Tue, 14 Jan 2014 12:44:12 +0100
8030662: "assert(counter_changed) failed: failed dependencies, but counter didn't change" still fails
Summary: Erroneously removed call to SystemDictionary::notice_modification() from jvmti with fix for 8029383
Reviewed-by: iveresov, twisti, kvn
1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "utilities/macros.hpp"
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #endif // INCLUDE_ALL_GCS
39 #include "memory/allocation.hpp"
40 #include "memory/allocation.inline.hpp"
41 #include "memory/gcLocker.inline.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/universe.inline.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceOop.hpp"
46 #include "oops/markOop.hpp"
47 #include "oops/method.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/symbol.hpp"
52 #include "oops/typeArrayKlass.hpp"
53 #include "oops/typeArrayOop.hpp"
54 #include "prims/jni.h"
55 #include "prims/jniCheck.hpp"
56 #include "prims/jniExport.hpp"
57 #include "prims/jniFastGetField.hpp"
58 #include "prims/jvm.h"
59 #include "prims/jvm_misc.hpp"
60 #include "prims/jvmtiExport.hpp"
61 #include "prims/jvmtiThreadState.hpp"
62 #include "runtime/compilationPolicy.hpp"
63 #include "runtime/fieldDescriptor.hpp"
64 #include "runtime/fprofiler.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/interfaceSupport.hpp"
67 #include "runtime/java.hpp"
68 #include "runtime/javaCalls.hpp"
69 #include "runtime/jfieldIDWorkaround.hpp"
70 #include "runtime/reflection.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "runtime/vm_operations.hpp"
75 #include "services/runtimeService.hpp"
76 #include "trace/tracing.hpp"
77 #include "utilities/defaultStream.hpp"
78 #include "utilities/dtrace.hpp"
79 #include "utilities/events.hpp"
80 #include "utilities/histogram.hpp"
81 #ifdef TARGET_OS_FAMILY_linux
82 # include "os_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 #endif
94 static jint CurrentVersion = JNI_VERSION_1_8;
97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
98 // '-return' probe regardless of the return path is taken out of the function.
99 // Methods that have multiple return paths use this to avoid having to
100 // instrument each return path. Methods that use CHECK or THROW must use this
101 // since those macros can cause an immedate uninstrumented return.
102 //
103 // In order to get the return value, a reference to the variable containing
104 // the return value must be passed to the contructor of the object, and
105 // the return value must be set before return (since the mark object has
106 // a reference to it).
107 //
108 // Example:
109 // DT_RETURN_MARK_DECL(SomeFunc, int);
110 // JNI_ENTRY(int, SomeFunc, ...)
111 // int return_value = 0;
112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
113 // foo(CHECK_0)
114 // return_value = 5;
115 // return return_value;
116 // JNI_END
117 #ifndef USDT2
118 #define DT_RETURN_MARK_DECL(name, type) \
119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name) \
132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
133 DTRACE_ONLY( \
134 class DTraceReturnProbeMark_##name { \
135 public: \
136 ~DTraceReturnProbeMark_##name() { \
137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
138 } \
139 } \
140 )
142 #else /* USDT2 */
144 #define DT_RETURN_MARK_DECL(name, type, probe) \
145 DTRACE_ONLY( \
146 class DTraceReturnProbeMark_##name { \
147 public: \
148 const type& _ret_ref; \
149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
150 ~DTraceReturnProbeMark_##name() { \
151 probe; \
152 } \
153 } \
154 )
155 // Void functions are simpler since there's no return value
156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
157 DTRACE_ONLY( \
158 class DTraceReturnProbeMark_##name { \
159 public: \
160 ~DTraceReturnProbeMark_##name() { \
161 probe; \
162 } \
163 } \
164 )
165 #endif /* USDT2 */
167 // Place these macros in the function to mark the return. Non-void
168 // functions need the type and address of the return value.
169 #define DT_RETURN_MARK(name, type, ref) \
170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
171 #define DT_VOID_RETURN_MARK(name) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
175 // Use these to select distinct code for floating-point vs. non-floating point
176 // situations. Used from within common macros where we need slightly
177 // different behavior for Float/Double
178 #define FP_SELECT_Boolean(intcode, fpcode) intcode
179 #define FP_SELECT_Byte(intcode, fpcode) intcode
180 #define FP_SELECT_Char(intcode, fpcode) intcode
181 #define FP_SELECT_Short(intcode, fpcode) intcode
182 #define FP_SELECT_Object(intcode, fpcode) intcode
183 #define FP_SELECT_Int(intcode, fpcode) intcode
184 #define FP_SELECT_Long(intcode, fpcode) intcode
185 #define FP_SELECT_Float(intcode, fpcode) fpcode
186 #define FP_SELECT_Double(intcode, fpcode) fpcode
187 #define FP_SELECT(TypeName, intcode, fpcode) \
188 FP_SELECT_##TypeName(intcode, fpcode)
190 #define COMMA ,
192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
193 // (dtrace doesn't do FP yet)
194 #ifndef USDT2
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
198 #else /* USDT2 */
199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
202 #endif /* USDT2 */
203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
204 FP_SELECT(TypeName, \
205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
208 // out-of-line helpers for class jfieldIDWorkaround:
210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
212 uintptr_t as_uint = (uintptr_t) id;
213 intptr_t offset = raw_instance_offset(id);
214 if (is_checked_jfieldID(id)) {
215 if (!klass_hash_ok(k, id)) {
216 return false;
217 }
218 }
219 return InstanceKlass::cast(k)->contains_field_offset(offset);
220 } else {
221 JNIid* result = (JNIid*) id;
222 #ifdef ASSERT
223 return result != NULL && result->is_static_field_id();
224 #else
225 return result != NULL;
226 #endif
227 }
228 }
231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
232 if (offset <= small_offset_mask) {
233 Klass* field_klass = k;
234 Klass* super_klass = field_klass->super();
235 // With compressed oops the most super class with nonstatic fields would
236 // be the owner of fields embedded in the header.
237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
239 field_klass = super_klass; // super contains the field also
240 super_klass = field_klass->super();
241 }
242 debug_only(No_Safepoint_Verifier nosafepoint;)
243 uintptr_t klass_hash = field_klass->identity_hash();
244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 {
249 ResourceMark rm;
250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 return 0;
255 }
256 }
258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
259 uintptr_t as_uint = (uintptr_t) id;
260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
261 do {
262 debug_only(No_Safepoint_Verifier nosafepoint;)
263 // Could use a non-blocking query for identity_hash here...
264 if ((k->identity_hash() & klass_mask) == klass_hash)
265 return true;
266 k = k->super();
267 } while (k != NULL);
268 return false;
269 }
271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
273 uintptr_t as_uint = (uintptr_t) id;
274 intptr_t offset = raw_instance_offset(id);
275 if (VerifyJNIFields) {
276 if (is_checked_jfieldID(id)) {
277 guarantee(klass_hash_ok(k, id),
278 "Bug in native code: jfieldID class must match object");
279 } else {
280 #if 0
281 #ifndef PRODUCT
282 if (Verbose) {
283 ResourceMark rm;
284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
285 }
286 #endif
287 #endif
288 }
289 }
290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
291 "Bug in native code: jfieldID offset must address interior of object");
292 }
294 // Pick a reasonable higher bound for local capacity requested
295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
296 // high because a test (or very unusual application) may try to allocate
297 // that many handles and run out of swap space. An implementation is
298 // permitted to allocate more handles than the ensured capacity, so this
299 // value is set high enough to prevent compatibility problems.
300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
303 // Wrapper to trace JNI functions
305 #ifdef ASSERT
306 Histogram* JNIHistogram;
307 static volatile jint JNIHistogram_lock = 0;
309 class JNITraceWrapper : public StackObj {
310 public:
311 JNITraceWrapper(const char* format, ...) {
312 if (TraceJNICalls) {
313 va_list ap;
314 va_start(ap, format);
315 tty->print("JNI ");
316 tty->vprint_cr(format, ap);
317 va_end(ap);
318 }
319 }
320 };
322 class JNIHistogramElement : public HistogramElement {
323 public:
324 JNIHistogramElement(const char* name);
325 };
327 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
328 _name = elementName;
329 uintx count = 0;
331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
333 count +=1;
334 if ( (WarnOnStalledSpinLock > 0)
335 && (count % WarnOnStalledSpinLock == 0)) {
336 warning("JNIHistogram_lock seems to be stalled");
337 }
338 }
339 }
342 if(JNIHistogram == NULL)
343 JNIHistogram = new Histogram("JNI Call Counts",100);
345 JNIHistogram->add_element(this);
346 Atomic::dec(&JNIHistogram_lock);
347 }
349 #define JNICountWrapper(arg) \
350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
352 if (e != NULL) e->increment_count()
353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
354 #else
355 #define JNIWrapper(arg)
356 #endif
359 // Implementation of JNI entries
361 #ifndef USDT2
362 DT_RETURN_MARK_DECL(DefineClass, jclass);
363 #else /* USDT2 */
364 DT_RETURN_MARK_DECL(DefineClass, jclass
365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
366 #endif /* USDT2 */
368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
369 const jbyte *buf, jsize bufLen))
370 JNIWrapper("DefineClass");
372 #ifndef USDT2
373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
374 env, name, loaderRef, buf, bufLen);
375 #else /* USDT2 */
376 HOTSPOT_JNI_DEFINECLASS_ENTRY(
377 env, (char*) name, loaderRef, (char*) buf, bufLen);
378 #endif /* USDT2 */
379 jclass cls = NULL;
380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
382 TempNewSymbol class_name = NULL;
383 // Since exceptions can be thrown, class initialization can take place
384 // if name is NULL no check for class name in .class stream has to be made.
385 if (name != NULL) {
386 const int str_len = (int)strlen(name);
387 if (str_len > Symbol::max_length()) {
388 // It's impossible to create this class; the name cannot fit
389 // into the constant pool.
390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
391 }
392 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
393 }
394 ResourceMark rm(THREAD);
395 ClassFileStream st((u1*) buf, bufLen, NULL);
396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
398 if (UsePerfData && !class_loader.is_null()) {
399 // check whether the current caller thread holds the lock or not.
400 // If not, increment the corresponding counter
401 if (ObjectSynchronizer::
402 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
403 ObjectSynchronizer::owner_self) {
404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
405 }
406 }
407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
408 Handle(), &st, true,
409 CHECK_NULL);
411 if (TraceClassResolution && k != NULL) {
412 trace_class_resolution(k);
413 }
415 cls = (jclass)JNIHandles::make_local(
416 env, k->java_mirror());
417 return cls;
418 JNI_END
422 static bool first_time_FindClass = true;
424 #ifndef USDT2
425 DT_RETURN_MARK_DECL(FindClass, jclass);
426 #else /* USDT2 */
427 DT_RETURN_MARK_DECL(FindClass, jclass
428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
429 #endif /* USDT2 */
431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
432 JNIWrapper("FindClass");
433 #ifndef USDT2
434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
435 #else /* USDT2 */
436 HOTSPOT_JNI_FINDCLASS_ENTRY(
437 env, (char *)name);
438 #endif /* USDT2 */
440 jclass result = NULL;
441 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
443 // Remember if we are the first invocation of jni_FindClass
444 bool first_time = first_time_FindClass;
445 first_time_FindClass = false;
447 // Sanity check the name: it cannot be null or larger than the maximum size
448 // name we can fit in the constant pool.
449 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
450 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
451 }
453 //%note jni_3
454 Handle loader;
455 Handle protection_domain;
456 // Find calling class
457 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
458 if (k.not_null()) {
459 loader = Handle(THREAD, k->class_loader());
460 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
461 // in the correct class context.
462 if (loader.is_null() &&
463 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
464 JavaValue result(T_OBJECT);
465 JavaCalls::call_static(&result, k,
466 vmSymbols::getFromClass_name(),
467 vmSymbols::void_class_signature(),
468 thread);
469 if (HAS_PENDING_EXCEPTION) {
470 Handle ex(thread, thread->pending_exception());
471 CLEAR_PENDING_EXCEPTION;
472 THROW_HANDLE_0(ex);
473 }
474 oop mirror = (oop) result.get_jobject();
475 loader = Handle(THREAD,
476 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
477 protection_domain = Handle(THREAD,
478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
479 }
480 } else {
481 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
482 loader = Handle(THREAD, SystemDictionary::java_system_loader());
483 }
485 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
486 result = find_class_from_class_loader(env, sym, true, loader,
487 protection_domain, true, thread);
489 if (TraceClassResolution && result != NULL) {
490 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
491 }
493 // If we were the first invocation of jni_FindClass, we enable compilation again
494 // rather than just allowing invocation counter to overflow and decay.
495 // Controlled by flag DelayCompilationDuringStartup.
496 if (first_time && !CompileTheWorld)
497 CompilationPolicy::completed_vm_startup();
499 return result;
500 JNI_END
502 #ifndef USDT2
503 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
504 #else /* USDT2 */
505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
506 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
507 #endif /* USDT2 */
509 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
510 JNIWrapper("FromReflectedMethod");
511 #ifndef USDT2
512 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
513 #else /* USDT2 */
514 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
515 env, method);
516 #endif /* USDT2 */
517 jmethodID ret = NULL;
518 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
520 // method is a handle to a java.lang.reflect.Method object
521 oop reflected = JNIHandles::resolve_non_null(method);
522 oop mirror = NULL;
523 int slot = 0;
525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
526 mirror = java_lang_reflect_Constructor::clazz(reflected);
527 slot = java_lang_reflect_Constructor::slot(reflected);
528 } else {
529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
530 mirror = java_lang_reflect_Method::clazz(reflected);
531 slot = java_lang_reflect_Method::slot(reflected);
532 }
533 Klass* k = java_lang_Class::as_Klass(mirror);
535 KlassHandle k1(THREAD, k);
536 // Make sure class is initialized before handing id's out to methods
537 k1()->initialize(CHECK_NULL);
538 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
539 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
540 return ret;
541 JNI_END
543 #ifndef USDT2
544 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
545 #else /* USDT2 */
546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
547 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
548 #endif /* USDT2 */
550 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
551 JNIWrapper("FromReflectedField");
552 #ifndef USDT2
553 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
554 #else /* USDT2 */
555 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
556 env, field);
557 #endif /* USDT2 */
558 jfieldID ret = NULL;
559 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
561 // field is a handle to a java.lang.reflect.Field object
562 oop reflected = JNIHandles::resolve_non_null(field);
563 oop mirror = java_lang_reflect_Field::clazz(reflected);
564 Klass* k = java_lang_Class::as_Klass(mirror);
565 int slot = java_lang_reflect_Field::slot(reflected);
566 int modifiers = java_lang_reflect_Field::modifiers(reflected);
568 KlassHandle k1(THREAD, k);
569 // Make sure class is initialized before handing id's out to fields
570 k1()->initialize(CHECK_NULL);
572 // First check if this is a static field
573 if (modifiers & JVM_ACC_STATIC) {
574 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
575 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
576 assert(id != NULL, "corrupt Field object");
577 debug_only(id->set_is_static_field_id();)
578 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
579 ret = jfieldIDWorkaround::to_static_jfieldID(id);
580 return ret;
581 }
583 // The slot is the index of the field description in the field-array
584 // The jfieldID is the offset of the field within the object
585 // It may also have hash bits for k, if VerifyJNIFields is turned on.
586 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
587 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
588 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
589 return ret;
590 JNI_END
592 #ifndef USDT2
593 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
594 #else /* USDT2 */
595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
596 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
597 #endif /* USDT2 */
599 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
600 JNIWrapper("ToReflectedMethod");
601 #ifndef USDT2
602 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
603 #else /* USDT2 */
604 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
605 env, cls, (uintptr_t) method_id, isStatic);
606 #endif /* USDT2 */
607 jobject ret = NULL;
608 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
610 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
611 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
612 oop reflection_method;
613 if (m->is_initializer()) {
614 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
615 } else {
616 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
617 }
618 ret = JNIHandles::make_local(env, reflection_method);
619 return ret;
620 JNI_END
622 #ifndef USDT2
623 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
624 #else /* USDT2 */
625 DT_RETURN_MARK_DECL(GetSuperclass, jclass
626 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
627 #endif /* USDT2 */
629 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
630 JNIWrapper("GetSuperclass");
631 #ifndef USDT2
632 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
633 #else /* USDT2 */
634 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
635 env, sub);
636 #endif /* USDT2 */
637 jclass obj = NULL;
638 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
640 oop mirror = JNIHandles::resolve_non_null(sub);
641 // primitive classes return NULL
642 if (java_lang_Class::is_primitive(mirror)) return NULL;
644 // Rules of Class.getSuperClass as implemented by KLass::java_super:
645 // arrays return Object
646 // interfaces return NULL
647 // proper classes return Klass::super()
648 Klass* k = java_lang_Class::as_Klass(mirror);
649 if (k->is_interface()) return NULL;
651 // return mirror for superclass
652 Klass* super = k->java_super();
653 // super2 is the value computed by the compiler's getSuperClass intrinsic:
654 debug_only(Klass* super2 = ( k->oop_is_array()
655 ? SystemDictionary::Object_klass()
656 : k->super() ) );
657 assert(super == super2,
658 "java_super computation depends on interface, array, other super");
659 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
660 return obj;
661 JNI_END
663 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
664 JNIWrapper("IsSubclassOf");
665 #ifndef USDT2
666 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
667 #else /* USDT2 */
668 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
669 env, sub, super);
670 #endif /* USDT2 */
671 oop sub_mirror = JNIHandles::resolve_non_null(sub);
672 oop super_mirror = JNIHandles::resolve_non_null(super);
673 if (java_lang_Class::is_primitive(sub_mirror) ||
674 java_lang_Class::is_primitive(super_mirror)) {
675 jboolean ret = (sub_mirror == super_mirror);
676 #ifndef USDT2
677 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
678 #else /* USDT2 */
679 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
680 ret);
681 #endif /* USDT2 */
682 return ret;
683 }
684 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
685 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
686 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
687 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
688 JNI_TRUE : JNI_FALSE;
689 #ifndef USDT2
690 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
691 #else /* USDT2 */
692 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
693 ret);
694 #endif /* USDT2 */
695 return ret;
696 JNI_END
698 #ifndef USDT2
699 DT_RETURN_MARK_DECL(Throw, jint);
700 #else /* USDT2 */
701 DT_RETURN_MARK_DECL(Throw, jint
702 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
703 #endif /* USDT2 */
705 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
706 JNIWrapper("Throw");
707 #ifndef USDT2
708 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
709 #else /* USDT2 */
710 HOTSPOT_JNI_THROW_ENTRY(
711 env, obj);
712 #endif /* USDT2 */
713 jint ret = JNI_OK;
714 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
716 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
717 ShouldNotReachHere();
718 JNI_END
720 #ifndef USDT2
721 DT_RETURN_MARK_DECL(ThrowNew, jint);
722 #else /* USDT2 */
723 DT_RETURN_MARK_DECL(ThrowNew, jint
724 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
725 #endif /* USDT2 */
727 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
728 JNIWrapper("ThrowNew");
729 #ifndef USDT2
730 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
731 #else /* USDT2 */
732 HOTSPOT_JNI_THROWNEW_ENTRY(
733 env, clazz, (char *) message);
734 #endif /* USDT2 */
735 jint ret = JNI_OK;
736 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
738 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
739 Symbol* name = k->name();
740 Handle class_loader (THREAD, k->class_loader());
741 Handle protection_domain (THREAD, k->protection_domain());
742 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
743 ShouldNotReachHere();
744 JNI_END
747 // JNI functions only transform a pending async exception to a synchronous
748 // exception in ExceptionOccurred and ExceptionCheck calls, since
749 // delivering an async exception in other places won't change the native
750 // code's control flow and would be harmful when native code further calls
751 // JNI functions with a pending exception. Async exception is also checked
752 // during the call, so ExceptionOccurred/ExceptionCheck won't return
753 // false but deliver the async exception at the very end during
754 // state transition.
756 static void jni_check_async_exceptions(JavaThread *thread) {
757 assert(thread == Thread::current(), "must be itself");
758 thread->check_and_handle_async_exceptions();
759 }
761 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
762 JNIWrapper("ExceptionOccurred");
763 #ifndef USDT2
764 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
765 #else /* USDT2 */
766 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
767 env);
768 #endif /* USDT2 */
769 jni_check_async_exceptions(thread);
770 oop exception = thread->pending_exception();
771 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
772 #ifndef USDT2
773 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
774 #else /* USDT2 */
775 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
776 ret);
777 #endif /* USDT2 */
778 return ret;
779 JNI_END
782 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
783 JNIWrapper("ExceptionDescribe");
784 #ifndef USDT2
785 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
786 #else /* USDT2 */
787 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
788 env);
789 #endif /* USDT2 */
790 if (thread->has_pending_exception()) {
791 Handle ex(thread, thread->pending_exception());
792 thread->clear_pending_exception();
793 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
794 // Don't print anything if we are being killed.
795 } else {
796 jio_fprintf(defaultStream::error_stream(), "Exception ");
797 if (thread != NULL && thread->threadObj() != NULL) {
798 ResourceMark rm(THREAD);
799 jio_fprintf(defaultStream::error_stream(),
800 "in thread \"%s\" ", thread->get_thread_name());
801 }
802 if (ex->is_a(SystemDictionary::Throwable_klass())) {
803 JavaValue result(T_VOID);
804 JavaCalls::call_virtual(&result,
805 ex,
806 KlassHandle(THREAD,
807 SystemDictionary::Throwable_klass()),
808 vmSymbols::printStackTrace_name(),
809 vmSymbols::void_method_signature(),
810 THREAD);
811 // If an exception is thrown in the call it gets thrown away. Not much
812 // we can do with it. The native code that calls this, does not check
813 // for the exception - hence, it might still be in the thread when DestroyVM gets
814 // called, potentially causing a few asserts to trigger - since no pending exception
815 // is expected.
816 CLEAR_PENDING_EXCEPTION;
817 } else {
818 ResourceMark rm(THREAD);
819 jio_fprintf(defaultStream::error_stream(),
820 ". Uncaught exception of type %s.",
821 ex->klass()->external_name());
822 }
823 }
824 }
825 #ifndef USDT2
826 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
827 #else /* USDT2 */
828 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
829 );
830 #endif /* USDT2 */
831 JNI_END
834 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
835 JNIWrapper("ExceptionClear");
836 #ifndef USDT2
837 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
838 #else /* USDT2 */
839 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
840 env);
841 #endif /* USDT2 */
843 // The jni code might be using this API to clear java thrown exception.
844 // So just mark jvmti thread exception state as exception caught.
845 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
846 if (state != NULL && state->is_exception_detected()) {
847 state->set_exception_caught();
848 }
849 thread->clear_pending_exception();
850 #ifndef USDT2
851 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
852 #else /* USDT2 */
853 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
854 );
855 #endif /* USDT2 */
856 JNI_END
859 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
860 JNIWrapper("FatalError");
861 #ifndef USDT2
862 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
863 #else /* USDT2 */
864 HOTSPOT_JNI_FATALERROR_ENTRY(
865 env, (char *) msg);
866 #endif /* USDT2 */
867 tty->print_cr("FATAL ERROR in native method: %s", msg);
868 thread->print_stack();
869 os::abort(); // Dump core and abort
870 JNI_END
873 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
874 JNIWrapper("PushLocalFrame");
875 #ifndef USDT2
876 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
877 #else /* USDT2 */
878 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
879 env, capacity);
880 #endif /* USDT2 */
881 //%note jni_11
882 if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
883 #ifndef USDT2
884 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
885 #else /* USDT2 */
886 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
887 (uint32_t)JNI_ERR);
888 #endif /* USDT2 */
889 return JNI_ERR;
890 }
891 JNIHandleBlock* old_handles = thread->active_handles();
892 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
893 assert(new_handles != NULL, "should not be NULL");
894 new_handles->set_pop_frame_link(old_handles);
895 thread->set_active_handles(new_handles);
896 jint ret = JNI_OK;
897 #ifndef USDT2
898 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
899 #else /* USDT2 */
900 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
901 ret);
902 #endif /* USDT2 */
903 return ret;
904 JNI_END
907 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
908 JNIWrapper("PopLocalFrame");
909 #ifndef USDT2
910 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
911 #else /* USDT2 */
912 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
913 env, result);
914 #endif /* USDT2 */
915 //%note jni_11
916 Handle result_handle(thread, JNIHandles::resolve(result));
917 JNIHandleBlock* old_handles = thread->active_handles();
918 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
919 if (new_handles != NULL) {
920 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
921 // This way code will still work if PopLocalFrame is called without a corresponding
922 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
923 // the release_block call will release the blocks.
924 thread->set_active_handles(new_handles);
925 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
926 JNIHandleBlock::release_block(old_handles, thread); // may block
927 result = JNIHandles::make_local(thread, result_handle());
928 }
929 #ifndef USDT2
930 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
931 #else /* USDT2 */
932 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
933 result);
934 #endif /* USDT2 */
935 return result;
936 JNI_END
939 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
940 JNIWrapper("NewGlobalRef");
941 #ifndef USDT2
942 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
943 #else /* USDT2 */
944 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
945 env, ref);
946 #endif /* USDT2 */
947 Handle ref_handle(thread, JNIHandles::resolve(ref));
948 jobject ret = JNIHandles::make_global(ref_handle);
949 #ifndef USDT2
950 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
951 #else /* USDT2 */
952 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
953 ret);
954 #endif /* USDT2 */
955 return ret;
956 JNI_END
958 // Must be JNI_ENTRY (with HandleMark)
959 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
960 JNIWrapper("DeleteGlobalRef");
961 #ifndef USDT2
962 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
963 #else /* USDT2 */
964 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
965 env, ref);
966 #endif /* USDT2 */
967 JNIHandles::destroy_global(ref);
968 #ifndef USDT2
969 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
970 #else /* USDT2 */
971 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
972 );
973 #endif /* USDT2 */
974 JNI_END
976 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
977 JNIWrapper("DeleteLocalRef");
978 #ifndef USDT2
979 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
980 #else /* USDT2 */
981 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
982 env, obj);
983 #endif /* USDT2 */
984 JNIHandles::destroy_local(obj);
985 #ifndef USDT2
986 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
987 #else /* USDT2 */
988 HOTSPOT_JNI_DELETELOCALREF_RETURN(
989 );
990 #endif /* USDT2 */
991 JNI_END
993 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
994 JNIWrapper("IsSameObject");
995 #ifndef USDT2
996 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
997 #else /* USDT2 */
998 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
999 env, r1, r2);
1000 #endif /* USDT2 */
1001 oop a = JNIHandles::resolve(r1);
1002 oop b = JNIHandles::resolve(r2);
1003 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1004 #ifndef USDT2
1005 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1006 #else /* USDT2 */
1007 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1008 ret);
1009 #endif /* USDT2 */
1010 return ret;
1011 JNI_END
1014 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1015 JNIWrapper("NewLocalRef");
1016 #ifndef USDT2
1017 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1018 #else /* USDT2 */
1019 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1020 env, ref);
1021 #endif /* USDT2 */
1022 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1023 #ifndef USDT2
1024 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1025 #else /* USDT2 */
1026 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1027 ret);
1028 #endif /* USDT2 */
1029 return ret;
1030 JNI_END
1032 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1033 JNIWrapper("EnsureLocalCapacity");
1034 #ifndef USDT2
1035 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1036 #else /* USDT2 */
1037 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1038 env, capacity);
1039 #endif /* USDT2 */
1040 jint ret;
1041 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1042 ret = JNI_OK;
1043 } else {
1044 ret = JNI_ERR;
1045 }
1046 #ifndef USDT2
1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1048 #else /* USDT2 */
1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1050 ret);
1051 #endif /* USDT2 */
1052 return ret;
1053 JNI_END
1055 // Return the Handle Type
1056 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1057 JNIWrapper("GetObjectRefType");
1058 #ifndef USDT2
1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1060 #else /* USDT2 */
1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1062 env, obj);
1063 #endif /* USDT2 */
1064 jobjectRefType ret;
1065 if (JNIHandles::is_local_handle(thread, obj) ||
1066 JNIHandles::is_frame_handle(thread, obj))
1067 ret = JNILocalRefType;
1068 else if (JNIHandles::is_global_handle(obj))
1069 ret = JNIGlobalRefType;
1070 else if (JNIHandles::is_weak_global_handle(obj))
1071 ret = JNIWeakGlobalRefType;
1072 else
1073 ret = JNIInvalidRefType;
1074 #ifndef USDT2
1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1076 #else /* USDT2 */
1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1078 (void *) ret);
1079 #endif /* USDT2 */
1080 return ret;
1081 JNI_END
1084 class JNI_ArgumentPusher : public SignatureIterator {
1085 protected:
1086 JavaCallArguments* _arguments;
1088 virtual void get_bool () = 0;
1089 virtual void get_char () = 0;
1090 virtual void get_short () = 0;
1091 virtual void get_byte () = 0;
1092 virtual void get_int () = 0;
1093 virtual void get_long () = 0;
1094 virtual void get_float () = 0;
1095 virtual void get_double () = 0;
1096 virtual void get_object () = 0;
1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1099 this->_return_type = T_ILLEGAL;
1100 _arguments = NULL;
1101 }
1103 public:
1104 virtual void iterate( uint64_t fingerprint ) = 0;
1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1108 inline void do_bool() { if (!is_return_type()) get_bool(); }
1109 inline void do_char() { if (!is_return_type()) get_char(); }
1110 inline void do_short() { if (!is_return_type()) get_short(); }
1111 inline void do_byte() { if (!is_return_type()) get_byte(); }
1112 inline void do_int() { if (!is_return_type()) get_int(); }
1113 inline void do_long() { if (!is_return_type()) get_long(); }
1114 inline void do_float() { if (!is_return_type()) get_float(); }
1115 inline void do_double() { if (!is_return_type()) get_double(); }
1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1118 inline void do_void() { }
1120 JavaCallArguments* arguments() { return _arguments; }
1121 void push_receiver(Handle h) { _arguments->push_oop(h); }
1122 };
1125 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1126 protected:
1127 va_list _ap;
1129 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1130 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1131 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1132 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1133 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1135 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1137 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1138 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1139 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1140 inline void get_object() { jobject l = va_arg(_ap, jobject);
1141 _arguments->push_oop(Handle((oop *)l, false)); }
1143 inline void set_ap(va_list rap) {
1144 #ifdef va_copy
1145 va_copy(_ap, rap);
1146 #elif defined (__va_copy)
1147 __va_copy(_ap, rap);
1148 #else
1149 _ap = rap;
1150 #endif
1151 }
1153 public:
1154 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1155 : JNI_ArgumentPusher(signature) {
1156 set_ap(rap);
1157 }
1158 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1159 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1160 set_ap(rap);
1161 }
1163 // Optimized path if we have the bitvector form of signature
1164 void iterate( uint64_t fingerprint ) {
1165 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1166 else {
1167 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1168 result_feature_mask);
1170 assert(fingerprint, "Fingerprint should not be 0");
1171 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1172 while ( 1 ) {
1173 switch ( fingerprint & parameter_feature_mask ) {
1174 case bool_parm:
1175 case char_parm:
1176 case short_parm:
1177 case byte_parm:
1178 case int_parm:
1179 get_int();
1180 break;
1181 case obj_parm:
1182 get_object();
1183 break;
1184 case long_parm:
1185 get_long();
1186 break;
1187 case float_parm:
1188 get_float();
1189 break;
1190 case double_parm:
1191 get_double();
1192 break;
1193 case done_parm:
1194 return;
1195 break;
1196 default:
1197 ShouldNotReachHere();
1198 break;
1199 }
1200 fingerprint >>= parameter_feature_size;
1201 }
1202 }
1203 }
1204 };
1207 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1208 protected:
1209 const jvalue *_ap;
1211 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1212 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1213 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1214 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1215 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1217 inline void get_long() { _arguments->push_long((_ap++)->j); }
1218 inline void get_float() { _arguments->push_float((_ap++)->f); }
1219 inline void get_double() { _arguments->push_double((_ap++)->d);}
1220 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1222 inline void set_ap(const jvalue *rap) { _ap = rap; }
1224 public:
1225 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1226 : JNI_ArgumentPusher(signature) {
1227 set_ap(rap);
1228 }
1229 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1230 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1231 set_ap(rap);
1232 }
1234 // Optimized path if we have the bitvector form of signature
1235 void iterate( uint64_t fingerprint ) {
1236 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1237 else {
1238 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1239 result_feature_mask);
1240 assert(fingerprint, "Fingerprint should not be 0");
1241 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1242 while ( 1 ) {
1243 switch ( fingerprint & parameter_feature_mask ) {
1244 case bool_parm:
1245 get_bool();
1246 break;
1247 case char_parm:
1248 get_char();
1249 break;
1250 case short_parm:
1251 get_short();
1252 break;
1253 case byte_parm:
1254 get_byte();
1255 break;
1256 case int_parm:
1257 get_int();
1258 break;
1259 case obj_parm:
1260 get_object();
1261 break;
1262 case long_parm:
1263 get_long();
1264 break;
1265 case float_parm:
1266 get_float();
1267 break;
1268 case double_parm:
1269 get_double();
1270 break;
1271 case done_parm:
1272 return;
1273 break;
1274 default:
1275 ShouldNotReachHere();
1276 break;
1277 }
1278 fingerprint >>= parameter_feature_size;
1279 }
1280 }
1281 }
1282 };
1285 enum JNICallType {
1286 JNI_STATIC,
1287 JNI_VIRTUAL,
1288 JNI_NONVIRTUAL
1289 };
1293 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1294 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1296 // Create object to hold arguments for the JavaCall, and associate it with
1297 // the jni parser
1298 ResourceMark rm(THREAD);
1299 int number_of_parameters = method->size_of_parameters();
1300 JavaCallArguments java_args(number_of_parameters);
1301 args->set_java_argument_object(&java_args);
1303 assert(method->is_static(), "method should be static");
1305 // Fill out JavaCallArguments object
1306 args->iterate( Fingerprinter(method).fingerprint() );
1307 // Initialize result type
1308 result->set_type(args->get_ret_type());
1310 // Invoke the method. Result is returned as oop.
1311 JavaCalls::call(result, method, &java_args, CHECK);
1313 // Convert result
1314 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1315 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1316 }
1317 }
1320 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1321 oop recv = JNIHandles::resolve(receiver);
1322 if (recv == NULL) {
1323 THROW(vmSymbols::java_lang_NullPointerException());
1324 }
1325 Handle h_recv(THREAD, recv);
1327 int number_of_parameters;
1328 Method* selected_method;
1329 {
1330 Method* m = Method::resolve_jmethod_id(method_id);
1331 number_of_parameters = m->size_of_parameters();
1332 Klass* holder = m->method_holder();
1333 if (!(holder)->is_interface()) {
1334 // non-interface call -- for that little speed boost, don't handlize
1335 debug_only(No_Safepoint_Verifier nosafepoint;)
1336 if (call_type == JNI_VIRTUAL) {
1337 // jni_GetMethodID makes sure class is linked and initialized
1338 // so m should have a valid vtable index.
1339 assert(!m->has_itable_index(), "");
1340 int vtbl_index = m->vtable_index();
1341 if (vtbl_index != Method::nonvirtual_vtable_index) {
1342 Klass* k = h_recv->klass();
1343 // k might be an arrayKlassOop but all vtables start at
1344 // the same place. The cast is to avoid virtual call and assertion.
1345 InstanceKlass *ik = (InstanceKlass*)k;
1346 selected_method = ik->method_at_vtable(vtbl_index);
1347 } else {
1348 // final method
1349 selected_method = m;
1350 }
1351 } else {
1352 // JNI_NONVIRTUAL call
1353 selected_method = m;
1354 }
1355 } else {
1356 // interface call
1357 KlassHandle h_holder(THREAD, holder);
1359 int itbl_index = m->itable_index();
1360 Klass* k = h_recv->klass();
1361 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1362 }
1363 }
1365 methodHandle method(THREAD, selected_method);
1367 // Create object to hold arguments for the JavaCall, and associate it with
1368 // the jni parser
1369 ResourceMark rm(THREAD);
1370 JavaCallArguments java_args(number_of_parameters);
1371 args->set_java_argument_object(&java_args);
1373 // handle arguments
1374 assert(!method->is_static(), "method should not be static");
1375 args->push_receiver(h_recv); // Push jobject handle
1377 // Fill out JavaCallArguments object
1378 args->iterate( Fingerprinter(method).fingerprint() );
1379 // Initialize result type
1380 result->set_type(args->get_ret_type());
1382 // Invoke the method. Result is returned as oop.
1383 JavaCalls::call(result, method, &java_args, CHECK);
1385 // Convert result
1386 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1387 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1388 }
1389 }
1392 static instanceOop alloc_object(jclass clazz, TRAPS) {
1393 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1394 k()->check_valid_for_instantiation(false, CHECK_NULL);
1395 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1396 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1397 return ih;
1398 }
1400 #ifndef USDT2
1401 DT_RETURN_MARK_DECL(AllocObject, jobject);
1402 #else /* USDT2 */
1403 DT_RETURN_MARK_DECL(AllocObject, jobject
1404 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1405 #endif /* USDT2 */
1407 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1408 JNIWrapper("AllocObject");
1410 #ifndef USDT2
1411 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1412 #else /* USDT2 */
1413 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1414 env, clazz);
1415 #endif /* USDT2 */
1416 jobject ret = NULL;
1417 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1419 instanceOop i = alloc_object(clazz, CHECK_NULL);
1420 ret = JNIHandles::make_local(env, i);
1421 return ret;
1422 JNI_END
1424 #ifndef USDT2
1425 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1426 #else /* USDT2 */
1427 DT_RETURN_MARK_DECL(NewObjectA, jobject
1428 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1429 #endif /* USDT2 */
1431 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1432 JNIWrapper("NewObjectA");
1433 #ifndef USDT2
1434 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1435 #else /* USDT2 */
1436 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1437 env, clazz, (uintptr_t) methodID);
1438 #endif /* USDT2 */
1439 jobject obj = NULL;
1440 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1442 instanceOop i = alloc_object(clazz, CHECK_NULL);
1443 obj = JNIHandles::make_local(env, i);
1444 JavaValue jvalue(T_VOID);
1445 JNI_ArgumentPusherArray ap(methodID, args);
1446 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1447 return obj;
1448 JNI_END
1450 #ifndef USDT2
1451 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1452 #else /* USDT2 */
1453 DT_RETURN_MARK_DECL(NewObjectV, jobject
1454 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1455 #endif /* USDT2 */
1457 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1458 JNIWrapper("NewObjectV");
1459 #ifndef USDT2
1460 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1461 #else /* USDT2 */
1462 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1463 env, clazz, (uintptr_t) methodID);
1464 #endif /* USDT2 */
1465 jobject obj = NULL;
1466 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1468 instanceOop i = alloc_object(clazz, CHECK_NULL);
1469 obj = JNIHandles::make_local(env, i);
1470 JavaValue jvalue(T_VOID);
1471 JNI_ArgumentPusherVaArg ap(methodID, args);
1472 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1473 return obj;
1474 JNI_END
1476 #ifndef USDT2
1477 DT_RETURN_MARK_DECL(NewObject, jobject);
1478 #else /* USDT2 */
1479 DT_RETURN_MARK_DECL(NewObject, jobject
1480 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1481 #endif /* USDT2 */
1483 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1484 JNIWrapper("NewObject");
1485 #ifndef USDT2
1486 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1487 #else /* USDT2 */
1488 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1489 env, clazz, (uintptr_t) methodID);
1490 #endif /* USDT2 */
1491 jobject obj = NULL;
1492 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1494 instanceOop i = alloc_object(clazz, CHECK_NULL);
1495 obj = JNIHandles::make_local(env, i);
1496 va_list args;
1497 va_start(args, methodID);
1498 JavaValue jvalue(T_VOID);
1499 JNI_ArgumentPusherVaArg ap(methodID, args);
1500 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1501 va_end(args);
1502 return obj;
1503 JNI_END
1506 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1507 JNIWrapper("GetObjectClass");
1508 #ifndef USDT2
1509 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1510 #else /* USDT2 */
1511 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1512 env, obj);
1513 #endif /* USDT2 */
1514 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1515 jclass ret =
1516 (jclass) JNIHandles::make_local(env, k->java_mirror());
1517 #ifndef USDT2
1518 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1519 #else /* USDT2 */
1520 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1521 ret);
1522 #endif /* USDT2 */
1523 return ret;
1524 JNI_END
1526 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1527 JNIWrapper("IsInstanceOf");
1528 #ifndef USDT2
1529 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1530 #else /* USDT2 */
1531 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1532 env, obj, clazz);
1533 #endif /* USDT2 */
1534 jboolean ret = JNI_TRUE;
1535 if (obj != NULL) {
1536 ret = JNI_FALSE;
1537 Klass* k = java_lang_Class::as_Klass(
1538 JNIHandles::resolve_non_null(clazz));
1539 if (k != NULL) {
1540 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1541 }
1542 }
1543 #ifndef USDT2
1544 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1545 #else /* USDT2 */
1546 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1547 ret);
1548 #endif /* USDT2 */
1549 return ret;
1550 JNI_END
1553 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1554 const char *sig, bool is_static, TRAPS) {
1555 // %%%% This code should probably just call into a method in the LinkResolver
1556 //
1557 // The class should have been loaded (we have an instance of the class
1558 // passed in) so the method and signature should already be in the symbol
1559 // table. If they're not there, the method doesn't exist.
1560 const char *name_to_probe = (name_str == NULL)
1561 ? vmSymbols::object_initializer_name()->as_C_string()
1562 : name_str;
1563 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1564 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1566 if (name == NULL || signature == NULL) {
1567 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1568 }
1570 // Throw a NoSuchMethodError exception if we have an instance of a
1571 // primitive java.lang.Class
1572 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1573 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1574 }
1576 KlassHandle klass(THREAD,
1577 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1579 // Make sure class is linked and initialized before handing id's out to
1580 // Method*s.
1581 klass()->initialize(CHECK_NULL);
1583 Method* m;
1584 if (name == vmSymbols::object_initializer_name() ||
1585 name == vmSymbols::class_initializer_name()) {
1586 // Never search superclasses for constructors
1587 if (klass->oop_is_instance()) {
1588 m = InstanceKlass::cast(klass())->find_method(name, signature);
1589 } else {
1590 m = NULL;
1591 }
1592 } else {
1593 m = klass->lookup_method(name, signature);
1594 if (m == NULL && klass->oop_is_instance()) {
1595 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1596 }
1597 }
1598 if (m == NULL || (m->is_static() != is_static)) {
1599 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1600 }
1601 return m->jmethod_id();
1602 }
1605 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1606 const char *name, const char *sig))
1607 JNIWrapper("GetMethodID");
1608 #ifndef USDT2
1609 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1610 #else /* USDT2 */
1611 HOTSPOT_JNI_GETMETHODID_ENTRY(
1612 env, clazz, (char *) name, (char *) sig);
1613 #endif /* USDT2 */
1614 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1615 #ifndef USDT2
1616 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1617 #else /* USDT2 */
1618 HOTSPOT_JNI_GETMETHODID_RETURN(
1619 (uintptr_t) ret);
1620 #endif /* USDT2 */
1621 return ret;
1622 JNI_END
1625 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1626 const char *name, const char *sig))
1627 JNIWrapper("GetStaticMethodID");
1628 #ifndef USDT2
1629 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1630 #else /* USDT2 */
1631 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1632 env, (char *) clazz, (char *) name, (char *)sig);
1633 #endif /* USDT2 */
1634 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1635 #ifndef USDT2
1636 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1637 #else /* USDT2 */
1638 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1639 (uintptr_t) ret);
1640 #endif /* USDT2 */
1641 return ret;
1642 JNI_END
1646 //
1647 // Calling Methods
1648 //
1650 #ifndef USDT2
1651 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1652 \
1653 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1654 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1655 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1656 \
1657 JNI_ENTRY(ResultType, \
1658 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1659 JNIWrapper("Call" XSTR(Result) "Method"); \
1660 \
1661 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1662 ResultType ret = 0;\
1663 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1664 (const ResultType&)ret);\
1665 \
1666 va_list args; \
1667 va_start(args, methodID); \
1668 JavaValue jvalue(Tag); \
1669 JNI_ArgumentPusherVaArg ap(methodID, args); \
1670 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1671 va_end(args); \
1672 ret = jvalue.get_##ResultType(); \
1673 return ret;\
1674 JNI_END \
1675 \
1676 \
1677 JNI_ENTRY(ResultType, \
1678 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1679 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1680 \
1681 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1682 ResultType ret = 0;\
1683 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1684 (const ResultType&)ret);\
1685 \
1686 JavaValue jvalue(Tag); \
1687 JNI_ArgumentPusherVaArg ap(methodID, args); \
1688 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1689 ret = jvalue.get_##ResultType(); \
1690 return ret;\
1691 JNI_END \
1692 \
1693 \
1694 JNI_ENTRY(ResultType, \
1695 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1696 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1697 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1698 ResultType ret = 0;\
1699 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1700 (const ResultType&)ret);\
1701 \
1702 JavaValue jvalue(Tag); \
1703 JNI_ArgumentPusherArray ap(methodID, args); \
1704 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1705 ret = jvalue.get_##ResultType(); \
1706 return ret;\
1707 JNI_END
1709 // the runtime type of subword integral basic types is integer
1710 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1711 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1712 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1713 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1715 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1716 DEFINE_CALLMETHOD(jint, Int, T_INT)
1717 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1718 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1719 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1721 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1722 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1723 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1725 #else /* USDT2 */
1727 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1728 , EntryProbe, ReturnProbe) \
1729 \
1730 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1731 , ReturnProbe); \
1732 \
1733 JNI_ENTRY(ResultType, \
1734 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1735 JNIWrapper("Call" XSTR(Result) "Method"); \
1736 \
1737 EntryProbe; \
1738 ResultType ret = 0;\
1739 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1740 (const ResultType&)ret);\
1741 \
1742 va_list args; \
1743 va_start(args, methodID); \
1744 JavaValue jvalue(Tag); \
1745 JNI_ArgumentPusherVaArg ap(methodID, args); \
1746 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1747 va_end(args); \
1748 ret = jvalue.get_##ResultType(); \
1749 return ret;\
1750 JNI_END
1752 // the runtime type of subword integral basic types is integer
1753 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1754 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1755 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1756 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1757 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1758 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1759 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1760 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1761 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1762 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1763 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1764 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1766 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1767 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1768 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1769 DEFINE_CALLMETHOD(jint, Int, T_INT,
1770 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1771 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1772 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1773 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1774 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1775 // Float and double probes don't return value because dtrace doesn't currently support it
1776 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1777 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1778 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1779 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1780 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1781 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1783 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1784 , EntryProbe, ReturnProbe) \
1785 \
1786 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1787 , ReturnProbe); \
1788 \
1789 JNI_ENTRY(ResultType, \
1790 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1791 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1792 \
1793 EntryProbe;\
1794 ResultType ret = 0;\
1795 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1796 (const ResultType&)ret);\
1797 \
1798 JavaValue jvalue(Tag); \
1799 JNI_ArgumentPusherVaArg ap(methodID, args); \
1800 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1801 ret = jvalue.get_##ResultType(); \
1802 return ret;\
1803 JNI_END
1805 // the runtime type of subword integral basic types is integer
1806 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1807 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1808 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1809 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1810 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1811 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1812 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1813 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1814 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1815 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1816 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1817 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1819 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1820 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1821 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1822 DEFINE_CALLMETHODV(jint, Int, T_INT,
1823 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1824 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1825 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1826 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1827 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1828 // Float and double probes don't return value because dtrace doesn't currently support it
1829 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1830 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1831 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1832 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1833 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1834 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1836 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1837 , EntryProbe, ReturnProbe) \
1838 \
1839 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1840 , ReturnProbe); \
1841 \
1842 JNI_ENTRY(ResultType, \
1843 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1844 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1845 EntryProbe; \
1846 ResultType ret = 0;\
1847 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1848 (const ResultType&)ret);\
1849 \
1850 JavaValue jvalue(Tag); \
1851 JNI_ArgumentPusherArray ap(methodID, args); \
1852 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1853 ret = jvalue.get_##ResultType(); \
1854 return ret;\
1855 JNI_END
1857 // the runtime type of subword integral basic types is integer
1858 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1859 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1860 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1861 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1862 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1863 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1864 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1865 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1866 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1867 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1868 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1869 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1871 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1872 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1873 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1874 DEFINE_CALLMETHODA(jint, Int, T_INT,
1875 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1876 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1877 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1878 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1879 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1880 // Float and double probes don't return value because dtrace doesn't currently support it
1881 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1882 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1883 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1884 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1885 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1886 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1888 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1889 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1890 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1892 #endif /* USDT2 */
1894 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1895 JNIWrapper("CallVoidMethod");
1896 #ifndef USDT2
1897 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1898 #else /* USDT2 */
1899 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1900 env, obj, (uintptr_t) methodID);
1901 #endif /* USDT2 */
1902 DT_VOID_RETURN_MARK(CallVoidMethod);
1904 va_list args;
1905 va_start(args, methodID);
1906 JavaValue jvalue(T_VOID);
1907 JNI_ArgumentPusherVaArg ap(methodID, args);
1908 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1909 va_end(args);
1910 JNI_END
1913 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1914 JNIWrapper("CallVoidMethodV");
1915 #ifndef USDT2
1916 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1917 #else /* USDT2 */
1918 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1919 env, obj, (uintptr_t) methodID);
1920 #endif /* USDT2 */
1921 DT_VOID_RETURN_MARK(CallVoidMethodV);
1923 JavaValue jvalue(T_VOID);
1924 JNI_ArgumentPusherVaArg ap(methodID, args);
1925 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1926 JNI_END
1929 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1930 JNIWrapper("CallVoidMethodA");
1931 #ifndef USDT2
1932 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1933 #else /* USDT2 */
1934 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1935 env, obj, (uintptr_t) methodID);
1936 #endif /* USDT2 */
1937 DT_VOID_RETURN_MARK(CallVoidMethodA);
1939 JavaValue jvalue(T_VOID);
1940 JNI_ArgumentPusherArray ap(methodID, args);
1941 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1942 JNI_END
1945 #ifndef USDT2
1946 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1947 \
1948 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1949 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1950 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1951 \
1952 JNI_ENTRY(ResultType, \
1953 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1954 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1955 \
1956 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1957 ResultType ret;\
1958 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1959 (const ResultType&)ret);\
1960 \
1961 va_list args; \
1962 va_start(args, methodID); \
1963 JavaValue jvalue(Tag); \
1964 JNI_ArgumentPusherVaArg ap(methodID, args); \
1965 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1966 va_end(args); \
1967 ret = jvalue.get_##ResultType(); \
1968 return ret;\
1969 JNI_END \
1970 \
1971 JNI_ENTRY(ResultType, \
1972 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1973 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1974 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1975 ResultType ret;\
1976 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1977 (const ResultType&)ret);\
1978 \
1979 JavaValue jvalue(Tag); \
1980 JNI_ArgumentPusherVaArg ap(methodID, args); \
1981 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1982 ret = jvalue.get_##ResultType(); \
1983 return ret;\
1984 JNI_END \
1985 \
1986 JNI_ENTRY(ResultType, \
1987 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1988 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1989 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1990 ResultType ret;\
1991 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1992 (const ResultType&)ret);\
1993 \
1994 JavaValue jvalue(Tag); \
1995 JNI_ArgumentPusherArray ap(methodID, args); \
1996 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1997 ret = jvalue.get_##ResultType(); \
1998 return ret;\
1999 JNI_END
2001 // the runtime type of subword integral basic types is integer
2002 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2003 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2004 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2005 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2007 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2008 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2009 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2010 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2011 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2014 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2015 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2016 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2018 #else /* USDT2 */
2020 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2021 , EntryProbe, ReturnProbe) \
2022 \
2023 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2024 , ReturnProbe);\
2025 \
2026 JNI_ENTRY(ResultType, \
2027 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2028 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2029 \
2030 EntryProbe;\
2031 ResultType ret;\
2032 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2033 (const ResultType&)ret);\
2034 \
2035 va_list args; \
2036 va_start(args, methodID); \
2037 JavaValue jvalue(Tag); \
2038 JNI_ArgumentPusherVaArg ap(methodID, args); \
2039 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2040 va_end(args); \
2041 ret = jvalue.get_##ResultType(); \
2042 return ret;\
2043 JNI_END
2045 // the runtime type of subword integral basic types is integer
2046 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2047 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2048 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2049 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2050 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2051 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2052 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2053 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2054 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2055 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2056 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2057 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2059 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2060 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2061 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2062 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2063 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2064 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2065 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2066 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2067 // Float and double probes don't return value because dtrace doesn't currently support it
2068 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2069 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2070 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2071 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2072 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2073 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2074 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2076 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2077 , EntryProbe, ReturnProbe) \
2078 \
2079 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2080 , ReturnProbe);\
2081 \
2082 JNI_ENTRY(ResultType, \
2083 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2084 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2085 \
2086 EntryProbe;\
2087 ResultType ret;\
2088 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2089 (const ResultType&)ret);\
2090 \
2091 JavaValue jvalue(Tag); \
2092 JNI_ArgumentPusherVaArg ap(methodID, args); \
2093 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2094 ret = jvalue.get_##ResultType(); \
2095 return ret;\
2096 JNI_END
2098 // the runtime type of subword integral basic types is integer
2099 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2100 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2101 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2102 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2103 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2104 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2105 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2106 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2107 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2108 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2109 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2110 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2112 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2113 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2114 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2115 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2116 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2117 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2118 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2119 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2120 // Float and double probes don't return value because dtrace doesn't currently support it
2121 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2122 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2123 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2124 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2125 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2126 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2127 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2129 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2130 , EntryProbe, ReturnProbe) \
2131 \
2132 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2133 , ReturnProbe);\
2134 \
2135 JNI_ENTRY(ResultType, \
2136 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2137 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2138 \
2139 EntryProbe;\
2140 ResultType ret;\
2141 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2142 (const ResultType&)ret);\
2143 \
2144 JavaValue jvalue(Tag); \
2145 JNI_ArgumentPusherArray ap(methodID, args); \
2146 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2147 ret = jvalue.get_##ResultType(); \
2148 return ret;\
2149 JNI_END
2151 // the runtime type of subword integral basic types is integer
2152 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2153 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2154 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2155 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2156 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2157 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2158 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2159 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2160 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2161 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2162 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2163 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2165 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2166 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2167 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2168 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2169 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2170 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2171 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2172 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2173 // Float and double probes don't return value because dtrace doesn't currently support it
2174 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2175 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2176 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2177 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2178 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2179 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2180 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2182 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2183 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2184 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2185 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2186 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2187 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2188 #endif /* USDT2 */
2190 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2191 JNIWrapper("CallNonvirtualVoidMethod");
2193 #ifndef USDT2
2194 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2195 env, obj, cls, methodID);
2196 #else /* USDT2 */
2197 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2198 env, obj, cls, (uintptr_t) methodID);
2199 #endif /* USDT2 */
2200 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2202 va_list args;
2203 va_start(args, methodID);
2204 JavaValue jvalue(T_VOID);
2205 JNI_ArgumentPusherVaArg ap(methodID, args);
2206 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2207 va_end(args);
2208 JNI_END
2211 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2212 JNIWrapper("CallNonvirtualVoidMethodV");
2214 #ifndef USDT2
2215 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2216 env, obj, cls, methodID);
2217 #else /* USDT2 */
2218 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2219 env, obj, cls, (uintptr_t) methodID);
2220 #endif /* USDT2 */
2221 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2223 JavaValue jvalue(T_VOID);
2224 JNI_ArgumentPusherVaArg ap(methodID, args);
2225 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2226 JNI_END
2229 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2230 JNIWrapper("CallNonvirtualVoidMethodA");
2231 #ifndef USDT2
2232 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2233 env, obj, cls, methodID);
2234 #else /* USDT2 */
2235 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2236 env, obj, cls, (uintptr_t) methodID);
2237 #endif /* USDT2 */
2238 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2239 JavaValue jvalue(T_VOID);
2240 JNI_ArgumentPusherArray ap(methodID, args);
2241 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2242 JNI_END
2245 #ifndef USDT2
2246 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2247 \
2248 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2249 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2250 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2251 \
2252 JNI_ENTRY(ResultType, \
2253 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2254 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2255 \
2256 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2257 ResultType ret = 0;\
2258 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2259 (const ResultType&)ret);\
2260 \
2261 va_list args; \
2262 va_start(args, methodID); \
2263 JavaValue jvalue(Tag); \
2264 JNI_ArgumentPusherVaArg ap(methodID, args); \
2265 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2266 va_end(args); \
2267 ret = jvalue.get_##ResultType(); \
2268 return ret;\
2269 JNI_END \
2270 \
2271 JNI_ENTRY(ResultType, \
2272 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2273 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2274 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2275 ResultType ret = 0;\
2276 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2277 (const ResultType&)ret);\
2278 \
2279 JavaValue jvalue(Tag); \
2280 JNI_ArgumentPusherVaArg ap(methodID, args); \
2281 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2282 ret = jvalue.get_##ResultType(); \
2283 return ret;\
2284 JNI_END \
2285 \
2286 JNI_ENTRY(ResultType, \
2287 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2288 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2289 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2290 ResultType ret = 0;\
2291 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2292 (const ResultType&)ret);\
2293 \
2294 JavaValue jvalue(Tag); \
2295 JNI_ArgumentPusherArray ap(methodID, args); \
2296 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2297 ret = jvalue.get_##ResultType(); \
2298 return ret;\
2299 JNI_END
2301 // the runtime type of subword integral basic types is integer
2302 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2303 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2304 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2305 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2307 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2308 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2309 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2310 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2311 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2314 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2315 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2316 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2318 #else /* USDT2 */
2320 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2321 , EntryProbe, ResultProbe) \
2322 \
2323 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2324 , ResultProbe); \
2325 \
2326 JNI_ENTRY(ResultType, \
2327 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2328 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2329 \
2330 EntryProbe; \
2331 ResultType ret = 0;\
2332 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2333 (const ResultType&)ret);\
2334 \
2335 va_list args; \
2336 va_start(args, methodID); \
2337 JavaValue jvalue(Tag); \
2338 JNI_ArgumentPusherVaArg ap(methodID, args); \
2339 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2340 va_end(args); \
2341 ret = jvalue.get_##ResultType(); \
2342 return ret;\
2343 JNI_END
2345 // the runtime type of subword integral basic types is integer
2346 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2347 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2348 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2349 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2350 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2351 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2352 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2353 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2354 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2355 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2356 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2357 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2359 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2360 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2361 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2362 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2363 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2364 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2365 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2366 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2367 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2368 // Float and double probes don't return value because dtrace doesn't currently support it
2369 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2370 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2371 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2372 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2373 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2374 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2376 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2377 , EntryProbe, ResultProbe) \
2378 \
2379 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2380 , ResultProbe); \
2381 \
2382 JNI_ENTRY(ResultType, \
2383 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2384 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2385 \
2386 EntryProbe; \
2387 ResultType ret = 0;\
2388 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2389 (const ResultType&)ret);\
2390 \
2391 JavaValue jvalue(Tag); \
2392 JNI_ArgumentPusherVaArg ap(methodID, args); \
2393 /* Make sure class is initialized before trying to invoke its method */ \
2394 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2395 k()->initialize(CHECK_0); \
2396 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2397 va_end(args); \
2398 ret = jvalue.get_##ResultType(); \
2399 return ret;\
2400 JNI_END
2402 // the runtime type of subword integral basic types is integer
2403 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2404 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2405 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2406 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2407 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2408 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2409 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2410 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2411 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2412 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2413 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2414 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2416 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2417 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2418 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2419 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2420 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2421 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2422 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2423 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2424 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2425 // Float and double probes don't return value because dtrace doesn't currently support it
2426 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2427 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2428 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2429 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2430 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2431 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2433 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2434 , EntryProbe, ResultProbe) \
2435 \
2436 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2437 , ResultProbe); \
2438 \
2439 JNI_ENTRY(ResultType, \
2440 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2441 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2442 \
2443 EntryProbe; \
2444 ResultType ret = 0;\
2445 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2446 (const ResultType&)ret);\
2447 \
2448 JavaValue jvalue(Tag); \
2449 JNI_ArgumentPusherArray ap(methodID, args); \
2450 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2451 ret = jvalue.get_##ResultType(); \
2452 return ret;\
2453 JNI_END
2455 // the runtime type of subword integral basic types is integer
2456 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2457 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2458 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2459 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2460 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2461 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2462 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2463 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2464 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2465 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2466 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2467 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2469 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2470 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2471 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2472 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2473 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2474 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2475 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2476 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2477 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2478 // Float and double probes don't return value because dtrace doesn't currently support it
2479 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2480 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2481 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2482 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2483 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2484 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2486 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2487 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2488 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2489 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2490 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2491 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2492 #endif /* USDT2 */
2494 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2495 JNIWrapper("CallStaticVoidMethod");
2496 #ifndef USDT2
2497 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2498 #else /* USDT2 */
2499 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2500 env, cls, (uintptr_t) methodID);
2501 #endif /* USDT2 */
2502 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2504 va_list args;
2505 va_start(args, methodID);
2506 JavaValue jvalue(T_VOID);
2507 JNI_ArgumentPusherVaArg ap(methodID, args);
2508 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2509 va_end(args);
2510 JNI_END
2513 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2514 JNIWrapper("CallStaticVoidMethodV");
2515 #ifndef USDT2
2516 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2517 #else /* USDT2 */
2518 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2519 env, cls, (uintptr_t) methodID);
2520 #endif /* USDT2 */
2521 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2523 JavaValue jvalue(T_VOID);
2524 JNI_ArgumentPusherVaArg ap(methodID, args);
2525 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2526 JNI_END
2529 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2530 JNIWrapper("CallStaticVoidMethodA");
2531 #ifndef USDT2
2532 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2533 #else /* USDT2 */
2534 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2535 env, cls, (uintptr_t) methodID);
2536 #endif /* USDT2 */
2537 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2539 JavaValue jvalue(T_VOID);
2540 JNI_ArgumentPusherArray ap(methodID, args);
2541 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2542 JNI_END
2545 //
2546 // Accessing Fields
2547 //
2550 #ifndef USDT2
2551 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2552 #else /* USDT2 */
2553 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2554 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2555 #endif /* USDT2 */
2557 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2558 const char *name, const char *sig))
2559 JNIWrapper("GetFieldID");
2560 #ifndef USDT2
2561 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2562 #else /* USDT2 */
2563 HOTSPOT_JNI_GETFIELDID_ENTRY(
2564 env, clazz, (char *) name, (char *) sig);
2565 #endif /* USDT2 */
2566 jfieldID ret = 0;
2567 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2569 // The class should have been loaded (we have an instance of the class
2570 // passed in) so the field and signature should already be in the symbol
2571 // table. If they're not there, the field doesn't exist.
2572 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2573 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2574 if (fieldname == NULL || signame == NULL) {
2575 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2576 }
2577 KlassHandle k(THREAD,
2578 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2579 // Make sure class is initialized before handing id's out to fields
2580 k()->initialize(CHECK_NULL);
2582 fieldDescriptor fd;
2583 if (!k()->oop_is_instance() ||
2584 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2585 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2586 }
2588 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2589 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2590 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2591 return ret;
2592 JNI_END
2595 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2596 JNIWrapper("GetObjectField");
2597 #ifndef USDT2
2598 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2599 #else /* USDT2 */
2600 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2601 env, obj, (uintptr_t) fieldID);
2602 #endif /* USDT2 */
2603 oop o = JNIHandles::resolve_non_null(obj);
2604 Klass* k = o->klass();
2605 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2606 // Keep JVMTI addition small and only check enabled flag here.
2607 // jni_GetField_probe() assumes that is okay to create handles.
2608 if (JvmtiExport::should_post_field_access()) {
2609 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2610 }
2611 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2612 #if INCLUDE_ALL_GCS
2613 // If G1 is enabled and we are accessing the value of the referent
2614 // field in a reference object then we need to register a non-null
2615 // referent with the SATB barrier.
2616 if (UseG1GC) {
2617 bool needs_barrier = false;
2619 if (ret != NULL &&
2620 offset == java_lang_ref_Reference::referent_offset &&
2621 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2622 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2623 needs_barrier = true;
2624 }
2626 if (needs_barrier) {
2627 oop referent = JNIHandles::resolve(ret);
2628 G1SATBCardTableModRefBS::enqueue(referent);
2629 }
2630 }
2631 #endif // INCLUDE_ALL_GCS
2632 #ifndef USDT2
2633 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2634 #else /* USDT2 */
2635 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2636 ret);
2637 #endif /* USDT2 */
2638 return ret;
2639 JNI_END
2642 #ifndef USDT2
2643 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2644 \
2645 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2646 \
2647 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2648 JNIWrapper("Get" XSTR(Result) "Field"); \
2649 \
2650 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2651 Return ret = 0;\
2652 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2653 \
2654 oop o = JNIHandles::resolve_non_null(obj); \
2655 Klass* k = o->klass(); \
2656 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2657 /* Keep JVMTI addition small and only check enabled flag here. */ \
2658 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2659 /* and creates a ResetNoHandleMark. */ \
2660 if (JvmtiExport::should_post_field_access()) { \
2661 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2662 } \
2663 ret = o->Fieldname##_field(offset); \
2664 return ret; \
2665 JNI_END
2667 DEFINE_GETFIELD(jboolean, bool, Boolean)
2668 DEFINE_GETFIELD(jbyte, byte, Byte)
2669 DEFINE_GETFIELD(jchar, char, Char)
2670 DEFINE_GETFIELD(jshort, short, Short)
2671 DEFINE_GETFIELD(jint, int, Int)
2672 DEFINE_GETFIELD(jlong, long, Long)
2673 DEFINE_GETFIELD(jfloat, float, Float)
2674 DEFINE_GETFIELD(jdouble, double, Double)
2676 #else /* USDT2 */
2678 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2679 , EntryProbe, ReturnProbe) \
2680 \
2681 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2682 , ReturnProbe); \
2683 \
2684 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2685 JNIWrapper("Get" XSTR(Result) "Field"); \
2686 \
2687 EntryProbe; \
2688 Return ret = 0;\
2689 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2690 \
2691 oop o = JNIHandles::resolve_non_null(obj); \
2692 Klass* k = o->klass(); \
2693 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2694 /* Keep JVMTI addition small and only check enabled flag here. */ \
2695 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2696 /* and creates a ResetNoHandleMark. */ \
2697 if (JvmtiExport::should_post_field_access()) { \
2698 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2699 } \
2700 ret = o->Fieldname##_field(offset); \
2701 return ret; \
2702 JNI_END
2704 DEFINE_GETFIELD(jboolean, bool, Boolean
2705 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2706 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2707 DEFINE_GETFIELD(jbyte, byte, Byte
2708 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2709 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2710 DEFINE_GETFIELD(jchar, char, Char
2711 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2712 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2713 DEFINE_GETFIELD(jshort, short, Short
2714 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2715 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2716 DEFINE_GETFIELD(jint, int, Int
2717 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2718 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2719 DEFINE_GETFIELD(jlong, long, Long
2720 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2721 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2722 // Float and double probes don't return value because dtrace doesn't currently support it
2723 DEFINE_GETFIELD(jfloat, float, Float
2724 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2725 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2726 DEFINE_GETFIELD(jdouble, double, Double
2727 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2728 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2729 #endif /* USDT2 */
2731 address jni_GetBooleanField_addr() {
2732 return (address)jni_GetBooleanField;
2733 }
2734 address jni_GetByteField_addr() {
2735 return (address)jni_GetByteField;
2736 }
2737 address jni_GetCharField_addr() {
2738 return (address)jni_GetCharField;
2739 }
2740 address jni_GetShortField_addr() {
2741 return (address)jni_GetShortField;
2742 }
2743 address jni_GetIntField_addr() {
2744 return (address)jni_GetIntField;
2745 }
2746 address jni_GetLongField_addr() {
2747 return (address)jni_GetLongField;
2748 }
2749 address jni_GetFloatField_addr() {
2750 return (address)jni_GetFloatField;
2751 }
2752 address jni_GetDoubleField_addr() {
2753 return (address)jni_GetDoubleField;
2754 }
2756 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2757 JNIWrapper("SetObjectField");
2758 #ifndef USDT2
2759 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2760 #else /* USDT2 */
2761 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2762 env, obj, (uintptr_t) fieldID, value);
2763 #endif /* USDT2 */
2764 oop o = JNIHandles::resolve_non_null(obj);
2765 Klass* k = o->klass();
2766 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2767 // Keep JVMTI addition small and only check enabled flag here.
2768 // jni_SetField_probe_nh() assumes that is not okay to create handles
2769 // and creates a ResetNoHandleMark.
2770 if (JvmtiExport::should_post_field_modification()) {
2771 jvalue field_value;
2772 field_value.l = value;
2773 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2774 }
2775 o->obj_field_put(offset, JNIHandles::resolve(value));
2776 #ifndef USDT2
2777 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2778 #else /* USDT2 */
2779 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2780 );
2781 #endif /* USDT2 */
2782 JNI_END
2784 #ifndef USDT2
2785 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2786 \
2787 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2788 JNIWrapper("Set" XSTR(Result) "Field"); \
2789 \
2790 FP_SELECT_##Result( \
2791 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2792 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2793 \
2794 oop o = JNIHandles::resolve_non_null(obj); \
2795 Klass* k = o->klass(); \
2796 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2797 /* Keep JVMTI addition small and only check enabled flag here. */ \
2798 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2799 /* and creates a ResetNoHandleMark. */ \
2800 if (JvmtiExport::should_post_field_modification()) { \
2801 jvalue field_value; \
2802 field_value.unionType = value; \
2803 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2804 } \
2805 o->Fieldname##_field_put(offset, value); \
2806 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2807 JNI_END
2809 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2810 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2811 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2812 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2813 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2814 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2815 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2816 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2818 #else /* USDT2 */
2820 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2821 , EntryProbe, ReturnProbe) \
2822 \
2823 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2824 JNIWrapper("Set" XSTR(Result) "Field"); \
2825 \
2826 EntryProbe; \
2827 \
2828 oop o = JNIHandles::resolve_non_null(obj); \
2829 Klass* k = o->klass(); \
2830 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2831 /* Keep JVMTI addition small and only check enabled flag here. */ \
2832 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2833 /* and creates a ResetNoHandleMark. */ \
2834 if (JvmtiExport::should_post_field_modification()) { \
2835 jvalue field_value; \
2836 field_value.unionType = value; \
2837 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2838 } \
2839 o->Fieldname##_field_put(offset, value); \
2840 ReturnProbe; \
2841 JNI_END
2843 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2844 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2845 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2846 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2847 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2848 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2849 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2850 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2851 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2852 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2853 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2854 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2855 DEFINE_SETFIELD(jint, int, Int, 'I', i
2856 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2857 HOTSPOT_JNI_SETINTFIELD_RETURN())
2858 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2859 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2860 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2861 // Float and double probes don't return value because dtrace doesn't currently support it
2862 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2863 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2864 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2865 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2866 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2867 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2868 #endif /* USDT2 */
2870 #ifndef USDT2
2871 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2872 #else /* USDT2 */
2873 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2874 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2875 #endif /* USDT2 */
2877 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2878 JNIWrapper("ToReflectedField");
2879 #ifndef USDT2
2880 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2881 env, cls, fieldID, isStatic);
2882 #else /* USDT2 */
2883 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2884 env, cls, (uintptr_t) fieldID, isStatic);
2885 #endif /* USDT2 */
2886 jobject ret = NULL;
2887 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2889 fieldDescriptor fd;
2890 bool found = false;
2891 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2893 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2895 if (isStatic) {
2896 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2897 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2898 assert(id->is_static_field_id(), "invalid static field id");
2899 found = id->find_local_field(&fd);
2900 } else {
2901 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2902 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2903 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2904 }
2905 assert(found, "bad fieldID passed into jni_ToReflectedField");
2906 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2907 ret = JNIHandles::make_local(env, reflected);
2908 return ret;
2909 JNI_END
2912 //
2913 // Accessing Static Fields
2914 //
2915 #ifndef USDT2
2916 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2917 #else /* USDT2 */
2918 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2919 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2920 #endif /* USDT2 */
2922 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2923 const char *name, const char *sig))
2924 JNIWrapper("GetStaticFieldID");
2925 #ifndef USDT2
2926 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2927 #else /* USDT2 */
2928 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2929 env, clazz, (char *) name, (char *) sig);
2930 #endif /* USDT2 */
2931 jfieldID ret = NULL;
2932 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2934 // The class should have been loaded (we have an instance of the class
2935 // passed in) so the field and signature should already be in the symbol
2936 // table. If they're not there, the field doesn't exist.
2937 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2938 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2939 if (fieldname == NULL || signame == NULL) {
2940 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2941 }
2942 KlassHandle k(THREAD,
2943 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2944 // Make sure class is initialized before handing id's out to static fields
2945 k()->initialize(CHECK_NULL);
2947 fieldDescriptor fd;
2948 if (!k()->oop_is_instance() ||
2949 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2950 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2951 }
2953 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2954 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2955 debug_only(id->set_is_static_field_id();)
2957 debug_only(id->verify(fd.field_holder()));
2959 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2960 return ret;
2961 JNI_END
2964 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2965 JNIWrapper("GetStaticObjectField");
2966 #ifndef USDT2
2967 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2968 #else /* USDT2 */
2969 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2970 env, clazz, (uintptr_t) fieldID);
2971 #endif /* USDT2 */
2972 #if INCLUDE_JNI_CHECK
2973 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2974 #endif // INCLUDE_JNI_CHECK
2975 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2976 assert(id->is_static_field_id(), "invalid static field id");
2977 // Keep JVMTI addition small and only check enabled flag here.
2978 // jni_GetField_probe() assumes that is okay to create handles.
2979 if (JvmtiExport::should_post_field_access()) {
2980 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2981 }
2982 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2983 #ifndef USDT2
2984 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2985 #else /* USDT2 */
2986 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2987 ret);
2988 #endif /* USDT2 */
2989 return ret;
2990 JNI_END
2992 #ifndef USDT2
2993 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
2994 \
2995 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
2996 \
2997 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2998 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2999 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3000 Return ret = 0;\
3001 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3002 (const Return&)ret);\
3003 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3004 assert(id->is_static_field_id(), "invalid static field id"); \
3005 /* Keep JVMTI addition small and only check enabled flag here. */ \
3006 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3007 if (JvmtiExport::should_post_field_access()) { \
3008 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3009 } \
3010 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3011 return ret;\
3012 JNI_END
3014 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3015 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3016 DEFINE_GETSTATICFIELD(jchar, char, Char)
3017 DEFINE_GETSTATICFIELD(jshort, short, Short)
3018 DEFINE_GETSTATICFIELD(jint, int, Int)
3019 DEFINE_GETSTATICFIELD(jlong, long, Long)
3020 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3021 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3023 #else /* USDT2 */
3025 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3026 , EntryProbe, ReturnProbe) \
3027 \
3028 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3029 , ReturnProbe); \
3030 \
3031 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3032 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3033 EntryProbe; \
3034 Return ret = 0;\
3035 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3036 (const Return&)ret);\
3037 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3038 assert(id->is_static_field_id(), "invalid static field id"); \
3039 /* Keep JVMTI addition small and only check enabled flag here. */ \
3040 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3041 if (JvmtiExport::should_post_field_access()) { \
3042 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3043 } \
3044 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3045 return ret;\
3046 JNI_END
3048 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3049 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3050 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3051 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3052 DEFINE_GETSTATICFIELD(jchar, char, Char
3053 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3054 DEFINE_GETSTATICFIELD(jshort, short, Short
3055 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3056 DEFINE_GETSTATICFIELD(jint, int, Int
3057 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3058 DEFINE_GETSTATICFIELD(jlong, long, Long
3059 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3060 // Float and double probes don't return value because dtrace doesn't currently support it
3061 DEFINE_GETSTATICFIELD(jfloat, float, Float
3062 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3063 DEFINE_GETSTATICFIELD(jdouble, double, Double
3064 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3065 #endif /* USDT2 */
3067 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3068 JNIWrapper("SetStaticObjectField");
3069 #ifndef USDT2
3070 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3071 #else /* USDT2 */
3072 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3073 env, clazz, (uintptr_t) fieldID, value);
3074 #endif /* USDT2 */
3075 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3076 assert(id->is_static_field_id(), "invalid static field id");
3077 // Keep JVMTI addition small and only check enabled flag here.
3078 // jni_SetField_probe() assumes that is okay to create handles.
3079 if (JvmtiExport::should_post_field_modification()) {
3080 jvalue field_value;
3081 field_value.l = value;
3082 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3083 }
3084 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3085 #ifndef USDT2
3086 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3087 #else /* USDT2 */
3088 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3089 );
3090 #endif /* USDT2 */
3091 JNI_END
3094 #ifndef USDT2
3095 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3096 \
3097 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3098 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3099 FP_SELECT_##Result( \
3100 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3101 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3102 \
3103 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3104 assert(id->is_static_field_id(), "invalid static field id"); \
3105 /* Keep JVMTI addition small and only check enabled flag here. */ \
3106 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3107 if (JvmtiExport::should_post_field_modification()) { \
3108 jvalue field_value; \
3109 field_value.unionType = value; \
3110 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3111 } \
3112 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3113 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3114 JNI_END
3116 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3117 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3118 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3119 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3120 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3121 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3122 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3123 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3125 #else /* USDT2 */
3127 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3128 , EntryProbe, ReturnProbe) \
3129 \
3130 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3131 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3132 EntryProbe; \
3133 \
3134 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3135 assert(id->is_static_field_id(), "invalid static field id"); \
3136 /* Keep JVMTI addition small and only check enabled flag here. */ \
3137 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3138 if (JvmtiExport::should_post_field_modification()) { \
3139 jvalue field_value; \
3140 field_value.unionType = value; \
3141 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3142 } \
3143 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3144 ReturnProbe;\
3145 JNI_END
3147 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3148 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3149 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3150 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3151 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3152 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3153 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3154 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3155 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3156 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3157 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3158 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3159 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3160 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3161 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3162 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3163 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3164 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3165 // Float and double probes don't return value because dtrace doesn't currently support it
3166 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3167 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3168 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3169 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3170 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3171 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3172 #endif /* USDT2 */
3174 //
3175 // String Operations
3176 //
3178 // Unicode Interface
3180 #ifndef USDT2
3181 DT_RETURN_MARK_DECL(NewString, jstring);
3182 #else /* USDT2 */
3183 DT_RETURN_MARK_DECL(NewString, jstring
3184 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3185 #endif /* USDT2 */
3187 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3188 JNIWrapper("NewString");
3189 #ifndef USDT2
3190 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3191 #else /* USDT2 */
3192 HOTSPOT_JNI_NEWSTRING_ENTRY(
3193 env, (uint16_t *) unicodeChars, len);
3194 #endif /* USDT2 */
3195 jstring ret = NULL;
3196 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3197 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3198 ret = (jstring) JNIHandles::make_local(env, string);
3199 return ret;
3200 JNI_END
3203 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3204 JNIWrapper("GetStringLength");
3205 #ifndef USDT2
3206 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3207 #else /* USDT2 */
3208 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3209 env, string);
3210 #endif /* USDT2 */
3211 jsize ret = 0;
3212 oop s = JNIHandles::resolve_non_null(string);
3213 if (java_lang_String::value(s) != NULL) {
3214 ret = java_lang_String::length(s);
3215 }
3216 #ifndef USDT2
3217 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3218 #else /* USDT2 */
3219 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3220 ret);
3221 #endif /* USDT2 */
3222 return ret;
3223 JNI_END
3226 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3227 JNIEnv *env, jstring string, jboolean *isCopy))
3228 JNIWrapper("GetStringChars");
3229 #ifndef USDT2
3230 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3231 #else /* USDT2 */
3232 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3233 env, string, (uintptr_t *) isCopy);
3234 #endif /* USDT2 */
3235 jchar* buf = NULL;
3236 oop s = JNIHandles::resolve_non_null(string);
3237 typeArrayOop s_value = java_lang_String::value(s);
3238 if (s_value != NULL) {
3239 int s_len = java_lang_String::length(s);
3240 int s_offset = java_lang_String::offset(s);
3241 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3242 /* JNI Specification states return NULL on OOM */
3243 if (buf != NULL) {
3244 if (s_len > 0) {
3245 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3246 }
3247 buf[s_len] = 0;
3248 //%note jni_5
3249 if (isCopy != NULL) {
3250 *isCopy = JNI_TRUE;
3251 }
3252 }
3253 }
3254 #ifndef USDT2
3255 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3256 #else /* USDT2 */
3257 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3258 buf);
3259 #endif /* USDT2 */
3260 return buf;
3261 JNI_END
3264 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3265 JNIWrapper("ReleaseStringChars");
3266 #ifndef USDT2
3267 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3268 #else /* USDT2 */
3269 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3270 env, str, (uint16_t *) chars);
3271 #endif /* USDT2 */
3272 //%note jni_6
3273 if (chars != NULL) {
3274 // Since String objects are supposed to be immutable, don't copy any
3275 // new data back. A bad user will have to go after the char array.
3276 FreeHeap((void*) chars);
3277 }
3278 #ifndef USDT2
3279 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3280 #else /* USDT2 */
3281 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3282 );
3283 #endif /* USDT2 */
3284 JNI_END
3287 // UTF Interface
3289 #ifndef USDT2
3290 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3291 #else /* USDT2 */
3292 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3293 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3294 #endif /* USDT2 */
3296 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3297 JNIWrapper("NewStringUTF");
3298 #ifndef USDT2
3299 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3300 #else /* USDT2 */
3301 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3302 env, (char *) bytes);
3303 #endif /* USDT2 */
3304 jstring ret;
3305 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3307 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3308 ret = (jstring) JNIHandles::make_local(env, result);
3309 return ret;
3310 JNI_END
3313 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3314 JNIWrapper("GetStringUTFLength");
3315 #ifndef USDT2
3316 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3317 #else /* USDT2 */
3318 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3319 env, string);
3320 #endif /* USDT2 */
3321 jsize ret = 0;
3322 oop java_string = JNIHandles::resolve_non_null(string);
3323 if (java_lang_String::value(java_string) != NULL) {
3324 ret = java_lang_String::utf8_length(java_string);
3325 }
3326 #ifndef USDT2
3327 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3328 #else /* USDT2 */
3329 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3330 ret);
3331 #endif /* USDT2 */
3332 return ret;
3333 JNI_END
3336 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3337 JNIWrapper("GetStringUTFChars");
3338 #ifndef USDT2
3339 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3340 #else /* USDT2 */
3341 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3342 env, string, (uintptr_t *) isCopy);
3343 #endif /* USDT2 */
3344 char* result = NULL;
3345 oop java_string = JNIHandles::resolve_non_null(string);
3346 if (java_lang_String::value(java_string) != NULL) {
3347 size_t length = java_lang_String::utf8_length(java_string);
3348 /* JNI Specification states return NULL on OOM */
3349 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3350 if (result != NULL) {
3351 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3352 if (isCopy != NULL) {
3353 *isCopy = JNI_TRUE;
3354 }
3355 }
3356 }
3357 #ifndef USDT2
3358 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3359 #else /* USDT2 */
3360 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3361 result);
3362 #endif /* USDT2 */
3363 return result;
3364 JNI_END
3367 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3368 JNIWrapper("ReleaseStringUTFChars");
3369 #ifndef USDT2
3370 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3371 #else /* USDT2 */
3372 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3373 env, str, (char *) chars);
3374 #endif /* USDT2 */
3375 if (chars != NULL) {
3376 FreeHeap((char*) chars);
3377 }
3378 #ifndef USDT2
3379 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3380 #else /* USDT2 */
3381 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3382 );
3383 #endif /* USDT2 */
3384 JNI_END
3387 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3388 JNIWrapper("GetArrayLength");
3389 #ifndef USDT2
3390 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3391 #else /* USDT2 */
3392 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3393 env, array);
3394 #endif /* USDT2 */
3395 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3396 assert(a->is_array(), "must be array");
3397 jsize ret = a->length();
3398 #ifndef USDT2
3399 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3400 #else /* USDT2 */
3401 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3402 ret);
3403 #endif /* USDT2 */
3404 return ret;
3405 JNI_END
3408 //
3409 // Object Array Operations
3410 //
3412 #ifndef USDT2
3413 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3414 #else /* USDT2 */
3415 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3416 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3417 #endif /* USDT2 */
3419 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3420 JNIWrapper("NewObjectArray");
3421 #ifndef USDT2
3422 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3423 #else /* USDT2 */
3424 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3425 env, length, elementClass, initialElement);
3426 #endif /* USDT2 */
3427 jobjectArray ret = NULL;
3428 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3429 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3430 Klass* ako = ek()->array_klass(CHECK_NULL);
3431 KlassHandle ak = KlassHandle(THREAD, ako);
3432 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3433 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3434 oop initial_value = JNIHandles::resolve(initialElement);
3435 if (initial_value != NULL) { // array already initialized with NULL
3436 for (int index = 0; index < length; index++) {
3437 result->obj_at_put(index, initial_value);
3438 }
3439 }
3440 ret = (jobjectArray) JNIHandles::make_local(env, result);
3441 return ret;
3442 JNI_END
3444 #ifndef USDT2
3445 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3446 #else /* USDT2 */
3447 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3448 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3449 #endif /* USDT2 */
3451 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3452 JNIWrapper("GetObjectArrayElement");
3453 #ifndef USDT2
3454 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3455 #else /* USDT2 */
3456 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3457 env, array, index);
3458 #endif /* USDT2 */
3459 jobject ret = NULL;
3460 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3461 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3462 if (a->is_within_bounds(index)) {
3463 ret = JNIHandles::make_local(env, a->obj_at(index));
3464 return ret;
3465 } else {
3466 char buf[jintAsStringSize];
3467 sprintf(buf, "%d", index);
3468 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3469 }
3470 JNI_END
3472 #ifndef USDT2
3473 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3474 #else /* USDT2 */
3475 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3476 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3477 #endif /* USDT2 */
3479 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3480 JNIWrapper("SetObjectArrayElement");
3481 #ifndef USDT2
3482 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3483 #else /* USDT2 */
3484 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3485 env, array, index, value);
3486 #endif /* USDT2 */
3487 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3489 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3490 oop v = JNIHandles::resolve(value);
3491 if (a->is_within_bounds(index)) {
3492 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3493 a->obj_at_put(index, v);
3494 } else {
3495 THROW(vmSymbols::java_lang_ArrayStoreException());
3496 }
3497 } else {
3498 char buf[jintAsStringSize];
3499 sprintf(buf, "%d", index);
3500 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3501 }
3502 JNI_END
3505 #ifndef USDT2
3506 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3507 \
3508 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3509 \
3510 JNI_ENTRY(Return, \
3511 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3512 JNIWrapper("New" XSTR(Result) "Array"); \
3513 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3514 Return ret = NULL;\
3515 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3516 \
3517 oop obj= oopFactory::Allocator(len, CHECK_0); \
3518 ret = (Return) JNIHandles::make_local(env, obj); \
3519 return ret;\
3520 JNI_END
3522 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3523 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3524 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3525 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3526 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3527 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3528 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3529 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3531 #else /* USDT2 */
3533 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3534 ,EntryProbe,ReturnProbe) \
3535 \
3536 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3537 , ReturnProbe); \
3538 \
3539 JNI_ENTRY(Return, \
3540 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3541 JNIWrapper("New" XSTR(Result) "Array"); \
3542 EntryProbe; \
3543 Return ret = NULL;\
3544 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3545 \
3546 oop obj= oopFactory::Allocator(len, CHECK_0); \
3547 ret = (Return) JNIHandles::make_local(env, obj); \
3548 return ret;\
3549 JNI_END
3551 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3552 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3553 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3554 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3555 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3556 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3557 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3558 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3559 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3560 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3561 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3562 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3563 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3564 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3565 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3566 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3567 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3568 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3569 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3570 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3571 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3572 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3573 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3574 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3575 #endif /* USDT2 */
3577 // Return an address which will fault if the caller writes to it.
3579 static char* get_bad_address() {
3580 static char* bad_address = NULL;
3581 if (bad_address == NULL) {
3582 size_t size = os::vm_allocation_granularity();
3583 bad_address = os::reserve_memory(size);
3584 if (bad_address != NULL) {
3585 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3586 /*is_committed*/false);
3587 }
3588 }
3589 return bad_address;
3590 }
3593 #ifndef USDT2
3594 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3595 \
3596 JNI_QUICK_ENTRY(ElementType*, \
3597 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3598 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3599 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3600 /* allocate an chunk of memory in c land */ \
3601 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3602 ElementType* result; \
3603 int len = a->length(); \
3604 if (len == 0) { \
3605 /* Empty array: legal but useless, can't return NULL. \
3606 * Return a pointer to something useless. \
3607 * Avoid asserts in typeArrayOop. */ \
3608 result = (ElementType*)get_bad_address(); \
3609 } else { \
3610 /* JNI Specification states return NULL on OOM */ \
3611 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3612 if (result != NULL) { \
3613 /* copy the array to the c chunk */ \
3614 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3615 if (isCopy) { \
3616 *isCopy = JNI_TRUE; \
3617 } \
3618 } \
3619 } \
3620 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3621 return result; \
3622 JNI_END
3624 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3625 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3626 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3627 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3628 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3629 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3630 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3631 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3633 #else /* USDT2 */
3635 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3636 , EntryProbe, ReturnProbe) \
3637 \
3638 JNI_QUICK_ENTRY(ElementType*, \
3639 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3640 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3641 EntryProbe; \
3642 /* allocate an chunk of memory in c land */ \
3643 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3644 ElementType* result; \
3645 int len = a->length(); \
3646 if (len == 0) { \
3647 /* Empty array: legal but useless, can't return NULL. \
3648 * Return a pointer to something useless. \
3649 * Avoid asserts in typeArrayOop. */ \
3650 result = (ElementType*)get_bad_address(); \
3651 } else { \
3652 /* JNI Specification states return NULL on OOM */ \
3653 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3654 if (result != NULL) { \
3655 /* copy the array to the c chunk */ \
3656 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3657 if (isCopy) { \
3658 *isCopy = JNI_TRUE; \
3659 } \
3660 } \
3661 } \
3662 ReturnProbe; \
3663 return result; \
3664 JNI_END
3666 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3667 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3668 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3669 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3670 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3671 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3672 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3673 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3674 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3675 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3676 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3677 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3678 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3679 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3680 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3681 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3682 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3683 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3684 // Float and double probes don't return value because dtrace doesn't currently support it
3685 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3686 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3687 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3688 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3689 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3690 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3691 #endif /* USDT2 */
3693 #ifndef USDT2
3694 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3695 \
3696 JNI_QUICK_ENTRY(void, \
3697 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3698 ElementType *buf, jint mode)) \
3699 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3700 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3701 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3702 int len = a->length(); \
3703 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3704 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3705 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3706 } \
3707 if ((mode == 0) || (mode == JNI_ABORT)) { \
3708 FreeHeap(buf); \
3709 } \
3710 } \
3711 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3712 JNI_END
3714 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3715 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3723 #else /* USDT2 */
3725 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3726 , EntryProbe, ReturnProbe);\
3727 \
3728 JNI_QUICK_ENTRY(void, \
3729 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3730 ElementType *buf, jint mode)) \
3731 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3732 EntryProbe; \
3733 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3734 int len = a->length(); \
3735 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3736 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3737 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3738 } \
3739 if ((mode == 0) || (mode == JNI_ABORT)) { \
3740 FreeHeap(buf); \
3741 } \
3742 } \
3743 ReturnProbe; \
3744 JNI_END
3746 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3747 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3748 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3750 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3751 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3753 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3754 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3756 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3757 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3758 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3759 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3760 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3761 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3762 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3763 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3764 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3765 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3766 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3768 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3769 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3770 #endif /* USDT2 */
3772 #ifndef USDT2
3773 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3774 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3775 \
3776 JNI_ENTRY(void, \
3777 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3778 jsize len, ElementType *buf)) \
3779 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3780 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3781 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3782 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3783 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3784 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3785 } else { \
3786 if (len > 0) { \
3787 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3788 memcpy((u_char*) buf, \
3789 (u_char*) src->Tag##_at_addr(start), \
3790 len << sc); \
3791 } \
3792 } \
3793 JNI_END
3795 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3796 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3797 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3798 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3799 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3800 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3801 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3802 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3804 #else /* USDT2 */
3806 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3807 , EntryProbe, ReturnProbe); \
3808 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3809 , ReturnProbe); \
3810 \
3811 JNI_ENTRY(void, \
3812 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3813 jsize len, ElementType *buf)) \
3814 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3815 EntryProbe; \
3816 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3817 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3818 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3819 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3820 } else { \
3821 if (len > 0) { \
3822 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3823 memcpy((u_char*) buf, \
3824 (u_char*) src->Tag##_at_addr(start), \
3825 len << sc); \
3826 } \
3827 } \
3828 JNI_END
3830 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3831 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3832 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3833 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3834 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3835 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3836 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3837 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3838 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3839 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3840 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3841 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3842 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3843 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3844 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3845 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3846 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3847 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3848 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3849 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3850 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3851 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3852 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3853 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3854 #endif /* USDT2 */
3856 #ifndef USDT2
3857 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3858 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3859 \
3860 JNI_ENTRY(void, \
3861 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3862 jsize len, const ElementType *buf)) \
3863 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3864 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3865 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3866 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3867 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3868 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3869 } else { \
3870 if (len > 0) { \
3871 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3872 memcpy((u_char*) dst->Tag##_at_addr(start), \
3873 (u_char*) buf, \
3874 len << sc); \
3875 } \
3876 } \
3877 JNI_END
3879 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3880 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3881 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3882 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3883 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3884 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3885 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3886 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3888 #else /* USDT2 */
3890 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3891 , EntryProbe, ReturnProbe); \
3892 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3893 ,ReturnProbe); \
3894 \
3895 JNI_ENTRY(void, \
3896 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3897 jsize len, const ElementType *buf)) \
3898 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3899 EntryProbe; \
3900 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3901 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3902 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3903 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3904 } else { \
3905 if (len > 0) { \
3906 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3907 memcpy((u_char*) dst->Tag##_at_addr(start), \
3908 (u_char*) buf, \
3909 len << sc); \
3910 } \
3911 } \
3912 JNI_END
3914 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3915 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3916 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3917 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3918 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3919 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3920 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3921 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3922 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3923 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3924 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3925 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3926 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3927 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3928 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3929 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3930 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3931 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3932 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3933 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3934 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3935 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3936 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3937 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3938 #endif /* USDT2 */
3941 //
3942 // Interception of natives
3943 //
3945 // The RegisterNatives call being attempted tried to register with a method that
3946 // is not native. Ask JVM TI what prefixes have been specified. Then check
3947 // to see if the native method is now wrapped with the prefixes. See the
3948 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3949 static Method* find_prefixed_native(KlassHandle k,
3950 Symbol* name, Symbol* signature, TRAPS) {
3951 #if INCLUDE_JVMTI
3952 ResourceMark rm(THREAD);
3953 Method* method;
3954 int name_len = name->utf8_length();
3955 char* name_str = name->as_utf8();
3956 int prefix_count;
3957 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3958 for (int i = 0; i < prefix_count; i++) {
3959 char* prefix = prefixes[i];
3960 int prefix_len = (int)strlen(prefix);
3962 // try adding this prefix to the method name and see if it matches another method name
3963 int trial_len = name_len + prefix_len;
3964 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3965 strcpy(trial_name_str, prefix);
3966 strcat(trial_name_str, name_str);
3967 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3968 if (trial_name == NULL) {
3969 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3970 }
3971 method = k()->lookup_method(trial_name, signature);
3972 if (method == NULL) {
3973 continue; // signature doesn't match, try the next prefix
3974 }
3975 if (method->is_native()) {
3976 method->set_is_prefixed_native();
3977 return method; // wahoo, we found a prefixed version of the method, return it
3978 }
3979 // found as non-native, so prefix is good, add it, probably just need more prefixes
3980 name_len = trial_len;
3981 name_str = trial_name_str;
3982 }
3983 #endif // INCLUDE_JVMTI
3984 return NULL; // not found
3985 }
3987 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3988 Method* method = k()->lookup_method(name, signature);
3989 if (method == NULL) {
3990 ResourceMark rm;
3991 stringStream st;
3992 st.print("Method %s name or signature does not match",
3993 Method::name_and_sig_as_C_string(k(), name, signature));
3994 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3995 }
3996 if (!method->is_native()) {
3997 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3998 method = find_prefixed_native(k, name, signature, THREAD);
3999 if (method == NULL) {
4000 ResourceMark rm;
4001 stringStream st;
4002 st.print("Method %s is not declared as native",
4003 Method::name_and_sig_as_C_string(k(), name, signature));
4004 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4005 }
4006 }
4008 if (entry != NULL) {
4009 method->set_native_function(entry,
4010 Method::native_bind_event_is_interesting);
4011 } else {
4012 method->clear_native_function();
4013 }
4014 if (PrintJNIResolving) {
4015 ResourceMark rm(THREAD);
4016 tty->print_cr("[Registering JNI native method %s.%s]",
4017 method->method_holder()->external_name(),
4018 method->name()->as_C_string());
4019 }
4020 return true;
4021 }
4023 #ifndef USDT2
4024 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4025 #else /* USDT2 */
4026 DT_RETURN_MARK_DECL(RegisterNatives, jint
4027 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4028 #endif /* USDT2 */
4030 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4031 const JNINativeMethod *methods,
4032 jint nMethods))
4033 JNIWrapper("RegisterNatives");
4034 #ifndef USDT2
4035 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4036 #else /* USDT2 */
4037 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4038 env, clazz, (void *) methods, nMethods);
4039 #endif /* USDT2 */
4040 jint ret = 0;
4041 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4043 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4045 for (int index = 0; index < nMethods; index++) {
4046 const char* meth_name = methods[index].name;
4047 const char* meth_sig = methods[index].signature;
4048 int meth_name_len = (int)strlen(meth_name);
4050 // The class should have been loaded (we have an instance of the class
4051 // passed in) so the method and signature should already be in the symbol
4052 // table. If they're not there, the method doesn't exist.
4053 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4054 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4056 if (name == NULL || signature == NULL) {
4057 ResourceMark rm;
4058 stringStream st;
4059 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4060 // Must return negative value on failure
4061 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4062 }
4064 bool res = register_native(h_k, name, signature,
4065 (address) methods[index].fnPtr, THREAD);
4066 if (!res) {
4067 ret = -1;
4068 break;
4069 }
4070 }
4071 return ret;
4072 JNI_END
4075 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4076 JNIWrapper("UnregisterNatives");
4077 #ifndef USDT2
4078 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4079 #else /* USDT2 */
4080 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4081 env, clazz);
4082 #endif /* USDT2 */
4083 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4084 //%note jni_2
4085 if (k->oop_is_instance()) {
4086 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4087 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4088 if (m->is_native()) {
4089 m->clear_native_function();
4090 m->set_signature_handler(NULL);
4091 }
4092 }
4093 }
4094 #ifndef USDT2
4095 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4096 #else /* USDT2 */
4097 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4098 0);
4099 #endif /* USDT2 */
4100 return 0;
4101 JNI_END
4103 //
4104 // Monitor functions
4105 //
4107 #ifndef USDT2
4108 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4109 #else /* USDT2 */
4110 DT_RETURN_MARK_DECL(MonitorEnter, jint
4111 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4112 #endif /* USDT2 */
4114 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4115 #ifndef USDT2
4116 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4117 #else /* USDT2 */
4118 HOTSPOT_JNI_MONITORENTER_ENTRY(
4119 env, jobj);
4120 #endif /* USDT2 */
4121 jint ret = JNI_ERR;
4122 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4124 // If the object is null, we can't do anything with it
4125 if (jobj == NULL) {
4126 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4127 }
4129 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4130 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4131 ret = JNI_OK;
4132 return ret;
4133 JNI_END
4135 #ifndef USDT2
4136 DT_RETURN_MARK_DECL(MonitorExit, jint);
4137 #else /* USDT2 */
4138 DT_RETURN_MARK_DECL(MonitorExit, jint
4139 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4140 #endif /* USDT2 */
4142 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4143 #ifndef USDT2
4144 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4145 #else /* USDT2 */
4146 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4147 env, jobj);
4148 #endif /* USDT2 */
4149 jint ret = JNI_ERR;
4150 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4152 // Don't do anything with a null object
4153 if (jobj == NULL) {
4154 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4155 }
4157 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4158 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4160 ret = JNI_OK;
4161 return ret;
4162 JNI_END
4164 //
4165 // Extensions
4166 //
4168 #ifndef USDT2
4169 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4170 #else /* USDT2 */
4171 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4172 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4173 #endif /* USDT2 */
4175 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4176 JNIWrapper("GetStringRegion");
4177 #ifndef USDT2
4178 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4179 #else /* USDT2 */
4180 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4181 env, string, start, len, buf);
4182 #endif /* USDT2 */
4183 DT_VOID_RETURN_MARK(GetStringRegion);
4184 oop s = JNIHandles::resolve_non_null(string);
4185 int s_len = java_lang_String::length(s);
4186 if (start < 0 || len < 0 || start + len > s_len) {
4187 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4188 } else {
4189 if (len > 0) {
4190 int s_offset = java_lang_String::offset(s);
4191 typeArrayOop s_value = java_lang_String::value(s);
4192 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4193 }
4194 }
4195 JNI_END
4197 #ifndef USDT2
4198 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4199 #else /* USDT2 */
4200 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4201 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4202 #endif /* USDT2 */
4204 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4205 JNIWrapper("GetStringUTFRegion");
4206 #ifndef USDT2
4207 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4208 #else /* USDT2 */
4209 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4210 env, string, start, len, buf);
4211 #endif /* USDT2 */
4212 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4213 oop s = JNIHandles::resolve_non_null(string);
4214 int s_len = java_lang_String::length(s);
4215 if (start < 0 || len < 0 || start + len > s_len) {
4216 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4217 } else {
4218 //%note jni_7
4219 if (len > 0) {
4220 ResourceMark rm(THREAD);
4221 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4222 int utf_len = (int)strlen(utf_region);
4223 memcpy(buf, utf_region, utf_len);
4224 buf[utf_len] = 0;
4225 } else {
4226 // JDK null-terminates the buffer even in len is zero
4227 if (buf != NULL) {
4228 buf[0] = 0;
4229 }
4230 }
4231 }
4232 JNI_END
4235 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4236 JNIWrapper("GetPrimitiveArrayCritical");
4237 #ifndef USDT2
4238 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4239 #else /* USDT2 */
4240 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4241 env, array, (uintptr_t *) isCopy);
4242 #endif /* USDT2 */
4243 GC_locker::lock_critical(thread);
4244 if (isCopy != NULL) {
4245 *isCopy = JNI_FALSE;
4246 }
4247 oop a = JNIHandles::resolve_non_null(array);
4248 assert(a->is_array(), "just checking");
4249 BasicType type;
4250 if (a->is_objArray()) {
4251 type = T_OBJECT;
4252 } else {
4253 type = TypeArrayKlass::cast(a->klass())->element_type();
4254 }
4255 void* ret = arrayOop(a)->base(type);
4256 #ifndef USDT2
4257 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4258 #else /* USDT2 */
4259 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4260 ret);
4261 #endif /* USDT2 */
4262 return ret;
4263 JNI_END
4266 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4267 JNIWrapper("ReleasePrimitiveArrayCritical");
4268 #ifndef USDT2
4269 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4270 #else /* USDT2 */
4271 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4272 env, array, carray, mode);
4273 #endif /* USDT2 */
4274 // The array, carray and mode arguments are ignored
4275 GC_locker::unlock_critical(thread);
4276 #ifndef USDT2
4277 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4278 #else /* USDT2 */
4279 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4280 );
4281 #endif /* USDT2 */
4282 JNI_END
4285 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4286 JNIWrapper("GetStringCritical");
4287 #ifndef USDT2
4288 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4289 #else /* USDT2 */
4290 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4291 env, string, (uintptr_t *) isCopy);
4292 #endif /* USDT2 */
4293 GC_locker::lock_critical(thread);
4294 if (isCopy != NULL) {
4295 *isCopy = JNI_FALSE;
4296 }
4297 oop s = JNIHandles::resolve_non_null(string);
4298 int s_len = java_lang_String::length(s);
4299 typeArrayOop s_value = java_lang_String::value(s);
4300 int s_offset = java_lang_String::offset(s);
4301 const jchar* ret;
4302 if (s_len > 0) {
4303 ret = s_value->char_at_addr(s_offset);
4304 } else {
4305 ret = (jchar*) s_value->base(T_CHAR);
4306 }
4307 #ifndef USDT2
4308 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4309 #else /* USDT2 */
4310 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4311 (uint16_t *) ret);
4312 #endif /* USDT2 */
4313 return ret;
4314 JNI_END
4317 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4318 JNIWrapper("ReleaseStringCritical");
4319 #ifndef USDT2
4320 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4321 #else /* USDT2 */
4322 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4323 env, str, (uint16_t *) chars);
4324 #endif /* USDT2 */
4325 // The str and chars arguments are ignored
4326 GC_locker::unlock_critical(thread);
4327 #ifndef USDT2
4328 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4329 #else /* USDT2 */
4330 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4331 );
4332 #endif /* USDT2 */
4333 JNI_END
4336 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4337 JNIWrapper("jni_NewWeakGlobalRef");
4338 #ifndef USDT2
4339 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4340 #else /* USDT2 */
4341 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4342 env, ref);
4343 #endif /* USDT2 */
4344 Handle ref_handle(thread, JNIHandles::resolve(ref));
4345 jweak ret = JNIHandles::make_weak_global(ref_handle);
4346 #ifndef USDT2
4347 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4348 #else /* USDT2 */
4349 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4350 ret);
4351 #endif /* USDT2 */
4352 return ret;
4353 JNI_END
4355 // Must be JNI_ENTRY (with HandleMark)
4356 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4357 JNIWrapper("jni_DeleteWeakGlobalRef");
4358 #ifndef USDT2
4359 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4360 #else /* USDT2 */
4361 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4362 env, ref);
4363 #endif /* USDT2 */
4364 JNIHandles::destroy_weak_global(ref);
4365 #ifndef USDT2
4366 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4367 #else /* USDT2 */
4368 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4369 );
4370 #endif /* USDT2 */
4371 JNI_END
4374 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4375 JNIWrapper("jni_ExceptionCheck");
4376 #ifndef USDT2
4377 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4378 #else /* USDT2 */
4379 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4380 env);
4381 #endif /* USDT2 */
4382 jni_check_async_exceptions(thread);
4383 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4384 #ifndef USDT2
4385 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4386 #else /* USDT2 */
4387 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4388 ret);
4389 #endif /* USDT2 */
4390 return ret;
4391 JNI_END
4394 // Initialization state for three routines below relating to
4395 // java.nio.DirectBuffers
4396 static jint directBufferSupportInitializeStarted = 0;
4397 static volatile jint directBufferSupportInitializeEnded = 0;
4398 static volatile jint directBufferSupportInitializeFailed = 0;
4399 static jclass bufferClass = NULL;
4400 static jclass directBufferClass = NULL;
4401 static jclass directByteBufferClass = NULL;
4402 static jmethodID directByteBufferConstructor = NULL;
4403 static jfieldID directBufferAddressField = NULL;
4404 static jfieldID bufferCapacityField = NULL;
4406 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4407 Handle loader; // null (bootstrap) loader
4408 Handle protection_domain; // null protection domain
4410 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4411 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4413 if (TraceClassResolution && result != NULL) {
4414 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4415 }
4416 return result;
4417 }
4419 // These lookups are done with the NULL (bootstrap) ClassLoader to
4420 // circumvent any security checks that would be done by jni_FindClass.
4421 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4422 {
4423 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4424 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4425 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4426 return true;
4427 }
4428 JNI_END
4431 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4432 if (directBufferSupportInitializeFailed) {
4433 return false;
4434 }
4436 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4437 if (!lookupDirectBufferClasses(env)) {
4438 directBufferSupportInitializeFailed = 1;
4439 return false;
4440 }
4442 // Make global references for these
4443 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4444 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4445 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4447 // Get needed field and method IDs
4448 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4449 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4450 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4452 if ((directByteBufferConstructor == NULL) ||
4453 (directBufferAddressField == NULL) ||
4454 (bufferCapacityField == NULL)) {
4455 directBufferSupportInitializeFailed = 1;
4456 return false;
4457 }
4459 directBufferSupportInitializeEnded = 1;
4460 } else {
4461 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4462 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4463 // os::sleep which requires the VM state transition. On other platforms, it
4464 // is not necessary. The following call to change the VM state is purposely
4465 // put inside the loop to avoid potential deadlock when multiple threads
4466 // try to call this method. See 6791815 for more details.
4467 ThreadInVMfromNative tivn(thread);
4468 os::yield_all();
4469 }
4470 }
4472 return !directBufferSupportInitializeFailed;
4473 }
4475 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4476 {
4477 // thread_from_jni_environment() will block if VM is gone.
4478 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4480 JNIWrapper("jni_NewDirectByteBuffer");
4481 #ifndef USDT2
4482 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4483 #else /* USDT2 */
4484 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4485 env, address, capacity);
4486 #endif /* USDT2 */
4488 if (!directBufferSupportInitializeEnded) {
4489 if (!initializeDirectBufferSupport(env, thread)) {
4490 #ifndef USDT2
4491 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4492 #else /* USDT2 */
4493 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4494 NULL);
4495 #endif /* USDT2 */
4496 return NULL;
4497 }
4498 }
4500 // Being paranoid about accidental sign extension on address
4501 jlong addr = (jlong) ((uintptr_t) address);
4502 // NOTE that package-private DirectByteBuffer constructor currently
4503 // takes int capacity
4504 jint cap = (jint) capacity;
4505 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4506 #ifndef USDT2
4507 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4508 #else /* USDT2 */
4509 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4510 ret);
4511 #endif /* USDT2 */
4512 return ret;
4513 }
4515 #ifndef USDT2
4516 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4517 #else /* USDT2 */
4518 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4519 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4520 #endif /* USDT2 */
4522 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4523 {
4524 // thread_from_jni_environment() will block if VM is gone.
4525 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4527 JNIWrapper("jni_GetDirectBufferAddress");
4528 #ifndef USDT2
4529 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4530 #else /* USDT2 */
4531 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4532 env, buf);
4533 #endif /* USDT2 */
4534 void* ret = NULL;
4535 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4537 if (!directBufferSupportInitializeEnded) {
4538 if (!initializeDirectBufferSupport(env, thread)) {
4539 return 0;
4540 }
4541 }
4543 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4544 return 0;
4545 }
4547 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4548 return ret;
4549 }
4551 #ifndef USDT2
4552 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4553 #else /* USDT2 */
4554 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4555 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4556 #endif /* USDT2 */
4558 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4559 {
4560 // thread_from_jni_environment() will block if VM is gone.
4561 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4563 JNIWrapper("jni_GetDirectBufferCapacity");
4564 #ifndef USDT2
4565 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4566 #else /* USDT2 */
4567 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4568 env, buf);
4569 #endif /* USDT2 */
4570 jlong ret = -1;
4571 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4573 if (!directBufferSupportInitializeEnded) {
4574 if (!initializeDirectBufferSupport(env, thread)) {
4575 ret = 0;
4576 return ret;
4577 }
4578 }
4580 if (buf == NULL) {
4581 return -1;
4582 }
4584 if (!env->IsInstanceOf(buf, directBufferClass)) {
4585 return -1;
4586 }
4588 // NOTE that capacity is currently an int in the implementation
4589 ret = env->GetIntField(buf, bufferCapacityField);
4590 return ret;
4591 }
4594 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4595 JNIWrapper("GetVersion");
4596 #ifndef USDT2
4597 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4598 #else /* USDT2 */
4599 HOTSPOT_JNI_GETVERSION_ENTRY(
4600 env);
4601 #endif /* USDT2 */
4602 #ifndef USDT2
4603 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4604 #else /* USDT2 */
4605 HOTSPOT_JNI_GETVERSION_RETURN(
4606 CurrentVersion);
4607 #endif /* USDT2 */
4608 return CurrentVersion;
4609 JNI_END
4611 extern struct JavaVM_ main_vm;
4613 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4614 JNIWrapper("jni_GetJavaVM");
4615 #ifndef USDT2
4616 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4617 #else /* USDT2 */
4618 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4619 env, (void **) vm);
4620 #endif /* USDT2 */
4621 *vm = (JavaVM *)(&main_vm);
4622 #ifndef USDT2
4623 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4624 #else /* USDT2 */
4625 HOTSPOT_JNI_GETJAVAVM_RETURN(
4626 JNI_OK);
4627 #endif /* USDT2 */
4628 return JNI_OK;
4629 JNI_END
4631 // Structure containing all jni functions
4632 struct JNINativeInterface_ jni_NativeInterface = {
4633 NULL,
4634 NULL,
4635 NULL,
4637 NULL,
4639 jni_GetVersion,
4641 jni_DefineClass,
4642 jni_FindClass,
4644 jni_FromReflectedMethod,
4645 jni_FromReflectedField,
4647 jni_ToReflectedMethod,
4649 jni_GetSuperclass,
4650 jni_IsAssignableFrom,
4652 jni_ToReflectedField,
4654 jni_Throw,
4655 jni_ThrowNew,
4656 jni_ExceptionOccurred,
4657 jni_ExceptionDescribe,
4658 jni_ExceptionClear,
4659 jni_FatalError,
4661 jni_PushLocalFrame,
4662 jni_PopLocalFrame,
4664 jni_NewGlobalRef,
4665 jni_DeleteGlobalRef,
4666 jni_DeleteLocalRef,
4667 jni_IsSameObject,
4669 jni_NewLocalRef,
4670 jni_EnsureLocalCapacity,
4672 jni_AllocObject,
4673 jni_NewObject,
4674 jni_NewObjectV,
4675 jni_NewObjectA,
4677 jni_GetObjectClass,
4678 jni_IsInstanceOf,
4680 jni_GetMethodID,
4682 jni_CallObjectMethod,
4683 jni_CallObjectMethodV,
4684 jni_CallObjectMethodA,
4685 jni_CallBooleanMethod,
4686 jni_CallBooleanMethodV,
4687 jni_CallBooleanMethodA,
4688 jni_CallByteMethod,
4689 jni_CallByteMethodV,
4690 jni_CallByteMethodA,
4691 jni_CallCharMethod,
4692 jni_CallCharMethodV,
4693 jni_CallCharMethodA,
4694 jni_CallShortMethod,
4695 jni_CallShortMethodV,
4696 jni_CallShortMethodA,
4697 jni_CallIntMethod,
4698 jni_CallIntMethodV,
4699 jni_CallIntMethodA,
4700 jni_CallLongMethod,
4701 jni_CallLongMethodV,
4702 jni_CallLongMethodA,
4703 jni_CallFloatMethod,
4704 jni_CallFloatMethodV,
4705 jni_CallFloatMethodA,
4706 jni_CallDoubleMethod,
4707 jni_CallDoubleMethodV,
4708 jni_CallDoubleMethodA,
4709 jni_CallVoidMethod,
4710 jni_CallVoidMethodV,
4711 jni_CallVoidMethodA,
4713 jni_CallNonvirtualObjectMethod,
4714 jni_CallNonvirtualObjectMethodV,
4715 jni_CallNonvirtualObjectMethodA,
4716 jni_CallNonvirtualBooleanMethod,
4717 jni_CallNonvirtualBooleanMethodV,
4718 jni_CallNonvirtualBooleanMethodA,
4719 jni_CallNonvirtualByteMethod,
4720 jni_CallNonvirtualByteMethodV,
4721 jni_CallNonvirtualByteMethodA,
4722 jni_CallNonvirtualCharMethod,
4723 jni_CallNonvirtualCharMethodV,
4724 jni_CallNonvirtualCharMethodA,
4725 jni_CallNonvirtualShortMethod,
4726 jni_CallNonvirtualShortMethodV,
4727 jni_CallNonvirtualShortMethodA,
4728 jni_CallNonvirtualIntMethod,
4729 jni_CallNonvirtualIntMethodV,
4730 jni_CallNonvirtualIntMethodA,
4731 jni_CallNonvirtualLongMethod,
4732 jni_CallNonvirtualLongMethodV,
4733 jni_CallNonvirtualLongMethodA,
4734 jni_CallNonvirtualFloatMethod,
4735 jni_CallNonvirtualFloatMethodV,
4736 jni_CallNonvirtualFloatMethodA,
4737 jni_CallNonvirtualDoubleMethod,
4738 jni_CallNonvirtualDoubleMethodV,
4739 jni_CallNonvirtualDoubleMethodA,
4740 jni_CallNonvirtualVoidMethod,
4741 jni_CallNonvirtualVoidMethodV,
4742 jni_CallNonvirtualVoidMethodA,
4744 jni_GetFieldID,
4746 jni_GetObjectField,
4747 jni_GetBooleanField,
4748 jni_GetByteField,
4749 jni_GetCharField,
4750 jni_GetShortField,
4751 jni_GetIntField,
4752 jni_GetLongField,
4753 jni_GetFloatField,
4754 jni_GetDoubleField,
4756 jni_SetObjectField,
4757 jni_SetBooleanField,
4758 jni_SetByteField,
4759 jni_SetCharField,
4760 jni_SetShortField,
4761 jni_SetIntField,
4762 jni_SetLongField,
4763 jni_SetFloatField,
4764 jni_SetDoubleField,
4766 jni_GetStaticMethodID,
4768 jni_CallStaticObjectMethod,
4769 jni_CallStaticObjectMethodV,
4770 jni_CallStaticObjectMethodA,
4771 jni_CallStaticBooleanMethod,
4772 jni_CallStaticBooleanMethodV,
4773 jni_CallStaticBooleanMethodA,
4774 jni_CallStaticByteMethod,
4775 jni_CallStaticByteMethodV,
4776 jni_CallStaticByteMethodA,
4777 jni_CallStaticCharMethod,
4778 jni_CallStaticCharMethodV,
4779 jni_CallStaticCharMethodA,
4780 jni_CallStaticShortMethod,
4781 jni_CallStaticShortMethodV,
4782 jni_CallStaticShortMethodA,
4783 jni_CallStaticIntMethod,
4784 jni_CallStaticIntMethodV,
4785 jni_CallStaticIntMethodA,
4786 jni_CallStaticLongMethod,
4787 jni_CallStaticLongMethodV,
4788 jni_CallStaticLongMethodA,
4789 jni_CallStaticFloatMethod,
4790 jni_CallStaticFloatMethodV,
4791 jni_CallStaticFloatMethodA,
4792 jni_CallStaticDoubleMethod,
4793 jni_CallStaticDoubleMethodV,
4794 jni_CallStaticDoubleMethodA,
4795 jni_CallStaticVoidMethod,
4796 jni_CallStaticVoidMethodV,
4797 jni_CallStaticVoidMethodA,
4799 jni_GetStaticFieldID,
4801 jni_GetStaticObjectField,
4802 jni_GetStaticBooleanField,
4803 jni_GetStaticByteField,
4804 jni_GetStaticCharField,
4805 jni_GetStaticShortField,
4806 jni_GetStaticIntField,
4807 jni_GetStaticLongField,
4808 jni_GetStaticFloatField,
4809 jni_GetStaticDoubleField,
4811 jni_SetStaticObjectField,
4812 jni_SetStaticBooleanField,
4813 jni_SetStaticByteField,
4814 jni_SetStaticCharField,
4815 jni_SetStaticShortField,
4816 jni_SetStaticIntField,
4817 jni_SetStaticLongField,
4818 jni_SetStaticFloatField,
4819 jni_SetStaticDoubleField,
4821 jni_NewString,
4822 jni_GetStringLength,
4823 jni_GetStringChars,
4824 jni_ReleaseStringChars,
4826 jni_NewStringUTF,
4827 jni_GetStringUTFLength,
4828 jni_GetStringUTFChars,
4829 jni_ReleaseStringUTFChars,
4831 jni_GetArrayLength,
4833 jni_NewObjectArray,
4834 jni_GetObjectArrayElement,
4835 jni_SetObjectArrayElement,
4837 jni_NewBooleanArray,
4838 jni_NewByteArray,
4839 jni_NewCharArray,
4840 jni_NewShortArray,
4841 jni_NewIntArray,
4842 jni_NewLongArray,
4843 jni_NewFloatArray,
4844 jni_NewDoubleArray,
4846 jni_GetBooleanArrayElements,
4847 jni_GetByteArrayElements,
4848 jni_GetCharArrayElements,
4849 jni_GetShortArrayElements,
4850 jni_GetIntArrayElements,
4851 jni_GetLongArrayElements,
4852 jni_GetFloatArrayElements,
4853 jni_GetDoubleArrayElements,
4855 jni_ReleaseBooleanArrayElements,
4856 jni_ReleaseByteArrayElements,
4857 jni_ReleaseCharArrayElements,
4858 jni_ReleaseShortArrayElements,
4859 jni_ReleaseIntArrayElements,
4860 jni_ReleaseLongArrayElements,
4861 jni_ReleaseFloatArrayElements,
4862 jni_ReleaseDoubleArrayElements,
4864 jni_GetBooleanArrayRegion,
4865 jni_GetByteArrayRegion,
4866 jni_GetCharArrayRegion,
4867 jni_GetShortArrayRegion,
4868 jni_GetIntArrayRegion,
4869 jni_GetLongArrayRegion,
4870 jni_GetFloatArrayRegion,
4871 jni_GetDoubleArrayRegion,
4873 jni_SetBooleanArrayRegion,
4874 jni_SetByteArrayRegion,
4875 jni_SetCharArrayRegion,
4876 jni_SetShortArrayRegion,
4877 jni_SetIntArrayRegion,
4878 jni_SetLongArrayRegion,
4879 jni_SetFloatArrayRegion,
4880 jni_SetDoubleArrayRegion,
4882 jni_RegisterNatives,
4883 jni_UnregisterNatives,
4885 jni_MonitorEnter,
4886 jni_MonitorExit,
4888 jni_GetJavaVM,
4890 jni_GetStringRegion,
4891 jni_GetStringUTFRegion,
4893 jni_GetPrimitiveArrayCritical,
4894 jni_ReleasePrimitiveArrayCritical,
4896 jni_GetStringCritical,
4897 jni_ReleaseStringCritical,
4899 jni_NewWeakGlobalRef,
4900 jni_DeleteWeakGlobalRef,
4902 jni_ExceptionCheck,
4904 jni_NewDirectByteBuffer,
4905 jni_GetDirectBufferAddress,
4906 jni_GetDirectBufferCapacity,
4908 // New 1_6 features
4910 jni_GetObjectRefType
4911 };
4914 // For jvmti use to modify jni function table.
4915 // Java threads in native contiues to run until it is transitioned
4916 // to VM at safepoint. Before the transition or before it is blocked
4917 // for safepoint it may access jni function table. VM could crash if
4918 // any java thread access the jni function table in the middle of memcpy.
4919 // To avoid this each function pointers are copied automically.
4920 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4921 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4922 intptr_t *a = (intptr_t *) jni_functions();
4923 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4924 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4925 Atomic::store_ptr(*b++, a++);
4926 }
4927 }
4929 void quicken_jni_functions() {
4930 // Replace Get<Primitive>Field with fast versions
4931 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4932 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4933 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4934 // windows x86 currently needs SEH wrapper and the gain of the fast
4935 // versions currently isn't certain for server vm on uniprocessor.
4936 && os::is_MP()
4937 #endif
4938 ) {
4939 address func;
4940 func = JNI_FastGetField::generate_fast_get_boolean_field();
4941 if (func != (address)-1) {
4942 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4943 }
4944 func = JNI_FastGetField::generate_fast_get_byte_field();
4945 if (func != (address)-1) {
4946 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4947 }
4948 func = JNI_FastGetField::generate_fast_get_char_field();
4949 if (func != (address)-1) {
4950 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4951 }
4952 func = JNI_FastGetField::generate_fast_get_short_field();
4953 if (func != (address)-1) {
4954 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4955 }
4956 func = JNI_FastGetField::generate_fast_get_int_field();
4957 if (func != (address)-1) {
4958 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4959 }
4960 func = JNI_FastGetField::generate_fast_get_long_field();
4961 if (func != (address)-1) {
4962 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4963 }
4964 func = JNI_FastGetField::generate_fast_get_float_field();
4965 if (func != (address)-1) {
4966 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4967 }
4968 func = JNI_FastGetField::generate_fast_get_double_field();
4969 if (func != (address)-1) {
4970 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4971 }
4972 }
4973 }
4975 // Returns the function structure
4976 struct JNINativeInterface_* jni_functions() {
4977 #if INCLUDE_JNI_CHECK
4978 if (CheckJNICalls) return jni_functions_check();
4979 #endif // INCLUDE_JNI_CHECK
4980 return &jni_NativeInterface;
4981 }
4983 // Returns the function structure
4984 struct JNINativeInterface_* jni_functions_nocheck() {
4985 return &jni_NativeInterface;
4986 }
4989 // Invocation API
4992 // Forward declaration
4993 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4995 // Global invocation API vars
4996 volatile jint vm_created = 0;
4997 // Indicate whether it is safe to recreate VM
4998 volatile jint safe_to_recreate_vm = 1;
4999 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5002 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5003 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5005 #ifndef USDT2
5006 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5007 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5008 #else /* USDT2 */
5009 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5010 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5011 #endif /* USDT2 */
5013 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5014 #ifndef USDT2
5015 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5016 #else /* USDT2 */
5017 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5018 args_);
5019 #endif /* USDT2 */
5020 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5021 jint ret = JNI_ERR;
5022 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5024 if (Threads::is_supported_jni_version(args->version)) {
5025 ret = JNI_OK;
5026 }
5027 // 1.1 style no longer supported in hotspot.
5028 // According the JNI spec, we should update args->version on return.
5029 // We also use the structure to communicate with launcher about default
5030 // stack size.
5031 if (args->version == JNI_VERSION_1_1) {
5032 args->version = JNI_VERSION_1_2;
5033 // javaStackSize is int in arguments structure
5034 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5035 args->javaStackSize = (jint)(ThreadStackSize * K);
5036 }
5037 return ret;
5038 }
5040 #ifndef PRODUCT
5042 #include "gc_implementation/shared/gcTimer.hpp"
5043 #include "gc_interface/collectedHeap.hpp"
5044 #if INCLUDE_ALL_GCS
5045 #include "gc_implementation/g1/heapRegionRemSet.hpp"
5046 #endif
5047 #include "utilities/quickSort.hpp"
5048 #include "utilities/ostream.hpp"
5049 #if INCLUDE_VM_STRUCTS
5050 #include "runtime/vmStructs.hpp"
5051 #endif
5053 #define run_unit_test(unit_test_function_call) \
5054 tty->print_cr("Running test: " #unit_test_function_call); \
5055 unit_test_function_call
5057 // Forward declaration
5058 void TestReservedSpace_test();
5059 void TestReserveMemorySpecial_test();
5060 void TestVirtualSpace_test();
5061 void TestMetaspaceAux_test();
5062 void TestMetachunk_test();
5063 void TestVirtualSpaceNode_test();
5064 #if INCLUDE_ALL_GCS
5065 void TestG1BiasedArray_test();
5066 #endif
5068 void execute_internal_vm_tests() {
5069 if (ExecuteInternalVMTests) {
5070 tty->print_cr("Running internal VM tests");
5071 run_unit_test(TestReservedSpace_test());
5072 run_unit_test(TestReserveMemorySpecial_test());
5073 run_unit_test(TestVirtualSpace_test());
5074 run_unit_test(TestMetaspaceAux_test());
5075 run_unit_test(TestMetachunk_test());
5076 run_unit_test(TestVirtualSpaceNode_test());
5077 run_unit_test(GlobalDefinitions::test_globals());
5078 run_unit_test(GCTimerAllTest::all());
5079 run_unit_test(arrayOopDesc::test_max_array_length());
5080 run_unit_test(CollectedHeap::test_is_in());
5081 run_unit_test(QuickSort::test_quick_sort());
5082 run_unit_test(AltHashing::test_alt_hash());
5083 run_unit_test(test_loggc_filename());
5084 #if INCLUDE_VM_STRUCTS
5085 run_unit_test(VMStructs::test());
5086 #endif
5087 #if INCLUDE_ALL_GCS
5088 run_unit_test(TestG1BiasedArray_test());
5089 run_unit_test(HeapRegionRemSet::test_prt());
5090 #endif
5091 tty->print_cr("All internal VM tests passed");
5092 }
5093 }
5095 #undef run_unit_test
5097 #endif
5099 #ifndef USDT2
5100 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5101 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5102 #else /* USDT2 */
5103 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5104 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5105 #endif /* USDT2 */
5107 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5108 #ifndef USDT2
5109 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5110 #else /* USDT2 */
5111 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5112 (void **) vm, penv, args);
5113 #endif /* USDT2 */
5115 jint result = JNI_ERR;
5116 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5118 // We're about to use Atomic::xchg for synchronization. Some Zero
5119 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5120 // but __sync_lock_test_and_set is not guaranteed to do what we want
5121 // on all architectures. So we check it works before relying on it.
5122 #if defined(ZERO) && defined(ASSERT)
5123 {
5124 jint a = 0xcafebabe;
5125 jint b = Atomic::xchg(0xdeadbeef, &a);
5126 void *c = &a;
5127 void *d = Atomic::xchg_ptr(&b, &c);
5128 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5129 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5130 }
5131 #endif // ZERO && ASSERT
5133 // At the moment it's only possible to have one Java VM,
5134 // since some of the runtime state is in global variables.
5136 // We cannot use our mutex locks here, since they only work on
5137 // Threads. We do an atomic compare and exchange to ensure only
5138 // one thread can call this method at a time
5140 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5141 // the add/dec implementations are dependent on whether we are running
5142 // on a multiprocessor, and at this stage of initialization the os::is_MP
5143 // function used to determine this will always return false. Atomic::xchg
5144 // does not have this problem.
5145 if (Atomic::xchg(1, &vm_created) == 1) {
5146 return JNI_EEXIST; // already created, or create attempt in progress
5147 }
5148 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5149 return JNI_ERR; // someone tried and failed and retry not allowed.
5150 }
5152 assert(vm_created == 1, "vm_created is true during the creation");
5154 /**
5155 * Certain errors during initialization are recoverable and do not
5156 * prevent this method from being called again at a later time
5157 * (perhaps with different arguments). However, at a certain
5158 * point during initialization if an error occurs we cannot allow
5159 * this function to be called again (or it will crash). In those
5160 * situations, the 'canTryAgain' flag is set to false, which atomically
5161 * sets safe_to_recreate_vm to 1, such that any new call to
5162 * JNI_CreateJavaVM will immediately fail using the above logic.
5163 */
5164 bool can_try_again = true;
5166 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5167 if (result == JNI_OK) {
5168 JavaThread *thread = JavaThread::current();
5169 /* thread is thread_in_vm here */
5170 *vm = (JavaVM *)(&main_vm);
5171 *(JNIEnv**)penv = thread->jni_environment();
5173 // Tracks the time application was running before GC
5174 RuntimeService::record_application_start();
5176 // Notify JVMTI
5177 if (JvmtiExport::should_post_thread_life()) {
5178 JvmtiExport::post_thread_start(thread);
5179 }
5181 EventThreadStart event;
5182 if (event.should_commit()) {
5183 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5184 event.commit();
5185 }
5187 #ifndef PRODUCT
5188 #ifndef TARGET_OS_FAMILY_windows
5189 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5190 #endif
5192 // Check if we should compile all classes on bootclasspath
5193 if (CompileTheWorld) ClassLoader::compile_the_world();
5194 if (ReplayCompiles) ciReplay::replay(thread);
5196 // Some platforms (like Win*) need a wrapper around these test
5197 // functions in order to properly handle error conditions.
5198 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5199 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5200 #endif
5202 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5203 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5204 } else {
5205 if (can_try_again) {
5206 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5207 safe_to_recreate_vm = 1;
5208 }
5210 // Creation failed. We must reset vm_created
5211 *vm = 0;
5212 *(JNIEnv**)penv = 0;
5213 // reset vm_created last to avoid race condition. Use OrderAccess to
5214 // control both compiler and architectural-based reordering.
5215 OrderAccess::release_store(&vm_created, 0);
5216 }
5218 return result;
5219 }
5221 #ifndef USDT2
5222 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5223 JavaVM**, jsize, jsize*);
5224 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5225 #endif /* !USDT2 */
5227 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5228 // See bug 4367188, the wrapper can sometimes cause VM crashes
5229 // JNIWrapper("GetCreatedJavaVMs");
5230 #ifndef USDT2
5231 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5232 vm_buf, bufLen, numVMs);
5233 #else /* USDT2 */
5234 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5235 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5236 #endif /* USDT2 */
5237 if (vm_created) {
5238 if (numVMs != NULL) *numVMs = 1;
5239 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5240 } else {
5241 if (numVMs != NULL) *numVMs = 0;
5242 }
5243 #ifndef USDT2
5244 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5245 #else /* USDT2 */
5246 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5247 JNI_OK);
5248 #endif /* USDT2 */
5249 return JNI_OK;
5250 }
5252 extern "C" {
5254 #ifndef USDT2
5255 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5256 #else /* USDT2 */
5257 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5258 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5259 #endif /* USDT2 */
5261 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5262 #ifndef USDT2
5263 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5264 #else /* USDT2 */
5265 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5266 vm);
5267 #endif /* USDT2 */
5268 jint res = JNI_ERR;
5269 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5271 if (!vm_created) {
5272 res = JNI_ERR;
5273 return res;
5274 }
5276 JNIWrapper("DestroyJavaVM");
5277 JNIEnv *env;
5278 JavaVMAttachArgs destroyargs;
5279 destroyargs.version = CurrentVersion;
5280 destroyargs.name = (char *)"DestroyJavaVM";
5281 destroyargs.group = NULL;
5282 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5283 if (res != JNI_OK) {
5284 return res;
5285 }
5287 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5288 JavaThread* thread = JavaThread::current();
5289 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5290 if (Threads::destroy_vm()) {
5291 // Should not change thread state, VM is gone
5292 vm_created = false;
5293 res = JNI_OK;
5294 return res;
5295 } else {
5296 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5297 res = JNI_ERR;
5298 return res;
5299 }
5300 }
5303 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5304 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5306 // Check below commented out from JDK1.2fcs as well
5307 /*
5308 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5309 return JNI_EVERSION;
5310 }
5311 */
5313 Thread* t = ThreadLocalStorage::get_thread_slow();
5314 if (t != NULL) {
5315 // If the thread has been attached this operation is a no-op
5316 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5317 return JNI_OK;
5318 }
5320 // Create a thread and mark it as attaching so it will be skipped by the
5321 // ThreadsListEnumerator - see CR 6404306
5322 JavaThread* thread = new JavaThread(true);
5324 // Set correct safepoint info. The thread is going to call into Java when
5325 // initializing the Java level thread object. Hence, the correct state must
5326 // be set in order for the Safepoint code to deal with it correctly.
5327 thread->set_thread_state(_thread_in_vm);
5328 // Must do this before initialize_thread_local_storage
5329 thread->record_stack_base_and_size();
5331 thread->initialize_thread_local_storage();
5333 if (!os::create_attached_thread(thread)) {
5334 delete thread;
5335 return JNI_ERR;
5336 }
5337 // Enable stack overflow checks
5338 thread->create_stack_guard_pages();
5340 thread->initialize_tlab();
5342 thread->cache_global_variables();
5344 // Crucial that we do not have a safepoint check for this thread, since it has
5345 // not been added to the Thread list yet.
5346 { Threads_lock->lock_without_safepoint_check();
5347 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5348 // avoid this thread trying to do a GC before it is added to the thread-list
5349 thread->set_active_handles(JNIHandleBlock::allocate_block());
5350 Threads::add(thread, daemon);
5351 Threads_lock->unlock();
5352 }
5353 // Create thread group and name info from attach arguments
5354 oop group = NULL;
5355 char* thread_name = NULL;
5356 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5357 group = JNIHandles::resolve(args->group);
5358 thread_name = args->name; // may be NULL
5359 }
5360 if (group == NULL) group = Universe::main_thread_group();
5362 // Create Java level thread object and attach it to this thread
5363 bool attach_failed = false;
5364 {
5365 EXCEPTION_MARK;
5366 HandleMark hm(THREAD);
5367 Handle thread_group(THREAD, group);
5368 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5369 if (HAS_PENDING_EXCEPTION) {
5370 CLEAR_PENDING_EXCEPTION;
5371 // cleanup outside the handle mark.
5372 attach_failed = true;
5373 }
5374 }
5376 if (attach_failed) {
5377 // Added missing cleanup
5378 thread->cleanup_failed_attach_current_thread();
5379 return JNI_ERR;
5380 }
5382 // mark the thread as no longer attaching
5383 // this uses a fence to push the change through so we don't have
5384 // to regrab the threads_lock
5385 thread->set_done_attaching_via_jni();
5387 // Set java thread status.
5388 java_lang_Thread::set_thread_status(thread->threadObj(),
5389 java_lang_Thread::RUNNABLE);
5391 // Notify the debugger
5392 if (JvmtiExport::should_post_thread_life()) {
5393 JvmtiExport::post_thread_start(thread);
5394 }
5396 EventThreadStart event;
5397 if (event.should_commit()) {
5398 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5399 event.commit();
5400 }
5402 *(JNIEnv**)penv = thread->jni_environment();
5404 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5405 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5406 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5407 // needed.
5409 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5411 // Perform any platform dependent FPU setup
5412 os::setup_fpu();
5414 return JNI_OK;
5415 }
5418 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5419 #ifndef USDT2
5420 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5421 #else /* USDT2 */
5422 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5423 vm, penv, _args);
5424 #endif /* USDT2 */
5425 if (!vm_created) {
5426 #ifndef USDT2
5427 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5428 #else /* USDT2 */
5429 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5430 (uint32_t) JNI_ERR);
5431 #endif /* USDT2 */
5432 return JNI_ERR;
5433 }
5435 JNIWrapper("AttachCurrentThread");
5436 jint ret = attach_current_thread(vm, penv, _args, false);
5437 #ifndef USDT2
5438 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5439 #else /* USDT2 */
5440 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5441 ret);
5442 #endif /* USDT2 */
5443 return ret;
5444 }
5447 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5448 #ifndef USDT2
5449 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5450 #else /* USDT2 */
5451 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5452 vm);
5453 #endif /* USDT2 */
5454 VM_Exit::block_if_vm_exited();
5456 JNIWrapper("DetachCurrentThread");
5458 // If the thread has been deattacted the operations is a no-op
5459 if (ThreadLocalStorage::thread() == NULL) {
5460 #ifndef USDT2
5461 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5462 #else /* USDT2 */
5463 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5464 JNI_OK);
5465 #endif /* USDT2 */
5466 return JNI_OK;
5467 }
5469 JavaThread* thread = JavaThread::current();
5470 if (thread->has_last_Java_frame()) {
5471 #ifndef USDT2
5472 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5473 #else /* USDT2 */
5474 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5475 (uint32_t) JNI_ERR);
5476 #endif /* USDT2 */
5477 // Can't detach a thread that's running java, that can't work.
5478 return JNI_ERR;
5479 }
5481 // Safepoint support. Have to do call-back to safepoint code, if in the
5482 // middel of a safepoint operation
5483 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5485 // XXX: Note that JavaThread::exit() call below removes the guards on the
5486 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5487 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5488 // of the guards is visible in jni_AttachCurrentThread above,
5489 // the removal of the guards is buried below in JavaThread::exit()
5490 // here. The abstraction should be more symmetrically either exposed
5491 // or hidden (e.g. it could probably be hidden in the same
5492 // (platform-dependent) methods where we do alternate stack
5493 // maintenance work?)
5494 thread->exit(false, JavaThread::jni_detach);
5495 delete thread;
5497 #ifndef USDT2
5498 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5499 #else /* USDT2 */
5500 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5501 JNI_OK);
5502 #endif /* USDT2 */
5503 return JNI_OK;
5504 }
5506 #ifndef USDT2
5507 DT_RETURN_MARK_DECL(GetEnv, jint);
5508 #else /* USDT2 */
5509 DT_RETURN_MARK_DECL(GetEnv, jint
5510 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5511 #endif /* USDT2 */
5513 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5514 #ifndef USDT2
5515 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5516 #else /* USDT2 */
5517 HOTSPOT_JNI_GETENV_ENTRY(
5518 vm, penv, version);
5519 #endif /* USDT2 */
5520 jint ret = JNI_ERR;
5521 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5523 if (!vm_created) {
5524 *penv = NULL;
5525 ret = JNI_EDETACHED;
5526 return ret;
5527 }
5529 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5530 return ret;
5531 }
5533 #ifndef JVMPI_VERSION_1
5534 // need these in order to be polite about older agents
5535 #define JVMPI_VERSION_1 ((jint)0x10000001)
5536 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5537 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5538 #endif // !JVMPI_VERSION_1
5540 Thread* thread = ThreadLocalStorage::thread();
5541 if (thread != NULL && thread->is_Java_thread()) {
5542 if (Threads::is_supported_jni_version_including_1_1(version)) {
5543 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5544 ret = JNI_OK;
5545 return ret;
5547 } else if (version == JVMPI_VERSION_1 ||
5548 version == JVMPI_VERSION_1_1 ||
5549 version == JVMPI_VERSION_1_2) {
5550 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5551 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5552 ret = JNI_EVERSION;
5553 return ret;
5554 } else if (JvmtiExport::is_jvmdi_version(version)) {
5555 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5556 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5557 ret = JNI_EVERSION;
5558 return ret;
5559 } else {
5560 *penv = NULL;
5561 ret = JNI_EVERSION;
5562 return ret;
5563 }
5564 } else {
5565 *penv = NULL;
5566 ret = JNI_EDETACHED;
5567 return ret;
5568 }
5569 }
5572 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5573 #ifndef USDT2
5574 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5575 #else /* USDT2 */
5576 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5577 vm, penv, _args);
5578 #endif /* USDT2 */
5579 if (!vm_created) {
5580 #ifndef USDT2
5581 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5582 #else /* USDT2 */
5583 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5584 (uint32_t) JNI_ERR);
5585 #endif /* USDT2 */
5586 return JNI_ERR;
5587 }
5589 JNIWrapper("AttachCurrentThreadAsDaemon");
5590 jint ret = attach_current_thread(vm, penv, _args, true);
5591 #ifndef USDT2
5592 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5593 #else /* USDT2 */
5594 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5595 ret);
5596 #endif /* USDT2 */
5597 return ret;
5598 }
5601 } // End extern "C"
5603 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5604 NULL,
5605 NULL,
5606 NULL,
5608 jni_DestroyJavaVM,
5609 jni_AttachCurrentThread,
5610 jni_DetachCurrentThread,
5611 jni_GetEnv,
5612 jni_AttachCurrentThreadAsDaemon
5613 };