Fri, 03 Dec 2010 01:34:31 -0800
6961690: load oops from constant table on SPARC
Summary: oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence.
Reviewed-by: never, kvn
1 /*
2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/compiledIC.hpp"
29 #include "code/icBuffer.hpp"
30 #include "code/nmethod.hpp"
31 #include "code/pcDesc.hpp"
32 #include "code/scopeDesc.hpp"
33 #include "code/vtableStubs.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerOracle.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #include "gc_implementation/g1/heapRegion.hpp"
39 #include "gc_interface/collectedHeap.hpp"
40 #include "interpreter/bytecode.hpp"
41 #include "interpreter/interpreter.hpp"
42 #include "interpreter/linkResolver.hpp"
43 #include "memory/barrierSet.hpp"
44 #include "memory/gcLocker.inline.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "opto/addnode.hpp"
49 #include "opto/callnode.hpp"
50 #include "opto/cfgnode.hpp"
51 #include "opto/connode.hpp"
52 #include "opto/graphKit.hpp"
53 #include "opto/machnode.hpp"
54 #include "opto/matcher.hpp"
55 #include "opto/memnode.hpp"
56 #include "opto/mulnode.hpp"
57 #include "opto/runtime.hpp"
58 #include "opto/subnode.hpp"
59 #include "runtime/fprofiler.hpp"
60 #include "runtime/handles.inline.hpp"
61 #include "runtime/interfaceSupport.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/sharedRuntime.hpp"
64 #include "runtime/signature.hpp"
65 #include "runtime/threadCritical.hpp"
66 #include "runtime/vframe.hpp"
67 #include "runtime/vframeArray.hpp"
68 #include "runtime/vframe_hp.hpp"
69 #include "utilities/copy.hpp"
70 #include "utilities/preserveException.hpp"
71 #ifdef TARGET_ARCH_MODEL_x86_32
72 # include "adfiles/ad_x86_32.hpp"
73 #endif
74 #ifdef TARGET_ARCH_MODEL_x86_64
75 # include "adfiles/ad_x86_64.hpp"
76 #endif
77 #ifdef TARGET_ARCH_MODEL_sparc
78 # include "adfiles/ad_sparc.hpp"
79 #endif
80 #ifdef TARGET_ARCH_MODEL_zero
81 # include "adfiles/ad_zero.hpp"
82 #endif
85 // For debugging purposes:
86 // To force FullGCALot inside a runtime function, add the following two lines
87 //
88 // Universe::release_fullgc_alot_dummy();
89 // MarkSweep::invoke(0, "Debugging");
90 //
91 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
96 // Compiled code entry points
97 address OptoRuntime::_new_instance_Java = NULL;
98 address OptoRuntime::_new_array_Java = NULL;
99 address OptoRuntime::_multianewarray2_Java = NULL;
100 address OptoRuntime::_multianewarray3_Java = NULL;
101 address OptoRuntime::_multianewarray4_Java = NULL;
102 address OptoRuntime::_multianewarray5_Java = NULL;
103 address OptoRuntime::_g1_wb_pre_Java = NULL;
104 address OptoRuntime::_g1_wb_post_Java = NULL;
105 address OptoRuntime::_vtable_must_compile_Java = NULL;
106 address OptoRuntime::_complete_monitor_locking_Java = NULL;
107 address OptoRuntime::_rethrow_Java = NULL;
109 address OptoRuntime::_slow_arraycopy_Java = NULL;
110 address OptoRuntime::_register_finalizer_Java = NULL;
112 # ifdef ENABLE_ZAP_DEAD_LOCALS
113 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
114 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
115 # endif
118 // This should be called in an assertion at the start of OptoRuntime routines
119 // which are entered from compiled code (all of them)
120 #ifndef PRODUCT
121 static bool check_compiled_frame(JavaThread* thread) {
122 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
123 #ifdef ASSERT
124 RegisterMap map(thread, false);
125 frame caller = thread->last_frame().sender(&map);
126 assert(caller.is_compiled_frame(), "not being called from compiled like code");
127 #endif /* ASSERT */
128 return true;
129 }
130 #endif
133 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
134 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)
136 void OptoRuntime::generate(ciEnv* env) {
138 generate_exception_blob();
140 // Note: tls: Means fetching the return oop out of the thread-local storage
141 //
142 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
143 // -------------------------------------------------------------------------------------------------------------------------------
144 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
145 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
146 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
147 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
148 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
149 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
150 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
151 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
152 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false);
153 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
155 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
156 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
158 # ifdef ENABLE_ZAP_DEAD_LOCALS
159 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
160 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
161 # endif
163 }
165 #undef gen
168 // Helper method to do generation of RunTimeStub's
169 address OptoRuntime::generate_stub( ciEnv* env,
170 TypeFunc_generator gen, address C_function,
171 const char *name, int is_fancy_jump,
172 bool pass_tls,
173 bool save_argument_registers,
174 bool return_pc ) {
175 ResourceMark rm;
176 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
177 return C.stub_entry_point();
178 }
180 const char* OptoRuntime::stub_name(address entry) {
181 #ifndef PRODUCT
182 CodeBlob* cb = CodeCache::find_blob(entry);
183 RuntimeStub* rs =(RuntimeStub *)cb;
184 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
185 return rs->name();
186 #else
187 // Fast implementation for product mode (maybe it should be inlined too)
188 return "runtime stub";
189 #endif
190 }
193 //=============================================================================
194 // Opto compiler runtime routines
195 //=============================================================================
198 //=============================allocation======================================
199 // We failed the fast-path allocation. Now we need to do a scavenge or GC
200 // and try allocation again.
202 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
203 // After any safepoint, just before going back to compiled code,
204 // we inform the GC that we will be doing initializing writes to
205 // this object in the future without emitting card-marks, so
206 // GC may take any compensating steps.
207 // NOTE: Keep this code consistent with GraphKit::store_barrier.
209 oop new_obj = thread->vm_result();
210 if (new_obj == NULL) return;
212 assert(Universe::heap()->can_elide_tlab_store_barriers(),
213 "compiler must check this first");
214 // GC may decide to give back a safer copy of new_obj.
215 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
216 thread->set_vm_result(new_obj);
217 }
219 // object allocation
220 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread))
221 JRT_BLOCK;
222 #ifndef PRODUCT
223 SharedRuntime::_new_instance_ctr++; // new instance requires GC
224 #endif
225 assert(check_compiled_frame(thread), "incorrect caller");
227 // These checks are cheap to make and support reflective allocation.
228 int lh = Klass::cast(klass)->layout_helper();
229 if (Klass::layout_helper_needs_slow_path(lh)
230 || !instanceKlass::cast(klass)->is_initialized()) {
231 KlassHandle kh(THREAD, klass);
232 kh->check_valid_for_instantiation(false, THREAD);
233 if (!HAS_PENDING_EXCEPTION) {
234 instanceKlass::cast(kh())->initialize(THREAD);
235 }
236 if (!HAS_PENDING_EXCEPTION) {
237 klass = kh();
238 } else {
239 klass = NULL;
240 }
241 }
243 if (klass != NULL) {
244 // Scavenge and allocate an instance.
245 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD);
246 thread->set_vm_result(result);
248 // Pass oops back through thread local storage. Our apparent type to Java
249 // is that we return an oop, but we can block on exit from this routine and
250 // a GC can trash the oop in C's return register. The generated stub will
251 // fetch the oop from TLS after any possible GC.
252 }
254 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
255 JRT_BLOCK_END;
257 if (GraphKit::use_ReduceInitialCardMarks()) {
258 // inform GC that we won't do card marks for initializing writes.
259 new_store_pre_barrier(thread);
260 }
261 JRT_END
264 // array allocation
265 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread))
266 JRT_BLOCK;
267 #ifndef PRODUCT
268 SharedRuntime::_new_array_ctr++; // new array requires GC
269 #endif
270 assert(check_compiled_frame(thread), "incorrect caller");
272 // Scavenge and allocate an instance.
273 oop result;
275 if (Klass::cast(array_type)->oop_is_typeArray()) {
276 // The oopFactory likes to work with the element type.
277 // (We could bypass the oopFactory, since it doesn't add much value.)
278 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
279 result = oopFactory::new_typeArray(elem_type, len, THREAD);
280 } else {
281 // Although the oopFactory likes to work with the elem_type,
282 // the compiler prefers the array_type, since it must already have
283 // that latter value in hand for the fast path.
284 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass();
285 result = oopFactory::new_objArray(elem_type, len, THREAD);
286 }
288 // Pass oops back through thread local storage. Our apparent type to Java
289 // is that we return an oop, but we can block on exit from this routine and
290 // a GC can trash the oop in C's return register. The generated stub will
291 // fetch the oop from TLS after any possible GC.
292 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
293 thread->set_vm_result(result);
294 JRT_BLOCK_END;
296 if (GraphKit::use_ReduceInitialCardMarks()) {
297 // inform GC that we won't do card marks for initializing writes.
298 new_store_pre_barrier(thread);
299 }
300 JRT_END
302 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
304 // multianewarray for 2 dimensions
305 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread))
306 #ifndef PRODUCT
307 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
308 #endif
309 assert(check_compiled_frame(thread), "incorrect caller");
310 assert(oop(elem_type)->is_klass(), "not a class");
311 jint dims[2];
312 dims[0] = len1;
313 dims[1] = len2;
314 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
315 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
316 thread->set_vm_result(obj);
317 JRT_END
319 // multianewarray for 3 dimensions
320 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread))
321 #ifndef PRODUCT
322 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
323 #endif
324 assert(check_compiled_frame(thread), "incorrect caller");
325 assert(oop(elem_type)->is_klass(), "not a class");
326 jint dims[3];
327 dims[0] = len1;
328 dims[1] = len2;
329 dims[2] = len3;
330 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
331 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
332 thread->set_vm_result(obj);
333 JRT_END
335 // multianewarray for 4 dimensions
336 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
337 #ifndef PRODUCT
338 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
339 #endif
340 assert(check_compiled_frame(thread), "incorrect caller");
341 assert(oop(elem_type)->is_klass(), "not a class");
342 jint dims[4];
343 dims[0] = len1;
344 dims[1] = len2;
345 dims[2] = len3;
346 dims[3] = len4;
347 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
348 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
349 thread->set_vm_result(obj);
350 JRT_END
352 // multianewarray for 5 dimensions
353 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
354 #ifndef PRODUCT
355 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
356 #endif
357 assert(check_compiled_frame(thread), "incorrect caller");
358 assert(oop(elem_type)->is_klass(), "not a class");
359 jint dims[5];
360 dims[0] = len1;
361 dims[1] = len2;
362 dims[2] = len3;
363 dims[3] = len4;
364 dims[4] = len5;
365 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
366 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
367 thread->set_vm_result(obj);
368 JRT_END
370 const TypeFunc *OptoRuntime::new_instance_Type() {
371 // create input type (domain)
372 const Type **fields = TypeTuple::fields(1);
373 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
374 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
376 // create result type (range)
377 fields = TypeTuple::fields(1);
378 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
380 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
382 return TypeFunc::make(domain, range);
383 }
386 const TypeFunc *OptoRuntime::athrow_Type() {
387 // create input type (domain)
388 const Type **fields = TypeTuple::fields(1);
389 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
390 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
392 // create result type (range)
393 fields = TypeTuple::fields(0);
395 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
397 return TypeFunc::make(domain, range);
398 }
401 const TypeFunc *OptoRuntime::new_array_Type() {
402 // create input type (domain)
403 const Type **fields = TypeTuple::fields(2);
404 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
405 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
406 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
408 // create result type (range)
409 fields = TypeTuple::fields(1);
410 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
412 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
414 return TypeFunc::make(domain, range);
415 }
417 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
418 // create input type (domain)
419 const int nargs = ndim + 1;
420 const Type **fields = TypeTuple::fields(nargs);
421 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
422 for( int i = 1; i < nargs; i++ )
423 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
424 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
426 // create result type (range)
427 fields = TypeTuple::fields(1);
428 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
429 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
431 return TypeFunc::make(domain, range);
432 }
434 const TypeFunc *OptoRuntime::multianewarray2_Type() {
435 return multianewarray_Type(2);
436 }
438 const TypeFunc *OptoRuntime::multianewarray3_Type() {
439 return multianewarray_Type(3);
440 }
442 const TypeFunc *OptoRuntime::multianewarray4_Type() {
443 return multianewarray_Type(4);
444 }
446 const TypeFunc *OptoRuntime::multianewarray5_Type() {
447 return multianewarray_Type(5);
448 }
450 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
451 const Type **fields = TypeTuple::fields(2);
452 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
453 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
454 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
456 // create result type (range)
457 fields = TypeTuple::fields(0);
458 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
460 return TypeFunc::make(domain, range);
461 }
463 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
465 const Type **fields = TypeTuple::fields(2);
466 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
467 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
468 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
470 // create result type (range)
471 fields = TypeTuple::fields(0);
472 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
474 return TypeFunc::make(domain, range);
475 }
477 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
478 // create input type (domain)
479 const Type **fields = TypeTuple::fields(1);
480 // symbolOop name of class to be loaded
481 fields[TypeFunc::Parms+0] = TypeInt::INT;
482 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
484 // create result type (range)
485 fields = TypeTuple::fields(0);
486 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
488 return TypeFunc::make(domain, range);
489 }
491 # ifdef ENABLE_ZAP_DEAD_LOCALS
492 // Type used for stub generation for zap_dead_locals.
493 // No inputs or outputs
494 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
495 // create input type (domain)
496 const Type **fields = TypeTuple::fields(0);
497 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
499 // create result type (range)
500 fields = TypeTuple::fields(0);
501 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
503 return TypeFunc::make(domain,range);
504 }
505 # endif
508 //-----------------------------------------------------------------------------
509 // Monitor Handling
510 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
511 // create input type (domain)
512 const Type **fields = TypeTuple::fields(2);
513 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
514 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
515 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
517 // create result type (range)
518 fields = TypeTuple::fields(0);
520 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
522 return TypeFunc::make(domain,range);
523 }
526 //-----------------------------------------------------------------------------
527 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
528 // create input type (domain)
529 const Type **fields = TypeTuple::fields(2);
530 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
531 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
532 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
534 // create result type (range)
535 fields = TypeTuple::fields(0);
537 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
539 return TypeFunc::make(domain,range);
540 }
542 const TypeFunc* OptoRuntime::flush_windows_Type() {
543 // create input type (domain)
544 const Type** fields = TypeTuple::fields(1);
545 fields[TypeFunc::Parms+0] = NULL; // void
546 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
548 // create result type
549 fields = TypeTuple::fields(1);
550 fields[TypeFunc::Parms+0] = NULL; // void
551 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
553 return TypeFunc::make(domain, range);
554 }
556 const TypeFunc* OptoRuntime::l2f_Type() {
557 // create input type (domain)
558 const Type **fields = TypeTuple::fields(2);
559 fields[TypeFunc::Parms+0] = TypeLong::LONG;
560 fields[TypeFunc::Parms+1] = Type::HALF;
561 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
563 // create result type (range)
564 fields = TypeTuple::fields(1);
565 fields[TypeFunc::Parms+0] = Type::FLOAT;
566 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
568 return TypeFunc::make(domain, range);
569 }
571 const TypeFunc* OptoRuntime::modf_Type() {
572 const Type **fields = TypeTuple::fields(2);
573 fields[TypeFunc::Parms+0] = Type::FLOAT;
574 fields[TypeFunc::Parms+1] = Type::FLOAT;
575 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
577 // create result type (range)
578 fields = TypeTuple::fields(1);
579 fields[TypeFunc::Parms+0] = Type::FLOAT;
581 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
583 return TypeFunc::make(domain, range);
584 }
586 const TypeFunc *OptoRuntime::Math_D_D_Type() {
587 // create input type (domain)
588 const Type **fields = TypeTuple::fields(2);
589 // symbolOop name of class to be loaded
590 fields[TypeFunc::Parms+0] = Type::DOUBLE;
591 fields[TypeFunc::Parms+1] = Type::HALF;
592 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
594 // create result type (range)
595 fields = TypeTuple::fields(2);
596 fields[TypeFunc::Parms+0] = Type::DOUBLE;
597 fields[TypeFunc::Parms+1] = Type::HALF;
598 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
600 return TypeFunc::make(domain, range);
601 }
603 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
604 const Type **fields = TypeTuple::fields(4);
605 fields[TypeFunc::Parms+0] = Type::DOUBLE;
606 fields[TypeFunc::Parms+1] = Type::HALF;
607 fields[TypeFunc::Parms+2] = Type::DOUBLE;
608 fields[TypeFunc::Parms+3] = Type::HALF;
609 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
611 // create result type (range)
612 fields = TypeTuple::fields(2);
613 fields[TypeFunc::Parms+0] = Type::DOUBLE;
614 fields[TypeFunc::Parms+1] = Type::HALF;
615 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
617 return TypeFunc::make(domain, range);
618 }
620 //-------------- currentTimeMillis
622 const TypeFunc* OptoRuntime::current_time_millis_Type() {
623 // create input type (domain)
624 const Type **fields = TypeTuple::fields(0);
625 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
627 // create result type (range)
628 fields = TypeTuple::fields(2);
629 fields[TypeFunc::Parms+0] = TypeLong::LONG;
630 fields[TypeFunc::Parms+1] = Type::HALF;
631 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
633 return TypeFunc::make(domain, range);
634 }
636 // arraycopy stub variations:
637 enum ArrayCopyType {
638 ac_fast, // void(ptr, ptr, size_t)
639 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
640 ac_slow, // void(ptr, int, ptr, int, int)
641 ac_generic // int(ptr, int, ptr, int, int)
642 };
644 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
645 // create input type (domain)
646 int num_args = (act == ac_fast ? 3 : 5);
647 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
648 int argcnt = num_args;
649 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
650 const Type** fields = TypeTuple::fields(argcnt);
651 int argp = TypeFunc::Parms;
652 fields[argp++] = TypePtr::NOTNULL; // src
653 if (num_size_args == 0) {
654 fields[argp++] = TypeInt::INT; // src_pos
655 }
656 fields[argp++] = TypePtr::NOTNULL; // dest
657 if (num_size_args == 0) {
658 fields[argp++] = TypeInt::INT; // dest_pos
659 fields[argp++] = TypeInt::INT; // length
660 }
661 while (num_size_args-- > 0) {
662 fields[argp++] = TypeX_X; // size in whatevers (size_t)
663 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
664 }
665 if (act == ac_checkcast) {
666 fields[argp++] = TypePtr::NOTNULL; // super_klass
667 }
668 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
669 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
671 // create result type if needed
672 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
673 fields = TypeTuple::fields(1);
674 if (retcnt == 0)
675 fields[TypeFunc::Parms+0] = NULL; // void
676 else
677 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
678 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
679 return TypeFunc::make(domain, range);
680 }
682 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
683 // This signature is simple: Two base pointers and a size_t.
684 return make_arraycopy_Type(ac_fast);
685 }
687 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
688 // An extension of fast_arraycopy_Type which adds type checking.
689 return make_arraycopy_Type(ac_checkcast);
690 }
692 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
693 // This signature is exactly the same as System.arraycopy.
694 // There are no intptr_t (int/long) arguments.
695 return make_arraycopy_Type(ac_slow);
696 }
698 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
699 // This signature is like System.arraycopy, except that it returns status.
700 return make_arraycopy_Type(ac_generic);
701 }
704 const TypeFunc* OptoRuntime::array_fill_Type() {
705 // create input type (domain): pointer, int, size_t
706 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1));
707 int argp = TypeFunc::Parms;
708 fields[argp++] = TypePtr::NOTNULL;
709 fields[argp++] = TypeInt::INT;
710 fields[argp++] = TypeX_X; // size in whatevers (size_t)
711 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
712 const TypeTuple *domain = TypeTuple::make(argp, fields);
714 // create result type
715 fields = TypeTuple::fields(1);
716 fields[TypeFunc::Parms+0] = NULL; // void
717 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
719 return TypeFunc::make(domain, range);
720 }
722 //------------- Interpreter state access for on stack replacement
723 const TypeFunc* OptoRuntime::osr_end_Type() {
724 // create input type (domain)
725 const Type **fields = TypeTuple::fields(1);
726 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
727 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
729 // create result type
730 fields = TypeTuple::fields(1);
731 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
732 fields[TypeFunc::Parms+0] = NULL; // void
733 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
734 return TypeFunc::make(domain, range);
735 }
737 //-------------- methodData update helpers
739 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
740 // create input type (domain)
741 const Type **fields = TypeTuple::fields(2);
742 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
743 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
744 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
746 // create result type
747 fields = TypeTuple::fields(1);
748 fields[TypeFunc::Parms+0] = NULL; // void
749 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
750 return TypeFunc::make(domain,range);
751 }
753 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
754 if (receiver == NULL) return;
755 klassOop receiver_klass = receiver->klass();
757 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
758 int empty_row = -1; // free row, if any is encountered
760 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
761 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
762 // if (vc->receiver(row) == receiver_klass)
763 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
764 intptr_t row_recv = *(mdp + receiver_off);
765 if (row_recv == (intptr_t) receiver_klass) {
766 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
767 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
768 *(mdp + count_off) += DataLayout::counter_increment;
769 return;
770 } else if (row_recv == 0) {
771 // else if (vc->receiver(row) == NULL)
772 empty_row = (int) row;
773 }
774 }
776 if (empty_row != -1) {
777 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
778 // vc->set_receiver(empty_row, receiver_klass);
779 *(mdp + receiver_off) = (intptr_t) receiver_klass;
780 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
781 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
782 *(mdp + count_off) = DataLayout::counter_increment;
783 } else {
784 // Receiver did not match any saved receiver and there is no empty row for it.
785 // Increment total counter to indicate polymorphic case.
786 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
787 *count_p += DataLayout::counter_increment;
788 }
789 JRT_END
791 //-----------------------------------------------------------------------------
792 // implicit exception support.
794 static void report_null_exception_in_code_cache(address exception_pc) {
795 ResourceMark rm;
796 CodeBlob* n = CodeCache::find_blob(exception_pc);
797 if (n != NULL) {
798 tty->print_cr("#");
799 tty->print_cr("# HotSpot Runtime Error, null exception in generated code");
800 tty->print_cr("#");
801 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc);
803 if (n->is_nmethod()) {
804 methodOop method = ((nmethod*)n)->method();
805 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string());
806 tty->print_cr("#");
807 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) {
808 const char* title = "HotSpot Runtime Error";
809 const char* question = "Do you want to exclude compilation of this method in future runs?";
810 if (os::message_box(title, question)) {
811 CompilerOracle::append_comment_to_file("");
812 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude");
813 CompilerOracle::append_comment_to_file("");
814 CompilerOracle::append_exclude_to_file(method);
815 tty->print_cr("#");
816 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile);
817 tty->print_cr("#");
818 }
819 }
820 fatal("Implicit null exception happened in compiled method");
821 } else {
822 n->print();
823 fatal("Implicit null exception happened in generated stub");
824 }
825 }
826 fatal("Implicit null exception at wrong place");
827 }
830 //-------------------------------------------------------------------------------------
831 // register policy
833 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
834 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
835 switch (register_save_policy[reg]) {
836 case 'C': return false; //SOC
837 case 'E': return true ; //SOE
838 case 'N': return false; //NS
839 case 'A': return false; //AS
840 }
841 ShouldNotReachHere();
842 return false;
843 }
845 //-----------------------------------------------------------------------
846 // Exceptions
847 //
849 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
851 // The method is an entry that is always called by a C++ method not
852 // directly from compiled code. Compiled code will call the C++ method following.
853 // We can't allow async exception to be installed during exception processing.
854 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
856 // Do not confuse exception_oop with pending_exception. The exception_oop
857 // is only used to pass arguments into the method. Not for general
858 // exception handling. DO NOT CHANGE IT to use pending_exception, since
859 // the runtime stubs checks this on exit.
860 assert(thread->exception_oop() != NULL, "exception oop is found");
861 address handler_address = NULL;
863 Handle exception(thread, thread->exception_oop());
865 if (TraceExceptions) {
866 trace_exception(exception(), thread->exception_pc(), "");
867 }
868 // for AbortVMOnException flag
869 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
871 #ifdef ASSERT
872 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
873 // should throw an exception here
874 ShouldNotReachHere();
875 }
876 #endif
879 // new exception handling: this method is entered only from adapters
880 // exceptions from compiled java methods are handled in compiled code
881 // using rethrow node
883 address pc = thread->exception_pc();
884 nm = CodeCache::find_nmethod(pc);
885 assert(nm != NULL, "No NMethod found");
886 if (nm->is_native_method()) {
887 fatal("Native mathod should not have path to exception handling");
888 } else {
889 // we are switching to old paradigm: search for exception handler in caller_frame
890 // instead in exception handler of caller_frame.sender()
892 if (JvmtiExport::can_post_on_exceptions()) {
893 // "Full-speed catching" is not necessary here,
894 // since we're notifying the VM on every catch.
895 // Force deoptimization and the rest of the lookup
896 // will be fine.
897 deoptimize_caller_frame(thread, true);
898 }
900 // Check the stack guard pages. If enabled, look for handler in this frame;
901 // otherwise, forcibly unwind the frame.
902 //
903 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
904 bool force_unwind = !thread->reguard_stack();
905 bool deopting = false;
906 if (nm->is_deopt_pc(pc)) {
907 deopting = true;
908 RegisterMap map(thread, false);
909 frame deoptee = thread->last_frame().sender(&map);
910 assert(deoptee.is_deoptimized_frame(), "must be deopted");
911 // Adjust the pc back to the original throwing pc
912 pc = deoptee.pc();
913 }
915 // If we are forcing an unwind because of stack overflow then deopt is
916 // irrelevant sice we are throwing the frame away anyway.
918 if (deopting && !force_unwind) {
919 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
920 } else {
922 handler_address =
923 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
925 if (handler_address == NULL) {
926 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
927 assert (handler_address != NULL, "must have compiled handler");
928 // Update the exception cache only when the unwind was not forced.
929 if (!force_unwind) {
930 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
931 }
932 } else {
933 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
934 }
935 }
937 thread->set_exception_pc(pc);
938 thread->set_exception_handler_pc(handler_address);
939 thread->set_exception_stack_size(0);
941 // Check if the exception PC is a MethodHandle call site.
942 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
943 }
945 // Restore correct return pc. Was saved above.
946 thread->set_exception_oop(exception());
947 return handler_address;
949 JRT_END
951 // We are entering here from exception_blob
952 // If there is a compiled exception handler in this method, we will continue there;
953 // otherwise we will unwind the stack and continue at the caller of top frame method
954 // Note we enter without the usual JRT wrapper. We will call a helper routine that
955 // will do the normal VM entry. We do it this way so that we can see if the nmethod
956 // we looked up the handler for has been deoptimized in the meantime. If it has been
957 // we must not use the handler and instread return the deopt blob.
958 address OptoRuntime::handle_exception_C(JavaThread* thread) {
959 //
960 // We are in Java not VM and in debug mode we have a NoHandleMark
961 //
962 #ifndef PRODUCT
963 SharedRuntime::_find_handler_ctr++; // find exception handler
964 #endif
965 debug_only(NoHandleMark __hm;)
966 nmethod* nm = NULL;
967 address handler_address = NULL;
968 {
969 // Enter the VM
971 ResetNoHandleMark rnhm;
972 handler_address = handle_exception_C_helper(thread, nm);
973 }
975 // Back in java: Use no oops, DON'T safepoint
977 // Now check to see if the handler we are returning is in a now
978 // deoptimized frame
980 if (nm != NULL) {
981 RegisterMap map(thread, false);
982 frame caller = thread->last_frame().sender(&map);
983 #ifdef ASSERT
984 assert(caller.is_compiled_frame(), "must be");
985 #endif // ASSERT
986 if (caller.is_deoptimized_frame()) {
987 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
988 }
989 }
990 return handler_address;
991 }
993 //------------------------------rethrow----------------------------------------
994 // We get here after compiled code has executed a 'RethrowNode'. The callee
995 // is either throwing or rethrowing an exception. The callee-save registers
996 // have been restored, synchronized objects have been unlocked and the callee
997 // stack frame has been removed. The return address was passed in.
998 // Exception oop is passed as the 1st argument. This routine is then called
999 // from the stub. On exit, we know where to jump in the caller's code.
1000 // After this C code exits, the stub will pop his frame and end in a jump
1001 // (instead of a return). We enter the caller's default handler.
1002 //
1003 // This must be JRT_LEAF:
1004 // - caller will not change its state as we cannot block on exit,
1005 // therefore raw_exception_handler_for_return_address is all it takes
1006 // to handle deoptimized blobs
1007 //
1008 // However, there needs to be a safepoint check in the middle! So compiled
1009 // safepoints are completely watertight.
1010 //
1011 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1012 //
1013 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1014 //
1015 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1016 #ifndef PRODUCT
1017 SharedRuntime::_rethrow_ctr++; // count rethrows
1018 #endif
1019 assert (exception != NULL, "should have thrown a NULLPointerException");
1020 #ifdef ASSERT
1021 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1022 // should throw an exception here
1023 ShouldNotReachHere();
1024 }
1025 #endif
1027 thread->set_vm_result(exception);
1028 // Frame not compiled (handles deoptimization blob)
1029 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1030 }
1033 const TypeFunc *OptoRuntime::rethrow_Type() {
1034 // create input type (domain)
1035 const Type **fields = TypeTuple::fields(1);
1036 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1037 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1039 // create result type (range)
1040 fields = TypeTuple::fields(1);
1041 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1042 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1044 return TypeFunc::make(domain, range);
1045 }
1048 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1049 // Deoptimize frame
1050 if (doit) {
1051 // Called from within the owner thread, so no need for safepoint
1052 RegisterMap reg_map(thread);
1053 frame stub_frame = thread->last_frame();
1054 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1055 frame caller_frame = stub_frame.sender(®_map);
1057 // bypass VM_DeoptimizeFrame and deoptimize the frame directly
1058 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1059 }
1060 }
1063 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1064 // create input type (domain)
1065 const Type **fields = TypeTuple::fields(1);
1066 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1067 // // The JavaThread* is passed to each routine as the last argument
1068 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1069 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1071 // create result type (range)
1072 fields = TypeTuple::fields(0);
1074 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1076 return TypeFunc::make(domain,range);
1077 }
1080 //-----------------------------------------------------------------------------
1081 // Dtrace support. entry and exit probes have the same signature
1082 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1083 // create input type (domain)
1084 const Type **fields = TypeTuple::fields(2);
1085 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1086 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering
1087 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1089 // create result type (range)
1090 fields = TypeTuple::fields(0);
1092 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1094 return TypeFunc::make(domain,range);
1095 }
1097 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1098 // create input type (domain)
1099 const Type **fields = TypeTuple::fields(2);
1100 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1101 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1103 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1105 // create result type (range)
1106 fields = TypeTuple::fields(0);
1108 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1110 return TypeFunc::make(domain,range);
1111 }
1114 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1115 assert(obj->is_oop(), "must be a valid oop");
1116 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
1117 instanceKlass::register_finalizer(instanceOop(obj), CHECK);
1118 JRT_END
1120 //-----------------------------------------------------------------------------
1122 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1124 //
1125 // dump the collected NamedCounters.
1126 //
1127 void OptoRuntime::print_named_counters() {
1128 int total_lock_count = 0;
1129 int eliminated_lock_count = 0;
1131 NamedCounter* c = _named_counters;
1132 while (c) {
1133 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1134 int count = c->count();
1135 if (count > 0) {
1136 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1137 if (Verbose) {
1138 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1139 }
1140 total_lock_count += count;
1141 if (eliminated) {
1142 eliminated_lock_count += count;
1143 }
1144 }
1145 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1146 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1147 if (blc->nonzero()) {
1148 tty->print_cr("%s", c->name());
1149 blc->print_on(tty);
1150 }
1151 }
1152 c = c->next();
1153 }
1154 if (total_lock_count > 0) {
1155 tty->print_cr("dynamic locks: %d", total_lock_count);
1156 if (eliminated_lock_count) {
1157 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1158 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1159 }
1160 }
1161 }
1163 //
1164 // Allocate a new NamedCounter. The JVMState is used to generate the
1165 // name which consists of method@line for the inlining tree.
1166 //
1168 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1169 int max_depth = youngest_jvms->depth();
1171 // Visit scopes from youngest to oldest.
1172 bool first = true;
1173 stringStream st;
1174 for (int depth = max_depth; depth >= 1; depth--) {
1175 JVMState* jvms = youngest_jvms->of_depth(depth);
1176 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1177 if (!first) {
1178 st.print(" ");
1179 } else {
1180 first = false;
1181 }
1182 int bci = jvms->bci();
1183 if (bci < 0) bci = 0;
1184 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1185 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1186 }
1187 NamedCounter* c;
1188 if (tag == NamedCounter::BiasedLockingCounter) {
1189 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1190 } else {
1191 c = new NamedCounter(strdup(st.as_string()), tag);
1192 }
1194 // atomically add the new counter to the head of the list. We only
1195 // add counters so this is safe.
1196 NamedCounter* head;
1197 do {
1198 head = _named_counters;
1199 c->set_next(head);
1200 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1201 return c;
1202 }
1204 //-----------------------------------------------------------------------------
1205 // Non-product code
1206 #ifndef PRODUCT
1208 int trace_exception_counter = 0;
1209 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1210 ttyLocker ttyl;
1211 trace_exception_counter++;
1212 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1213 exception_oop->print_value();
1214 tty->print(" in ");
1215 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1216 if (blob->is_nmethod()) {
1217 ((nmethod*)blob)->method()->print_value();
1218 } else if (blob->is_runtime_stub()) {
1219 tty->print("<runtime-stub>");
1220 } else {
1221 tty->print("<unknown>");
1222 }
1223 tty->print(" at " INTPTR_FORMAT, exception_pc);
1224 tty->print_cr("]");
1225 }
1227 #endif // PRODUCT
1230 # ifdef ENABLE_ZAP_DEAD_LOCALS
1231 // Called from call sites in compiled code with oop maps (actually safepoints)
1232 // Zaps dead locals in first java frame.
1233 // Is entry because may need to lock to generate oop maps
1234 // Currently, only used for compiler frames, but someday may be used
1235 // for interpreter frames, too.
1237 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1239 // avoid pointers to member funcs with these helpers
1240 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1241 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1244 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1245 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1246 assert(JavaThread::current() == thread, "is this needed?");
1248 if ( !ZapDeadCompiledLocals ) return;
1250 bool skip = false;
1252 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1253 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1254 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1255 warning("starting zapping after skipping");
1257 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1258 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1259 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1260 warning("about to zap last zap");
1262 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1264 if ( skip ) return;
1266 // find java frame and zap it
1268 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1269 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1270 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1271 return;
1272 }
1273 }
1274 warning("no frame found to zap in zap_dead_Java_locals_C");
1275 }
1277 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1278 zap_dead_java_or_native_locals(thread, is_java_frame);
1279 JRT_END
1281 // The following does not work because for one thing, the
1282 // thread state is wrong; it expects java, but it is native.
1283 // Also, the invariants in a native stub are different and
1284 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1285 // in there.
1286 // So for now, we do not zap in native stubs.
1288 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1289 zap_dead_java_or_native_locals(thread, is_native_frame);
1290 JRT_END
1292 # endif