Sat, 28 Mar 2009 15:47:29 -0700
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
Summary: When using compressed oops, rather than chaining the overflowed grey objects' pre-images through their klass words, we use GC-worker thread-local overflow stacks.
Reviewed-by: jcoomes, jmasa
1 /*
2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 class AdapterHandlerEntry;
26 class vframeStream;
28 // Runtime is the base class for various runtime interfaces
29 // (InterpreterRuntime, CompilerRuntime, etc.). It provides
30 // shared functionality such as exception forwarding (C++ to
31 // Java exceptions), locking/unlocking mechanisms, statistical
32 // information, etc.
34 class SharedRuntime: AllStatic {
35 private:
36 static methodHandle resolve_sub_helper(JavaThread *thread,
37 bool is_virtual,
38 bool is_optimized, TRAPS);
40 // Shared stub locations
42 static RuntimeStub* _wrong_method_blob;
43 static RuntimeStub* _ic_miss_blob;
44 static RuntimeStub* _resolve_opt_virtual_call_blob;
45 static RuntimeStub* _resolve_virtual_call_blob;
46 static RuntimeStub* _resolve_static_call_blob;
48 static SafepointBlob* _polling_page_safepoint_handler_blob;
49 static SafepointBlob* _polling_page_return_handler_blob;
50 #ifdef COMPILER2
51 static ExceptionBlob* _exception_blob;
52 static UncommonTrapBlob* _uncommon_trap_blob;
53 #endif // COMPILER2
55 #ifndef PRODUCT
57 // Counters
58 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable)
60 #endif // !PRODUCT
61 public:
63 // max bytes for each dtrace string parameter
64 enum { max_dtrace_string_size = 256 };
66 // The following arithmetic routines are used on platforms that do
67 // not have machine instructions to implement their functionality.
68 // Do not remove these.
70 // long arithmetics
71 static jlong lmul(jlong y, jlong x);
72 static jlong ldiv(jlong y, jlong x);
73 static jlong lrem(jlong y, jlong x);
75 // float and double remainder
76 static jfloat frem(jfloat x, jfloat y);
77 static jdouble drem(jdouble x, jdouble y);
79 // float conversion (needs to set appropriate rounding mode)
80 static jint f2i (jfloat x);
81 static jlong f2l (jfloat x);
82 static jint d2i (jdouble x);
83 static jlong d2l (jdouble x);
84 static jfloat d2f (jdouble x);
85 static jfloat l2f (jlong x);
86 static jdouble l2d (jlong x);
88 // double trigonometrics and transcendentals
89 static jdouble dsin(jdouble x);
90 static jdouble dcos(jdouble x);
91 static jdouble dtan(jdouble x);
92 static jdouble dlog(jdouble x);
93 static jdouble dlog10(jdouble x);
94 static jdouble dexp(jdouble x);
95 static jdouble dpow(jdouble x, jdouble y);
98 // exception handling across interpreter/compiler boundaries
99 static address raw_exception_handler_for_return_address(address return_address);
100 static address exception_handler_for_return_address(address return_address);
102 #ifndef SERIALGC
103 // G1 write barriers
104 static void g1_wb_pre(oopDesc* orig, JavaThread *thread);
105 static void g1_wb_post(void* card_addr, JavaThread* thread);
106 #endif // !SERIALGC
108 // exception handling and implicit exceptions
109 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception,
110 bool force_unwind, bool top_frame_only);
111 enum ImplicitExceptionKind {
112 IMPLICIT_NULL,
113 IMPLICIT_DIVIDE_BY_ZERO,
114 STACK_OVERFLOW
115 };
116 static void throw_AbstractMethodError(JavaThread* thread);
117 static void throw_IncompatibleClassChangeError(JavaThread* thread);
118 static void throw_ArithmeticException(JavaThread* thread);
119 static void throw_NullPointerException(JavaThread* thread);
120 static void throw_NullPointerException_at_call(JavaThread* thread);
121 static void throw_StackOverflowError(JavaThread* thread);
122 static address continuation_for_implicit_exception(JavaThread* thread,
123 address faulting_pc,
124 ImplicitExceptionKind exception_kind);
126 // Shared stub locations
127 static address get_poll_stub(address pc);
129 static address get_ic_miss_stub() {
130 assert(_ic_miss_blob!= NULL, "oops");
131 return _ic_miss_blob->instructions_begin();
132 }
134 static address get_handle_wrong_method_stub() {
135 assert(_wrong_method_blob!= NULL, "oops");
136 return _wrong_method_blob->instructions_begin();
137 }
139 #ifdef COMPILER2
140 static void generate_uncommon_trap_blob(void);
141 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; }
142 #endif // COMPILER2
144 static address get_resolve_opt_virtual_call_stub(){
145 assert(_resolve_opt_virtual_call_blob != NULL, "oops");
146 return _resolve_opt_virtual_call_blob->instructions_begin();
147 }
148 static address get_resolve_virtual_call_stub() {
149 assert(_resolve_virtual_call_blob != NULL, "oops");
150 return _resolve_virtual_call_blob->instructions_begin();
151 }
152 static address get_resolve_static_call_stub() {
153 assert(_resolve_static_call_blob != NULL, "oops");
154 return _resolve_static_call_blob->instructions_begin();
155 }
157 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; }
158 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; }
160 // Counters
161 #ifndef PRODUCT
162 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; }
163 #endif // PRODUCT
165 // Helper routine for full-speed JVMTI exception throwing support
166 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception);
167 static void throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message = NULL);
169 // RedefineClasses() tracing support for obsolete method entry
170 static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m);
172 // To be used as the entry point for unresolved native methods.
173 static address native_method_throw_unsatisfied_link_error_entry();
175 // bytecode tracing is only used by the TraceBytecodes
176 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0;
178 // Used to back off a spin lock that is under heavy contention
179 static void yield_all(JavaThread* thread, int attempts = 0);
181 static oop retrieve_receiver( symbolHandle sig, frame caller );
183 static void verify_caller_frame(frame caller_frame, methodHandle callee_method) PRODUCT_RETURN;
184 static methodHandle find_callee_method_inside_interpreter(frame caller_frame, methodHandle caller_method, int bci) PRODUCT_RETURN_(return methodHandle(););
186 static void register_finalizer(JavaThread* thread, oopDesc* obj);
188 // dtrace notifications
189 static int dtrace_object_alloc(oopDesc* o);
190 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o);
191 static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m);
192 static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m);
194 // Utility method for retrieving the Java thread id, returns 0 if the
195 // thread is not a well formed Java thread.
196 static jlong get_java_tid(Thread* thread);
199 // used by native wrappers to reenable yellow if overflow happened in native code
200 static void reguard_yellow_pages();
202 /**
203 * Fill in the "X cannot be cast to a Y" message for ClassCastException
204 *
205 * @param thr the current thread
206 * @param name the name of the class of the object attempted to be cast
207 * @return the dynamically allocated exception message (must be freed
208 * by the caller using a resource mark)
209 *
210 * BCP must refer to the current 'checkcast' opcode for the frame
211 * on top of the stack.
212 * The caller (or one of it's callers) must use a ResourceMark
213 * in order to correctly free the result.
214 */
215 static char* generate_class_cast_message(JavaThread* thr, const char* name);
217 /**
218 * Fill in the "X cannot be cast to a Y" message for ClassCastException
219 *
220 * @param name the name of the class of the object attempted to be cast
221 * @param klass the name of the target klass attempt
222 * @return the dynamically allocated exception message (must be freed
223 * by the caller using a resource mark)
224 *
225 * This version does not require access the frame, so it can be called
226 * from interpreted code
227 * The caller (or one of it's callers) must use a ResourceMark
228 * in order to correctly free the result.
229 */
230 static char* generate_class_cast_message(const char* name, const char* klass);
232 // Resolves a call site- may patch in the destination of the call into the
233 // compiled code.
234 static methodHandle resolve_helper(JavaThread *thread,
235 bool is_virtual,
236 bool is_optimized, TRAPS);
238 static void generate_stubs(void);
240 private:
241 // deopt blob
242 static void generate_deopt_blob(void);
243 static DeoptimizationBlob* _deopt_blob;
245 public:
246 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; }
248 // Resets a call-site in compiled code so it will get resolved again.
249 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS);
251 // In the code prolog, if the klass comparison fails, the inline cache
252 // misses and the call site is patched to megamorphic
253 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS);
255 // Find the method that called us.
256 static methodHandle find_callee_method(JavaThread* thread, TRAPS);
259 private:
260 static Handle find_callee_info(JavaThread* thread,
261 Bytecodes::Code& bc,
262 CallInfo& callinfo, TRAPS);
263 static Handle find_callee_info_helper(JavaThread* thread,
264 vframeStream& vfst,
265 Bytecodes::Code& bc,
266 CallInfo& callinfo, TRAPS);
268 static address clean_virtual_call_entry();
269 static address clean_opt_virtual_call_entry();
270 static address clean_static_call_entry();
272 public:
274 // Read the array of BasicTypes from a Java signature, and compute where
275 // compiled Java code would like to put the results. Values in reg_lo and
276 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
277 // registers, those above refer to 4-byte stack slots. All stack slots are
278 // based off of the window top. SharedInfo::stack0 refers to the first usable
279 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
280 // 4-bytes higher. So for sparc because the register window save area is at
281 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0
282 // will be just above it. (
283 // return value is the maximum number of VMReg stack slots the convention will use.
284 static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing);
286 // Ditto except for calling C
287 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed);
289 // Generate I2C and C2I adapters. These adapters are simple argument marshalling
290 // blobs. Unlike adapters in the tiger and earlier releases the code in these
291 // blobs does not create a new frame and are therefore virtually invisible
292 // to the stack walking code. In general these blobs extend the callers stack
293 // as needed for the conversion of argument locations.
295 // When calling a c2i blob the code will always call the interpreter even if
296 // by the time we reach the blob there is compiled code available. This allows
297 // the blob to pass the incoming stack pointer (the sender sp) in a known
298 // location for the interpreter to record. This is used by the frame code
299 // to correct the sender code to match up with the stack pointer when the
300 // thread left the compiled code. In addition it allows the interpreter
301 // to remove the space the c2i adapter allocated to do it argument conversion.
303 // Although a c2i blob will always run interpreted even if compiled code is
304 // present if we see that compiled code is present the compiled call site
305 // will be patched/re-resolved so that later calls will run compiled.
307 // Aditionally a c2i blob need to have a unverified entry because it can be reached
308 // in situations where the call site is an inlined cache site and may go megamorphic.
310 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed
311 // that the interpreter before it does any call dispatch will record the current
312 // stack pointer in the interpreter frame. On return it will restore the stack
313 // pointer as needed. This means the i2c adapter code doesn't need any special
314 // handshaking path with compiled code to keep the stack walking correct.
316 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm,
317 int total_args_passed,
318 int max_arg,
319 const BasicType *sig_bt,
320 const VMRegPair *regs);
322 // OSR support
324 // OSR_migration_begin will extract the jvm state from an interpreter
325 // frame (locals, monitors) and store the data in a piece of C heap
326 // storage. This then allows the interpreter frame to be removed from the
327 // stack and the OSR nmethod to be called. That method is called with a
328 // pointer to the C heap storage. This pointer is the return value from
329 // OSR_migration_begin.
331 static intptr_t* OSR_migration_begin( JavaThread *thread);
333 // OSR_migration_end is a trivial routine. It is called after the compiled
334 // method has extracted the jvm state from the C heap that OSR_migration_begin
335 // created. It's entire job is to simply free this storage.
336 static void OSR_migration_end ( intptr_t* buf);
338 // Convert a sig into a calling convention register layout
339 // and find interesting things about it.
340 static VMRegPair* find_callee_arguments(symbolOop sig, bool is_static, int *arg_size);
341 static VMReg name_for_receiver();
343 // "Top of Stack" slots that may be unused by the calling convention but must
344 // otherwise be preserved.
345 // On Intel these are not necessary and the value can be zero.
346 // On Sparc this describes the words reserved for storing a register window
347 // when an interrupt occurs.
348 static uint out_preserve_stack_slots();
350 // Save and restore a native result
351 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
352 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
354 // Generate a native wrapper for a given method. The method takes arguments
355 // in the Java compiled code convention, marshals them to the native
356 // convention (handlizes oops, etc), transitions to native, makes the call,
357 // returns to java state (possibly blocking), unhandlizes any result and
358 // returns.
359 static nmethod *generate_native_wrapper(MacroAssembler* masm,
360 methodHandle method,
361 int total_args_passed,
362 int max_arg,
363 BasicType *sig_bt,
364 VMRegPair *regs,
365 BasicType ret_type );
367 #ifdef HAVE_DTRACE_H
368 // Generate a dtrace wrapper for a given method. The method takes arguments
369 // in the Java compiled code convention, marshals them to the native
370 // convention (handlizes oops, etc), transitions to native, makes the call,
371 // returns to java state (possibly blocking), unhandlizes any result and
372 // returns.
373 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm,
374 methodHandle method);
376 // dtrace support to convert a Java string to utf8
377 static void get_utf(oopDesc* src, address dst);
378 #endif // def HAVE_DTRACE_H
380 // A compiled caller has just called the interpreter, but compiled code
381 // exists. Patch the caller so he no longer calls into the interpreter.
382 static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc);
384 // Slow-path Locking and Unlocking
385 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
386 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
388 // Resolving of calls
389 static address resolve_static_call_C (JavaThread *thread);
390 static address resolve_virtual_call_C (JavaThread *thread);
391 static address resolve_opt_virtual_call_C(JavaThread *thread);
393 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.)
394 static void slow_arraycopy_C(oopDesc* src, jint src_pos,
395 oopDesc* dest, jint dest_pos,
396 jint length, JavaThread* thread);
398 // handle ic miss with caller being compiled code
399 // wrong method handling (inline cache misses, zombie methods)
400 static address handle_wrong_method(JavaThread* thread);
401 static address handle_wrong_method_ic_miss(JavaThread* thread);
403 #ifndef PRODUCT
405 // Collect and print inline cache miss statistics
406 private:
407 enum { maxICmiss_count = 100 };
408 static int _ICmiss_index; // length of IC miss histogram
409 static int _ICmiss_count[maxICmiss_count]; // miss counts
410 static address _ICmiss_at[maxICmiss_count]; // miss addresses
411 static void trace_ic_miss(address at);
413 public:
414 static int _monitor_enter_ctr; // monitor enter slow
415 static int _monitor_exit_ctr; // monitor exit slow
416 static int _throw_null_ctr; // throwing a null-pointer exception
417 static int _ic_miss_ctr; // total # of IC misses
418 static int _wrong_method_ctr;
419 static int _resolve_static_ctr;
420 static int _resolve_virtual_ctr;
421 static int _resolve_opt_virtual_ctr;
422 static int _implicit_null_throws;
423 static int _implicit_div0_throws;
425 static int _jbyte_array_copy_ctr; // Slow-path byte array copy
426 static int _jshort_array_copy_ctr; // Slow-path short array copy
427 static int _jint_array_copy_ctr; // Slow-path int array copy
428 static int _jlong_array_copy_ctr; // Slow-path long array copy
429 static int _oop_array_copy_ctr; // Slow-path oop array copy
430 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast
431 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks
432 static int _generic_array_copy_ctr; // Slow-path includes type decoding
433 static int _slow_array_copy_ctr; // Slow-path failed out to a method call
435 static int _new_instance_ctr; // 'new' object requires GC
436 static int _new_array_ctr; // 'new' array requires GC
437 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr;
438 static int _find_handler_ctr; // find exception handler
439 static int _rethrow_ctr; // rethrow exception
440 static int _mon_enter_stub_ctr; // monitor enter stub
441 static int _mon_exit_stub_ctr; // monitor exit stub
442 static int _mon_enter_ctr; // monitor enter slow
443 static int _mon_exit_ctr; // monitor exit slow
444 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check
446 // Statistics code
447 // stats for "normal" compiled calls (non-interface)
448 static int _nof_normal_calls; // total # of calls
449 static int _nof_optimized_calls; // total # of statically-bound calls
450 static int _nof_inlined_calls; // total # of inlined normal calls
451 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial)
452 static int _nof_inlined_static_calls; // total # of inlined static calls
453 // stats for compiled interface calls
454 static int _nof_interface_calls; // total # of compiled calls
455 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls
456 static int _nof_inlined_interface_calls; // total # of inlined interface calls
457 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls
458 // stats for runtime exceptions
459 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining
461 public: // for compiler
462 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; }
463 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; }
464 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; }
465 static address nof_static_calls_addr() { return (address)&_nof_static_calls; }
466 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; }
467 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; }
468 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; }
469 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; }
470 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; }
471 static void print_call_statistics(int comp_total);
472 static void print_statistics();
473 static void print_ic_miss_histogram();
475 #endif // PRODUCT
476 };
479 // ---------------------------------------------------------------------------
480 // Implementation of AdapterHandlerLibrary
481 //
482 // This library manages argument marshaling adapters and native wrappers.
483 // There are 2 flavors of adapters: I2C and C2I.
484 //
485 // The I2C flavor takes a stock interpreted call setup, marshals the arguments
486 // for a Java-compiled call, and jumps to Rmethod-> code()->
487 // instructions_begin(). It is broken to call it without an nmethod assigned.
488 // The usual behavior is to lift any register arguments up out of the stack
489 // and possibly re-pack the extra arguments to be contigious. I2C adapters
490 // will save what the interpreter's stack pointer will be after arguments are
491 // popped, then adjust the interpreter's frame size to force alignment and
492 // possibly to repack the arguments. After re-packing, it jumps to the
493 // compiled code start. There are no safepoints in this adapter code and a GC
494 // cannot happen while marshaling is in progress.
495 //
496 // The C2I flavor takes a stock compiled call setup plus the target method in
497 // Rmethod, marshals the arguments for an interpreted call and jumps to
498 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been
499 // setup. Compiled frames are fixed-size and the args are likely not in the
500 // right place. Hence all the args will likely be copied into the
501 // interpreter's frame, forcing that frame to grow. The compiled frame's
502 // outgoing stack args will be dead after the copy.
503 //
504 // Native wrappers, like adapters, marshal arguments. Unlike adapters they
505 // also perform an offical frame push & pop. They have a call to the native
506 // routine in their middles and end in a return (instead of ending in a jump).
507 // The native wrappers are stored in real nmethods instead of the BufferBlobs
508 // used by the adapters. The code generation happens here because it's very
509 // similar to what the adapters have to do.
511 class AdapterHandlerEntry : public CHeapObj {
512 private:
513 address _i2c_entry;
514 address _c2i_entry;
515 address _c2i_unverified_entry;
517 public:
519 // The name we give all buffer blobs
520 static const char* name;
522 AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry):
523 _i2c_entry(i2c_entry),
524 _c2i_entry(c2i_entry),
525 _c2i_unverified_entry(c2i_unverified_entry) {
526 }
528 address get_i2c_entry() { return _i2c_entry; }
529 address get_c2i_entry() { return _c2i_entry; }
530 address get_c2i_unverified_entry() { return _c2i_unverified_entry; }
532 void relocate(address new_base);
533 #ifndef PRODUCT
534 void print();
535 #endif /* PRODUCT */
536 };
538 class AdapterHandlerLibrary: public AllStatic {
539 private:
540 static u_char _buffer[]; // the temporary code buffer
541 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
542 static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
543 enum {
544 AbstractMethodHandler = 1 // special handler for abstract methods
545 };
546 static void initialize();
547 static int get_create_adapter_index(methodHandle method);
548 static address get_i2c_entry( int index ) {
549 return get_entry(index)->get_i2c_entry();
550 }
551 static address get_c2i_entry( int index ) {
552 return get_entry(index)->get_c2i_entry();
553 }
554 static address get_c2i_unverified_entry( int index ) {
555 return get_entry(index)->get_c2i_unverified_entry();
556 }
558 public:
559 static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
560 static nmethod* create_native_wrapper(methodHandle method);
561 static AdapterHandlerEntry* get_adapter(methodHandle method) {
562 return get_entry(get_create_adapter_index(method));
563 }
564 #ifdef HAVE_DTRACE_H
565 static nmethod* create_dtrace_nmethod (methodHandle method);
566 #endif // HAVE_DTRACE_H
568 #ifndef PRODUCT
569 static void print_handler(CodeBlob* b);
570 static bool contains(CodeBlob* b);
571 #endif /* PRODUCT */
573 };