1 /*
2 * Copyright (c) 1998, 2011, 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 */
24
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
83 #ifdef TARGET_ARCH_MODEL_arm
84 # include "adfiles/ad_arm.hpp"
85 #endif
86 #ifdef TARGET_ARCH_MODEL_ppc
87 # include "adfiles/ad_ppc.hpp"
88 #endif
89
90
91 // For debugging purposes:
92 // To force FullGCALot inside a runtime function, add the following two lines
93 //
94 // Universe::release_fullgc_alot_dummy();
95 // MarkSweep::invoke(0, "Debugging");
96 //
97 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000
98
99
100
101
102 // Compiled code entry points
103 address OptoRuntime::_new_instance_Java = NULL;
104 address OptoRuntime::_new_array_Java = NULL;
105 address OptoRuntime::_multianewarray2_Java = NULL;
106 address OptoRuntime::_multianewarray3_Java = NULL;
107 address OptoRuntime::_multianewarray4_Java = NULL;
108 address OptoRuntime::_multianewarray5_Java = NULL;
109 address OptoRuntime::_g1_wb_pre_Java = NULL;
110 address OptoRuntime::_g1_wb_post_Java = NULL;
111 address OptoRuntime::_vtable_must_compile_Java = NULL;
112 address OptoRuntime::_complete_monitor_locking_Java = NULL;
113 address OptoRuntime::_rethrow_Java = NULL;
114
115 address OptoRuntime::_slow_arraycopy_Java = NULL;
116 address OptoRuntime::_register_finalizer_Java = NULL;
117
118 # ifdef ENABLE_ZAP_DEAD_LOCALS
119 address OptoRuntime::_zap_dead_Java_locals_Java = NULL;
120 address OptoRuntime::_zap_dead_native_locals_Java = NULL;
121 # endif
122
123
124 // This should be called in an assertion at the start of OptoRuntime routines
125 // which are entered from compiled code (all of them)
126 #ifndef PRODUCT
127 static bool check_compiled_frame(JavaThread* thread) {
128 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code");
129 #ifdef ASSERT
130 RegisterMap map(thread, false);
131 frame caller = thread->last_frame().sender(&map);
132 assert(caller.is_compiled_frame(), "not being called from compiled like code");
133 #endif /* ASSERT */
134 return true;
135 }
136 #endif
137
138
139 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \
140 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc)
141
142 void OptoRuntime::generate(ciEnv* env) {
143
144 generate_exception_blob();
145
146 // Note: tls: Means fetching the return oop out of the thread-local storage
147 //
148 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc
149 // -------------------------------------------------------------------------------------------------------------------------------
150 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false);
151 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false);
152 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false);
153 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false);
154 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false);
155 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false);
156 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false);
157 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false);
158 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false);
159 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true );
160
161 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false);
162 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false);
163
164 # ifdef ENABLE_ZAP_DEAD_LOCALS
165 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false );
166 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false );
167 # endif
168
169 }
170
171 #undef gen
172
173
174 // Helper method to do generation of RunTimeStub's
175 address OptoRuntime::generate_stub( ciEnv* env,
176 TypeFunc_generator gen, address C_function,
177 const char *name, int is_fancy_jump,
178 bool pass_tls,
179 bool save_argument_registers,
180 bool return_pc ) {
181 ResourceMark rm;
182 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc );
183 return C.stub_entry_point();
184 }
185
186 const char* OptoRuntime::stub_name(address entry) {
187 #ifndef PRODUCT
188 CodeBlob* cb = CodeCache::find_blob(entry);
189 RuntimeStub* rs =(RuntimeStub *)cb;
190 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub");
191 return rs->name();
192 #else
193 // Fast implementation for product mode (maybe it should be inlined too)
194 return "runtime stub";
195 #endif
196 }
197
198
199 //=============================================================================
200 // Opto compiler runtime routines
201 //=============================================================================
202
203
204 //=============================allocation======================================
205 // We failed the fast-path allocation. Now we need to do a scavenge or GC
206 // and try allocation again.
207
208 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) {
209 // After any safepoint, just before going back to compiled code,
210 // we inform the GC that we will be doing initializing writes to
211 // this object in the future without emitting card-marks, so
212 // GC may take any compensating steps.
213 // NOTE: Keep this code consistent with GraphKit::store_barrier.
214
215 oop new_obj = thread->vm_result();
216 if (new_obj == NULL) return;
217
218 assert(Universe::heap()->can_elide_tlab_store_barriers(),
219 "compiler must check this first");
220 // GC may decide to give back a safer copy of new_obj.
221 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
222 thread->set_vm_result(new_obj);
223 }
224
225 // object allocation
226 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread))
227 JRT_BLOCK;
228 #ifndef PRODUCT
229 SharedRuntime::_new_instance_ctr++; // new instance requires GC
230 #endif
231 assert(check_compiled_frame(thread), "incorrect caller");
232
233 // These checks are cheap to make and support reflective allocation.
234 int lh = Klass::cast(klass)->layout_helper();
235 if (Klass::layout_helper_needs_slow_path(lh)
236 || !instanceKlass::cast(klass)->is_initialized()) {
237 KlassHandle kh(THREAD, klass);
238 kh->check_valid_for_instantiation(false, THREAD);
239 if (!HAS_PENDING_EXCEPTION) {
240 instanceKlass::cast(kh())->initialize(THREAD);
241 }
242 if (!HAS_PENDING_EXCEPTION) {
243 klass = kh();
244 } else {
245 klass = NULL;
246 }
247 }
248
249 if (klass != NULL) {
250 // Scavenge and allocate an instance.
251 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD);
252 thread->set_vm_result(result);
253
254 // Pass oops back through thread local storage. Our apparent type to Java
255 // is that we return an oop, but we can block on exit from this routine and
256 // a GC can trash the oop in C's return register. The generated stub will
257 // fetch the oop from TLS after any possible GC.
258 }
259
260 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
261 JRT_BLOCK_END;
262
263 if (GraphKit::use_ReduceInitialCardMarks()) {
264 // inform GC that we won't do card marks for initializing writes.
265 new_store_pre_barrier(thread);
266 }
267 JRT_END
268
269
270 // array allocation
271 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread))
272 JRT_BLOCK;
273 #ifndef PRODUCT
274 SharedRuntime::_new_array_ctr++; // new array requires GC
275 #endif
276 assert(check_compiled_frame(thread), "incorrect caller");
277
278 // Scavenge and allocate an instance.
279 oop result;
280
281 if (Klass::cast(array_type)->oop_is_typeArray()) {
282 // The oopFactory likes to work with the element type.
283 // (We could bypass the oopFactory, since it doesn't add much value.)
284 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
285 result = oopFactory::new_typeArray(elem_type, len, THREAD);
286 } else {
287 // Although the oopFactory likes to work with the elem_type,
288 // the compiler prefers the array_type, since it must already have
289 // that latter value in hand for the fast path.
290 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass();
291 result = oopFactory::new_objArray(elem_type, len, THREAD);
292 }
293
294 // Pass oops back through thread local storage. Our apparent type to Java
295 // is that we return an oop, but we can block on exit from this routine and
296 // a GC can trash the oop in C's return register. The generated stub will
297 // fetch the oop from TLS after any possible GC.
298 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
299 thread->set_vm_result(result);
300 JRT_BLOCK_END;
301
302 if (GraphKit::use_ReduceInitialCardMarks()) {
303 // inform GC that we won't do card marks for initializing writes.
304 new_store_pre_barrier(thread);
305 }
306 JRT_END
307
308 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array.
309
310 // multianewarray for 2 dimensions
311 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread))
312 #ifndef PRODUCT
313 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension
314 #endif
315 assert(check_compiled_frame(thread), "incorrect caller");
316 assert(oop(elem_type)->is_klass(), "not a class");
317 jint dims[2];
318 dims[0] = len1;
319 dims[1] = len2;
320 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD);
321 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
322 thread->set_vm_result(obj);
323 JRT_END
324
325 // multianewarray for 3 dimensions
326 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread))
327 #ifndef PRODUCT
328 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension
329 #endif
330 assert(check_compiled_frame(thread), "incorrect caller");
331 assert(oop(elem_type)->is_klass(), "not a class");
332 jint dims[3];
333 dims[0] = len1;
334 dims[1] = len2;
335 dims[2] = len3;
336 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD);
337 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
338 thread->set_vm_result(obj);
339 JRT_END
340
341 // multianewarray for 4 dimensions
342 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread))
343 #ifndef PRODUCT
344 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension
345 #endif
346 assert(check_compiled_frame(thread), "incorrect caller");
347 assert(oop(elem_type)->is_klass(), "not a class");
348 jint dims[4];
349 dims[0] = len1;
350 dims[1] = len2;
351 dims[2] = len3;
352 dims[3] = len4;
353 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD);
354 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
355 thread->set_vm_result(obj);
356 JRT_END
357
358 // multianewarray for 5 dimensions
359 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread))
360 #ifndef PRODUCT
361 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension
362 #endif
363 assert(check_compiled_frame(thread), "incorrect caller");
364 assert(oop(elem_type)->is_klass(), "not a class");
365 jint dims[5];
366 dims[0] = len1;
367 dims[1] = len2;
368 dims[2] = len3;
369 dims[3] = len4;
370 dims[4] = len5;
371 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD);
372 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
373 thread->set_vm_result(obj);
374 JRT_END
375
376 const TypeFunc *OptoRuntime::new_instance_Type() {
377 // create input type (domain)
378 const Type **fields = TypeTuple::fields(1);
379 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
380 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
381
382 // create result type (range)
383 fields = TypeTuple::fields(1);
384 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
385
386 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
387
388 return TypeFunc::make(domain, range);
389 }
390
391
392 const TypeFunc *OptoRuntime::athrow_Type() {
393 // create input type (domain)
394 const Type **fields = TypeTuple::fields(1);
395 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated
396 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
397
398 // create result type (range)
399 fields = TypeTuple::fields(0);
400
401 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
402
403 return TypeFunc::make(domain, range);
404 }
405
406
407 const TypeFunc *OptoRuntime::new_array_Type() {
408 // create input type (domain)
409 const Type **fields = TypeTuple::fields(2);
410 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
411 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size
412 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
413
414 // create result type (range)
415 fields = TypeTuple::fields(1);
416 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
417
418 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
419
420 return TypeFunc::make(domain, range);
421 }
422
423 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) {
424 // create input type (domain)
425 const int nargs = ndim + 1;
426 const Type **fields = TypeTuple::fields(nargs);
427 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass
428 for( int i = 1; i < nargs; i++ )
429 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size
430 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields);
431
432 // create result type (range)
433 fields = TypeTuple::fields(1);
434 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop
435 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
436
437 return TypeFunc::make(domain, range);
438 }
439
440 const TypeFunc *OptoRuntime::multianewarray2_Type() {
441 return multianewarray_Type(2);
442 }
443
444 const TypeFunc *OptoRuntime::multianewarray3_Type() {
445 return multianewarray_Type(3);
446 }
447
448 const TypeFunc *OptoRuntime::multianewarray4_Type() {
449 return multianewarray_Type(4);
450 }
451
452 const TypeFunc *OptoRuntime::multianewarray5_Type() {
453 return multianewarray_Type(5);
454 }
455
456 const TypeFunc *OptoRuntime::g1_wb_pre_Type() {
457 const Type **fields = TypeTuple::fields(2);
458 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value
459 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
460 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
461
462 // create result type (range)
463 fields = TypeTuple::fields(0);
464 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
465
466 return TypeFunc::make(domain, range);
467 }
468
469 const TypeFunc *OptoRuntime::g1_wb_post_Type() {
470
471 const Type **fields = TypeTuple::fields(2);
472 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr
473 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread
474 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
475
476 // create result type (range)
477 fields = TypeTuple::fields(0);
478 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
479
480 return TypeFunc::make(domain, range);
481 }
482
483 const TypeFunc *OptoRuntime::uncommon_trap_Type() {
484 // create input type (domain)
485 const Type **fields = TypeTuple::fields(1);
486 // Symbol* name of class to be loaded
487 fields[TypeFunc::Parms+0] = TypeInt::INT;
488 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
489
490 // create result type (range)
491 fields = TypeTuple::fields(0);
492 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields);
493
494 return TypeFunc::make(domain, range);
495 }
496
497 # ifdef ENABLE_ZAP_DEAD_LOCALS
498 // Type used for stub generation for zap_dead_locals.
499 // No inputs or outputs
500 const TypeFunc *OptoRuntime::zap_dead_locals_Type() {
501 // create input type (domain)
502 const Type **fields = TypeTuple::fields(0);
503 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields);
504
505 // create result type (range)
506 fields = TypeTuple::fields(0);
507 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields);
508
509 return TypeFunc::make(domain,range);
510 }
511 # endif
512
513
514 //-----------------------------------------------------------------------------
515 // Monitor Handling
516 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() {
517 // create input type (domain)
518 const Type **fields = TypeTuple::fields(2);
519 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
520 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
521 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
522
523 // create result type (range)
524 fields = TypeTuple::fields(0);
525
526 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
527
528 return TypeFunc::make(domain,range);
529 }
530
531
532 //-----------------------------------------------------------------------------
533 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() {
534 // create input type (domain)
535 const Type **fields = TypeTuple::fields(2);
536 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked
537 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock
538 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
539
540 // create result type (range)
541 fields = TypeTuple::fields(0);
542
543 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
544
545 return TypeFunc::make(domain,range);
546 }
547
548 const TypeFunc* OptoRuntime::flush_windows_Type() {
549 // create input type (domain)
550 const Type** fields = TypeTuple::fields(1);
551 fields[TypeFunc::Parms+0] = NULL; // void
552 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields);
553
554 // create result type
555 fields = TypeTuple::fields(1);
556 fields[TypeFunc::Parms+0] = NULL; // void
557 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
558
559 return TypeFunc::make(domain, range);
560 }
561
562 const TypeFunc* OptoRuntime::l2f_Type() {
563 // create input type (domain)
564 const Type **fields = TypeTuple::fields(2);
565 fields[TypeFunc::Parms+0] = TypeLong::LONG;
566 fields[TypeFunc::Parms+1] = Type::HALF;
567 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
568
569 // create result type (range)
570 fields = TypeTuple::fields(1);
571 fields[TypeFunc::Parms+0] = Type::FLOAT;
572 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
573
574 return TypeFunc::make(domain, range);
575 }
576
577 const TypeFunc* OptoRuntime::modf_Type() {
578 const Type **fields = TypeTuple::fields(2);
579 fields[TypeFunc::Parms+0] = Type::FLOAT;
580 fields[TypeFunc::Parms+1] = Type::FLOAT;
581 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
582
583 // create result type (range)
584 fields = TypeTuple::fields(1);
585 fields[TypeFunc::Parms+0] = Type::FLOAT;
586
587 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
588
589 return TypeFunc::make(domain, range);
590 }
591
592 const TypeFunc *OptoRuntime::Math_D_D_Type() {
593 // create input type (domain)
594 const Type **fields = TypeTuple::fields(2);
595 // Symbol* name of class to be loaded
596 fields[TypeFunc::Parms+0] = Type::DOUBLE;
597 fields[TypeFunc::Parms+1] = Type::HALF;
598 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
599
600 // create result type (range)
601 fields = TypeTuple::fields(2);
602 fields[TypeFunc::Parms+0] = Type::DOUBLE;
603 fields[TypeFunc::Parms+1] = Type::HALF;
604 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
605
606 return TypeFunc::make(domain, range);
607 }
608
609 const TypeFunc* OptoRuntime::Math_DD_D_Type() {
610 const Type **fields = TypeTuple::fields(4);
611 fields[TypeFunc::Parms+0] = Type::DOUBLE;
612 fields[TypeFunc::Parms+1] = Type::HALF;
613 fields[TypeFunc::Parms+2] = Type::DOUBLE;
614 fields[TypeFunc::Parms+3] = Type::HALF;
615 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields);
616
617 // create result type (range)
618 fields = TypeTuple::fields(2);
619 fields[TypeFunc::Parms+0] = Type::DOUBLE;
620 fields[TypeFunc::Parms+1] = Type::HALF;
621 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
622
623 return TypeFunc::make(domain, range);
624 }
625
626 //-------------- currentTimeMillis
627
628 const TypeFunc* OptoRuntime::current_time_millis_Type() {
629 // create input type (domain)
630 const Type **fields = TypeTuple::fields(0);
631 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields);
632
633 // create result type (range)
634 fields = TypeTuple::fields(2);
635 fields[TypeFunc::Parms+0] = TypeLong::LONG;
636 fields[TypeFunc::Parms+1] = Type::HALF;
637 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields);
638
639 return TypeFunc::make(domain, range);
640 }
641
642 // arraycopy stub variations:
643 enum ArrayCopyType {
644 ac_fast, // void(ptr, ptr, size_t)
645 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr)
646 ac_slow, // void(ptr, int, ptr, int, int)
647 ac_generic // int(ptr, int, ptr, int, int)
648 };
649
650 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) {
651 // create input type (domain)
652 int num_args = (act == ac_fast ? 3 : 5);
653 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0);
654 int argcnt = num_args;
655 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths
656 const Type** fields = TypeTuple::fields(argcnt);
657 int argp = TypeFunc::Parms;
658 fields[argp++] = TypePtr::NOTNULL; // src
659 if (num_size_args == 0) {
660 fields[argp++] = TypeInt::INT; // src_pos
661 }
662 fields[argp++] = TypePtr::NOTNULL; // dest
663 if (num_size_args == 0) {
664 fields[argp++] = TypeInt::INT; // dest_pos
665 fields[argp++] = TypeInt::INT; // length
666 }
667 while (num_size_args-- > 0) {
668 fields[argp++] = TypeX_X; // size in whatevers (size_t)
669 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
670 }
671 if (act == ac_checkcast) {
672 fields[argp++] = TypePtr::NOTNULL; // super_klass
673 }
674 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act");
675 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields);
676
677 // create result type if needed
678 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0);
679 fields = TypeTuple::fields(1);
680 if (retcnt == 0)
681 fields[TypeFunc::Parms+0] = NULL; // void
682 else
683 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed
684 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields);
685 return TypeFunc::make(domain, range);
686 }
687
688 const TypeFunc* OptoRuntime::fast_arraycopy_Type() {
689 // This signature is simple: Two base pointers and a size_t.
690 return make_arraycopy_Type(ac_fast);
691 }
692
693 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() {
694 // An extension of fast_arraycopy_Type which adds type checking.
695 return make_arraycopy_Type(ac_checkcast);
696 }
697
698 const TypeFunc* OptoRuntime::slow_arraycopy_Type() {
699 // This signature is exactly the same as System.arraycopy.
700 // There are no intptr_t (int/long) arguments.
701 return make_arraycopy_Type(ac_slow);
702 }
703
704 const TypeFunc* OptoRuntime::generic_arraycopy_Type() {
705 // This signature is like System.arraycopy, except that it returns status.
706 return make_arraycopy_Type(ac_generic);
707 }
708
709
710 const TypeFunc* OptoRuntime::array_fill_Type() {
711 // create input type (domain): pointer, int, size_t
712 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1));
713 int argp = TypeFunc::Parms;
714 fields[argp++] = TypePtr::NOTNULL;
715 fields[argp++] = TypeInt::INT;
716 fields[argp++] = TypeX_X; // size in whatevers (size_t)
717 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length
718 const TypeTuple *domain = TypeTuple::make(argp, fields);
719
720 // create result type
721 fields = TypeTuple::fields(1);
722 fields[TypeFunc::Parms+0] = NULL; // void
723 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
724
725 return TypeFunc::make(domain, range);
726 }
727
728 //------------- Interpreter state access for on stack replacement
729 const TypeFunc* OptoRuntime::osr_end_Type() {
730 // create input type (domain)
731 const Type **fields = TypeTuple::fields(1);
732 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf
733 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields);
734
735 // create result type
736 fields = TypeTuple::fields(1);
737 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop
738 fields[TypeFunc::Parms+0] = NULL; // void
739 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
740 return TypeFunc::make(domain, range);
741 }
742
743 //-------------- methodData update helpers
744
745 const TypeFunc* OptoRuntime::profile_receiver_type_Type() {
746 // create input type (domain)
747 const Type **fields = TypeTuple::fields(2);
748 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer
749 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop
750 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields);
751
752 // create result type
753 fields = TypeTuple::fields(1);
754 fields[TypeFunc::Parms+0] = NULL; // void
755 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields);
756 return TypeFunc::make(domain,range);
757 }
758
759 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver))
760 if (receiver == NULL) return;
761 klassOop receiver_klass = receiver->klass();
762
763 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells();
764 int empty_row = -1; // free row, if any is encountered
765
766 // ReceiverTypeData* vc = new ReceiverTypeData(mdp);
767 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) {
768 // if (vc->receiver(row) == receiver_klass)
769 int receiver_off = ReceiverTypeData::receiver_cell_index(row);
770 intptr_t row_recv = *(mdp + receiver_off);
771 if (row_recv == (intptr_t) receiver_klass) {
772 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment);
773 int count_off = ReceiverTypeData::receiver_count_cell_index(row);
774 *(mdp + count_off) += DataLayout::counter_increment;
775 return;
776 } else if (row_recv == 0) {
777 // else if (vc->receiver(row) == NULL)
778 empty_row = (int) row;
779 }
780 }
781
782 if (empty_row != -1) {
783 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row);
784 // vc->set_receiver(empty_row, receiver_klass);
785 *(mdp + receiver_off) = (intptr_t) receiver_klass;
786 // vc->set_receiver_count(empty_row, DataLayout::counter_increment);
787 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row);
788 *(mdp + count_off) = DataLayout::counter_increment;
789 } else {
790 // Receiver did not match any saved receiver and there is no empty row for it.
791 // Increment total counter to indicate polymorphic case.
792 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset()));
793 *count_p += DataLayout::counter_increment;
794 }
795 JRT_END
796
797 //-----------------------------------------------------------------------------
798 // implicit exception support.
799
800 static void report_null_exception_in_code_cache(address exception_pc) {
801 ResourceMark rm;
802 CodeBlob* n = CodeCache::find_blob(exception_pc);
803 if (n != NULL) {
804 tty->print_cr("#");
805 tty->print_cr("# HotSpot Runtime Error, null exception in generated code");
806 tty->print_cr("#");
807 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc);
808
809 if (n->is_nmethod()) {
810 methodOop method = ((nmethod*)n)->method();
811 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string());
812 tty->print_cr("#");
813 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) {
814 const char* title = "HotSpot Runtime Error";
815 const char* question = "Do you want to exclude compilation of this method in future runs?";
816 if (os::message_box(title, question)) {
817 CompilerOracle::append_comment_to_file("");
818 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude");
819 CompilerOracle::append_comment_to_file("");
820 CompilerOracle::append_exclude_to_file(method);
821 tty->print_cr("#");
822 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile);
823 tty->print_cr("#");
824 }
825 }
826 fatal("Implicit null exception happened in compiled method");
827 } else {
828 n->print();
829 fatal("Implicit null exception happened in generated stub");
830 }
831 }
832 fatal("Implicit null exception at wrong place");
833 }
834
835
836 //-------------------------------------------------------------------------------------
837 // register policy
838
839 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) {
840 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register");
841 switch (register_save_policy[reg]) {
842 case 'C': return false; //SOC
843 case 'E': return true ; //SOE
844 case 'N': return false; //NS
845 case 'A': return false; //AS
846 }
847 ShouldNotReachHere();
848 return false;
849 }
850
851 //-----------------------------------------------------------------------
852 // Exceptions
853 //
854
855 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN;
856
857 // The method is an entry that is always called by a C++ method not
858 // directly from compiled code. Compiled code will call the C++ method following.
859 // We can't allow async exception to be installed during exception processing.
860 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm))
861
862 // Do not confuse exception_oop with pending_exception. The exception_oop
863 // is only used to pass arguments into the method. Not for general
864 // exception handling. DO NOT CHANGE IT to use pending_exception, since
865 // the runtime stubs checks this on exit.
866 assert(thread->exception_oop() != NULL, "exception oop is found");
867 address handler_address = NULL;
868
869 Handle exception(thread, thread->exception_oop());
870
871 if (TraceExceptions) {
872 trace_exception(exception(), thread->exception_pc(), "");
873 }
874 // for AbortVMOnException flag
875 NOT_PRODUCT(Exceptions::debug_check_abort(exception));
876
877 #ifdef ASSERT
878 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
879 // should throw an exception here
880 ShouldNotReachHere();
881 }
882 #endif
883
884
885 // new exception handling: this method is entered only from adapters
886 // exceptions from compiled java methods are handled in compiled code
887 // using rethrow node
888
889 address pc = thread->exception_pc();
890 nm = CodeCache::find_nmethod(pc);
891 assert(nm != NULL, "No NMethod found");
892 if (nm->is_native_method()) {
893 fatal("Native mathod should not have path to exception handling");
894 } else {
895 // we are switching to old paradigm: search for exception handler in caller_frame
896 // instead in exception handler of caller_frame.sender()
897
898 if (JvmtiExport::can_post_on_exceptions()) {
899 // "Full-speed catching" is not necessary here,
900 // since we're notifying the VM on every catch.
901 // Force deoptimization and the rest of the lookup
902 // will be fine.
903 deoptimize_caller_frame(thread, true);
904 }
905
906 // Check the stack guard pages. If enabled, look for handler in this frame;
907 // otherwise, forcibly unwind the frame.
908 //
909 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate.
910 bool force_unwind = !thread->reguard_stack();
911 bool deopting = false;
912 if (nm->is_deopt_pc(pc)) {
913 deopting = true;
914 RegisterMap map(thread, false);
915 frame deoptee = thread->last_frame().sender(&map);
916 assert(deoptee.is_deoptimized_frame(), "must be deopted");
917 // Adjust the pc back to the original throwing pc
918 pc = deoptee.pc();
919 }
920
921 // If we are forcing an unwind because of stack overflow then deopt is
922 // irrelevant sice we are throwing the frame away anyway.
923
924 if (deopting && !force_unwind) {
925 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
926 } else {
927
928 handler_address =
929 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
930
931 if (handler_address == NULL) {
932 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
933 assert (handler_address != NULL, "must have compiled handler");
934 // Update the exception cache only when the unwind was not forced.
935 if (!force_unwind) {
936 nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
937 }
938 } else {
939 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
940 }
941 }
942
943 thread->set_exception_pc(pc);
944 thread->set_exception_handler_pc(handler_address);
945 thread->set_exception_stack_size(0);
946
947 // Check if the exception PC is a MethodHandle call site.
948 thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
949 }
950
951 // Restore correct return pc. Was saved above.
952 thread->set_exception_oop(exception());
953 return handler_address;
954
955 JRT_END
956
957 // We are entering here from exception_blob
958 // If there is a compiled exception handler in this method, we will continue there;
959 // otherwise we will unwind the stack and continue at the caller of top frame method
960 // Note we enter without the usual JRT wrapper. We will call a helper routine that
961 // will do the normal VM entry. We do it this way so that we can see if the nmethod
962 // we looked up the handler for has been deoptimized in the meantime. If it has been
963 // we must not use the handler and instread return the deopt blob.
964 address OptoRuntime::handle_exception_C(JavaThread* thread) {
965 //
966 // We are in Java not VM and in debug mode we have a NoHandleMark
967 //
968 #ifndef PRODUCT
969 SharedRuntime::_find_handler_ctr++; // find exception handler
970 #endif
971 debug_only(NoHandleMark __hm;)
972 nmethod* nm = NULL;
973 address handler_address = NULL;
974 {
975 // Enter the VM
976
977 ResetNoHandleMark rnhm;
978 handler_address = handle_exception_C_helper(thread, nm);
979 }
980
981 // Back in java: Use no oops, DON'T safepoint
982
983 // Now check to see if the handler we are returning is in a now
984 // deoptimized frame
985
986 if (nm != NULL) {
987 RegisterMap map(thread, false);
988 frame caller = thread->last_frame().sender(&map);
989 #ifdef ASSERT
990 assert(caller.is_compiled_frame(), "must be");
991 #endif // ASSERT
992 if (caller.is_deoptimized_frame()) {
993 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception();
994 }
995 }
996 return handler_address;
997 }
998
999 //------------------------------rethrow----------------------------------------
1000 // We get here after compiled code has executed a 'RethrowNode'. The callee
1001 // is either throwing or rethrowing an exception. The callee-save registers
1002 // have been restored, synchronized objects have been unlocked and the callee
1003 // stack frame has been removed. The return address was passed in.
1004 // Exception oop is passed as the 1st argument. This routine is then called
1005 // from the stub. On exit, we know where to jump in the caller's code.
1006 // After this C code exits, the stub will pop his frame and end in a jump
1007 // (instead of a return). We enter the caller's default handler.
1008 //
1009 // This must be JRT_LEAF:
1010 // - caller will not change its state as we cannot block on exit,
1011 // therefore raw_exception_handler_for_return_address is all it takes
1012 // to handle deoptimized blobs
1013 //
1014 // However, there needs to be a safepoint check in the middle! So compiled
1015 // safepoints are completely watertight.
1016 //
1017 // Thus, it cannot be a leaf since it contains the No_GC_Verifier.
1018 //
1019 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE*
1020 //
1021 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) {
1022 #ifndef PRODUCT
1023 SharedRuntime::_rethrow_ctr++; // count rethrows
1024 #endif
1025 assert (exception != NULL, "should have thrown a NULLPointerException");
1026 #ifdef ASSERT
1027 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
1028 // should throw an exception here
1029 ShouldNotReachHere();
1030 }
1031 #endif
1032
1033 thread->set_vm_result(exception);
1034 // Frame not compiled (handles deoptimization blob)
1035 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc);
1036 }
1037
1038
1039 const TypeFunc *OptoRuntime::rethrow_Type() {
1040 // create input type (domain)
1041 const Type **fields = TypeTuple::fields(1);
1042 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1043 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1044
1045 // create result type (range)
1046 fields = TypeTuple::fields(1);
1047 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop
1048 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields);
1049
1050 return TypeFunc::make(domain, range);
1051 }
1052
1053
1054 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) {
1055 // Deoptimize frame
1056 if (doit) {
1057 // Called from within the owner thread, so no need for safepoint
1058 RegisterMap reg_map(thread);
1059 frame stub_frame = thread->last_frame();
1060 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check");
1061 frame caller_frame = stub_frame.sender(®_map);
1062
1063 // bypass VM_DeoptimizeFrame and deoptimize the frame directly
1064 Deoptimization::deoptimize_frame(thread, caller_frame.id());
1065 }
1066 }
1067
1068
1069 const TypeFunc *OptoRuntime::register_finalizer_Type() {
1070 // create input type (domain)
1071 const Type **fields = TypeTuple::fields(1);
1072 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver
1073 // // The JavaThread* is passed to each routine as the last argument
1074 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread
1075 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields);
1076
1077 // create result type (range)
1078 fields = TypeTuple::fields(0);
1079
1080 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1081
1082 return TypeFunc::make(domain,range);
1083 }
1084
1085
1086 //-----------------------------------------------------------------------------
1087 // Dtrace support. entry and exit probes have the same signature
1088 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() {
1089 // create input type (domain)
1090 const Type **fields = TypeTuple::fields(2);
1091 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1092 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering
1093 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1094
1095 // create result type (range)
1096 fields = TypeTuple::fields(0);
1097
1098 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1099
1100 return TypeFunc::make(domain,range);
1101 }
1102
1103 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() {
1104 // create input type (domain)
1105 const Type **fields = TypeTuple::fields(2);
1106 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage
1107 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object
1108
1109 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields);
1110
1111 // create result type (range)
1112 fields = TypeTuple::fields(0);
1113
1114 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields);
1115
1116 return TypeFunc::make(domain,range);
1117 }
1118
1119
1120 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread))
1121 assert(obj->is_oop(), "must be a valid oop");
1122 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
1123 instanceKlass::register_finalizer(instanceOop(obj), CHECK);
1124 JRT_END
1125
1126 //-----------------------------------------------------------------------------
1127
1128 NamedCounter * volatile OptoRuntime::_named_counters = NULL;
1129
1130 //
1131 // dump the collected NamedCounters.
1132 //
1133 void OptoRuntime::print_named_counters() {
1134 int total_lock_count = 0;
1135 int eliminated_lock_count = 0;
1136
1137 NamedCounter* c = _named_counters;
1138 while (c) {
1139 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) {
1140 int count = c->count();
1141 if (count > 0) {
1142 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter;
1143 if (Verbose) {
1144 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : "");
1145 }
1146 total_lock_count += count;
1147 if (eliminated) {
1148 eliminated_lock_count += count;
1149 }
1150 }
1151 } else if (c->tag() == NamedCounter::BiasedLockingCounter) {
1152 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters();
1153 if (blc->nonzero()) {
1154 tty->print_cr("%s", c->name());
1155 blc->print_on(tty);
1156 }
1157 }
1158 c = c->next();
1159 }
1160 if (total_lock_count > 0) {
1161 tty->print_cr("dynamic locks: %d", total_lock_count);
1162 if (eliminated_lock_count) {
1163 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count,
1164 (int)(eliminated_lock_count * 100.0 / total_lock_count));
1165 }
1166 }
1167 }
1168
1169 //
1170 // Allocate a new NamedCounter. The JVMState is used to generate the
1171 // name which consists of method@line for the inlining tree.
1172 //
1173
1174 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) {
1175 int max_depth = youngest_jvms->depth();
1176
1177 // Visit scopes from youngest to oldest.
1178 bool first = true;
1179 stringStream st;
1180 for (int depth = max_depth; depth >= 1; depth--) {
1181 JVMState* jvms = youngest_jvms->of_depth(depth);
1182 ciMethod* m = jvms->has_method() ? jvms->method() : NULL;
1183 if (!first) {
1184 st.print(" ");
1185 } else {
1186 first = false;
1187 }
1188 int bci = jvms->bci();
1189 if (bci < 0) bci = 0;
1190 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci);
1191 // To print linenumbers instead of bci use: m->line_number_from_bci(bci)
1192 }
1193 NamedCounter* c;
1194 if (tag == NamedCounter::BiasedLockingCounter) {
1195 c = new BiasedLockingNamedCounter(strdup(st.as_string()));
1196 } else {
1197 c = new NamedCounter(strdup(st.as_string()), tag);
1198 }
1199
1200 // atomically add the new counter to the head of the list. We only
1201 // add counters so this is safe.
1202 NamedCounter* head;
1203 do {
1204 head = _named_counters;
1205 c->set_next(head);
1206 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head);
1207 return c;
1208 }
1209
1210 //-----------------------------------------------------------------------------
1211 // Non-product code
1212 #ifndef PRODUCT
1213
1214 int trace_exception_counter = 0;
1215 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) {
1216 ttyLocker ttyl;
1217 trace_exception_counter++;
1218 tty->print("%d [Exception (%s): ", trace_exception_counter, msg);
1219 exception_oop->print_value();
1220 tty->print(" in ");
1221 CodeBlob* blob = CodeCache::find_blob(exception_pc);
1222 if (blob->is_nmethod()) {
1223 ((nmethod*)blob)->method()->print_value();
1224 } else if (blob->is_runtime_stub()) {
1225 tty->print("<runtime-stub>");
1226 } else {
1227 tty->print("<unknown>");
1228 }
1229 tty->print(" at " INTPTR_FORMAT, exception_pc);
1230 tty->print_cr("]");
1231 }
1232
1233 #endif // PRODUCT
1234
1235
1236 # ifdef ENABLE_ZAP_DEAD_LOCALS
1237 // Called from call sites in compiled code with oop maps (actually safepoints)
1238 // Zaps dead locals in first java frame.
1239 // Is entry because may need to lock to generate oop maps
1240 // Currently, only used for compiler frames, but someday may be used
1241 // for interpreter frames, too.
1242
1243 int OptoRuntime::ZapDeadCompiledLocals_count = 0;
1244
1245 // avoid pointers to member funcs with these helpers
1246 static bool is_java_frame( frame* f) { return f->is_java_frame(); }
1247 static bool is_native_frame(frame* f) { return f->is_native_frame(); }
1248
1249
1250 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread,
1251 bool (*is_this_the_right_frame_to_zap)(frame*)) {
1252 assert(JavaThread::current() == thread, "is this needed?");
1253
1254 if ( !ZapDeadCompiledLocals ) return;
1255
1256 bool skip = false;
1257
1258 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special
1259 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true;
1260 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count )
1261 warning("starting zapping after skipping");
1262
1263 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special
1264 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true;
1265 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count )
1266 warning("about to zap last zap");
1267
1268 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too
1269
1270 if ( skip ) return;
1271
1272 // find java frame and zap it
1273
1274 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) {
1275 if (is_this_the_right_frame_to_zap(sfs.current()) ) {
1276 sfs.current()->zap_dead_locals(thread, sfs.register_map());
1277 return;
1278 }
1279 }
1280 warning("no frame found to zap in zap_dead_Java_locals_C");
1281 }
1282
1283 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread))
1284 zap_dead_java_or_native_locals(thread, is_java_frame);
1285 JRT_END
1286
1287 // The following does not work because for one thing, the
1288 // thread state is wrong; it expects java, but it is native.
1289 // Also, the invariants in a native stub are different and
1290 // I'm not sure it is safe to have a MachCalRuntimeDirectNode
1291 // in there.
1292 // So for now, we do not zap in native stubs.
1293
1294 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread))
1295 zap_dead_java_or_native_locals(thread, is_native_frame);
1296 JRT_END
1297
1298 # endif