Mercurial > hg > truffle
annotate src/share/vm/opto/runtime.cpp @ 3961:a92cdbac8b9e
7081933: Use zeroing elimination optimization for large array
Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti
author | kvn |
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date | Mon, 26 Sep 2011 10:24:05 -0700 |
parents | c124e2e7463e |
children | ec5ce9326985 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
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83 #ifdef TARGET_ARCH_MODEL_arm |
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84 # include "adfiles/ad_arm.hpp" |
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85 #endif |
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86 #ifdef TARGET_ARCH_MODEL_ppc |
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87 # include "adfiles/ad_ppc.hpp" |
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88 #endif |
0 | 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; | |
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105 address OptoRuntime::_new_array_nozero_Java = NULL; |
0 | 106 address OptoRuntime::_multianewarray2_Java = NULL; |
107 address OptoRuntime::_multianewarray3_Java = NULL; | |
108 address OptoRuntime::_multianewarray4_Java = NULL; | |
109 address OptoRuntime::_multianewarray5_Java = NULL; | |
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110 address OptoRuntime::_multianewarrayN_Java = NULL; |
342 | 111 address OptoRuntime::_g1_wb_pre_Java = NULL; |
112 address OptoRuntime::_g1_wb_post_Java = NULL; | |
0 | 113 address OptoRuntime::_vtable_must_compile_Java = NULL; |
114 address OptoRuntime::_complete_monitor_locking_Java = NULL; | |
115 address OptoRuntime::_rethrow_Java = NULL; | |
116 | |
117 address OptoRuntime::_slow_arraycopy_Java = NULL; | |
118 address OptoRuntime::_register_finalizer_Java = NULL; | |
119 | |
120 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
121 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; | |
122 address OptoRuntime::_zap_dead_native_locals_Java = NULL; | |
123 # endif | |
124 | |
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125 ExceptionBlob* OptoRuntime::_exception_blob; |
0 | 126 |
127 // This should be called in an assertion at the start of OptoRuntime routines | |
128 // which are entered from compiled code (all of them) | |
129 #ifndef PRODUCT | |
130 static bool check_compiled_frame(JavaThread* thread) { | |
131 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); | |
132 #ifdef ASSERT | |
133 RegisterMap map(thread, false); | |
134 frame caller = thread->last_frame().sender(&map); | |
135 assert(caller.is_compiled_frame(), "not being called from compiled like code"); | |
136 #endif /* ASSERT */ | |
137 return true; | |
138 } | |
139 #endif | |
140 | |
141 | |
142 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ | |
143 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc) | |
144 | |
145 void OptoRuntime::generate(ciEnv* env) { | |
146 | |
147 generate_exception_blob(); | |
148 | |
149 // Note: tls: Means fetching the return oop out of the thread-local storage | |
150 // | |
151 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc | |
152 // ------------------------------------------------------------------------------------------------------------------------------- | |
153 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); | |
154 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); | |
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155 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); |
0 | 156 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); |
157 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); | |
158 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); | |
159 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); | |
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160 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); |
342 | 161 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); |
162 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); | |
0 | 163 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false); |
164 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); | |
165 | |
166 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); | |
167 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); | |
168 | |
169 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
170 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); | |
171 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); | |
172 # endif | |
173 | |
174 } | |
175 | |
176 #undef gen | |
177 | |
178 | |
179 // Helper method to do generation of RunTimeStub's | |
180 address OptoRuntime::generate_stub( ciEnv* env, | |
181 TypeFunc_generator gen, address C_function, | |
182 const char *name, int is_fancy_jump, | |
183 bool pass_tls, | |
184 bool save_argument_registers, | |
185 bool return_pc ) { | |
186 ResourceMark rm; | |
187 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); | |
188 return C.stub_entry_point(); | |
189 } | |
190 | |
191 const char* OptoRuntime::stub_name(address entry) { | |
192 #ifndef PRODUCT | |
193 CodeBlob* cb = CodeCache::find_blob(entry); | |
194 RuntimeStub* rs =(RuntimeStub *)cb; | |
195 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); | |
196 return rs->name(); | |
197 #else | |
198 // Fast implementation for product mode (maybe it should be inlined too) | |
199 return "runtime stub"; | |
200 #endif | |
201 } | |
202 | |
203 | |
204 //============================================================================= | |
205 // Opto compiler runtime routines | |
206 //============================================================================= | |
207 | |
208 | |
209 //=============================allocation====================================== | |
210 // We failed the fast-path allocation. Now we need to do a scavenge or GC | |
211 // and try allocation again. | |
212 | |
1166 | 213 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { |
0 | 214 // After any safepoint, just before going back to compiled code, |
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215 // we inform the GC that we will be doing initializing writes to |
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216 // this object in the future without emitting card-marks, so |
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217 // GC may take any compensating steps. |
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218 // NOTE: Keep this code consistent with GraphKit::store_barrier. |
0 | 219 |
220 oop new_obj = thread->vm_result(); | |
221 if (new_obj == NULL) return; | |
222 | |
223 assert(Universe::heap()->can_elide_tlab_store_barriers(), | |
224 "compiler must check this first"); | |
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225 // GC may decide to give back a safer copy of new_obj. |
1166 | 226 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); |
0 | 227 thread->set_vm_result(new_obj); |
228 } | |
229 | |
230 // object allocation | |
231 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread)) | |
232 JRT_BLOCK; | |
233 #ifndef PRODUCT | |
234 SharedRuntime::_new_instance_ctr++; // new instance requires GC | |
235 #endif | |
236 assert(check_compiled_frame(thread), "incorrect caller"); | |
237 | |
238 // These checks are cheap to make and support reflective allocation. | |
239 int lh = Klass::cast(klass)->layout_helper(); | |
240 if (Klass::layout_helper_needs_slow_path(lh) | |
241 || !instanceKlass::cast(klass)->is_initialized()) { | |
242 KlassHandle kh(THREAD, klass); | |
243 kh->check_valid_for_instantiation(false, THREAD); | |
244 if (!HAS_PENDING_EXCEPTION) { | |
245 instanceKlass::cast(kh())->initialize(THREAD); | |
246 } | |
247 if (!HAS_PENDING_EXCEPTION) { | |
248 klass = kh(); | |
249 } else { | |
250 klass = NULL; | |
251 } | |
252 } | |
253 | |
254 if (klass != NULL) { | |
255 // Scavenge and allocate an instance. | |
256 oop result = instanceKlass::cast(klass)->allocate_instance(THREAD); | |
257 thread->set_vm_result(result); | |
258 | |
259 // Pass oops back through thread local storage. Our apparent type to Java | |
260 // is that we return an oop, but we can block on exit from this routine and | |
261 // a GC can trash the oop in C's return register. The generated stub will | |
262 // fetch the oop from TLS after any possible GC. | |
263 } | |
264 | |
265 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
266 JRT_BLOCK_END; | |
267 | |
268 if (GraphKit::use_ReduceInitialCardMarks()) { | |
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269 // inform GC that we won't do card marks for initializing writes. |
1166 | 270 new_store_pre_barrier(thread); |
0 | 271 } |
272 JRT_END | |
273 | |
274 | |
275 // array allocation | |
276 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread)) | |
277 JRT_BLOCK; | |
278 #ifndef PRODUCT | |
279 SharedRuntime::_new_array_ctr++; // new array requires GC | |
280 #endif | |
281 assert(check_compiled_frame(thread), "incorrect caller"); | |
282 | |
283 // Scavenge and allocate an instance. | |
284 oop result; | |
285 | |
286 if (Klass::cast(array_type)->oop_is_typeArray()) { | |
287 // The oopFactory likes to work with the element type. | |
288 // (We could bypass the oopFactory, since it doesn't add much value.) | |
289 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); | |
290 result = oopFactory::new_typeArray(elem_type, len, THREAD); | |
291 } else { | |
292 // Although the oopFactory likes to work with the elem_type, | |
293 // the compiler prefers the array_type, since it must already have | |
294 // that latter value in hand for the fast path. | |
295 klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass(); | |
296 result = oopFactory::new_objArray(elem_type, len, THREAD); | |
297 } | |
298 | |
299 // Pass oops back through thread local storage. Our apparent type to Java | |
300 // is that we return an oop, but we can block on exit from this routine and | |
301 // a GC can trash the oop in C's return register. The generated stub will | |
302 // fetch the oop from TLS after any possible GC. | |
303 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
304 thread->set_vm_result(result); | |
305 JRT_BLOCK_END; | |
306 | |
307 if (GraphKit::use_ReduceInitialCardMarks()) { | |
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308 // inform GC that we won't do card marks for initializing writes. |
1166 | 309 new_store_pre_barrier(thread); |
0 | 310 } |
311 JRT_END | |
312 | |
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313 // array allocation without zeroing |
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314 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(klassOopDesc* array_type, int len, JavaThread *thread)) |
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315 JRT_BLOCK; |
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316 #ifndef PRODUCT |
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317 SharedRuntime::_new_array_ctr++; // new array requires GC |
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318 #endif |
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319 assert(check_compiled_frame(thread), "incorrect caller"); |
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320 |
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321 // Scavenge and allocate an instance. |
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322 oop result; |
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323 |
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324 assert(Klass::cast(array_type)->oop_is_typeArray(), "should be called only for type array"); |
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325 // The oopFactory likes to work with the element type. |
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326 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); |
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327 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); |
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328 |
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329 // Pass oops back through thread local storage. Our apparent type to Java |
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330 // is that we return an oop, but we can block on exit from this routine and |
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331 // a GC can trash the oop in C's return register. The generated stub will |
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332 // fetch the oop from TLS after any possible GC. |
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333 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); |
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334 thread->set_vm_result(result); |
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335 JRT_BLOCK_END; |
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336 |
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337 if (GraphKit::use_ReduceInitialCardMarks()) { |
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338 // inform GC that we won't do card marks for initializing writes. |
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339 new_store_pre_barrier(thread); |
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340 } |
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341 JRT_END |
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342 |
0 | 343 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. |
344 | |
345 // multianewarray for 2 dimensions | |
346 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread)) | |
347 #ifndef PRODUCT | |
348 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension | |
349 #endif | |
350 assert(check_compiled_frame(thread), "incorrect caller"); | |
351 assert(oop(elem_type)->is_klass(), "not a class"); | |
352 jint dims[2]; | |
353 dims[0] = len1; | |
354 dims[1] = len2; | |
355 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); | |
356 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
357 thread->set_vm_result(obj); | |
358 JRT_END | |
359 | |
360 // multianewarray for 3 dimensions | |
361 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread)) | |
362 #ifndef PRODUCT | |
363 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension | |
364 #endif | |
365 assert(check_compiled_frame(thread), "incorrect caller"); | |
366 assert(oop(elem_type)->is_klass(), "not a class"); | |
367 jint dims[3]; | |
368 dims[0] = len1; | |
369 dims[1] = len2; | |
370 dims[2] = len3; | |
371 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); | |
372 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
373 thread->set_vm_result(obj); | |
374 JRT_END | |
375 | |
376 // multianewarray for 4 dimensions | |
377 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) | |
378 #ifndef PRODUCT | |
379 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension | |
380 #endif | |
381 assert(check_compiled_frame(thread), "incorrect caller"); | |
382 assert(oop(elem_type)->is_klass(), "not a class"); | |
383 jint dims[4]; | |
384 dims[0] = len1; | |
385 dims[1] = len2; | |
386 dims[2] = len3; | |
387 dims[3] = len4; | |
388 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); | |
389 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
390 thread->set_vm_result(obj); | |
391 JRT_END | |
392 | |
393 // multianewarray for 5 dimensions | |
394 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) | |
395 #ifndef PRODUCT | |
396 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension | |
397 #endif | |
398 assert(check_compiled_frame(thread), "incorrect caller"); | |
399 assert(oop(elem_type)->is_klass(), "not a class"); | |
400 jint dims[5]; | |
401 dims[0] = len1; | |
402 dims[1] = len2; | |
403 dims[2] = len3; | |
404 dims[3] = len4; | |
405 dims[4] = len5; | |
406 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); | |
407 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
408 thread->set_vm_result(obj); | |
409 JRT_END | |
410 | |
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411 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(klassOopDesc* elem_type, arrayOopDesc* dims, JavaThread *thread)) |
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412 assert(check_compiled_frame(thread), "incorrect caller"); |
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413 assert(oop(elem_type)->is_klass(), "not a class"); |
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414 assert(oop(dims)->is_typeArray(), "not an array"); |
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415 |
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416 ResourceMark rm; |
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417 jint len = dims->length(); |
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418 assert(len > 0, "Dimensions array should contain data"); |
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419 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); |
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420 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); |
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421 Copy::conjoint_jints_atomic(j_dims, c_dims, len); |
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422 |
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423 oop obj = arrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); |
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424 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); |
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425 thread->set_vm_result(obj); |
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426 JRT_END |
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427 |
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428 |
0 | 429 const TypeFunc *OptoRuntime::new_instance_Type() { |
430 // create input type (domain) | |
431 const Type **fields = TypeTuple::fields(1); | |
432 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated | |
433 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
434 | |
435 // create result type (range) | |
436 fields = TypeTuple::fields(1); | |
437 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
438 | |
439 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
440 | |
441 return TypeFunc::make(domain, range); | |
442 } | |
443 | |
444 | |
445 const TypeFunc *OptoRuntime::athrow_Type() { | |
446 // create input type (domain) | |
447 const Type **fields = TypeTuple::fields(1); | |
448 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated | |
449 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
450 | |
451 // create result type (range) | |
452 fields = TypeTuple::fields(0); | |
453 | |
454 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); | |
455 | |
456 return TypeFunc::make(domain, range); | |
457 } | |
458 | |
459 | |
460 const TypeFunc *OptoRuntime::new_array_Type() { | |
461 // create input type (domain) | |
462 const Type **fields = TypeTuple::fields(2); | |
463 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass | |
464 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size | |
465 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
466 | |
467 // create result type (range) | |
468 fields = TypeTuple::fields(1); | |
469 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
470 | |
471 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
472 | |
473 return TypeFunc::make(domain, range); | |
474 } | |
475 | |
476 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { | |
477 // create input type (domain) | |
478 const int nargs = ndim + 1; | |
479 const Type **fields = TypeTuple::fields(nargs); | |
480 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass | |
481 for( int i = 1; i < nargs; i++ ) | |
482 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size | |
483 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); | |
484 | |
485 // create result type (range) | |
486 fields = TypeTuple::fields(1); | |
487 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
488 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
489 | |
490 return TypeFunc::make(domain, range); | |
491 } | |
492 | |
493 const TypeFunc *OptoRuntime::multianewarray2_Type() { | |
494 return multianewarray_Type(2); | |
495 } | |
496 | |
497 const TypeFunc *OptoRuntime::multianewarray3_Type() { | |
498 return multianewarray_Type(3); | |
499 } | |
500 | |
501 const TypeFunc *OptoRuntime::multianewarray4_Type() { | |
502 return multianewarray_Type(4); | |
503 } | |
504 | |
505 const TypeFunc *OptoRuntime::multianewarray5_Type() { | |
506 return multianewarray_Type(5); | |
507 } | |
508 | |
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509 const TypeFunc *OptoRuntime::multianewarrayN_Type() { |
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510 // create input type (domain) |
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511 const Type **fields = TypeTuple::fields(2); |
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512 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass |
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513 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes |
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514 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); |
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515 |
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516 // create result type (range) |
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517 fields = TypeTuple::fields(1); |
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518 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop |
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519 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); |
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520 |
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521 return TypeFunc::make(domain, range); |
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522 } |
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523 |
342 | 524 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { |
525 const Type **fields = TypeTuple::fields(2); | |
526 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value | |
527 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread | |
528 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
529 | |
530 // create result type (range) | |
531 fields = TypeTuple::fields(0); | |
532 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); | |
533 | |
534 return TypeFunc::make(domain, range); | |
535 } | |
536 | |
537 const TypeFunc *OptoRuntime::g1_wb_post_Type() { | |
538 | |
539 const Type **fields = TypeTuple::fields(2); | |
540 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr | |
541 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread | |
542 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
543 | |
544 // create result type (range) | |
545 fields = TypeTuple::fields(0); | |
546 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
547 | |
548 return TypeFunc::make(domain, range); | |
549 } | |
550 | |
0 | 551 const TypeFunc *OptoRuntime::uncommon_trap_Type() { |
552 // create input type (domain) | |
553 const Type **fields = TypeTuple::fields(1); | |
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554 // Symbol* name of class to be loaded |
0 | 555 fields[TypeFunc::Parms+0] = TypeInt::INT; |
556 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
557 | |
558 // create result type (range) | |
559 fields = TypeTuple::fields(0); | |
560 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); | |
561 | |
562 return TypeFunc::make(domain, range); | |
563 } | |
564 | |
565 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
566 // Type used for stub generation for zap_dead_locals. | |
567 // No inputs or outputs | |
568 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { | |
569 // create input type (domain) | |
570 const Type **fields = TypeTuple::fields(0); | |
571 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); | |
572 | |
573 // create result type (range) | |
574 fields = TypeTuple::fields(0); | |
575 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); | |
576 | |
577 return TypeFunc::make(domain,range); | |
578 } | |
579 # endif | |
580 | |
581 | |
582 //----------------------------------------------------------------------------- | |
583 // Monitor Handling | |
584 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { | |
585 // create input type (domain) | |
586 const Type **fields = TypeTuple::fields(2); | |
587 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked | |
588 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock | |
589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
590 | |
591 // create result type (range) | |
592 fields = TypeTuple::fields(0); | |
593 | |
594 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
595 | |
596 return TypeFunc::make(domain,range); | |
597 } | |
598 | |
599 | |
600 //----------------------------------------------------------------------------- | |
601 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { | |
602 // create input type (domain) | |
603 const Type **fields = TypeTuple::fields(2); | |
604 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked | |
605 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock | |
606 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
607 | |
608 // create result type (range) | |
609 fields = TypeTuple::fields(0); | |
610 | |
611 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
612 | |
613 return TypeFunc::make(domain,range); | |
614 } | |
615 | |
616 const TypeFunc* OptoRuntime::flush_windows_Type() { | |
617 // create input type (domain) | |
618 const Type** fields = TypeTuple::fields(1); | |
619 fields[TypeFunc::Parms+0] = NULL; // void | |
620 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); | |
621 | |
622 // create result type | |
623 fields = TypeTuple::fields(1); | |
624 fields[TypeFunc::Parms+0] = NULL; // void | |
625 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
626 | |
627 return TypeFunc::make(domain, range); | |
628 } | |
629 | |
630 const TypeFunc* OptoRuntime::l2f_Type() { | |
631 // create input type (domain) | |
632 const Type **fields = TypeTuple::fields(2); | |
633 fields[TypeFunc::Parms+0] = TypeLong::LONG; | |
634 fields[TypeFunc::Parms+1] = Type::HALF; | |
635 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
636 | |
637 // create result type (range) | |
638 fields = TypeTuple::fields(1); | |
639 fields[TypeFunc::Parms+0] = Type::FLOAT; | |
640 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
641 | |
642 return TypeFunc::make(domain, range); | |
643 } | |
644 | |
645 const TypeFunc* OptoRuntime::modf_Type() { | |
646 const Type **fields = TypeTuple::fields(2); | |
647 fields[TypeFunc::Parms+0] = Type::FLOAT; | |
648 fields[TypeFunc::Parms+1] = Type::FLOAT; | |
649 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
650 | |
651 // create result type (range) | |
652 fields = TypeTuple::fields(1); | |
653 fields[TypeFunc::Parms+0] = Type::FLOAT; | |
654 | |
655 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
656 | |
657 return TypeFunc::make(domain, range); | |
658 } | |
659 | |
660 const TypeFunc *OptoRuntime::Math_D_D_Type() { | |
661 // create input type (domain) | |
662 const Type **fields = TypeTuple::fields(2); | |
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663 // Symbol* name of class to be loaded |
0 | 664 fields[TypeFunc::Parms+0] = Type::DOUBLE; |
665 fields[TypeFunc::Parms+1] = Type::HALF; | |
666 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
667 | |
668 // create result type (range) | |
669 fields = TypeTuple::fields(2); | |
670 fields[TypeFunc::Parms+0] = Type::DOUBLE; | |
671 fields[TypeFunc::Parms+1] = Type::HALF; | |
672 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); | |
673 | |
674 return TypeFunc::make(domain, range); | |
675 } | |
676 | |
677 const TypeFunc* OptoRuntime::Math_DD_D_Type() { | |
678 const Type **fields = TypeTuple::fields(4); | |
679 fields[TypeFunc::Parms+0] = Type::DOUBLE; | |
680 fields[TypeFunc::Parms+1] = Type::HALF; | |
681 fields[TypeFunc::Parms+2] = Type::DOUBLE; | |
682 fields[TypeFunc::Parms+3] = Type::HALF; | |
683 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); | |
684 | |
685 // create result type (range) | |
686 fields = TypeTuple::fields(2); | |
687 fields[TypeFunc::Parms+0] = Type::DOUBLE; | |
688 fields[TypeFunc::Parms+1] = Type::HALF; | |
689 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); | |
690 | |
691 return TypeFunc::make(domain, range); | |
692 } | |
693 | |
694 //-------------- currentTimeMillis | |
695 | |
696 const TypeFunc* OptoRuntime::current_time_millis_Type() { | |
697 // create input type (domain) | |
698 const Type **fields = TypeTuple::fields(0); | |
699 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); | |
700 | |
701 // create result type (range) | |
702 fields = TypeTuple::fields(2); | |
703 fields[TypeFunc::Parms+0] = TypeLong::LONG; | |
704 fields[TypeFunc::Parms+1] = Type::HALF; | |
705 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); | |
706 | |
707 return TypeFunc::make(domain, range); | |
708 } | |
709 | |
710 // arraycopy stub variations: | |
711 enum ArrayCopyType { | |
712 ac_fast, // void(ptr, ptr, size_t) | |
713 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) | |
714 ac_slow, // void(ptr, int, ptr, int, int) | |
715 ac_generic // int(ptr, int, ptr, int, int) | |
716 }; | |
717 | |
718 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { | |
719 // create input type (domain) | |
720 int num_args = (act == ac_fast ? 3 : 5); | |
721 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); | |
722 int argcnt = num_args; | |
723 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths | |
724 const Type** fields = TypeTuple::fields(argcnt); | |
725 int argp = TypeFunc::Parms; | |
726 fields[argp++] = TypePtr::NOTNULL; // src | |
727 if (num_size_args == 0) { | |
728 fields[argp++] = TypeInt::INT; // src_pos | |
729 } | |
730 fields[argp++] = TypePtr::NOTNULL; // dest | |
731 if (num_size_args == 0) { | |
732 fields[argp++] = TypeInt::INT; // dest_pos | |
733 fields[argp++] = TypeInt::INT; // length | |
734 } | |
735 while (num_size_args-- > 0) { | |
736 fields[argp++] = TypeX_X; // size in whatevers (size_t) | |
737 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length | |
738 } | |
739 if (act == ac_checkcast) { | |
740 fields[argp++] = TypePtr::NOTNULL; // super_klass | |
741 } | |
742 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); | |
743 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); | |
744 | |
745 // create result type if needed | |
746 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); | |
747 fields = TypeTuple::fields(1); | |
748 if (retcnt == 0) | |
749 fields[TypeFunc::Parms+0] = NULL; // void | |
750 else | |
751 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed | |
752 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); | |
753 return TypeFunc::make(domain, range); | |
754 } | |
755 | |
756 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { | |
757 // This signature is simple: Two base pointers and a size_t. | |
758 return make_arraycopy_Type(ac_fast); | |
759 } | |
760 | |
761 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { | |
762 // An extension of fast_arraycopy_Type which adds type checking. | |
763 return make_arraycopy_Type(ac_checkcast); | |
764 } | |
765 | |
766 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { | |
767 // This signature is exactly the same as System.arraycopy. | |
768 // There are no intptr_t (int/long) arguments. | |
769 return make_arraycopy_Type(ac_slow); | |
770 } | |
771 | |
772 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { | |
773 // This signature is like System.arraycopy, except that it returns status. | |
774 return make_arraycopy_Type(ac_generic); | |
775 } | |
776 | |
777 | |
1763 | 778 const TypeFunc* OptoRuntime::array_fill_Type() { |
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779 // create input type (domain): pointer, int, size_t |
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780 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1)); |
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781 int argp = TypeFunc::Parms; |
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782 fields[argp++] = TypePtr::NOTNULL; |
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783 fields[argp++] = TypeInt::INT; |
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784 fields[argp++] = TypeX_X; // size in whatevers (size_t) |
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785 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length |
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786 const TypeTuple *domain = TypeTuple::make(argp, fields); |
1763 | 787 |
788 // create result type | |
789 fields = TypeTuple::fields(1); | |
790 fields[TypeFunc::Parms+0] = NULL; // void | |
791 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
792 | |
793 return TypeFunc::make(domain, range); | |
794 } | |
795 | |
0 | 796 //------------- Interpreter state access for on stack replacement |
797 const TypeFunc* OptoRuntime::osr_end_Type() { | |
798 // create input type (domain) | |
799 const Type **fields = TypeTuple::fields(1); | |
800 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf | |
801 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
802 | |
803 // create result type | |
804 fields = TypeTuple::fields(1); | |
805 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop | |
806 fields[TypeFunc::Parms+0] = NULL; // void | |
807 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
808 return TypeFunc::make(domain, range); | |
809 } | |
810 | |
811 //-------------- methodData update helpers | |
812 | |
813 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { | |
814 // create input type (domain) | |
815 const Type **fields = TypeTuple::fields(2); | |
816 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer | |
817 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop | |
818 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
819 | |
820 // create result type | |
821 fields = TypeTuple::fields(1); | |
822 fields[TypeFunc::Parms+0] = NULL; // void | |
823 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
824 return TypeFunc::make(domain,range); | |
825 } | |
826 | |
827 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) | |
828 if (receiver == NULL) return; | |
829 klassOop receiver_klass = receiver->klass(); | |
830 | |
831 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); | |
832 int empty_row = -1; // free row, if any is encountered | |
833 | |
834 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); | |
835 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { | |
836 // if (vc->receiver(row) == receiver_klass) | |
837 int receiver_off = ReceiverTypeData::receiver_cell_index(row); | |
838 intptr_t row_recv = *(mdp + receiver_off); | |
839 if (row_recv == (intptr_t) receiver_klass) { | |
840 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); | |
841 int count_off = ReceiverTypeData::receiver_count_cell_index(row); | |
842 *(mdp + count_off) += DataLayout::counter_increment; | |
843 return; | |
844 } else if (row_recv == 0) { | |
845 // else if (vc->receiver(row) == NULL) | |
846 empty_row = (int) row; | |
847 } | |
848 } | |
849 | |
850 if (empty_row != -1) { | |
851 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); | |
852 // vc->set_receiver(empty_row, receiver_klass); | |
853 *(mdp + receiver_off) = (intptr_t) receiver_klass; | |
854 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); | |
855 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); | |
856 *(mdp + count_off) = DataLayout::counter_increment; | |
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857 } else { |
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858 // Receiver did not match any saved receiver and there is no empty row for it. |
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859 // Increment total counter to indicate polymorphic case. |
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860 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); |
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861 *count_p += DataLayout::counter_increment; |
0 | 862 } |
863 JRT_END | |
864 | |
865 //----------------------------------------------------------------------------- | |
866 // implicit exception support. | |
867 | |
868 static void report_null_exception_in_code_cache(address exception_pc) { | |
869 ResourceMark rm; | |
870 CodeBlob* n = CodeCache::find_blob(exception_pc); | |
871 if (n != NULL) { | |
872 tty->print_cr("#"); | |
873 tty->print_cr("# HotSpot Runtime Error, null exception in generated code"); | |
874 tty->print_cr("#"); | |
875 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc); | |
876 | |
877 if (n->is_nmethod()) { | |
878 methodOop method = ((nmethod*)n)->method(); | |
879 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string()); | |
880 tty->print_cr("#"); | |
881 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) { | |
882 const char* title = "HotSpot Runtime Error"; | |
883 const char* question = "Do you want to exclude compilation of this method in future runs?"; | |
884 if (os::message_box(title, question)) { | |
885 CompilerOracle::append_comment_to_file(""); | |
886 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude"); | |
887 CompilerOracle::append_comment_to_file(""); | |
888 CompilerOracle::append_exclude_to_file(method); | |
889 tty->print_cr("#"); | |
890 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile); | |
891 tty->print_cr("#"); | |
892 } | |
893 } | |
894 fatal("Implicit null exception happened in compiled method"); | |
895 } else { | |
896 n->print(); | |
897 fatal("Implicit null exception happened in generated stub"); | |
898 } | |
899 } | |
900 fatal("Implicit null exception at wrong place"); | |
901 } | |
902 | |
903 | |
904 //------------------------------------------------------------------------------------- | |
905 // register policy | |
906 | |
907 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { | |
908 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); | |
909 switch (register_save_policy[reg]) { | |
910 case 'C': return false; //SOC | |
911 case 'E': return true ; //SOE | |
912 case 'N': return false; //NS | |
913 case 'A': return false; //AS | |
914 } | |
915 ShouldNotReachHere(); | |
916 return false; | |
917 } | |
918 | |
919 //----------------------------------------------------------------------- | |
920 // Exceptions | |
921 // | |
922 | |
923 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; | |
924 | |
925 // The method is an entry that is always called by a C++ method not | |
926 // directly from compiled code. Compiled code will call the C++ method following. | |
927 // We can't allow async exception to be installed during exception processing. | |
928 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) | |
929 | |
930 // Do not confuse exception_oop with pending_exception. The exception_oop | |
931 // is only used to pass arguments into the method. Not for general | |
932 // exception handling. DO NOT CHANGE IT to use pending_exception, since | |
933 // the runtime stubs checks this on exit. | |
934 assert(thread->exception_oop() != NULL, "exception oop is found"); | |
935 address handler_address = NULL; | |
936 | |
937 Handle exception(thread, thread->exception_oop()); | |
938 | |
939 if (TraceExceptions) { | |
940 trace_exception(exception(), thread->exception_pc(), ""); | |
941 } | |
942 // for AbortVMOnException flag | |
943 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); | |
944 | |
945 #ifdef ASSERT | |
1142 | 946 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { |
0 | 947 // should throw an exception here |
948 ShouldNotReachHere(); | |
949 } | |
950 #endif | |
951 | |
952 | |
953 // new exception handling: this method is entered only from adapters | |
954 // exceptions from compiled java methods are handled in compiled code | |
955 // using rethrow node | |
956 | |
957 address pc = thread->exception_pc(); | |
958 nm = CodeCache::find_nmethod(pc); | |
959 assert(nm != NULL, "No NMethod found"); | |
960 if (nm->is_native_method()) { | |
961 fatal("Native mathod should not have path to exception handling"); | |
962 } else { | |
963 // we are switching to old paradigm: search for exception handler in caller_frame | |
964 // instead in exception handler of caller_frame.sender() | |
965 | |
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966 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 967 // "Full-speed catching" is not necessary here, |
968 // since we're notifying the VM on every catch. | |
969 // Force deoptimization and the rest of the lookup | |
970 // will be fine. | |
971 deoptimize_caller_frame(thread, true); | |
972 } | |
973 | |
974 // Check the stack guard pages. If enabled, look for handler in this frame; | |
975 // otherwise, forcibly unwind the frame. | |
976 // | |
977 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. | |
978 bool force_unwind = !thread->reguard_stack(); | |
979 bool deopting = false; | |
980 if (nm->is_deopt_pc(pc)) { | |
981 deopting = true; | |
982 RegisterMap map(thread, false); | |
983 frame deoptee = thread->last_frame().sender(&map); | |
984 assert(deoptee.is_deoptimized_frame(), "must be deopted"); | |
985 // Adjust the pc back to the original throwing pc | |
986 pc = deoptee.pc(); | |
987 } | |
988 | |
989 // If we are forcing an unwind because of stack overflow then deopt is | |
990 // irrelevant sice we are throwing the frame away anyway. | |
991 | |
992 if (deopting && !force_unwind) { | |
993 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); | |
994 } else { | |
995 | |
996 handler_address = | |
997 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); | |
998 | |
999 if (handler_address == NULL) { | |
1000 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); | |
1001 assert (handler_address != NULL, "must have compiled handler"); | |
1002 // Update the exception cache only when the unwind was not forced. | |
1003 if (!force_unwind) { | |
1004 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); | |
1005 } | |
1006 } else { | |
1007 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); | |
1008 } | |
1009 } | |
1010 | |
1011 thread->set_exception_pc(pc); | |
1012 thread->set_exception_handler_pc(handler_address); | |
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1013 |
1295 | 1014 // Check if the exception PC is a MethodHandle call site. |
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1015 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); |
0 | 1016 } |
1017 | |
1018 // Restore correct return pc. Was saved above. | |
1019 thread->set_exception_oop(exception()); | |
1020 return handler_address; | |
1021 | |
1022 JRT_END | |
1023 | |
1024 // We are entering here from exception_blob | |
1025 // If there is a compiled exception handler in this method, we will continue there; | |
1026 // otherwise we will unwind the stack and continue at the caller of top frame method | |
1027 // Note we enter without the usual JRT wrapper. We will call a helper routine that | |
1028 // will do the normal VM entry. We do it this way so that we can see if the nmethod | |
1029 // we looked up the handler for has been deoptimized in the meantime. If it has been | |
1030 // we must not use the handler and instread return the deopt blob. | |
1031 address OptoRuntime::handle_exception_C(JavaThread* thread) { | |
1032 // | |
1033 // We are in Java not VM and in debug mode we have a NoHandleMark | |
1034 // | |
1035 #ifndef PRODUCT | |
1036 SharedRuntime::_find_handler_ctr++; // find exception handler | |
1037 #endif | |
1038 debug_only(NoHandleMark __hm;) | |
1039 nmethod* nm = NULL; | |
1040 address handler_address = NULL; | |
1041 { | |
1042 // Enter the VM | |
1043 | |
1044 ResetNoHandleMark rnhm; | |
1045 handler_address = handle_exception_C_helper(thread, nm); | |
1046 } | |
1047 | |
1048 // Back in java: Use no oops, DON'T safepoint | |
1049 | |
1050 // Now check to see if the handler we are returning is in a now | |
1051 // deoptimized frame | |
1052 | |
1053 if (nm != NULL) { | |
1054 RegisterMap map(thread, false); | |
1055 frame caller = thread->last_frame().sender(&map); | |
1056 #ifdef ASSERT | |
1057 assert(caller.is_compiled_frame(), "must be"); | |
1058 #endif // ASSERT | |
1059 if (caller.is_deoptimized_frame()) { | |
1060 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); | |
1061 } | |
1062 } | |
1063 return handler_address; | |
1064 } | |
1065 | |
1066 //------------------------------rethrow---------------------------------------- | |
1067 // We get here after compiled code has executed a 'RethrowNode'. The callee | |
1068 // is either throwing or rethrowing an exception. The callee-save registers | |
1069 // have been restored, synchronized objects have been unlocked and the callee | |
1070 // stack frame has been removed. The return address was passed in. | |
1071 // Exception oop is passed as the 1st argument. This routine is then called | |
1072 // from the stub. On exit, we know where to jump in the caller's code. | |
1073 // After this C code exits, the stub will pop his frame and end in a jump | |
1074 // (instead of a return). We enter the caller's default handler. | |
1075 // | |
1076 // This must be JRT_LEAF: | |
1077 // - caller will not change its state as we cannot block on exit, | |
1078 // therefore raw_exception_handler_for_return_address is all it takes | |
1079 // to handle deoptimized blobs | |
1080 // | |
1081 // However, there needs to be a safepoint check in the middle! So compiled | |
1082 // safepoints are completely watertight. | |
1083 // | |
1084 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. | |
1085 // | |
1086 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* | |
1087 // | |
1088 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { | |
1089 #ifndef PRODUCT | |
1090 SharedRuntime::_rethrow_ctr++; // count rethrows | |
1091 #endif | |
1092 assert (exception != NULL, "should have thrown a NULLPointerException"); | |
1093 #ifdef ASSERT | |
1142 | 1094 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { |
0 | 1095 // should throw an exception here |
1096 ShouldNotReachHere(); | |
1097 } | |
1098 #endif | |
1099 | |
1100 thread->set_vm_result(exception); | |
1101 // Frame not compiled (handles deoptimization blob) | |
1295 | 1102 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); |
0 | 1103 } |
1104 | |
1105 | |
1106 const TypeFunc *OptoRuntime::rethrow_Type() { | |
1107 // create input type (domain) | |
1108 const Type **fields = TypeTuple::fields(1); | |
1109 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop | |
1110 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); | |
1111 | |
1112 // create result type (range) | |
1113 fields = TypeTuple::fields(1); | |
1114 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop | |
1115 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
1116 | |
1117 return TypeFunc::make(domain, range); | |
1118 } | |
1119 | |
1120 | |
1121 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { | |
1122 // Deoptimize frame | |
1123 if (doit) { | |
1124 // Called from within the owner thread, so no need for safepoint | |
1125 RegisterMap reg_map(thread); | |
1126 frame stub_frame = thread->last_frame(); | |
1127 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); | |
1128 frame caller_frame = stub_frame.sender(®_map); | |
1129 | |
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1130 // bypass VM_DeoptimizeFrame and deoptimize the frame directly |
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1131 Deoptimization::deoptimize_frame(thread, caller_frame.id()); |
0 | 1132 } |
1133 } | |
1134 | |
1135 | |
1136 const TypeFunc *OptoRuntime::register_finalizer_Type() { | |
1137 // create input type (domain) | |
1138 const Type **fields = TypeTuple::fields(1); | |
1139 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver | |
1140 // // The JavaThread* is passed to each routine as the last argument | |
1141 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread | |
1142 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); | |
1143 | |
1144 // create result type (range) | |
1145 fields = TypeTuple::fields(0); | |
1146 | |
1147 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
1148 | |
1149 return TypeFunc::make(domain,range); | |
1150 } | |
1151 | |
1152 | |
1153 //----------------------------------------------------------------------------- | |
1154 // Dtrace support. entry and exit probes have the same signature | |
1155 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { | |
1156 // create input type (domain) | |
1157 const Type **fields = TypeTuple::fields(2); | |
1158 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage | |
1159 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering | |
1160 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
1161 | |
1162 // create result type (range) | |
1163 fields = TypeTuple::fields(0); | |
1164 | |
1165 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
1166 | |
1167 return TypeFunc::make(domain,range); | |
1168 } | |
1169 | |
1170 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { | |
1171 // create input type (domain) | |
1172 const Type **fields = TypeTuple::fields(2); | |
1173 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage | |
1174 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object | |
1175 | |
1176 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
1177 | |
1178 // create result type (range) | |
1179 fields = TypeTuple::fields(0); | |
1180 | |
1181 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
1182 | |
1183 return TypeFunc::make(domain,range); | |
1184 } | |
1185 | |
1186 | |
1187 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) | |
1188 assert(obj->is_oop(), "must be a valid oop"); | |
1189 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
1190 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
1191 JRT_END | |
1192 | |
1193 //----------------------------------------------------------------------------- | |
1194 | |
1195 NamedCounter * volatile OptoRuntime::_named_counters = NULL; | |
1196 | |
1197 // | |
1198 // dump the collected NamedCounters. | |
1199 // | |
1200 void OptoRuntime::print_named_counters() { | |
1201 int total_lock_count = 0; | |
1202 int eliminated_lock_count = 0; | |
1203 | |
1204 NamedCounter* c = _named_counters; | |
1205 while (c) { | |
1206 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { | |
1207 int count = c->count(); | |
1208 if (count > 0) { | |
1209 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; | |
1210 if (Verbose) { | |
1211 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); | |
1212 } | |
1213 total_lock_count += count; | |
1214 if (eliminated) { | |
1215 eliminated_lock_count += count; | |
1216 } | |
1217 } | |
1218 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { | |
1219 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); | |
1220 if (blc->nonzero()) { | |
1221 tty->print_cr("%s", c->name()); | |
1222 blc->print_on(tty); | |
1223 } | |
1224 } | |
1225 c = c->next(); | |
1226 } | |
1227 if (total_lock_count > 0) { | |
1228 tty->print_cr("dynamic locks: %d", total_lock_count); | |
1229 if (eliminated_lock_count) { | |
1230 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, | |
1231 (int)(eliminated_lock_count * 100.0 / total_lock_count)); | |
1232 } | |
1233 } | |
1234 } | |
1235 | |
1236 // | |
1237 // Allocate a new NamedCounter. The JVMState is used to generate the | |
1238 // name which consists of method@line for the inlining tree. | |
1239 // | |
1240 | |
1241 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { | |
1242 int max_depth = youngest_jvms->depth(); | |
1243 | |
1244 // Visit scopes from youngest to oldest. | |
1245 bool first = true; | |
1246 stringStream st; | |
1247 for (int depth = max_depth; depth >= 1; depth--) { | |
1248 JVMState* jvms = youngest_jvms->of_depth(depth); | |
1249 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; | |
1250 if (!first) { | |
1251 st.print(" "); | |
1252 } else { | |
1253 first = false; | |
1254 } | |
1255 int bci = jvms->bci(); | |
1256 if (bci < 0) bci = 0; | |
1257 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); | |
1258 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) | |
1259 } | |
1260 NamedCounter* c; | |
1261 if (tag == NamedCounter::BiasedLockingCounter) { | |
1262 c = new BiasedLockingNamedCounter(strdup(st.as_string())); | |
1263 } else { | |
1264 c = new NamedCounter(strdup(st.as_string()), tag); | |
1265 } | |
1266 | |
1267 // atomically add the new counter to the head of the list. We only | |
1268 // add counters so this is safe. | |
1269 NamedCounter* head; | |
1270 do { | |
1271 head = _named_counters; | |
1272 c->set_next(head); | |
1273 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); | |
1274 return c; | |
1275 } | |
1276 | |
1277 //----------------------------------------------------------------------------- | |
1278 // Non-product code | |
1279 #ifndef PRODUCT | |
1280 | |
1281 int trace_exception_counter = 0; | |
1282 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { | |
1283 ttyLocker ttyl; | |
1284 trace_exception_counter++; | |
1285 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); | |
1286 exception_oop->print_value(); | |
1287 tty->print(" in "); | |
1288 CodeBlob* blob = CodeCache::find_blob(exception_pc); | |
1289 if (blob->is_nmethod()) { | |
1290 ((nmethod*)blob)->method()->print_value(); | |
1291 } else if (blob->is_runtime_stub()) { | |
1292 tty->print("<runtime-stub>"); | |
1293 } else { | |
1294 tty->print("<unknown>"); | |
1295 } | |
1296 tty->print(" at " INTPTR_FORMAT, exception_pc); | |
1297 tty->print_cr("]"); | |
1298 } | |
1299 | |
1300 #endif // PRODUCT | |
1301 | |
1302 | |
1303 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
1304 // Called from call sites in compiled code with oop maps (actually safepoints) | |
1305 // Zaps dead locals in first java frame. | |
1306 // Is entry because may need to lock to generate oop maps | |
1307 // Currently, only used for compiler frames, but someday may be used | |
1308 // for interpreter frames, too. | |
1309 | |
1310 int OptoRuntime::ZapDeadCompiledLocals_count = 0; | |
1311 | |
1312 // avoid pointers to member funcs with these helpers | |
1313 static bool is_java_frame( frame* f) { return f->is_java_frame(); } | |
1314 static bool is_native_frame(frame* f) { return f->is_native_frame(); } | |
1315 | |
1316 | |
1317 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, | |
1318 bool (*is_this_the_right_frame_to_zap)(frame*)) { | |
1319 assert(JavaThread::current() == thread, "is this needed?"); | |
1320 | |
1321 if ( !ZapDeadCompiledLocals ) return; | |
1322 | |
1323 bool skip = false; | |
1324 | |
1325 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special | |
1326 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; | |
1327 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) | |
1328 warning("starting zapping after skipping"); | |
1329 | |
1330 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special | |
1331 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; | |
1332 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) | |
1333 warning("about to zap last zap"); | |
1334 | |
1335 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too | |
1336 | |
1337 if ( skip ) return; | |
1338 | |
1339 // find java frame and zap it | |
1340 | |
1341 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { | |
1342 if (is_this_the_right_frame_to_zap(sfs.current()) ) { | |
1343 sfs.current()->zap_dead_locals(thread, sfs.register_map()); | |
1344 return; | |
1345 } | |
1346 } | |
1347 warning("no frame found to zap in zap_dead_Java_locals_C"); | |
1348 } | |
1349 | |
1350 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) | |
1351 zap_dead_java_or_native_locals(thread, is_java_frame); | |
1352 JRT_END | |
1353 | |
1354 // The following does not work because for one thing, the | |
1355 // thread state is wrong; it expects java, but it is native. | |
605 | 1356 // Also, the invariants in a native stub are different and |
0 | 1357 // I'm not sure it is safe to have a MachCalRuntimeDirectNode |
1358 // in there. | |
1359 // So for now, we do not zap in native stubs. | |
1360 | |
1361 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) | |
1362 zap_dead_java_or_native_locals(thread, is_native_frame); | |
1363 JRT_END | |
1364 | |
1365 # endif |