Mercurial > hg > truffle
annotate src/share/vm/opto/runtime.cpp @ 6154:5142b5110214
Merge
| author | asaha |
|---|---|
| date | Tue, 08 May 2012 07:29:27 -0700 |
| parents | 1e76463170b3 0105f367a14c |
| children | 957c266d8bc5 a5dd6e3ef9f3 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2012, 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 |
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342 oop result = thread->vm_result(); |
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343 if ((len > 0) && (result != NULL) && |
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344 is_deoptimized_caller_frame(thread)) { |
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345 // Zero array here if the caller is deoptimized. |
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346 int size = ((typeArrayOop)result)->object_size(); |
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347 BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); |
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348 const size_t hs = arrayOopDesc::header_size(elem_type); |
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349 // Align to next 8 bytes to avoid trashing arrays's length. |
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350 const size_t aligned_hs = align_object_offset(hs); |
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351 HeapWord* obj = (HeapWord*)result; |
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352 if (aligned_hs > hs) { |
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353 Copy::zero_to_words(obj+hs, aligned_hs-hs); |
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354 } |
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355 // Optimized zeroing. |
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356 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); |
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357 } |
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358 |
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359 JRT_END |
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360 |
| 0 | 361 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. |
| 362 | |
| 363 // multianewarray for 2 dimensions | |
| 364 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread)) | |
| 365 #ifndef PRODUCT | |
| 366 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension | |
| 367 #endif | |
| 368 assert(check_compiled_frame(thread), "incorrect caller"); | |
| 369 assert(oop(elem_type)->is_klass(), "not a class"); | |
| 370 jint dims[2]; | |
| 371 dims[0] = len1; | |
| 372 dims[1] = len2; | |
| 373 oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); | |
| 374 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
| 375 thread->set_vm_result(obj); | |
| 376 JRT_END | |
| 377 | |
| 378 // multianewarray for 3 dimensions | |
| 379 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread)) | |
| 380 #ifndef PRODUCT | |
| 381 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension | |
| 382 #endif | |
| 383 assert(check_compiled_frame(thread), "incorrect caller"); | |
| 384 assert(oop(elem_type)->is_klass(), "not a class"); | |
| 385 jint dims[3]; | |
| 386 dims[0] = len1; | |
| 387 dims[1] = len2; | |
| 388 dims[2] = len3; | |
| 389 oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); | |
| 390 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
| 391 thread->set_vm_result(obj); | |
| 392 JRT_END | |
| 393 | |
| 394 // multianewarray for 4 dimensions | |
| 395 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) | |
| 396 #ifndef PRODUCT | |
| 397 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension | |
| 398 #endif | |
| 399 assert(check_compiled_frame(thread), "incorrect caller"); | |
| 400 assert(oop(elem_type)->is_klass(), "not a class"); | |
| 401 jint dims[4]; | |
| 402 dims[0] = len1; | |
| 403 dims[1] = len2; | |
| 404 dims[2] = len3; | |
| 405 dims[3] = len4; | |
| 406 oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); | |
| 407 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
| 408 thread->set_vm_result(obj); | |
| 409 JRT_END | |
| 410 | |
| 411 // multianewarray for 5 dimensions | |
| 412 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) | |
| 413 #ifndef PRODUCT | |
| 414 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension | |
| 415 #endif | |
| 416 assert(check_compiled_frame(thread), "incorrect caller"); | |
| 417 assert(oop(elem_type)->is_klass(), "not a class"); | |
| 418 jint dims[5]; | |
| 419 dims[0] = len1; | |
| 420 dims[1] = len2; | |
| 421 dims[2] = len3; | |
| 422 dims[3] = len4; | |
| 423 dims[4] = len5; | |
| 424 oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); | |
| 425 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); | |
| 426 thread->set_vm_result(obj); | |
| 427 JRT_END | |
| 428 | |
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429 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(klassOopDesc* elem_type, arrayOopDesc* dims, JavaThread *thread)) |
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430 assert(check_compiled_frame(thread), "incorrect caller"); |
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431 assert(oop(elem_type)->is_klass(), "not a class"); |
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432 assert(oop(dims)->is_typeArray(), "not an array"); |
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433 |
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434 ResourceMark rm; |
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435 jint len = dims->length(); |
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436 assert(len > 0, "Dimensions array should contain data"); |
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437 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); |
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438 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); |
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439 Copy::conjoint_jints_atomic(j_dims, c_dims, len); |
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440 |
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441 oop obj = arrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); |
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442 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); |
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443 thread->set_vm_result(obj); |
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444 JRT_END |
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445 |
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446 |
| 0 | 447 const TypeFunc *OptoRuntime::new_instance_Type() { |
| 448 // create input type (domain) | |
| 449 const Type **fields = TypeTuple::fields(1); | |
| 450 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated | |
| 451 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 452 | |
| 453 // create result type (range) | |
| 454 fields = TypeTuple::fields(1); | |
| 455 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
| 456 | |
| 457 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 458 | |
| 459 return TypeFunc::make(domain, range); | |
| 460 } | |
| 461 | |
| 462 | |
| 463 const TypeFunc *OptoRuntime::athrow_Type() { | |
| 464 // create input type (domain) | |
| 465 const Type **fields = TypeTuple::fields(1); | |
| 466 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated | |
| 467 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 468 | |
| 469 // create result type (range) | |
| 470 fields = TypeTuple::fields(0); | |
| 471 | |
| 472 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); | |
| 473 | |
| 474 return TypeFunc::make(domain, range); | |
| 475 } | |
| 476 | |
| 477 | |
| 478 const TypeFunc *OptoRuntime::new_array_Type() { | |
| 479 // create input type (domain) | |
| 480 const Type **fields = TypeTuple::fields(2); | |
| 481 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass | |
| 482 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size | |
| 483 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 484 | |
| 485 // create result type (range) | |
| 486 fields = TypeTuple::fields(1); | |
| 487 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
| 488 | |
| 489 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 490 | |
| 491 return TypeFunc::make(domain, range); | |
| 492 } | |
| 493 | |
| 494 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { | |
| 495 // create input type (domain) | |
| 496 const int nargs = ndim + 1; | |
| 497 const Type **fields = TypeTuple::fields(nargs); | |
| 498 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass | |
| 499 for( int i = 1; i < nargs; i++ ) | |
| 500 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size | |
| 501 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); | |
| 502 | |
| 503 // create result type (range) | |
| 504 fields = TypeTuple::fields(1); | |
| 505 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
| 506 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 507 | |
| 508 return TypeFunc::make(domain, range); | |
| 509 } | |
| 510 | |
| 511 const TypeFunc *OptoRuntime::multianewarray2_Type() { | |
| 512 return multianewarray_Type(2); | |
| 513 } | |
| 514 | |
| 515 const TypeFunc *OptoRuntime::multianewarray3_Type() { | |
| 516 return multianewarray_Type(3); | |
| 517 } | |
| 518 | |
| 519 const TypeFunc *OptoRuntime::multianewarray4_Type() { | |
| 520 return multianewarray_Type(4); | |
| 521 } | |
| 522 | |
| 523 const TypeFunc *OptoRuntime::multianewarray5_Type() { | |
| 524 return multianewarray_Type(5); | |
| 525 } | |
| 526 | |
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527 const TypeFunc *OptoRuntime::multianewarrayN_Type() { |
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528 // create input type (domain) |
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529 const Type **fields = TypeTuple::fields(2); |
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530 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass |
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531 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes |
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532 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); |
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533 |
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534 // create result type (range) |
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535 fields = TypeTuple::fields(1); |
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536 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop |
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537 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); |
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538 |
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539 return TypeFunc::make(domain, range); |
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540 } |
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541 |
| 342 | 542 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { |
| 543 const Type **fields = TypeTuple::fields(2); | |
| 544 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value | |
| 545 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread | |
| 546 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 547 | |
| 548 // create result type (range) | |
| 549 fields = TypeTuple::fields(0); | |
| 550 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); | |
| 551 | |
| 552 return TypeFunc::make(domain, range); | |
| 553 } | |
| 554 | |
| 555 const TypeFunc *OptoRuntime::g1_wb_post_Type() { | |
| 556 | |
| 557 const Type **fields = TypeTuple::fields(2); | |
| 558 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr | |
| 559 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread | |
| 560 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 561 | |
| 562 // create result type (range) | |
| 563 fields = TypeTuple::fields(0); | |
| 564 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
| 565 | |
| 566 return TypeFunc::make(domain, range); | |
| 567 } | |
| 568 | |
| 0 | 569 const TypeFunc *OptoRuntime::uncommon_trap_Type() { |
| 570 // create input type (domain) | |
| 571 const Type **fields = TypeTuple::fields(1); | |
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572 // Symbol* name of class to be loaded |
| 0 | 573 fields[TypeFunc::Parms+0] = TypeInt::INT; |
| 574 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 575 | |
| 576 // create result type (range) | |
| 577 fields = TypeTuple::fields(0); | |
| 578 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); | |
| 579 | |
| 580 return TypeFunc::make(domain, range); | |
| 581 } | |
| 582 | |
| 583 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 584 // Type used for stub generation for zap_dead_locals. | |
| 585 // No inputs or outputs | |
| 586 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { | |
| 587 // create input type (domain) | |
| 588 const Type **fields = TypeTuple::fields(0); | |
| 589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); | |
| 590 | |
| 591 // create result type (range) | |
| 592 fields = TypeTuple::fields(0); | |
| 593 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); | |
| 594 | |
| 595 return TypeFunc::make(domain,range); | |
| 596 } | |
| 597 # endif | |
| 598 | |
| 599 | |
| 600 //----------------------------------------------------------------------------- | |
| 601 // Monitor Handling | |
| 602 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { | |
| 603 // create input type (domain) | |
| 604 const Type **fields = TypeTuple::fields(2); | |
| 605 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked | |
| 606 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock | |
| 607 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
| 608 | |
| 609 // create result type (range) | |
| 610 fields = TypeTuple::fields(0); | |
| 611 | |
| 612 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
| 613 | |
| 614 return TypeFunc::make(domain,range); | |
| 615 } | |
| 616 | |
| 617 | |
| 618 //----------------------------------------------------------------------------- | |
| 619 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { | |
| 620 // create input type (domain) | |
| 621 const Type **fields = TypeTuple::fields(2); | |
| 622 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked | |
| 623 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock | |
| 624 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
| 625 | |
| 626 // create result type (range) | |
| 627 fields = TypeTuple::fields(0); | |
| 628 | |
| 629 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
| 630 | |
| 631 return TypeFunc::make(domain,range); | |
| 632 } | |
| 633 | |
| 634 const TypeFunc* OptoRuntime::flush_windows_Type() { | |
| 635 // create input type (domain) | |
| 636 const Type** fields = TypeTuple::fields(1); | |
| 637 fields[TypeFunc::Parms+0] = NULL; // void | |
| 638 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); | |
| 639 | |
| 640 // create result type | |
| 641 fields = TypeTuple::fields(1); | |
| 642 fields[TypeFunc::Parms+0] = NULL; // void | |
| 643 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
| 644 | |
| 645 return TypeFunc::make(domain, range); | |
| 646 } | |
| 647 | |
| 648 const TypeFunc* OptoRuntime::l2f_Type() { | |
| 649 // create input type (domain) | |
| 650 const Type **fields = TypeTuple::fields(2); | |
| 651 fields[TypeFunc::Parms+0] = TypeLong::LONG; | |
| 652 fields[TypeFunc::Parms+1] = Type::HALF; | |
| 653 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 654 | |
| 655 // create result type (range) | |
| 656 fields = TypeTuple::fields(1); | |
| 657 fields[TypeFunc::Parms+0] = Type::FLOAT; | |
| 658 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 659 | |
| 660 return TypeFunc::make(domain, range); | |
| 661 } | |
| 662 | |
| 663 const TypeFunc* OptoRuntime::modf_Type() { | |
| 664 const Type **fields = TypeTuple::fields(2); | |
| 665 fields[TypeFunc::Parms+0] = Type::FLOAT; | |
| 666 fields[TypeFunc::Parms+1] = Type::FLOAT; | |
| 667 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 668 | |
| 669 // create result type (range) | |
| 670 fields = TypeTuple::fields(1); | |
| 671 fields[TypeFunc::Parms+0] = Type::FLOAT; | |
| 672 | |
| 673 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 674 | |
| 675 return TypeFunc::make(domain, range); | |
| 676 } | |
| 677 | |
| 678 const TypeFunc *OptoRuntime::Math_D_D_Type() { | |
| 679 // create input type (domain) | |
| 680 const Type **fields = TypeTuple::fields(2); | |
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681 // Symbol* name of class to be loaded |
| 0 | 682 fields[TypeFunc::Parms+0] = Type::DOUBLE; |
| 683 fields[TypeFunc::Parms+1] = Type::HALF; | |
| 684 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 685 | |
| 686 // create result type (range) | |
| 687 fields = TypeTuple::fields(2); | |
| 688 fields[TypeFunc::Parms+0] = Type::DOUBLE; | |
| 689 fields[TypeFunc::Parms+1] = Type::HALF; | |
| 690 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 691 | |
| 692 return TypeFunc::make(domain, range); | |
| 693 } | |
| 694 | |
| 695 const TypeFunc* OptoRuntime::Math_DD_D_Type() { | |
| 696 const Type **fields = TypeTuple::fields(4); | |
| 697 fields[TypeFunc::Parms+0] = Type::DOUBLE; | |
| 698 fields[TypeFunc::Parms+1] = Type::HALF; | |
| 699 fields[TypeFunc::Parms+2] = Type::DOUBLE; | |
| 700 fields[TypeFunc::Parms+3] = Type::HALF; | |
| 701 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); | |
| 702 | |
| 703 // create result type (range) | |
| 704 fields = TypeTuple::fields(2); | |
| 705 fields[TypeFunc::Parms+0] = Type::DOUBLE; | |
| 706 fields[TypeFunc::Parms+1] = Type::HALF; | |
| 707 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 708 | |
| 709 return TypeFunc::make(domain, range); | |
| 710 } | |
| 711 | |
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712 //-------------- currentTimeMillis, currentTimeNanos, etc |
| 0 | 713 |
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714 const TypeFunc* OptoRuntime::void_long_Type() { |
| 0 | 715 // create input type (domain) |
| 716 const Type **fields = TypeTuple::fields(0); | |
| 717 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); | |
| 718 | |
| 719 // create result type (range) | |
| 720 fields = TypeTuple::fields(2); | |
| 721 fields[TypeFunc::Parms+0] = TypeLong::LONG; | |
| 722 fields[TypeFunc::Parms+1] = Type::HALF; | |
| 723 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 724 | |
| 725 return TypeFunc::make(domain, range); | |
| 726 } | |
| 727 | |
| 728 // arraycopy stub variations: | |
| 729 enum ArrayCopyType { | |
| 730 ac_fast, // void(ptr, ptr, size_t) | |
| 731 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) | |
| 732 ac_slow, // void(ptr, int, ptr, int, int) | |
| 733 ac_generic // int(ptr, int, ptr, int, int) | |
| 734 }; | |
| 735 | |
| 736 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { | |
| 737 // create input type (domain) | |
| 738 int num_args = (act == ac_fast ? 3 : 5); | |
| 739 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); | |
| 740 int argcnt = num_args; | |
| 741 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths | |
| 742 const Type** fields = TypeTuple::fields(argcnt); | |
| 743 int argp = TypeFunc::Parms; | |
| 744 fields[argp++] = TypePtr::NOTNULL; // src | |
| 745 if (num_size_args == 0) { | |
| 746 fields[argp++] = TypeInt::INT; // src_pos | |
| 747 } | |
| 748 fields[argp++] = TypePtr::NOTNULL; // dest | |
| 749 if (num_size_args == 0) { | |
| 750 fields[argp++] = TypeInt::INT; // dest_pos | |
| 751 fields[argp++] = TypeInt::INT; // length | |
| 752 } | |
| 753 while (num_size_args-- > 0) { | |
| 754 fields[argp++] = TypeX_X; // size in whatevers (size_t) | |
| 755 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length | |
| 756 } | |
| 757 if (act == ac_checkcast) { | |
| 758 fields[argp++] = TypePtr::NOTNULL; // super_klass | |
| 759 } | |
| 760 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); | |
| 761 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); | |
| 762 | |
| 763 // create result type if needed | |
| 764 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); | |
| 765 fields = TypeTuple::fields(1); | |
| 766 if (retcnt == 0) | |
| 767 fields[TypeFunc::Parms+0] = NULL; // void | |
| 768 else | |
| 769 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed | |
| 770 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); | |
| 771 return TypeFunc::make(domain, range); | |
| 772 } | |
| 773 | |
| 774 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { | |
| 775 // This signature is simple: Two base pointers and a size_t. | |
| 776 return make_arraycopy_Type(ac_fast); | |
| 777 } | |
| 778 | |
| 779 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { | |
| 780 // An extension of fast_arraycopy_Type which adds type checking. | |
| 781 return make_arraycopy_Type(ac_checkcast); | |
| 782 } | |
| 783 | |
| 784 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { | |
| 785 // This signature is exactly the same as System.arraycopy. | |
| 786 // There are no intptr_t (int/long) arguments. | |
| 787 return make_arraycopy_Type(ac_slow); | |
| 788 } | |
| 789 | |
| 790 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { | |
| 791 // This signature is like System.arraycopy, except that it returns status. | |
| 792 return make_arraycopy_Type(ac_generic); | |
| 793 } | |
| 794 | |
| 795 | |
| 1763 | 796 const TypeFunc* OptoRuntime::array_fill_Type() { |
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797 // create input type (domain): pointer, int, size_t |
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798 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1)); |
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799 int argp = TypeFunc::Parms; |
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800 fields[argp++] = TypePtr::NOTNULL; |
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801 fields[argp++] = TypeInt::INT; |
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802 fields[argp++] = TypeX_X; // size in whatevers (size_t) |
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803 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length |
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804 const TypeTuple *domain = TypeTuple::make(argp, fields); |
| 1763 | 805 |
| 806 // create result type | |
| 807 fields = TypeTuple::fields(1); | |
| 808 fields[TypeFunc::Parms+0] = NULL; // void | |
| 809 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
| 810 | |
| 811 return TypeFunc::make(domain, range); | |
| 812 } | |
| 813 | |
| 0 | 814 //------------- Interpreter state access for on stack replacement |
| 815 const TypeFunc* OptoRuntime::osr_end_Type() { | |
| 816 // create input type (domain) | |
| 817 const Type **fields = TypeTuple::fields(1); | |
| 818 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf | |
| 819 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 820 | |
| 821 // create result type | |
| 822 fields = TypeTuple::fields(1); | |
| 823 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop | |
| 824 fields[TypeFunc::Parms+0] = NULL; // void | |
| 825 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
| 826 return TypeFunc::make(domain, range); | |
| 827 } | |
| 828 | |
| 829 //-------------- methodData update helpers | |
| 830 | |
| 831 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { | |
| 832 // create input type (domain) | |
| 833 const Type **fields = TypeTuple::fields(2); | |
| 834 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer | |
| 835 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop | |
| 836 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); | |
| 837 | |
| 838 // create result type | |
| 839 fields = TypeTuple::fields(1); | |
| 840 fields[TypeFunc::Parms+0] = NULL; // void | |
| 841 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); | |
| 842 return TypeFunc::make(domain,range); | |
| 843 } | |
| 844 | |
| 845 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) | |
| 846 if (receiver == NULL) return; | |
| 847 klassOop receiver_klass = receiver->klass(); | |
| 848 | |
| 849 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); | |
| 850 int empty_row = -1; // free row, if any is encountered | |
| 851 | |
| 852 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); | |
| 853 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { | |
| 854 // if (vc->receiver(row) == receiver_klass) | |
| 855 int receiver_off = ReceiverTypeData::receiver_cell_index(row); | |
| 856 intptr_t row_recv = *(mdp + receiver_off); | |
| 857 if (row_recv == (intptr_t) receiver_klass) { | |
| 858 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); | |
| 859 int count_off = ReceiverTypeData::receiver_count_cell_index(row); | |
| 860 *(mdp + count_off) += DataLayout::counter_increment; | |
| 861 return; | |
| 862 } else if (row_recv == 0) { | |
| 863 // else if (vc->receiver(row) == NULL) | |
| 864 empty_row = (int) row; | |
| 865 } | |
| 866 } | |
| 867 | |
| 868 if (empty_row != -1) { | |
| 869 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); | |
| 870 // vc->set_receiver(empty_row, receiver_klass); | |
| 871 *(mdp + receiver_off) = (intptr_t) receiver_klass; | |
| 872 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); | |
| 873 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); | |
| 874 *(mdp + count_off) = DataLayout::counter_increment; | |
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875 } else { |
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876 // Receiver did not match any saved receiver and there is no empty row for it. |
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877 // Increment total counter to indicate polymorphic case. |
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878 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); |
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879 *count_p += DataLayout::counter_increment; |
| 0 | 880 } |
| 881 JRT_END | |
| 882 | |
| 883 //----------------------------------------------------------------------------- | |
| 884 // implicit exception support. | |
| 885 | |
| 886 static void report_null_exception_in_code_cache(address exception_pc) { | |
| 887 ResourceMark rm; | |
| 888 CodeBlob* n = CodeCache::find_blob(exception_pc); | |
| 889 if (n != NULL) { | |
| 890 tty->print_cr("#"); | |
| 891 tty->print_cr("# HotSpot Runtime Error, null exception in generated code"); | |
| 892 tty->print_cr("#"); | |
| 893 tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc); | |
| 894 | |
| 895 if (n->is_nmethod()) { | |
| 896 methodOop method = ((nmethod*)n)->method(); | |
| 897 tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string()); | |
| 898 tty->print_cr("#"); | |
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899 if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError && |
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900 CompilerOracle::has_command_file()) { |
| 0 | 901 const char* title = "HotSpot Runtime Error"; |
| 902 const char* question = "Do you want to exclude compilation of this method in future runs?"; | |
| 903 if (os::message_box(title, question)) { | |
| 904 CompilerOracle::append_comment_to_file(""); | |
| 905 CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude"); | |
| 906 CompilerOracle::append_comment_to_file(""); | |
| 907 CompilerOracle::append_exclude_to_file(method); | |
| 908 tty->print_cr("#"); | |
| 909 tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile); | |
| 910 tty->print_cr("#"); | |
| 911 } | |
| 912 } | |
| 913 fatal("Implicit null exception happened in compiled method"); | |
| 914 } else { | |
| 915 n->print(); | |
| 916 fatal("Implicit null exception happened in generated stub"); | |
| 917 } | |
| 918 } | |
| 919 fatal("Implicit null exception at wrong place"); | |
| 920 } | |
| 921 | |
| 922 | |
| 923 //------------------------------------------------------------------------------------- | |
| 924 // register policy | |
| 925 | |
| 926 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { | |
| 927 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); | |
| 928 switch (register_save_policy[reg]) { | |
| 929 case 'C': return false; //SOC | |
| 930 case 'E': return true ; //SOE | |
| 931 case 'N': return false; //NS | |
| 932 case 'A': return false; //AS | |
| 933 } | |
| 934 ShouldNotReachHere(); | |
| 935 return false; | |
| 936 } | |
| 937 | |
| 938 //----------------------------------------------------------------------- | |
| 939 // Exceptions | |
| 940 // | |
| 941 | |
| 942 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; | |
| 943 | |
| 944 // The method is an entry that is always called by a C++ method not | |
| 945 // directly from compiled code. Compiled code will call the C++ method following. | |
| 946 // We can't allow async exception to be installed during exception processing. | |
| 947 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) | |
| 948 | |
| 949 // Do not confuse exception_oop with pending_exception. The exception_oop | |
| 950 // is only used to pass arguments into the method. Not for general | |
| 951 // exception handling. DO NOT CHANGE IT to use pending_exception, since | |
| 952 // the runtime stubs checks this on exit. | |
| 953 assert(thread->exception_oop() != NULL, "exception oop is found"); | |
| 954 address handler_address = NULL; | |
| 955 | |
| 956 Handle exception(thread, thread->exception_oop()); | |
| 957 | |
| 958 if (TraceExceptions) { | |
| 959 trace_exception(exception(), thread->exception_pc(), ""); | |
| 960 } | |
| 961 // for AbortVMOnException flag | |
| 962 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); | |
| 963 | |
| 964 #ifdef ASSERT | |
| 1142 | 965 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { |
| 0 | 966 // should throw an exception here |
| 967 ShouldNotReachHere(); | |
| 968 } | |
| 969 #endif | |
| 970 | |
| 971 | |
| 972 // new exception handling: this method is entered only from adapters | |
| 973 // exceptions from compiled java methods are handled in compiled code | |
| 974 // using rethrow node | |
| 975 | |
| 976 address pc = thread->exception_pc(); | |
| 977 nm = CodeCache::find_nmethod(pc); | |
| 978 assert(nm != NULL, "No NMethod found"); | |
| 979 if (nm->is_native_method()) { | |
| 980 fatal("Native mathod should not have path to exception handling"); | |
| 981 } else { | |
| 982 // we are switching to old paradigm: search for exception handler in caller_frame | |
| 983 // instead in exception handler of caller_frame.sender() | |
| 984 | |
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985 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 986 // "Full-speed catching" is not necessary here, |
| 987 // since we're notifying the VM on every catch. | |
| 988 // Force deoptimization and the rest of the lookup | |
| 989 // will be fine. | |
| 990 deoptimize_caller_frame(thread, true); | |
| 991 } | |
| 992 | |
| 993 // Check the stack guard pages. If enabled, look for handler in this frame; | |
| 994 // otherwise, forcibly unwind the frame. | |
| 995 // | |
| 996 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. | |
| 997 bool force_unwind = !thread->reguard_stack(); | |
| 998 bool deopting = false; | |
| 999 if (nm->is_deopt_pc(pc)) { | |
| 1000 deopting = true; | |
| 1001 RegisterMap map(thread, false); | |
| 1002 frame deoptee = thread->last_frame().sender(&map); | |
| 1003 assert(deoptee.is_deoptimized_frame(), "must be deopted"); | |
| 1004 // Adjust the pc back to the original throwing pc | |
| 1005 pc = deoptee.pc(); | |
| 1006 } | |
| 1007 | |
| 1008 // If we are forcing an unwind because of stack overflow then deopt is | |
| 1009 // irrelevant sice we are throwing the frame away anyway. | |
| 1010 | |
| 1011 if (deopting && !force_unwind) { | |
| 1012 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); | |
| 1013 } else { | |
| 1014 | |
| 1015 handler_address = | |
| 1016 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); | |
| 1017 | |
| 1018 if (handler_address == NULL) { | |
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1019 Handle original_exception(thread, exception()); |
| 0 | 1020 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); |
| 1021 assert (handler_address != NULL, "must have compiled handler"); | |
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1022 // Update the exception cache only when the unwind was not forced |
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1023 // and there didn't happen another exception during the computation of the |
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1024 // compiled exception handler. |
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1025 if (!force_unwind && original_exception() == exception()) { |
| 0 | 1026 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); |
| 1027 } | |
| 1028 } else { | |
| 1029 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); | |
| 1030 } | |
| 1031 } | |
| 1032 | |
| 1033 thread->set_exception_pc(pc); | |
| 1034 thread->set_exception_handler_pc(handler_address); | |
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| 1295 | 1036 // Check if the exception PC is a MethodHandle call site. |
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1037 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); |
| 0 | 1038 } |
| 1039 | |
| 1040 // Restore correct return pc. Was saved above. | |
| 1041 thread->set_exception_oop(exception()); | |
| 1042 return handler_address; | |
| 1043 | |
| 1044 JRT_END | |
| 1045 | |
| 1046 // We are entering here from exception_blob | |
| 1047 // If there is a compiled exception handler in this method, we will continue there; | |
| 1048 // otherwise we will unwind the stack and continue at the caller of top frame method | |
| 1049 // Note we enter without the usual JRT wrapper. We will call a helper routine that | |
| 1050 // will do the normal VM entry. We do it this way so that we can see if the nmethod | |
| 1051 // we looked up the handler for has been deoptimized in the meantime. If it has been | |
| 1052 // we must not use the handler and instread return the deopt blob. | |
| 1053 address OptoRuntime::handle_exception_C(JavaThread* thread) { | |
| 1054 // | |
| 1055 // We are in Java not VM and in debug mode we have a NoHandleMark | |
| 1056 // | |
| 1057 #ifndef PRODUCT | |
| 1058 SharedRuntime::_find_handler_ctr++; // find exception handler | |
| 1059 #endif | |
| 1060 debug_only(NoHandleMark __hm;) | |
| 1061 nmethod* nm = NULL; | |
| 1062 address handler_address = NULL; | |
| 1063 { | |
| 1064 // Enter the VM | |
| 1065 | |
| 1066 ResetNoHandleMark rnhm; | |
| 1067 handler_address = handle_exception_C_helper(thread, nm); | |
| 1068 } | |
| 1069 | |
| 1070 // Back in java: Use no oops, DON'T safepoint | |
| 1071 | |
| 1072 // Now check to see if the handler we are returning is in a now | |
| 1073 // deoptimized frame | |
| 1074 | |
| 1075 if (nm != NULL) { | |
| 1076 RegisterMap map(thread, false); | |
| 1077 frame caller = thread->last_frame().sender(&map); | |
| 1078 #ifdef ASSERT | |
| 1079 assert(caller.is_compiled_frame(), "must be"); | |
| 1080 #endif // ASSERT | |
| 1081 if (caller.is_deoptimized_frame()) { | |
| 1082 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); | |
| 1083 } | |
| 1084 } | |
| 1085 return handler_address; | |
| 1086 } | |
| 1087 | |
| 1088 //------------------------------rethrow---------------------------------------- | |
| 1089 // We get here after compiled code has executed a 'RethrowNode'. The callee | |
| 1090 // is either throwing or rethrowing an exception. The callee-save registers | |
| 1091 // have been restored, synchronized objects have been unlocked and the callee | |
| 1092 // stack frame has been removed. The return address was passed in. | |
| 1093 // Exception oop is passed as the 1st argument. This routine is then called | |
| 1094 // from the stub. On exit, we know where to jump in the caller's code. | |
| 1095 // After this C code exits, the stub will pop his frame and end in a jump | |
| 1096 // (instead of a return). We enter the caller's default handler. | |
| 1097 // | |
| 1098 // This must be JRT_LEAF: | |
| 1099 // - caller will not change its state as we cannot block on exit, | |
| 1100 // therefore raw_exception_handler_for_return_address is all it takes | |
| 1101 // to handle deoptimized blobs | |
| 1102 // | |
| 1103 // However, there needs to be a safepoint check in the middle! So compiled | |
| 1104 // safepoints are completely watertight. | |
| 1105 // | |
| 1106 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. | |
| 1107 // | |
| 1108 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* | |
| 1109 // | |
| 1110 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { | |
| 1111 #ifndef PRODUCT | |
| 1112 SharedRuntime::_rethrow_ctr++; // count rethrows | |
| 1113 #endif | |
| 1114 assert (exception != NULL, "should have thrown a NULLPointerException"); | |
| 1115 #ifdef ASSERT | |
| 1142 | 1116 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { |
| 0 | 1117 // should throw an exception here |
| 1118 ShouldNotReachHere(); | |
| 1119 } | |
| 1120 #endif | |
| 1121 | |
| 1122 thread->set_vm_result(exception); | |
| 1123 // Frame not compiled (handles deoptimization blob) | |
| 1295 | 1124 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); |
| 0 | 1125 } |
| 1126 | |
| 1127 | |
| 1128 const TypeFunc *OptoRuntime::rethrow_Type() { | |
| 1129 // create input type (domain) | |
| 1130 const Type **fields = TypeTuple::fields(1); | |
| 1131 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop | |
| 1132 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); | |
| 1133 | |
| 1134 // create result type (range) | |
| 1135 fields = TypeTuple::fields(1); | |
| 1136 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop | |
| 1137 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
| 1138 | |
| 1139 return TypeFunc::make(domain, range); | |
| 1140 } | |
| 1141 | |
| 1142 | |
| 1143 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { | |
| 1144 // Deoptimize frame | |
| 1145 if (doit) { | |
| 1146 // Called from within the owner thread, so no need for safepoint | |
| 1147 RegisterMap reg_map(thread); | |
| 1148 frame stub_frame = thread->last_frame(); | |
| 1149 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); | |
| 1150 frame caller_frame = stub_frame.sender(®_map); | |
| 1151 | |
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1152 // Deoptimize the caller frame. |
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1153 Deoptimization::deoptimize_frame(thread, caller_frame.id()); |
| 0 | 1154 } |
| 1155 } | |
| 1156 | |
| 1157 | |
|
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1158 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { |
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1159 // Called from within the owner thread, so no need for safepoint |
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1160 RegisterMap reg_map(thread); |
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1161 frame stub_frame = thread->last_frame(); |
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1162 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); |
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1163 frame caller_frame = stub_frame.sender(®_map); |
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1164 return caller_frame.is_deoptimized_frame(); |
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1165 } |
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1166 |
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1167 |
| 0 | 1168 const TypeFunc *OptoRuntime::register_finalizer_Type() { |
| 1169 // create input type (domain) | |
| 1170 const Type **fields = TypeTuple::fields(1); | |
| 1171 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver | |
| 1172 // // The JavaThread* is passed to each routine as the last argument | |
| 1173 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread | |
| 1174 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); | |
| 1175 | |
| 1176 // create result type (range) | |
| 1177 fields = TypeTuple::fields(0); | |
| 1178 | |
| 1179 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
| 1180 | |
| 1181 return TypeFunc::make(domain,range); | |
| 1182 } | |
| 1183 | |
| 1184 | |
| 1185 //----------------------------------------------------------------------------- | |
| 1186 // Dtrace support. entry and exit probes have the same signature | |
| 1187 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { | |
| 1188 // create input type (domain) | |
| 1189 const Type **fields = TypeTuple::fields(2); | |
| 1190 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage | |
| 1191 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering | |
| 1192 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
| 1193 | |
| 1194 // create result type (range) | |
| 1195 fields = TypeTuple::fields(0); | |
| 1196 | |
| 1197 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
| 1198 | |
| 1199 return TypeFunc::make(domain,range); | |
| 1200 } | |
| 1201 | |
| 1202 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { | |
| 1203 // create input type (domain) | |
| 1204 const Type **fields = TypeTuple::fields(2); | |
| 1205 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage | |
| 1206 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object | |
| 1207 | |
| 1208 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); | |
| 1209 | |
| 1210 // create result type (range) | |
| 1211 fields = TypeTuple::fields(0); | |
| 1212 | |
| 1213 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
| 1214 | |
| 1215 return TypeFunc::make(domain,range); | |
| 1216 } | |
| 1217 | |
| 1218 | |
| 1219 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) | |
| 1220 assert(obj->is_oop(), "must be a valid oop"); | |
| 1221 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
| 1222 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
| 1223 JRT_END | |
| 1224 | |
| 1225 //----------------------------------------------------------------------------- | |
| 1226 | |
| 1227 NamedCounter * volatile OptoRuntime::_named_counters = NULL; | |
| 1228 | |
| 1229 // | |
| 1230 // dump the collected NamedCounters. | |
| 1231 // | |
| 1232 void OptoRuntime::print_named_counters() { | |
| 1233 int total_lock_count = 0; | |
| 1234 int eliminated_lock_count = 0; | |
| 1235 | |
| 1236 NamedCounter* c = _named_counters; | |
| 1237 while (c) { | |
| 1238 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { | |
| 1239 int count = c->count(); | |
| 1240 if (count > 0) { | |
| 1241 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; | |
| 1242 if (Verbose) { | |
| 1243 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); | |
| 1244 } | |
| 1245 total_lock_count += count; | |
| 1246 if (eliminated) { | |
| 1247 eliminated_lock_count += count; | |
| 1248 } | |
| 1249 } | |
| 1250 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { | |
| 1251 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); | |
| 1252 if (blc->nonzero()) { | |
| 1253 tty->print_cr("%s", c->name()); | |
| 1254 blc->print_on(tty); | |
| 1255 } | |
| 1256 } | |
| 1257 c = c->next(); | |
| 1258 } | |
| 1259 if (total_lock_count > 0) { | |
| 1260 tty->print_cr("dynamic locks: %d", total_lock_count); | |
| 1261 if (eliminated_lock_count) { | |
| 1262 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, | |
| 1263 (int)(eliminated_lock_count * 100.0 / total_lock_count)); | |
| 1264 } | |
| 1265 } | |
| 1266 } | |
| 1267 | |
| 1268 // | |
| 1269 // Allocate a new NamedCounter. The JVMState is used to generate the | |
| 1270 // name which consists of method@line for the inlining tree. | |
| 1271 // | |
| 1272 | |
| 1273 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { | |
| 1274 int max_depth = youngest_jvms->depth(); | |
| 1275 | |
| 1276 // Visit scopes from youngest to oldest. | |
| 1277 bool first = true; | |
| 1278 stringStream st; | |
| 1279 for (int depth = max_depth; depth >= 1; depth--) { | |
| 1280 JVMState* jvms = youngest_jvms->of_depth(depth); | |
| 1281 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; | |
| 1282 if (!first) { | |
| 1283 st.print(" "); | |
| 1284 } else { | |
| 1285 first = false; | |
| 1286 } | |
| 1287 int bci = jvms->bci(); | |
| 1288 if (bci < 0) bci = 0; | |
| 1289 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); | |
| 1290 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) | |
| 1291 } | |
| 1292 NamedCounter* c; | |
| 1293 if (tag == NamedCounter::BiasedLockingCounter) { | |
| 1294 c = new BiasedLockingNamedCounter(strdup(st.as_string())); | |
| 1295 } else { | |
| 1296 c = new NamedCounter(strdup(st.as_string()), tag); | |
| 1297 } | |
| 1298 | |
| 1299 // atomically add the new counter to the head of the list. We only | |
| 1300 // add counters so this is safe. | |
| 1301 NamedCounter* head; | |
| 1302 do { | |
| 1303 head = _named_counters; | |
| 1304 c->set_next(head); | |
| 1305 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); | |
| 1306 return c; | |
| 1307 } | |
| 1308 | |
| 1309 //----------------------------------------------------------------------------- | |
| 1310 // Non-product code | |
| 1311 #ifndef PRODUCT | |
| 1312 | |
| 1313 int trace_exception_counter = 0; | |
| 1314 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { | |
| 1315 ttyLocker ttyl; | |
| 1316 trace_exception_counter++; | |
| 1317 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); | |
| 1318 exception_oop->print_value(); | |
| 1319 tty->print(" in "); | |
| 1320 CodeBlob* blob = CodeCache::find_blob(exception_pc); | |
| 1321 if (blob->is_nmethod()) { | |
| 1322 ((nmethod*)blob)->method()->print_value(); | |
| 1323 } else if (blob->is_runtime_stub()) { | |
| 1324 tty->print("<runtime-stub>"); | |
| 1325 } else { | |
| 1326 tty->print("<unknown>"); | |
| 1327 } | |
| 1328 tty->print(" at " INTPTR_FORMAT, exception_pc); | |
| 1329 tty->print_cr("]"); | |
| 1330 } | |
| 1331 | |
| 1332 #endif // PRODUCT | |
| 1333 | |
| 1334 | |
| 1335 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
| 1336 // Called from call sites in compiled code with oop maps (actually safepoints) | |
| 1337 // Zaps dead locals in first java frame. | |
| 1338 // Is entry because may need to lock to generate oop maps | |
| 1339 // Currently, only used for compiler frames, but someday may be used | |
| 1340 // for interpreter frames, too. | |
| 1341 | |
| 1342 int OptoRuntime::ZapDeadCompiledLocals_count = 0; | |
| 1343 | |
| 1344 // avoid pointers to member funcs with these helpers | |
| 1345 static bool is_java_frame( frame* f) { return f->is_java_frame(); } | |
| 1346 static bool is_native_frame(frame* f) { return f->is_native_frame(); } | |
| 1347 | |
| 1348 | |
| 1349 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, | |
| 1350 bool (*is_this_the_right_frame_to_zap)(frame*)) { | |
| 1351 assert(JavaThread::current() == thread, "is this needed?"); | |
| 1352 | |
| 1353 if ( !ZapDeadCompiledLocals ) return; | |
| 1354 | |
| 1355 bool skip = false; | |
| 1356 | |
| 1357 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special | |
| 1358 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; | |
| 1359 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) | |
| 1360 warning("starting zapping after skipping"); | |
| 1361 | |
| 1362 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special | |
| 1363 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; | |
| 1364 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) | |
| 1365 warning("about to zap last zap"); | |
| 1366 | |
| 1367 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too | |
| 1368 | |
| 1369 if ( skip ) return; | |
| 1370 | |
| 1371 // find java frame and zap it | |
| 1372 | |
| 1373 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { | |
| 1374 if (is_this_the_right_frame_to_zap(sfs.current()) ) { | |
| 1375 sfs.current()->zap_dead_locals(thread, sfs.register_map()); | |
| 1376 return; | |
| 1377 } | |
| 1378 } | |
| 1379 warning("no frame found to zap in zap_dead_Java_locals_C"); | |
| 1380 } | |
| 1381 | |
| 1382 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) | |
| 1383 zap_dead_java_or_native_locals(thread, is_java_frame); | |
| 1384 JRT_END | |
| 1385 | |
| 1386 // The following does not work because for one thing, the | |
| 1387 // thread state is wrong; it expects java, but it is native. | |
| 605 | 1388 // Also, the invariants in a native stub are different and |
| 0 | 1389 // I'm not sure it is safe to have a MachCalRuntimeDirectNode |
| 1390 // in there. | |
| 1391 // So for now, we do not zap in native stubs. | |
| 1392 | |
| 1393 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) | |
| 1394 zap_dead_java_or_native_locals(thread, is_native_frame); | |
| 1395 JRT_END | |
| 1396 | |
| 1397 # endif |