Mercurial > hg > truffle
annotate src/share/vm/interpreter/interpreterRuntime.cpp @ 7212:291ffc492eb6
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 14 Dec 2012 14:35:13 +0100 |
| parents | 5d0bb7d52783 cd3d6a6b95d9 |
| children | 989155e2d07a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 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 "compiler/compileBroker.hpp" | |
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29 #include "compiler/disassembler.hpp" |
| 1972 | 30 #include "gc_interface/collectedHeap.hpp" |
| 31 #include "interpreter/interpreter.hpp" | |
| 32 #include "interpreter/interpreterRuntime.hpp" | |
| 33 #include "interpreter/linkResolver.hpp" | |
| 34 #include "interpreter/templateTable.hpp" | |
| 35 #include "memory/oopFactory.hpp" | |
| 36 #include "memory/universe.inline.hpp" | |
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37 #include "oops/constantPool.hpp" |
| 1972 | 38 #include "oops/instanceKlass.hpp" |
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39 #include "oops/methodData.hpp" |
| 1972 | 40 #include "oops/objArrayKlass.hpp" |
| 41 #include "oops/oop.inline.hpp" | |
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42 #include "oops/symbol.hpp" |
| 1972 | 43 #include "prims/jvmtiExport.hpp" |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "runtime/biasedLocking.hpp" | |
| 46 #include "runtime/compilationPolicy.hpp" | |
| 47 #include "runtime/deoptimization.hpp" | |
| 48 #include "runtime/fieldDescriptor.hpp" | |
| 49 #include "runtime/handles.inline.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/jfieldIDWorkaround.hpp" | |
| 53 #include "runtime/osThread.hpp" | |
| 54 #include "runtime/sharedRuntime.hpp" | |
| 55 #include "runtime/stubRoutines.hpp" | |
| 56 #include "runtime/synchronizer.hpp" | |
| 57 #include "runtime/threadCritical.hpp" | |
| 58 #include "utilities/events.hpp" | |
| 59 #ifdef TARGET_ARCH_x86 | |
| 60 # include "vm_version_x86.hpp" | |
| 61 #endif | |
| 62 #ifdef TARGET_ARCH_sparc | |
| 63 # include "vm_version_sparc.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_ARCH_zero | |
| 66 # include "vm_version_zero.hpp" | |
| 67 #endif | |
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68 #ifdef TARGET_ARCH_arm |
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69 # include "vm_version_arm.hpp" |
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70 #endif |
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71 #ifdef TARGET_ARCH_ppc |
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72 # include "vm_version_ppc.hpp" |
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73 #endif |
| 1972 | 74 #ifdef COMPILER2 |
| 75 #include "opto/runtime.hpp" | |
| 76 #endif | |
| 0 | 77 |
| 78 class UnlockFlagSaver { | |
| 79 private: | |
| 80 JavaThread* _thread; | |
| 81 bool _do_not_unlock; | |
| 82 public: | |
| 83 UnlockFlagSaver(JavaThread* t) { | |
| 84 _thread = t; | |
| 85 _do_not_unlock = t->do_not_unlock_if_synchronized(); | |
| 86 t->set_do_not_unlock_if_synchronized(false); | |
| 87 } | |
| 88 ~UnlockFlagSaver() { | |
| 89 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); | |
| 90 } | |
| 91 }; | |
| 92 | |
| 93 //------------------------------------------------------------------------------------------------------------------------ | |
| 94 // State accessors | |
| 95 | |
| 96 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { | |
| 97 last_frame(thread).interpreter_frame_set_bcp(bcp); | |
| 98 if (ProfileInterpreter) { | |
| 99 // ProfileTraps uses MDOs independently of ProfileInterpreter. | |
| 100 // That is why we must check both ProfileInterpreter and mdo != NULL. | |
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101 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
| 0 | 102 if (mdo != NULL) { |
| 103 NEEDS_CLEANUP; | |
| 104 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); | |
| 105 } | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 //------------------------------------------------------------------------------------------------------------------------ | |
| 110 // Constants | |
| 111 | |
| 112 | |
| 113 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) | |
| 114 // access constant pool | |
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115 ConstantPool* pool = method(thread)->constants(); |
| 1565 | 116 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
| 0 | 117 constantTag tag = pool->tag_at(index); |
| 118 | |
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119 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); |
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120 Klass* klass = pool->klass_at(index, CHECK); |
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121 oop java_class = klass->java_mirror(); |
| 0 | 122 thread->set_vm_result(java_class); |
| 123 IRT_END | |
| 124 | |
| 1602 | 125 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 126 assert(bytecode == Bytecodes::_fast_aldc || | |
| 127 bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); | |
| 128 ResourceMark rm(thread); | |
| 129 methodHandle m (thread, method(thread)); | |
| 2142 | 130 Bytecode_loadconstant ldc(m, bci(thread)); |
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131 oop result = ldc.resolve_constant(CHECK); |
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132 #ifdef ASSERT |
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133 { |
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134 // The bytecode wrappers aren't GC-safe so construct a new one |
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135 Bytecode_loadconstant ldc2(m, bci(thread)); |
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136 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); |
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137 assert(result == coop, "expected result for assembly code"); |
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138 } |
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139 #endif |
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140 thread->set_vm_result(result); |
| 1602 | 141 } |
| 142 IRT_END | |
| 143 | |
| 0 | 144 |
| 145 //------------------------------------------------------------------------------------------------------------------------ | |
| 146 // Allocation | |
| 147 | |
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148 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) |
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149 Klass* k_oop = pool->klass_at(index, CHECK); |
| 0 | 150 instanceKlassHandle klass (THREAD, k_oop); |
| 151 | |
| 152 // Make sure we are not instantiating an abstract klass | |
| 153 klass->check_valid_for_instantiation(true, CHECK); | |
| 154 | |
| 155 // Make sure klass is initialized | |
| 156 klass->initialize(CHECK); | |
| 157 | |
| 158 // At this point the class may not be fully initialized | |
| 159 // because of recursive initialization. If it is fully | |
| 160 // initialized & has_finalized is not set, we rewrite | |
| 161 // it into its fast version (Note: no locking is needed | |
| 162 // here since this is an atomic byte write and can be | |
| 163 // done more than once). | |
| 164 // | |
| 165 // Note: In case of classes with has_finalized we don't | |
| 166 // rewrite since that saves us an extra check in | |
| 167 // the fast version which then would call the | |
| 168 // slow version anyway (and do a call back into | |
| 169 // Java). | |
| 170 // If we have a breakpoint, then we don't rewrite | |
| 171 // because the _breakpoint bytecode would be lost. | |
| 172 oop obj = klass->allocate_instance(CHECK); | |
| 173 thread->set_vm_result(obj); | |
| 174 IRT_END | |
| 175 | |
| 176 | |
| 177 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) | |
| 178 oop obj = oopFactory::new_typeArray(type, size, CHECK); | |
| 179 thread->set_vm_result(obj); | |
| 180 IRT_END | |
| 181 | |
| 182 | |
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183 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) |
| 0 | 184 // Note: no oopHandle for pool & klass needed since they are not used |
| 185 // anymore after new_objArray() and no GC can happen before. | |
| 186 // (This may have to change if this code changes!) | |
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187 Klass* klass = pool->klass_at(index, CHECK); |
| 0 | 188 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
| 189 thread->set_vm_result(obj); | |
| 190 IRT_END | |
| 191 | |
| 192 | |
| 193 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) | |
| 194 // We may want to pass in more arguments - could make this slightly faster | |
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195 ConstantPool* constants = method(thread)->constants(); |
| 1565 | 196 int i = get_index_u2(thread, Bytecodes::_multianewarray); |
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197 Klass* klass = constants->klass_at(i, CHECK); |
| 0 | 198 int nof_dims = number_of_dimensions(thread); |
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199 assert(klass->is_klass(), "not a class"); |
| 0 | 200 assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
| 201 | |
| 202 // We must create an array of jints to pass to multi_allocate. | |
| 203 ResourceMark rm(thread); | |
| 204 const int small_dims = 10; | |
| 205 jint dim_array[small_dims]; | |
| 206 jint *dims = &dim_array[0]; | |
| 207 if (nof_dims > small_dims) { | |
| 208 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); | |
| 209 } | |
| 210 for (int index = 0; index < nof_dims; index++) { | |
| 211 // offset from first_size_address is addressed as local[index] | |
| 212 int n = Interpreter::local_offset_in_bytes(index)/jintSize; | |
| 213 dims[index] = first_size_address[n]; | |
| 214 } | |
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215 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
| 0 | 216 thread->set_vm_result(obj); |
| 217 IRT_END | |
| 218 | |
| 219 | |
| 220 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 221 assert(obj->is_oop(), "must be a valid oop"); | |
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222 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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223 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 224 IRT_END |
| 225 | |
| 226 | |
| 227 // Quicken instance-of and check-cast bytecodes | |
| 228 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) | |
| 229 // Force resolving; quicken the bytecode | |
| 1565 | 230 int which = get_index_u2(thread, Bytecodes::_checkcast); |
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231 ConstantPool* cpool = method(thread)->constants(); |
| 0 | 232 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
| 233 // program we might have seen an unquick'd bytecode in the interpreter but have another | |
| 234 // thread quicken the bytecode before we get here. | |
| 235 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); | |
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236 Klass* klass = cpool->klass_at(which, CHECK); |
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237 thread->set_vm_result_2(klass); |
| 0 | 238 IRT_END |
| 239 | |
| 240 | |
| 241 //------------------------------------------------------------------------------------------------------------------------ | |
| 242 // Exceptions | |
| 243 | |
| 244 // Assume the compiler is (or will be) interested in this event. | |
| 245 // If necessary, create an MDO to hold the information, and record it. | |
| 246 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { | |
| 247 assert(ProfileTraps, "call me only if profiling"); | |
| 248 methodHandle trap_method(thread, method(thread)); | |
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249 |
| 0 | 250 if (trap_method.not_null()) { |
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251 MethodData* trap_mdo = trap_method->method_data(); |
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252 if (trap_mdo == NULL) { |
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253 Method::build_interpreter_method_data(trap_method, THREAD); |
| 0 | 254 if (HAS_PENDING_EXCEPTION) { |
| 255 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
| 256 CLEAR_PENDING_EXCEPTION; | |
| 257 } | |
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258 trap_mdo = trap_method->method_data(); |
| 0 | 259 // and fall through... |
| 260 } | |
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261 if (trap_mdo != NULL) { |
| 0 | 262 // Update per-method count of trap events. The interpreter |
| 263 // is updating the MDO to simulate the effect of compiler traps. | |
| 264 int trap_bci = trap_method->bci_from(bcp(thread)); | |
| 265 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); | |
| 266 } | |
| 267 } | |
| 268 } | |
| 269 | |
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270 static Handle get_preinitialized_exception(Klass* k, TRAPS) { |
| 0 | 271 // get klass |
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272 InstanceKlass* klass = InstanceKlass::cast(k); |
| 0 | 273 assert(klass->is_initialized(), |
| 274 "this klass should have been initialized during VM initialization"); | |
| 275 // create instance - do not call constructor since we may have no | |
| 276 // (java) stack space left (should assert constructor is empty) | |
| 277 Handle exception; | |
| 278 oop exception_oop = klass->allocate_instance(CHECK_(exception)); | |
| 279 exception = Handle(THREAD, exception_oop); | |
| 280 if (StackTraceInThrowable) { | |
| 281 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 282 } | |
| 283 return exception; | |
| 284 } | |
| 285 | |
| 286 // Special handling for stack overflow: since we don't have any (java) stack | |
| 287 // space left we use the pre-allocated & pre-initialized StackOverflowError | |
| 288 // klass to create an stack overflow error instance. We do not call its | |
| 289 // constructor for the same reason (it is empty, anyway). | |
| 290 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 291 Handle exception = get_preinitialized_exception( | |
| 292 SystemDictionary::StackOverflowError_klass(), | |
| 293 CHECK); | |
| 294 THROW_HANDLE(exception); | |
| 295 IRT_END | |
| 296 | |
| 297 | |
| 298 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) | |
| 299 // lookup exception klass | |
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300 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 301 if (ProfileTraps) { |
| 302 if (s == vmSymbols::java_lang_ArithmeticException()) { | |
| 303 note_trap(thread, Deoptimization::Reason_div0_check, CHECK); | |
| 304 } else if (s == vmSymbols::java_lang_NullPointerException()) { | |
| 305 note_trap(thread, Deoptimization::Reason_null_check, CHECK); | |
| 306 } | |
| 307 } | |
| 308 // create exception | |
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309 Handle exception = Exceptions::new_exception(thread, s, message); |
| 0 | 310 thread->set_vm_result(exception()); |
| 311 IRT_END | |
| 312 | |
| 313 | |
| 314 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) | |
| 315 ResourceMark rm(thread); | |
| 6983 | 316 const char* klass_name = obj->klass()->external_name(); |
| 0 | 317 // lookup exception klass |
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318 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 319 if (ProfileTraps) { |
| 320 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
| 321 } | |
| 322 // create exception, with klass name as detail message | |
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323 Handle exception = Exceptions::new_exception(thread, s, klass_name); |
| 0 | 324 thread->set_vm_result(exception()); |
| 325 IRT_END | |
| 326 | |
| 327 | |
| 328 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) | |
| 329 char message[jintAsStringSize]; | |
| 330 // lookup exception klass | |
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331 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 332 if (ProfileTraps) { |
| 333 note_trap(thread, Deoptimization::Reason_range_check, CHECK); | |
| 334 } | |
| 335 // create exception | |
| 336 sprintf(message, "%d", index); | |
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337 THROW_MSG(s, message); |
| 0 | 338 IRT_END |
| 339 | |
| 340 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( | |
| 341 JavaThread* thread, oopDesc* obj)) | |
| 342 | |
| 343 ResourceMark rm(thread); | |
| 344 char* message = SharedRuntime::generate_class_cast_message( | |
| 6983 | 345 thread, obj->klass()->external_name()); |
| 0 | 346 |
| 347 if (ProfileTraps) { | |
| 348 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
| 349 } | |
| 350 | |
| 351 // create exception | |
| 352 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); | |
| 353 IRT_END | |
| 354 | |
| 355 // exception_handler_for_exception(...) returns the continuation address, | |
| 356 // the exception oop (via TLS) and sets the bci/bcp for the continuation. | |
| 357 // The exception oop is returned to make sure it is preserved over GC (it | |
| 358 // is only on the stack if the exception was thrown explicitly via athrow). | |
| 359 // During this operation, the expression stack contains the values for the | |
| 360 // bci where the exception happened. If the exception was propagated back | |
| 361 // from a call, the expression stack contains the values for the bci at the | |
| 362 // invoke w/o arguments (i.e., as if one were inside the call). | |
| 363 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) | |
| 364 | |
| 365 Handle h_exception(thread, exception); | |
| 366 methodHandle h_method (thread, method(thread)); | |
| 367 constantPoolHandle h_constants(thread, h_method->constants()); | |
| 368 bool should_repeat; | |
| 369 int handler_bci; | |
| 1602 | 370 int current_bci = bci(thread); |
| 0 | 371 |
| 372 // Need to do this check first since when _do_not_unlock_if_synchronized | |
| 373 // is set, we don't want to trigger any classloading which may make calls | |
| 374 // into java, or surprisingly find a matching exception handler for bci 0 | |
| 375 // since at this moment the method hasn't been "officially" entered yet. | |
| 376 if (thread->do_not_unlock_if_synchronized()) { | |
| 377 ResourceMark rm; | |
| 378 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); | |
| 379 thread->set_vm_result(exception); | |
| 380 #ifdef CC_INTERP | |
| 381 return (address) -1; | |
| 382 #else | |
| 383 return Interpreter::remove_activation_entry(); | |
| 384 #endif | |
| 385 } | |
| 386 | |
| 387 do { | |
| 388 should_repeat = false; | |
| 389 | |
| 390 // assertions | |
| 391 #ifdef ASSERT | |
| 392 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); | |
| 393 assert(h_exception->is_oop(), "just checking"); | |
| 394 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError | |
| 1142 | 395 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
| 0 | 396 if (ExitVMOnVerifyError) vm_exit(-1); |
| 397 ShouldNotReachHere(); | |
| 398 } | |
| 399 #endif | |
| 400 | |
| 401 // tracing | |
| 402 if (TraceExceptions) { | |
| 403 ttyLocker ttyl; | |
| 404 ResourceMark rm(thread); | |
| 405 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception()); | |
| 406 tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string()); | |
| 407 tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread); | |
| 408 } | |
| 409 // Don't go paging in something which won't be used. | |
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410 // else if (extable->length() == 0) { |
| 0 | 411 // // disabled for now - interpreter is not using shortcut yet |
| 412 // // (shortcut is not to call runtime if we have no exception handlers) | |
| 413 // // warning("performance bug: should not call runtime if method has no exception handlers"); | |
| 414 // } | |
| 415 // for AbortVMOnException flag | |
| 416 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); | |
| 417 | |
| 418 // exception handler lookup | |
| 419 KlassHandle h_klass(THREAD, h_exception->klass()); | |
| 420 handler_bci = h_method->fast_exception_handler_bci_for(h_klass, current_bci, THREAD); | |
| 421 if (HAS_PENDING_EXCEPTION) { | |
| 422 // We threw an exception while trying to find the exception handler. | |
| 423 // Transfer the new exception to the exception handle which will | |
| 424 // be set into thread local storage, and do another lookup for an | |
| 425 // exception handler for this exception, this time starting at the | |
| 426 // BCI of the exception handler which caused the exception to be | |
| 427 // thrown (bug 4307310). | |
| 428 h_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 429 CLEAR_PENDING_EXCEPTION; | |
| 430 if (handler_bci >= 0) { | |
| 431 current_bci = handler_bci; | |
| 432 should_repeat = true; | |
| 433 } | |
| 434 } | |
| 435 } while (should_repeat == true); | |
| 436 | |
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437 #ifdef GRAALVM |
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438 if (h_method->method_data() != NULL) { |
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439 ResourceMark rm(thread); |
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440 ProfileData* pdata = h_method->method_data()->allocate_bci_to_data(current_bci); |
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441 if (pdata != NULL) { |
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442 // We re-purpose the DS_RECOMPILE_BIT to record that an exception was thrown at |
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443 // the current bci. |
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444 int tstate0 = pdata->trap_state(); |
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445 int tstate1 = Deoptimization::trap_state_set_recompiled(tstate0, true); |
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446 if (tstate1 != tstate0) { |
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447 pdata->set_trap_state(tstate1); |
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448 } |
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449 } |
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450 } |
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451 #endif |
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452 |
| 0 | 453 // notify JVMTI of an exception throw; JVMTI will detect if this is a first |
| 454 // time throw or a stack unwinding throw and accordingly notify the debugger | |
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455 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 456 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
| 457 } | |
| 458 | |
| 459 #ifdef CC_INTERP | |
| 460 address continuation = (address)(intptr_t) handler_bci; | |
| 461 #else | |
| 462 address continuation = NULL; | |
| 463 #endif | |
| 464 address handler_pc = NULL; | |
| 465 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { | |
| 466 // Forward exception to callee (leaving bci/bcp untouched) because (a) no | |
| 467 // handler in this method, or (b) after a stack overflow there is not yet | |
| 468 // enough stack space available to reprotect the stack. | |
| 469 #ifndef CC_INTERP | |
| 470 continuation = Interpreter::remove_activation_entry(); | |
| 471 #endif | |
| 472 // Count this for compilation purposes | |
| 473 h_method->interpreter_throwout_increment(); | |
| 474 } else { | |
| 475 // handler in this method => change bci/bcp to handler bci/bcp and continue there | |
| 476 handler_pc = h_method->code_base() + handler_bci; | |
| 477 #ifndef CC_INTERP | |
| 478 set_bcp_and_mdp(handler_pc, thread); | |
| 479 continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; | |
| 480 #endif | |
| 481 } | |
| 482 // notify debugger of an exception catch | |
| 483 // (this is good for exceptions caught in native methods as well) | |
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484 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 485 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
| 486 } | |
| 487 | |
| 488 thread->set_vm_result(h_exception()); | |
| 489 return continuation; | |
| 490 IRT_END | |
| 491 | |
| 492 | |
| 493 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) | |
| 494 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); | |
| 495 // nothing to do - eventually we should remove this code entirely (see comments @ call sites) | |
| 496 IRT_END | |
| 497 | |
| 498 | |
| 499 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 500 THROW(vmSymbols::java_lang_AbstractMethodError()); | |
| 501 IRT_END | |
| 502 | |
| 503 | |
| 504 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) | |
| 505 THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); | |
| 506 IRT_END | |
| 507 | |
| 508 | |
| 509 //------------------------------------------------------------------------------------------------------------------------ | |
| 510 // Fields | |
| 511 // | |
| 512 | |
| 513 IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode)) | |
| 514 // resolve field | |
| 515 FieldAccessInfo info; | |
| 516 constantPoolHandle pool(thread, method(thread)->constants()); | |
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517 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic); |
| 0 | 518 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
| 519 | |
| 520 { | |
| 521 JvmtiHideSingleStepping jhss(thread); | |
| 1565 | 522 LinkResolver::resolve_field(info, pool, get_index_u2_cpcache(thread, bytecode), |
| 0 | 523 bytecode, false, CHECK); |
| 524 } // end JvmtiHideSingleStepping | |
| 525 | |
| 526 // check if link resolution caused cpCache to be updated | |
| 527 if (already_resolved(thread)) return; | |
| 528 | |
| 529 // compute auxiliary field attributes | |
| 530 TosState state = as_TosState(info.field_type()); | |
| 531 | |
| 532 // We need to delay resolving put instructions on final fields | |
| 533 // until we actually invoke one. This is required so we throw | |
| 534 // exceptions at the correct place. If we do not resolve completely | |
| 535 // in the current pass, leaving the put_code set to zero will | |
| 536 // cause the next put instruction to reresolve. | |
| 537 Bytecodes::Code put_code = (Bytecodes::Code)0; | |
| 538 | |
| 539 // We also need to delay resolving getstatic instructions until the | |
| 540 // class is intitialized. This is required so that access to the static | |
| 541 // field will call the initialization function every time until the class | |
| 542 // is completely initialized ala. in 2.17.5 in JVM Specification. | |
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543 InstanceKlass *klass = InstanceKlass::cast(info.klass()()); |
| 0 | 544 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) && |
| 545 !klass->is_initialized()); | |
| 546 Bytecodes::Code get_code = (Bytecodes::Code)0; | |
| 547 | |
| 548 if (!uninitialized_static) { | |
| 549 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); | |
| 550 if (is_put || !info.access_flags().is_final()) { | |
| 551 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); | |
| 552 } | |
| 553 } | |
| 554 | |
| 555 cache_entry(thread)->set_field( | |
| 556 get_code, | |
| 557 put_code, | |
| 558 info.klass(), | |
| 559 info.field_index(), | |
| 560 info.field_offset(), | |
| 561 state, | |
| 562 info.access_flags().is_final(), | |
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563 info.access_flags().is_volatile(), |
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564 pool->pool_holder() |
| 0 | 565 ); |
| 566 IRT_END | |
| 567 | |
| 568 | |
| 569 //------------------------------------------------------------------------------------------------------------------------ | |
| 570 // Synchronization | |
| 571 // | |
| 572 // The interpreter's synchronization code is factored out so that it can | |
| 573 // be shared by method invocation and synchronized blocks. | |
| 574 //%note synchronization_3 | |
| 575 | |
| 576 static void trace_locking(Handle& h_locking_obj, bool is_locking) { | |
| 577 ObjectSynchronizer::trace_locking(h_locking_obj, false, true, is_locking); | |
| 578 } | |
| 579 | |
| 580 | |
| 581 //%note monitor_1 | |
| 582 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) | |
| 583 #ifdef ASSERT | |
| 584 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 585 #endif | |
| 586 if (PrintBiasedLockingStatistics) { | |
| 587 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 588 } | |
| 589 Handle h_obj(thread, elem->obj()); | |
| 590 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
| 591 "must be NULL or an object"); | |
| 592 if (UseBiasedLocking) { | |
| 593 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 594 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); | |
| 595 } else { | |
| 596 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); | |
| 597 } | |
| 598 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), | |
| 599 "must be NULL or an object"); | |
| 600 #ifdef ASSERT | |
| 601 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 602 #endif | |
| 603 IRT_END | |
| 604 | |
| 605 | |
| 606 //%note monitor_1 | |
| 607 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) | |
| 608 #ifdef ASSERT | |
| 609 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 610 #endif | |
| 611 Handle h_obj(thread, elem->obj()); | |
| 612 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
| 613 "must be NULL or an object"); | |
| 614 if (elem == NULL || h_obj()->is_unlocked()) { | |
| 615 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
| 616 } | |
| 617 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); | |
| 618 // Free entry. This must be done here, since a pending exception might be installed on | |
| 619 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. | |
| 620 elem->set_obj(NULL); | |
| 621 #ifdef ASSERT | |
| 622 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 623 #endif | |
| 624 IRT_END | |
| 625 | |
| 626 | |
| 627 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) | |
| 628 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
| 629 IRT_END | |
| 630 | |
| 631 | |
| 632 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) | |
| 633 // Returns an illegal exception to install into the current thread. The | |
| 634 // pending_exception flag is cleared so normal exception handling does not | |
| 635 // trigger. Any current installed exception will be overwritten. This | |
| 636 // method will be called during an exception unwind. | |
| 637 | |
| 638 assert(!HAS_PENDING_EXCEPTION, "no pending exception"); | |
| 639 Handle exception(thread, thread->vm_result()); | |
| 640 assert(exception() != NULL, "vm result should be set"); | |
| 641 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) | |
| 1142 | 642 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
| 0 | 643 exception = get_preinitialized_exception( |
| 644 SystemDictionary::IllegalMonitorStateException_klass(), | |
| 645 CATCH); | |
| 646 } | |
| 647 thread->set_vm_result(exception()); | |
| 648 IRT_END | |
| 649 | |
| 650 | |
| 651 //------------------------------------------------------------------------------------------------------------------------ | |
| 652 // Invokes | |
| 653 | |
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654 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) |
| 0 | 655 return method->orig_bytecode_at(method->bci_from(bcp)); |
| 656 IRT_END | |
| 657 | |
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658 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) |
| 0 | 659 method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
| 660 IRT_END | |
| 661 | |
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662 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) |
| 0 | 663 JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
| 664 IRT_END | |
| 665 | |
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666 IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 0 | 667 // extract receiver from the outgoing argument list if necessary |
| 668 Handle receiver(thread, NULL); | |
| 669 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) { | |
| 670 ResourceMark rm(thread); | |
| 671 methodHandle m (thread, method(thread)); | |
| 2142 | 672 Bytecode_invoke call(m, bci(thread)); |
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673 Symbol* signature = call.signature(); |
| 0 | 674 receiver = Handle(thread, |
| 675 thread->last_frame().interpreter_callee_receiver(signature)); | |
| 676 assert(Universe::heap()->is_in_reserved_or_null(receiver()), | |
| 677 "sanity check"); | |
| 678 assert(receiver.is_null() || | |
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679 !Universe::heap()->is_in_reserved(receiver->klass()), |
| 0 | 680 "sanity check"); |
| 681 } | |
| 682 | |
| 683 // resolve method | |
| 684 CallInfo info; | |
| 685 constantPoolHandle pool(thread, method(thread)->constants()); | |
| 686 | |
| 687 { | |
| 688 JvmtiHideSingleStepping jhss(thread); | |
| 689 LinkResolver::resolve_invoke(info, receiver, pool, | |
| 1565 | 690 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 0 | 691 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
| 692 int retry_count = 0; | |
| 693 while (info.resolved_method()->is_old()) { | |
| 694 // It is very unlikely that method is redefined more than 100 times | |
| 695 // in the middle of resolve. If it is looping here more than 100 times | |
| 696 // means then there could be a bug here. | |
| 697 guarantee((retry_count++ < 100), | |
| 698 "Could not resolve to latest version of redefined method"); | |
| 699 // method is redefined in the middle of resolve so re-try. | |
| 700 LinkResolver::resolve_invoke(info, receiver, pool, | |
| 1565 | 701 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 0 | 702 } |
| 703 } | |
| 704 } // end JvmtiHideSingleStepping | |
| 705 | |
| 706 // check if link resolution caused cpCache to be updated | |
| 707 if (already_resolved(thread)) return; | |
| 708 | |
| 709 if (bytecode == Bytecodes::_invokeinterface) { | |
| 710 | |
| 711 if (TraceItables && Verbose) { | |
| 712 ResourceMark rm(thread); | |
| 713 tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string()); | |
| 714 } | |
| 715 if (info.resolved_method()->method_holder() == | |
| 1142 | 716 SystemDictionary::Object_klass()) { |
| 0 | 717 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
| 718 // (see also cpCacheOop.cpp for details) | |
| 719 methodHandle rm = info.resolved_method(); | |
| 720 assert(rm->is_final() || info.has_vtable_index(), | |
| 721 "should have been set already"); | |
| 722 cache_entry(thread)->set_method(bytecode, rm, info.vtable_index()); | |
| 723 } else { | |
| 724 // Setup itable entry | |
| 725 int index = klassItable::compute_itable_index(info.resolved_method()()); | |
| 726 cache_entry(thread)->set_interface_call(info.resolved_method(), index); | |
| 727 } | |
| 728 } else { | |
| 729 cache_entry(thread)->set_method( | |
| 730 bytecode, | |
| 731 info.resolved_method(), | |
| 732 info.vtable_index()); | |
| 733 } | |
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734 } |
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735 IRT_END |
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736 |
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737 |
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738 // First time execution: Resolve symbols, create a permanent MethodType object. |
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739 IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) { |
|
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740 assert(EnableInvokeDynamic, ""); |
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741 const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
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742 |
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743 // resolve method |
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744 CallInfo info; |
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745 constantPoolHandle pool(thread, method(thread)->constants()); |
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746 |
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747 { |
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748 JvmtiHideSingleStepping jhss(thread); |
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749 LinkResolver::resolve_invoke(info, Handle(), pool, |
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750 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
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751 } // end JvmtiHideSingleStepping |
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752 |
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753 cache_entry(thread)->set_method_handle(pool, info); |
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754 } |
| 0 | 755 IRT_END |
| 756 | |
| 757 | |
|
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758 // First time execution: Resolve symbols, create a permanent CallSite object. |
|
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759 IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) { |
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760 assert(EnableInvokeDynamic, ""); |
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761 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
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762 |
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763 //TO DO: consider passing BCI to Java. |
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764 // int caller_bci = method(thread)->bci_from(bcp(thread)); |
|
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765 |
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766 // resolve method |
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767 CallInfo info; |
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768 constantPoolHandle pool(thread, method(thread)->constants()); |
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769 int index = get_index_u4(thread, bytecode); |
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770 { |
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771 JvmtiHideSingleStepping jhss(thread); |
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772 LinkResolver::resolve_invoke(info, Handle(), pool, |
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773 index, bytecode, CHECK); |
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774 } // end JvmtiHideSingleStepping |
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775 |
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776 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); |
|
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777 cp_cache_entry->set_dynamic_call(pool, info); |
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778 } |
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779 IRT_END |
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780 |
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781 |
| 0 | 782 //------------------------------------------------------------------------------------------------------------------------ |
| 783 // Miscellaneous | |
| 784 | |
| 785 | |
| 941 | 786 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { |
| 787 nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); | |
| 788 assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); | |
| 789 if (branch_bcp != NULL && nm != NULL) { | |
| 790 // This was a successful request for an OSR nmethod. Because | |
| 791 // frequency_counter_overflow_inner ends with a safepoint check, | |
| 792 // nm could have been unloaded so look it up again. It's unsafe | |
| 793 // to examine nm directly since it might have been freed and used | |
| 794 // for something else. | |
| 795 frame fr = thread->last_frame(); | |
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796 Method* method = fr.interpreter_frame_method(); |
| 941 | 797 int bci = method->bci_from(fr.interpreter_frame_bcp()); |
| 1783 | 798 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
| 941 | 799 } |
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800 #ifndef PRODUCT |
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801 if (TraceOnStackReplacement) { |
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802 if (nm != NULL) { |
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803 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry()); |
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804 nm->print(); |
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805 } |
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806 } |
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807 #endif |
| 941 | 808 return nm; |
| 809 } | |
| 810 | |
| 0 | 811 IRT_ENTRY(nmethod*, |
| 941 | 812 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
| 0 | 813 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 814 // flag, in case this method triggers classloading which will call into Java. | |
| 815 UnlockFlagSaver fs(thread); | |
| 816 | |
| 817 frame fr = thread->last_frame(); | |
| 818 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
| 819 methodHandle method(thread, fr.interpreter_frame_method()); | |
| 1783 | 820 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; |
| 821 const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; | |
| 822 | |
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823 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
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824 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
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825 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
| 0 | 826 |
| 1783 | 827 if (osr_nm != NULL) { |
| 828 // We may need to do on-stack replacement which requires that no | |
| 829 // monitors in the activation are biased because their | |
| 830 // BasicObjectLocks will need to migrate during OSR. Force | |
| 831 // unbiasing of all monitors in the activation now (even though | |
| 832 // the OSR nmethod might be invalidated) because we don't have a | |
| 833 // safepoint opportunity later once the migration begins. | |
| 834 if (UseBiasedLocking) { | |
| 835 ResourceMark rm; | |
| 836 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); | |
| 837 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 838 kptr < fr.interpreter_frame_monitor_begin(); | |
| 839 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 840 if( kptr->obj() != NULL ) { | |
| 841 objects_to_revoke->append(Handle(THREAD, kptr->obj())); | |
| 842 } | |
| 0 | 843 } |
| 1783 | 844 BiasedLocking::revoke(objects_to_revoke); |
| 0 | 845 } |
| 846 } | |
| 1783 | 847 return osr_nm; |
| 0 | 848 IRT_END |
| 849 | |
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850 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) |
| 0 | 851 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 852 int bci = method->bci_from(cur_bcp); | |
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853 MethodData* mdo = method->method_data(); |
| 0 | 854 if (mdo == NULL) return 0; |
| 855 return mdo->bci_to_di(bci); | |
| 856 IRT_END | |
| 857 | |
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858 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
| 0 | 859 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 860 // flag, in case this method triggers classloading which will call into Java. | |
| 861 UnlockFlagSaver fs(thread); | |
| 862 | |
| 863 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 864 frame fr = thread->last_frame(); | |
| 865 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
| 866 methodHandle method(thread, fr.interpreter_frame_method()); | |
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867 Method::build_interpreter_method_data(method, THREAD); |
| 0 | 868 if (HAS_PENDING_EXCEPTION) { |
| 869 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
| 870 CLEAR_PENDING_EXCEPTION; | |
| 871 // and fall through... | |
| 872 } | |
| 873 IRT_END | |
| 874 | |
| 875 | |
| 876 #ifdef ASSERT | |
|
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877 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) |
| 0 | 878 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 879 | |
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880 MethodData* mdo = method->method_data(); |
| 0 | 881 assert(mdo != NULL, "must not be null"); |
| 882 | |
| 883 int bci = method->bci_from(bcp); | |
| 884 | |
| 885 address mdp2 = mdo->bci_to_dp(bci); | |
| 886 if (mdp != mdp2) { | |
| 887 ResourceMark rm; | |
| 888 ResetNoHandleMark rnm; // In a LEAF entry. | |
| 889 HandleMark hm; | |
| 890 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); | |
| 891 int current_di = mdo->dp_to_di(mdp); | |
| 892 int expected_di = mdo->dp_to_di(mdp2); | |
| 893 tty->print_cr(" actual di %d expected di %d", current_di, expected_di); | |
| 894 int expected_approx_bci = mdo->data_at(expected_di)->bci(); | |
| 895 int approx_bci = -1; | |
| 896 if (current_di >= 0) { | |
| 897 approx_bci = mdo->data_at(current_di)->bci(); | |
| 898 } | |
| 899 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); | |
| 900 mdo->print_on(tty); | |
| 901 method->print_codes(); | |
| 902 } | |
| 903 assert(mdp == mdp2, "wrong mdp"); | |
| 904 IRT_END | |
| 905 #endif // ASSERT | |
| 906 | |
| 907 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) | |
| 908 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 909 ResourceMark rm(thread); | |
| 910 HandleMark hm(thread); | |
| 911 frame fr = thread->last_frame(); | |
| 912 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
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913 MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); |
| 0 | 914 |
| 915 // Grab a lock to ensure atomic access to setting the return bci and | |
| 916 // the displacement. This can block and GC, invalidating all naked oops. | |
| 917 MutexLocker ml(RetData_lock); | |
| 918 | |
| 919 // ProfileData is essentially a wrapper around a derived oop, so we | |
| 920 // need to take the lock before making any ProfileData structures. | |
| 921 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); | |
| 922 RetData* rdata = data->as_RetData(); | |
| 923 address new_mdp = rdata->fixup_ret(return_bci, h_mdo); | |
| 924 fr.interpreter_frame_set_mdp(new_mdp); | |
| 925 IRT_END | |
| 926 | |
| 927 | |
| 928 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) | |
| 929 // We used to need an explict preserve_arguments here for invoke bytecodes. However, | |
| 930 // stack traversal automatically takes care of preserving arguments for invoke, so | |
| 931 // this is no longer needed. | |
| 932 | |
| 933 // IRT_END does an implicit safepoint check, hence we are guaranteed to block | |
| 934 // if this is called during a safepoint | |
| 935 | |
| 936 if (JvmtiExport::should_post_single_step()) { | |
| 937 // We are called during regular safepoints and when the VM is | |
| 938 // single stepping. If any thread is marked for single stepping, | |
| 939 // then we may have JVMTI work to do. | |
| 940 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); | |
| 941 } | |
| 942 IRT_END | |
| 943 | |
| 944 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, | |
| 945 ConstantPoolCacheEntry *cp_entry)) | |
| 946 | |
| 947 // check the access_flags for the field in the klass | |
|
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949 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); |
| 0 | 950 int index = cp_entry->field_index(); |
| 3938 | 951 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
| 0 | 952 |
| 953 switch(cp_entry->flag_state()) { | |
| 954 case btos: // fall through | |
| 955 case ctos: // fall through | |
| 956 case stos: // fall through | |
| 957 case itos: // fall through | |
| 958 case ftos: // fall through | |
| 959 case ltos: // fall through | |
| 960 case dtos: // fall through | |
| 961 case atos: break; | |
| 962 default: ShouldNotReachHere(); return; | |
| 963 } | |
| 964 bool is_static = (obj == NULL); | |
| 965 HandleMark hm(thread); | |
| 966 | |
| 967 Handle h_obj; | |
| 968 if (!is_static) { | |
| 969 // non-static field accessors have an object, but we need a handle | |
| 970 h_obj = Handle(thread, obj); | |
| 971 } | |
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972 instanceKlassHandle h_cp_entry_f1(thread, (Klass*)cp_entry->f1_as_klass()); |
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973 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static); |
| 0 | 974 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid); |
| 975 IRT_END | |
| 976 | |
| 977 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, | |
| 978 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) | |
| 979 | |
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980 Klass* k = (Klass*)cp_entry->f1_as_klass(); |
| 0 | 981 |
| 982 // check the access_flags for the field in the klass | |
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983 InstanceKlass* ik = InstanceKlass::cast(k); |
| 0 | 984 int index = cp_entry->field_index(); |
| 985 // bail out if field modifications are not watched | |
| 3938 | 986 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
| 0 | 987 |
| 988 char sig_type = '\0'; | |
| 989 | |
| 990 switch(cp_entry->flag_state()) { | |
| 991 case btos: sig_type = 'Z'; break; | |
| 992 case ctos: sig_type = 'C'; break; | |
| 993 case stos: sig_type = 'S'; break; | |
| 994 case itos: sig_type = 'I'; break; | |
| 995 case ftos: sig_type = 'F'; break; | |
| 996 case atos: sig_type = 'L'; break; | |
| 997 case ltos: sig_type = 'J'; break; | |
| 998 case dtos: sig_type = 'D'; break; | |
| 999 default: ShouldNotReachHere(); return; | |
| 1000 } | |
| 1001 bool is_static = (obj == NULL); | |
| 1002 | |
| 1003 HandleMark hm(thread); | |
| 1004 instanceKlassHandle h_klass(thread, k); | |
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1005 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static); |
| 0 | 1006 jvalue fvalue; |
| 1007 #ifdef _LP64 | |
| 1008 fvalue = *value; | |
| 1009 #else | |
| 1010 // Long/double values are stored unaligned and also noncontiguously with | |
| 1011 // tagged stacks. We can't just do a simple assignment even in the non- | |
| 1012 // J/D cases because a C++ compiler is allowed to assume that a jvalue is | |
| 1013 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. | |
| 1014 // We assume that the two halves of longs/doubles are stored in interpreter | |
| 1015 // stack slots in platform-endian order. | |
| 1016 jlong_accessor u; | |
| 1017 jint* newval = (jint*)value; | |
| 1018 u.words[0] = newval[0]; | |
| 1506 | 1019 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
| 0 | 1020 fvalue.j = u.long_value; |
| 1021 #endif // _LP64 | |
| 1022 | |
| 1023 Handle h_obj; | |
| 1024 if (!is_static) { | |
| 1025 // non-static field accessors have an object, but we need a handle | |
| 1026 h_obj = Handle(thread, obj); | |
| 1027 } | |
| 1028 | |
| 1029 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj, | |
| 1030 fid, sig_type, &fvalue); | |
| 1031 IRT_END | |
| 1032 | |
| 1033 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) | |
| 1034 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
| 1035 IRT_END | |
| 1036 | |
| 1037 | |
| 1038 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) | |
| 1039 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
| 1040 IRT_END | |
| 1041 | |
| 1042 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) | |
| 1043 { | |
| 1044 return (Interpreter::contains(pc) ? 1 : 0); | |
| 1045 } | |
| 1046 IRT_END | |
| 1047 | |
| 1048 | |
| 1049 // Implementation of SignatureHandlerLibrary | |
| 1050 | |
| 1051 address SignatureHandlerLibrary::set_handler_blob() { | |
| 1052 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); | |
| 1053 if (handler_blob == NULL) { | |
| 1054 return NULL; | |
| 1055 } | |
| 1748 | 1056 address handler = handler_blob->code_begin(); |
| 0 | 1057 _handler_blob = handler_blob; |
| 1058 _handler = handler; | |
| 1059 return handler; | |
| 1060 } | |
| 1061 | |
| 1062 void SignatureHandlerLibrary::initialize() { | |
| 1063 if (_fingerprints != NULL) { | |
| 1064 return; | |
| 1065 } | |
| 1066 if (set_handler_blob() == NULL) { | |
| 1067 vm_exit_out_of_memory(blob_size, "native signature handlers"); | |
| 1068 } | |
| 1069 | |
| 1070 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", | |
| 1071 SignatureHandlerLibrary::buffer_size); | |
| 1748 | 1072 _buffer = bb->code_begin(); |
| 0 | 1073 |
| 6197 | 1074 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
| 1075 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); | |
| 0 | 1076 } |
| 1077 | |
| 1078 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { | |
| 1079 address handler = _handler; | |
| 1748 | 1080 int insts_size = buffer->pure_insts_size(); |
| 1081 if (handler + insts_size > _handler_blob->code_end()) { | |
| 0 | 1082 // get a new handler blob |
| 1083 handler = set_handler_blob(); | |
| 1084 } | |
| 1085 if (handler != NULL) { | |
| 1748 | 1086 memcpy(handler, buffer->insts_begin(), insts_size); |
| 0 | 1087 pd_set_handler(handler); |
| 1748 | 1088 ICache::invalidate_range(handler, insts_size); |
| 1089 _handler = handler + insts_size; | |
| 0 | 1090 } |
| 1091 return handler; | |
| 1092 } | |
| 1093 | |
| 1094 void SignatureHandlerLibrary::add(methodHandle method) { | |
| 1095 if (method->signature_handler() == NULL) { | |
| 1096 // use slow signature handler if we can't do better | |
| 1097 int handler_index = -1; | |
| 1098 // check if we can use customized (fast) signature handler | |
| 1099 if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { | |
| 1100 // use customized signature handler | |
| 1101 MutexLocker mu(SignatureHandlerLibrary_lock); | |
| 1102 // make sure data structure is initialized | |
| 1103 initialize(); | |
| 1104 // lookup method signature's fingerprint | |
| 1105 uint64_t fingerprint = Fingerprinter(method).fingerprint(); | |
| 1106 handler_index = _fingerprints->find(fingerprint); | |
| 1107 // create handler if necessary | |
| 1108 if (handler_index < 0) { | |
| 1109 ResourceMark rm; | |
| 1110 ptrdiff_t align_offset = (address) | |
| 1111 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer; | |
| 1112 CodeBuffer buffer((address)(_buffer + align_offset), | |
| 1113 SignatureHandlerLibrary::buffer_size - align_offset); | |
| 1114 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); | |
| 1115 // copy into code heap | |
| 1116 address handler = set_handler(&buffer); | |
| 1117 if (handler == NULL) { | |
| 1118 // use slow signature handler | |
| 1119 } else { | |
| 1120 // debugging suppport | |
| 1121 if (PrintSignatureHandlers) { | |
| 1122 tty->cr(); | |
| 1123 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", | |
| 1124 _handlers->length(), | |
| 1125 (method->is_static() ? "static" : "receiver"), | |
| 1126 method->name_and_sig_as_C_string(), | |
| 1127 fingerprint, | |
| 1748 | 1128 buffer.insts_size()); |
| 1129 Disassembler::decode(handler, handler + buffer.insts_size()); | |
| 0 | 1130 #ifndef PRODUCT |
| 1131 tty->print_cr(" --- associated result handler ---"); | |
| 1132 address rh_begin = Interpreter::result_handler(method()->result_type()); | |
| 1133 address rh_end = rh_begin; | |
| 1134 while (*(int*)rh_end != 0) { | |
| 1135 rh_end += sizeof(int); | |
| 1136 } | |
| 1137 Disassembler::decode(rh_begin, rh_end); | |
| 1138 #endif | |
| 1139 } | |
| 1140 // add handler to library | |
| 1141 _fingerprints->append(fingerprint); | |
| 1142 _handlers->append(handler); | |
| 1143 // set handler index | |
| 1144 assert(_fingerprints->length() == _handlers->length(), "sanity check"); | |
| 1145 handler_index = _fingerprints->length() - 1; | |
| 1146 } | |
| 1147 } | |
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1148 // Set handler under SignatureHandlerLibrary_lock |
| 0 | 1149 if (handler_index < 0) { |
| 1150 // use generic signature handler | |
| 1151 method->set_signature_handler(Interpreter::slow_signature_handler()); | |
| 1152 } else { | |
| 1153 // set handler | |
| 1154 method->set_signature_handler(_handlers->at(handler_index)); | |
| 1155 } | |
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1156 } else { |
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1157 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
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1158 // use generic signature handler |
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1159 method->set_signature_handler(Interpreter::slow_signature_handler()); |
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1160 } |
| 0 | 1161 } |
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1162 #ifdef ASSERT |
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1163 int handler_index = -1; |
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1164 int fingerprint_index = -2; |
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1165 { |
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1166 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
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1167 // in any way if accessed from multiple threads. To avoid races with another |
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1168 // thread which may change the arrays in the above, mutex protected block, we |
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1169 // have to protect this read access here with the same mutex as well! |
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1170 MutexLocker mu(SignatureHandlerLibrary_lock); |
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1171 if (_handlers != NULL) { |
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1172 handler_index = _handlers->find(method->signature_handler()); |
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1173 fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint()); |
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1174 } |
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1175 } |
| 0 | 1176 assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
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1177 handler_index == fingerprint_index, "sanity check"); |
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1178 #endif // ASSERT |
| 0 | 1179 } |
| 1180 | |
| 1181 | |
| 1182 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; | |
| 1183 address SignatureHandlerLibrary::_handler = NULL; | |
| 1184 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; | |
| 1185 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; | |
| 1186 address SignatureHandlerLibrary::_buffer = NULL; | |
| 1187 | |
| 1188 | |
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1189 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) |
| 0 | 1190 methodHandle m(thread, method); |
| 1191 assert(m->is_native(), "sanity check"); | |
| 1192 // lookup native function entry point if it doesn't exist | |
| 1193 bool in_base_library; | |
| 1194 if (!m->has_native_function()) { | |
| 1195 NativeLookup::lookup(m, in_base_library, CHECK); | |
| 1196 } | |
| 1197 // make sure signature handler is installed | |
| 1198 SignatureHandlerLibrary::add(m); | |
| 1199 // The interpreter entry point checks the signature handler first, | |
| 1200 // before trying to fetch the native entry point and klass mirror. | |
| 1201 // We must set the signature handler last, so that multiple processors | |
| 1202 // preparing the same method will be sure to see non-null entry & mirror. | |
| 1203 IRT_END | |
| 1204 | |
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1205 #if defined(IA32) || defined(AMD64) || defined(ARM) |
| 0 | 1206 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) |
| 1207 if (src_address == dest_address) { | |
| 1208 return; | |
| 1209 } | |
| 1210 ResetNoHandleMark rnm; // In a LEAF entry. | |
| 1211 HandleMark hm; | |
| 1212 ResourceMark rm; | |
| 1213 frame fr = thread->last_frame(); | |
| 1214 assert(fr.is_interpreted_frame(), ""); | |
| 1215 jint bci = fr.interpreter_frame_bci(); | |
| 1216 methodHandle mh(thread, fr.interpreter_frame_method()); | |
| 2142 | 1217 Bytecode_invoke invoke(mh, bci); |
| 1218 ArgumentSizeComputer asc(invoke.signature()); | |
| 1219 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver | |
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1220 Copy::conjoint_jbytes(src_address, dest_address, |
| 1506 | 1221 size_of_arguments * Interpreter::stackElementSize); |
| 0 | 1222 IRT_END |
| 1223 #endif |