Mercurial > hg > truffle
annotate src/share/vm/interpreter/interpreterRuntime.cpp @ 20705:d3f3f7677537
6898462: The escape analysis with G1 cause crash assertion src/share/vm/runtime/vframeArray.cpp:94
Summary: OOM during reallocation of scalar replaced objects in deoptimization causes crashes
Reviewed-by: kvn, jrose
| author | roland |
|---|---|
| date | Tue, 25 Nov 2014 17:33:59 +0100 |
| parents | 134f18d0174b |
| children | 7848fc12602b |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 |
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78 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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79 |
| 0 | 80 class UnlockFlagSaver { |
| 81 private: | |
| 82 JavaThread* _thread; | |
| 83 bool _do_not_unlock; | |
| 84 public: | |
| 85 UnlockFlagSaver(JavaThread* t) { | |
| 86 _thread = t; | |
| 87 _do_not_unlock = t->do_not_unlock_if_synchronized(); | |
| 88 t->set_do_not_unlock_if_synchronized(false); | |
| 89 } | |
| 90 ~UnlockFlagSaver() { | |
| 91 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); | |
| 92 } | |
| 93 }; | |
| 94 | |
| 95 //------------------------------------------------------------------------------------------------------------------------ | |
| 96 // State accessors | |
| 97 | |
| 98 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { | |
| 99 last_frame(thread).interpreter_frame_set_bcp(bcp); | |
| 100 if (ProfileInterpreter) { | |
| 101 // ProfileTraps uses MDOs independently of ProfileInterpreter. | |
| 102 // That is why we must check both ProfileInterpreter and mdo != NULL. | |
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103 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
| 0 | 104 if (mdo != NULL) { |
| 105 NEEDS_CLEANUP; | |
| 106 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); | |
| 107 } | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 //------------------------------------------------------------------------------------------------------------------------ | |
| 112 // Constants | |
| 113 | |
| 114 | |
| 115 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) | |
| 116 // access constant pool | |
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117 ConstantPool* pool = method(thread)->constants(); |
| 1565 | 118 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
| 0 | 119 constantTag tag = pool->tag_at(index); |
| 120 | |
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121 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); |
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122 Klass* klass = pool->klass_at(index, CHECK); |
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123 oop java_class = klass->java_mirror(); |
| 0 | 124 thread->set_vm_result(java_class); |
| 125 IRT_END | |
| 126 | |
| 1602 | 127 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 128 assert(bytecode == Bytecodes::_fast_aldc || | |
| 129 bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); | |
| 130 ResourceMark rm(thread); | |
| 131 methodHandle m (thread, method(thread)); | |
| 2142 | 132 Bytecode_loadconstant ldc(m, bci(thread)); |
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133 oop result = ldc.resolve_constant(CHECK); |
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134 #ifdef ASSERT |
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135 { |
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136 // The bytecode wrappers aren't GC-safe so construct a new one |
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137 Bytecode_loadconstant ldc2(m, bci(thread)); |
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138 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); |
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139 assert(result == coop, "expected result for assembly code"); |
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140 } |
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141 #endif |
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142 thread->set_vm_result(result); |
| 1602 | 143 } |
| 144 IRT_END | |
| 145 | |
| 0 | 146 |
| 147 //------------------------------------------------------------------------------------------------------------------------ | |
| 148 // Allocation | |
| 149 | |
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150 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) |
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151 Klass* k_oop = pool->klass_at(index, CHECK); |
| 0 | 152 instanceKlassHandle klass (THREAD, k_oop); |
| 153 | |
| 154 // Make sure we are not instantiating an abstract klass | |
| 155 klass->check_valid_for_instantiation(true, CHECK); | |
| 156 | |
| 157 // Make sure klass is initialized | |
| 158 klass->initialize(CHECK); | |
| 159 | |
| 160 // At this point the class may not be fully initialized | |
| 161 // because of recursive initialization. If it is fully | |
| 162 // initialized & has_finalized is not set, we rewrite | |
| 163 // it into its fast version (Note: no locking is needed | |
| 164 // here since this is an atomic byte write and can be | |
| 165 // done more than once). | |
| 166 // | |
| 167 // Note: In case of classes with has_finalized we don't | |
| 168 // rewrite since that saves us an extra check in | |
| 169 // the fast version which then would call the | |
| 170 // slow version anyway (and do a call back into | |
| 171 // Java). | |
| 172 // If we have a breakpoint, then we don't rewrite | |
| 173 // because the _breakpoint bytecode would be lost. | |
| 174 oop obj = klass->allocate_instance(CHECK); | |
| 175 thread->set_vm_result(obj); | |
| 176 IRT_END | |
| 177 | |
| 178 | |
| 179 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) | |
| 180 oop obj = oopFactory::new_typeArray(type, size, CHECK); | |
| 181 thread->set_vm_result(obj); | |
| 182 IRT_END | |
| 183 | |
| 184 | |
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185 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) |
| 0 | 186 // Note: no oopHandle for pool & klass needed since they are not used |
| 187 // anymore after new_objArray() and no GC can happen before. | |
| 188 // (This may have to change if this code changes!) | |
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189 Klass* klass = pool->klass_at(index, CHECK); |
| 0 | 190 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
| 191 thread->set_vm_result(obj); | |
| 192 IRT_END | |
| 193 | |
| 194 | |
| 195 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) | |
| 196 // We may want to pass in more arguments - could make this slightly faster | |
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197 ConstantPool* constants = method(thread)->constants(); |
| 1565 | 198 int i = get_index_u2(thread, Bytecodes::_multianewarray); |
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199 Klass* klass = constants->klass_at(i, CHECK); |
| 0 | 200 int nof_dims = number_of_dimensions(thread); |
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201 assert(klass->is_klass(), "not a class"); |
| 0 | 202 assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
| 203 | |
| 204 // We must create an array of jints to pass to multi_allocate. | |
| 205 ResourceMark rm(thread); | |
| 206 const int small_dims = 10; | |
| 207 jint dim_array[small_dims]; | |
| 208 jint *dims = &dim_array[0]; | |
| 209 if (nof_dims > small_dims) { | |
| 210 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); | |
| 211 } | |
| 212 for (int index = 0; index < nof_dims; index++) { | |
| 213 // offset from first_size_address is addressed as local[index] | |
| 214 int n = Interpreter::local_offset_in_bytes(index)/jintSize; | |
| 215 dims[index] = first_size_address[n]; | |
| 216 } | |
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217 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
| 0 | 218 thread->set_vm_result(obj); |
| 219 IRT_END | |
| 220 | |
| 221 | |
| 222 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 223 assert(obj->is_oop(), "must be a valid oop"); | |
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224 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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225 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 226 IRT_END |
| 227 | |
| 228 | |
| 229 // Quicken instance-of and check-cast bytecodes | |
| 230 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) | |
| 231 // Force resolving; quicken the bytecode | |
| 1565 | 232 int which = get_index_u2(thread, Bytecodes::_checkcast); |
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233 ConstantPool* cpool = method(thread)->constants(); |
| 0 | 234 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
| 235 // program we might have seen an unquick'd bytecode in the interpreter but have another | |
| 236 // thread quicken the bytecode before we get here. | |
| 237 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); | |
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238 Klass* klass = cpool->klass_at(which, CHECK); |
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239 thread->set_vm_result_2(klass); |
| 0 | 240 IRT_END |
| 241 | |
| 242 | |
| 243 //------------------------------------------------------------------------------------------------------------------------ | |
| 244 // Exceptions | |
| 245 | |
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246 void InterpreterRuntime::note_trap_inner(JavaThread* thread, int reason, |
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247 methodHandle trap_method, int trap_bci, TRAPS) { |
| 0 | 248 if (trap_method.not_null()) { |
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249 MethodData* trap_mdo = trap_method->method_data(); |
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250 if (trap_mdo == NULL) { |
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251 Method::build_interpreter_method_data(trap_method, THREAD); |
| 0 | 252 if (HAS_PENDING_EXCEPTION) { |
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253 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), |
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254 "we expect only an OOM error here"); |
| 0 | 255 CLEAR_PENDING_EXCEPTION; |
| 256 } | |
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257 trap_mdo = trap_method->method_data(); |
| 0 | 258 // and fall through... |
| 259 } | |
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260 if (trap_mdo != NULL) { |
| 0 | 261 // Update per-method count of trap events. The interpreter |
| 262 // is updating the MDO to simulate the effect of compiler traps. | |
| 263 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); | |
| 264 } | |
| 265 } | |
| 266 } | |
| 267 | |
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268 // Assume the compiler is (or will be) interested in this event. |
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269 // If necessary, create an MDO to hold the information, and record it. |
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270 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { |
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271 assert(ProfileTraps, "call me only if profiling"); |
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272 methodHandle trap_method(thread, method(thread)); |
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273 int trap_bci = trap_method->bci_from(bcp(thread)); |
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274 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); |
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275 } |
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276 |
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277 #ifdef CC_INTERP |
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278 // As legacy note_trap, but we have more arguments. |
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279 IRT_ENTRY(void, InterpreterRuntime::note_trap(JavaThread* thread, int reason, Method *method, int trap_bci)) |
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280 methodHandle trap_method(method); |
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281 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); |
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282 IRT_END |
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283 |
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284 // Class Deoptimization is not visible in BytecodeInterpreter, so we need a wrapper |
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285 // for each exception. |
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286 void InterpreterRuntime::note_nullCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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287 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_null_check, method, trap_bci); } |
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288 void InterpreterRuntime::note_div0Check_trap(JavaThread* thread, Method *method, int trap_bci) |
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289 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_div0_check, method, trap_bci); } |
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290 void InterpreterRuntime::note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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291 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_range_check, method, trap_bci); } |
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292 void InterpreterRuntime::note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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293 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_class_check, method, trap_bci); } |
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294 void InterpreterRuntime::note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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295 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_array_check, method, trap_bci); } |
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296 #endif // CC_INTERP |
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297 |
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298 |
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299 static Handle get_preinitialized_exception(Klass* k, TRAPS) { |
| 0 | 300 // get klass |
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301 InstanceKlass* klass = InstanceKlass::cast(k); |
| 0 | 302 assert(klass->is_initialized(), |
| 303 "this klass should have been initialized during VM initialization"); | |
| 304 // create instance - do not call constructor since we may have no | |
| 305 // (java) stack space left (should assert constructor is empty) | |
| 306 Handle exception; | |
| 307 oop exception_oop = klass->allocate_instance(CHECK_(exception)); | |
| 308 exception = Handle(THREAD, exception_oop); | |
| 309 if (StackTraceInThrowable) { | |
| 310 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 311 } | |
| 312 return exception; | |
| 313 } | |
| 314 | |
| 315 // Special handling for stack overflow: since we don't have any (java) stack | |
| 316 // space left we use the pre-allocated & pre-initialized StackOverflowError | |
| 317 // klass to create an stack overflow error instance. We do not call its | |
| 318 // constructor for the same reason (it is empty, anyway). | |
| 319 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 320 Handle exception = get_preinitialized_exception( | |
| 321 SystemDictionary::StackOverflowError_klass(), | |
| 322 CHECK); | |
| 323 THROW_HANDLE(exception); | |
| 324 IRT_END | |
| 325 | |
| 326 | |
| 327 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) | |
| 328 // lookup exception klass | |
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329 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 330 if (ProfileTraps) { |
| 331 if (s == vmSymbols::java_lang_ArithmeticException()) { | |
| 332 note_trap(thread, Deoptimization::Reason_div0_check, CHECK); | |
| 333 } else if (s == vmSymbols::java_lang_NullPointerException()) { | |
| 334 note_trap(thread, Deoptimization::Reason_null_check, CHECK); | |
| 335 } | |
| 336 } | |
| 337 // create exception | |
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338 Handle exception = Exceptions::new_exception(thread, s, message); |
| 0 | 339 thread->set_vm_result(exception()); |
| 340 IRT_END | |
| 341 | |
| 342 | |
| 343 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) | |
| 344 ResourceMark rm(thread); | |
| 6983 | 345 const char* klass_name = obj->klass()->external_name(); |
| 0 | 346 // lookup exception klass |
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347 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 348 if (ProfileTraps) { |
| 349 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
| 350 } | |
| 351 // create exception, with klass name as detail message | |
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352 Handle exception = Exceptions::new_exception(thread, s, klass_name); |
| 0 | 353 thread->set_vm_result(exception()); |
| 354 IRT_END | |
| 355 | |
| 356 | |
| 357 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) | |
| 358 char message[jintAsStringSize]; | |
| 359 // lookup exception klass | |
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360 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 361 if (ProfileTraps) { |
| 362 note_trap(thread, Deoptimization::Reason_range_check, CHECK); | |
| 363 } | |
| 364 // create exception | |
| 365 sprintf(message, "%d", index); | |
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366 THROW_MSG(s, message); |
| 0 | 367 IRT_END |
| 368 | |
| 369 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( | |
| 370 JavaThread* thread, oopDesc* obj)) | |
| 371 | |
| 372 ResourceMark rm(thread); | |
| 373 char* message = SharedRuntime::generate_class_cast_message( | |
| 6983 | 374 thread, obj->klass()->external_name()); |
| 0 | 375 |
| 376 if (ProfileTraps) { | |
| 377 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
| 378 } | |
| 379 | |
| 380 // create exception | |
| 381 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); | |
| 382 IRT_END | |
| 383 | |
| 384 // exception_handler_for_exception(...) returns the continuation address, | |
| 385 // the exception oop (via TLS) and sets the bci/bcp for the continuation. | |
| 386 // The exception oop is returned to make sure it is preserved over GC (it | |
| 387 // is only on the stack if the exception was thrown explicitly via athrow). | |
| 388 // During this operation, the expression stack contains the values for the | |
| 389 // bci where the exception happened. If the exception was propagated back | |
| 390 // from a call, the expression stack contains the values for the bci at the | |
| 391 // invoke w/o arguments (i.e., as if one were inside the call). | |
| 392 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) | |
| 393 | |
| 394 Handle h_exception(thread, exception); | |
| 395 methodHandle h_method (thread, method(thread)); | |
| 396 constantPoolHandle h_constants(thread, h_method->constants()); | |
| 397 bool should_repeat; | |
| 398 int handler_bci; | |
| 1602 | 399 int current_bci = bci(thread); |
| 0 | 400 |
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401 if (thread->frames_to_pop_failed_realloc() > 0) { |
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402 // Allocation of scalar replaced object used in this frame |
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403 // failed. Unconditionally pop the frame. |
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404 thread->dec_frames_to_pop_failed_realloc(); |
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405 thread->set_vm_result(h_exception()); |
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406 // If the method is synchronized we already unlocked the monitor |
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407 // during deoptimization so the interpreter needs to skip it when |
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408 // the frame is popped. |
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409 thread->set_do_not_unlock_if_synchronized(true); |
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410 return Interpreter::remove_activation_entry(); |
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411 } |
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412 |
| 0 | 413 // Need to do this check first since when _do_not_unlock_if_synchronized |
| 414 // is set, we don't want to trigger any classloading which may make calls | |
| 415 // into java, or surprisingly find a matching exception handler for bci 0 | |
| 416 // since at this moment the method hasn't been "officially" entered yet. | |
| 417 if (thread->do_not_unlock_if_synchronized()) { | |
| 418 ResourceMark rm; | |
| 419 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); | |
| 420 thread->set_vm_result(exception); | |
| 421 #ifdef CC_INTERP | |
| 422 return (address) -1; | |
| 423 #else | |
| 424 return Interpreter::remove_activation_entry(); | |
| 425 #endif | |
| 426 } | |
| 427 | |
| 428 do { | |
| 429 should_repeat = false; | |
| 430 | |
| 431 // assertions | |
| 432 #ifdef ASSERT | |
| 433 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); | |
| 434 assert(h_exception->is_oop(), "just checking"); | |
| 435 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError | |
| 1142 | 436 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
| 0 | 437 if (ExitVMOnVerifyError) vm_exit(-1); |
| 438 ShouldNotReachHere(); | |
| 439 } | |
| 440 #endif | |
| 441 | |
| 442 // tracing | |
| 443 if (TraceExceptions) { | |
| 444 ttyLocker ttyl; | |
| 445 ResourceMark rm(thread); | |
| 446 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception()); | |
| 447 tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string()); | |
| 448 tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread); | |
| 449 } | |
| 450 // Don't go paging in something which won't be used. | |
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451 // else if (extable->length() == 0) { |
| 0 | 452 // // disabled for now - interpreter is not using shortcut yet |
| 453 // // (shortcut is not to call runtime if we have no exception handlers) | |
| 454 // // warning("performance bug: should not call runtime if method has no exception handlers"); | |
| 455 // } | |
| 456 // for AbortVMOnException flag | |
| 457 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); | |
| 458 | |
| 459 // exception handler lookup | |
| 460 KlassHandle h_klass(THREAD, h_exception->klass()); | |
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461 handler_bci = Method::fast_exception_handler_bci_for(h_method, h_klass, current_bci, THREAD); |
| 0 | 462 if (HAS_PENDING_EXCEPTION) { |
| 463 // We threw an exception while trying to find the exception handler. | |
| 464 // Transfer the new exception to the exception handle which will | |
| 465 // be set into thread local storage, and do another lookup for an | |
| 466 // exception handler for this exception, this time starting at the | |
| 467 // BCI of the exception handler which caused the exception to be | |
| 468 // thrown (bug 4307310). | |
| 469 h_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 470 CLEAR_PENDING_EXCEPTION; | |
| 471 if (handler_bci >= 0) { | |
| 472 current_bci = handler_bci; | |
| 473 should_repeat = true; | |
| 474 } | |
| 475 } | |
| 476 } while (should_repeat == true); | |
| 477 | |
| 478 // notify JVMTI of an exception throw; JVMTI will detect if this is a first | |
| 479 // time throw or a stack unwinding throw and accordingly notify the debugger | |
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480 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 481 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
| 482 } | |
| 483 | |
| 484 #ifdef CC_INTERP | |
| 485 address continuation = (address)(intptr_t) handler_bci; | |
| 486 #else | |
| 487 address continuation = NULL; | |
| 488 #endif | |
| 489 address handler_pc = NULL; | |
| 490 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { | |
| 491 // Forward exception to callee (leaving bci/bcp untouched) because (a) no | |
| 492 // handler in this method, or (b) after a stack overflow there is not yet | |
| 493 // enough stack space available to reprotect the stack. | |
| 494 #ifndef CC_INTERP | |
| 495 continuation = Interpreter::remove_activation_entry(); | |
| 496 #endif | |
| 497 // Count this for compilation purposes | |
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498 h_method->interpreter_throwout_increment(THREAD); |
| 0 | 499 } else { |
| 500 // handler in this method => change bci/bcp to handler bci/bcp and continue there | |
| 501 handler_pc = h_method->code_base() + handler_bci; | |
| 502 #ifndef CC_INTERP | |
| 503 set_bcp_and_mdp(handler_pc, thread); | |
| 504 continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; | |
| 505 #endif | |
| 506 } | |
| 507 // notify debugger of an exception catch | |
| 508 // (this is good for exceptions caught in native methods as well) | |
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509 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 510 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
| 511 } | |
| 512 | |
| 513 thread->set_vm_result(h_exception()); | |
| 514 return continuation; | |
| 515 IRT_END | |
| 516 | |
| 517 | |
| 518 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) | |
| 519 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); | |
| 520 // nothing to do - eventually we should remove this code entirely (see comments @ call sites) | |
| 521 IRT_END | |
| 522 | |
| 523 | |
| 524 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 525 THROW(vmSymbols::java_lang_AbstractMethodError()); | |
| 526 IRT_END | |
| 527 | |
| 528 | |
| 529 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) | |
| 530 THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); | |
| 531 IRT_END | |
| 532 | |
| 533 | |
| 534 //------------------------------------------------------------------------------------------------------------------------ | |
| 535 // Fields | |
| 536 // | |
| 537 | |
| 538 IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode)) | |
| 539 // resolve field | |
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540 fieldDescriptor info; |
| 0 | 541 constantPoolHandle pool(thread, method(thread)->constants()); |
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542 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic); |
| 0 | 543 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
| 544 | |
| 545 { | |
| 546 JvmtiHideSingleStepping jhss(thread); | |
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547 LinkResolver::resolve_field_access(info, pool, get_index_u2_cpcache(thread, bytecode), |
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548 bytecode, CHECK); |
| 0 | 549 } // end JvmtiHideSingleStepping |
| 550 | |
| 551 // check if link resolution caused cpCache to be updated | |
| 552 if (already_resolved(thread)) return; | |
| 553 | |
| 554 // compute auxiliary field attributes | |
| 555 TosState state = as_TosState(info.field_type()); | |
| 556 | |
| 557 // We need to delay resolving put instructions on final fields | |
| 558 // until we actually invoke one. This is required so we throw | |
| 559 // exceptions at the correct place. If we do not resolve completely | |
| 560 // in the current pass, leaving the put_code set to zero will | |
| 561 // cause the next put instruction to reresolve. | |
| 562 Bytecodes::Code put_code = (Bytecodes::Code)0; | |
| 563 | |
| 564 // We also need to delay resolving getstatic instructions until the | |
| 565 // class is intitialized. This is required so that access to the static | |
| 566 // field will call the initialization function every time until the class | |
| 567 // is completely initialized ala. in 2.17.5 in JVM Specification. | |
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568 InstanceKlass* klass = InstanceKlass::cast(info.field_holder()); |
| 0 | 569 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) && |
| 570 !klass->is_initialized()); | |
| 571 Bytecodes::Code get_code = (Bytecodes::Code)0; | |
| 572 | |
| 573 if (!uninitialized_static) { | |
| 574 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); | |
| 575 if (is_put || !info.access_flags().is_final()) { | |
| 576 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 cache_entry(thread)->set_field( | |
| 581 get_code, | |
| 582 put_code, | |
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583 info.field_holder(), |
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584 info.index(), |
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585 info.offset(), |
| 0 | 586 state, |
| 587 info.access_flags().is_final(), | |
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588 info.access_flags().is_volatile(), |
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589 pool->pool_holder() |
| 0 | 590 ); |
| 591 IRT_END | |
| 592 | |
| 593 | |
| 594 //------------------------------------------------------------------------------------------------------------------------ | |
| 595 // Synchronization | |
| 596 // | |
| 597 // The interpreter's synchronization code is factored out so that it can | |
| 598 // be shared by method invocation and synchronized blocks. | |
| 599 //%note synchronization_3 | |
| 600 | |
| 601 //%note monitor_1 | |
| 602 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) | |
| 603 #ifdef ASSERT | |
| 604 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 605 #endif | |
| 606 if (PrintBiasedLockingStatistics) { | |
| 607 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 608 } | |
| 609 Handle h_obj(thread, elem->obj()); | |
| 610 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
| 611 "must be NULL or an object"); | |
| 612 if (UseBiasedLocking) { | |
| 613 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 614 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); | |
| 615 } else { | |
| 616 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); | |
| 617 } | |
| 618 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), | |
| 619 "must be NULL or an object"); | |
| 620 #ifdef ASSERT | |
| 621 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 622 #endif | |
| 623 IRT_END | |
| 624 | |
| 625 | |
| 626 //%note monitor_1 | |
| 627 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) | |
| 628 #ifdef ASSERT | |
| 629 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 630 #endif | |
| 631 Handle h_obj(thread, elem->obj()); | |
| 632 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
| 633 "must be NULL or an object"); | |
| 634 if (elem == NULL || h_obj()->is_unlocked()) { | |
| 635 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
| 636 } | |
| 637 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); | |
| 638 // Free entry. This must be done here, since a pending exception might be installed on | |
| 639 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. | |
| 640 elem->set_obj(NULL); | |
| 641 #ifdef ASSERT | |
| 642 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 643 #endif | |
| 644 IRT_END | |
| 645 | |
| 646 | |
| 647 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) | |
| 648 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
| 649 IRT_END | |
| 650 | |
| 651 | |
| 652 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) | |
| 653 // Returns an illegal exception to install into the current thread. The | |
| 654 // pending_exception flag is cleared so normal exception handling does not | |
| 655 // trigger. Any current installed exception will be overwritten. This | |
| 656 // method will be called during an exception unwind. | |
| 657 | |
| 658 assert(!HAS_PENDING_EXCEPTION, "no pending exception"); | |
| 659 Handle exception(thread, thread->vm_result()); | |
| 660 assert(exception() != NULL, "vm result should be set"); | |
| 661 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) | |
| 1142 | 662 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
| 0 | 663 exception = get_preinitialized_exception( |
| 664 SystemDictionary::IllegalMonitorStateException_klass(), | |
| 665 CATCH); | |
| 666 } | |
| 667 thread->set_vm_result(exception()); | |
| 668 IRT_END | |
| 669 | |
| 670 | |
| 671 //------------------------------------------------------------------------------------------------------------------------ | |
| 672 // Invokes | |
| 673 | |
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674 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) |
| 0 | 675 return method->orig_bytecode_at(method->bci_from(bcp)); |
| 676 IRT_END | |
| 677 | |
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678 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) |
| 0 | 679 method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
| 680 IRT_END | |
| 681 | |
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682 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) |
| 0 | 683 JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
| 684 IRT_END | |
| 685 | |
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686 IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 0 | 687 // extract receiver from the outgoing argument list if necessary |
| 688 Handle receiver(thread, NULL); | |
| 689 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) { | |
| 690 ResourceMark rm(thread); | |
| 691 methodHandle m (thread, method(thread)); | |
| 2142 | 692 Bytecode_invoke call(m, bci(thread)); |
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693 Symbol* signature = call.signature(); |
| 0 | 694 receiver = Handle(thread, |
| 695 thread->last_frame().interpreter_callee_receiver(signature)); | |
| 696 assert(Universe::heap()->is_in_reserved_or_null(receiver()), | |
| 697 "sanity check"); | |
| 698 assert(receiver.is_null() || | |
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699 !Universe::heap()->is_in_reserved(receiver->klass()), |
| 0 | 700 "sanity check"); |
| 701 } | |
| 702 | |
| 703 // resolve method | |
| 704 CallInfo info; | |
| 705 constantPoolHandle pool(thread, method(thread)->constants()); | |
| 706 | |
| 707 { | |
| 708 JvmtiHideSingleStepping jhss(thread); | |
| 709 LinkResolver::resolve_invoke(info, receiver, pool, | |
| 1565 | 710 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 0 | 711 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
| 712 int retry_count = 0; | |
| 713 while (info.resolved_method()->is_old()) { | |
| 714 // It is very unlikely that method is redefined more than 100 times | |
| 715 // in the middle of resolve. If it is looping here more than 100 times | |
| 716 // means then there could be a bug here. | |
| 717 guarantee((retry_count++ < 100), | |
| 718 "Could not resolve to latest version of redefined method"); | |
| 719 // method is redefined in the middle of resolve so re-try. | |
| 720 LinkResolver::resolve_invoke(info, receiver, pool, | |
| 1565 | 721 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 0 | 722 } |
| 723 } | |
| 724 } // end JvmtiHideSingleStepping | |
| 725 | |
| 726 // check if link resolution caused cpCache to be updated | |
| 727 if (already_resolved(thread)) return; | |
| 728 | |
| 729 if (bytecode == Bytecodes::_invokeinterface) { | |
| 730 if (TraceItables && Verbose) { | |
| 731 ResourceMark rm(thread); | |
| 732 tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string()); | |
| 733 } | |
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734 } |
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735 #ifdef ASSERT |
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736 if (bytecode == Bytecodes::_invokeinterface) { |
| 0 | 737 if (info.resolved_method()->method_holder() == |
| 1142 | 738 SystemDictionary::Object_klass()) { |
| 0 | 739 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
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740 // (see also CallInfo::set_interface for details) |
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741 assert(info.call_kind() == CallInfo::vtable_call || |
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742 info.call_kind() == CallInfo::direct_call, ""); |
| 0 | 743 methodHandle rm = info.resolved_method(); |
| 744 assert(rm->is_final() || info.has_vtable_index(), | |
| 745 "should have been set already"); | |
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746 } else if (!info.resolved_method()->has_itable_index()) { |
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747 // Resolved something like CharSequence.toString. Use vtable not itable. |
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748 assert(info.call_kind() != CallInfo::itable_call, ""); |
| 0 | 749 } else { |
| 750 // Setup itable entry | |
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751 assert(info.call_kind() == CallInfo::itable_call, ""); |
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752 int index = info.resolved_method()->itable_index(); |
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753 assert(info.itable_index() == index, ""); |
| 0 | 754 } |
| 755 } else { | |
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756 assert(info.call_kind() == CallInfo::direct_call || |
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757 info.call_kind() == CallInfo::vtable_call, ""); |
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758 } |
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759 #endif |
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760 switch (info.call_kind()) { |
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761 case CallInfo::direct_call: |
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762 cache_entry(thread)->set_direct_call( |
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763 bytecode, |
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764 info.resolved_method()); |
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765 break; |
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766 case CallInfo::vtable_call: |
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767 cache_entry(thread)->set_vtable_call( |
| 0 | 768 bytecode, |
| 769 info.resolved_method(), | |
| 770 info.vtable_index()); | |
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771 break; |
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772 case CallInfo::itable_call: |
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773 cache_entry(thread)->set_itable_call( |
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774 bytecode, |
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775 info.resolved_method(), |
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776 info.itable_index()); |
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777 break; |
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778 default: ShouldNotReachHere(); |
| 0 | 779 } |
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780 } |
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781 IRT_END |
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782 |
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783 |
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784 // First time execution: Resolve symbols, create a permanent MethodType object. |
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785 IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) { |
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786 assert(EnableInvokeDynamic, ""); |
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787 const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
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788 |
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789 // resolve method |
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790 CallInfo info; |
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791 constantPoolHandle pool(thread, method(thread)->constants()); |
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792 |
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793 { |
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794 JvmtiHideSingleStepping jhss(thread); |
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795 LinkResolver::resolve_invoke(info, Handle(), pool, |
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796 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
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797 } // end JvmtiHideSingleStepping |
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798 |
|
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799 cache_entry(thread)->set_method_handle(pool, info); |
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800 } |
| 0 | 801 IRT_END |
| 802 | |
| 803 | |
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804 // First time execution: Resolve symbols, create a permanent CallSite object. |
|
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805 IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) { |
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806 assert(EnableInvokeDynamic, ""); |
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807 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
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808 |
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809 //TO DO: consider passing BCI to Java. |
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810 // int caller_bci = method(thread)->bci_from(bcp(thread)); |
|
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811 |
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812 // resolve method |
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813 CallInfo info; |
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814 constantPoolHandle pool(thread, method(thread)->constants()); |
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815 int index = get_index_u4(thread, bytecode); |
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816 { |
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817 JvmtiHideSingleStepping jhss(thread); |
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818 LinkResolver::resolve_invoke(info, Handle(), pool, |
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819 index, bytecode, CHECK); |
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820 } // end JvmtiHideSingleStepping |
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821 |
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822 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); |
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823 cp_cache_entry->set_dynamic_call(pool, info); |
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824 } |
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825 IRT_END |
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826 |
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827 |
| 0 | 828 //------------------------------------------------------------------------------------------------------------------------ |
| 829 // Miscellaneous | |
| 830 | |
| 831 | |
| 941 | 832 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { |
| 833 nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); | |
| 834 assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); | |
| 835 if (branch_bcp != NULL && nm != NULL) { | |
| 836 // This was a successful request for an OSR nmethod. Because | |
| 837 // frequency_counter_overflow_inner ends with a safepoint check, | |
| 838 // nm could have been unloaded so look it up again. It's unsafe | |
| 839 // to examine nm directly since it might have been freed and used | |
| 840 // for something else. | |
| 841 frame fr = thread->last_frame(); | |
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842 Method* method = fr.interpreter_frame_method(); |
| 941 | 843 int bci = method->bci_from(fr.interpreter_frame_bcp()); |
| 1783 | 844 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
| 941 | 845 } |
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846 #ifndef PRODUCT |
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847 if (TraceOnStackReplacement) { |
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848 if (nm != NULL) { |
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849 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry()); |
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850 nm->print(); |
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851 } |
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852 } |
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853 #endif |
| 941 | 854 return nm; |
| 855 } | |
| 856 | |
| 0 | 857 IRT_ENTRY(nmethod*, |
| 941 | 858 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
| 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 frame fr = thread->last_frame(); | |
| 864 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
| 865 methodHandle method(thread, fr.interpreter_frame_method()); | |
| 1783 | 866 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; |
| 867 const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; | |
| 868 | |
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869 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
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870 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
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871 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
| 0 | 872 |
| 1783 | 873 if (osr_nm != NULL) { |
| 874 // We may need to do on-stack replacement which requires that no | |
| 875 // monitors in the activation are biased because their | |
| 876 // BasicObjectLocks will need to migrate during OSR. Force | |
| 877 // unbiasing of all monitors in the activation now (even though | |
| 878 // the OSR nmethod might be invalidated) because we don't have a | |
| 879 // safepoint opportunity later once the migration begins. | |
| 880 if (UseBiasedLocking) { | |
| 881 ResourceMark rm; | |
| 882 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); | |
| 883 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 884 kptr < fr.interpreter_frame_monitor_begin(); | |
| 885 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 886 if( kptr->obj() != NULL ) { | |
| 887 objects_to_revoke->append(Handle(THREAD, kptr->obj())); | |
| 888 } | |
| 0 | 889 } |
| 1783 | 890 BiasedLocking::revoke(objects_to_revoke); |
| 0 | 891 } |
| 892 } | |
| 1783 | 893 return osr_nm; |
| 0 | 894 IRT_END |
| 895 | |
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896 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) |
| 0 | 897 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 898 int bci = method->bci_from(cur_bcp); | |
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899 MethodData* mdo = method->method_data(); |
| 0 | 900 if (mdo == NULL) return 0; |
| 901 return mdo->bci_to_di(bci); | |
| 902 IRT_END | |
| 903 | |
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904 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
| 0 | 905 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 906 // flag, in case this method triggers classloading which will call into Java. | |
| 907 UnlockFlagSaver fs(thread); | |
| 908 | |
| 909 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 910 frame fr = thread->last_frame(); | |
| 911 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
| 912 methodHandle method(thread, fr.interpreter_frame_method()); | |
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913 Method::build_interpreter_method_data(method, THREAD); |
| 0 | 914 if (HAS_PENDING_EXCEPTION) { |
| 915 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
| 916 CLEAR_PENDING_EXCEPTION; | |
| 917 // and fall through... | |
| 918 } | |
| 919 IRT_END | |
| 920 | |
| 921 | |
| 922 #ifdef ASSERT | |
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923 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) |
| 0 | 924 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 925 | |
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926 MethodData* mdo = method->method_data(); |
| 0 | 927 assert(mdo != NULL, "must not be null"); |
| 928 | |
| 929 int bci = method->bci_from(bcp); | |
| 930 | |
| 931 address mdp2 = mdo->bci_to_dp(bci); | |
| 932 if (mdp != mdp2) { | |
| 933 ResourceMark rm; | |
| 934 ResetNoHandleMark rnm; // In a LEAF entry. | |
| 935 HandleMark hm; | |
| 936 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); | |
| 937 int current_di = mdo->dp_to_di(mdp); | |
| 938 int expected_di = mdo->dp_to_di(mdp2); | |
| 939 tty->print_cr(" actual di %d expected di %d", current_di, expected_di); | |
| 940 int expected_approx_bci = mdo->data_at(expected_di)->bci(); | |
| 941 int approx_bci = -1; | |
| 942 if (current_di >= 0) { | |
| 943 approx_bci = mdo->data_at(current_di)->bci(); | |
| 944 } | |
| 945 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); | |
| 946 mdo->print_on(tty); | |
| 947 method->print_codes(); | |
| 948 } | |
| 949 assert(mdp == mdp2, "wrong mdp"); | |
| 950 IRT_END | |
| 951 #endif // ASSERT | |
| 952 | |
| 953 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) | |
| 954 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 955 ResourceMark rm(thread); | |
| 956 HandleMark hm(thread); | |
| 957 frame fr = thread->last_frame(); | |
| 958 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
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959 MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); |
| 0 | 960 |
| 961 // Grab a lock to ensure atomic access to setting the return bci and | |
| 962 // the displacement. This can block and GC, invalidating all naked oops. | |
| 963 MutexLocker ml(RetData_lock); | |
| 964 | |
| 965 // ProfileData is essentially a wrapper around a derived oop, so we | |
| 966 // need to take the lock before making any ProfileData structures. | |
| 967 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); | |
| 968 RetData* rdata = data->as_RetData(); | |
| 969 address new_mdp = rdata->fixup_ret(return_bci, h_mdo); | |
| 970 fr.interpreter_frame_set_mdp(new_mdp); | |
| 971 IRT_END | |
| 972 | |
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973 IRT_ENTRY(MethodCounters*, InterpreterRuntime::build_method_counters(JavaThread* thread, Method* m)) |
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974 MethodCounters* mcs = Method::build_method_counters(m, thread); |
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975 if (HAS_PENDING_EXCEPTION) { |
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976 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); |
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977 CLEAR_PENDING_EXCEPTION; |
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978 } |
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979 return mcs; |
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980 IRT_END |
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981 |
| 0 | 982 |
| 983 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) | |
| 984 // We used to need an explict preserve_arguments here for invoke bytecodes. However, | |
| 985 // stack traversal automatically takes care of preserving arguments for invoke, so | |
| 986 // this is no longer needed. | |
| 987 | |
| 988 // IRT_END does an implicit safepoint check, hence we are guaranteed to block | |
| 989 // if this is called during a safepoint | |
| 990 | |
| 991 if (JvmtiExport::should_post_single_step()) { | |
| 992 // We are called during regular safepoints and when the VM is | |
| 993 // single stepping. If any thread is marked for single stepping, | |
| 994 // then we may have JVMTI work to do. | |
| 995 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); | |
| 996 } | |
| 997 IRT_END | |
| 998 | |
| 999 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, | |
| 1000 ConstantPoolCacheEntry *cp_entry)) | |
| 1001 | |
| 1002 // check the access_flags for the field in the klass | |
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1003 |
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1004 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); |
| 0 | 1005 int index = cp_entry->field_index(); |
| 3938 | 1006 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
| 0 | 1007 |
| 1008 switch(cp_entry->flag_state()) { | |
| 1009 case btos: // fall through | |
| 1010 case ctos: // fall through | |
| 1011 case stos: // fall through | |
| 1012 case itos: // fall through | |
| 1013 case ftos: // fall through | |
| 1014 case ltos: // fall through | |
| 1015 case dtos: // fall through | |
| 1016 case atos: break; | |
| 1017 default: ShouldNotReachHere(); return; | |
| 1018 } | |
| 1019 bool is_static = (obj == NULL); | |
| 1020 HandleMark hm(thread); | |
| 1021 | |
| 1022 Handle h_obj; | |
| 1023 if (!is_static) { | |
| 1024 // non-static field accessors have an object, but we need a handle | |
| 1025 h_obj = Handle(thread, obj); | |
| 1026 } | |
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1027 instanceKlassHandle h_cp_entry_f1(thread, (Klass*)cp_entry->f1_as_klass()); |
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1028 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static); |
| 0 | 1029 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid); |
| 1030 IRT_END | |
| 1031 | |
| 1032 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, | |
| 1033 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) | |
| 1034 | |
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1035 Klass* k = (Klass*)cp_entry->f1_as_klass(); |
| 0 | 1036 |
| 1037 // check the access_flags for the field in the klass | |
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1038 InstanceKlass* ik = InstanceKlass::cast(k); |
| 0 | 1039 int index = cp_entry->field_index(); |
| 1040 // bail out if field modifications are not watched | |
| 3938 | 1041 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
| 0 | 1042 |
| 1043 char sig_type = '\0'; | |
| 1044 | |
| 1045 switch(cp_entry->flag_state()) { | |
| 1046 case btos: sig_type = 'Z'; break; | |
| 1047 case ctos: sig_type = 'C'; break; | |
| 1048 case stos: sig_type = 'S'; break; | |
| 1049 case itos: sig_type = 'I'; break; | |
| 1050 case ftos: sig_type = 'F'; break; | |
| 1051 case atos: sig_type = 'L'; break; | |
| 1052 case ltos: sig_type = 'J'; break; | |
| 1053 case dtos: sig_type = 'D'; break; | |
| 1054 default: ShouldNotReachHere(); return; | |
| 1055 } | |
| 1056 bool is_static = (obj == NULL); | |
| 1057 | |
| 1058 HandleMark hm(thread); | |
| 1059 instanceKlassHandle h_klass(thread, k); | |
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1060 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static); |
| 0 | 1061 jvalue fvalue; |
| 1062 #ifdef _LP64 | |
| 1063 fvalue = *value; | |
| 1064 #else | |
| 1065 // Long/double values are stored unaligned and also noncontiguously with | |
| 1066 // tagged stacks. We can't just do a simple assignment even in the non- | |
| 1067 // J/D cases because a C++ compiler is allowed to assume that a jvalue is | |
| 1068 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. | |
| 1069 // We assume that the two halves of longs/doubles are stored in interpreter | |
| 1070 // stack slots in platform-endian order. | |
| 1071 jlong_accessor u; | |
| 1072 jint* newval = (jint*)value; | |
| 1073 u.words[0] = newval[0]; | |
| 1506 | 1074 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
| 0 | 1075 fvalue.j = u.long_value; |
| 1076 #endif // _LP64 | |
| 1077 | |
| 1078 Handle h_obj; | |
| 1079 if (!is_static) { | |
| 1080 // non-static field accessors have an object, but we need a handle | |
| 1081 h_obj = Handle(thread, obj); | |
| 1082 } | |
| 1083 | |
| 1084 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj, | |
| 1085 fid, sig_type, &fvalue); | |
| 1086 IRT_END | |
| 1087 | |
| 1088 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) | |
| 1089 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
| 1090 IRT_END | |
| 1091 | |
| 1092 | |
| 1093 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) | |
| 1094 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
| 1095 IRT_END | |
| 1096 | |
| 1097 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) | |
| 1098 { | |
| 1099 return (Interpreter::contains(pc) ? 1 : 0); | |
| 1100 } | |
| 1101 IRT_END | |
| 1102 | |
| 1103 | |
| 1104 // Implementation of SignatureHandlerLibrary | |
| 1105 | |
| 1106 address SignatureHandlerLibrary::set_handler_blob() { | |
| 1107 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); | |
| 1108 if (handler_blob == NULL) { | |
| 1109 return NULL; | |
| 1110 } | |
| 1748 | 1111 address handler = handler_blob->code_begin(); |
| 0 | 1112 _handler_blob = handler_blob; |
| 1113 _handler = handler; | |
| 1114 return handler; | |
| 1115 } | |
| 1116 | |
| 1117 void SignatureHandlerLibrary::initialize() { | |
| 1118 if (_fingerprints != NULL) { | |
| 1119 return; | |
| 1120 } | |
| 1121 if (set_handler_blob() == NULL) { | |
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1122 vm_exit_out_of_memory(blob_size, OOM_MALLOC_ERROR, "native signature handlers"); |
| 0 | 1123 } |
| 1124 | |
| 1125 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", | |
| 1126 SignatureHandlerLibrary::buffer_size); | |
| 1748 | 1127 _buffer = bb->code_begin(); |
| 0 | 1128 |
| 6197 | 1129 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
| 1130 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); | |
| 0 | 1131 } |
| 1132 | |
| 1133 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { | |
| 1134 address handler = _handler; | |
| 1748 | 1135 int insts_size = buffer->pure_insts_size(); |
| 1136 if (handler + insts_size > _handler_blob->code_end()) { | |
| 0 | 1137 // get a new handler blob |
| 1138 handler = set_handler_blob(); | |
| 1139 } | |
| 1140 if (handler != NULL) { | |
| 1748 | 1141 memcpy(handler, buffer->insts_begin(), insts_size); |
| 0 | 1142 pd_set_handler(handler); |
| 1748 | 1143 ICache::invalidate_range(handler, insts_size); |
| 1144 _handler = handler + insts_size; | |
| 0 | 1145 } |
| 1146 return handler; | |
| 1147 } | |
| 1148 | |
| 1149 void SignatureHandlerLibrary::add(methodHandle method) { | |
| 1150 if (method->signature_handler() == NULL) { | |
| 1151 // use slow signature handler if we can't do better | |
| 1152 int handler_index = -1; | |
| 1153 // check if we can use customized (fast) signature handler | |
| 1154 if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { | |
| 1155 // use customized signature handler | |
| 1156 MutexLocker mu(SignatureHandlerLibrary_lock); | |
| 1157 // make sure data structure is initialized | |
| 1158 initialize(); | |
| 1159 // lookup method signature's fingerprint | |
| 1160 uint64_t fingerprint = Fingerprinter(method).fingerprint(); | |
| 1161 handler_index = _fingerprints->find(fingerprint); | |
| 1162 // create handler if necessary | |
| 1163 if (handler_index < 0) { | |
| 1164 ResourceMark rm; | |
| 1165 ptrdiff_t align_offset = (address) | |
| 1166 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer; | |
| 1167 CodeBuffer buffer((address)(_buffer + align_offset), | |
| 1168 SignatureHandlerLibrary::buffer_size - align_offset); | |
| 1169 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); | |
| 1170 // copy into code heap | |
| 1171 address handler = set_handler(&buffer); | |
| 1172 if (handler == NULL) { | |
| 1173 // use slow signature handler | |
| 1174 } else { | |
| 1175 // debugging suppport | |
| 1176 if (PrintSignatureHandlers) { | |
| 1177 tty->cr(); | |
| 1178 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", | |
| 1179 _handlers->length(), | |
| 1180 (method->is_static() ? "static" : "receiver"), | |
| 1181 method->name_and_sig_as_C_string(), | |
| 1182 fingerprint, | |
| 1748 | 1183 buffer.insts_size()); |
| 1184 Disassembler::decode(handler, handler + buffer.insts_size()); | |
| 0 | 1185 #ifndef PRODUCT |
| 1186 tty->print_cr(" --- associated result handler ---"); | |
| 1187 address rh_begin = Interpreter::result_handler(method()->result_type()); | |
| 1188 address rh_end = rh_begin; | |
| 1189 while (*(int*)rh_end != 0) { | |
| 1190 rh_end += sizeof(int); | |
| 1191 } | |
| 1192 Disassembler::decode(rh_begin, rh_end); | |
| 1193 #endif | |
| 1194 } | |
| 1195 // add handler to library | |
| 1196 _fingerprints->append(fingerprint); | |
| 1197 _handlers->append(handler); | |
| 1198 // set handler index | |
| 1199 assert(_fingerprints->length() == _handlers->length(), "sanity check"); | |
| 1200 handler_index = _fingerprints->length() - 1; | |
| 1201 } | |
| 1202 } | |
|
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1203 // Set handler under SignatureHandlerLibrary_lock |
| 0 | 1204 if (handler_index < 0) { |
| 1205 // use generic signature handler | |
| 1206 method->set_signature_handler(Interpreter::slow_signature_handler()); | |
| 1207 } else { | |
| 1208 // set handler | |
| 1209 method->set_signature_handler(_handlers->at(handler_index)); | |
| 1210 } | |
|
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1211 } else { |
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1212 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
|
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1213 // use generic signature handler |
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1214 method->set_signature_handler(Interpreter::slow_signature_handler()); |
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1215 } |
| 0 | 1216 } |
|
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1217 #ifdef ASSERT |
|
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1218 int handler_index = -1; |
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1219 int fingerprint_index = -2; |
|
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1220 { |
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1221 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
|
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1222 // in any way if accessed from multiple threads. To avoid races with another |
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1223 // thread which may change the arrays in the above, mutex protected block, we |
|
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1224 // have to protect this read access here with the same mutex as well! |
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1225 MutexLocker mu(SignatureHandlerLibrary_lock); |
|
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1226 if (_handlers != NULL) { |
|
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1227 handler_index = _handlers->find(method->signature_handler()); |
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1228 fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint()); |
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1229 } |
|
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1230 } |
| 0 | 1231 assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
|
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1232 handler_index == fingerprint_index, "sanity check"); |
|
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1233 #endif // ASSERT |
| 0 | 1234 } |
| 1235 | |
| 1236 | |
| 1237 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; | |
| 1238 address SignatureHandlerLibrary::_handler = NULL; | |
| 1239 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; | |
| 1240 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; | |
| 1241 address SignatureHandlerLibrary::_buffer = NULL; | |
| 1242 | |
| 1243 | |
|
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1244 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) |
| 0 | 1245 methodHandle m(thread, method); |
| 1246 assert(m->is_native(), "sanity check"); | |
| 1247 // lookup native function entry point if it doesn't exist | |
| 1248 bool in_base_library; | |
| 1249 if (!m->has_native_function()) { | |
| 1250 NativeLookup::lookup(m, in_base_library, CHECK); | |
| 1251 } | |
| 1252 // make sure signature handler is installed | |
| 1253 SignatureHandlerLibrary::add(m); | |
| 1254 // The interpreter entry point checks the signature handler first, | |
| 1255 // before trying to fetch the native entry point and klass mirror. | |
| 1256 // We must set the signature handler last, so that multiple processors | |
| 1257 // preparing the same method will be sure to see non-null entry & mirror. | |
| 1258 IRT_END | |
| 1259 | |
|
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1260 #if defined(IA32) || defined(AMD64) || defined(ARM) |
| 0 | 1261 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) |
| 1262 if (src_address == dest_address) { | |
| 1263 return; | |
| 1264 } | |
| 1265 ResetNoHandleMark rnm; // In a LEAF entry. | |
| 1266 HandleMark hm; | |
| 1267 ResourceMark rm; | |
| 1268 frame fr = thread->last_frame(); | |
| 1269 assert(fr.is_interpreted_frame(), ""); | |
| 1270 jint bci = fr.interpreter_frame_bci(); | |
| 1271 methodHandle mh(thread, fr.interpreter_frame_method()); | |
| 2142 | 1272 Bytecode_invoke invoke(mh, bci); |
| 1273 ArgumentSizeComputer asc(invoke.signature()); | |
| 1274 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver | |
|
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1275 Copy::conjoint_jbytes(src_address, dest_address, |
| 1506 | 1276 size_of_arguments * Interpreter::stackElementSize); |
| 0 | 1277 IRT_END |
| 1278 #endif | |
|
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1279 |
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1280 #if INCLUDE_JVMTI |
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1281 // This is a support of the JVMTI PopFrame interface. |
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1282 // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument |
|
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1283 // and return it as a vm_result so that it can be reloaded in the list of invokestatic parameters. |
|
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1284 // The member_name argument is a saved reference (in local#0) to the member_name. |
|
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1285 // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle. |
|
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1286 // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated. |
|
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1287 IRT_ENTRY(void, InterpreterRuntime::member_name_arg_or_null(JavaThread* thread, address member_name, |
|
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1288 Method* method, address bcp)) |
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1289 Bytecodes::Code code = Bytecodes::code_at(method, bcp); |
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1290 if (code != Bytecodes::_invokestatic) { |
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1291 return; |
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1292 } |
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1293 ConstantPool* cpool = method->constants(); |
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1294 int cp_index = Bytes::get_native_u2(bcp + 1) + ConstantPool::CPCACHE_INDEX_TAG; |
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1295 Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index)); |
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1296 Symbol* mname = cpool->name_ref_at(cp_index); |
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1297 |
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1298 if (MethodHandles::has_member_arg(cname, mname)) { |
|
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1299 oop member_name_oop = (oop) member_name; |
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1300 if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) { |
|
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1301 // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated. |
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1302 member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop); |
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1303 } |
|
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1304 thread->set_vm_result(member_name_oop); |
|
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1305 } |
|
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1306 IRT_END |
|
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1307 #endif // INCLUDE_JVMTI |