J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1 | /* |
Jiangli Zhou | 56df3bd | 2012-06-26 19:08:44 -0400 | [diff] [blame] | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 | * |
Erik Trimble | ba7c173 | 2010-05-27 19:08:38 -0700 | [diff] [blame] | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 22 | * |
| 23 | */ |
| 24 | |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 25 | #include "precompiled.hpp" |
| 26 | #include "classfile/systemDictionary.hpp" |
| 27 | #include "classfile/vmSymbols.hpp" |
| 28 | #include "compiler/compileBroker.hpp" |
| 29 | #include "gc_interface/collectedHeap.hpp" |
| 30 | #include "interpreter/interpreter.hpp" |
| 31 | #include "interpreter/interpreterRuntime.hpp" |
| 32 | #include "interpreter/linkResolver.hpp" |
| 33 | #include "interpreter/templateTable.hpp" |
| 34 | #include "memory/oopFactory.hpp" |
| 35 | #include "memory/universe.inline.hpp" |
| 36 | #include "oops/constantPoolOop.hpp" |
| 37 | #include "oops/cpCacheOop.hpp" |
| 38 | #include "oops/instanceKlass.hpp" |
| 39 | #include "oops/methodDataOop.hpp" |
| 40 | #include "oops/objArrayKlass.hpp" |
| 41 | #include "oops/oop.inline.hpp" |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 42 | #include "oops/symbol.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 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 |
Bob Vandette | 31e3fe4 | 2011-02-02 11:35:26 -0500 | [diff] [blame] | 68 | #ifdef TARGET_ARCH_arm |
| 69 | # include "vm_version_arm.hpp" |
| 70 | #endif |
| 71 | #ifdef TARGET_ARCH_ppc |
| 72 | # include "vm_version_ppc.hpp" |
| 73 | #endif |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 74 | #ifdef COMPILER2 |
| 75 | #include "opto/runtime.hpp" |
| 76 | #endif |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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. |
| 101 | methodDataOop mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
| 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 |
| 115 | constantPoolOop pool = method(thread)->constants(); |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 116 | int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 117 | constantTag tag = pool->tag_at(index); |
| 118 | |
| 119 | if (tag.is_unresolved_klass() || tag.is_klass()) { |
| 120 | klassOop klass = pool->klass_at(index, CHECK); |
Tom Rodriguez | 6e8a263 | 2011-03-18 16:00:34 -0700 | [diff] [blame] | 121 | oop java_class = klass->java_mirror(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 122 | thread->set_vm_result(java_class); |
| 123 | } else { |
| 124 | #ifdef ASSERT |
| 125 | // If we entered this runtime routine, we believed the tag contained |
| 126 | // an unresolved string, an unresolved class or a resolved class. |
| 127 | // However, another thread could have resolved the unresolved string |
| 128 | // or class by the time we go there. |
| 129 | assert(tag.is_unresolved_string()|| tag.is_string(), "expected string"); |
| 130 | #endif |
| 131 | oop s_oop = pool->string_at(index, CHECK); |
| 132 | thread->set_vm_result(s_oop); |
| 133 | } |
| 134 | IRT_END |
| 135 | |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 136 | IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 137 | assert(bytecode == Bytecodes::_fast_aldc || |
| 138 | bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); |
| 139 | ResourceMark rm(thread); |
| 140 | methodHandle m (thread, method(thread)); |
Tom Rodriguez | 423f587 | 2011-01-13 22:15:41 -0800 | [diff] [blame] | 141 | Bytecode_loadconstant ldc(m, bci(thread)); |
Tom Rodriguez | f6d95d9 | 2011-05-25 16:04:09 -0700 | [diff] [blame] | 142 | oop result = ldc.resolve_constant(CHECK); |
| 143 | #ifdef ASSERT |
| 144 | { |
| 145 | // The bytecode wrappers aren't GC-safe so construct a new one |
| 146 | Bytecode_loadconstant ldc2(m, bci(thread)); |
| 147 | ConstantPoolCacheEntry* cpce = m->constants()->cache()->entry_at(ldc2.cache_index()); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 148 | assert(result == cpce->f1_as_instance(), "expected result for assembly code"); |
Tom Rodriguez | f6d95d9 | 2011-05-25 16:04:09 -0700 | [diff] [blame] | 149 | } |
| 150 | #endif |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 151 | } |
| 152 | IRT_END |
| 153 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 154 | |
| 155 | //------------------------------------------------------------------------------------------------------------------------ |
| 156 | // Allocation |
| 157 | |
| 158 | IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, constantPoolOopDesc* pool, int index)) |
| 159 | klassOop k_oop = pool->klass_at(index, CHECK); |
| 160 | instanceKlassHandle klass (THREAD, k_oop); |
| 161 | |
| 162 | // Make sure we are not instantiating an abstract klass |
| 163 | klass->check_valid_for_instantiation(true, CHECK); |
| 164 | |
| 165 | // Make sure klass is initialized |
| 166 | klass->initialize(CHECK); |
| 167 | |
| 168 | // At this point the class may not be fully initialized |
| 169 | // because of recursive initialization. If it is fully |
| 170 | // initialized & has_finalized is not set, we rewrite |
| 171 | // it into its fast version (Note: no locking is needed |
| 172 | // here since this is an atomic byte write and can be |
| 173 | // done more than once). |
| 174 | // |
| 175 | // Note: In case of classes with has_finalized we don't |
| 176 | // rewrite since that saves us an extra check in |
| 177 | // the fast version which then would call the |
| 178 | // slow version anyway (and do a call back into |
| 179 | // Java). |
| 180 | // If we have a breakpoint, then we don't rewrite |
| 181 | // because the _breakpoint bytecode would be lost. |
| 182 | oop obj = klass->allocate_instance(CHECK); |
| 183 | thread->set_vm_result(obj); |
| 184 | IRT_END |
| 185 | |
| 186 | |
| 187 | IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) |
| 188 | oop obj = oopFactory::new_typeArray(type, size, CHECK); |
| 189 | thread->set_vm_result(obj); |
| 190 | IRT_END |
| 191 | |
| 192 | |
| 193 | IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, constantPoolOopDesc* pool, int index, jint size)) |
| 194 | // Note: no oopHandle for pool & klass needed since they are not used |
| 195 | // anymore after new_objArray() and no GC can happen before. |
| 196 | // (This may have to change if this code changes!) |
| 197 | klassOop klass = pool->klass_at(index, CHECK); |
| 198 | objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
| 199 | thread->set_vm_result(obj); |
| 200 | IRT_END |
| 201 | |
| 202 | |
| 203 | IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) |
| 204 | // We may want to pass in more arguments - could make this slightly faster |
| 205 | constantPoolOop constants = method(thread)->constants(); |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 206 | int i = get_index_u2(thread, Bytecodes::_multianewarray); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 207 | klassOop klass = constants->klass_at(i, CHECK); |
| 208 | int nof_dims = number_of_dimensions(thread); |
| 209 | assert(oop(klass)->is_klass(), "not a class"); |
| 210 | assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
| 211 | |
| 212 | // We must create an array of jints to pass to multi_allocate. |
| 213 | ResourceMark rm(thread); |
| 214 | const int small_dims = 10; |
| 215 | jint dim_array[small_dims]; |
| 216 | jint *dims = &dim_array[0]; |
| 217 | if (nof_dims > small_dims) { |
| 218 | dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); |
| 219 | } |
| 220 | for (int index = 0; index < nof_dims; index++) { |
| 221 | // offset from first_size_address is addressed as local[index] |
| 222 | int n = Interpreter::local_offset_in_bytes(index)/jintSize; |
| 223 | dims[index] = first_size_address[n]; |
| 224 | } |
| 225 | oop obj = arrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
| 226 | thread->set_vm_result(obj); |
| 227 | IRT_END |
| 228 | |
| 229 | |
| 230 | IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) |
| 231 | assert(obj->is_oop(), "must be a valid oop"); |
| 232 | assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); |
| 233 | instanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 234 | IRT_END |
| 235 | |
| 236 | |
| 237 | // Quicken instance-of and check-cast bytecodes |
| 238 | IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) |
| 239 | // Force resolving; quicken the bytecode |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 240 | int which = get_index_u2(thread, Bytecodes::_checkcast); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 241 | constantPoolOop cpool = method(thread)->constants(); |
| 242 | // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
| 243 | // program we might have seen an unquick'd bytecode in the interpreter but have another |
| 244 | // thread quicken the bytecode before we get here. |
| 245 | // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); |
| 246 | klassOop klass = cpool->klass_at(which, CHECK); |
| 247 | thread->set_vm_result(klass); |
| 248 | IRT_END |
| 249 | |
| 250 | |
| 251 | //------------------------------------------------------------------------------------------------------------------------ |
| 252 | // Exceptions |
| 253 | |
| 254 | // Assume the compiler is (or will be) interested in this event. |
| 255 | // If necessary, create an MDO to hold the information, and record it. |
| 256 | void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { |
| 257 | assert(ProfileTraps, "call me only if profiling"); |
| 258 | methodHandle trap_method(thread, method(thread)); |
John R Rose | 52e3d26 | 2010-09-13 23:24:30 -0700 | [diff] [blame] | 259 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 260 | if (trap_method.not_null()) { |
| 261 | methodDataHandle trap_mdo(thread, trap_method->method_data()); |
| 262 | if (trap_mdo.is_null()) { |
| 263 | methodOopDesc::build_interpreter_method_data(trap_method, THREAD); |
| 264 | if (HAS_PENDING_EXCEPTION) { |
| 265 | assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); |
| 266 | CLEAR_PENDING_EXCEPTION; |
| 267 | } |
| 268 | trap_mdo = methodDataHandle(thread, trap_method->method_data()); |
| 269 | // and fall through... |
| 270 | } |
| 271 | if (trap_mdo.not_null()) { |
| 272 | // Update per-method count of trap events. The interpreter |
| 273 | // is updating the MDO to simulate the effect of compiler traps. |
| 274 | int trap_bci = trap_method->bci_from(bcp(thread)); |
| 275 | Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | static Handle get_preinitialized_exception(klassOop k, TRAPS) { |
| 281 | // get klass |
| 282 | instanceKlass* klass = instanceKlass::cast(k); |
| 283 | assert(klass->is_initialized(), |
| 284 | "this klass should have been initialized during VM initialization"); |
| 285 | // create instance - do not call constructor since we may have no |
| 286 | // (java) stack space left (should assert constructor is empty) |
| 287 | Handle exception; |
| 288 | oop exception_oop = klass->allocate_instance(CHECK_(exception)); |
| 289 | exception = Handle(THREAD, exception_oop); |
| 290 | if (StackTraceInThrowable) { |
| 291 | java_lang_Throwable::fill_in_stack_trace(exception); |
| 292 | } |
| 293 | return exception; |
| 294 | } |
| 295 | |
| 296 | // Special handling for stack overflow: since we don't have any (java) stack |
| 297 | // space left we use the pre-allocated & pre-initialized StackOverflowError |
| 298 | // klass to create an stack overflow error instance. We do not call its |
| 299 | // constructor for the same reason (it is empty, anyway). |
| 300 | IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) |
| 301 | Handle exception = get_preinitialized_exception( |
| 302 | SystemDictionary::StackOverflowError_klass(), |
| 303 | CHECK); |
| 304 | THROW_HANDLE(exception); |
| 305 | IRT_END |
| 306 | |
| 307 | |
| 308 | IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) |
| 309 | // lookup exception klass |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 310 | TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 311 | if (ProfileTraps) { |
| 312 | if (s == vmSymbols::java_lang_ArithmeticException()) { |
| 313 | note_trap(thread, Deoptimization::Reason_div0_check, CHECK); |
| 314 | } else if (s == vmSymbols::java_lang_NullPointerException()) { |
| 315 | note_trap(thread, Deoptimization::Reason_null_check, CHECK); |
| 316 | } |
| 317 | } |
| 318 | // create exception |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 319 | Handle exception = Exceptions::new_exception(thread, s, message); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 320 | thread->set_vm_result(exception()); |
| 321 | IRT_END |
| 322 | |
| 323 | |
| 324 | IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) |
| 325 | ResourceMark rm(thread); |
| 326 | const char* klass_name = Klass::cast(obj->klass())->external_name(); |
| 327 | // lookup exception klass |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 328 | TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 329 | if (ProfileTraps) { |
| 330 | note_trap(thread, Deoptimization::Reason_class_check, CHECK); |
| 331 | } |
| 332 | // create exception, with klass name as detail message |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 333 | Handle exception = Exceptions::new_exception(thread, s, klass_name); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 334 | thread->set_vm_result(exception()); |
| 335 | IRT_END |
| 336 | |
| 337 | |
| 338 | IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) |
| 339 | char message[jintAsStringSize]; |
| 340 | // lookup exception klass |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 341 | TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 342 | if (ProfileTraps) { |
| 343 | note_trap(thread, Deoptimization::Reason_range_check, CHECK); |
| 344 | } |
| 345 | // create exception |
| 346 | sprintf(message, "%d", index); |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 347 | THROW_MSG(s, message); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 348 | IRT_END |
| 349 | |
| 350 | IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( |
| 351 | JavaThread* thread, oopDesc* obj)) |
| 352 | |
| 353 | ResourceMark rm(thread); |
| 354 | char* message = SharedRuntime::generate_class_cast_message( |
| 355 | thread, Klass::cast(obj->klass())->external_name()); |
| 356 | |
| 357 | if (ProfileTraps) { |
| 358 | note_trap(thread, Deoptimization::Reason_class_check, CHECK); |
| 359 | } |
| 360 | |
| 361 | // create exception |
| 362 | THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); |
| 363 | IRT_END |
| 364 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 365 | // exception_handler_for_exception(...) returns the continuation address, |
| 366 | // the exception oop (via TLS) and sets the bci/bcp for the continuation. |
| 367 | // The exception oop is returned to make sure it is preserved over GC (it |
| 368 | // is only on the stack if the exception was thrown explicitly via athrow). |
| 369 | // During this operation, the expression stack contains the values for the |
| 370 | // bci where the exception happened. If the exception was propagated back |
| 371 | // from a call, the expression stack contains the values for the bci at the |
| 372 | // invoke w/o arguments (i.e., as if one were inside the call). |
| 373 | IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) |
| 374 | |
| 375 | Handle h_exception(thread, exception); |
| 376 | methodHandle h_method (thread, method(thread)); |
| 377 | constantPoolHandle h_constants(thread, h_method->constants()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 378 | bool should_repeat; |
| 379 | int handler_bci; |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 380 | int current_bci = bci(thread); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 381 | |
| 382 | // Need to do this check first since when _do_not_unlock_if_synchronized |
| 383 | // is set, we don't want to trigger any classloading which may make calls |
| 384 | // into java, or surprisingly find a matching exception handler for bci 0 |
| 385 | // since at this moment the method hasn't been "officially" entered yet. |
| 386 | if (thread->do_not_unlock_if_synchronized()) { |
| 387 | ResourceMark rm; |
| 388 | assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); |
| 389 | thread->set_vm_result(exception); |
| 390 | #ifdef CC_INTERP |
| 391 | return (address) -1; |
| 392 | #else |
| 393 | return Interpreter::remove_activation_entry(); |
| 394 | #endif |
| 395 | } |
| 396 | |
| 397 | do { |
| 398 | should_repeat = false; |
| 399 | |
| 400 | // assertions |
| 401 | #ifdef ASSERT |
| 402 | assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); |
| 403 | assert(h_exception->is_oop(), "just checking"); |
| 404 | // Check that exception is a subclass of Throwable, otherwise we have a VerifyError |
Tom Rodriguez | 98449cf | 2010-01-06 14:22:39 -0800 | [diff] [blame] | 405 | if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 406 | if (ExitVMOnVerifyError) vm_exit(-1); |
| 407 | ShouldNotReachHere(); |
| 408 | } |
| 409 | #endif |
| 410 | |
| 411 | // tracing |
| 412 | if (TraceExceptions) { |
| 413 | ttyLocker ttyl; |
| 414 | ResourceMark rm(thread); |
| 415 | tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception()); |
| 416 | tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string()); |
| 417 | tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread); |
| 418 | } |
| 419 | // Don't go paging in something which won't be used. |
| 420 | // else if (h_extable->length() == 0) { |
| 421 | // // disabled for now - interpreter is not using shortcut yet |
| 422 | // // (shortcut is not to call runtime if we have no exception handlers) |
| 423 | // // warning("performance bug: should not call runtime if method has no exception handlers"); |
| 424 | // } |
| 425 | // for AbortVMOnException flag |
| 426 | NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); |
| 427 | |
| 428 | // exception handler lookup |
| 429 | KlassHandle h_klass(THREAD, h_exception->klass()); |
| 430 | handler_bci = h_method->fast_exception_handler_bci_for(h_klass, current_bci, THREAD); |
| 431 | if (HAS_PENDING_EXCEPTION) { |
| 432 | // We threw an exception while trying to find the exception handler. |
| 433 | // Transfer the new exception to the exception handle which will |
| 434 | // be set into thread local storage, and do another lookup for an |
| 435 | // exception handler for this exception, this time starting at the |
| 436 | // BCI of the exception handler which caused the exception to be |
| 437 | // thrown (bug 4307310). |
| 438 | h_exception = Handle(THREAD, PENDING_EXCEPTION); |
| 439 | CLEAR_PENDING_EXCEPTION; |
| 440 | if (handler_bci >= 0) { |
| 441 | current_bci = handler_bci; |
| 442 | should_repeat = true; |
| 443 | } |
| 444 | } |
| 445 | } while (should_repeat == true); |
| 446 | |
| 447 | // notify JVMTI of an exception throw; JVMTI will detect if this is a first |
| 448 | // time throw or a stack unwinding throw and accordingly notify the debugger |
Tom Deneau | f23b68b | 2010-02-01 17:35:05 -0700 | [diff] [blame] | 449 | if (JvmtiExport::can_post_on_exceptions()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 450 | JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
| 451 | } |
| 452 | |
| 453 | #ifdef CC_INTERP |
| 454 | address continuation = (address)(intptr_t) handler_bci; |
| 455 | #else |
| 456 | address continuation = NULL; |
| 457 | #endif |
| 458 | address handler_pc = NULL; |
| 459 | if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { |
| 460 | // Forward exception to callee (leaving bci/bcp untouched) because (a) no |
| 461 | // handler in this method, or (b) after a stack overflow there is not yet |
| 462 | // enough stack space available to reprotect the stack. |
| 463 | #ifndef CC_INTERP |
| 464 | continuation = Interpreter::remove_activation_entry(); |
| 465 | #endif |
| 466 | // Count this for compilation purposes |
| 467 | h_method->interpreter_throwout_increment(); |
| 468 | } else { |
| 469 | // handler in this method => change bci/bcp to handler bci/bcp and continue there |
| 470 | handler_pc = h_method->code_base() + handler_bci; |
| 471 | #ifndef CC_INTERP |
| 472 | set_bcp_and_mdp(handler_pc, thread); |
| 473 | continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; |
| 474 | #endif |
| 475 | } |
| 476 | // notify debugger of an exception catch |
| 477 | // (this is good for exceptions caught in native methods as well) |
Tom Deneau | f23b68b | 2010-02-01 17:35:05 -0700 | [diff] [blame] | 478 | if (JvmtiExport::can_post_on_exceptions()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 479 | JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
| 480 | } |
| 481 | |
| 482 | thread->set_vm_result(h_exception()); |
| 483 | return continuation; |
| 484 | IRT_END |
| 485 | |
| 486 | |
| 487 | IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) |
| 488 | assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); |
| 489 | // nothing to do - eventually we should remove this code entirely (see comments @ call sites) |
| 490 | IRT_END |
| 491 | |
| 492 | |
| 493 | IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) |
| 494 | THROW(vmSymbols::java_lang_AbstractMethodError()); |
| 495 | IRT_END |
| 496 | |
| 497 | |
| 498 | IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
| 499 | THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); |
| 500 | IRT_END |
| 501 | |
| 502 | |
| 503 | //------------------------------------------------------------------------------------------------------------------------ |
| 504 | // Fields |
| 505 | // |
| 506 | |
| 507 | IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode)) |
| 508 | // resolve field |
| 509 | FieldAccessInfo info; |
| 510 | constantPoolHandle pool(thread, method(thread)->constants()); |
Christian Thalinger | 134c40b | 2011-08-16 04:14:05 -0700 | [diff] [blame] | 511 | bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 512 | bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
| 513 | |
| 514 | { |
| 515 | JvmtiHideSingleStepping jhss(thread); |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 516 | LinkResolver::resolve_field(info, pool, get_index_u2_cpcache(thread, bytecode), |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 517 | bytecode, false, CHECK); |
| 518 | } // end JvmtiHideSingleStepping |
| 519 | |
| 520 | // check if link resolution caused cpCache to be updated |
| 521 | if (already_resolved(thread)) return; |
| 522 | |
| 523 | // compute auxiliary field attributes |
| 524 | TosState state = as_TosState(info.field_type()); |
| 525 | |
| 526 | // We need to delay resolving put instructions on final fields |
| 527 | // until we actually invoke one. This is required so we throw |
| 528 | // exceptions at the correct place. If we do not resolve completely |
| 529 | // in the current pass, leaving the put_code set to zero will |
| 530 | // cause the next put instruction to reresolve. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 531 | Bytecodes::Code put_code = (Bytecodes::Code)0; |
| 532 | |
| 533 | // We also need to delay resolving getstatic instructions until the |
| 534 | // class is intitialized. This is required so that access to the static |
| 535 | // field will call the initialization function every time until the class |
| 536 | // is completely initialized ala. in 2.17.5 in JVM Specification. |
| 537 | instanceKlass *klass = instanceKlass::cast(info.klass()->as_klassOop()); |
| 538 | bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) && |
| 539 | !klass->is_initialized()); |
| 540 | Bytecodes::Code get_code = (Bytecodes::Code)0; |
| 541 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 542 | if (!uninitialized_static) { |
| 543 | get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); |
| 544 | if (is_put || !info.access_flags().is_final()) { |
| 545 | put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | cache_entry(thread)->set_field( |
| 550 | get_code, |
| 551 | put_code, |
| 552 | info.klass(), |
| 553 | info.field_index(), |
| 554 | info.field_offset(), |
| 555 | state, |
| 556 | info.access_flags().is_final(), |
| 557 | info.access_flags().is_volatile() |
| 558 | ); |
| 559 | IRT_END |
| 560 | |
| 561 | |
| 562 | //------------------------------------------------------------------------------------------------------------------------ |
| 563 | // Synchronization |
| 564 | // |
| 565 | // The interpreter's synchronization code is factored out so that it can |
| 566 | // be shared by method invocation and synchronized blocks. |
| 567 | //%note synchronization_3 |
| 568 | |
| 569 | static void trace_locking(Handle& h_locking_obj, bool is_locking) { |
| 570 | ObjectSynchronizer::trace_locking(h_locking_obj, false, true, is_locking); |
| 571 | } |
| 572 | |
| 573 | |
| 574 | //%note monitor_1 |
| 575 | IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) |
| 576 | #ifdef ASSERT |
| 577 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 578 | #endif |
| 579 | if (PrintBiasedLockingStatistics) { |
| 580 | Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); |
| 581 | } |
| 582 | Handle h_obj(thread, elem->obj()); |
| 583 | assert(Universe::heap()->is_in_reserved_or_null(h_obj()), |
| 584 | "must be NULL or an object"); |
| 585 | if (UseBiasedLocking) { |
| 586 | // Retry fast entry if bias is revoked to avoid unnecessary inflation |
| 587 | ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); |
| 588 | } else { |
| 589 | ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); |
| 590 | } |
| 591 | assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), |
| 592 | "must be NULL or an object"); |
| 593 | #ifdef ASSERT |
| 594 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 595 | #endif |
| 596 | IRT_END |
| 597 | |
| 598 | |
| 599 | //%note monitor_1 |
| 600 | IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) |
| 601 | #ifdef ASSERT |
| 602 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 603 | #endif |
| 604 | Handle h_obj(thread, elem->obj()); |
| 605 | assert(Universe::heap()->is_in_reserved_or_null(h_obj()), |
| 606 | "must be NULL or an object"); |
| 607 | if (elem == NULL || h_obj()->is_unlocked()) { |
| 608 | THROW(vmSymbols::java_lang_IllegalMonitorStateException()); |
| 609 | } |
| 610 | ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); |
| 611 | // Free entry. This must be done here, since a pending exception might be installed on |
| 612 | // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. |
| 613 | elem->set_obj(NULL); |
| 614 | #ifdef ASSERT |
| 615 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 616 | #endif |
| 617 | IRT_END |
| 618 | |
| 619 | |
| 620 | IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) |
| 621 | THROW(vmSymbols::java_lang_IllegalMonitorStateException()); |
| 622 | IRT_END |
| 623 | |
| 624 | |
| 625 | IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) |
| 626 | // Returns an illegal exception to install into the current thread. The |
| 627 | // pending_exception flag is cleared so normal exception handling does not |
| 628 | // trigger. Any current installed exception will be overwritten. This |
| 629 | // method will be called during an exception unwind. |
| 630 | |
| 631 | assert(!HAS_PENDING_EXCEPTION, "no pending exception"); |
| 632 | Handle exception(thread, thread->vm_result()); |
| 633 | assert(exception() != NULL, "vm result should be set"); |
| 634 | thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) |
Tom Rodriguez | 98449cf | 2010-01-06 14:22:39 -0800 | [diff] [blame] | 635 | if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 636 | exception = get_preinitialized_exception( |
| 637 | SystemDictionary::IllegalMonitorStateException_klass(), |
| 638 | CATCH); |
| 639 | } |
| 640 | thread->set_vm_result(exception()); |
| 641 | IRT_END |
| 642 | |
| 643 | |
| 644 | //------------------------------------------------------------------------------------------------------------------------ |
| 645 | // Invokes |
| 646 | |
| 647 | IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp)) |
| 648 | return method->orig_bytecode_at(method->bci_from(bcp)); |
| 649 | IRT_END |
| 650 | |
| 651 | IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code)) |
| 652 | method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
| 653 | IRT_END |
| 654 | |
| 655 | IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, methodOopDesc* method, address bcp)) |
| 656 | JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
| 657 | IRT_END |
| 658 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 659 | IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 660 | // extract receiver from the outgoing argument list if necessary |
| 661 | Handle receiver(thread, NULL); |
| 662 | if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) { |
| 663 | ResourceMark rm(thread); |
| 664 | methodHandle m (thread, method(thread)); |
Tom Rodriguez | 423f587 | 2011-01-13 22:15:41 -0800 | [diff] [blame] | 665 | Bytecode_invoke call(m, bci(thread)); |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 666 | Symbol* signature = call.signature(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 667 | receiver = Handle(thread, |
| 668 | thread->last_frame().interpreter_callee_receiver(signature)); |
| 669 | assert(Universe::heap()->is_in_reserved_or_null(receiver()), |
| 670 | "sanity check"); |
| 671 | assert(receiver.is_null() || |
| 672 | Universe::heap()->is_in_reserved(receiver->klass()), |
| 673 | "sanity check"); |
| 674 | } |
| 675 | |
| 676 | // resolve method |
| 677 | CallInfo info; |
| 678 | constantPoolHandle pool(thread, method(thread)->constants()); |
| 679 | |
| 680 | { |
| 681 | JvmtiHideSingleStepping jhss(thread); |
| 682 | LinkResolver::resolve_invoke(info, receiver, pool, |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 683 | get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 684 | if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
| 685 | int retry_count = 0; |
| 686 | while (info.resolved_method()->is_old()) { |
| 687 | // It is very unlikely that method is redefined more than 100 times |
| 688 | // in the middle of resolve. If it is looping here more than 100 times |
| 689 | // means then there could be a bug here. |
| 690 | guarantee((retry_count++ < 100), |
| 691 | "Could not resolve to latest version of redefined method"); |
| 692 | // method is redefined in the middle of resolve so re-try. |
| 693 | LinkResolver::resolve_invoke(info, receiver, pool, |
John R Rose | 581521b | 2010-05-23 01:38:26 -0700 | [diff] [blame] | 694 | get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 695 | } |
| 696 | } |
| 697 | } // end JvmtiHideSingleStepping |
| 698 | |
| 699 | // check if link resolution caused cpCache to be updated |
| 700 | if (already_resolved(thread)) return; |
| 701 | |
| 702 | if (bytecode == Bytecodes::_invokeinterface) { |
| 703 | |
| 704 | if (TraceItables && Verbose) { |
| 705 | ResourceMark rm(thread); |
| 706 | tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string()); |
| 707 | } |
| 708 | if (info.resolved_method()->method_holder() == |
Tom Rodriguez | 98449cf | 2010-01-06 14:22:39 -0800 | [diff] [blame] | 709 | SystemDictionary::Object_klass()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 710 | // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
| 711 | // (see also cpCacheOop.cpp for details) |
| 712 | methodHandle rm = info.resolved_method(); |
| 713 | assert(rm->is_final() || info.has_vtable_index(), |
| 714 | "should have been set already"); |
| 715 | cache_entry(thread)->set_method(bytecode, rm, info.vtable_index()); |
| 716 | } else { |
| 717 | // Setup itable entry |
| 718 | int index = klassItable::compute_itable_index(info.resolved_method()()); |
| 719 | cache_entry(thread)->set_interface_call(info.resolved_method(), index); |
| 720 | } |
| 721 | } else { |
| 722 | cache_entry(thread)->set_method( |
| 723 | bytecode, |
| 724 | info.resolved_method(), |
| 725 | info.vtable_index()); |
| 726 | } |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 727 | } |
| 728 | IRT_END |
| 729 | |
| 730 | |
| 731 | // First time execution: Resolve symbols, create a permanent MethodType object. |
| 732 | IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) { |
| 733 | assert(EnableInvokeDynamic, ""); |
| 734 | const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
| 735 | |
| 736 | // resolve method |
| 737 | CallInfo info; |
| 738 | constantPoolHandle pool(thread, method(thread)->constants()); |
| 739 | |
| 740 | { |
| 741 | JvmtiHideSingleStepping jhss(thread); |
| 742 | LinkResolver::resolve_invoke(info, Handle(), pool, |
| 743 | get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 744 | } // end JvmtiHideSingleStepping |
| 745 | |
| 746 | cache_entry(thread)->set_method_handle( |
| 747 | info.resolved_method(), |
| 748 | info.resolved_appendix()); |
| 749 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 750 | IRT_END |
| 751 | |
| 752 | |
John R Rose | 903247c | 2009-10-30 16:22:59 -0700 | [diff] [blame] | 753 | // First time execution: Resolve symbols, create a permanent CallSite object. |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 754 | IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) { |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 755 | assert(EnableInvokeDynamic, ""); |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 756 | const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
| 757 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 758 | //TO DO: consider passing BCI to Java. |
| 759 | // int caller_bci = method(thread)->bci_from(bcp(thread)); |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 760 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 761 | // resolve method |
| 762 | CallInfo info; |
| 763 | constantPoolHandle pool(thread, method(thread)->constants()); |
| 764 | int index = get_index_u4(thread, bytecode); |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 765 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 766 | { |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 767 | JvmtiHideSingleStepping jhss(thread); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 768 | LinkResolver::resolve_invoke(info, Handle(), pool, |
| 769 | index, bytecode, CHECK); |
| 770 | } // end JvmtiHideSingleStepping |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 771 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 772 | pool->cache()->secondary_entry_at(index)->set_dynamic_call( |
| 773 | info.resolved_method(), |
| 774 | info.resolved_appendix()); |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 775 | } |
| 776 | IRT_END |
| 777 | |
| 778 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 779 | //------------------------------------------------------------------------------------------------------------------------ |
| 780 | // Miscellaneous |
| 781 | |
| 782 | |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 783 | nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { |
| 784 | nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); |
| 785 | assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); |
| 786 | if (branch_bcp != NULL && nm != NULL) { |
| 787 | // This was a successful request for an OSR nmethod. Because |
| 788 | // frequency_counter_overflow_inner ends with a safepoint check, |
| 789 | // nm could have been unloaded so look it up again. It's unsafe |
| 790 | // to examine nm directly since it might have been freed and used |
| 791 | // for something else. |
| 792 | frame fr = thread->last_frame(); |
| 793 | methodOop method = fr.interpreter_frame_method(); |
| 794 | int bci = method->bci_from(fr.interpreter_frame_bcp()); |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 795 | nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 796 | } |
Christian Thalinger | 301e9f9 | 2012-06-13 11:36:03 -0700 | [diff] [blame] | 797 | #ifndef PRODUCT |
| 798 | if (TraceOnStackReplacement) { |
| 799 | if (nm != NULL) { |
| 800 | tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry()); |
| 801 | nm->print(); |
| 802 | } |
| 803 | } |
| 804 | #endif |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 805 | return nm; |
| 806 | } |
| 807 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 808 | IRT_ENTRY(nmethod*, |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 809 | InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 810 | // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 811 | // flag, in case this method triggers classloading which will call into Java. |
| 812 | UnlockFlagSaver fs(thread); |
| 813 | |
| 814 | frame fr = thread->last_frame(); |
| 815 | assert(fr.is_interpreted_frame(), "must come from interpreter"); |
| 816 | methodHandle method(thread, fr.interpreter_frame_method()); |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 817 | const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; |
| 818 | const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 819 | |
Igor Veresov | 84dda87 | 2012-01-26 12:15:24 -0800 | [diff] [blame] | 820 | assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
Igor Veresov | 47caaa4 | 2011-07-01 10:37:37 -0700 | [diff] [blame] | 821 | nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
Igor Veresov | 84dda87 | 2012-01-26 12:15:24 -0800 | [diff] [blame] | 822 | assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 823 | |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 824 | if (osr_nm != NULL) { |
| 825 | // We may need to do on-stack replacement which requires that no |
| 826 | // monitors in the activation are biased because their |
| 827 | // BasicObjectLocks will need to migrate during OSR. Force |
| 828 | // unbiasing of all monitors in the activation now (even though |
| 829 | // the OSR nmethod might be invalidated) because we don't have a |
| 830 | // safepoint opportunity later once the migration begins. |
| 831 | if (UseBiasedLocking) { |
| 832 | ResourceMark rm; |
| 833 | GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); |
| 834 | for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); |
| 835 | kptr < fr.interpreter_frame_monitor_begin(); |
| 836 | kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { |
| 837 | if( kptr->obj() != NULL ) { |
| 838 | objects_to_revoke->append(Handle(THREAD, kptr->obj())); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 839 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 840 | } |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 841 | BiasedLocking::revoke(objects_to_revoke); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 842 | } |
| 843 | } |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 844 | return osr_nm; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 845 | IRT_END |
| 846 | |
| 847 | IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(methodOopDesc* method, address cur_bcp)) |
| 848 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 849 | int bci = method->bci_from(cur_bcp); |
| 850 | methodDataOop mdo = method->method_data(); |
| 851 | if (mdo == NULL) return 0; |
| 852 | return mdo->bci_to_di(bci); |
| 853 | IRT_END |
| 854 | |
Igor Veresov | 6a80d21 | 2011-01-10 18:46:29 -0800 | [diff] [blame] | 855 | IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 856 | // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 857 | // flag, in case this method triggers classloading which will call into Java. |
| 858 | UnlockFlagSaver fs(thread); |
| 859 | |
| 860 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 861 | frame fr = thread->last_frame(); |
| 862 | assert(fr.is_interpreted_frame(), "must come from interpreter"); |
| 863 | methodHandle method(thread, fr.interpreter_frame_method()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 864 | methodOopDesc::build_interpreter_method_data(method, THREAD); |
| 865 | if (HAS_PENDING_EXCEPTION) { |
| 866 | assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); |
| 867 | CLEAR_PENDING_EXCEPTION; |
| 868 | // and fall through... |
| 869 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 870 | IRT_END |
| 871 | |
| 872 | |
| 873 | #ifdef ASSERT |
| 874 | IRT_LEAF(void, InterpreterRuntime::verify_mdp(methodOopDesc* method, address bcp, address mdp)) |
| 875 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 876 | |
| 877 | methodDataOop mdo = method->method_data(); |
| 878 | assert(mdo != NULL, "must not be null"); |
| 879 | |
| 880 | int bci = method->bci_from(bcp); |
| 881 | |
| 882 | address mdp2 = mdo->bci_to_dp(bci); |
| 883 | if (mdp != mdp2) { |
| 884 | ResourceMark rm; |
| 885 | ResetNoHandleMark rnm; // In a LEAF entry. |
| 886 | HandleMark hm; |
| 887 | tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); |
| 888 | int current_di = mdo->dp_to_di(mdp); |
| 889 | int expected_di = mdo->dp_to_di(mdp2); |
| 890 | tty->print_cr(" actual di %d expected di %d", current_di, expected_di); |
| 891 | int expected_approx_bci = mdo->data_at(expected_di)->bci(); |
| 892 | int approx_bci = -1; |
| 893 | if (current_di >= 0) { |
| 894 | approx_bci = mdo->data_at(current_di)->bci(); |
| 895 | } |
| 896 | tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); |
| 897 | mdo->print_on(tty); |
| 898 | method->print_codes(); |
| 899 | } |
| 900 | assert(mdp == mdp2, "wrong mdp"); |
| 901 | IRT_END |
| 902 | #endif // ASSERT |
| 903 | |
| 904 | IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) |
| 905 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 906 | ResourceMark rm(thread); |
| 907 | HandleMark hm(thread); |
| 908 | frame fr = thread->last_frame(); |
| 909 | assert(fr.is_interpreted_frame(), "must come from interpreter"); |
| 910 | methodDataHandle h_mdo(thread, fr.interpreter_frame_method()->method_data()); |
| 911 | |
| 912 | // Grab a lock to ensure atomic access to setting the return bci and |
| 913 | // the displacement. This can block and GC, invalidating all naked oops. |
| 914 | MutexLocker ml(RetData_lock); |
| 915 | |
| 916 | // ProfileData is essentially a wrapper around a derived oop, so we |
| 917 | // need to take the lock before making any ProfileData structures. |
| 918 | ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); |
| 919 | RetData* rdata = data->as_RetData(); |
| 920 | address new_mdp = rdata->fixup_ret(return_bci, h_mdo); |
| 921 | fr.interpreter_frame_set_mdp(new_mdp); |
| 922 | IRT_END |
| 923 | |
| 924 | |
| 925 | IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) |
| 926 | // We used to need an explict preserve_arguments here for invoke bytecodes. However, |
| 927 | // stack traversal automatically takes care of preserving arguments for invoke, so |
| 928 | // this is no longer needed. |
| 929 | |
| 930 | // IRT_END does an implicit safepoint check, hence we are guaranteed to block |
| 931 | // if this is called during a safepoint |
| 932 | |
| 933 | if (JvmtiExport::should_post_single_step()) { |
| 934 | // We are called during regular safepoints and when the VM is |
| 935 | // single stepping. If any thread is marked for single stepping, |
| 936 | // then we may have JVMTI work to do. |
| 937 | JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); |
| 938 | } |
| 939 | IRT_END |
| 940 | |
| 941 | IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, |
| 942 | ConstantPoolCacheEntry *cp_entry)) |
| 943 | |
| 944 | // check the access_flags for the field in the klass |
Tom Rodriguez | 6e8a263 | 2011-03-18 16:00:34 -0700 | [diff] [blame] | 945 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 946 | instanceKlass* ik = instanceKlass::cast(java_lang_Class::as_klassOop(cp_entry->f1_as_klass_mirror())); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 947 | int index = cp_entry->field_index(); |
Tom Rodriguez | e39ba1a | 2011-09-10 17:29:02 -0700 | [diff] [blame] | 948 | if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 949 | |
| 950 | switch(cp_entry->flag_state()) { |
| 951 | case btos: // fall through |
| 952 | case ctos: // fall through |
| 953 | case stos: // fall through |
| 954 | case itos: // fall through |
| 955 | case ftos: // fall through |
| 956 | case ltos: // fall through |
| 957 | case dtos: // fall through |
| 958 | case atos: break; |
| 959 | default: ShouldNotReachHere(); return; |
| 960 | } |
| 961 | bool is_static = (obj == NULL); |
| 962 | HandleMark hm(thread); |
| 963 | |
| 964 | Handle h_obj; |
| 965 | if (!is_static) { |
| 966 | // non-static field accessors have an object, but we need a handle |
| 967 | h_obj = Handle(thread, obj); |
| 968 | } |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 969 | instanceKlassHandle h_cp_entry_f1(thread, java_lang_Class::as_klassOop(cp_entry->f1_as_klass_mirror())); |
| 970 | jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 971 | JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid); |
| 972 | IRT_END |
| 973 | |
| 974 | IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, |
| 975 | oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) |
| 976 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 977 | klassOop k = java_lang_Class::as_klassOop(cp_entry->f1_as_klass_mirror()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 978 | |
| 979 | // check the access_flags for the field in the klass |
| 980 | instanceKlass* ik = instanceKlass::cast(k); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 981 | int index = cp_entry->field_index(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 982 | // bail out if field modifications are not watched |
Tom Rodriguez | e39ba1a | 2011-09-10 17:29:02 -0700 | [diff] [blame] | 983 | if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 984 | |
| 985 | char sig_type = '\0'; |
| 986 | |
| 987 | switch(cp_entry->flag_state()) { |
| 988 | case btos: sig_type = 'Z'; break; |
| 989 | case ctos: sig_type = 'C'; break; |
| 990 | case stos: sig_type = 'S'; break; |
| 991 | case itos: sig_type = 'I'; break; |
| 992 | case ftos: sig_type = 'F'; break; |
| 993 | case atos: sig_type = 'L'; break; |
| 994 | case ltos: sig_type = 'J'; break; |
| 995 | case dtos: sig_type = 'D'; break; |
| 996 | default: ShouldNotReachHere(); return; |
| 997 | } |
| 998 | bool is_static = (obj == NULL); |
| 999 | |
| 1000 | HandleMark hm(thread); |
| 1001 | instanceKlassHandle h_klass(thread, k); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame^] | 1002 | jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1003 | jvalue fvalue; |
| 1004 | #ifdef _LP64 |
| 1005 | fvalue = *value; |
| 1006 | #else |
| 1007 | // Long/double values are stored unaligned and also noncontiguously with |
| 1008 | // tagged stacks. We can't just do a simple assignment even in the non- |
| 1009 | // J/D cases because a C++ compiler is allowed to assume that a jvalue is |
| 1010 | // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. |
| 1011 | // We assume that the two halves of longs/doubles are stored in interpreter |
| 1012 | // stack slots in platform-endian order. |
| 1013 | jlong_accessor u; |
| 1014 | jint* newval = (jint*)value; |
| 1015 | u.words[0] = newval[0]; |
Christian Thalinger | 0211f97 | 2010-04-30 08:37:24 -0700 | [diff] [blame] | 1016 | u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1017 | fvalue.j = u.long_value; |
| 1018 | #endif // _LP64 |
| 1019 | |
| 1020 | Handle h_obj; |
| 1021 | if (!is_static) { |
| 1022 | // non-static field accessors have an object, but we need a handle |
| 1023 | h_obj = Handle(thread, obj); |
| 1024 | } |
| 1025 | |
| 1026 | JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj, |
| 1027 | fid, sig_type, &fvalue); |
| 1028 | IRT_END |
| 1029 | |
| 1030 | IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) |
| 1031 | JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); |
| 1032 | IRT_END |
| 1033 | |
| 1034 | |
| 1035 | IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) |
| 1036 | JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); |
| 1037 | IRT_END |
| 1038 | |
| 1039 | IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) |
| 1040 | { |
| 1041 | return (Interpreter::contains(pc) ? 1 : 0); |
| 1042 | } |
| 1043 | IRT_END |
| 1044 | |
| 1045 | |
| 1046 | // Implementation of SignatureHandlerLibrary |
| 1047 | |
| 1048 | address SignatureHandlerLibrary::set_handler_blob() { |
| 1049 | BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); |
| 1050 | if (handler_blob == NULL) { |
| 1051 | return NULL; |
| 1052 | } |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1053 | address handler = handler_blob->code_begin(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1054 | _handler_blob = handler_blob; |
| 1055 | _handler = handler; |
| 1056 | return handler; |
| 1057 | } |
| 1058 | |
| 1059 | void SignatureHandlerLibrary::initialize() { |
| 1060 | if (_fingerprints != NULL) { |
| 1061 | return; |
| 1062 | } |
| 1063 | if (set_handler_blob() == NULL) { |
| 1064 | vm_exit_out_of_memory(blob_size, "native signature handlers"); |
| 1065 | } |
| 1066 | |
| 1067 | BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", |
| 1068 | SignatureHandlerLibrary::buffer_size); |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1069 | _buffer = bb->code_begin(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1070 | |
Zhengyu Gu | a39b176 | 2012-06-28 17:03:16 -0400 | [diff] [blame] | 1071 | _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
| 1072 | _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1073 | } |
| 1074 | |
| 1075 | address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { |
| 1076 | address handler = _handler; |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1077 | int insts_size = buffer->pure_insts_size(); |
| 1078 | if (handler + insts_size > _handler_blob->code_end()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1079 | // get a new handler blob |
| 1080 | handler = set_handler_blob(); |
| 1081 | } |
| 1082 | if (handler != NULL) { |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1083 | memcpy(handler, buffer->insts_begin(), insts_size); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1084 | pd_set_handler(handler); |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1085 | ICache::invalidate_range(handler, insts_size); |
| 1086 | _handler = handler + insts_size; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1087 | } |
| 1088 | return handler; |
| 1089 | } |
| 1090 | |
| 1091 | void SignatureHandlerLibrary::add(methodHandle method) { |
| 1092 | if (method->signature_handler() == NULL) { |
| 1093 | // use slow signature handler if we can't do better |
| 1094 | int handler_index = -1; |
| 1095 | // check if we can use customized (fast) signature handler |
| 1096 | if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { |
| 1097 | // use customized signature handler |
| 1098 | MutexLocker mu(SignatureHandlerLibrary_lock); |
| 1099 | // make sure data structure is initialized |
| 1100 | initialize(); |
| 1101 | // lookup method signature's fingerprint |
| 1102 | uint64_t fingerprint = Fingerprinter(method).fingerprint(); |
| 1103 | handler_index = _fingerprints->find(fingerprint); |
| 1104 | // create handler if necessary |
| 1105 | if (handler_index < 0) { |
| 1106 | ResourceMark rm; |
| 1107 | ptrdiff_t align_offset = (address) |
| 1108 | round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer; |
| 1109 | CodeBuffer buffer((address)(_buffer + align_offset), |
| 1110 | SignatureHandlerLibrary::buffer_size - align_offset); |
| 1111 | InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); |
| 1112 | // copy into code heap |
| 1113 | address handler = set_handler(&buffer); |
| 1114 | if (handler == NULL) { |
| 1115 | // use slow signature handler |
| 1116 | } else { |
| 1117 | // debugging suppport |
| 1118 | if (PrintSignatureHandlers) { |
| 1119 | tty->cr(); |
| 1120 | tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", |
| 1121 | _handlers->length(), |
| 1122 | (method->is_static() ? "static" : "receiver"), |
| 1123 | method->name_and_sig_as_C_string(), |
| 1124 | fingerprint, |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1125 | buffer.insts_size()); |
| 1126 | Disassembler::decode(handler, handler + buffer.insts_size()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1127 | #ifndef PRODUCT |
| 1128 | tty->print_cr(" --- associated result handler ---"); |
| 1129 | address rh_begin = Interpreter::result_handler(method()->result_type()); |
| 1130 | address rh_end = rh_begin; |
| 1131 | while (*(int*)rh_end != 0) { |
| 1132 | rh_end += sizeof(int); |
| 1133 | } |
| 1134 | Disassembler::decode(rh_begin, rh_end); |
| 1135 | #endif |
| 1136 | } |
| 1137 | // add handler to library |
| 1138 | _fingerprints->append(fingerprint); |
| 1139 | _handlers->append(handler); |
| 1140 | // set handler index |
| 1141 | assert(_fingerprints->length() == _handlers->length(), "sanity check"); |
| 1142 | handler_index = _fingerprints->length() - 1; |
| 1143 | } |
| 1144 | } |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1145 | // Set handler under SignatureHandlerLibrary_lock |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1146 | if (handler_index < 0) { |
| 1147 | // use generic signature handler |
| 1148 | method->set_signature_handler(Interpreter::slow_signature_handler()); |
| 1149 | } else { |
| 1150 | // set handler |
| 1151 | method->set_signature_handler(_handlers->at(handler_index)); |
| 1152 | } |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1153 | } else { |
| 1154 | CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| 1155 | // use generic signature handler |
| 1156 | method->set_signature_handler(Interpreter::slow_signature_handler()); |
| 1157 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1158 | } |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1159 | #ifdef ASSERT |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1160 | int handler_index = -1; |
| 1161 | int fingerprint_index = -2; |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1162 | { |
| 1163 | // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
| 1164 | // in any way if accessed from multiple threads. To avoid races with another |
| 1165 | // thread which may change the arrays in the above, mutex protected block, we |
| 1166 | // have to protect this read access here with the same mutex as well! |
| 1167 | MutexLocker mu(SignatureHandlerLibrary_lock); |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1168 | if (_handlers != NULL) { |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1169 | handler_index = _handlers->find(method->signature_handler()); |
| 1170 | fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint()); |
| 1171 | } |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1172 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1173 | assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1174 | handler_index == fingerprint_index, "sanity check"); |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1175 | #endif // ASSERT |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
| 1178 | |
| 1179 | BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; |
| 1180 | address SignatureHandlerLibrary::_handler = NULL; |
| 1181 | GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; |
| 1182 | GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; |
| 1183 | address SignatureHandlerLibrary::_buffer = NULL; |
| 1184 | |
| 1185 | |
| 1186 | IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, methodOopDesc* method)) |
| 1187 | methodHandle m(thread, method); |
| 1188 | assert(m->is_native(), "sanity check"); |
| 1189 | // lookup native function entry point if it doesn't exist |
| 1190 | bool in_base_library; |
| 1191 | if (!m->has_native_function()) { |
| 1192 | NativeLookup::lookup(m, in_base_library, CHECK); |
| 1193 | } |
| 1194 | // make sure signature handler is installed |
| 1195 | SignatureHandlerLibrary::add(m); |
| 1196 | // The interpreter entry point checks the signature handler first, |
| 1197 | // before trying to fetch the native entry point and klass mirror. |
| 1198 | // We must set the signature handler last, so that multiple processors |
| 1199 | // preparing the same method will be sure to see non-null entry & mirror. |
| 1200 | IRT_END |
| 1201 | |
Roland Westrelin | 90844ca | 2011-09-07 14:15:07 +0200 | [diff] [blame] | 1202 | #if defined(IA32) || defined(AMD64) || defined(ARM) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1203 | IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) |
| 1204 | if (src_address == dest_address) { |
| 1205 | return; |
| 1206 | } |
| 1207 | ResetNoHandleMark rnm; // In a LEAF entry. |
| 1208 | HandleMark hm; |
| 1209 | ResourceMark rm; |
| 1210 | frame fr = thread->last_frame(); |
| 1211 | assert(fr.is_interpreted_frame(), ""); |
| 1212 | jint bci = fr.interpreter_frame_bci(); |
| 1213 | methodHandle mh(thread, fr.interpreter_frame_method()); |
Tom Rodriguez | 423f587 | 2011-01-13 22:15:41 -0800 | [diff] [blame] | 1214 | Bytecode_invoke invoke(mh, bci); |
| 1215 | ArgumentSizeComputer asc(invoke.signature()); |
| 1216 | int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver |
Vladimir Kozlov | 9c7b430 | 2010-06-10 13:04:20 -0700 | [diff] [blame] | 1217 | Copy::conjoint_jbytes(src_address, dest_address, |
Christian Thalinger | 0211f97 | 2010-04-30 08:37:24 -0700 | [diff] [blame] | 1218 | size_of_arguments * Interpreter::stackElementSize); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1219 | IRT_END |
| 1220 | #endif |