Mercurial > hg > truffle
annotate src/share/vm/interpreter/interpreterRuntime.cpp @ 9597:d5c2b20e9d73
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 07 May 2013 01:59:12 +0200 |
parents | 89e4d67fdd2a |
children | 836a62f43af9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "compiler/compileBroker.hpp" | |
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29 #include "compiler/disassembler.hpp" |
1972 | 30 #include "gc_interface/collectedHeap.hpp" |
31 #include "interpreter/interpreter.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "interpreter/templateTable.hpp" | |
35 #include "memory/oopFactory.hpp" | |
36 #include "memory/universe.inline.hpp" | |
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37 #include "oops/constantPool.hpp" |
1972 | 38 #include "oops/instanceKlass.hpp" |
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39 #include "oops/methodData.hpp" |
1972 | 40 #include "oops/objArrayKlass.hpp" |
41 #include "oops/oop.inline.hpp" | |
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42 #include "oops/symbol.hpp" |
1972 | 43 #include "prims/jvmtiExport.hpp" |
44 #include "prims/nativeLookup.hpp" | |
45 #include "runtime/biasedLocking.hpp" | |
46 #include "runtime/compilationPolicy.hpp" | |
47 #include "runtime/deoptimization.hpp" | |
48 #include "runtime/fieldDescriptor.hpp" | |
49 #include "runtime/handles.inline.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/jfieldIDWorkaround.hpp" | |
53 #include "runtime/osThread.hpp" | |
54 #include "runtime/sharedRuntime.hpp" | |
55 #include "runtime/stubRoutines.hpp" | |
56 #include "runtime/synchronizer.hpp" | |
57 #include "runtime/threadCritical.hpp" | |
58 #include "utilities/events.hpp" | |
59 #ifdef TARGET_ARCH_x86 | |
60 # include "vm_version_x86.hpp" | |
61 #endif | |
62 #ifdef TARGET_ARCH_sparc | |
63 # include "vm_version_sparc.hpp" | |
64 #endif | |
65 #ifdef TARGET_ARCH_zero | |
66 # include "vm_version_zero.hpp" | |
67 #endif | |
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68 #ifdef TARGET_ARCH_arm |
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69 # include "vm_version_arm.hpp" |
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70 #endif |
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71 #ifdef TARGET_ARCH_ppc |
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72 # include "vm_version_ppc.hpp" |
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73 #endif |
1972 | 74 #ifdef COMPILER2 |
75 #include "opto/runtime.hpp" | |
76 #endif | |
0 | 77 |
78 class UnlockFlagSaver { | |
79 private: | |
80 JavaThread* _thread; | |
81 bool _do_not_unlock; | |
82 public: | |
83 UnlockFlagSaver(JavaThread* t) { | |
84 _thread = t; | |
85 _do_not_unlock = t->do_not_unlock_if_synchronized(); | |
86 t->set_do_not_unlock_if_synchronized(false); | |
87 } | |
88 ~UnlockFlagSaver() { | |
89 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); | |
90 } | |
91 }; | |
92 | |
93 //------------------------------------------------------------------------------------------------------------------------ | |
94 // State accessors | |
95 | |
96 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { | |
97 last_frame(thread).interpreter_frame_set_bcp(bcp); | |
98 if (ProfileInterpreter) { | |
99 // ProfileTraps uses MDOs independently of ProfileInterpreter. | |
100 // That is why we must check both ProfileInterpreter and mdo != NULL. | |
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101 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
0 | 102 if (mdo != NULL) { |
103 NEEDS_CLEANUP; | |
104 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); | |
105 } | |
106 } | |
107 } | |
108 | |
109 //------------------------------------------------------------------------------------------------------------------------ | |
110 // Constants | |
111 | |
112 | |
113 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) | |
114 // access constant pool | |
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115 ConstantPool* pool = method(thread)->constants(); |
1565 | 116 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
0 | 117 constantTag tag = pool->tag_at(index); |
118 | |
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119 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); |
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120 Klass* klass = pool->klass_at(index, CHECK); |
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121 oop java_class = klass->java_mirror(); |
0 | 122 thread->set_vm_result(java_class); |
123 IRT_END | |
124 | |
1602 | 125 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
126 assert(bytecode == Bytecodes::_fast_aldc || | |
127 bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); | |
128 ResourceMark rm(thread); | |
129 methodHandle m (thread, method(thread)); | |
2142 | 130 Bytecode_loadconstant ldc(m, bci(thread)); |
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131 oop result = ldc.resolve_constant(CHECK); |
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132 #ifdef ASSERT |
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133 { |
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134 // The bytecode wrappers aren't GC-safe so construct a new one |
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135 Bytecode_loadconstant ldc2(m, bci(thread)); |
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136 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); |
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137 assert(result == coop, "expected result for assembly code"); |
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138 } |
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139 #endif |
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140 thread->set_vm_result(result); |
1602 | 141 } |
142 IRT_END | |
143 | |
0 | 144 |
145 //------------------------------------------------------------------------------------------------------------------------ | |
146 // Allocation | |
147 | |
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148 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) |
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149 Klass* k_oop = pool->klass_at(index, CHECK); |
0 | 150 instanceKlassHandle klass (THREAD, k_oop); |
151 | |
152 // Make sure we are not instantiating an abstract klass | |
153 klass->check_valid_for_instantiation(true, CHECK); | |
154 | |
155 // Make sure klass is initialized | |
156 klass->initialize(CHECK); | |
157 | |
158 // At this point the class may not be fully initialized | |
159 // because of recursive initialization. If it is fully | |
160 // initialized & has_finalized is not set, we rewrite | |
161 // it into its fast version (Note: no locking is needed | |
162 // here since this is an atomic byte write and can be | |
163 // done more than once). | |
164 // | |
165 // Note: In case of classes with has_finalized we don't | |
166 // rewrite since that saves us an extra check in | |
167 // the fast version which then would call the | |
168 // slow version anyway (and do a call back into | |
169 // Java). | |
170 // If we have a breakpoint, then we don't rewrite | |
171 // because the _breakpoint bytecode would be lost. | |
172 oop obj = klass->allocate_instance(CHECK); | |
173 thread->set_vm_result(obj); | |
174 IRT_END | |
175 | |
176 | |
177 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) | |
178 oop obj = oopFactory::new_typeArray(type, size, CHECK); | |
179 thread->set_vm_result(obj); | |
180 IRT_END | |
181 | |
182 | |
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183 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) |
0 | 184 // Note: no oopHandle for pool & klass needed since they are not used |
185 // anymore after new_objArray() and no GC can happen before. | |
186 // (This may have to change if this code changes!) | |
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187 Klass* klass = pool->klass_at(index, CHECK); |
0 | 188 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
189 thread->set_vm_result(obj); | |
190 IRT_END | |
191 | |
192 | |
193 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) | |
194 // We may want to pass in more arguments - could make this slightly faster | |
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195 ConstantPool* constants = method(thread)->constants(); |
1565 | 196 int i = get_index_u2(thread, Bytecodes::_multianewarray); |
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197 Klass* klass = constants->klass_at(i, CHECK); |
0 | 198 int nof_dims = number_of_dimensions(thread); |
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199 assert(klass->is_klass(), "not a class"); |
0 | 200 assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
201 | |
202 // We must create an array of jints to pass to multi_allocate. | |
203 ResourceMark rm(thread); | |
204 const int small_dims = 10; | |
205 jint dim_array[small_dims]; | |
206 jint *dims = &dim_array[0]; | |
207 if (nof_dims > small_dims) { | |
208 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); | |
209 } | |
210 for (int index = 0; index < nof_dims; index++) { | |
211 // offset from first_size_address is addressed as local[index] | |
212 int n = Interpreter::local_offset_in_bytes(index)/jintSize; | |
213 dims[index] = first_size_address[n]; | |
214 } | |
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215 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
0 | 216 thread->set_vm_result(obj); |
217 IRT_END | |
218 | |
219 | |
220 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
221 assert(obj->is_oop(), "must be a valid oop"); | |
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222 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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223 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 224 IRT_END |
225 | |
226 | |
227 // Quicken instance-of and check-cast bytecodes | |
228 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) | |
229 // Force resolving; quicken the bytecode | |
1565 | 230 int which = get_index_u2(thread, Bytecodes::_checkcast); |
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231 ConstantPool* cpool = method(thread)->constants(); |
0 | 232 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
233 // program we might have seen an unquick'd bytecode in the interpreter but have another | |
234 // thread quicken the bytecode before we get here. | |
235 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); | |
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236 Klass* klass = cpool->klass_at(which, CHECK); |
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237 thread->set_vm_result_2(klass); |
0 | 238 IRT_END |
239 | |
240 | |
241 //------------------------------------------------------------------------------------------------------------------------ | |
242 // Exceptions | |
243 | |
244 // Assume the compiler is (or will be) interested in this event. | |
245 // If necessary, create an MDO to hold the information, and record it. | |
246 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { | |
247 assert(ProfileTraps, "call me only if profiling"); | |
248 methodHandle trap_method(thread, method(thread)); | |
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249 |
0 | 250 if (trap_method.not_null()) { |
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251 MethodData* trap_mdo = trap_method->method_data(); |
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252 if (trap_mdo == NULL) { |
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253 Method::build_interpreter_method_data(trap_method, THREAD); |
0 | 254 if (HAS_PENDING_EXCEPTION) { |
255 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
256 CLEAR_PENDING_EXCEPTION; | |
257 } | |
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258 trap_mdo = trap_method->method_data(); |
0 | 259 // and fall through... |
260 } | |
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261 if (trap_mdo != NULL) { |
0 | 262 // Update per-method count of trap events. The interpreter |
263 // is updating the MDO to simulate the effect of compiler traps. | |
264 int trap_bci = trap_method->bci_from(bcp(thread)); | |
265 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); | |
266 } | |
267 } | |
268 } | |
269 | |
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270 static Handle get_preinitialized_exception(Klass* k, TRAPS) { |
0 | 271 // get klass |
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272 InstanceKlass* klass = InstanceKlass::cast(k); |
0 | 273 assert(klass->is_initialized(), |
274 "this klass should have been initialized during VM initialization"); | |
275 // create instance - do not call constructor since we may have no | |
276 // (java) stack space left (should assert constructor is empty) | |
277 Handle exception; | |
278 oop exception_oop = klass->allocate_instance(CHECK_(exception)); | |
279 exception = Handle(THREAD, exception_oop); | |
280 if (StackTraceInThrowable) { | |
281 java_lang_Throwable::fill_in_stack_trace(exception); | |
282 } | |
283 return exception; | |
284 } | |
285 | |
286 // Special handling for stack overflow: since we don't have any (java) stack | |
287 // space left we use the pre-allocated & pre-initialized StackOverflowError | |
288 // klass to create an stack overflow error instance. We do not call its | |
289 // constructor for the same reason (it is empty, anyway). | |
290 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) | |
291 Handle exception = get_preinitialized_exception( | |
292 SystemDictionary::StackOverflowError_klass(), | |
293 CHECK); | |
294 THROW_HANDLE(exception); | |
295 IRT_END | |
296 | |
297 | |
298 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) | |
299 // lookup exception klass | |
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300 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
0 | 301 if (ProfileTraps) { |
302 if (s == vmSymbols::java_lang_ArithmeticException()) { | |
303 note_trap(thread, Deoptimization::Reason_div0_check, CHECK); | |
304 } else if (s == vmSymbols::java_lang_NullPointerException()) { | |
305 note_trap(thread, Deoptimization::Reason_null_check, CHECK); | |
306 } | |
307 } | |
308 // create exception | |
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309 Handle exception = Exceptions::new_exception(thread, s, message); |
0 | 310 thread->set_vm_result(exception()); |
311 IRT_END | |
312 | |
313 | |
314 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) | |
315 ResourceMark rm(thread); | |
6983 | 316 const char* klass_name = obj->klass()->external_name(); |
0 | 317 // lookup exception klass |
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318 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
0 | 319 if (ProfileTraps) { |
320 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
321 } | |
322 // create exception, with klass name as detail message | |
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323 Handle exception = Exceptions::new_exception(thread, s, klass_name); |
0 | 324 thread->set_vm_result(exception()); |
325 IRT_END | |
326 | |
327 | |
328 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) | |
329 char message[jintAsStringSize]; | |
330 // lookup exception klass | |
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331 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
0 | 332 if (ProfileTraps) { |
333 note_trap(thread, Deoptimization::Reason_range_check, CHECK); | |
334 } | |
335 // create exception | |
336 sprintf(message, "%d", index); | |
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337 THROW_MSG(s, message); |
0 | 338 IRT_END |
339 | |
340 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( | |
341 JavaThread* thread, oopDesc* obj)) | |
342 | |
343 ResourceMark rm(thread); | |
344 char* message = SharedRuntime::generate_class_cast_message( | |
6983 | 345 thread, obj->klass()->external_name()); |
0 | 346 |
347 if (ProfileTraps) { | |
348 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
349 } | |
350 | |
351 // create exception | |
352 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); | |
353 IRT_END | |
354 | |
355 // exception_handler_for_exception(...) returns the continuation address, | |
356 // the exception oop (via TLS) and sets the bci/bcp for the continuation. | |
357 // The exception oop is returned to make sure it is preserved over GC (it | |
358 // is only on the stack if the exception was thrown explicitly via athrow). | |
359 // During this operation, the expression stack contains the values for the | |
360 // bci where the exception happened. If the exception was propagated back | |
361 // from a call, the expression stack contains the values for the bci at the | |
362 // invoke w/o arguments (i.e., as if one were inside the call). | |
363 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) | |
364 | |
365 Handle h_exception(thread, exception); | |
366 methodHandle h_method (thread, method(thread)); | |
367 constantPoolHandle h_constants(thread, h_method->constants()); | |
368 bool should_repeat; | |
369 int handler_bci; | |
1602 | 370 int current_bci = bci(thread); |
0 | 371 |
372 // Need to do this check first since when _do_not_unlock_if_synchronized | |
373 // is set, we don't want to trigger any classloading which may make calls | |
374 // into java, or surprisingly find a matching exception handler for bci 0 | |
375 // since at this moment the method hasn't been "officially" entered yet. | |
376 if (thread->do_not_unlock_if_synchronized()) { | |
377 ResourceMark rm; | |
378 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); | |
379 thread->set_vm_result(exception); | |
380 #ifdef CC_INTERP | |
381 return (address) -1; | |
382 #else | |
383 return Interpreter::remove_activation_entry(); | |
384 #endif | |
385 } | |
386 | |
387 do { | |
388 should_repeat = false; | |
389 | |
390 // assertions | |
391 #ifdef ASSERT | |
392 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); | |
393 assert(h_exception->is_oop(), "just checking"); | |
394 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError | |
1142 | 395 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
0 | 396 if (ExitVMOnVerifyError) vm_exit(-1); |
397 ShouldNotReachHere(); | |
398 } | |
399 #endif | |
400 | |
401 // tracing | |
402 if (TraceExceptions) { | |
403 ttyLocker ttyl; | |
404 ResourceMark rm(thread); | |
405 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception()); | |
406 tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string()); | |
407 tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread); | |
408 } | |
409 // Don't go paging in something which won't be used. | |
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410 // else if (extable->length() == 0) { |
0 | 411 // // disabled for now - interpreter is not using shortcut yet |
412 // // (shortcut is not to call runtime if we have no exception handlers) | |
413 // // warning("performance bug: should not call runtime if method has no exception handlers"); | |
414 // } | |
415 // for AbortVMOnException flag | |
416 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); | |
417 | |
418 // exception handler lookup | |
419 KlassHandle h_klass(THREAD, h_exception->klass()); | |
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420 handler_bci = Method::fast_exception_handler_bci_for(h_method, h_klass, current_bci, THREAD); |
0 | 421 if (HAS_PENDING_EXCEPTION) { |
422 // We threw an exception while trying to find the exception handler. | |
423 // Transfer the new exception to the exception handle which will | |
424 // be set into thread local storage, and do another lookup for an | |
425 // exception handler for this exception, this time starting at the | |
426 // BCI of the exception handler which caused the exception to be | |
427 // thrown (bug 4307310). | |
428 h_exception = Handle(THREAD, PENDING_EXCEPTION); | |
429 CLEAR_PENDING_EXCEPTION; | |
430 if (handler_bci >= 0) { | |
431 current_bci = handler_bci; | |
432 should_repeat = true; | |
433 } | |
434 } | |
435 } while (should_repeat == true); | |
436 | |
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437 #ifdef GRAAL |
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438 if (h_method->method_data() != NULL) { |
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439 ResourceMark rm(thread); |
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440 ProfileData* pdata = h_method->method_data()->allocate_bci_to_data(current_bci); |
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441 if (pdata != NULL && pdata->is_BitData()) { |
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442 BitData* bit_data = (BitData*) pdata; |
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443 bit_data->set_exception_seen(); |
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444 } |
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445 } |
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446 #endif |
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447 |
0 | 448 // notify JVMTI of an exception throw; JVMTI will detect if this is a first |
449 // time throw or a stack unwinding throw and accordingly notify the debugger | |
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450 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 451 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
452 } | |
453 | |
454 #ifdef CC_INTERP | |
455 address continuation = (address)(intptr_t) handler_bci; | |
456 #else | |
457 address continuation = NULL; | |
458 #endif | |
459 address handler_pc = NULL; | |
460 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { | |
461 // Forward exception to callee (leaving bci/bcp untouched) because (a) no | |
462 // handler in this method, or (b) after a stack overflow there is not yet | |
463 // enough stack space available to reprotect the stack. | |
464 #ifndef CC_INTERP | |
465 continuation = Interpreter::remove_activation_entry(); | |
466 #endif | |
467 // Count this for compilation purposes | |
468 h_method->interpreter_throwout_increment(); | |
469 } else { | |
470 // handler in this method => change bci/bcp to handler bci/bcp and continue there | |
471 handler_pc = h_method->code_base() + handler_bci; | |
472 #ifndef CC_INTERP | |
473 set_bcp_and_mdp(handler_pc, thread); | |
474 continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; | |
475 #endif | |
476 } | |
477 // notify debugger of an exception catch | |
478 // (this is good for exceptions caught in native methods as well) | |
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479 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 480 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
481 } | |
482 | |
483 thread->set_vm_result(h_exception()); | |
484 return continuation; | |
485 IRT_END | |
486 | |
487 | |
488 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) | |
489 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); | |
490 // nothing to do - eventually we should remove this code entirely (see comments @ call sites) | |
491 IRT_END | |
492 | |
493 | |
494 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
495 THROW(vmSymbols::java_lang_AbstractMethodError()); | |
496 IRT_END | |
497 | |
498 | |
499 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) | |
500 THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); | |
501 IRT_END | |
502 | |
503 | |
504 //------------------------------------------------------------------------------------------------------------------------ | |
505 // Fields | |
506 // | |
507 | |
508 IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode)) | |
509 // resolve field | |
510 FieldAccessInfo info; | |
511 constantPoolHandle pool(thread, method(thread)->constants()); | |
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512 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic); |
0 | 513 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
514 | |
515 { | |
516 JvmtiHideSingleStepping jhss(thread); | |
1565 | 517 LinkResolver::resolve_field(info, pool, get_index_u2_cpcache(thread, bytecode), |
0 | 518 bytecode, false, CHECK); |
519 } // end JvmtiHideSingleStepping | |
520 | |
521 // check if link resolution caused cpCache to be updated | |
522 if (already_resolved(thread)) return; | |
523 | |
524 // compute auxiliary field attributes | |
525 TosState state = as_TosState(info.field_type()); | |
526 | |
527 // We need to delay resolving put instructions on final fields | |
528 // until we actually invoke one. This is required so we throw | |
529 // exceptions at the correct place. If we do not resolve completely | |
530 // in the current pass, leaving the put_code set to zero will | |
531 // cause the next put instruction to reresolve. | |
532 Bytecodes::Code put_code = (Bytecodes::Code)0; | |
533 | |
534 // We also need to delay resolving getstatic instructions until the | |
535 // class is intitialized. This is required so that access to the static | |
536 // field will call the initialization function every time until the class | |
537 // is completely initialized ala. in 2.17.5 in JVM Specification. | |
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538 InstanceKlass *klass = InstanceKlass::cast(info.klass()()); |
0 | 539 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) && |
540 !klass->is_initialized()); | |
541 Bytecodes::Code get_code = (Bytecodes::Code)0; | |
542 | |
543 if (!uninitialized_static) { | |
544 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); | |
545 if (is_put || !info.access_flags().is_final()) { | |
546 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); | |
547 } | |
548 } | |
549 | |
550 cache_entry(thread)->set_field( | |
551 get_code, | |
552 put_code, | |
553 info.klass(), | |
554 info.field_index(), | |
555 info.field_offset(), | |
556 state, | |
557 info.access_flags().is_final(), | |
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558 info.access_flags().is_volatile(), |
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559 pool->pool_holder() |
0 | 560 ); |
561 IRT_END | |
562 | |
563 | |
564 //------------------------------------------------------------------------------------------------------------------------ | |
565 // Synchronization | |
566 // | |
567 // The interpreter's synchronization code is factored out so that it can | |
568 // be shared by method invocation and synchronized blocks. | |
569 //%note synchronization_3 | |
570 | |
571 //%note monitor_1 | |
572 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) | |
573 #ifdef ASSERT | |
574 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
575 #endif | |
576 if (PrintBiasedLockingStatistics) { | |
577 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
578 } | |
579 Handle h_obj(thread, elem->obj()); | |
580 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
581 "must be NULL or an object"); | |
582 if (UseBiasedLocking) { | |
583 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
584 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); | |
585 } else { | |
586 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); | |
587 } | |
588 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), | |
589 "must be NULL or an object"); | |
590 #ifdef ASSERT | |
591 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
592 #endif | |
593 IRT_END | |
594 | |
595 | |
596 //%note monitor_1 | |
597 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) | |
598 #ifdef ASSERT | |
599 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
600 #endif | |
601 Handle h_obj(thread, elem->obj()); | |
602 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
603 "must be NULL or an object"); | |
604 if (elem == NULL || h_obj()->is_unlocked()) { | |
605 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
606 } | |
607 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); | |
608 // Free entry. This must be done here, since a pending exception might be installed on | |
609 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. | |
610 elem->set_obj(NULL); | |
611 #ifdef ASSERT | |
612 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
613 #endif | |
614 IRT_END | |
615 | |
616 | |
617 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) | |
618 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
619 IRT_END | |
620 | |
621 | |
622 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) | |
623 // Returns an illegal exception to install into the current thread. The | |
624 // pending_exception flag is cleared so normal exception handling does not | |
625 // trigger. Any current installed exception will be overwritten. This | |
626 // method will be called during an exception unwind. | |
627 | |
628 assert(!HAS_PENDING_EXCEPTION, "no pending exception"); | |
629 Handle exception(thread, thread->vm_result()); | |
630 assert(exception() != NULL, "vm result should be set"); | |
631 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) | |
1142 | 632 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
0 | 633 exception = get_preinitialized_exception( |
634 SystemDictionary::IllegalMonitorStateException_klass(), | |
635 CATCH); | |
636 } | |
637 thread->set_vm_result(exception()); | |
638 IRT_END | |
639 | |
640 | |
641 //------------------------------------------------------------------------------------------------------------------------ | |
642 // Invokes | |
643 | |
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644 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) |
0 | 645 return method->orig_bytecode_at(method->bci_from(bcp)); |
646 IRT_END | |
647 | |
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648 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) |
0 | 649 method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
650 IRT_END | |
651 | |
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652 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) |
0 | 653 JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
654 IRT_END | |
655 | |
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656 IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) { |
0 | 657 // extract receiver from the outgoing argument list if necessary |
658 Handle receiver(thread, NULL); | |
659 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) { | |
660 ResourceMark rm(thread); | |
661 methodHandle m (thread, method(thread)); | |
2142 | 662 Bytecode_invoke call(m, bci(thread)); |
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663 Symbol* signature = call.signature(); |
0 | 664 receiver = Handle(thread, |
665 thread->last_frame().interpreter_callee_receiver(signature)); | |
666 assert(Universe::heap()->is_in_reserved_or_null(receiver()), | |
667 "sanity check"); | |
668 assert(receiver.is_null() || | |
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669 !Universe::heap()->is_in_reserved(receiver->klass()), |
0 | 670 "sanity check"); |
671 } | |
672 | |
673 // resolve method | |
674 CallInfo info; | |
675 constantPoolHandle pool(thread, method(thread)->constants()); | |
676 | |
677 { | |
678 JvmtiHideSingleStepping jhss(thread); | |
679 LinkResolver::resolve_invoke(info, receiver, pool, | |
1565 | 680 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
0 | 681 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
682 int retry_count = 0; | |
683 while (info.resolved_method()->is_old()) { | |
684 // It is very unlikely that method is redefined more than 100 times | |
685 // in the middle of resolve. If it is looping here more than 100 times | |
686 // means then there could be a bug here. | |
687 guarantee((retry_count++ < 100), | |
688 "Could not resolve to latest version of redefined method"); | |
689 // method is redefined in the middle of resolve so re-try. | |
690 LinkResolver::resolve_invoke(info, receiver, pool, | |
1565 | 691 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
0 | 692 } |
693 } | |
694 } // end JvmtiHideSingleStepping | |
695 | |
696 // check if link resolution caused cpCache to be updated | |
697 if (already_resolved(thread)) return; | |
698 | |
699 if (bytecode == Bytecodes::_invokeinterface) { | |
700 | |
701 if (TraceItables && Verbose) { | |
702 ResourceMark rm(thread); | |
703 tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string()); | |
704 } | |
705 if (info.resolved_method()->method_holder() == | |
1142 | 706 SystemDictionary::Object_klass()) { |
0 | 707 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
708 // (see also cpCacheOop.cpp for details) | |
709 methodHandle rm = info.resolved_method(); | |
710 assert(rm->is_final() || info.has_vtable_index(), | |
711 "should have been set already"); | |
712 cache_entry(thread)->set_method(bytecode, rm, info.vtable_index()); | |
713 } else { | |
714 // Setup itable entry | |
715 int index = klassItable::compute_itable_index(info.resolved_method()()); | |
716 cache_entry(thread)->set_interface_call(info.resolved_method(), index); | |
717 } | |
718 } else { | |
719 cache_entry(thread)->set_method( | |
720 bytecode, | |
721 info.resolved_method(), | |
722 info.vtable_index()); | |
723 } | |
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724 } |
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725 IRT_END |
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726 |
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727 |
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728 // First time execution: Resolve symbols, create a permanent MethodType object. |
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729 IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) { |
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730 assert(EnableInvokeDynamic, ""); |
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731 const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
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732 |
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733 // resolve method |
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734 CallInfo info; |
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735 constantPoolHandle pool(thread, method(thread)->constants()); |
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736 |
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737 { |
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738 JvmtiHideSingleStepping jhss(thread); |
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739 LinkResolver::resolve_invoke(info, Handle(), pool, |
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740 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
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741 } // end JvmtiHideSingleStepping |
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742 |
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743 cache_entry(thread)->set_method_handle(pool, info); |
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744 } |
0 | 745 IRT_END |
746 | |
747 | |
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748 // First time execution: Resolve symbols, create a permanent CallSite object. |
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749 IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) { |
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750 assert(EnableInvokeDynamic, ""); |
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751 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
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752 |
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753 //TO DO: consider passing BCI to Java. |
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754 // int caller_bci = method(thread)->bci_from(bcp(thread)); |
726
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755 |
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756 // resolve method |
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757 CallInfo info; |
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758 constantPoolHandle pool(thread, method(thread)->constants()); |
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759 int index = get_index_u4(thread, bytecode); |
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760 { |
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761 JvmtiHideSingleStepping jhss(thread); |
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762 LinkResolver::resolve_invoke(info, Handle(), pool, |
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763 index, bytecode, CHECK); |
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764 } // end JvmtiHideSingleStepping |
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765 |
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766 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); |
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767 cp_cache_entry->set_dynamic_call(pool, info); |
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768 } |
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769 IRT_END |
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770 |
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771 |
0 | 772 //------------------------------------------------------------------------------------------------------------------------ |
773 // Miscellaneous | |
774 | |
775 | |
941 | 776 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { |
777 nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); | |
778 assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); | |
779 if (branch_bcp != NULL && nm != NULL) { | |
780 // This was a successful request for an OSR nmethod. Because | |
781 // frequency_counter_overflow_inner ends with a safepoint check, | |
782 // nm could have been unloaded so look it up again. It's unsafe | |
783 // to examine nm directly since it might have been freed and used | |
784 // for something else. | |
785 frame fr = thread->last_frame(); | |
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786 Method* method = fr.interpreter_frame_method(); |
941 | 787 int bci = method->bci_from(fr.interpreter_frame_bcp()); |
1783 | 788 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
941 | 789 } |
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790 #ifndef PRODUCT |
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791 if (TraceOnStackReplacement) { |
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792 if (nm != NULL) { |
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793 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry()); |
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794 nm->print(); |
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795 } |
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796 } |
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797 #endif |
941 | 798 return nm; |
799 } | |
800 | |
0 | 801 IRT_ENTRY(nmethod*, |
941 | 802 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
0 | 803 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
804 // flag, in case this method triggers classloading which will call into Java. | |
805 UnlockFlagSaver fs(thread); | |
806 | |
807 frame fr = thread->last_frame(); | |
808 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
809 methodHandle method(thread, fr.interpreter_frame_method()); | |
1783 | 810 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; |
811 const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; | |
812 | |
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813 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
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814 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
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815 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
0 | 816 |
1783 | 817 if (osr_nm != NULL) { |
818 // We may need to do on-stack replacement which requires that no | |
819 // monitors in the activation are biased because their | |
820 // BasicObjectLocks will need to migrate during OSR. Force | |
821 // unbiasing of all monitors in the activation now (even though | |
822 // the OSR nmethod might be invalidated) because we don't have a | |
823 // safepoint opportunity later once the migration begins. | |
824 if (UseBiasedLocking) { | |
825 ResourceMark rm; | |
826 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); | |
827 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
828 kptr < fr.interpreter_frame_monitor_begin(); | |
829 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
830 if( kptr->obj() != NULL ) { | |
831 objects_to_revoke->append(Handle(THREAD, kptr->obj())); | |
832 } | |
0 | 833 } |
1783 | 834 BiasedLocking::revoke(objects_to_revoke); |
0 | 835 } |
836 } | |
1783 | 837 return osr_nm; |
0 | 838 IRT_END |
839 | |
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840 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) |
0 | 841 assert(ProfileInterpreter, "must be profiling interpreter"); |
842 int bci = method->bci_from(cur_bcp); | |
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843 MethodData* mdo = method->method_data(); |
0 | 844 if (mdo == NULL) return 0; |
845 return mdo->bci_to_di(bci); | |
846 IRT_END | |
847 | |
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848 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
0 | 849 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
850 // flag, in case this method triggers classloading which will call into Java. | |
851 UnlockFlagSaver fs(thread); | |
852 | |
853 assert(ProfileInterpreter, "must be profiling interpreter"); | |
854 frame fr = thread->last_frame(); | |
855 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
856 methodHandle method(thread, fr.interpreter_frame_method()); | |
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857 Method::build_interpreter_method_data(method, THREAD); |
0 | 858 if (HAS_PENDING_EXCEPTION) { |
859 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
860 CLEAR_PENDING_EXCEPTION; | |
861 // and fall through... | |
862 } | |
863 IRT_END | |
864 | |
865 | |
866 #ifdef ASSERT | |
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867 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) |
0 | 868 assert(ProfileInterpreter, "must be profiling interpreter"); |
869 | |
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870 MethodData* mdo = method->method_data(); |
0 | 871 assert(mdo != NULL, "must not be null"); |
872 | |
873 int bci = method->bci_from(bcp); | |
874 | |
875 address mdp2 = mdo->bci_to_dp(bci); | |
876 if (mdp != mdp2) { | |
877 ResourceMark rm; | |
878 ResetNoHandleMark rnm; // In a LEAF entry. | |
879 HandleMark hm; | |
880 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); | |
881 int current_di = mdo->dp_to_di(mdp); | |
882 int expected_di = mdo->dp_to_di(mdp2); | |
883 tty->print_cr(" actual di %d expected di %d", current_di, expected_di); | |
884 int expected_approx_bci = mdo->data_at(expected_di)->bci(); | |
885 int approx_bci = -1; | |
886 if (current_di >= 0) { | |
887 approx_bci = mdo->data_at(current_di)->bci(); | |
888 } | |
889 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); | |
890 mdo->print_on(tty); | |
891 method->print_codes(); | |
892 } | |
893 assert(mdp == mdp2, "wrong mdp"); | |
894 IRT_END | |
895 #endif // ASSERT | |
896 | |
897 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) | |
898 assert(ProfileInterpreter, "must be profiling interpreter"); | |
899 ResourceMark rm(thread); | |
900 HandleMark hm(thread); | |
901 frame fr = thread->last_frame(); | |
902 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
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903 MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); |
0 | 904 |
905 // Grab a lock to ensure atomic access to setting the return bci and | |
906 // the displacement. This can block and GC, invalidating all naked oops. | |
907 MutexLocker ml(RetData_lock); | |
908 | |
909 // ProfileData is essentially a wrapper around a derived oop, so we | |
910 // need to take the lock before making any ProfileData structures. | |
911 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); | |
912 RetData* rdata = data->as_RetData(); | |
913 address new_mdp = rdata->fixup_ret(return_bci, h_mdo); | |
914 fr.interpreter_frame_set_mdp(new_mdp); | |
915 IRT_END | |
916 | |
917 | |
918 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) | |
919 // We used to need an explict preserve_arguments here for invoke bytecodes. However, | |
920 // stack traversal automatically takes care of preserving arguments for invoke, so | |
921 // this is no longer needed. | |
922 | |
923 // IRT_END does an implicit safepoint check, hence we are guaranteed to block | |
924 // if this is called during a safepoint | |
925 | |
926 if (JvmtiExport::should_post_single_step()) { | |
927 // We are called during regular safepoints and when the VM is | |
928 // single stepping. If any thread is marked for single stepping, | |
929 // then we may have JVMTI work to do. | |
930 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); | |
931 } | |
932 IRT_END | |
933 | |
934 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, | |
935 ConstantPoolCacheEntry *cp_entry)) | |
936 | |
937 // check the access_flags for the field in the klass | |
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939 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); |
0 | 940 int index = cp_entry->field_index(); |
3938 | 941 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
0 | 942 |
943 switch(cp_entry->flag_state()) { | |
944 case btos: // fall through | |
945 case ctos: // fall through | |
946 case stos: // fall through | |
947 case itos: // fall through | |
948 case ftos: // fall through | |
949 case ltos: // fall through | |
950 case dtos: // fall through | |
951 case atos: break; | |
952 default: ShouldNotReachHere(); return; | |
953 } | |
954 bool is_static = (obj == NULL); | |
955 HandleMark hm(thread); | |
956 | |
957 Handle h_obj; | |
958 if (!is_static) { | |
959 // non-static field accessors have an object, but we need a handle | |
960 h_obj = Handle(thread, obj); | |
961 } | |
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962 instanceKlassHandle h_cp_entry_f1(thread, (Klass*)cp_entry->f1_as_klass()); |
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963 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static); |
0 | 964 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid); |
965 IRT_END | |
966 | |
967 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, | |
968 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) | |
969 | |
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970 Klass* k = (Klass*)cp_entry->f1_as_klass(); |
0 | 971 |
972 // check the access_flags for the field in the klass | |
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973 InstanceKlass* ik = InstanceKlass::cast(k); |
0 | 974 int index = cp_entry->field_index(); |
975 // bail out if field modifications are not watched | |
3938 | 976 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
0 | 977 |
978 char sig_type = '\0'; | |
979 | |
980 switch(cp_entry->flag_state()) { | |
981 case btos: sig_type = 'Z'; break; | |
982 case ctos: sig_type = 'C'; break; | |
983 case stos: sig_type = 'S'; break; | |
984 case itos: sig_type = 'I'; break; | |
985 case ftos: sig_type = 'F'; break; | |
986 case atos: sig_type = 'L'; break; | |
987 case ltos: sig_type = 'J'; break; | |
988 case dtos: sig_type = 'D'; break; | |
989 default: ShouldNotReachHere(); return; | |
990 } | |
991 bool is_static = (obj == NULL); | |
992 | |
993 HandleMark hm(thread); | |
994 instanceKlassHandle h_klass(thread, k); | |
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995 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static); |
0 | 996 jvalue fvalue; |
997 #ifdef _LP64 | |
998 fvalue = *value; | |
999 #else | |
1000 // Long/double values are stored unaligned and also noncontiguously with | |
1001 // tagged stacks. We can't just do a simple assignment even in the non- | |
1002 // J/D cases because a C++ compiler is allowed to assume that a jvalue is | |
1003 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. | |
1004 // We assume that the two halves of longs/doubles are stored in interpreter | |
1005 // stack slots in platform-endian order. | |
1006 jlong_accessor u; | |
1007 jint* newval = (jint*)value; | |
1008 u.words[0] = newval[0]; | |
1506 | 1009 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
0 | 1010 fvalue.j = u.long_value; |
1011 #endif // _LP64 | |
1012 | |
1013 Handle h_obj; | |
1014 if (!is_static) { | |
1015 // non-static field accessors have an object, but we need a handle | |
1016 h_obj = Handle(thread, obj); | |
1017 } | |
1018 | |
1019 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj, | |
1020 fid, sig_type, &fvalue); | |
1021 IRT_END | |
1022 | |
1023 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) | |
1024 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
1025 IRT_END | |
1026 | |
1027 | |
1028 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) | |
1029 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
1030 IRT_END | |
1031 | |
1032 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) | |
1033 { | |
1034 return (Interpreter::contains(pc) ? 1 : 0); | |
1035 } | |
1036 IRT_END | |
1037 | |
1038 | |
1039 // Implementation of SignatureHandlerLibrary | |
1040 | |
1041 address SignatureHandlerLibrary::set_handler_blob() { | |
1042 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); | |
1043 if (handler_blob == NULL) { | |
1044 return NULL; | |
1045 } | |
1748 | 1046 address handler = handler_blob->code_begin(); |
0 | 1047 _handler_blob = handler_blob; |
1048 _handler = handler; | |
1049 return handler; | |
1050 } | |
1051 | |
1052 void SignatureHandlerLibrary::initialize() { | |
1053 if (_fingerprints != NULL) { | |
1054 return; | |
1055 } | |
1056 if (set_handler_blob() == NULL) { | |
1057 vm_exit_out_of_memory(blob_size, "native signature handlers"); | |
1058 } | |
1059 | |
1060 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", | |
1061 SignatureHandlerLibrary::buffer_size); | |
1748 | 1062 _buffer = bb->code_begin(); |
0 | 1063 |
6197 | 1064 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
1065 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); | |
0 | 1066 } |
1067 | |
1068 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { | |
1069 address handler = _handler; | |
1748 | 1070 int insts_size = buffer->pure_insts_size(); |
1071 if (handler + insts_size > _handler_blob->code_end()) { | |
0 | 1072 // get a new handler blob |
1073 handler = set_handler_blob(); | |
1074 } | |
1075 if (handler != NULL) { | |
1748 | 1076 memcpy(handler, buffer->insts_begin(), insts_size); |
0 | 1077 pd_set_handler(handler); |
1748 | 1078 ICache::invalidate_range(handler, insts_size); |
1079 _handler = handler + insts_size; | |
0 | 1080 } |
1081 return handler; | |
1082 } | |
1083 | |
1084 void SignatureHandlerLibrary::add(methodHandle method) { | |
1085 if (method->signature_handler() == NULL) { | |
1086 // use slow signature handler if we can't do better | |
1087 int handler_index = -1; | |
1088 // check if we can use customized (fast) signature handler | |
1089 if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { | |
1090 // use customized signature handler | |
1091 MutexLocker mu(SignatureHandlerLibrary_lock); | |
1092 // make sure data structure is initialized | |
1093 initialize(); | |
1094 // lookup method signature's fingerprint | |
1095 uint64_t fingerprint = Fingerprinter(method).fingerprint(); | |
1096 handler_index = _fingerprints->find(fingerprint); | |
1097 // create handler if necessary | |
1098 if (handler_index < 0) { | |
1099 ResourceMark rm; | |
1100 ptrdiff_t align_offset = (address) | |
1101 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer; | |
1102 CodeBuffer buffer((address)(_buffer + align_offset), | |
1103 SignatureHandlerLibrary::buffer_size - align_offset); | |
1104 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); | |
1105 // copy into code heap | |
1106 address handler = set_handler(&buffer); | |
1107 if (handler == NULL) { | |
1108 // use slow signature handler | |
1109 } else { | |
1110 // debugging suppport | |
1111 if (PrintSignatureHandlers) { | |
1112 tty->cr(); | |
1113 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", | |
1114 _handlers->length(), | |
1115 (method->is_static() ? "static" : "receiver"), | |
1116 method->name_and_sig_as_C_string(), | |
1117 fingerprint, | |
1748 | 1118 buffer.insts_size()); |
1119 Disassembler::decode(handler, handler + buffer.insts_size()); | |
0 | 1120 #ifndef PRODUCT |
1121 tty->print_cr(" --- associated result handler ---"); | |
1122 address rh_begin = Interpreter::result_handler(method()->result_type()); | |
1123 address rh_end = rh_begin; | |
1124 while (*(int*)rh_end != 0) { | |
1125 rh_end += sizeof(int); | |
1126 } | |
1127 Disassembler::decode(rh_begin, rh_end); | |
1128 #endif | |
1129 } | |
1130 // add handler to library | |
1131 _fingerprints->append(fingerprint); | |
1132 _handlers->append(handler); | |
1133 // set handler index | |
1134 assert(_fingerprints->length() == _handlers->length(), "sanity check"); | |
1135 handler_index = _fingerprints->length() - 1; | |
1136 } | |
1137 } | |
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1138 // Set handler under SignatureHandlerLibrary_lock |
0 | 1139 if (handler_index < 0) { |
1140 // use generic signature handler | |
1141 method->set_signature_handler(Interpreter::slow_signature_handler()); | |
1142 } else { | |
1143 // set handler | |
1144 method->set_signature_handler(_handlers->at(handler_index)); | |
1145 } | |
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1146 } else { |
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1147 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
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1148 // use generic signature handler |
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1149 method->set_signature_handler(Interpreter::slow_signature_handler()); |
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1150 } |
0 | 1151 } |
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1152 #ifdef ASSERT |
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1153 int handler_index = -1; |
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1154 int fingerprint_index = -2; |
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1155 { |
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1156 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
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1157 // in any way if accessed from multiple threads. To avoid races with another |
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1158 // thread which may change the arrays in the above, mutex protected block, we |
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1159 // have to protect this read access here with the same mutex as well! |
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1160 MutexLocker mu(SignatureHandlerLibrary_lock); |
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1161 if (_handlers != NULL) { |
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1162 handler_index = _handlers->find(method->signature_handler()); |
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1163 fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint()); |
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1164 } |
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1165 } |
0 | 1166 assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
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1167 handler_index == fingerprint_index, "sanity check"); |
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1168 #endif // ASSERT |
0 | 1169 } |
1170 | |
1171 | |
1172 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; | |
1173 address SignatureHandlerLibrary::_handler = NULL; | |
1174 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; | |
1175 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; | |
1176 address SignatureHandlerLibrary::_buffer = NULL; | |
1177 | |
1178 | |
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1179 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) |
0 | 1180 methodHandle m(thread, method); |
1181 assert(m->is_native(), "sanity check"); | |
1182 // lookup native function entry point if it doesn't exist | |
1183 bool in_base_library; | |
1184 if (!m->has_native_function()) { | |
1185 NativeLookup::lookup(m, in_base_library, CHECK); | |
1186 } | |
1187 // make sure signature handler is installed | |
1188 SignatureHandlerLibrary::add(m); | |
1189 // The interpreter entry point checks the signature handler first, | |
1190 // before trying to fetch the native entry point and klass mirror. | |
1191 // We must set the signature handler last, so that multiple processors | |
1192 // preparing the same method will be sure to see non-null entry & mirror. | |
1193 IRT_END | |
1194 | |
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1195 #if defined(IA32) || defined(AMD64) || defined(ARM) |
0 | 1196 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) |
1197 if (src_address == dest_address) { | |
1198 return; | |
1199 } | |
1200 ResetNoHandleMark rnm; // In a LEAF entry. | |
1201 HandleMark hm; | |
1202 ResourceMark rm; | |
1203 frame fr = thread->last_frame(); | |
1204 assert(fr.is_interpreted_frame(), ""); | |
1205 jint bci = fr.interpreter_frame_bci(); | |
1206 methodHandle mh(thread, fr.interpreter_frame_method()); | |
2142 | 1207 Bytecode_invoke invoke(mh, bci); |
1208 ArgumentSizeComputer asc(invoke.signature()); | |
1209 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver | |
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1210 Copy::conjoint_jbytes(src_address, dest_address, |
1506 | 1211 size_of_arguments * Interpreter::stackElementSize); |
0 | 1212 IRT_END |
1213 #endif |