Mercurial > hg > truffle
annotate src/share/vm/interpreter/interpreterRuntime.cpp @ 7090:05ce1defa4f9
Common out some parts of UnsafeLoad/Store in UnsafeAccess
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 29 Nov 2012 13:24:08 +0100 |
parents | 2cb439954abf |
children | 5d0bb7d52783 |
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" | |
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" | |
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36 #include "oops/constantPool.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
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38 #include "oops/methodData.hpp" |
1972 | 39 #include "oops/objArrayKlass.hpp" |
40 #include "oops/oop.inline.hpp" | |
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41 #include "oops/symbol.hpp" |
1972 | 42 #include "prims/jvmtiExport.hpp" |
43 #include "prims/nativeLookup.hpp" | |
44 #include "runtime/biasedLocking.hpp" | |
45 #include "runtime/compilationPolicy.hpp" | |
46 #include "runtime/deoptimization.hpp" | |
47 #include "runtime/fieldDescriptor.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/java.hpp" | |
51 #include "runtime/jfieldIDWorkaround.hpp" | |
52 #include "runtime/osThread.hpp" | |
53 #include "runtime/sharedRuntime.hpp" | |
54 #include "runtime/stubRoutines.hpp" | |
55 #include "runtime/synchronizer.hpp" | |
56 #include "runtime/threadCritical.hpp" | |
57 #include "utilities/events.hpp" | |
58 #ifdef TARGET_ARCH_x86 | |
59 # include "vm_version_x86.hpp" | |
60 #endif | |
61 #ifdef TARGET_ARCH_sparc | |
62 # include "vm_version_sparc.hpp" | |
63 #endif | |
64 #ifdef TARGET_ARCH_zero | |
65 # include "vm_version_zero.hpp" | |
66 #endif | |
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67 #ifdef TARGET_ARCH_arm |
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68 # include "vm_version_arm.hpp" |
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69 #endif |
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70 #ifdef TARGET_ARCH_ppc |
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71 # include "vm_version_ppc.hpp" |
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72 #endif |
1972 | 73 #ifdef COMPILER2 |
74 #include "opto/runtime.hpp" | |
75 #endif | |
0 | 76 |
77 class UnlockFlagSaver { | |
78 private: | |
79 JavaThread* _thread; | |
80 bool _do_not_unlock; | |
81 public: | |
82 UnlockFlagSaver(JavaThread* t) { | |
83 _thread = t; | |
84 _do_not_unlock = t->do_not_unlock_if_synchronized(); | |
85 t->set_do_not_unlock_if_synchronized(false); | |
86 } | |
87 ~UnlockFlagSaver() { | |
88 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); | |
89 } | |
90 }; | |
91 | |
92 //------------------------------------------------------------------------------------------------------------------------ | |
93 // State accessors | |
94 | |
95 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { | |
96 last_frame(thread).interpreter_frame_set_bcp(bcp); | |
97 if (ProfileInterpreter) { | |
98 // ProfileTraps uses MDOs independently of ProfileInterpreter. | |
99 // That is why we must check both ProfileInterpreter and mdo != NULL. | |
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100 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
0 | 101 if (mdo != NULL) { |
102 NEEDS_CLEANUP; | |
103 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); | |
104 } | |
105 } | |
106 } | |
107 | |
108 //------------------------------------------------------------------------------------------------------------------------ | |
109 // Constants | |
110 | |
111 | |
112 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) | |
113 // access constant pool | |
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114 ConstantPool* pool = method(thread)->constants(); |
1565 | 115 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
0 | 116 constantTag tag = pool->tag_at(index); |
117 | |
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118 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); |
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119 Klass* klass = pool->klass_at(index, CHECK); |
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120 oop java_class = klass->java_mirror(); |
0 | 121 thread->set_vm_result(java_class); |
122 IRT_END | |
123 | |
1602 | 124 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
125 assert(bytecode == Bytecodes::_fast_aldc || | |
126 bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); | |
127 ResourceMark rm(thread); | |
128 methodHandle m (thread, method(thread)); | |
2142 | 129 Bytecode_loadconstant ldc(m, bci(thread)); |
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130 oop result = ldc.resolve_constant(CHECK); |
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131 #ifdef ASSERT |
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132 { |
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133 // The bytecode wrappers aren't GC-safe so construct a new one |
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134 Bytecode_loadconstant ldc2(m, bci(thread)); |
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135 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); |
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136 assert(result == coop, "expected result for assembly code"); |
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137 } |
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138 #endif |
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139 thread->set_vm_result(result); |
1602 | 140 } |
141 IRT_END | |
142 | |
0 | 143 |
144 //------------------------------------------------------------------------------------------------------------------------ | |
145 // Allocation | |
146 | |
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147 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) |
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148 Klass* k_oop = pool->klass_at(index, CHECK); |
0 | 149 instanceKlassHandle klass (THREAD, k_oop); |
150 | |
151 // Make sure we are not instantiating an abstract klass | |
152 klass->check_valid_for_instantiation(true, CHECK); | |
153 | |
154 // Make sure klass is initialized | |
155 klass->initialize(CHECK); | |
156 | |
157 // At this point the class may not be fully initialized | |
158 // because of recursive initialization. If it is fully | |
159 // initialized & has_finalized is not set, we rewrite | |
160 // it into its fast version (Note: no locking is needed | |
161 // here since this is an atomic byte write and can be | |
162 // done more than once). | |
163 // | |
164 // Note: In case of classes with has_finalized we don't | |
165 // rewrite since that saves us an extra check in | |
166 // the fast version which then would call the | |
167 // slow version anyway (and do a call back into | |
168 // Java). | |
169 // If we have a breakpoint, then we don't rewrite | |
170 // because the _breakpoint bytecode would be lost. | |
171 oop obj = klass->allocate_instance(CHECK); | |
172 thread->set_vm_result(obj); | |
173 IRT_END | |
174 | |
175 | |
176 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) | |
177 oop obj = oopFactory::new_typeArray(type, size, CHECK); | |
178 thread->set_vm_result(obj); | |
179 IRT_END | |
180 | |
181 | |
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182 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) |
0 | 183 // Note: no oopHandle for pool & klass needed since they are not used |
184 // anymore after new_objArray() and no GC can happen before. | |
185 // (This may have to change if this code changes!) | |
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186 Klass* klass = pool->klass_at(index, CHECK); |
0 | 187 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
188 thread->set_vm_result(obj); | |
189 IRT_END | |
190 | |
191 | |
192 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) | |
193 // We may want to pass in more arguments - could make this slightly faster | |
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194 ConstantPool* constants = method(thread)->constants(); |
1565 | 195 int i = get_index_u2(thread, Bytecodes::_multianewarray); |
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196 Klass* klass = constants->klass_at(i, CHECK); |
0 | 197 int nof_dims = number_of_dimensions(thread); |
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198 assert(klass->is_klass(), "not a class"); |
0 | 199 assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
200 | |
201 // We must create an array of jints to pass to multi_allocate. | |
202 ResourceMark rm(thread); | |
203 const int small_dims = 10; | |
204 jint dim_array[small_dims]; | |
205 jint *dims = &dim_array[0]; | |
206 if (nof_dims > small_dims) { | |
207 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); | |
208 } | |
209 for (int index = 0; index < nof_dims; index++) { | |
210 // offset from first_size_address is addressed as local[index] | |
211 int n = Interpreter::local_offset_in_bytes(index)/jintSize; | |
212 dims[index] = first_size_address[n]; | |
213 } | |
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214 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
0 | 215 thread->set_vm_result(obj); |
216 IRT_END | |
217 | |
218 | |
219 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
220 assert(obj->is_oop(), "must be a valid oop"); | |
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221 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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222 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 223 IRT_END |
224 | |
225 | |
226 // Quicken instance-of and check-cast bytecodes | |
227 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) | |
228 // Force resolving; quicken the bytecode | |
1565 | 229 int which = get_index_u2(thread, Bytecodes::_checkcast); |
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230 ConstantPool* cpool = method(thread)->constants(); |
0 | 231 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
232 // program we might have seen an unquick'd bytecode in the interpreter but have another | |
233 // thread quicken the bytecode before we get here. | |
234 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); | |
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235 Klass* klass = cpool->klass_at(which, CHECK); |
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236 thread->set_vm_result_2(klass); |
0 | 237 IRT_END |
238 | |
239 | |
240 //------------------------------------------------------------------------------------------------------------------------ | |
241 // Exceptions | |
242 | |
243 // Assume the compiler is (or will be) interested in this event. | |
244 // If necessary, create an MDO to hold the information, and record it. | |
245 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { | |
246 assert(ProfileTraps, "call me only if profiling"); | |
247 methodHandle trap_method(thread, method(thread)); | |
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248 |
0 | 249 if (trap_method.not_null()) { |
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250 MethodData* trap_mdo = trap_method->method_data(); |
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251 if (trap_mdo == NULL) { |
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252 Method::build_interpreter_method_data(trap_method, THREAD); |
0 | 253 if (HAS_PENDING_EXCEPTION) { |
254 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
255 CLEAR_PENDING_EXCEPTION; | |
256 } | |
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257 trap_mdo = trap_method->method_data(); |
0 | 258 // and fall through... |
259 } | |
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260 if (trap_mdo != NULL) { |
0 | 261 // Update per-method count of trap events. The interpreter |
262 // is updating the MDO to simulate the effect of compiler traps. | |
263 int trap_bci = trap_method->bci_from(bcp(thread)); | |
264 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); | |
265 } | |
266 } | |
267 } | |
268 | |
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269 static Handle get_preinitialized_exception(Klass* k, TRAPS) { |
0 | 270 // get klass |
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271 InstanceKlass* klass = InstanceKlass::cast(k); |
0 | 272 assert(klass->is_initialized(), |
273 "this klass should have been initialized during VM initialization"); | |
274 // create instance - do not call constructor since we may have no | |
275 // (java) stack space left (should assert constructor is empty) | |
276 Handle exception; | |
277 oop exception_oop = klass->allocate_instance(CHECK_(exception)); | |
278 exception = Handle(THREAD, exception_oop); | |
279 if (StackTraceInThrowable) { | |
280 java_lang_Throwable::fill_in_stack_trace(exception); | |
281 } | |
282 return exception; | |
283 } | |
284 | |
285 // Special handling for stack overflow: since we don't have any (java) stack | |
286 // space left we use the pre-allocated & pre-initialized StackOverflowError | |
287 // klass to create an stack overflow error instance. We do not call its | |
288 // constructor for the same reason (it is empty, anyway). | |
289 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) | |
290 Handle exception = get_preinitialized_exception( | |
291 SystemDictionary::StackOverflowError_klass(), | |
292 CHECK); | |
293 THROW_HANDLE(exception); | |
294 IRT_END | |
295 | |
296 | |
297 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) | |
298 // lookup exception klass | |
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299 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
0 | 300 if (ProfileTraps) { |
301 if (s == vmSymbols::java_lang_ArithmeticException()) { | |
302 note_trap(thread, Deoptimization::Reason_div0_check, CHECK); | |
303 } else if (s == vmSymbols::java_lang_NullPointerException()) { | |
304 note_trap(thread, Deoptimization::Reason_null_check, CHECK); | |
305 } | |
306 } | |
307 // create exception | |
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308 Handle exception = Exceptions::new_exception(thread, s, message); |
0 | 309 thread->set_vm_result(exception()); |
310 IRT_END | |
311 | |
312 | |
313 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) | |
314 ResourceMark rm(thread); | |
6983 | 315 const char* klass_name = obj->klass()->external_name(); |
0 | 316 // lookup exception klass |
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317 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
0 | 318 if (ProfileTraps) { |
319 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
320 } | |
321 // create exception, with klass name as detail message | |
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322 Handle exception = Exceptions::new_exception(thread, s, klass_name); |
0 | 323 thread->set_vm_result(exception()); |
324 IRT_END | |
325 | |
326 | |
327 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) | |
328 char message[jintAsStringSize]; | |
329 // lookup exception klass | |
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330 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
0 | 331 if (ProfileTraps) { |
332 note_trap(thread, Deoptimization::Reason_range_check, CHECK); | |
333 } | |
334 // create exception | |
335 sprintf(message, "%d", index); | |
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336 THROW_MSG(s, message); |
0 | 337 IRT_END |
338 | |
339 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( | |
340 JavaThread* thread, oopDesc* obj)) | |
341 | |
342 ResourceMark rm(thread); | |
343 char* message = SharedRuntime::generate_class_cast_message( | |
6983 | 344 thread, obj->klass()->external_name()); |
0 | 345 |
346 if (ProfileTraps) { | |
347 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
348 } | |
349 | |
350 // create exception | |
351 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); | |
352 IRT_END | |
353 | |
354 // exception_handler_for_exception(...) returns the continuation address, | |
355 // the exception oop (via TLS) and sets the bci/bcp for the continuation. | |
356 // The exception oop is returned to make sure it is preserved over GC (it | |
357 // is only on the stack if the exception was thrown explicitly via athrow). | |
358 // During this operation, the expression stack contains the values for the | |
359 // bci where the exception happened. If the exception was propagated back | |
360 // from a call, the expression stack contains the values for the bci at the | |
361 // invoke w/o arguments (i.e., as if one were inside the call). | |
362 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) | |
363 | |
364 Handle h_exception(thread, exception); | |
365 methodHandle h_method (thread, method(thread)); | |
366 constantPoolHandle h_constants(thread, h_method->constants()); | |
367 bool should_repeat; | |
368 int handler_bci; | |
1602 | 369 int current_bci = bci(thread); |
0 | 370 |
371 // Need to do this check first since when _do_not_unlock_if_synchronized | |
372 // is set, we don't want to trigger any classloading which may make calls | |
373 // into java, or surprisingly find a matching exception handler for bci 0 | |
374 // since at this moment the method hasn't been "officially" entered yet. | |
375 if (thread->do_not_unlock_if_synchronized()) { | |
376 ResourceMark rm; | |
377 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); | |
378 thread->set_vm_result(exception); | |
379 #ifdef CC_INTERP | |
380 return (address) -1; | |
381 #else | |
382 return Interpreter::remove_activation_entry(); | |
383 #endif | |
384 } | |
385 | |
386 do { | |
387 should_repeat = false; | |
388 | |
389 // assertions | |
390 #ifdef ASSERT | |
391 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); | |
392 assert(h_exception->is_oop(), "just checking"); | |
393 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError | |
1142 | 394 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
0 | 395 if (ExitVMOnVerifyError) vm_exit(-1); |
396 ShouldNotReachHere(); | |
397 } | |
398 #endif | |
399 | |
400 // tracing | |
401 if (TraceExceptions) { | |
402 ttyLocker ttyl; | |
403 ResourceMark rm(thread); | |
404 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception()); | |
405 tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string()); | |
406 tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread); | |
407 } | |
408 // Don't go paging in something which won't be used. | |
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409 // else if (extable->length() == 0) { |
0 | 410 // // disabled for now - interpreter is not using shortcut yet |
411 // // (shortcut is not to call runtime if we have no exception handlers) | |
412 // // warning("performance bug: should not call runtime if method has no exception handlers"); | |
413 // } | |
414 // for AbortVMOnException flag | |
415 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); | |
416 | |
417 // exception handler lookup | |
418 KlassHandle h_klass(THREAD, h_exception->klass()); | |
419 handler_bci = h_method->fast_exception_handler_bci_for(h_klass, current_bci, THREAD); | |
420 if (HAS_PENDING_EXCEPTION) { | |
421 // We threw an exception while trying to find the exception handler. | |
422 // Transfer the new exception to the exception handle which will | |
423 // be set into thread local storage, and do another lookup for an | |
424 // exception handler for this exception, this time starting at the | |
425 // BCI of the exception handler which caused the exception to be | |
426 // thrown (bug 4307310). | |
427 h_exception = Handle(THREAD, PENDING_EXCEPTION); | |
428 CLEAR_PENDING_EXCEPTION; | |
429 if (handler_bci >= 0) { | |
430 current_bci = handler_bci; | |
431 should_repeat = true; | |
432 } | |
433 } | |
434 } while (should_repeat == true); | |
435 | |
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436 #ifdef GRAAL |
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437 if (h_method->method_data() != NULL) { |
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438 ResourceMark rm(thread); |
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439 ProfileData* pdata = h_method->method_data()->allocate_bci_to_data(current_bci); |
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440 if (pdata != NULL) { |
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441 int tstate0 = pdata->trap_state(); |
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442 int tstate1 = Deoptimization::trap_state_set_recompiled(tstate0, true); |
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443 if (tstate1 != tstate0) { |
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444 pdata->set_trap_state(tstate1); |
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445 } |
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446 } |
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447 } |
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448 #endif |
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449 |
0 | 450 // notify JVMTI of an exception throw; JVMTI will detect if this is a first |
451 // time throw or a stack unwinding throw and accordingly notify the debugger | |
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452 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 453 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
454 } | |
455 | |
456 #ifdef CC_INTERP | |
457 address continuation = (address)(intptr_t) handler_bci; | |
458 #else | |
459 address continuation = NULL; | |
460 #endif | |
461 address handler_pc = NULL; | |
462 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { | |
463 // Forward exception to callee (leaving bci/bcp untouched) because (a) no | |
464 // handler in this method, or (b) after a stack overflow there is not yet | |
465 // enough stack space available to reprotect the stack. | |
466 #ifndef CC_INTERP | |
467 continuation = Interpreter::remove_activation_entry(); | |
468 #endif | |
469 // Count this for compilation purposes | |
470 h_method->interpreter_throwout_increment(); | |
471 } else { | |
472 // handler in this method => change bci/bcp to handler bci/bcp and continue there | |
473 handler_pc = h_method->code_base() + handler_bci; | |
474 #ifndef CC_INTERP | |
475 set_bcp_and_mdp(handler_pc, thread); | |
476 continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; | |
477 #endif | |
478 } | |
479 // notify debugger of an exception catch | |
480 // (this is good for exceptions caught in native methods as well) | |
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481 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 482 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
483 } | |
484 | |
485 thread->set_vm_result(h_exception()); | |
486 return continuation; | |
487 IRT_END | |
488 | |
489 | |
490 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) | |
491 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); | |
492 // nothing to do - eventually we should remove this code entirely (see comments @ call sites) | |
493 IRT_END | |
494 | |
495 | |
496 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
497 THROW(vmSymbols::java_lang_AbstractMethodError()); | |
498 IRT_END | |
499 | |
500 | |
501 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) | |
502 THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); | |
503 IRT_END | |
504 | |
505 | |
506 //------------------------------------------------------------------------------------------------------------------------ | |
507 // Fields | |
508 // | |
509 | |
510 IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode)) | |
511 // resolve field | |
512 FieldAccessInfo info; | |
513 constantPoolHandle pool(thread, method(thread)->constants()); | |
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514 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic); |
0 | 515 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
516 | |
517 { | |
518 JvmtiHideSingleStepping jhss(thread); | |
1565 | 519 LinkResolver::resolve_field(info, pool, get_index_u2_cpcache(thread, bytecode), |
0 | 520 bytecode, false, CHECK); |
521 } // end JvmtiHideSingleStepping | |
522 | |
523 // check if link resolution caused cpCache to be updated | |
524 if (already_resolved(thread)) return; | |
525 | |
526 // compute auxiliary field attributes | |
527 TosState state = as_TosState(info.field_type()); | |
528 | |
529 // We need to delay resolving put instructions on final fields | |
530 // until we actually invoke one. This is required so we throw | |
531 // exceptions at the correct place. If we do not resolve completely | |
532 // in the current pass, leaving the put_code set to zero will | |
533 // cause the next put instruction to reresolve. | |
534 Bytecodes::Code put_code = (Bytecodes::Code)0; | |
535 | |
536 // We also need to delay resolving getstatic instructions until the | |
537 // class is intitialized. This is required so that access to the static | |
538 // field will call the initialization function every time until the class | |
539 // is completely initialized ala. in 2.17.5 in JVM Specification. | |
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540 InstanceKlass *klass = InstanceKlass::cast(info.klass()()); |
0 | 541 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) && |
542 !klass->is_initialized()); | |
543 Bytecodes::Code get_code = (Bytecodes::Code)0; | |
544 | |
545 if (!uninitialized_static) { | |
546 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); | |
547 if (is_put || !info.access_flags().is_final()) { | |
548 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); | |
549 } | |
550 } | |
551 | |
552 cache_entry(thread)->set_field( | |
553 get_code, | |
554 put_code, | |
555 info.klass(), | |
556 info.field_index(), | |
557 info.field_offset(), | |
558 state, | |
559 info.access_flags().is_final(), | |
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560 info.access_flags().is_volatile(), |
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561 pool->pool_holder() |
0 | 562 ); |
563 IRT_END | |
564 | |
565 | |
566 //------------------------------------------------------------------------------------------------------------------------ | |
567 // Synchronization | |
568 // | |
569 // The interpreter's synchronization code is factored out so that it can | |
570 // be shared by method invocation and synchronized blocks. | |
571 //%note synchronization_3 | |
572 | |
573 static void trace_locking(Handle& h_locking_obj, bool is_locking) { | |
574 ObjectSynchronizer::trace_locking(h_locking_obj, false, true, is_locking); | |
575 } | |
576 | |
577 | |
578 //%note monitor_1 | |
579 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) | |
580 #ifdef ASSERT | |
581 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
582 #endif | |
583 if (PrintBiasedLockingStatistics) { | |
584 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
585 } | |
586 Handle h_obj(thread, elem->obj()); | |
587 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
588 "must be NULL or an object"); | |
589 if (UseBiasedLocking) { | |
590 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
591 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); | |
592 } else { | |
593 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); | |
594 } | |
595 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), | |
596 "must be NULL or an object"); | |
597 #ifdef ASSERT | |
598 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
599 #endif | |
600 IRT_END | |
601 | |
602 | |
603 //%note monitor_1 | |
604 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) | |
605 #ifdef ASSERT | |
606 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
607 #endif | |
608 Handle h_obj(thread, elem->obj()); | |
609 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
610 "must be NULL or an object"); | |
611 if (elem == NULL || h_obj()->is_unlocked()) { | |
612 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
613 } | |
614 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); | |
615 // Free entry. This must be done here, since a pending exception might be installed on | |
616 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. | |
617 elem->set_obj(NULL); | |
618 #ifdef ASSERT | |
619 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
620 #endif | |
621 IRT_END | |
622 | |
623 | |
624 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) | |
625 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
626 IRT_END | |
627 | |
628 | |
629 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) | |
630 // Returns an illegal exception to install into the current thread. The | |
631 // pending_exception flag is cleared so normal exception handling does not | |
632 // trigger. Any current installed exception will be overwritten. This | |
633 // method will be called during an exception unwind. | |
634 | |
635 assert(!HAS_PENDING_EXCEPTION, "no pending exception"); | |
636 Handle exception(thread, thread->vm_result()); | |
637 assert(exception() != NULL, "vm result should be set"); | |
638 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) | |
1142 | 639 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
0 | 640 exception = get_preinitialized_exception( |
641 SystemDictionary::IllegalMonitorStateException_klass(), | |
642 CATCH); | |
643 } | |
644 thread->set_vm_result(exception()); | |
645 IRT_END | |
646 | |
647 | |
648 //------------------------------------------------------------------------------------------------------------------------ | |
649 // Invokes | |
650 | |
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651 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) |
0 | 652 return method->orig_bytecode_at(method->bci_from(bcp)); |
653 IRT_END | |
654 | |
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655 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) |
0 | 656 method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
657 IRT_END | |
658 | |
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659 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) |
0 | 660 JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
661 IRT_END | |
662 | |
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663 IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) { |
0 | 664 // extract receiver from the outgoing argument list if necessary |
665 Handle receiver(thread, NULL); | |
666 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) { | |
667 ResourceMark rm(thread); | |
668 methodHandle m (thread, method(thread)); | |
2142 | 669 Bytecode_invoke call(m, bci(thread)); |
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670 Symbol* signature = call.signature(); |
0 | 671 receiver = Handle(thread, |
672 thread->last_frame().interpreter_callee_receiver(signature)); | |
673 assert(Universe::heap()->is_in_reserved_or_null(receiver()), | |
674 "sanity check"); | |
675 assert(receiver.is_null() || | |
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676 !Universe::heap()->is_in_reserved(receiver->klass()), |
0 | 677 "sanity check"); |
678 } | |
679 | |
680 // resolve method | |
681 CallInfo info; | |
682 constantPoolHandle pool(thread, method(thread)->constants()); | |
683 | |
684 { | |
685 JvmtiHideSingleStepping jhss(thread); | |
686 LinkResolver::resolve_invoke(info, receiver, pool, | |
1565 | 687 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
0 | 688 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
689 int retry_count = 0; | |
690 while (info.resolved_method()->is_old()) { | |
691 // It is very unlikely that method is redefined more than 100 times | |
692 // in the middle of resolve. If it is looping here more than 100 times | |
693 // means then there could be a bug here. | |
694 guarantee((retry_count++ < 100), | |
695 "Could not resolve to latest version of redefined method"); | |
696 // method is redefined in the middle of resolve so re-try. | |
697 LinkResolver::resolve_invoke(info, receiver, pool, | |
1565 | 698 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
0 | 699 } |
700 } | |
701 } // end JvmtiHideSingleStepping | |
702 | |
703 // check if link resolution caused cpCache to be updated | |
704 if (already_resolved(thread)) return; | |
705 | |
706 if (bytecode == Bytecodes::_invokeinterface) { | |
707 | |
708 if (TraceItables && Verbose) { | |
709 ResourceMark rm(thread); | |
710 tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string()); | |
711 } | |
712 if (info.resolved_method()->method_holder() == | |
1142 | 713 SystemDictionary::Object_klass()) { |
0 | 714 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
715 // (see also cpCacheOop.cpp for details) | |
716 methodHandle rm = info.resolved_method(); | |
717 assert(rm->is_final() || info.has_vtable_index(), | |
718 "should have been set already"); | |
719 cache_entry(thread)->set_method(bytecode, rm, info.vtable_index()); | |
720 } else { | |
721 // Setup itable entry | |
722 int index = klassItable::compute_itable_index(info.resolved_method()()); | |
723 cache_entry(thread)->set_interface_call(info.resolved_method(), index); | |
724 } | |
725 } else { | |
726 cache_entry(thread)->set_method( | |
727 bytecode, | |
728 info.resolved_method(), | |
729 info.vtable_index()); | |
730 } | |
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731 } |
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732 IRT_END |
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733 |
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734 |
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735 // First time execution: Resolve symbols, create a permanent MethodType object. |
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736 IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) { |
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737 assert(EnableInvokeDynamic, ""); |
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738 const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
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739 |
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740 // resolve method |
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741 CallInfo info; |
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742 constantPoolHandle pool(thread, method(thread)->constants()); |
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743 |
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744 { |
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745 JvmtiHideSingleStepping jhss(thread); |
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746 LinkResolver::resolve_invoke(info, Handle(), pool, |
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747 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
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748 } // end JvmtiHideSingleStepping |
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749 |
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750 cache_entry(thread)->set_method_handle(pool, info); |
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751 } |
0 | 752 IRT_END |
753 | |
754 | |
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755 // First time execution: Resolve symbols, create a permanent CallSite object. |
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756 IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) { |
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757 assert(EnableInvokeDynamic, ""); |
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758 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
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759 |
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760 //TO DO: consider passing BCI to Java. |
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761 // int caller_bci = method(thread)->bci_from(bcp(thread)); |
726
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762 |
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763 // resolve method |
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764 CallInfo info; |
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765 constantPoolHandle pool(thread, method(thread)->constants()); |
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766 int index = get_index_u4(thread, bytecode); |
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767 { |
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768 JvmtiHideSingleStepping jhss(thread); |
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769 LinkResolver::resolve_invoke(info, Handle(), pool, |
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770 index, bytecode, CHECK); |
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771 } // end JvmtiHideSingleStepping |
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772 |
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773 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); |
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774 cp_cache_entry->set_dynamic_call(pool, info); |
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775 } |
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776 IRT_END |
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777 |
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778 |
0 | 779 //------------------------------------------------------------------------------------------------------------------------ |
780 // Miscellaneous | |
781 | |
782 | |
941 | 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(); | |
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793 Method* method = fr.interpreter_frame_method(); |
941 | 794 int bci = method->bci_from(fr.interpreter_frame_bcp()); |
1783 | 795 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
941 | 796 } |
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797 #ifndef PRODUCT |
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798 if (TraceOnStackReplacement) { |
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799 if (nm != NULL) { |
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800 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry()); |
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801 nm->print(); |
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802 } |
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803 } |
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804 #endif |
941 | 805 return nm; |
806 } | |
807 | |
0 | 808 IRT_ENTRY(nmethod*, |
941 | 809 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
0 | 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()); | |
1783 | 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; | |
819 | |
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820 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
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821 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
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822 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
0 | 823 |
1783 | 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())); | |
839 } | |
0 | 840 } |
1783 | 841 BiasedLocking::revoke(objects_to_revoke); |
0 | 842 } |
843 } | |
1783 | 844 return osr_nm; |
0 | 845 IRT_END |
846 | |
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847 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) |
0 | 848 assert(ProfileInterpreter, "must be profiling interpreter"); |
849 int bci = method->bci_from(cur_bcp); | |
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850 MethodData* mdo = method->method_data(); |
0 | 851 if (mdo == NULL) return 0; |
852 return mdo->bci_to_di(bci); | |
853 IRT_END | |
854 | |
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855 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
0 | 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()); | |
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864 Method::build_interpreter_method_data(method, THREAD); |
0 | 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 } | |
870 IRT_END | |
871 | |
872 | |
873 #ifdef ASSERT | |
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874 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) |
0 | 875 assert(ProfileInterpreter, "must be profiling interpreter"); |
876 | |
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877 MethodData* mdo = method->method_data(); |
0 | 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"); | |
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910 MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); |
0 | 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 | |
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946 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); |
0 | 947 int index = cp_entry->field_index(); |
3938 | 948 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
0 | 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 } | |
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969 instanceKlassHandle h_cp_entry_f1(thread, (Klass*)cp_entry->f1_as_klass()); |
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970 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static); |
0 | 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 | |
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977 Klass* k = (Klass*)cp_entry->f1_as_klass(); |
0 | 978 |
979 // check the access_flags for the field in the klass | |
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980 InstanceKlass* ik = InstanceKlass::cast(k); |
0 | 981 int index = cp_entry->field_index(); |
982 // bail out if field modifications are not watched | |
3938 | 983 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
0 | 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); | |
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1002 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static); |
0 | 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]; | |
1506 | 1016 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
0 | 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 } | |
1748 | 1053 address handler = handler_blob->code_begin(); |
0 | 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); | |
1748 | 1069 _buffer = bb->code_begin(); |
0 | 1070 |
6197 | 1071 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
1072 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); | |
0 | 1073 } |
1074 | |
1075 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { | |
1076 address handler = _handler; | |
1748 | 1077 int insts_size = buffer->pure_insts_size(); |
1078 if (handler + insts_size > _handler_blob->code_end()) { | |
0 | 1079 // get a new handler blob |
1080 handler = set_handler_blob(); | |
1081 } | |
1082 if (handler != NULL) { | |
1748 | 1083 memcpy(handler, buffer->insts_begin(), insts_size); |
0 | 1084 pd_set_handler(handler); |
1748 | 1085 ICache::invalidate_range(handler, insts_size); |
1086 _handler = handler + insts_size; | |
0 | 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, | |
1748 | 1125 buffer.insts_size()); |
1126 Disassembler::decode(handler, handler + buffer.insts_size()); | |
0 | 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 } | |
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1145 // Set handler under SignatureHandlerLibrary_lock |
0 | 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 } | |
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1153 } else { |
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1154 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
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1155 // use generic signature handler |
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1156 method->set_signature_handler(Interpreter::slow_signature_handler()); |
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1157 } |
0 | 1158 } |
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1159 #ifdef ASSERT |
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1160 int handler_index = -1; |
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1161 int fingerprint_index = -2; |
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1162 { |
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1163 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
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1164 // in any way if accessed from multiple threads. To avoid races with another |
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1165 // thread which may change the arrays in the above, mutex protected block, we |
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1166 // have to protect this read access here with the same mutex as well! |
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1167 MutexLocker mu(SignatureHandlerLibrary_lock); |
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1168 if (_handlers != NULL) { |
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1169 handler_index = _handlers->find(method->signature_handler()); |
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1170 fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint()); |
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1171 } |
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1172 } |
0 | 1173 assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
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1174 handler_index == fingerprint_index, "sanity check"); |
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1175 #endif // ASSERT |
0 | 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 | |
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1186 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) |
0 | 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 | |
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1202 #if defined(IA32) || defined(AMD64) || defined(ARM) |
0 | 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()); | |
2142 | 1214 Bytecode_invoke invoke(mh, bci); |
1215 ArgumentSizeComputer asc(invoke.signature()); | |
1216 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver | |
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1217 Copy::conjoint_jbytes(src_address, dest_address, |
1506 | 1218 size_of_arguments * Interpreter::stackElementSize); |
0 | 1219 IRT_END |
1220 #endif |