Mercurial > hg > graal-jvmci-8
annotate src/share/vm/c1/c1_Runtime1.cpp @ 6521:2a0c9f20baa1
consolidated framework for runtime and stub calls and moved declaration of descriptors for such calls to the source file in which they are used
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 05 Oct 2012 17:55:12 +0200 |
parents | e722fa145b37 |
children | fd71ca8c5f88 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 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 "asm/codeBuffer.hpp" | |
27 #include "c1/c1_CodeStubs.hpp" | |
28 #include "c1/c1_Defs.hpp" | |
29 #include "c1/c1_FrameMap.hpp" | |
30 #include "c1/c1_LIRAssembler.hpp" | |
31 #include "c1/c1_MacroAssembler.hpp" | |
32 #include "c1/c1_Runtime1.hpp" | |
33 #include "classfile/systemDictionary.hpp" | |
34 #include "classfile/vmSymbols.hpp" | |
35 #include "code/codeBlob.hpp" | |
36 #include "code/compiledIC.hpp" | |
37 #include "code/pcDesc.hpp" | |
38 #include "code/scopeDesc.hpp" | |
39 #include "code/vtableStubs.hpp" | |
40 #include "compiler/disassembler.hpp" | |
41 #include "gc_interface/collectedHeap.hpp" | |
42 #include "interpreter/bytecode.hpp" | |
43 #include "interpreter/interpreter.hpp" | |
44 #include "memory/allocation.inline.hpp" | |
45 #include "memory/barrierSet.hpp" | |
46 #include "memory/oopFactory.hpp" | |
47 #include "memory/resourceArea.hpp" | |
48 #include "oops/objArrayKlass.hpp" | |
49 #include "oops/oop.inline.hpp" | |
50 #include "runtime/biasedLocking.hpp" | |
51 #include "runtime/compilationPolicy.hpp" | |
52 #include "runtime/interfaceSupport.hpp" | |
53 #include "runtime/javaCalls.hpp" | |
54 #include "runtime/sharedRuntime.hpp" | |
55 #include "runtime/threadCritical.hpp" | |
56 #include "runtime/vframe.hpp" | |
57 #include "runtime/vframeArray.hpp" | |
58 #include "utilities/copy.hpp" | |
59 #include "utilities/events.hpp" | |
0 | 60 |
61 | |
62 // Implementation of StubAssembler | |
63 | |
64 StubAssembler::StubAssembler(CodeBuffer* code, const char * name, int stub_id) : C1_MacroAssembler(code) { | |
65 _name = name; | |
66 _must_gc_arguments = false; | |
67 _frame_size = no_frame_size; | |
68 _num_rt_args = 0; | |
69 _stub_id = stub_id; | |
70 } | |
71 | |
72 | |
73 void StubAssembler::set_info(const char* name, bool must_gc_arguments) { | |
74 _name = name; | |
75 _must_gc_arguments = must_gc_arguments; | |
76 } | |
77 | |
78 | |
79 void StubAssembler::set_frame_size(int size) { | |
80 if (_frame_size == no_frame_size) { | |
81 _frame_size = size; | |
82 } | |
83 assert(_frame_size == size, "can't change the frame size"); | |
84 } | |
85 | |
86 | |
87 void StubAssembler::set_num_rt_args(int args) { | |
88 if (_num_rt_args == 0) { | |
89 _num_rt_args = args; | |
90 } | |
91 assert(_num_rt_args == args, "can't change the number of args"); | |
92 } | |
93 | |
94 // Implementation of Runtime1 | |
95 | |
96 CodeBlob* Runtime1::_blobs[Runtime1::number_of_ids]; | |
97 const char *Runtime1::_blob_names[] = { | |
98 RUNTIME1_STUBS(STUB_NAME, LAST_STUB_NAME) | |
99 }; | |
100 | |
101 #ifndef PRODUCT | |
102 // statistics | |
103 int Runtime1::_generic_arraycopy_cnt = 0; | |
104 int Runtime1::_primitive_arraycopy_cnt = 0; | |
105 int Runtime1::_oop_arraycopy_cnt = 0; | |
2446 | 106 int Runtime1::_generic_arraycopystub_cnt = 0; |
0 | 107 int Runtime1::_arraycopy_slowcase_cnt = 0; |
2446 | 108 int Runtime1::_arraycopy_checkcast_cnt = 0; |
109 int Runtime1::_arraycopy_checkcast_attempt_cnt = 0; | |
0 | 110 int Runtime1::_new_type_array_slowcase_cnt = 0; |
111 int Runtime1::_new_object_array_slowcase_cnt = 0; | |
112 int Runtime1::_new_instance_slowcase_cnt = 0; | |
113 int Runtime1::_new_multi_array_slowcase_cnt = 0; | |
114 int Runtime1::_monitorenter_slowcase_cnt = 0; | |
115 int Runtime1::_monitorexit_slowcase_cnt = 0; | |
116 int Runtime1::_patch_code_slowcase_cnt = 0; | |
117 int Runtime1::_throw_range_check_exception_count = 0; | |
118 int Runtime1::_throw_index_exception_count = 0; | |
119 int Runtime1::_throw_div0_exception_count = 0; | |
120 int Runtime1::_throw_null_pointer_exception_count = 0; | |
121 int Runtime1::_throw_class_cast_exception_count = 0; | |
122 int Runtime1::_throw_incompatible_class_change_error_count = 0; | |
123 int Runtime1::_throw_array_store_exception_count = 0; | |
124 int Runtime1::_throw_count = 0; | |
2446 | 125 |
126 static int _byte_arraycopy_cnt = 0; | |
127 static int _short_arraycopy_cnt = 0; | |
128 static int _int_arraycopy_cnt = 0; | |
129 static int _long_arraycopy_cnt = 0; | |
130 static int _oop_arraycopy_cnt = 0; | |
131 | |
132 address Runtime1::arraycopy_count_address(BasicType type) { | |
133 switch (type) { | |
134 case T_BOOLEAN: | |
135 case T_BYTE: return (address)&_byte_arraycopy_cnt; | |
136 case T_CHAR: | |
137 case T_SHORT: return (address)&_short_arraycopy_cnt; | |
138 case T_FLOAT: | |
139 case T_INT: return (address)&_int_arraycopy_cnt; | |
140 case T_DOUBLE: | |
141 case T_LONG: return (address)&_long_arraycopy_cnt; | |
142 case T_ARRAY: | |
143 case T_OBJECT: return (address)&_oop_arraycopy_cnt; | |
144 default: | |
145 ShouldNotReachHere(); | |
146 return NULL; | |
147 } | |
148 } | |
149 | |
150 | |
0 | 151 #endif |
152 | |
153 // Simple helper to see if the caller of a runtime stub which | |
154 // entered the VM has been deoptimized | |
155 | |
156 static bool caller_is_deopted() { | |
157 JavaThread* thread = JavaThread::current(); | |
158 RegisterMap reg_map(thread, false); | |
159 frame runtime_frame = thread->last_frame(); | |
160 frame caller_frame = runtime_frame.sender(®_map); | |
161 assert(caller_frame.is_compiled_frame(), "must be compiled"); | |
162 return caller_frame.is_deoptimized_frame(); | |
163 } | |
164 | |
165 // Stress deoptimization | |
166 static void deopt_caller() { | |
167 if ( !caller_is_deopted()) { | |
168 JavaThread* thread = JavaThread::current(); | |
169 RegisterMap reg_map(thread, false); | |
170 frame runtime_frame = thread->last_frame(); | |
171 frame caller_frame = runtime_frame.sender(®_map); | |
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172 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); |
0 | 173 assert(caller_is_deopted(), "Must be deoptimized"); |
174 } | |
175 } | |
176 | |
177 | |
1584 | 178 void Runtime1::generate_blob_for(BufferBlob* buffer_blob, StubID id) { |
0 | 179 assert(0 <= id && id < number_of_ids, "illegal stub id"); |
180 ResourceMark rm; | |
181 // create code buffer for code storage | |
1748 | 182 CodeBuffer code(buffer_blob); |
0 | 183 |
1584 | 184 Compilation::setup_code_buffer(&code, 0); |
0 | 185 |
186 // create assembler for code generation | |
187 StubAssembler* sasm = new StubAssembler(&code, name_for(id), id); | |
188 // generate code for runtime stub | |
189 OopMapSet* oop_maps; | |
190 oop_maps = generate_code_for(id, sasm); | |
191 assert(oop_maps == NULL || sasm->frame_size() != no_frame_size, | |
192 "if stub has an oop map it must have a valid frame size"); | |
193 | |
194 #ifdef ASSERT | |
195 // Make sure that stubs that need oopmaps have them | |
196 switch (id) { | |
197 // These stubs don't need to have an oopmap | |
198 case dtrace_object_alloc_id: | |
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199 case g1_pre_barrier_slow_id: |
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200 case g1_post_barrier_slow_id: |
0 | 201 case slow_subtype_check_id: |
202 case fpu2long_stub_id: | |
203 case unwind_exception_id: | |
1783 | 204 case counter_overflow_id: |
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205 #if defined(SPARC) || defined(PPC) |
0 | 206 case handle_exception_nofpu_id: // Unused on sparc |
207 #endif | |
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208 #ifdef GRAAL |
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209 case graal_verify_oop_id: |
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210 case graal_unwind_exception_call_id: |
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211 case graal_arithmetic_frem_id: |
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212 case graal_arithmetic_drem_id: |
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213 case graal_set_deopt_info_id: |
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214 #endif |
0 | 215 break; |
216 | |
217 // All other stubs should have oopmaps | |
218 default: | |
219 assert(oop_maps != NULL, "must have an oopmap"); | |
220 } | |
221 #endif | |
222 | |
223 // align so printing shows nop's instead of random code at the end (SimpleStubs are aligned) | |
224 sasm->align(BytesPerWord); | |
225 // make sure all code is in code buffer | |
226 sasm->flush(); | |
227 // create blob - distinguish a few special cases | |
228 CodeBlob* blob = RuntimeStub::new_runtime_stub(name_for(id), | |
229 &code, | |
230 CodeOffsets::frame_never_safe, | |
231 sasm->frame_size(), | |
232 oop_maps, | |
233 sasm->must_gc_arguments()); | |
234 // install blob | |
235 assert(blob != NULL, "blob must exist"); | |
236 _blobs[id] = blob; | |
237 } | |
238 | |
239 | |
1584 | 240 void Runtime1::initialize(BufferBlob* blob) { |
241 // platform-dependent initialization | |
242 initialize_pd(); | |
243 // generate stubs | |
244 for (int id = 0; id < number_of_ids; id++) generate_blob_for(blob, (StubID)id); | |
245 // printing | |
0 | 246 #ifndef PRODUCT |
1584 | 247 if (PrintSimpleStubs) { |
248 ResourceMark rm; | |
249 for (int id = 0; id < number_of_ids; id++) { | |
250 _blobs[id]->print(); | |
251 if (_blobs[id]->oop_maps() != NULL) { | |
252 _blobs[id]->oop_maps()->print(); | |
0 | 253 } |
254 } | |
1584 | 255 } |
0 | 256 #endif |
257 } | |
258 | |
259 | |
260 CodeBlob* Runtime1::blob_for(StubID id) { | |
261 assert(0 <= id && id < number_of_ids, "illegal stub id"); | |
262 return _blobs[id]; | |
263 } | |
264 | |
265 | |
266 const char* Runtime1::name_for(StubID id) { | |
267 assert(0 <= id && id < number_of_ids, "illegal stub id"); | |
268 return _blob_names[id]; | |
269 } | |
270 | |
271 const char* Runtime1::name_for_address(address entry) { | |
272 for (int id = 0; id < number_of_ids; id++) { | |
273 if (entry == entry_for((StubID)id)) return name_for((StubID)id); | |
274 } | |
275 | |
276 #define FUNCTION_CASE(a, f) \ | |
277 if ((intptr_t)a == CAST_FROM_FN_PTR(intptr_t, f)) return #f | |
278 | |
279 FUNCTION_CASE(entry, os::javaTimeMillis); | |
280 FUNCTION_CASE(entry, os::javaTimeNanos); | |
281 FUNCTION_CASE(entry, SharedRuntime::OSR_migration_end); | |
282 FUNCTION_CASE(entry, SharedRuntime::d2f); | |
283 FUNCTION_CASE(entry, SharedRuntime::d2i); | |
284 FUNCTION_CASE(entry, SharedRuntime::d2l); | |
285 FUNCTION_CASE(entry, SharedRuntime::dcos); | |
286 FUNCTION_CASE(entry, SharedRuntime::dexp); | |
287 FUNCTION_CASE(entry, SharedRuntime::dlog); | |
288 FUNCTION_CASE(entry, SharedRuntime::dlog10); | |
289 FUNCTION_CASE(entry, SharedRuntime::dpow); | |
290 FUNCTION_CASE(entry, SharedRuntime::drem); | |
291 FUNCTION_CASE(entry, SharedRuntime::dsin); | |
292 FUNCTION_CASE(entry, SharedRuntime::dtan); | |
293 FUNCTION_CASE(entry, SharedRuntime::f2i); | |
294 FUNCTION_CASE(entry, SharedRuntime::f2l); | |
295 FUNCTION_CASE(entry, SharedRuntime::frem); | |
296 FUNCTION_CASE(entry, SharedRuntime::l2d); | |
297 FUNCTION_CASE(entry, SharedRuntime::l2f); | |
298 FUNCTION_CASE(entry, SharedRuntime::ldiv); | |
299 FUNCTION_CASE(entry, SharedRuntime::lmul); | |
300 FUNCTION_CASE(entry, SharedRuntime::lrem); | |
301 FUNCTION_CASE(entry, SharedRuntime::lrem); | |
302 FUNCTION_CASE(entry, SharedRuntime::dtrace_method_entry); | |
303 FUNCTION_CASE(entry, SharedRuntime::dtrace_method_exit); | |
6135 | 304 FUNCTION_CASE(entry, is_instance_of); |
0 | 305 FUNCTION_CASE(entry, trace_block_entry); |
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306 #ifdef TRACE_HAVE_INTRINSICS |
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307 FUNCTION_CASE(entry, TRACE_TIME_METHOD); |
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308 #endif |
0 | 309 |
310 #undef FUNCTION_CASE | |
311 | |
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312 // Soft float adds more runtime names. |
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313 return pd_name_for_address(entry); |
0 | 314 } |
315 | |
316 | |
317 JRT_ENTRY(void, Runtime1::new_instance(JavaThread* thread, klassOopDesc* klass)) | |
318 NOT_PRODUCT(_new_instance_slowcase_cnt++;) | |
319 | |
320 assert(oop(klass)->is_klass(), "not a class"); | |
321 instanceKlassHandle h(thread, klass); | |
322 h->check_valid_for_instantiation(true, CHECK); | |
323 // make sure klass is initialized | |
324 h->initialize(CHECK); | |
325 // allocate instance and return via TLS | |
326 oop obj = h->allocate_instance(CHECK); | |
327 thread->set_vm_result(obj); | |
328 JRT_END | |
329 | |
330 | |
331 JRT_ENTRY(void, Runtime1::new_type_array(JavaThread* thread, klassOopDesc* klass, jint length)) | |
332 NOT_PRODUCT(_new_type_array_slowcase_cnt++;) | |
333 // Note: no handle for klass needed since they are not used | |
334 // anymore after new_typeArray() and no GC can happen before. | |
335 // (This may have to change if this code changes!) | |
336 assert(oop(klass)->is_klass(), "not a class"); | |
337 BasicType elt_type = typeArrayKlass::cast(klass)->element_type(); | |
338 oop obj = oopFactory::new_typeArray(elt_type, length, CHECK); | |
339 thread->set_vm_result(obj); | |
340 // This is pretty rare but this runtime patch is stressful to deoptimization | |
341 // if we deoptimize here so force a deopt to stress the path. | |
342 if (DeoptimizeALot) { | |
343 deopt_caller(); | |
344 } | |
345 | |
346 JRT_END | |
347 | |
348 | |
349 JRT_ENTRY(void, Runtime1::new_object_array(JavaThread* thread, klassOopDesc* array_klass, jint length)) | |
350 NOT_PRODUCT(_new_object_array_slowcase_cnt++;) | |
351 | |
352 // Note: no handle for klass needed since they are not used | |
353 // anymore after new_objArray() and no GC can happen before. | |
354 // (This may have to change if this code changes!) | |
355 assert(oop(array_klass)->is_klass(), "not a class"); | |
356 klassOop elem_klass = objArrayKlass::cast(array_klass)->element_klass(); | |
357 objArrayOop obj = oopFactory::new_objArray(elem_klass, length, CHECK); | |
358 thread->set_vm_result(obj); | |
359 // This is pretty rare but this runtime patch is stressful to deoptimization | |
360 // if we deoptimize here so force a deopt to stress the path. | |
361 if (DeoptimizeALot) { | |
362 deopt_caller(); | |
363 } | |
364 JRT_END | |
365 | |
366 | |
367 JRT_ENTRY(void, Runtime1::new_multi_array(JavaThread* thread, klassOopDesc* klass, int rank, jint* dims)) | |
368 NOT_PRODUCT(_new_multi_array_slowcase_cnt++;) | |
369 | |
370 assert(oop(klass)->is_klass(), "not a class"); | |
371 assert(rank >= 1, "rank must be nonzero"); | |
372 oop obj = arrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK); | |
373 thread->set_vm_result(obj); | |
374 JRT_END | |
375 | |
376 | |
377 JRT_ENTRY(void, Runtime1::unimplemented_entry(JavaThread* thread, StubID id)) | |
378 tty->print_cr("Runtime1::entry_for(%d) returned unimplemented entry point", id); | |
379 JRT_END | |
380 | |
381 | |
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382 JRT_ENTRY(void, Runtime1::throw_array_store_exception(JavaThread* thread, oopDesc* obj)) |
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383 ResourceMark rm(thread); |
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384 const char* klass_name = Klass::cast(obj->klass())->external_name(); |
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385 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayStoreException(), klass_name); |
0 | 386 JRT_END |
387 | |
388 | |
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389 // counter_overflow() is called from within C1-compiled methods. The enclosing method is the method |
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390 // associated with the top activation record. The inlinee (that is possibly included in the enclosing |
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391 // method) method oop is passed as an argument. In order to do that it is embedded in the code as |
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392 // a constant. |
1783 | 393 static nmethod* counter_overflow_helper(JavaThread* THREAD, int branch_bci, methodOopDesc* m) { |
394 nmethod* osr_nm = NULL; | |
395 methodHandle method(THREAD, m); | |
396 | |
397 RegisterMap map(THREAD, false); | |
398 frame fr = THREAD->last_frame().sender(&map); | |
0 | 399 nmethod* nm = (nmethod*) fr.cb(); |
1783 | 400 assert(nm!= NULL && nm->is_nmethod(), "Sanity check"); |
401 methodHandle enclosing_method(THREAD, nm->method()); | |
402 | |
403 CompLevel level = (CompLevel)nm->comp_level(); | |
404 int bci = InvocationEntryBci; | |
405 if (branch_bci != InvocationEntryBci) { | |
406 // Compute desination bci | |
407 address pc = method()->code_base() + branch_bci; | |
2142 | 408 Bytecodes::Code branch = Bytecodes::code_at(method(), pc); |
1783 | 409 int offset = 0; |
410 switch (branch) { | |
411 case Bytecodes::_if_icmplt: case Bytecodes::_iflt: | |
412 case Bytecodes::_if_icmpgt: case Bytecodes::_ifgt: | |
413 case Bytecodes::_if_icmple: case Bytecodes::_ifle: | |
414 case Bytecodes::_if_icmpge: case Bytecodes::_ifge: | |
415 case Bytecodes::_if_icmpeq: case Bytecodes::_if_acmpeq: case Bytecodes::_ifeq: | |
416 case Bytecodes::_if_icmpne: case Bytecodes::_if_acmpne: case Bytecodes::_ifne: | |
417 case Bytecodes::_ifnull: case Bytecodes::_ifnonnull: case Bytecodes::_goto: | |
418 offset = (int16_t)Bytes::get_Java_u2(pc + 1); | |
419 break; | |
420 case Bytecodes::_goto_w: | |
421 offset = Bytes::get_Java_u4(pc + 1); | |
422 break; | |
423 default: ; | |
0 | 424 } |
1783 | 425 bci = branch_bci + offset; |
426 } | |
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427 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
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428 osr_nm = CompilationPolicy::policy()->event(enclosing_method, method, branch_bci, bci, level, nm, THREAD); |
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429 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
1783 | 430 return osr_nm; |
431 } | |
432 | |
433 JRT_BLOCK_ENTRY(address, Runtime1::counter_overflow(JavaThread* thread, int bci, methodOopDesc* method)) | |
434 nmethod* osr_nm; | |
435 JRT_BLOCK | |
436 osr_nm = counter_overflow_helper(thread, bci, method); | |
437 if (osr_nm != NULL) { | |
438 RegisterMap map(thread, false); | |
439 frame fr = thread->last_frame().sender(&map); | |
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440 Deoptimization::deoptimize_frame(thread, fr.id(), Deoptimization::Reason_constraint); |
0 | 441 } |
1783 | 442 JRT_BLOCK_END |
443 return NULL; | |
0 | 444 JRT_END |
445 | |
446 extern void vm_exit(int code); | |
447 | |
448 // Enter this method from compiled code handler below. This is where we transition | |
449 // to VM mode. This is done as a helper routine so that the method called directly | |
450 // from compiled code does not have to transition to VM. This allows the entry | |
451 // method to see if the nmethod that we have just looked up a handler for has | |
452 // been deoptimized while we were in the vm. This simplifies the assembly code | |
453 // cpu directories. | |
454 // | |
455 // We are entering here from exception stub (via the entry method below) | |
456 // If there is a compiled exception handler in this method, we will continue there; | |
457 // otherwise we will unwind the stack and continue at the caller of top frame method | |
458 // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to | |
459 // control the area where we can allow a safepoint. After we exit the safepoint area we can | |
460 // check to see if the handler we are going to return is now in a nmethod that has | |
461 // been deoptimized. If that is the case we return the deopt blob | |
462 // unpack_with_exception entry instead. This makes life for the exception blob easier | |
463 // because making that same check and diverting is painful from assembly language. | |
464 JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm)) | |
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465 // Reset method handle flag. |
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466 thread->set_is_method_handle_return(false); |
0 | 467 |
468 Handle exception(thread, ex); | |
469 nm = CodeCache::find_nmethod(pc); | |
470 assert(nm != NULL, "this is not an nmethod"); | |
471 // Adjust the pc as needed/ | |
472 if (nm->is_deopt_pc(pc)) { | |
473 RegisterMap map(thread, false); | |
474 frame exception_frame = thread->last_frame().sender(&map); | |
475 // if the frame isn't deopted then pc must not correspond to the caller of last_frame | |
476 assert(exception_frame.is_deoptimized_frame(), "must be deopted"); | |
477 pc = exception_frame.pc(); | |
478 } | |
479 #ifdef ASSERT | |
480 assert(exception.not_null(), "NULL exceptions should be handled by throw_exception"); | |
481 assert(exception->is_oop(), "just checking"); | |
482 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError | |
1142 | 483 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { |
0 | 484 if (ExitVMOnVerifyError) vm_exit(-1); |
485 ShouldNotReachHere(); | |
486 } | |
487 #endif | |
488 | |
489 // Check the stack guard pages and reenable them if necessary and there is | |
490 // enough space on the stack to do so. Use fast exceptions only if the guard | |
491 // pages are enabled. | |
492 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); | |
493 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); | |
494 | |
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495 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 496 // To ensure correct notification of exception catches and throws |
497 // we have to deoptimize here. If we attempted to notify the | |
498 // catches and throws during this exception lookup it's possible | |
499 // we could deoptimize on the way out of the VM and end back in | |
500 // the interpreter at the throw site. This would result in double | |
501 // notifications since the interpreter would also notify about | |
502 // these same catches and throws as it unwound the frame. | |
503 | |
504 RegisterMap reg_map(thread); | |
505 frame stub_frame = thread->last_frame(); | |
506 frame caller_frame = stub_frame.sender(®_map); | |
507 | |
508 // We don't really want to deoptimize the nmethod itself since we | |
509 // can actually continue in the exception handler ourselves but I | |
510 // don't see an easy way to have the desired effect. | |
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511 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); |
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512 assert(caller_is_deopted(), "Must be deoptimized"); |
0 | 513 |
514 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); | |
515 } | |
516 | |
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517 // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions |
0 | 518 if (guard_pages_enabled) { |
519 address fast_continuation = nm->handler_for_exception_and_pc(exception, pc); | |
520 if (fast_continuation != NULL) { | |
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521 // Set flag if return address is a method handle call site. |
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522 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); |
0 | 523 return fast_continuation; |
524 } | |
525 } | |
526 | |
527 // If the stack guard pages are enabled, check whether there is a handler in | |
528 // the current method. Otherwise (guard pages disabled), force an unwind and | |
529 // skip the exception cache update (i.e., just leave continuation==NULL). | |
530 address continuation = NULL; | |
531 if (guard_pages_enabled) { | |
532 | |
533 // New exception handling mechanism can support inlined methods | |
534 // with exception handlers since the mappings are from PC to PC | |
535 | |
536 // debugging support | |
537 // tracing | |
538 if (TraceExceptions) { | |
539 ttyLocker ttyl; | |
540 ResourceMark rm; | |
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541 int offset = pc - nm->code_begin(); |
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542 tty->print_cr("Exception <%s> (0x%x) thrown in compiled method <%s> at PC " PTR_FORMAT " [" PTR_FORMAT "+%d] for thread 0x%x", |
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543 exception->print_value_string(), (address)exception(), nm->method()->print_value_string(), pc, nm->code_begin(), offset, thread); |
0 | 544 } |
545 // for AbortVMOnException flag | |
546 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); | |
547 | |
548 // Clear out the exception oop and pc since looking up an | |
549 // exception handler can cause class loading, which might throw an | |
550 // exception and those fields are expected to be clear during | |
551 // normal bytecode execution. | |
552 thread->set_exception_oop(NULL); | |
553 thread->set_exception_pc(NULL); | |
554 | |
555 continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false); | |
556 // If an exception was thrown during exception dispatch, the exception oop may have changed | |
557 thread->set_exception_oop(exception()); | |
558 thread->set_exception_pc(pc); | |
559 | |
560 // the exception cache is used only by non-implicit exceptions | |
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561 if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) { |
0 | 562 nm->add_handler_for_exception_and_pc(exception, pc, continuation); |
563 } | |
564 } | |
565 | |
566 thread->set_vm_result(exception()); | |
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567 // Set flag if return address is a method handle call site. |
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568 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); |
0 | 569 |
570 if (TraceExceptions) { | |
571 ttyLocker ttyl; | |
572 ResourceMark rm; | |
573 tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT, | |
574 thread, continuation, pc); | |
575 } | |
576 | |
577 return continuation; | |
578 JRT_END | |
579 | |
580 // Enter this method from compiled code only if there is a Java exception handler | |
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581 // in the method handling the exception. |
0 | 582 // We are entering here from exception stub. We don't do a normal VM transition here. |
583 // We do it in a helper. This is so we can check to see if the nmethod we have just | |
584 // searched for an exception handler has been deoptimized in the meantime. | |
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585 address Runtime1::exception_handler_for_pc(JavaThread* thread) { |
0 | 586 oop exception = thread->exception_oop(); |
587 address pc = thread->exception_pc(); | |
588 // Still in Java mode | |
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589 DEBUG_ONLY(ResetNoHandleMark rnhm); |
0 | 590 nmethod* nm = NULL; |
591 address continuation = NULL; | |
592 { | |
593 // Enter VM mode by calling the helper | |
594 ResetNoHandleMark rnhm; | |
595 continuation = exception_handler_for_pc_helper(thread, exception, pc, nm); | |
596 } | |
597 // Back in JAVA, use no oops DON'T safepoint | |
598 | |
599 // Now check to see if the nmethod we were called from is now deoptimized. | |
600 // If so we must return to the deopt blob and deoptimize the nmethod | |
601 if (nm != NULL && caller_is_deopted()) { | |
602 continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); | |
603 } | |
604 | |
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605 assert(continuation != NULL, "no handler found"); |
0 | 606 return continuation; |
607 } | |
608 | |
609 | |
610 JRT_ENTRY(void, Runtime1::throw_range_check_exception(JavaThread* thread, int index)) | |
611 NOT_PRODUCT(_throw_range_check_exception_count++;) | |
612 char message[jintAsStringSize]; | |
613 sprintf(message, "%d", index); | |
614 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message); | |
615 JRT_END | |
616 | |
617 | |
618 JRT_ENTRY(void, Runtime1::throw_index_exception(JavaThread* thread, int index)) | |
619 NOT_PRODUCT(_throw_index_exception_count++;) | |
620 char message[16]; | |
621 sprintf(message, "%d", index); | |
622 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IndexOutOfBoundsException(), message); | |
623 JRT_END | |
624 | |
625 | |
626 JRT_ENTRY(void, Runtime1::throw_div0_exception(JavaThread* thread)) | |
627 NOT_PRODUCT(_throw_div0_exception_count++;) | |
628 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
629 JRT_END | |
630 | |
631 | |
632 JRT_ENTRY(void, Runtime1::throw_null_pointer_exception(JavaThread* thread)) | |
633 NOT_PRODUCT(_throw_null_pointer_exception_count++;) | |
634 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
635 JRT_END | |
636 | |
637 | |
638 JRT_ENTRY(void, Runtime1::throw_class_cast_exception(JavaThread* thread, oopDesc* object)) | |
639 NOT_PRODUCT(_throw_class_cast_exception_count++;) | |
640 ResourceMark rm(thread); | |
641 char* message = SharedRuntime::generate_class_cast_message( | |
642 thread, Klass::cast(object->klass())->external_name()); | |
643 SharedRuntime::throw_and_post_jvmti_exception( | |
644 thread, vmSymbols::java_lang_ClassCastException(), message); | |
645 JRT_END | |
646 | |
647 | |
648 JRT_ENTRY(void, Runtime1::throw_incompatible_class_change_error(JavaThread* thread)) | |
649 NOT_PRODUCT(_throw_incompatible_class_change_error_count++;) | |
650 ResourceMark rm(thread); | |
651 SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError()); | |
652 JRT_END | |
653 | |
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654 #ifdef GRAAL |
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655 |
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656 JRT_ENTRY(void, Runtime1::graal_create_null_exception(JavaThread* thread)) |
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657 thread->set_vm_result(Exceptions::new_exception(thread, vmSymbols::java_lang_NullPointerException(), NULL)()); |
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658 JRT_END |
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659 |
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660 JRT_ENTRY(void, Runtime1::graal_create_out_of_bounds_exception(JavaThread* thread, jint index)) |
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661 char message[jintAsStringSize]; |
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662 sprintf(message, "%d", index); |
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663 thread->set_vm_result(Exceptions::new_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message)()); |
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664 JRT_END |
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665 |
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666 JRT_ENTRY_NO_ASYNC(void, Runtime1::graal_monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) |
0 | 667 NOT_PRODUCT(_monitorenter_slowcase_cnt++;) |
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668 #ifdef ASSERT |
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669 if (TraceGraal >= 3) { |
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670 char type[1024]; |
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671 obj->klass()->klass_part()->name()->as_C_string(type, 1024); |
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672 markOop mark = obj->mark(); |
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673 tty->print_cr("entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, obj, type, mark, lock); |
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674 tty->flush(); |
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675 } |
0 | 676 if (PrintBiasedLockingStatistics) { |
677 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
678 } | |
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679 #endif |
0 | 680 Handle h_obj(thread, obj); |
681 assert(h_obj()->is_oop(), "must be NULL or an object"); | |
682 if (UseBiasedLocking) { | |
683 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
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684 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); |
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685 } else { |
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686 if (UseFastLocking) { |
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687 // When using fast locking, the compiled code has already tried the fast case |
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688 ObjectSynchronizer::slow_enter(h_obj, lock, THREAD); |
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689 } else { |
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690 ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD); |
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691 } |
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692 } |
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693 #ifdef ASSERT |
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694 if (TraceGraal >= 3) { |
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695 tty->print_cr("exiting locking"); |
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696 tty->print_cr(""); |
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changeset
|
697 tty->print_cr("done"); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
698 } |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
699 #endif |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
700 JRT_END |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
701 |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
702 |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
703 JRT_LEAF(void, Runtime1::graal_monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock)) |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
704 NOT_PRODUCT(_monitorexit_slowcase_cnt++;) |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
705 assert(thread == JavaThread::current(), "threads must correspond"); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
706 assert(thread->last_Java_sp(), "last_Java_sp must be set"); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
707 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
708 EXCEPTION_MARK; |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
709 |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
710 #ifdef DEBUG |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
711 if (!obj->is_oop()) { |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
712 ResetNoHandleMark rhm; |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
713 nmethod* method = thread->last_frame().cb()->as_nmethod_or_null(); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
714 if (method != NULL) { |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
715 tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), obj); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
716 } |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
717 thread->print_stack_on(tty); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
718 assert(false, "invalid lock object pointer dected"); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
719 } |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
720 #endif |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
721 |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
722 if (UseFastLocking) { |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
723 // When using fast locking, the compiled code has already tried the fast case |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
724 ObjectSynchronizer::slow_exit(obj, lock, THREAD); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
725 } else { |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
726 ObjectSynchronizer::fast_exit(obj, lock, THREAD); |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
727 } |
6385
077fd901d7c7
enhanced tracing of Graal monitor slow paths (i.e., stub calls)
Doug Simon <doug.simon@oracle.com>
parents:
6275
diff
changeset
|
728 #ifdef ASSERT |
6427
7d6f44854ee3
re-conditionalized tracing statement
Doug Simon <doug.simon@oracle.com>
parents:
6423
diff
changeset
|
729 if (TraceGraal >= 3) { |
6423
13a08f5bb120
improved tracing in graal_monitorenter and graal_monitorexit
Doug Simon <doug.simon@oracle.com>
parents:
6388
diff
changeset
|
730 char type[1024]; |
13a08f5bb120
improved tracing in graal_monitorenter and graal_monitorexit
Doug Simon <doug.simon@oracle.com>
parents:
6388
diff
changeset
|
731 obj->klass()->klass_part()->name()->as_C_string(type, 1024); |
13a08f5bb120
improved tracing in graal_monitorenter and graal_monitorexit
Doug Simon <doug.simon@oracle.com>
parents:
6388
diff
changeset
|
732 tty->print_cr("exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, obj, type, obj->mark(), lock); |
13a08f5bb120
improved tracing in graal_monitorenter and graal_monitorexit
Doug Simon <doug.simon@oracle.com>
parents:
6388
diff
changeset
|
733 tty->flush(); |
6385
077fd901d7c7
enhanced tracing of Graal monitor slow paths (i.e., stub calls)
Doug Simon <doug.simon@oracle.com>
parents:
6275
diff
changeset
|
734 } |
077fd901d7c7
enhanced tracing of Graal monitor slow paths (i.e., stub calls)
Doug Simon <doug.simon@oracle.com>
parents:
6275
diff
changeset
|
735 #endif |
3714
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
736 JRT_END |
b648304ba4ff
Change Graal monitor enter and exit from BasicObjectLock to BasicLock
Christian Wimmer <christian.wimmer@oracle.com>
parents:
3558
diff
changeset
|
737 |
6388
6b74f44c5059
added Log.printObject() and Log.printlnObject() for more detailed logging of objects
Doug Simon <doug.simon@oracle.com>
parents:
6385
diff
changeset
|
738 JRT_ENTRY(void, Runtime1::graal_log_object(JavaThread* thread, oop obj, jint flags)) |
6515
e722fa145b37
Fixed VS2010 warnings in HotSpot.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
6473
diff
changeset
|
739 bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING); |
e722fa145b37
Fixed VS2010 warnings in HotSpot.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
6473
diff
changeset
|
740 bool address = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS); |
e722fa145b37
Fixed VS2010 warnings in HotSpot.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
6473
diff
changeset
|
741 bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE); |
5580
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
742 if (!string) { |
6388
6b74f44c5059
added Log.printObject() and Log.printlnObject() for more detailed logging of objects
Doug Simon <doug.simon@oracle.com>
parents:
6385
diff
changeset
|
743 if (!address && obj->is_oop_or_null(true)) { |
6453
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
744 char buf[O_BUFLEN]; |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
745 tty->print("%s@%p", obj->klass()->klass_part()->name()->as_C_string(buf, O_BUFLEN), obj); |
6388
6b74f44c5059
added Log.printObject() and Log.printlnObject() for more detailed logging of objects
Doug Simon <doug.simon@oracle.com>
parents:
6385
diff
changeset
|
746 } else { |
6b74f44c5059
added Log.printObject() and Log.printlnObject() for more detailed logging of objects
Doug Simon <doug.simon@oracle.com>
parents:
6385
diff
changeset
|
747 tty->print("%p", obj); |
6b74f44c5059
added Log.printObject() and Log.printlnObject() for more detailed logging of objects
Doug Simon <doug.simon@oracle.com>
parents:
6385
diff
changeset
|
748 } |
5580
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
749 } else { |
6453
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
750 ResourceMark rm; |
5580
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
751 assert(obj != NULL && java_lang_String::is_instance(obj), "must be"); |
6453
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
752 char *buf = java_lang_String::as_utf8_string(obj); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
753 tty->print(buf); |
5580
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
754 } |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
755 if (newline) { |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
756 tty->cr(); |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
757 } |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
758 JRT_END |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
759 |
6453
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
760 JRT_ENTRY(void, Runtime1::graal_vm_error(JavaThread* thread, oop where, oop format, jlong value)) |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
761 ResourceMark rm; |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
762 assert(where == NULL || java_lang_String::is_instance(where), "must be"); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
763 const char *error_msg = where == NULL ? "<internal Graal error>" : java_lang_String::as_utf8_string(where); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
764 char *detail_msg = NULL; |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
765 if (format != NULL) { |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
766 const char* buf = java_lang_String::as_utf8_string(format); |
6515
e722fa145b37
Fixed VS2010 warnings in HotSpot.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
6473
diff
changeset
|
767 size_t detail_msg_length = strlen(buf) * 2; |
6453
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
768 detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
769 jio_snprintf(detail_msg, detail_msg_length, buf, value); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
770 } |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
771 report_vm_error(__FILE__, __LINE__, error_msg, detail_msg); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
772 JRT_END |
6446
c8759f9f9e3c
added Log.printf() for more flexibility in debugging snippets
Doug Simon <doug.simon@oracle.com>
parents:
6427
diff
changeset
|
773 |
6453
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
774 JRT_ENTRY(void, Runtime1::graal_log_printf(JavaThread* thread, oop format, jlong val)) |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
775 ResourceMark rm; |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
776 assert(format != NULL && java_lang_String::is_instance(format), "must be"); |
3bba61323b38
added VMErrorNode intrinsic to support handling fatal errors in snippets
Doug Simon <doug.simon@oracle.com>
parents:
6446
diff
changeset
|
777 char *buf = java_lang_String::as_utf8_string(format); |
6446
c8759f9f9e3c
added Log.printf() for more flexibility in debugging snippets
Doug Simon <doug.simon@oracle.com>
parents:
6427
diff
changeset
|
778 tty->print(buf, val); |
c8759f9f9e3c
added Log.printf() for more flexibility in debugging snippets
Doug Simon <doug.simon@oracle.com>
parents:
6427
diff
changeset
|
779 JRT_END |
c8759f9f9e3c
added Log.printf() for more flexibility in debugging snippets
Doug Simon <doug.simon@oracle.com>
parents:
6427
diff
changeset
|
780 |
5580
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
781 JRT_ENTRY(void, Runtime1::graal_log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline)) |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
782 union { |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
783 jlong l; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
784 jdouble d; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
785 jfloat f; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
786 } uu; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
787 uu.l = value; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
788 switch (typeChar) { |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
789 case 'z': tty->print(value == 0 ? "false" : "true"); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
790 case 'b': tty->print("%d", (jbyte) value); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
791 case 'c': tty->print("%c", (jchar) value); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
792 case 's': tty->print("%d", (jshort) value); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
793 case 'i': tty->print("%d", (jint) value); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
794 case 'f': tty->print("%f", uu.f); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
795 case 'j': tty->print(INT64_FORMAT, value); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
796 case 'd': tty->print("%lf", uu.d); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
797 default: assert(false, "unknown typeChar"); break; |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
798 } |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
799 if (newline) { |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
800 tty->cr(); |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
801 } |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
802 JRT_END |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
803 |
69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
Doug Simon <doug.simon@oracle.com>
parents:
5573
diff
changeset
|
804 #endif /* GRAAL */ |
4974
ab906cea36f7
First round of minimizing diff vs OpenJDK.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
4970
diff
changeset
|
805 |
0 | 806 |
807 JRT_ENTRY_NO_ASYNC(void, Runtime1::monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock)) | |
808 NOT_PRODUCT(_monitorenter_slowcase_cnt++;) | |
809 if (PrintBiasedLockingStatistics) { | |
810 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
811 } | |
812 Handle h_obj(thread, obj); | |
813 assert(h_obj()->is_oop(), "must be NULL or an object"); | |
814 if (UseBiasedLocking) { | |
815 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
816 ObjectSynchronizer::fast_enter(h_obj, lock->lock(), true, CHECK); | |
817 } else { | |
818 if (UseFastLocking) { | |
819 // When using fast locking, the compiled code has already tried the fast case | |
820 assert(obj == lock->obj(), "must match"); | |
821 ObjectSynchronizer::slow_enter(h_obj, lock->lock(), THREAD); | |
822 } else { | |
823 lock->set_obj(obj); | |
824 ObjectSynchronizer::fast_enter(h_obj, lock->lock(), false, THREAD); | |
825 } | |
826 } | |
827 JRT_END | |
828 | |
829 | |
830 JRT_LEAF(void, Runtime1::monitorexit(JavaThread* thread, BasicObjectLock* lock)) | |
831 NOT_PRODUCT(_monitorexit_slowcase_cnt++;) | |
832 assert(thread == JavaThread::current(), "threads must correspond"); | |
833 assert(thread->last_Java_sp(), "last_Java_sp must be set"); | |
834 // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown | |
835 EXCEPTION_MARK; | |
836 | |
837 oop obj = lock->obj(); | |
838 assert(obj->is_oop(), "must be NULL or an object"); | |
839 if (UseFastLocking) { | |
840 // When using fast locking, the compiled code has already tried the fast case | |
841 ObjectSynchronizer::slow_exit(obj, lock->lock(), THREAD); | |
842 } else { | |
843 ObjectSynchronizer::fast_exit(obj, lock->lock(), THREAD); | |
844 } | |
845 JRT_END | |
846 | |
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847 // Cf. OptoRuntime::deoptimize_caller_frame |
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848 JRT_ENTRY(void, Runtime1::deoptimize(JavaThread* thread)) |
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849 // Called from within the owner thread, so no need for safepoint |
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850 RegisterMap reg_map(thread, false); |
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851 frame stub_frame = thread->last_frame(); |
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852 assert(stub_frame.is_runtime_frame(), "sanity check"); |
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853 frame caller_frame = stub_frame.sender(®_map); |
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854 |
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855 // We are coming from a compiled method; check this is true. |
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856 assert(CodeCache::find_nmethod(caller_frame.pc()) != NULL, "sanity"); |
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857 |
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858 // Deoptimize the caller frame. |
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859 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); |
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860 |
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861 // Return to the now deoptimized frame. |
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862 JRT_END |
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863 |
0 | 864 |
865 static klassOop resolve_field_return_klass(methodHandle caller, int bci, TRAPS) { | |
2142 | 866 Bytecode_field field_access(caller, bci); |
0 | 867 // This can be static or non-static field access |
2142 | 868 Bytecodes::Code code = field_access.code(); |
0 | 869 |
870 // We must load class, initialize class and resolvethe field | |
871 FieldAccessInfo result; // initialize class if needed | |
872 constantPoolHandle constants(THREAD, caller->constants()); | |
2142 | 873 LinkResolver::resolve_field(result, constants, field_access.index(), Bytecodes::java_code(code), false, CHECK_NULL); |
0 | 874 return result.klass()(); |
875 } | |
876 | |
877 | |
878 // | |
879 // This routine patches sites where a class wasn't loaded or | |
880 // initialized at the time the code was generated. It handles | |
881 // references to classes, fields and forcing of initialization. Most | |
882 // of the cases are straightforward and involving simply forcing | |
883 // resolution of a class, rewriting the instruction stream with the | |
884 // needed constant and replacing the call in this function with the | |
885 // patched code. The case for static field is more complicated since | |
886 // the thread which is in the process of initializing a class can | |
887 // access it's static fields but other threads can't so the code | |
888 // either has to deoptimize when this case is detected or execute a | |
889 // check that the current thread is the initializing thread. The | |
890 // current | |
891 // | |
892 // Patches basically look like this: | |
893 // | |
894 // | |
895 // patch_site: jmp patch stub ;; will be patched | |
896 // continue: ... | |
897 // ... | |
898 // ... | |
899 // ... | |
900 // | |
901 // They have a stub which looks like this: | |
902 // | |
903 // ;; patch body | |
904 // movl <const>, reg (for class constants) | |
905 // <or> movl [reg1 + <const>], reg (for field offsets) | |
906 // <or> movl reg, [reg1 + <const>] (for field offsets) | |
907 // <being_init offset> <bytes to copy> <bytes to skip> | |
908 // patch_stub: call Runtime1::patch_code (through a runtime stub) | |
909 // jmp patch_site | |
910 // | |
911 // | |
912 // A normal patch is done by rewriting the patch body, usually a move, | |
913 // and then copying it into place over top of the jmp instruction | |
914 // being careful to flush caches and doing it in an MP-safe way. The | |
915 // constants following the patch body are used to find various pieces | |
916 // of the patch relative to the call site for Runtime1::patch_code. | |
917 // The case for getstatic and putstatic is more complicated because | |
918 // getstatic and putstatic have special semantics when executing while | |
919 // the class is being initialized. getstatic/putstatic on a class | |
920 // which is being_initialized may be executed by the initializing | |
921 // thread but other threads have to block when they execute it. This | |
922 // is accomplished in compiled code by executing a test of the current | |
923 // thread against the initializing thread of the class. It's emitted | |
924 // as boilerplate in their stub which allows the patched code to be | |
925 // executed before it's copied back into the main body of the nmethod. | |
926 // | |
927 // being_init: get_thread(<tmp reg> | |
928 // cmpl [reg1 + <init_thread_offset>], <tmp reg> | |
929 // jne patch_stub | |
930 // movl [reg1 + <const>], reg (for field offsets) <or> | |
931 // movl reg, [reg1 + <const>] (for field offsets) | |
932 // jmp continue | |
933 // <being_init offset> <bytes to copy> <bytes to skip> | |
934 // patch_stub: jmp Runtim1::patch_code (through a runtime stub) | |
935 // jmp patch_site | |
936 // | |
937 // If the class is being initialized the patch body is rewritten and | |
938 // the patch site is rewritten to jump to being_init, instead of | |
939 // patch_stub. Whenever this code is executed it checks the current | |
940 // thread against the intializing thread so other threads will enter | |
941 // the runtime and end up blocked waiting the class to finish | |
942 // initializing inside the calls to resolve_field below. The | |
943 // initializing class will continue on it's way. Once the class is | |
944 // fully_initialized, the intializing_thread of the class becomes | |
945 // NULL, so the next thread to execute this code will fail the test, | |
946 // call into patch_code and complete the patching process by copying | |
947 // the patch body back into the main part of the nmethod and resume | |
948 // executing. | |
949 // | |
950 // | |
951 | |
952 JRT_ENTRY(void, Runtime1::patch_code(JavaThread* thread, Runtime1::StubID stub_id )) | |
953 NOT_PRODUCT(_patch_code_slowcase_cnt++;) | |
954 | |
955 ResourceMark rm(thread); | |
956 RegisterMap reg_map(thread, false); | |
957 frame runtime_frame = thread->last_frame(); | |
958 frame caller_frame = runtime_frame.sender(®_map); | |
959 | |
960 // last java frame on stack | |
961 vframeStream vfst(thread, true); | |
962 assert(!vfst.at_end(), "Java frame must exist"); | |
963 | |
964 methodHandle caller_method(THREAD, vfst.method()); | |
965 // Note that caller_method->code() may not be same as caller_code because of OSR's | |
966 // Note also that in the presence of inlining it is not guaranteed | |
967 // that caller_method() == caller_code->method() | |
968 | |
969 int bci = vfst.bci(); | |
2142 | 970 Bytecodes::Code code = caller_method()->java_code_at(bci); |
0 | 971 |
972 #ifndef PRODUCT | |
973 // this is used by assertions in the access_field_patching_id | |
974 BasicType patch_field_type = T_ILLEGAL; | |
975 #endif // PRODUCT | |
976 bool deoptimize_for_volatile = false; | |
977 int patch_field_offset = -1; | |
978 KlassHandle init_klass(THREAD, klassOop(NULL)); // klass needed by access_field_patching code | |
979 Handle load_klass(THREAD, NULL); // oop needed by load_klass_patching code | |
980 if (stub_id == Runtime1::access_field_patching_id) { | |
981 | |
2142 | 982 Bytecode_field field_access(caller_method, bci); |
0 | 983 FieldAccessInfo result; // initialize class if needed |
2142 | 984 Bytecodes::Code code = field_access.code(); |
0 | 985 constantPoolHandle constants(THREAD, caller_method->constants()); |
2142 | 986 LinkResolver::resolve_field(result, constants, field_access.index(), Bytecodes::java_code(code), false, CHECK); |
0 | 987 patch_field_offset = result.field_offset(); |
988 | |
989 // If we're patching a field which is volatile then at compile it | |
990 // must not have been know to be volatile, so the generated code | |
991 // isn't correct for a volatile reference. The nmethod has to be | |
992 // deoptimized so that the code can be regenerated correctly. | |
993 // This check is only needed for access_field_patching since this | |
994 // is the path for patching field offsets. load_klass is only | |
995 // used for patching references to oops which don't need special | |
996 // handling in the volatile case. | |
997 deoptimize_for_volatile = result.access_flags().is_volatile(); | |
998 | |
999 #ifndef PRODUCT | |
1000 patch_field_type = result.field_type(); | |
1001 #endif | |
1002 } else if (stub_id == Runtime1::load_klass_patching_id) { | |
1003 oop k; | |
1004 switch (code) { | |
1005 case Bytecodes::_putstatic: | |
1006 case Bytecodes::_getstatic: | |
1007 { klassOop klass = resolve_field_return_klass(caller_method, bci, CHECK); | |
1008 // Save a reference to the class that has to be checked for initialization | |
1009 init_klass = KlassHandle(THREAD, klass); | |
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1010 k = klass->java_mirror(); |
0 | 1011 } |
1012 break; | |
1013 case Bytecodes::_new: | |
2142 | 1014 { Bytecode_new bnew(caller_method(), caller_method->bcp_from(bci)); |
1015 k = caller_method->constants()->klass_at(bnew.index(), CHECK); | |
0 | 1016 } |
1017 break; | |
1018 case Bytecodes::_multianewarray: | |
2142 | 1019 { Bytecode_multianewarray mna(caller_method(), caller_method->bcp_from(bci)); |
1020 k = caller_method->constants()->klass_at(mna.index(), CHECK); | |
0 | 1021 } |
1022 break; | |
1023 case Bytecodes::_instanceof: | |
2142 | 1024 { Bytecode_instanceof io(caller_method(), caller_method->bcp_from(bci)); |
1025 k = caller_method->constants()->klass_at(io.index(), CHECK); | |
0 | 1026 } |
1027 break; | |
1028 case Bytecodes::_checkcast: | |
2142 | 1029 { Bytecode_checkcast cc(caller_method(), caller_method->bcp_from(bci)); |
1030 k = caller_method->constants()->klass_at(cc.index(), CHECK); | |
0 | 1031 } |
1032 break; | |
1033 case Bytecodes::_anewarray: | |
2142 | 1034 { Bytecode_anewarray anew(caller_method(), caller_method->bcp_from(bci)); |
1035 klassOop ek = caller_method->constants()->klass_at(anew.index(), CHECK); | |
0 | 1036 k = Klass::cast(ek)->array_klass(CHECK); |
1037 } | |
1038 break; | |
1039 case Bytecodes::_ldc: | |
1040 case Bytecodes::_ldc_w: | |
1041 { | |
2142 | 1042 Bytecode_loadconstant cc(caller_method, bci); |
1043 k = cc.resolve_constant(CHECK); | |
1602 | 1044 assert(k != NULL && !k->is_klass(), "must be class mirror or other Java constant"); |
0 | 1045 } |
1046 break; | |
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1047 default: |
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1048 tty->print_cr("Unhandled bytecode: %d stub_id=%d caller=%s bci=%d pc=%d", code, stub_id, caller_method->name()->as_C_string(), bci, caller_frame.pc()); |
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1049 Unimplemented(); |
0 | 1050 } |
1051 // convert to handle | |
1052 load_klass = Handle(THREAD, k); | |
1053 } else { | |
1054 ShouldNotReachHere(); | |
1055 } | |
1056 | |
1057 if (deoptimize_for_volatile) { | |
1058 // At compile time we assumed the field wasn't volatile but after | |
1059 // loading it turns out it was volatile so we have to throw the | |
1060 // compiled code out and let it be regenerated. | |
1061 if (TracePatching) { | |
1062 tty->print_cr("Deoptimizing for patching volatile field reference"); | |
1063 } | |
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1064 // It's possible the nmethod was invalidated in the last |
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1065 // safepoint, but if it's still alive then make it not_entrant. |
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1066 nmethod* nm = CodeCache::find_nmethod(caller_frame.pc()); |
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1067 if (nm != NULL) { |
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1068 nm->make_not_entrant(); |
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1069 } |
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1070 |
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1071 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); |
0 | 1072 |
1073 // Return to the now deoptimized frame. | |
1074 } | |
1075 | |
1602 | 1076 // If we are patching in a non-perm oop, make sure the nmethod |
1077 // is on the right list. | |
1078 if (ScavengeRootsInCode && load_klass.not_null() && load_klass->is_scavengable()) { | |
1079 MutexLockerEx ml_code (CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
1080 nmethod* nm = CodeCache::find_nmethod(caller_frame.pc()); | |
1081 guarantee(nm != NULL, "only nmethods can contain non-perm oops"); | |
1082 if (!nm->on_scavenge_root_list()) | |
1083 CodeCache::add_scavenge_root_nmethod(nm); | |
1084 } | |
0 | 1085 |
1086 // Now copy code back | |
1087 | |
1088 { | |
1089 MutexLockerEx ml_patch (Patching_lock, Mutex::_no_safepoint_check_flag); | |
1090 // | |
1091 // Deoptimization may have happened while we waited for the lock. | |
1092 // In that case we don't bother to do any patching we just return | |
1093 // and let the deopt happen | |
1094 if (!caller_is_deopted()) { | |
1095 NativeGeneralJump* jump = nativeGeneralJump_at(caller_frame.pc()); | |
1096 address instr_pc = jump->jump_destination(); | |
1097 NativeInstruction* ni = nativeInstruction_at(instr_pc); | |
1098 if (ni->is_jump() ) { | |
1099 // the jump has not been patched yet | |
1100 // The jump destination is slow case and therefore not part of the stubs | |
1101 // (stubs are only for StaticCalls) | |
1102 | |
1103 // format of buffer | |
1104 // .... | |
1105 // instr byte 0 <-- copy_buff | |
1106 // instr byte 1 | |
1107 // .. | |
1108 // instr byte n-1 | |
1109 // n | |
1110 // .... <-- call destination | |
1111 | |
1112 address stub_location = caller_frame.pc() + PatchingStub::patch_info_offset(); | |
1113 unsigned char* byte_count = (unsigned char*) (stub_location - 1); | |
1114 unsigned char* byte_skip = (unsigned char*) (stub_location - 2); | |
1115 unsigned char* being_initialized_entry_offset = (unsigned char*) (stub_location - 3); | |
1116 address copy_buff = stub_location - *byte_skip - *byte_count; | |
1117 address being_initialized_entry = stub_location - *being_initialized_entry_offset; | |
1118 if (TracePatching) { | |
1119 tty->print_cr(" Patching %s at bci %d at address 0x%x (%s)", Bytecodes::name(code), bci, | |
1120 instr_pc, (stub_id == Runtime1::access_field_patching_id) ? "field" : "klass"); | |
1121 nmethod* caller_code = CodeCache::find_nmethod(caller_frame.pc()); | |
1122 assert(caller_code != NULL, "nmethod not found"); | |
1123 | |
1124 // NOTE we use pc() not original_pc() because we already know they are | |
1125 // identical otherwise we'd have never entered this block of code | |
1126 | |
1127 OopMap* map = caller_code->oop_map_for_return_address(caller_frame.pc()); | |
1128 assert(map != NULL, "null check"); | |
1129 map->print(); | |
1130 tty->cr(); | |
1131 | |
1132 Disassembler::decode(copy_buff, copy_buff + *byte_count, tty); | |
1133 } | |
1134 // depending on the code below, do_patch says whether to copy the patch body back into the nmethod | |
1135 bool do_patch = true; | |
1136 if (stub_id == Runtime1::access_field_patching_id) { | |
1137 // The offset may not be correct if the class was not loaded at code generation time. | |
1138 // Set it now. | |
1139 NativeMovRegMem* n_move = nativeMovRegMem_at(copy_buff); | |
1140 assert(n_move->offset() == 0 || (n_move->offset() == 4 && (patch_field_type == T_DOUBLE || patch_field_type == T_LONG)), "illegal offset for type"); | |
1141 assert(patch_field_offset >= 0, "illegal offset"); | |
1142 n_move->add_offset_in_bytes(patch_field_offset); | |
1143 } else if (stub_id == Runtime1::load_klass_patching_id) { | |
1144 // If a getstatic or putstatic is referencing a klass which | |
1145 // isn't fully initialized, the patch body isn't copied into | |
1146 // place until initialization is complete. In this case the | |
1147 // patch site is setup so that any threads besides the | |
1148 // initializing thread are forced to come into the VM and | |
1149 // block. | |
1150 do_patch = (code != Bytecodes::_getstatic && code != Bytecodes::_putstatic) || | |
1151 instanceKlass::cast(init_klass())->is_initialized(); | |
1152 NativeGeneralJump* jump = nativeGeneralJump_at(instr_pc); | |
1153 if (jump->jump_destination() == being_initialized_entry) { | |
1154 assert(do_patch == true, "initialization must be complete at this point"); | |
1155 } else { | |
1156 // patch the instruction <move reg, klass> | |
1157 NativeMovConstReg* n_copy = nativeMovConstReg_at(copy_buff); | |
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1159 assert(n_copy->data() == 0 || |
1783 | 1160 n_copy->data() == (intptr_t)Universe::non_oop_word(), |
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1161 "illegal init value"); |
0 | 1162 assert(load_klass() != NULL, "klass not set"); |
1163 n_copy->set_data((intx) (load_klass())); | |
1164 | |
1165 if (TracePatching) { | |
1166 Disassembler::decode(copy_buff, copy_buff + *byte_count, tty); | |
1167 } | |
1168 | |
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1169 #if defined(SPARC) || defined(PPC) |
0 | 1170 // Update the oop location in the nmethod with the proper |
1171 // oop. When the code was generated, a NULL was stuffed | |
1172 // in the oop table and that table needs to be update to | |
1173 // have the right value. On intel the value is kept | |
1174 // directly in the instruction instead of in the oop | |
1175 // table, so set_data above effectively updated the value. | |
1176 nmethod* nm = CodeCache::find_nmethod(instr_pc); | |
1177 assert(nm != NULL, "invalid nmethod_pc"); | |
1178 RelocIterator oops(nm, copy_buff, copy_buff + 1); | |
1179 bool found = false; | |
1180 while (oops.next() && !found) { | |
1181 if (oops.type() == relocInfo::oop_type) { | |
1182 oop_Relocation* r = oops.oop_reloc(); | |
1183 oop* oop_adr = r->oop_addr(); | |
1184 *oop_adr = load_klass(); | |
1185 r->fix_oop_relocation(); | |
1186 found = true; | |
1187 } | |
1188 } | |
1189 assert(found, "the oop must exist!"); | |
1190 #endif | |
1191 | |
1192 } | |
1193 } else { | |
1194 ShouldNotReachHere(); | |
1195 } | |
1196 if (do_patch) { | |
1197 // replace instructions | |
1198 // first replace the tail, then the call | |
1681
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1199 #ifdef ARM |
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1200 if(stub_id == Runtime1::load_klass_patching_id && !VM_Version::supports_movw()) { |
3269
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1201 nmethod* nm = CodeCache::find_nmethod(instr_pc); |
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1202 oop* oop_addr = NULL; |
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1203 assert(nm != NULL, "invalid nmethod_pc"); |
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1204 RelocIterator oops(nm, copy_buff, copy_buff + 1); |
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1205 while (oops.next()) { |
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1206 if (oops.type() == relocInfo::oop_type) { |
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1207 oop_Relocation* r = oops.oop_reloc(); |
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1208 oop_addr = r->oop_addr(); |
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1209 break; |
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1210 } |
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1211 } |
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1212 assert(oop_addr != NULL, "oop relocation must exist"); |
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1213 copy_buff -= *byte_count; |
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1214 NativeMovConstReg* n_copy2 = nativeMovConstReg_at(copy_buff); |
3269
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1215 n_copy2->set_pc_relative_offset((address)oop_addr, instr_pc); |
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1216 } |
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1217 #endif |
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1218 |
0 | 1219 for (int i = NativeCall::instruction_size; i < *byte_count; i++) { |
1220 address ptr = copy_buff + i; | |
1221 int a_byte = (*ptr) & 0xFF; | |
1222 address dst = instr_pc + i; | |
1223 *(unsigned char*)dst = (unsigned char) a_byte; | |
1224 } | |
1225 ICache::invalidate_range(instr_pc, *byte_count); | |
1226 NativeGeneralJump::replace_mt_safe(instr_pc, copy_buff); | |
1227 | |
1228 if (stub_id == Runtime1::load_klass_patching_id) { | |
1229 // update relocInfo to oop | |
1230 nmethod* nm = CodeCache::find_nmethod(instr_pc); | |
1231 assert(nm != NULL, "invalid nmethod_pc"); | |
1232 | |
1233 // The old patch site is now a move instruction so update | |
1234 // the reloc info so that it will get updated during | |
1235 // future GCs. | |
1236 RelocIterator iter(nm, (address)instr_pc, (address)(instr_pc + 1)); | |
1237 relocInfo::change_reloc_info_for_address(&iter, (address) instr_pc, | |
1238 relocInfo::none, relocInfo::oop_type); | |
1239 #ifdef SPARC | |
1240 // Sparc takes two relocations for an oop so update the second one. | |
1241 address instr_pc2 = instr_pc + NativeMovConstReg::add_offset; | |
1242 RelocIterator iter2(nm, instr_pc2, instr_pc2 + 1); | |
1243 relocInfo::change_reloc_info_for_address(&iter2, (address) instr_pc2, | |
1244 relocInfo::none, relocInfo::oop_type); | |
1245 #endif | |
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1246 #ifdef PPC |
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1247 { address instr_pc2 = instr_pc + NativeMovConstReg::lo_offset; |
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1248 RelocIterator iter2(nm, instr_pc2, instr_pc2 + 1); |
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1249 relocInfo::change_reloc_info_for_address(&iter2, (address) instr_pc2, relocInfo::none, relocInfo::oop_type); |
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1250 } |
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1251 #endif |
0 | 1252 } |
1253 | |
1254 } else { | |
1255 ICache::invalidate_range(copy_buff, *byte_count); | |
1256 NativeGeneralJump::insert_unconditional(instr_pc, being_initialized_entry); | |
1257 } | |
1258 } | |
1259 } | |
1260 } | |
1261 JRT_END | |
1262 | |
1263 // | |
1264 // Entry point for compiled code. We want to patch a nmethod. | |
1265 // We don't do a normal VM transition here because we want to | |
1266 // know after the patching is complete and any safepoint(s) are taken | |
1267 // if the calling nmethod was deoptimized. We do this by calling a | |
1268 // helper method which does the normal VM transition and when it | |
1269 // completes we can check for deoptimization. This simplifies the | |
1270 // assembly code in the cpu directories. | |
1271 // | |
1272 int Runtime1::move_klass_patching(JavaThread* thread) { | |
1273 // | |
1274 // NOTE: we are still in Java | |
1275 // | |
1276 Thread* THREAD = thread; | |
1277 debug_only(NoHandleMark nhm;) | |
1278 { | |
1279 // Enter VM mode | |
1280 | |
1281 ResetNoHandleMark rnhm; | |
1282 patch_code(thread, load_klass_patching_id); | |
1283 } | |
1284 // Back in JAVA, use no oops DON'T safepoint | |
1285 | |
1286 // Return true if calling code is deoptimized | |
1287 | |
1288 return caller_is_deopted(); | |
1289 } | |
1290 | |
1291 // | |
1292 // Entry point for compiled code. We want to patch a nmethod. | |
1293 // We don't do a normal VM transition here because we want to | |
1294 // know after the patching is complete and any safepoint(s) are taken | |
1295 // if the calling nmethod was deoptimized. We do this by calling a | |
1296 // helper method which does the normal VM transition and when it | |
1297 // completes we can check for deoptimization. This simplifies the | |
1298 // assembly code in the cpu directories. | |
1299 // | |
1300 | |
1301 int Runtime1::access_field_patching(JavaThread* thread) { | |
1302 // | |
1303 // NOTE: we are still in Java | |
1304 // | |
1305 Thread* THREAD = thread; | |
1306 debug_only(NoHandleMark nhm;) | |
1307 { | |
1308 // Enter VM mode | |
1309 | |
1310 ResetNoHandleMark rnhm; | |
1311 patch_code(thread, access_field_patching_id); | |
1312 } | |
1313 // Back in JAVA, use no oops DON'T safepoint | |
1314 | |
1315 // Return true if calling code is deoptimized | |
1316 | |
1317 return caller_is_deopted(); | |
1318 JRT_END | |
1319 | |
1320 | |
1321 JRT_LEAF(void, Runtime1::trace_block_entry(jint block_id)) | |
1322 // for now we just print out the block id | |
1323 tty->print("%d ", block_id); | |
1324 JRT_END | |
1325 | |
1326 | |
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1327 // Array copy return codes. |
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1328 enum { |
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1329 ac_failed = -1, // arraycopy failed |
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1330 ac_ok = 0 // arraycopy succeeded |
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1331 }; |
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1332 |
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1333 |
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1334 // Below length is the # elements copied. |
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1335 template <class T> int obj_arraycopy_work(oopDesc* src, T* src_addr, |
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1336 oopDesc* dst, T* dst_addr, |
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1337 int length) { |
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1338 |
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1339 // For performance reasons, we assume we are using a card marking write |
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1340 // barrier. The assert will fail if this is not the case. |
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1341 // Note that we use the non-virtual inlineable variant of write_ref_array. |
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1342 BarrierSet* bs = Universe::heap()->barrier_set(); |
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1343 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
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1344 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); |
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1345 if (src == dst) { |
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1346 // same object, no check |
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1347 bs->write_ref_array_pre(dst_addr, length); |
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1348 Copy::conjoint_oops_atomic(src_addr, dst_addr, length); |
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1349 bs->write_ref_array((HeapWord*)dst_addr, length); |
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1350 return ac_ok; |
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1351 } else { |
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1352 klassOop bound = objArrayKlass::cast(dst->klass())->element_klass(); |
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1353 klassOop stype = objArrayKlass::cast(src->klass())->element_klass(); |
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1354 if (stype == bound || Klass::cast(stype)->is_subtype_of(bound)) { |
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1355 // Elements are guaranteed to be subtypes, so no check necessary |
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1356 bs->write_ref_array_pre(dst_addr, length); |
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1357 Copy::conjoint_oops_atomic(src_addr, dst_addr, length); |
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1358 bs->write_ref_array((HeapWord*)dst_addr, length); |
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1359 return ac_ok; |
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1360 } |
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1361 } |
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1362 return ac_failed; |
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1363 } |
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1364 |
0 | 1365 // fast and direct copy of arrays; returning -1, means that an exception may be thrown |
1366 // and we did not copy anything | |
1367 JRT_LEAF(int, Runtime1::arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length)) | |
1368 #ifndef PRODUCT | |
1369 _generic_arraycopy_cnt++; // Slow-path oop array copy | |
1370 #endif | |
1371 | |
1372 if (src == NULL || dst == NULL || src_pos < 0 || dst_pos < 0 || length < 0) return ac_failed; | |
1373 if (!dst->is_array() || !src->is_array()) return ac_failed; | |
1374 if ((unsigned int) arrayOop(src)->length() < (unsigned int)src_pos + (unsigned int)length) return ac_failed; | |
1375 if ((unsigned int) arrayOop(dst)->length() < (unsigned int)dst_pos + (unsigned int)length) return ac_failed; | |
1376 | |
1377 if (length == 0) return ac_ok; | |
1378 if (src->is_typeArray()) { | |
1379 const klassOop klass_oop = src->klass(); | |
1380 if (klass_oop != dst->klass()) return ac_failed; | |
1381 typeArrayKlass* klass = typeArrayKlass::cast(klass_oop); | |
1382 const int l2es = klass->log2_element_size(); | |
1383 const int ihs = klass->array_header_in_bytes() / wordSize; | |
1384 char* src_addr = (char*) ((oopDesc**)src + ihs) + (src_pos << l2es); | |
1385 char* dst_addr = (char*) ((oopDesc**)dst + ihs) + (dst_pos << l2es); | |
1386 // Potential problem: memmove is not guaranteed to be word atomic | |
1387 // Revisit in Merlin | |
1388 memmove(dst_addr, src_addr, length << l2es); | |
1389 return ac_ok; | |
1390 } else if (src->is_objArray() && dst->is_objArray()) { | |
2002 | 1391 if (UseCompressedOops) { |
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1392 narrowOop *src_addr = objArrayOop(src)->obj_at_addr<narrowOop>(src_pos); |
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1393 narrowOop *dst_addr = objArrayOop(dst)->obj_at_addr<narrowOop>(dst_pos); |
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1394 return obj_arraycopy_work(src, src_addr, dst, dst_addr, length); |
0 | 1395 } else { |
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1396 oop *src_addr = objArrayOop(src)->obj_at_addr<oop>(src_pos); |
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1397 oop *dst_addr = objArrayOop(dst)->obj_at_addr<oop>(dst_pos); |
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1398 return obj_arraycopy_work(src, src_addr, dst, dst_addr, length); |
0 | 1399 } |
1400 } | |
1401 return ac_failed; | |
1402 JRT_END | |
1403 | |
1404 | |
1405 JRT_LEAF(void, Runtime1::primitive_arraycopy(HeapWord* src, HeapWord* dst, int length)) | |
1406 #ifndef PRODUCT | |
1407 _primitive_arraycopy_cnt++; | |
1408 #endif | |
1409 | |
1410 if (length == 0) return; | |
1411 // Not guaranteed to be word atomic, but that doesn't matter | |
1412 // for anything but an oop array, which is covered by oop_arraycopy. | |
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1413 Copy::conjoint_jbytes(src, dst, length); |
0 | 1414 JRT_END |
1415 | |
1416 JRT_LEAF(void, Runtime1::oop_arraycopy(HeapWord* src, HeapWord* dst, int num)) | |
1417 #ifndef PRODUCT | |
1418 _oop_arraycopy_cnt++; | |
1419 #endif | |
1420 | |
1421 if (num == 0) return; | |
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1422 BarrierSet* bs = Universe::heap()->barrier_set(); |
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1423 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); |
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1424 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); |
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1425 if (UseCompressedOops) { |
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1426 bs->write_ref_array_pre((narrowOop*)dst, num); |
2002 | 1427 Copy::conjoint_oops_atomic((narrowOop*) src, (narrowOop*) dst, num); |
1245
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1428 } else { |
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1429 bs->write_ref_array_pre((oop*)dst, num); |
2002 | 1430 Copy::conjoint_oops_atomic((oop*) src, (oop*) dst, num); |
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1431 } |
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1432 bs->write_ref_array(dst, num); |
0 | 1433 JRT_END |
1434 | |
1435 | |
6135 | 1436 JRT_LEAF(int, Runtime1::is_instance_of(oopDesc* mirror, oopDesc* obj)) |
1437 // had to return int instead of bool, otherwise there may be a mismatch | |
1438 // between the C calling convention and the Java one. | |
1439 // e.g., on x86, GCC may clear only %al when returning a bool false, but | |
1440 // JVM takes the whole %eax as the return value, which may misinterpret | |
1441 // the return value as a boolean true. | |
1442 | |
1443 assert(mirror != NULL, "should null-check on mirror before calling"); | |
1444 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1445 return (k != NULL && obj != NULL && obj->is_a(k)) ? 1 : 0; | |
1446 JRT_END | |
1447 | |
1448 | |
0 | 1449 #ifndef PRODUCT |
1450 void Runtime1::print_statistics() { | |
1451 tty->print_cr("C1 Runtime statistics:"); | |
1452 tty->print_cr(" _resolve_invoke_virtual_cnt: %d", SharedRuntime::_resolve_virtual_ctr); | |
1453 tty->print_cr(" _resolve_invoke_opt_virtual_cnt: %d", SharedRuntime::_resolve_opt_virtual_ctr); | |
1454 tty->print_cr(" _resolve_invoke_static_cnt: %d", SharedRuntime::_resolve_static_ctr); | |
1455 tty->print_cr(" _handle_wrong_method_cnt: %d", SharedRuntime::_wrong_method_ctr); | |
1456 tty->print_cr(" _ic_miss_cnt: %d", SharedRuntime::_ic_miss_ctr); | |
1457 tty->print_cr(" _generic_arraycopy_cnt: %d", _generic_arraycopy_cnt); | |
2446 | 1458 tty->print_cr(" _generic_arraycopystub_cnt: %d", _generic_arraycopystub_cnt); |
1459 tty->print_cr(" _byte_arraycopy_cnt: %d", _byte_arraycopy_cnt); | |
1460 tty->print_cr(" _short_arraycopy_cnt: %d", _short_arraycopy_cnt); | |
1461 tty->print_cr(" _int_arraycopy_cnt: %d", _int_arraycopy_cnt); | |
1462 tty->print_cr(" _long_arraycopy_cnt: %d", _long_arraycopy_cnt); | |
0 | 1463 tty->print_cr(" _primitive_arraycopy_cnt: %d", _primitive_arraycopy_cnt); |
2446 | 1464 tty->print_cr(" _oop_arraycopy_cnt (C): %d", Runtime1::_oop_arraycopy_cnt); |
1465 tty->print_cr(" _oop_arraycopy_cnt (stub): %d", _oop_arraycopy_cnt); | |
0 | 1466 tty->print_cr(" _arraycopy_slowcase_cnt: %d", _arraycopy_slowcase_cnt); |
2446 | 1467 tty->print_cr(" _arraycopy_checkcast_cnt: %d", _arraycopy_checkcast_cnt); |
1468 tty->print_cr(" _arraycopy_checkcast_attempt_cnt:%d", _arraycopy_checkcast_attempt_cnt); | |
0 | 1469 |
1470 tty->print_cr(" _new_type_array_slowcase_cnt: %d", _new_type_array_slowcase_cnt); | |
1471 tty->print_cr(" _new_object_array_slowcase_cnt: %d", _new_object_array_slowcase_cnt); | |
1472 tty->print_cr(" _new_instance_slowcase_cnt: %d", _new_instance_slowcase_cnt); | |
1473 tty->print_cr(" _new_multi_array_slowcase_cnt: %d", _new_multi_array_slowcase_cnt); | |
1474 tty->print_cr(" _monitorenter_slowcase_cnt: %d", _monitorenter_slowcase_cnt); | |
1475 tty->print_cr(" _monitorexit_slowcase_cnt: %d", _monitorexit_slowcase_cnt); | |
1476 tty->print_cr(" _patch_code_slowcase_cnt: %d", _patch_code_slowcase_cnt); | |
1477 | |
1478 tty->print_cr(" _throw_range_check_exception_count: %d:", _throw_range_check_exception_count); | |
1479 tty->print_cr(" _throw_index_exception_count: %d:", _throw_index_exception_count); | |
1480 tty->print_cr(" _throw_div0_exception_count: %d:", _throw_div0_exception_count); | |
1481 tty->print_cr(" _throw_null_pointer_exception_count: %d:", _throw_null_pointer_exception_count); | |
1482 tty->print_cr(" _throw_class_cast_exception_count: %d:", _throw_class_cast_exception_count); | |
1483 tty->print_cr(" _throw_incompatible_class_change_error_count: %d:", _throw_incompatible_class_change_error_count); | |
1484 tty->print_cr(" _throw_array_store_exception_count: %d:", _throw_array_store_exception_count); | |
1485 tty->print_cr(" _throw_count: %d:", _throw_count); | |
1486 | |
1487 SharedRuntime::print_ic_miss_histogram(); | |
1488 tty->cr(); | |
1489 } | |
1490 #endif // PRODUCT |