Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/frame.cpp @ 6985:80e866b1d053
Merge
author | coleenp |
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date | Fri, 16 Nov 2012 09:19:12 -0500 |
parents | da91efe96a93 |
children | e522a00b91aa d0aa87f04bd5 cd3d6a6b95d9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "gc_interface/collectedHeap.inline.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "interpreter/oopMapCache.hpp" | |
29 #include "memory/resourceArea.hpp" | |
30 #include "memory/universe.inline.hpp" | |
31 #include "oops/markOop.hpp" | |
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32 #include "oops/methodData.hpp" |
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33 #include "oops/method.hpp" |
1972 | 34 #include "oops/oop.inline.hpp" |
35 #include "oops/oop.inline2.hpp" | |
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36 #include "prims/methodHandles.hpp" |
1972 | 37 #include "runtime/frame.inline.hpp" |
38 #include "runtime/handles.inline.hpp" | |
39 #include "runtime/javaCalls.hpp" | |
40 #include "runtime/monitorChunk.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
42 #include "runtime/signature.hpp" | |
43 #include "runtime/stubCodeGenerator.hpp" | |
44 #include "runtime/stubRoutines.hpp" | |
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45 #include "utilities/decoder.hpp" |
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46 |
1972 | 47 #ifdef TARGET_ARCH_x86 |
48 # include "nativeInst_x86.hpp" | |
49 #endif | |
50 #ifdef TARGET_ARCH_sparc | |
51 # include "nativeInst_sparc.hpp" | |
52 #endif | |
53 #ifdef TARGET_ARCH_zero | |
54 # include "nativeInst_zero.hpp" | |
55 #endif | |
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56 #ifdef TARGET_ARCH_arm |
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57 # include "nativeInst_arm.hpp" |
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58 #endif |
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59 #ifdef TARGET_ARCH_ppc |
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60 # include "nativeInst_ppc.hpp" |
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61 #endif |
0 | 62 |
63 RegisterMap::RegisterMap(JavaThread *thread, bool update_map) { | |
64 _thread = thread; | |
65 _update_map = update_map; | |
66 clear(); | |
67 debug_only(_update_for_id = NULL;) | |
68 #ifndef PRODUCT | |
69 for (int i = 0; i < reg_count ; i++ ) _location[i] = NULL; | |
70 #endif /* PRODUCT */ | |
71 } | |
72 | |
73 RegisterMap::RegisterMap(const RegisterMap* map) { | |
74 assert(map != this, "bad initialization parameter"); | |
75 assert(map != NULL, "RegisterMap must be present"); | |
76 _thread = map->thread(); | |
77 _update_map = map->update_map(); | |
78 _include_argument_oops = map->include_argument_oops(); | |
79 debug_only(_update_for_id = map->_update_for_id;) | |
80 pd_initialize_from(map); | |
81 if (update_map()) { | |
82 for(int i = 0; i < location_valid_size; i++) { | |
83 LocationValidType bits = !update_map() ? 0 : map->_location_valid[i]; | |
84 _location_valid[i] = bits; | |
85 // for whichever bits are set, pull in the corresponding map->_location | |
86 int j = i*location_valid_type_size; | |
87 while (bits != 0) { | |
88 if ((bits & 1) != 0) { | |
89 assert(0 <= j && j < reg_count, "range check"); | |
90 _location[j] = map->_location[j]; | |
91 } | |
92 bits >>= 1; | |
93 j += 1; | |
94 } | |
95 } | |
96 } | |
97 } | |
98 | |
99 void RegisterMap::clear() { | |
100 set_include_argument_oops(true); | |
101 if (_update_map) { | |
102 for(int i = 0; i < location_valid_size; i++) { | |
103 _location_valid[i] = 0; | |
104 } | |
105 pd_clear(); | |
106 } else { | |
107 pd_initialize(); | |
108 } | |
109 } | |
110 | |
111 #ifndef PRODUCT | |
112 | |
113 void RegisterMap::print_on(outputStream* st) const { | |
114 st->print_cr("Register map"); | |
115 for(int i = 0; i < reg_count; i++) { | |
116 | |
117 VMReg r = VMRegImpl::as_VMReg(i); | |
118 intptr_t* src = (intptr_t*) location(r); | |
119 if (src != NULL) { | |
120 | |
417 | 121 r->print_on(st); |
122 st->print(" [" INTPTR_FORMAT "] = ", src); | |
0 | 123 if (((uintptr_t)src & (sizeof(*src)-1)) != 0) { |
417 | 124 st->print_cr("<misaligned>"); |
0 | 125 } else { |
417 | 126 st->print_cr(INTPTR_FORMAT, *src); |
0 | 127 } |
128 } | |
129 } | |
130 } | |
131 | |
132 void RegisterMap::print() const { | |
133 print_on(tty); | |
134 } | |
135 | |
136 #endif | |
137 // This returns the pc that if you were in the debugger you'd see. Not | |
138 // the idealized value in the frame object. This undoes the magic conversion | |
139 // that happens for deoptimized frames. In addition it makes the value the | |
140 // hardware would want to see in the native frame. The only user (at this point) | |
141 // is deoptimization. It likely no one else should ever use it. | |
142 | |
143 address frame::raw_pc() const { | |
144 if (is_deoptimized_frame()) { | |
1204 | 145 nmethod* nm = cb()->as_nmethod_or_null(); |
146 if (nm->is_method_handle_return(pc())) | |
147 return nm->deopt_mh_handler_begin() - pc_return_offset; | |
148 else | |
149 return nm->deopt_handler_begin() - pc_return_offset; | |
0 | 150 } else { |
151 return (pc() - pc_return_offset); | |
152 } | |
153 } | |
154 | |
155 // Change the pc in a frame object. This does not change the actual pc in | |
156 // actual frame. To do that use patch_pc. | |
157 // | |
158 void frame::set_pc(address newpc ) { | |
159 #ifdef ASSERT | |
160 if (_cb != NULL && _cb->is_nmethod()) { | |
161 assert(!((nmethod*)_cb)->is_deopt_pc(_pc), "invariant violation"); | |
162 } | |
163 #endif // ASSERT | |
164 | |
165 // Unsafe to use the is_deoptimzed tester after changing pc | |
166 _deopt_state = unknown; | |
167 _pc = newpc; | |
168 _cb = CodeCache::find_blob_unsafe(_pc); | |
169 | |
170 } | |
171 | |
172 // type testers | |
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173 bool frame::is_ignored_frame() const { |
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174 return false; // FIXME: some LambdaForm frames should be ignored |
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175 } |
0 | 176 bool frame::is_deoptimized_frame() const { |
177 assert(_deopt_state != unknown, "not answerable"); | |
178 return _deopt_state == is_deoptimized; | |
179 } | |
180 | |
181 bool frame::is_native_frame() const { | |
182 return (_cb != NULL && | |
183 _cb->is_nmethod() && | |
184 ((nmethod*)_cb)->is_native_method()); | |
185 } | |
186 | |
187 bool frame::is_java_frame() const { | |
188 if (is_interpreted_frame()) return true; | |
189 if (is_compiled_frame()) return true; | |
190 return false; | |
191 } | |
192 | |
193 | |
194 bool frame::is_compiled_frame() const { | |
195 if (_cb != NULL && | |
196 _cb->is_nmethod() && | |
197 ((nmethod*)_cb)->is_java_method()) { | |
198 return true; | |
199 } | |
200 return false; | |
201 } | |
202 | |
203 | |
204 bool frame::is_runtime_frame() const { | |
205 return (_cb != NULL && _cb->is_runtime_stub()); | |
206 } | |
207 | |
208 bool frame::is_safepoint_blob_frame() const { | |
209 return (_cb != NULL && _cb->is_safepoint_stub()); | |
210 } | |
211 | |
212 // testers | |
213 | |
214 bool frame::is_first_java_frame() const { | |
215 RegisterMap map(JavaThread::current(), false); // No update | |
216 frame s; | |
217 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)); | |
218 return s.is_first_frame(); | |
219 } | |
220 | |
221 | |
222 bool frame::entry_frame_is_first() const { | |
223 return entry_frame_call_wrapper()->anchor()->last_Java_sp() == NULL; | |
224 } | |
225 | |
226 | |
227 bool frame::should_be_deoptimized() const { | |
228 if (_deopt_state == is_deoptimized || | |
229 !is_compiled_frame() ) return false; | |
230 assert(_cb != NULL && _cb->is_nmethod(), "must be an nmethod"); | |
231 nmethod* nm = (nmethod *)_cb; | |
232 if (TraceDependencies) { | |
233 tty->print("checking (%s) ", nm->is_marked_for_deoptimization() ? "true" : "false"); | |
234 nm->print_value_on(tty); | |
235 tty->cr(); | |
236 } | |
237 | |
238 if( !nm->is_marked_for_deoptimization() ) | |
239 return false; | |
240 | |
241 // If at the return point, then the frame has already been popped, and | |
242 // only the return needs to be executed. Don't deoptimize here. | |
243 return !nm->is_at_poll_return(pc()); | |
244 } | |
245 | |
246 bool frame::can_be_deoptimized() const { | |
247 if (!is_compiled_frame()) return false; | |
248 nmethod* nm = (nmethod*)_cb; | |
249 | |
250 if( !nm->can_be_deoptimized() ) | |
251 return false; | |
252 | |
253 return !nm->is_at_poll_return(pc()); | |
254 } | |
255 | |
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256 void frame::deoptimize(JavaThread* thread) { |
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257 // Schedule deoptimization of an nmethod activation with this frame. |
0 | 258 assert(_cb != NULL && _cb->is_nmethod(), "must be"); |
259 nmethod* nm = (nmethod*)_cb; | |
260 | |
261 // This is a fix for register window patching race | |
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262 if (NeedsDeoptSuspend && Thread::current() != thread) { |
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263 assert(SafepointSynchronize::is_at_safepoint(), |
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264 "patching other threads for deopt may only occur at a safepoint"); |
0 | 265 |
266 // It is possible especially with DeoptimizeALot/DeoptimizeRandom that | |
267 // we could see the frame again and ask for it to be deoptimized since | |
268 // it might move for a long time. That is harmless and we just ignore it. | |
269 if (id() == thread->must_deopt_id()) { | |
270 assert(thread->is_deopt_suspend(), "lost suspension"); | |
271 return; | |
272 } | |
273 | |
274 // We are at a safepoint so the target thread can only be | |
275 // in 4 states: | |
276 // blocked - no problem | |
277 // blocked_trans - no problem (i.e. could have woken up from blocked | |
278 // during a safepoint). | |
279 // native - register window pc patching race | |
280 // native_trans - momentary state | |
281 // | |
282 // We could just wait out a thread in native_trans to block. | |
283 // Then we'd have all the issues that the safepoint code has as to | |
284 // whether to spin or block. It isn't worth it. Just treat it like | |
285 // native and be done with it. | |
286 // | |
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287 // Examine the state of the thread at the start of safepoint since |
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288 // threads that were in native at the start of the safepoint could |
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289 // come to a halt during the safepoint, changing the current value |
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290 // of the safepoint_state. |
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291 JavaThreadState state = thread->safepoint_state()->orig_thread_state(); |
0 | 292 if (state == _thread_in_native || state == _thread_in_native_trans) { |
293 // Since we are at a safepoint the target thread will stop itself | |
294 // before it can return to java as long as we remain at the safepoint. | |
295 // Therefore we can put an additional request for the thread to stop | |
296 // no matter what no (like a suspend). This will cause the thread | |
297 // to notice it needs to do the deopt on its own once it leaves native. | |
298 // | |
299 // The only reason we must do this is because on machine with register | |
300 // windows we have a race with patching the return address and the | |
301 // window coming live as the thread returns to the Java code (but still | |
302 // in native mode) and then blocks. It is only this top most frame | |
303 // that is at risk. So in truth we could add an additional check to | |
304 // see if this frame is one that is at risk. | |
305 RegisterMap map(thread, false); | |
306 frame at_risk = thread->last_frame().sender(&map); | |
307 if (id() == at_risk.id()) { | |
308 thread->set_must_deopt_id(id()); | |
309 thread->set_deopt_suspend(); | |
310 return; | |
311 } | |
312 } | |
313 } // NeedsDeoptSuspend | |
314 | |
315 | |
1204 | 316 // If the call site is a MethodHandle call site use the MH deopt |
317 // handler. | |
318 address deopt = nm->is_method_handle_return(pc()) ? | |
319 nm->deopt_mh_handler_begin() : | |
320 nm->deopt_handler_begin(); | |
321 | |
0 | 322 // Save the original pc before we patch in the new one |
323 nm->set_original_pc(this, pc()); | |
324 patch_pc(thread, deopt); | |
1204 | 325 |
0 | 326 #ifdef ASSERT |
327 { | |
328 RegisterMap map(thread, false); | |
329 frame check = thread->last_frame(); | |
330 while (id() != check.id()) { | |
331 check = check.sender(&map); | |
332 } | |
333 assert(check.is_deoptimized_frame(), "missed deopt"); | |
334 } | |
335 #endif // ASSERT | |
336 } | |
337 | |
338 frame frame::java_sender() const { | |
339 RegisterMap map(JavaThread::current(), false); | |
340 frame s; | |
341 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)) ; | |
342 guarantee(s.is_java_frame(), "tried to get caller of first java frame"); | |
343 return s; | |
344 } | |
345 | |
346 frame frame::real_sender(RegisterMap* map) const { | |
347 frame result = sender(map); | |
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348 while (result.is_runtime_frame() || |
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349 result.is_ignored_frame()) { |
0 | 350 result = result.sender(map); |
351 } | |
352 return result; | |
353 } | |
354 | |
355 // Note: called by profiler - NOT for current thread | |
356 frame frame::profile_find_Java_sender_frame(JavaThread *thread) { | |
357 // If we don't recognize this frame, walk back up the stack until we do | |
358 RegisterMap map(thread, false); | |
359 frame first_java_frame = frame(); | |
360 | |
361 // Find the first Java frame on the stack starting with input frame | |
362 if (is_java_frame()) { | |
363 // top frame is compiled frame or deoptimized frame | |
364 first_java_frame = *this; | |
365 } else if (safe_for_sender(thread)) { | |
366 for (frame sender_frame = sender(&map); | |
367 sender_frame.safe_for_sender(thread) && !sender_frame.is_first_frame(); | |
368 sender_frame = sender_frame.sender(&map)) { | |
369 if (sender_frame.is_java_frame()) { | |
370 first_java_frame = sender_frame; | |
371 break; | |
372 } | |
373 } | |
374 } | |
375 return first_java_frame; | |
376 } | |
377 | |
378 // Interpreter frames | |
379 | |
380 | |
381 void frame::interpreter_frame_set_locals(intptr_t* locs) { | |
382 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
383 *interpreter_frame_locals_addr() = locs; | |
384 } | |
385 | |
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386 Method* frame::interpreter_frame_method() const { |
0 | 387 assert(is_interpreted_frame(), "interpreted frame expected"); |
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388 Method* m = *interpreter_frame_method_addr(); |
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389 assert(m->is_metadata(), "bad Method* in interpreter frame"); |
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390 assert(m->is_method(), "not a Method*"); |
0 | 391 return m; |
392 } | |
393 | |
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394 void frame::interpreter_frame_set_method(Method* method) { |
0 | 395 assert(is_interpreted_frame(), "interpreted frame expected"); |
396 *interpreter_frame_method_addr() = method; | |
397 } | |
398 | |
399 void frame::interpreter_frame_set_bcx(intptr_t bcx) { | |
400 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
401 if (ProfileInterpreter) { | |
402 bool formerly_bci = is_bci(interpreter_frame_bcx()); | |
403 bool is_now_bci = is_bci(bcx); | |
404 *interpreter_frame_bcx_addr() = bcx; | |
405 | |
406 intptr_t mdx = interpreter_frame_mdx(); | |
407 | |
408 if (mdx != 0) { | |
409 if (formerly_bci) { | |
410 if (!is_now_bci) { | |
411 // The bcx was just converted from bci to bcp. | |
412 // Convert the mdx in parallel. | |
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413 MethodData* mdo = interpreter_frame_method()->method_data(); |
0 | 414 assert(mdo != NULL, ""); |
415 int mdi = mdx - 1; // We distinguish valid mdi from zero by adding one. | |
416 address mdp = mdo->di_to_dp(mdi); | |
417 interpreter_frame_set_mdx((intptr_t)mdp); | |
418 } | |
419 } else { | |
420 if (is_now_bci) { | |
421 // The bcx was just converted from bcp to bci. | |
422 // Convert the mdx in parallel. | |
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423 MethodData* mdo = interpreter_frame_method()->method_data(); |
0 | 424 assert(mdo != NULL, ""); |
425 int mdi = mdo->dp_to_di((address)mdx); | |
426 interpreter_frame_set_mdx((intptr_t)mdi + 1); // distinguish valid from 0. | |
427 } | |
428 } | |
429 } | |
430 } else { | |
431 *interpreter_frame_bcx_addr() = bcx; | |
432 } | |
433 } | |
434 | |
435 jint frame::interpreter_frame_bci() const { | |
436 assert(is_interpreted_frame(), "interpreted frame expected"); | |
437 intptr_t bcx = interpreter_frame_bcx(); | |
438 return is_bci(bcx) ? bcx : interpreter_frame_method()->bci_from((address)bcx); | |
439 } | |
440 | |
441 void frame::interpreter_frame_set_bci(jint bci) { | |
442 assert(is_interpreted_frame(), "interpreted frame expected"); | |
443 assert(!is_bci(interpreter_frame_bcx()), "should not set bci during GC"); | |
444 interpreter_frame_set_bcx((intptr_t)interpreter_frame_method()->bcp_from(bci)); | |
445 } | |
446 | |
447 address frame::interpreter_frame_bcp() const { | |
448 assert(is_interpreted_frame(), "interpreted frame expected"); | |
449 intptr_t bcx = interpreter_frame_bcx(); | |
450 return is_bci(bcx) ? interpreter_frame_method()->bcp_from(bcx) : (address)bcx; | |
451 } | |
452 | |
453 void frame::interpreter_frame_set_bcp(address bcp) { | |
454 assert(is_interpreted_frame(), "interpreted frame expected"); | |
455 assert(!is_bci(interpreter_frame_bcx()), "should not set bcp during GC"); | |
456 interpreter_frame_set_bcx((intptr_t)bcp); | |
457 } | |
458 | |
459 void frame::interpreter_frame_set_mdx(intptr_t mdx) { | |
460 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
461 assert(ProfileInterpreter, "must be profiling interpreter"); | |
462 *interpreter_frame_mdx_addr() = mdx; | |
463 } | |
464 | |
465 address frame::interpreter_frame_mdp() const { | |
466 assert(ProfileInterpreter, "must be profiling interpreter"); | |
467 assert(is_interpreted_frame(), "interpreted frame expected"); | |
468 intptr_t bcx = interpreter_frame_bcx(); | |
469 intptr_t mdx = interpreter_frame_mdx(); | |
470 | |
471 assert(!is_bci(bcx), "should not access mdp during GC"); | |
472 return (address)mdx; | |
473 } | |
474 | |
475 void frame::interpreter_frame_set_mdp(address mdp) { | |
476 assert(is_interpreted_frame(), "interpreted frame expected"); | |
477 if (mdp == NULL) { | |
478 // Always allow the mdp to be cleared. | |
479 interpreter_frame_set_mdx((intptr_t)mdp); | |
480 } | |
481 intptr_t bcx = interpreter_frame_bcx(); | |
482 assert(!is_bci(bcx), "should not set mdp during GC"); | |
483 interpreter_frame_set_mdx((intptr_t)mdp); | |
484 } | |
485 | |
486 BasicObjectLock* frame::next_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
487 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
488 #ifdef ASSERT | |
489 interpreter_frame_verify_monitor(current); | |
490 #endif | |
491 BasicObjectLock* next = (BasicObjectLock*) (((intptr_t*) current) + interpreter_frame_monitor_size()); | |
492 return next; | |
493 } | |
494 | |
495 BasicObjectLock* frame::previous_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
496 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
497 #ifdef ASSERT | |
498 // // This verification needs to be checked before being enabled | |
499 // interpreter_frame_verify_monitor(current); | |
500 #endif | |
501 BasicObjectLock* previous = (BasicObjectLock*) (((intptr_t*) current) - interpreter_frame_monitor_size()); | |
502 return previous; | |
503 } | |
504 | |
505 // Interpreter locals and expression stack locations. | |
506 | |
507 intptr_t* frame::interpreter_frame_local_at(int index) const { | |
508 const int n = Interpreter::local_offset_in_bytes(index)/wordSize; | |
509 return &((*interpreter_frame_locals_addr())[n]); | |
510 } | |
511 | |
512 intptr_t* frame::interpreter_frame_expression_stack_at(jint offset) const { | |
513 const int i = offset * interpreter_frame_expression_stack_direction(); | |
1506 | 514 const int n = i * Interpreter::stackElementWords; |
0 | 515 return &(interpreter_frame_expression_stack()[n]); |
516 } | |
517 | |
518 jint frame::interpreter_frame_expression_stack_size() const { | |
519 // Number of elements on the interpreter expression stack | |
520 // Callers should span by stackElementWords | |
1506 | 521 int element_size = Interpreter::stackElementWords; |
0 | 522 if (frame::interpreter_frame_expression_stack_direction() < 0) { |
523 return (interpreter_frame_expression_stack() - | |
524 interpreter_frame_tos_address() + 1)/element_size; | |
525 } else { | |
526 return (interpreter_frame_tos_address() - | |
527 interpreter_frame_expression_stack() + 1)/element_size; | |
528 } | |
529 } | |
530 | |
531 | |
532 // (frame::interpreter_frame_sender_sp accessor is in frame_<arch>.cpp) | |
533 | |
534 const char* frame::print_name() const { | |
535 if (is_native_frame()) return "Native"; | |
536 if (is_interpreted_frame()) return "Interpreted"; | |
537 if (is_compiled_frame()) { | |
538 if (is_deoptimized_frame()) return "Deoptimized"; | |
539 return "Compiled"; | |
540 } | |
541 if (sp() == NULL) return "Empty"; | |
542 return "C"; | |
543 } | |
544 | |
545 void frame::print_value_on(outputStream* st, JavaThread *thread) const { | |
546 NOT_PRODUCT(address begin = pc()-40;) | |
547 NOT_PRODUCT(address end = NULL;) | |
548 | |
549 st->print("%s frame (sp=" INTPTR_FORMAT " unextended sp=" INTPTR_FORMAT, print_name(), sp(), unextended_sp()); | |
550 if (sp() != NULL) | |
551 st->print(", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT, fp(), pc()); | |
552 | |
553 if (StubRoutines::contains(pc())) { | |
554 st->print_cr(")"); | |
555 st->print("("); | |
556 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
557 st->print("~Stub::%s", desc->name()); | |
558 NOT_PRODUCT(begin = desc->begin(); end = desc->end();) | |
559 } else if (Interpreter::contains(pc())) { | |
560 st->print_cr(")"); | |
561 st->print("("); | |
562 InterpreterCodelet* desc = Interpreter::codelet_containing(pc()); | |
563 if (desc != NULL) { | |
564 st->print("~"); | |
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565 desc->print_on(st); |
0 | 566 NOT_PRODUCT(begin = desc->code_begin(); end = desc->code_end();) |
567 } else { | |
568 st->print("~interpreter"); | |
569 } | |
570 } | |
571 st->print_cr(")"); | |
572 | |
573 if (_cb != NULL) { | |
574 st->print(" "); | |
575 _cb->print_value_on(st); | |
576 st->cr(); | |
577 #ifndef PRODUCT | |
578 if (end == NULL) { | |
1748 | 579 begin = _cb->code_begin(); |
580 end = _cb->code_end(); | |
0 | 581 } |
582 #endif | |
583 } | |
584 NOT_PRODUCT(if (WizardMode && Verbose) Disassembler::decode(begin, end);) | |
585 } | |
586 | |
587 | |
588 void frame::print_on(outputStream* st) const { | |
589 print_value_on(st,NULL); | |
590 if (is_interpreted_frame()) { | |
591 interpreter_frame_print_on(st); | |
592 } | |
593 } | |
594 | |
595 | |
596 void frame::interpreter_frame_print_on(outputStream* st) const { | |
597 #ifndef PRODUCT | |
598 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
599 jint i; | |
600 for (i = 0; i < interpreter_frame_method()->max_locals(); i++ ) { | |
601 intptr_t x = *interpreter_frame_local_at(i); | |
602 st->print(" - local [" INTPTR_FORMAT "]", x); | |
603 st->fill_to(23); | |
604 st->print_cr("; #%d", i); | |
605 } | |
606 for (i = interpreter_frame_expression_stack_size() - 1; i >= 0; --i ) { | |
607 intptr_t x = *interpreter_frame_expression_stack_at(i); | |
608 st->print(" - stack [" INTPTR_FORMAT "]", x); | |
609 st->fill_to(23); | |
610 st->print_cr("; #%d", i); | |
611 } | |
612 // locks for synchronization | |
613 for (BasicObjectLock* current = interpreter_frame_monitor_end(); | |
614 current < interpreter_frame_monitor_begin(); | |
615 current = next_monitor_in_interpreter_frame(current)) { | |
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616 st->print(" - obj ["); |
0 | 617 current->obj()->print_value_on(st); |
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618 st->print_cr("]"); |
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619 st->print(" - lock ["); |
0 | 620 current->lock()->print_on(st); |
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621 st->print_cr("]"); |
0 | 622 } |
623 // monitor | |
624 st->print_cr(" - monitor[" INTPTR_FORMAT "]", interpreter_frame_monitor_begin()); | |
625 // bcp | |
626 st->print(" - bcp [" INTPTR_FORMAT "]", interpreter_frame_bcp()); | |
627 st->fill_to(23); | |
628 st->print_cr("; @%d", interpreter_frame_bci()); | |
629 // locals | |
630 st->print_cr(" - locals [" INTPTR_FORMAT "]", interpreter_frame_local_at(0)); | |
631 // method | |
632 st->print(" - method [" INTPTR_FORMAT "]", (address)interpreter_frame_method()); | |
633 st->fill_to(23); | |
634 st->print("; "); | |
635 interpreter_frame_method()->print_name(st); | |
636 st->cr(); | |
637 #endif | |
638 } | |
639 | |
640 // Return whether the frame is in the VM or os indicating a Hotspot problem. | |
641 // Otherwise, it's likely a bug in the native library that the Java code calls, | |
642 // hopefully indicating where to submit bugs. | |
643 static void print_C_frame(outputStream* st, char* buf, int buflen, address pc) { | |
644 // C/C++ frame | |
645 bool in_vm = os::address_is_in_vm(pc); | |
646 st->print(in_vm ? "V" : "C"); | |
647 | |
648 int offset; | |
649 bool found; | |
650 | |
651 // libname | |
652 found = os::dll_address_to_library_name(pc, buf, buflen, &offset); | |
653 if (found) { | |
654 // skip directory names | |
655 const char *p1, *p2; | |
656 p1 = buf; | |
657 int len = (int)strlen(os::file_separator()); | |
658 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
659 st->print(" [%s+0x%x]", p1, offset); | |
660 } else { | |
661 st->print(" " PTR_FORMAT, pc); | |
662 } | |
663 | |
664 // function name - os::dll_address_to_function_name() may return confusing | |
665 // names if pc is within jvm.dll or libjvm.so, because JVM only has | |
666 // JVM_xxxx and a few other symbols in the dynamic symbol table. Do this | |
667 // only for native libraries. | |
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668 if (!in_vm || Decoder::can_decode_C_frame_in_vm()) { |
0 | 669 found = os::dll_address_to_function_name(pc, buf, buflen, &offset); |
670 | |
671 if (found) { | |
672 st->print(" %s+0x%x", buf, offset); | |
673 } | |
674 } | |
675 } | |
676 | |
677 // frame::print_on_error() is called by fatal error handler. Notice that we may | |
678 // crash inside this function if stack frame is corrupted. The fatal error | |
679 // handler can catch and handle the crash. Here we assume the frame is valid. | |
680 // | |
681 // First letter indicates type of the frame: | |
682 // J: Java frame (compiled) | |
683 // j: Java frame (interpreted) | |
684 // V: VM frame (C/C++) | |
685 // v: Other frames running VM generated code (e.g. stubs, adapters, etc.) | |
686 // C: C/C++ frame | |
687 // | |
688 // We don't need detailed frame type as that in frame::print_name(). "C" | |
689 // suggests the problem is in user lib; everything else is likely a VM bug. | |
690 | |
691 void frame::print_on_error(outputStream* st, char* buf, int buflen, bool verbose) const { | |
692 if (_cb != NULL) { | |
693 if (Interpreter::contains(pc())) { | |
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694 Method* m = this->interpreter_frame_method(); |
0 | 695 if (m != NULL) { |
696 m->name_and_sig_as_C_string(buf, buflen); | |
697 st->print("j %s", buf); | |
698 st->print("+%d", this->interpreter_frame_bci()); | |
699 } else { | |
700 st->print("j " PTR_FORMAT, pc()); | |
701 } | |
702 } else if (StubRoutines::contains(pc())) { | |
703 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
704 if (desc != NULL) { | |
705 st->print("v ~StubRoutines::%s", desc->name()); | |
706 } else { | |
707 st->print("v ~StubRoutines::" PTR_FORMAT, pc()); | |
708 } | |
709 } else if (_cb->is_buffer_blob()) { | |
710 st->print("v ~BufferBlob::%s", ((BufferBlob *)_cb)->name()); | |
711 } else if (_cb->is_nmethod()) { | |
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712 Method* m = ((nmethod *)_cb)->method(); |
0 | 713 if (m != NULL) { |
714 m->name_and_sig_as_C_string(buf, buflen); | |
715 st->print("J %s", buf); | |
716 } else { | |
717 st->print("J " PTR_FORMAT, pc()); | |
718 } | |
719 } else if (_cb->is_runtime_stub()) { | |
720 st->print("v ~RuntimeStub::%s", ((RuntimeStub *)_cb)->name()); | |
721 } else if (_cb->is_deoptimization_stub()) { | |
722 st->print("v ~DeoptimizationBlob"); | |
723 } else if (_cb->is_exception_stub()) { | |
724 st->print("v ~ExceptionBlob"); | |
725 } else if (_cb->is_safepoint_stub()) { | |
726 st->print("v ~SafepointBlob"); | |
727 } else { | |
728 st->print("v blob " PTR_FORMAT, pc()); | |
729 } | |
730 } else { | |
731 print_C_frame(st, buf, buflen, pc()); | |
732 } | |
733 } | |
734 | |
735 | |
736 /* | |
737 The interpreter_frame_expression_stack_at method in the case of SPARC needs the | |
738 max_stack value of the method in order to compute the expression stack address. | |
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739 It uses the Method* in order to get the max_stack value but during GC this |
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740 Method* value saved on the frame is changed by reverse_and_push and hence cannot |
0 | 741 be used. So we save the max_stack value in the FrameClosure object and pass it |
742 down to the interpreter_frame_expression_stack_at method | |
743 */ | |
744 class InterpreterFrameClosure : public OffsetClosure { | |
745 private: | |
746 frame* _fr; | |
747 OopClosure* _f; | |
748 int _max_locals; | |
749 int _max_stack; | |
750 | |
751 public: | |
752 InterpreterFrameClosure(frame* fr, int max_locals, int max_stack, | |
753 OopClosure* f) { | |
754 _fr = fr; | |
755 _max_locals = max_locals; | |
756 _max_stack = max_stack; | |
757 _f = f; | |
758 } | |
759 | |
760 void offset_do(int offset) { | |
761 oop* addr; | |
762 if (offset < _max_locals) { | |
763 addr = (oop*) _fr->interpreter_frame_local_at(offset); | |
764 assert((intptr_t*)addr >= _fr->sp(), "must be inside the frame"); | |
765 _f->do_oop(addr); | |
766 } else { | |
767 addr = (oop*) _fr->interpreter_frame_expression_stack_at((offset - _max_locals)); | |
768 // In case of exceptions, the expression stack is invalid and the esp will be reset to express | |
769 // this condition. Therefore, we call f only if addr is 'inside' the stack (i.e., addr >= esp for Intel). | |
770 bool in_stack; | |
771 if (frame::interpreter_frame_expression_stack_direction() > 0) { | |
772 in_stack = (intptr_t*)addr <= _fr->interpreter_frame_tos_address(); | |
773 } else { | |
774 in_stack = (intptr_t*)addr >= _fr->interpreter_frame_tos_address(); | |
775 } | |
776 if (in_stack) { | |
777 _f->do_oop(addr); | |
778 } | |
779 } | |
780 } | |
781 | |
782 int max_locals() { return _max_locals; } | |
783 frame* fr() { return _fr; } | |
784 }; | |
785 | |
786 | |
787 class InterpretedArgumentOopFinder: public SignatureInfo { | |
788 private: | |
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789 OopClosure* _f; // Closure to invoke |
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790 int _offset; // TOS-relative offset, decremented with each argument |
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791 bool _has_receiver; // true if the callee has a receiver |
0 | 792 frame* _fr; |
793 | |
794 void set(int size, BasicType type) { | |
795 _offset -= size; | |
796 if (type == T_OBJECT || type == T_ARRAY) oop_offset_do(); | |
797 } | |
798 | |
799 void oop_offset_do() { | |
800 oop* addr; | |
801 addr = (oop*)_fr->interpreter_frame_tos_at(_offset); | |
802 _f->do_oop(addr); | |
803 } | |
804 | |
805 public: | |
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806 InterpretedArgumentOopFinder(Symbol* signature, bool has_receiver, frame* fr, OopClosure* f) : SignatureInfo(signature), _has_receiver(has_receiver) { |
0 | 807 // compute size of arguments |
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808 int args_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
0 | 809 assert(!fr->is_interpreted_frame() || |
810 args_size <= fr->interpreter_frame_expression_stack_size(), | |
811 "args cannot be on stack anymore"); | |
812 // initialize InterpretedArgumentOopFinder | |
813 _f = f; | |
814 _fr = fr; | |
815 _offset = args_size; | |
816 } | |
817 | |
818 void oops_do() { | |
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819 if (_has_receiver) { |
0 | 820 --_offset; |
821 oop_offset_do(); | |
822 } | |
823 iterate_parameters(); | |
824 } | |
825 }; | |
826 | |
827 | |
828 // Entry frame has following form (n arguments) | |
829 // +-----------+ | |
830 // sp -> | last arg | | |
831 // +-----------+ | |
832 // : ::: : | |
833 // +-----------+ | |
834 // (sp+n)->| first arg| | |
835 // +-----------+ | |
836 | |
837 | |
838 | |
839 // visits and GC's all the arguments in entry frame | |
840 class EntryFrameOopFinder: public SignatureInfo { | |
841 private: | |
842 bool _is_static; | |
843 int _offset; | |
844 frame* _fr; | |
845 OopClosure* _f; | |
846 | |
847 void set(int size, BasicType type) { | |
848 assert (_offset >= 0, "illegal offset"); | |
849 if (type == T_OBJECT || type == T_ARRAY) oop_at_offset_do(_offset); | |
850 _offset -= size; | |
851 } | |
852 | |
853 void oop_at_offset_do(int offset) { | |
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854 assert (offset >= 0, "illegal offset"); |
0 | 855 oop* addr = (oop*) _fr->entry_frame_argument_at(offset); |
856 _f->do_oop(addr); | |
857 } | |
858 | |
859 public: | |
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860 EntryFrameOopFinder(frame* frame, Symbol* signature, bool is_static) : SignatureInfo(signature) { |
0 | 861 _f = NULL; // will be set later |
862 _fr = frame; | |
863 _is_static = is_static; | |
864 _offset = ArgumentSizeComputer(signature).size() - 1; // last parameter is at index 0 | |
865 } | |
866 | |
867 void arguments_do(OopClosure* f) { | |
868 _f = f; | |
869 if (!_is_static) oop_at_offset_do(_offset+1); // do the receiver | |
870 iterate_parameters(); | |
871 } | |
872 | |
873 }; | |
874 | |
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875 oop* frame::interpreter_callee_receiver_addr(Symbol* signature) { |
0 | 876 ArgumentSizeComputer asc(signature); |
877 int size = asc.size(); | |
878 return (oop *)interpreter_frame_tos_at(size); | |
879 } | |
880 | |
881 | |
882 void frame::oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache) { | |
883 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
884 assert(map != NULL, "map must be set"); | |
885 Thread *thread = Thread::current(); | |
886 methodHandle m (thread, interpreter_frame_method()); | |
887 jint bci = interpreter_frame_bci(); | |
888 | |
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889 assert(!Universe::heap()->is_in(m()), |
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890 "must be valid oop"); |
0 | 891 assert(m->is_method(), "checking frame value"); |
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892 assert((m->is_native() && bci == 0) || |
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893 (!m->is_native() && bci >= 0 && bci < m->code_size()), |
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894 "invalid bci value"); |
0 | 895 |
896 // Handle the monitor elements in the activation | |
897 for ( | |
898 BasicObjectLock* current = interpreter_frame_monitor_end(); | |
899 current < interpreter_frame_monitor_begin(); | |
900 current = next_monitor_in_interpreter_frame(current) | |
901 ) { | |
902 #ifdef ASSERT | |
903 interpreter_frame_verify_monitor(current); | |
904 #endif | |
905 current->oops_do(f); | |
906 } | |
907 | |
908 // process fixed part | |
1908 | 909 #if !defined(PPC) || defined(ZERO) |
0 | 910 if (m->is_native()) { |
911 #ifdef CC_INTERP | |
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912 interpreterState istate = get_interpreterState(); |
0 | 913 f->do_oop((oop*)&istate->_oop_temp); |
914 #else | |
915 f->do_oop((oop*)( fp() + interpreter_frame_oop_temp_offset )); | |
916 #endif /* CC_INTERP */ | |
917 } | |
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918 #else // PPC |
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919 if (m->is_native() && m->is_static()) { |
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920 f->do_oop(interpreter_frame_mirror_addr()); |
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921 } |
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922 #endif // PPC |
0 | 923 |
924 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
925 | |
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926 Symbol* signature = NULL; |
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927 bool has_receiver = false; |
0 | 928 |
929 // Process a callee's arguments if we are at a call site | |
930 // (i.e., if we are at an invoke bytecode) | |
931 // This is used sometimes for calling into the VM, not for another | |
932 // interpreted or compiled frame. | |
933 if (!m->is_native()) { | |
2142 | 934 Bytecode_invoke call = Bytecode_invoke_check(m, bci); |
935 if (call.is_valid()) { | |
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936 signature = call.signature(); |
2142 | 937 has_receiver = call.has_receiver(); |
0 | 938 if (map->include_argument_oops() && |
939 interpreter_frame_expression_stack_size() > 0) { | |
940 ResourceMark rm(thread); // is this right ??? | |
941 // we are at a call site & the expression stack is not empty | |
942 // => process callee's arguments | |
943 // | |
944 // Note: The expression stack can be empty if an exception | |
605 | 945 // occurred during method resolution/execution. In all |
0 | 946 // cases we empty the expression stack completely be- |
947 // fore handling the exception (the exception handling | |
948 // code in the interpreter calls a blocking runtime | |
949 // routine which can cause this code to be executed). | |
950 // (was bug gri 7/27/98) | |
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951 oops_interpreted_arguments_do(signature, has_receiver, f); |
0 | 952 } |
953 } | |
954 } | |
955 | |
1506 | 956 InterpreterFrameClosure blk(this, max_locals, m->max_stack(), f); |
957 | |
958 // process locals & expression stack | |
959 InterpreterOopMap mask; | |
960 if (query_oop_map_cache) { | |
961 m->mask_for(bci, &mask); | |
0 | 962 } else { |
1506 | 963 OopMapCache::compute_one_oop_map(m, bci, &mask); |
0 | 964 } |
1506 | 965 mask.iterate_oop(&blk); |
0 | 966 } |
967 | |
968 | |
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969 void frame::oops_interpreted_arguments_do(Symbol* signature, bool has_receiver, OopClosure* f) { |
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970 InterpretedArgumentOopFinder finder(signature, has_receiver, this, f); |
0 | 971 finder.oops_do(); |
972 } | |
973 | |
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974 void frame::oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* reg_map) { |
0 | 975 assert(_cb != NULL, "sanity check"); |
976 if (_cb->oop_maps() != NULL) { | |
977 OopMapSet::oops_do(this, reg_map, f); | |
978 | |
979 // Preserve potential arguments for a callee. We handle this by dispatching | |
980 // on the codeblob. For c2i, we do | |
981 if (reg_map->include_argument_oops()) { | |
982 _cb->preserve_callee_argument_oops(*this, reg_map, f); | |
983 } | |
984 } | |
985 // In cases where perm gen is collected, GC will want to mark | |
986 // oops referenced from nmethods active on thread stacks so as to | |
987 // prevent them from being collected. However, this visit should be | |
988 // restricted to certain phases of the collection only. The | |
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989 // closure decides how it wants nmethods to be traced. |
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990 if (cf != NULL) |
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991 cf->do_code_blob(_cb); |
0 | 992 } |
993 | |
994 class CompiledArgumentOopFinder: public SignatureInfo { | |
995 protected: | |
996 OopClosure* _f; | |
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997 int _offset; // the current offset, incremented with each argument |
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998 bool _has_receiver; // true if the callee has a receiver |
0 | 999 frame _fr; |
1000 RegisterMap* _reg_map; | |
1001 int _arg_size; | |
1002 VMRegPair* _regs; // VMReg list of arguments | |
1003 | |
1004 void set(int size, BasicType type) { | |
1005 if (type == T_OBJECT || type == T_ARRAY) handle_oop_offset(); | |
1006 _offset += size; | |
1007 } | |
1008 | |
1009 virtual void handle_oop_offset() { | |
1010 // Extract low order register number from register array. | |
1011 // In LP64-land, the high-order bits are valid but unhelpful. | |
1012 VMReg reg = _regs[_offset].first(); | |
1013 oop *loc = _fr.oopmapreg_to_location(reg, _reg_map); | |
1014 _f->do_oop(loc); | |
1015 } | |
1016 | |
1017 public: | |
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1018 CompiledArgumentOopFinder(Symbol* signature, bool has_receiver, OopClosure* f, frame fr, const RegisterMap* reg_map) |
0 | 1019 : SignatureInfo(signature) { |
1020 | |
1021 // initialize CompiledArgumentOopFinder | |
1022 _f = f; | |
1023 _offset = 0; | |
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1024 _has_receiver = has_receiver; |
0 | 1025 _fr = fr; |
1026 _reg_map = (RegisterMap*)reg_map; | |
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1027 _arg_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
0 | 1028 |
1029 int arg_size; | |
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1030 _regs = SharedRuntime::find_callee_arguments(signature, has_receiver, &arg_size); |
0 | 1031 assert(arg_size == _arg_size, "wrong arg size"); |
1032 } | |
1033 | |
1034 void oops_do() { | |
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1035 if (_has_receiver) { |
0 | 1036 handle_oop_offset(); |
1037 _offset++; | |
1038 } | |
1039 iterate_parameters(); | |
1040 } | |
1041 }; | |
1042 | |
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1043 void frame::oops_compiled_arguments_do(Symbol* signature, bool has_receiver, const RegisterMap* reg_map, OopClosure* f) { |
0 | 1044 ResourceMark rm; |
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1045 CompiledArgumentOopFinder finder(signature, has_receiver, f, *this, reg_map); |
0 | 1046 finder.oops_do(); |
1047 } | |
1048 | |
1049 | |
1050 // Get receiver out of callers frame, i.e. find parameter 0 in callers | |
1051 // frame. Consult ADLC for where parameter 0 is to be found. Then | |
1052 // check local reg_map for it being a callee-save register or argument | |
1053 // register, both of which are saved in the local frame. If not found | |
1054 // there, it must be an in-stack argument of the caller. | |
1055 // Note: caller.sp() points to callee-arguments | |
1056 oop frame::retrieve_receiver(RegisterMap* reg_map) { | |
1057 frame caller = *this; | |
1058 | |
1059 // First consult the ADLC on where it puts parameter 0 for this signature. | |
1060 VMReg reg = SharedRuntime::name_for_receiver(); | |
1061 oop r = *caller.oopmapreg_to_location(reg, reg_map); | |
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1062 assert(Universe::heap()->is_in_or_null(r), err_msg("bad receiver: " INTPTR_FORMAT " (" INTX_FORMAT ")", (intptr_t) r, (intptr_t) r)); |
0 | 1063 return r; |
1064 } | |
1065 | |
1066 | |
1067 oop* frame::oopmapreg_to_location(VMReg reg, const RegisterMap* reg_map) const { | |
1068 if(reg->is_reg()) { | |
1069 // If it is passed in a register, it got spilled in the stub frame. | |
1070 return (oop *)reg_map->location(reg); | |
1071 } else { | |
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1072 int sp_offset_in_bytes = reg->reg2stack() * VMRegImpl::stack_slot_size; |
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1073 return (oop*)(((address)unextended_sp()) + sp_offset_in_bytes); |
0 | 1074 } |
1075 } | |
1076 | |
2019 | 1077 BasicLock* frame::get_native_monitor() { |
1078 nmethod* nm = (nmethod*)_cb; | |
1079 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
1080 "Should not call this unless it's a native nmethod"); | |
1081 int byte_offset = in_bytes(nm->native_basic_lock_sp_offset()); | |
0 | 1082 assert(byte_offset >= 0, "should not see invalid offset"); |
1083 return (BasicLock*) &sp()[byte_offset / wordSize]; | |
1084 } | |
1085 | |
2019 | 1086 oop frame::get_native_receiver() { |
1087 nmethod* nm = (nmethod*)_cb; | |
1088 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
1089 "Should not call this unless it's a native nmethod"); | |
1090 int byte_offset = in_bytes(nm->native_receiver_sp_offset()); | |
0 | 1091 assert(byte_offset >= 0, "should not see invalid offset"); |
1092 oop owner = ((oop*) sp())[byte_offset / wordSize]; | |
1093 assert( Universe::heap()->is_in(owner), "bad receiver" ); | |
1094 return owner; | |
1095 } | |
1096 | |
1097 void frame::oops_entry_do(OopClosure* f, const RegisterMap* map) { | |
1098 assert(map != NULL, "map must be set"); | |
1099 if (map->include_argument_oops()) { | |
1100 // must collect argument oops, as nobody else is doing it | |
1101 Thread *thread = Thread::current(); | |
1102 methodHandle m (thread, entry_frame_call_wrapper()->callee_method()); | |
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1103 EntryFrameOopFinder finder(this, m->signature(), m->is_static()); |
0 | 1104 finder.arguments_do(f); |
1105 } | |
1106 // Traverse the Handle Block saved in the entry frame | |
1107 entry_frame_call_wrapper()->oops_do(f); | |
1108 } | |
1109 | |
1110 | |
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1111 void frame::oops_do_internal(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache) { |
1119
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1112 #ifndef PRODUCT |
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1113 // simulate GC crash here to dump java thread in error report |
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1114 if (CrashGCForDumpingJavaThread) { |
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1115 char *t = NULL; |
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1116 *t = 'c'; |
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1117 } |
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1118 #endif |
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1119 if (is_interpreted_frame()) { |
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1120 oops_interpreted_do(f, map, use_interpreter_oop_map_cache); |
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1121 } else if (is_entry_frame()) { |
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1122 oops_entry_do(f, map); |
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1123 } else if (CodeCache::contains(pc())) { |
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1124 oops_code_blob_do(f, cf, map); |
1692 | 1125 #ifdef SHARK |
1126 } else if (is_fake_stub_frame()) { | |
1127 // nothing to do | |
1128 #endif // SHARK | |
0 | 1129 } else { |
1130 ShouldNotReachHere(); | |
1131 } | |
1132 } | |
1133 | |
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1134 void frame::nmethods_do(CodeBlobClosure* cf) { |
0 | 1135 if (_cb != NULL && _cb->is_nmethod()) { |
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1136 cf->do_code_blob(_cb); |
0 | 1137 } |
1138 } | |
1139 | |
1140 | |
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1141 // call f() on the interpreted Method*s in the stack. |
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1142 // Have to walk the entire code cache for the compiled frames Yuck. |
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1143 void frame::metadata_do(void f(Metadata*)) { |
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1144 if (_cb != NULL && Interpreter::contains(pc())) { |
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1145 Method* m = this->interpreter_frame_method(); |
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1146 assert(m != NULL, "huh?"); |
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1147 f(m); |
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1148 } |
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1149 } |
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1150 |
0 | 1151 void frame::gc_prologue() { |
1152 if (is_interpreted_frame()) { | |
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1153 // set bcx to bci to become Method* position independent during GC |
0 | 1154 interpreter_frame_set_bcx(interpreter_frame_bci()); |
1155 } | |
1156 } | |
1157 | |
1158 | |
1159 void frame::gc_epilogue() { | |
1160 if (is_interpreted_frame()) { | |
1161 // set bcx back to bcp for interpreter | |
1162 interpreter_frame_set_bcx((intptr_t)interpreter_frame_bcp()); | |
1163 } | |
1164 // call processor specific epilog function | |
1165 pd_gc_epilog(); | |
1166 } | |
1167 | |
1168 | |
1169 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
1170 | |
1171 void frame::CheckValueClosure::do_oop(oop* p) { | |
1172 if (CheckOopishValues && Universe::heap()->is_in_reserved(*p)) { | |
1173 warning("value @ " INTPTR_FORMAT " looks oopish (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
1174 } | |
1175 } | |
1176 frame::CheckValueClosure frame::_check_value; | |
1177 | |
1178 | |
1179 void frame::CheckOopClosure::do_oop(oop* p) { | |
1180 if (*p != NULL && !(*p)->is_oop()) { | |
1181 warning("value @ " INTPTR_FORMAT " should be an oop (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
1182 } | |
1183 } | |
1184 frame::CheckOopClosure frame::_check_oop; | |
1185 | |
1186 void frame::check_derived_oop(oop* base, oop* derived) { | |
1187 _check_oop.do_oop(base); | |
1188 } | |
1189 | |
1190 | |
1191 void frame::ZapDeadClosure::do_oop(oop* p) { | |
1192 if (TraceZapDeadLocals) tty->print_cr("zapping @ " INTPTR_FORMAT " containing " INTPTR_FORMAT, p, (address)*p); | |
1193 // Need cast because on _LP64 the conversion to oop is ambiguous. Constant | |
1194 // can be either long or int. | |
1195 *p = (oop)(int)0xbabebabe; | |
1196 } | |
1197 frame::ZapDeadClosure frame::_zap_dead; | |
1198 | |
1199 void frame::zap_dead_locals(JavaThread* thread, const RegisterMap* map) { | |
1200 assert(thread == Thread::current(), "need to synchronize to do this to another thread"); | |
1201 // Tracing - part 1 | |
1202 if (TraceZapDeadLocals) { | |
1203 ResourceMark rm(thread); | |
1204 tty->print_cr("--------------------------------------------------------------------------------"); | |
1205 tty->print("Zapping dead locals in "); | |
1206 print_on(tty); | |
1207 tty->cr(); | |
1208 } | |
1209 // Zapping | |
1210 if (is_entry_frame ()) zap_dead_entry_locals (thread, map); | |
1211 else if (is_interpreted_frame()) zap_dead_interpreted_locals(thread, map); | |
1212 else if (is_compiled_frame()) zap_dead_compiled_locals (thread, map); | |
1213 | |
1214 else | |
1215 // could be is_runtime_frame | |
1216 // so remove error: ShouldNotReachHere(); | |
1217 ; | |
1218 // Tracing - part 2 | |
1219 if (TraceZapDeadLocals) { | |
1220 tty->cr(); | |
1221 } | |
1222 } | |
1223 | |
1224 | |
1225 void frame::zap_dead_interpreted_locals(JavaThread *thread, const RegisterMap* map) { | |
1226 // get current interpreter 'pc' | |
1227 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
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1228 Method* m = interpreter_frame_method(); |
0 | 1229 int bci = interpreter_frame_bci(); |
1230 | |
1231 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
1232 | |
1506 | 1233 // process dynamic part |
1234 InterpreterFrameClosure value_blk(this, max_locals, m->max_stack(), | |
1235 &_check_value); | |
1236 InterpreterFrameClosure oop_blk(this, max_locals, m->max_stack(), | |
1237 &_check_oop ); | |
1238 InterpreterFrameClosure dead_blk(this, max_locals, m->max_stack(), | |
1239 &_zap_dead ); | |
0 | 1240 |
1506 | 1241 // get frame map |
1242 InterpreterOopMap mask; | |
1243 m->mask_for(bci, &mask); | |
1244 mask.iterate_all( &oop_blk, &value_blk, &dead_blk); | |
0 | 1245 } |
1246 | |
1247 | |
1248 void frame::zap_dead_compiled_locals(JavaThread* thread, const RegisterMap* reg_map) { | |
1249 | |
1250 ResourceMark rm(thread); | |
1251 assert(_cb != NULL, "sanity check"); | |
1252 if (_cb->oop_maps() != NULL) { | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
0
diff
changeset
|
1253 OopMapSet::all_do(this, reg_map, &_check_oop, check_derived_oop, &_check_value); |
0 | 1254 } |
1255 } | |
1256 | |
1257 | |
1258 void frame::zap_dead_entry_locals(JavaThread*, const RegisterMap*) { | |
1259 if (TraceZapDeadLocals) warning("frame::zap_dead_entry_locals unimplemented"); | |
1260 } | |
1261 | |
1262 | |
1263 void frame::zap_dead_deoptimized_locals(JavaThread*, const RegisterMap*) { | |
1264 if (TraceZapDeadLocals) warning("frame::zap_dead_deoptimized_locals unimplemented"); | |
1265 } | |
1266 | |
1267 # endif // ENABLE_ZAP_DEAD_LOCALS | |
1268 | |
1269 void frame::verify(const RegisterMap* map) { | |
1270 // for now make sure receiver type is correct | |
1271 if (is_interpreted_frame()) { | |
6725
da91efe96a93
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6266
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|
1272 Method* method = interpreter_frame_method(); |
0 | 1273 guarantee(method->is_method(), "method is wrong in frame::verify"); |
1274 if (!method->is_static()) { | |
1275 // fetch the receiver | |
1276 oop* p = (oop*) interpreter_frame_local_at(0); | |
1277 // make sure we have the right receiver type | |
1278 } | |
1279 } | |
1280 COMPILER2_PRESENT(assert(DerivedPointerTable::is_empty(), "must be empty before verify");) | |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
605
diff
changeset
|
1281 oops_do_internal(&VerifyOopClosure::verify_oop, NULL, (RegisterMap*)map, false); |
0 | 1282 } |
1283 | |
1284 | |
1285 #ifdef ASSERT | |
1286 bool frame::verify_return_pc(address x) { | |
1287 if (StubRoutines::returns_to_call_stub(x)) { | |
1288 return true; | |
1289 } | |
1290 if (CodeCache::contains(x)) { | |
1291 return true; | |
1292 } | |
1293 if (Interpreter::contains(x)) { | |
1294 return true; | |
1295 } | |
1296 return false; | |
1297 } | |
1298 #endif | |
1299 | |
1300 #ifdef ASSERT | |
1301 void frame::interpreter_frame_verify_monitor(BasicObjectLock* value) const { | |
1302 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
1303 // verify that the value is in the right part of the frame | |
1304 address low_mark = (address) interpreter_frame_monitor_end(); | |
1305 address high_mark = (address) interpreter_frame_monitor_begin(); | |
1306 address current = (address) value; | |
1307 | |
1308 const int monitor_size = frame::interpreter_frame_monitor_size(); | |
1309 guarantee((high_mark - current) % monitor_size == 0 , "Misaligned top of BasicObjectLock*"); | |
1310 guarantee( high_mark > current , "Current BasicObjectLock* higher than high_mark"); | |
1311 | |
1312 guarantee((current - low_mark) % monitor_size == 0 , "Misaligned bottom of BasicObjectLock*"); | |
1313 guarantee( current >= low_mark , "Current BasicObjectLock* below than low_mark"); | |
1314 } | |
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1315 #endif |
3336
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diff
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|
1316 |
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changeset
|
1317 #ifndef PRODUCT |
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|
1318 void frame::describe(FrameValues& values, int frame_no) { |
4818
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1319 // boundaries: sp and the 'real' frame pointer |
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7120450: complete information dumped by frame_describe
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1320 values.describe(-1, sp(), err_msg("sp for #%d", frame_no), 1); |
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1321 intptr_t* frame_pointer = real_fp(); // Note: may differ from fp() |
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changeset
|
1322 |
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changeset
|
1323 // print frame info at the highest boundary |
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diff
changeset
|
1324 intptr_t* info_address = MAX2(sp(), frame_pointer); |
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diff
changeset
|
1325 |
82e5a84b7436
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diff
changeset
|
1326 if (info_address != frame_pointer) { |
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diff
changeset
|
1327 // print frame_pointer explicitly if not marked by the frame info |
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diff
changeset
|
1328 values.describe(-1, frame_pointer, err_msg("frame pointer for #%d", frame_no), 1); |
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changeset
|
1329 } |
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|
1330 |
3336
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changeset
|
1331 if (is_entry_frame() || is_compiled_frame() || is_interpreted_frame() || is_native_frame()) { |
2e038ad0c1d0
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changeset
|
1332 // Label values common to most frames |
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diff
changeset
|
1333 values.describe(-1, unextended_sp(), err_msg("unextended_sp for #%d", frame_no)); |
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|
1334 } |
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diff
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|
1335 |
3336
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changeset
|
1336 if (is_interpreted_frame()) { |
6725
da91efe96a93
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changeset
|
1337 Method* m = interpreter_frame_method(); |
3336
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changeset
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1338 int bci = interpreter_frame_bci(); |
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changeset
|
1339 |
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diff
changeset
|
1340 // Label the method and current bci |
4818
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diff
changeset
|
1341 values.describe(-1, info_address, |
3336
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never
parents:
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diff
changeset
|
1342 FormatBuffer<1024>("#%d method %s @ %d", frame_no, m->name_and_sig_as_C_string(), bci), 2); |
4818
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diff
changeset
|
1343 values.describe(-1, info_address, |
3336
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diff
changeset
|
1344 err_msg("- %d locals %d max stack", m->max_locals(), m->max_stack()), 1); |
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changeset
|
1345 if (m->max_locals() > 0) { |
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diff
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|
1346 intptr_t* l0 = interpreter_frame_local_at(0); |
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diff
changeset
|
1347 intptr_t* ln = interpreter_frame_local_at(m->max_locals() - 1); |
2e038ad0c1d0
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diff
changeset
|
1348 values.describe(-1, MAX2(l0, ln), err_msg("locals for #%d", frame_no), 1); |
2e038ad0c1d0
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parents:
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diff
changeset
|
1349 // Report each local and mark as owned by this frame |
2e038ad0c1d0
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diff
changeset
|
1350 for (int l = 0; l < m->max_locals(); l++) { |
2e038ad0c1d0
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diff
changeset
|
1351 intptr_t* l0 = interpreter_frame_local_at(l); |
2e038ad0c1d0
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parents:
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diff
changeset
|
1352 values.describe(frame_no, l0, err_msg("local %d", l)); |
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7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents:
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diff
changeset
|
1353 } |
2e038ad0c1d0
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parents:
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diff
changeset
|
1354 } |
2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
parents:
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diff
changeset
|
1355 |
2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
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diff
changeset
|
1356 // Compute the actual expression stack size |
2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
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diff
changeset
|
1357 InterpreterOopMap mask; |
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diff
changeset
|
1358 OopMapCache::compute_one_oop_map(m, bci, &mask); |
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never
parents:
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diff
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|
1359 intptr_t* tos = NULL; |
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changeset
|
1360 // Report each stack element and mark as owned by this frame |
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|
1361 for (int e = 0; e < mask.expression_stack_size(); e++) { |
2e038ad0c1d0
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diff
changeset
|
1362 tos = MAX2(tos, interpreter_frame_expression_stack_at(e)); |
2e038ad0c1d0
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never
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diff
changeset
|
1363 values.describe(frame_no, interpreter_frame_expression_stack_at(e), |
2e038ad0c1d0
7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
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|
1364 err_msg("stack %d", e)); |
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diff
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|
1365 } |
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|
1366 if (tos != NULL) { |
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never
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diff
changeset
|
1367 values.describe(-1, tos, err_msg("expression stack for #%d", frame_no), 1); |
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|
1368 } |
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|
1369 if (interpreter_frame_monitor_begin() != interpreter_frame_monitor_end()) { |
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changeset
|
1370 values.describe(frame_no, (intptr_t*)interpreter_frame_monitor_begin(), "monitors begin"); |
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|
1371 values.describe(frame_no, (intptr_t*)interpreter_frame_monitor_end(), "monitors end"); |
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diff
changeset
|
1372 } |
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|
1373 } else if (is_entry_frame()) { |
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7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
never
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diff
changeset
|
1374 // For now just label the frame |
4818
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|
1375 values.describe(-1, info_address, err_msg("#%d entry frame", frame_no), 2); |
3336
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diff
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|
1376 } else if (is_compiled_frame()) { |
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changeset
|
1377 // For now just label the frame |
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|
1378 nmethod* nm = cb()->as_nmethod_or_null(); |
4818
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|
1379 values.describe(-1, info_address, |
3336
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|
1380 FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for method %s%s", frame_no, |
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diff
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|
1381 nm, nm->method()->name_and_sig_as_C_string(), |
4818
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|
1382 (_deopt_state == is_deoptimized) ? |
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|
1383 " (deoptimized)" : |
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1384 ((_deopt_state == unknown) ? " (state unknown)" : "")), |
82e5a84b7436
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1385 2); |
3336
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1386 } else if (is_native_frame()) { |
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|
1387 // For now just label the frame |
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|
1388 nmethod* nm = cb()->as_nmethod_or_null(); |
4818
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|
1389 values.describe(-1, info_address, |
3336
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1390 FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for native method %s", frame_no, |
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|
1391 nm, nm->method()->name_and_sig_as_C_string()), 2); |
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diff
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|
1392 } else { |
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diff
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|
1393 // provide default info if not handled before |
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|
1394 char *info = (char *) "special frame"; |
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diff
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|
1395 if ((_cb != NULL) && |
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|
1396 (_cb->name() != NULL)) { |
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|
1397 info = (char *)_cb->name(); |
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|
1398 } |
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|
1399 values.describe(-1, info_address, err_msg("#%d <%s>", frame_no, info), 2); |
3336
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|
1400 } |
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|
1401 |
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|
1402 // platform dependent additional data |
3336
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changeset
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1403 describe_pd(values, frame_no); |
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|
1404 } |
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|
1405 |
0 | 1406 #endif |
1407 | |
1408 | |
1409 //----------------------------------------------------------------------------------- | |
1410 // StackFrameStream implementation | |
1411 | |
1412 StackFrameStream::StackFrameStream(JavaThread *thread, bool update) : _reg_map(thread, update) { | |
1413 assert(thread->has_last_Java_frame(), "sanity check"); | |
1414 _fr = thread->last_frame(); | |
1415 _is_done = false; | |
1416 } | |
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|
1417 |
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diff
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|
1418 |
4824
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diff
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|
1419 #ifndef PRODUCT |
3336
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1420 |
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changeset
|
1421 void FrameValues::describe(int owner, intptr_t* location, const char* description, int priority) { |
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changeset
|
1422 FrameValue fv; |
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changeset
|
1423 fv.location = location; |
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diff
changeset
|
1424 fv.owner = owner; |
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1425 fv.priority = priority; |
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1426 fv.description = NEW_RESOURCE_ARRAY(char, strlen(description) + 1); |
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1427 strcpy(fv.description, description); |
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1428 _values.append(fv); |
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|
1429 } |
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|
1430 |
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|
1431 |
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|
1432 #ifdef ASSERT |
3365
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|
1433 void FrameValues::validate() { |
3336
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1434 _values.sort(compare); |
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1435 bool error = false; |
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|
1436 FrameValue prev; |
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|
1437 prev.owner = -1; |
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|
1438 for (int i = _values.length() - 1; i >= 0; i--) { |
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1439 FrameValue fv = _values.at(i); |
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1440 if (fv.owner == -1) continue; |
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1441 if (prev.owner == -1) { |
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|
1442 prev = fv; |
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|
1443 continue; |
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|
1444 } |
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|
1445 if (prev.location == fv.location) { |
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1446 if (fv.owner != prev.owner) { |
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|
1447 tty->print_cr("overlapping storage"); |
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|
1448 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT " %s", prev.location, *prev.location, prev.description); |
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|
1449 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT " %s", fv.location, *fv.location, fv.description); |
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|
1450 error = true; |
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|
1451 } |
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|
1452 } else { |
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|
1453 prev = fv; |
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|
1454 } |
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|
1455 } |
3365
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|
1456 assert(!error, "invalid layout"); |
3336
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|
1457 } |
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|
1458 #endif // ASSERT |
3336
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|
1459 |
4042
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|
1460 void FrameValues::print(JavaThread* thread) { |
3336
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|
1461 _values.sort(compare); |
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|
1462 |
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changeset
|
1463 // Sometimes values like the fp can be invalid values if the |
3d2ab563047a
7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
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|
1464 // register map wasn't updated during the walk. Trim out values |
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|
1465 // that aren't actually in the stack of the thread. |
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diff
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|
1466 int min_index = 0; |
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diff
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|
1467 int max_index = _values.length() - 1; |
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diff
changeset
|
1468 intptr_t* v0 = _values.at(min_index).location; |
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diff
changeset
|
1469 intptr_t* v1 = _values.at(max_index).location; |
4042
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diff
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|
1470 |
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7090904: JSR 292: JRuby junit test crashes in PSScavengeRootsClosure::do_oop
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changeset
|
1471 if (thread == Thread::current()) { |
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parents:
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changeset
|
1472 while (!thread->is_in_stack((address)v0)) { |
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changeset
|
1473 v0 = _values.at(++min_index).location; |
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|
1474 } |
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changeset
|
1475 while (!thread->is_in_stack((address)v1)) { |
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parents:
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diff
changeset
|
1476 v1 = _values.at(--max_index).location; |
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|
1477 } |
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parents:
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changeset
|
1478 } else { |
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parents:
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diff
changeset
|
1479 while (!thread->on_local_stack((address)v0)) { |
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parents:
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diff
changeset
|
1480 v0 = _values.at(++min_index).location; |
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parents:
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diff
changeset
|
1481 } |
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parents:
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diff
changeset
|
1482 while (!thread->on_local_stack((address)v1)) { |
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parents:
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diff
changeset
|
1483 v1 = _values.at(--max_index).location; |
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parents:
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diff
changeset
|
1484 } |
3369
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7043461: VM crashes in void LinkResolver::runtime_resolve_virtual_method
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parents:
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diff
changeset
|
1485 } |
3336
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|
1486 intptr_t* min = MIN2(v0, v1); |
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|
1487 intptr_t* max = MAX2(v0, v1); |
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changeset
|
1488 intptr_t* cur = max; |
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changeset
|
1489 intptr_t* last = NULL; |
3369
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parents:
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diff
changeset
|
1490 for (int i = max_index; i >= min_index; i--) { |
3336
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parents:
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diff
changeset
|
1491 FrameValue fv = _values.at(i); |
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diff
changeset
|
1492 while (cur > fv.location) { |
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diff
changeset
|
1493 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT, cur, *cur); |
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diff
changeset
|
1494 cur--; |
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diff
changeset
|
1495 } |
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diff
changeset
|
1496 if (last == fv.location) { |
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diff
changeset
|
1497 const char* spacer = " " LP64_ONLY(" "); |
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diff
changeset
|
1498 tty->print_cr(" %s %s %s", spacer, spacer, fv.description); |
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diff
changeset
|
1499 } else { |
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7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
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diff
changeset
|
1500 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT " %s", fv.location, *fv.location, fv.description); |
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diff
changeset
|
1501 last = fv.location; |
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diff
changeset
|
1502 cur--; |
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diff
changeset
|
1503 } |
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diff
changeset
|
1504 } |
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diff
changeset
|
1505 } |
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7009361: JSR 292 Invalid value on stack on solaris-sparc with -Xcomp
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parents:
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diff
changeset
|
1506 |
4824
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changeset
|
1507 #endif // ndef PRODUCT |