Mercurial > hg > truffle
annotate src/share/vm/runtime/frame.cpp @ 4673:8021e46f4a99
another fix for resolving the issue with biased monitor and deoptimization
author | Christian Haeubl <christian.haeubl@oracle.com> |
---|---|
date | Wed, 22 Feb 2012 16:53:23 -0800 |
parents | 3dbcd1013cc8 |
children | 84e7d6690293 |
rev | line source |
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0 | 1 /* |
2142 | 2 * Copyright (c) 1997, 2011, 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" | |
32 #include "oops/methodDataOop.hpp" | |
33 #include "oops/methodOop.hpp" | |
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_ricochet_frame() const { |
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174 RicochetBlob* rcb = SharedRuntime::ricochet_blob(); |
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175 return (_cb == rcb && rcb != NULL && rcb->returns_to_bounce_addr(_pc)); |
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176 } |
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177 |
0 | 178 bool frame::is_deoptimized_frame() const { |
179 assert(_deopt_state != unknown, "not answerable"); | |
180 return _deopt_state == is_deoptimized; | |
181 } | |
182 | |
183 bool frame::is_native_frame() const { | |
184 return (_cb != NULL && | |
185 _cb->is_nmethod() && | |
186 ((nmethod*)_cb)->is_native_method()); | |
187 } | |
188 | |
189 bool frame::is_java_frame() const { | |
190 if (is_interpreted_frame()) return true; | |
191 if (is_compiled_frame()) return true; | |
192 return false; | |
193 } | |
194 | |
195 | |
196 bool frame::is_compiled_frame() const { | |
197 if (_cb != NULL && | |
198 _cb->is_nmethod() && | |
199 ((nmethod*)_cb)->is_java_method()) { | |
200 return true; | |
201 } | |
202 return false; | |
203 } | |
204 | |
205 | |
206 bool frame::is_runtime_frame() const { | |
207 return (_cb != NULL && _cb->is_runtime_stub()); | |
208 } | |
209 | |
210 bool frame::is_safepoint_blob_frame() const { | |
211 return (_cb != NULL && _cb->is_safepoint_stub()); | |
212 } | |
213 | |
214 // testers | |
215 | |
216 bool frame::is_first_java_frame() const { | |
217 RegisterMap map(JavaThread::current(), false); // No update | |
218 frame s; | |
219 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)); | |
220 return s.is_first_frame(); | |
221 } | |
222 | |
223 | |
224 bool frame::entry_frame_is_first() const { | |
225 return entry_frame_call_wrapper()->anchor()->last_Java_sp() == NULL; | |
226 } | |
227 | |
228 | |
229 bool frame::should_be_deoptimized() const { | |
230 if (_deopt_state == is_deoptimized || | |
231 !is_compiled_frame() ) return false; | |
232 assert(_cb != NULL && _cb->is_nmethod(), "must be an nmethod"); | |
233 nmethod* nm = (nmethod *)_cb; | |
234 if (TraceDependencies) { | |
235 tty->print("checking (%s) ", nm->is_marked_for_deoptimization() ? "true" : "false"); | |
236 nm->print_value_on(tty); | |
237 tty->cr(); | |
238 } | |
239 | |
240 if( !nm->is_marked_for_deoptimization() ) | |
241 return false; | |
242 | |
243 // If at the return point, then the frame has already been popped, and | |
244 // only the return needs to be executed. Don't deoptimize here. | |
245 return !nm->is_at_poll_return(pc()); | |
246 } | |
247 | |
248 bool frame::can_be_deoptimized() const { | |
249 if (!is_compiled_frame()) return false; | |
250 nmethod* nm = (nmethod*)_cb; | |
251 | |
252 if( !nm->can_be_deoptimized() ) | |
253 return false; | |
254 | |
255 return !nm->is_at_poll_return(pc()); | |
256 } | |
257 | |
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258 void frame::deoptimize(JavaThread* thread) { |
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259 // Schedule deoptimization of an nmethod activation with this frame. |
0 | 260 assert(_cb != NULL && _cb->is_nmethod(), "must be"); |
261 nmethod* nm = (nmethod*)_cb; | |
262 | |
263 // This is a fix for register window patching race | |
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264 if (NeedsDeoptSuspend && Thread::current() != thread) { |
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265 assert(SafepointSynchronize::is_at_safepoint(), |
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266 "patching other threads for deopt may only occur at a safepoint"); |
0 | 267 |
268 // It is possible especially with DeoptimizeALot/DeoptimizeRandom that | |
269 // we could see the frame again and ask for it to be deoptimized since | |
270 // it might move for a long time. That is harmless and we just ignore it. | |
271 if (id() == thread->must_deopt_id()) { | |
272 assert(thread->is_deopt_suspend(), "lost suspension"); | |
273 return; | |
274 } | |
275 | |
276 // We are at a safepoint so the target thread can only be | |
277 // in 4 states: | |
278 // blocked - no problem | |
279 // blocked_trans - no problem (i.e. could have woken up from blocked | |
280 // during a safepoint). | |
281 // native - register window pc patching race | |
282 // native_trans - momentary state | |
283 // | |
284 // We could just wait out a thread in native_trans to block. | |
285 // Then we'd have all the issues that the safepoint code has as to | |
286 // whether to spin or block. It isn't worth it. Just treat it like | |
287 // native and be done with it. | |
288 // | |
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289 // Examine the state of the thread at the start of safepoint since |
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290 // threads that were in native at the start of the safepoint could |
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291 // come to a halt during the safepoint, changing the current value |
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292 // of the safepoint_state. |
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293 JavaThreadState state = thread->safepoint_state()->orig_thread_state(); |
0 | 294 if (state == _thread_in_native || state == _thread_in_native_trans) { |
295 // Since we are at a safepoint the target thread will stop itself | |
296 // before it can return to java as long as we remain at the safepoint. | |
297 // Therefore we can put an additional request for the thread to stop | |
298 // no matter what no (like a suspend). This will cause the thread | |
299 // to notice it needs to do the deopt on its own once it leaves native. | |
300 // | |
301 // The only reason we must do this is because on machine with register | |
302 // windows we have a race with patching the return address and the | |
303 // window coming live as the thread returns to the Java code (but still | |
304 // in native mode) and then blocks. It is only this top most frame | |
305 // that is at risk. So in truth we could add an additional check to | |
306 // see if this frame is one that is at risk. | |
307 RegisterMap map(thread, false); | |
308 frame at_risk = thread->last_frame().sender(&map); | |
309 if (id() == at_risk.id()) { | |
310 thread->set_must_deopt_id(id()); | |
311 thread->set_deopt_suspend(); | |
312 return; | |
313 } | |
314 } | |
315 } // NeedsDeoptSuspend | |
316 | |
317 | |
1204 | 318 // If the call site is a MethodHandle call site use the MH deopt |
319 // handler. | |
320 address deopt = nm->is_method_handle_return(pc()) ? | |
321 nm->deopt_mh_handler_begin() : | |
322 nm->deopt_handler_begin(); | |
323 | |
0 | 324 // Save the original pc before we patch in the new one |
325 nm->set_original_pc(this, pc()); | |
326 patch_pc(thread, deopt); | |
1204 | 327 |
0 | 328 #ifdef ASSERT |
329 { | |
330 RegisterMap map(thread, false); | |
331 frame check = thread->last_frame(); | |
332 while (id() != check.id()) { | |
333 check = check.sender(&map); | |
334 } | |
335 assert(check.is_deoptimized_frame(), "missed deopt"); | |
336 } | |
337 #endif // ASSERT | |
338 } | |
339 | |
340 frame frame::java_sender() const { | |
341 RegisterMap map(JavaThread::current(), false); | |
342 frame s; | |
343 for (s = sender(&map); !(s.is_java_frame() || s.is_first_frame()); s = s.sender(&map)) ; | |
344 guarantee(s.is_java_frame(), "tried to get caller of first java frame"); | |
345 return s; | |
346 } | |
347 | |
348 frame frame::real_sender(RegisterMap* map) const { | |
349 frame result = sender(map); | |
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350 while (result.is_runtime_frame() || |
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351 result.is_ricochet_frame()) { |
0 | 352 result = result.sender(map); |
353 } | |
354 return result; | |
355 } | |
356 | |
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357 frame frame::sender_for_ricochet_frame(RegisterMap* map) const { |
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358 assert(is_ricochet_frame(), ""); |
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359 return MethodHandles::ricochet_frame_sender(*this, map); |
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360 } |
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361 |
0 | 362 // Note: called by profiler - NOT for current thread |
363 frame frame::profile_find_Java_sender_frame(JavaThread *thread) { | |
364 // If we don't recognize this frame, walk back up the stack until we do | |
365 RegisterMap map(thread, false); | |
366 frame first_java_frame = frame(); | |
367 | |
368 // Find the first Java frame on the stack starting with input frame | |
369 if (is_java_frame()) { | |
370 // top frame is compiled frame or deoptimized frame | |
371 first_java_frame = *this; | |
372 } else if (safe_for_sender(thread)) { | |
373 for (frame sender_frame = sender(&map); | |
374 sender_frame.safe_for_sender(thread) && !sender_frame.is_first_frame(); | |
375 sender_frame = sender_frame.sender(&map)) { | |
376 if (sender_frame.is_java_frame()) { | |
377 first_java_frame = sender_frame; | |
378 break; | |
379 } | |
380 } | |
381 } | |
382 return first_java_frame; | |
383 } | |
384 | |
385 // Interpreter frames | |
386 | |
387 | |
388 void frame::interpreter_frame_set_locals(intptr_t* locs) { | |
389 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
390 *interpreter_frame_locals_addr() = locs; | |
391 } | |
392 | |
393 methodOop frame::interpreter_frame_method() const { | |
394 assert(is_interpreted_frame(), "interpreted frame expected"); | |
395 methodOop m = *interpreter_frame_method_addr(); | |
396 assert(m->is_perm(), "bad methodOop in interpreter frame"); | |
397 assert(m->is_method(), "not a methodOop"); | |
398 return m; | |
399 } | |
400 | |
401 void frame::interpreter_frame_set_method(methodOop method) { | |
402 assert(is_interpreted_frame(), "interpreted frame expected"); | |
403 *interpreter_frame_method_addr() = method; | |
404 } | |
405 | |
406 void frame::interpreter_frame_set_bcx(intptr_t bcx) { | |
407 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
408 if (ProfileInterpreter) { | |
409 bool formerly_bci = is_bci(interpreter_frame_bcx()); | |
410 bool is_now_bci = is_bci(bcx); | |
411 *interpreter_frame_bcx_addr() = bcx; | |
412 | |
413 intptr_t mdx = interpreter_frame_mdx(); | |
414 | |
415 if (mdx != 0) { | |
416 if (formerly_bci) { | |
417 if (!is_now_bci) { | |
418 // The bcx was just converted from bci to bcp. | |
419 // Convert the mdx in parallel. | |
420 methodDataOop mdo = interpreter_frame_method()->method_data(); | |
421 assert(mdo != NULL, ""); | |
422 int mdi = mdx - 1; // We distinguish valid mdi from zero by adding one. | |
423 address mdp = mdo->di_to_dp(mdi); | |
424 interpreter_frame_set_mdx((intptr_t)mdp); | |
425 } | |
426 } else { | |
427 if (is_now_bci) { | |
428 // The bcx was just converted from bcp to bci. | |
429 // Convert the mdx in parallel. | |
430 methodDataOop mdo = interpreter_frame_method()->method_data(); | |
431 assert(mdo != NULL, ""); | |
432 int mdi = mdo->dp_to_di((address)mdx); | |
433 interpreter_frame_set_mdx((intptr_t)mdi + 1); // distinguish valid from 0. | |
434 } | |
435 } | |
436 } | |
437 } else { | |
438 *interpreter_frame_bcx_addr() = bcx; | |
439 } | |
440 } | |
441 | |
442 jint frame::interpreter_frame_bci() const { | |
443 assert(is_interpreted_frame(), "interpreted frame expected"); | |
444 intptr_t bcx = interpreter_frame_bcx(); | |
445 return is_bci(bcx) ? bcx : interpreter_frame_method()->bci_from((address)bcx); | |
446 } | |
447 | |
448 void frame::interpreter_frame_set_bci(jint bci) { | |
449 assert(is_interpreted_frame(), "interpreted frame expected"); | |
450 assert(!is_bci(interpreter_frame_bcx()), "should not set bci during GC"); | |
451 interpreter_frame_set_bcx((intptr_t)interpreter_frame_method()->bcp_from(bci)); | |
452 } | |
453 | |
454 address frame::interpreter_frame_bcp() const { | |
455 assert(is_interpreted_frame(), "interpreted frame expected"); | |
456 intptr_t bcx = interpreter_frame_bcx(); | |
457 return is_bci(bcx) ? interpreter_frame_method()->bcp_from(bcx) : (address)bcx; | |
458 } | |
459 | |
460 void frame::interpreter_frame_set_bcp(address bcp) { | |
461 assert(is_interpreted_frame(), "interpreted frame expected"); | |
462 assert(!is_bci(interpreter_frame_bcx()), "should not set bcp during GC"); | |
463 interpreter_frame_set_bcx((intptr_t)bcp); | |
464 } | |
465 | |
466 void frame::interpreter_frame_set_mdx(intptr_t mdx) { | |
467 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
468 assert(ProfileInterpreter, "must be profiling interpreter"); | |
469 *interpreter_frame_mdx_addr() = mdx; | |
470 } | |
471 | |
472 address frame::interpreter_frame_mdp() const { | |
473 assert(ProfileInterpreter, "must be profiling interpreter"); | |
474 assert(is_interpreted_frame(), "interpreted frame expected"); | |
475 intptr_t bcx = interpreter_frame_bcx(); | |
476 intptr_t mdx = interpreter_frame_mdx(); | |
477 | |
478 assert(!is_bci(bcx), "should not access mdp during GC"); | |
479 return (address)mdx; | |
480 } | |
481 | |
482 void frame::interpreter_frame_set_mdp(address mdp) { | |
483 assert(is_interpreted_frame(), "interpreted frame expected"); | |
484 if (mdp == NULL) { | |
485 // Always allow the mdp to be cleared. | |
486 interpreter_frame_set_mdx((intptr_t)mdp); | |
487 } | |
488 intptr_t bcx = interpreter_frame_bcx(); | |
489 assert(!is_bci(bcx), "should not set mdp during GC"); | |
490 interpreter_frame_set_mdx((intptr_t)mdp); | |
491 } | |
492 | |
493 BasicObjectLock* frame::next_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
494 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
495 #ifdef ASSERT | |
496 interpreter_frame_verify_monitor(current); | |
497 #endif | |
498 BasicObjectLock* next = (BasicObjectLock*) (((intptr_t*) current) + interpreter_frame_monitor_size()); | |
499 return next; | |
500 } | |
501 | |
502 BasicObjectLock* frame::previous_monitor_in_interpreter_frame(BasicObjectLock* current) const { | |
503 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
504 #ifdef ASSERT | |
505 // // This verification needs to be checked before being enabled | |
506 // interpreter_frame_verify_monitor(current); | |
507 #endif | |
508 BasicObjectLock* previous = (BasicObjectLock*) (((intptr_t*) current) - interpreter_frame_monitor_size()); | |
509 return previous; | |
510 } | |
511 | |
512 // Interpreter locals and expression stack locations. | |
513 | |
514 intptr_t* frame::interpreter_frame_local_at(int index) const { | |
515 const int n = Interpreter::local_offset_in_bytes(index)/wordSize; | |
516 return &((*interpreter_frame_locals_addr())[n]); | |
517 } | |
518 | |
519 intptr_t* frame::interpreter_frame_expression_stack_at(jint offset) const { | |
520 const int i = offset * interpreter_frame_expression_stack_direction(); | |
1506 | 521 const int n = i * Interpreter::stackElementWords; |
0 | 522 return &(interpreter_frame_expression_stack()[n]); |
523 } | |
524 | |
525 jint frame::interpreter_frame_expression_stack_size() const { | |
526 // Number of elements on the interpreter expression stack | |
527 // Callers should span by stackElementWords | |
1506 | 528 int element_size = Interpreter::stackElementWords; |
0 | 529 if (frame::interpreter_frame_expression_stack_direction() < 0) { |
530 return (interpreter_frame_expression_stack() - | |
531 interpreter_frame_tos_address() + 1)/element_size; | |
532 } else { | |
533 return (interpreter_frame_tos_address() - | |
534 interpreter_frame_expression_stack() + 1)/element_size; | |
535 } | |
536 } | |
537 | |
538 | |
539 // (frame::interpreter_frame_sender_sp accessor is in frame_<arch>.cpp) | |
540 | |
541 const char* frame::print_name() const { | |
542 if (is_native_frame()) return "Native"; | |
543 if (is_interpreted_frame()) return "Interpreted"; | |
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544 if (is_ricochet_frame()) return "Ricochet"; |
0 | 545 if (is_compiled_frame()) { |
546 if (is_deoptimized_frame()) return "Deoptimized"; | |
547 return "Compiled"; | |
548 } | |
549 if (sp() == NULL) return "Empty"; | |
550 return "C"; | |
551 } | |
552 | |
553 void frame::print_value_on(outputStream* st, JavaThread *thread) const { | |
554 NOT_PRODUCT(address begin = pc()-40;) | |
555 NOT_PRODUCT(address end = NULL;) | |
556 | |
557 st->print("%s frame (sp=" INTPTR_FORMAT " unextended sp=" INTPTR_FORMAT, print_name(), sp(), unextended_sp()); | |
558 if (sp() != NULL) | |
559 st->print(", fp=" INTPTR_FORMAT ", pc=" INTPTR_FORMAT, fp(), pc()); | |
560 | |
561 if (StubRoutines::contains(pc())) { | |
562 st->print_cr(")"); | |
563 st->print("("); | |
564 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
565 st->print("~Stub::%s", desc->name()); | |
566 NOT_PRODUCT(begin = desc->begin(); end = desc->end();) | |
567 } else if (Interpreter::contains(pc())) { | |
568 st->print_cr(")"); | |
569 st->print("("); | |
570 InterpreterCodelet* desc = Interpreter::codelet_containing(pc()); | |
571 if (desc != NULL) { | |
572 st->print("~"); | |
573 desc->print(); | |
574 NOT_PRODUCT(begin = desc->code_begin(); end = desc->code_end();) | |
575 } else { | |
576 st->print("~interpreter"); | |
577 } | |
578 } | |
579 st->print_cr(")"); | |
580 | |
581 if (_cb != NULL) { | |
582 st->print(" "); | |
583 _cb->print_value_on(st); | |
584 st->cr(); | |
585 #ifndef PRODUCT | |
586 if (end == NULL) { | |
1748 | 587 begin = _cb->code_begin(); |
588 end = _cb->code_end(); | |
0 | 589 } |
590 #endif | |
591 } | |
592 NOT_PRODUCT(if (WizardMode && Verbose) Disassembler::decode(begin, end);) | |
593 } | |
594 | |
595 | |
596 void frame::print_on(outputStream* st) const { | |
597 print_value_on(st,NULL); | |
598 if (is_interpreted_frame()) { | |
599 interpreter_frame_print_on(st); | |
600 } | |
601 } | |
602 | |
603 | |
604 void frame::interpreter_frame_print_on(outputStream* st) const { | |
605 #ifndef PRODUCT | |
606 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
607 jint i; | |
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608 st->print_cr(" - sp = " INTPTR_FORMAT, sp()); |
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609 // expressions |
0 | 610 for (i = interpreter_frame_expression_stack_size() - 1; i >= 0; --i ) { |
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611 intptr_t* x = interpreter_frame_expression_stack_at(i); |
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612 st->print(" - stack at " INTPTR_FORMAT " = " INTPTR_FORMAT, x, *x); |
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613 st->fill_to(70); |
0 | 614 st->print_cr("; #%d", i); |
615 } | |
616 // locks for synchronization | |
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617 st->print_cr(" - monitorend = " INTPTR_FORMAT, interpreter_frame_monitor_end()); |
0 | 618 for (BasicObjectLock* current = interpreter_frame_monitor_end(); |
619 current < interpreter_frame_monitor_begin(); | |
620 current = next_monitor_in_interpreter_frame(current)) { | |
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621 st->print (" - lock at " INTPTR_FORMAT " = ", current->lock()); |
0 | 622 current->lock()->print_on(st); |
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623 st->cr(); |
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624 st->print (" - obj at " INTPTR_FORMAT " = " INTPTR_FORMAT " ", current->obj_addr(), *current->obj_addr()); |
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625 current->obj()->print_value_on(st); |
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626 st->cr(); |
0 | 627 } |
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628 st->print_cr(" - monitorbegin = " INTPTR_FORMAT, interpreter_frame_monitor_begin()); |
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629 |
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630 // bcp/bcx |
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631 st->print (" - bcp at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_bcx_addr(), interpreter_frame_bcp()); |
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632 st->fill_to(70); |
0 | 633 st->print_cr("; @%d", interpreter_frame_bci()); |
634 // locals | |
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635 st->print_cr(" - locals at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_locals_addr(), *interpreter_frame_locals_addr()); |
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636 // constant pool cache |
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637 st->print_cr(" - constant pool at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_cache_addr(), *interpreter_frame_cache_addr()); |
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638 // method data |
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639 st->print_cr(" - method data at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_mdx_addr(), *interpreter_frame_mdx_addr()); |
0 | 640 // method |
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641 st->print (" - method at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_method_addr(), *interpreter_frame_method_addr()); |
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642 st->fill_to(70); |
0 | 643 st->print("; "); |
644 interpreter_frame_method()->print_name(st); | |
645 st->cr(); | |
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646 // last sp |
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647 st->print_cr(" - last sp at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_last_sp_addr(), *interpreter_frame_last_sp_addr()); |
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648 // sender sp |
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649 st->print_cr(" - sender sp at " INTPTR_FORMAT " = " INTPTR_FORMAT, interpreter_frame_sender_sp_addr(), *interpreter_frame_sender_sp_addr()); |
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650 // old fp |
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651 st->print_cr(" - old fp at " INTPTR_FORMAT " = " INTPTR_FORMAT, link_addr(), *link_addr()); |
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652 // return address |
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653 st->print_cr(" - return pc at " INTPTR_FORMAT " = " INTPTR_FORMAT, sender_pc_addr(), *sender_pc_addr()); |
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654 |
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655 // locals |
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656 for (i = interpreter_frame_method()->max_locals() - 1; i >= 0; i--) { |
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657 intptr_t* x = interpreter_frame_local_at(i); |
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658 st->print (" - local at " INTPTR_FORMAT " = " INTPTR_FORMAT, x, *x); |
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659 st->fill_to(70); |
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660 st->print_cr("; #%d", i); |
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661 } |
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662 |
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663 // fp |
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664 st->print_cr(" - fp = " INTPTR_FORMAT, fp()); |
0 | 665 #endif |
666 } | |
667 | |
668 // Return whether the frame is in the VM or os indicating a Hotspot problem. | |
669 // Otherwise, it's likely a bug in the native library that the Java code calls, | |
670 // hopefully indicating where to submit bugs. | |
671 static void print_C_frame(outputStream* st, char* buf, int buflen, address pc) { | |
672 // C/C++ frame | |
673 bool in_vm = os::address_is_in_vm(pc); | |
674 st->print(in_vm ? "V" : "C"); | |
675 | |
676 int offset; | |
677 bool found; | |
678 | |
679 // libname | |
680 found = os::dll_address_to_library_name(pc, buf, buflen, &offset); | |
681 if (found) { | |
682 // skip directory names | |
683 const char *p1, *p2; | |
684 p1 = buf; | |
685 int len = (int)strlen(os::file_separator()); | |
686 while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; | |
687 st->print(" [%s+0x%x]", p1, offset); | |
688 } else { | |
689 st->print(" " PTR_FORMAT, pc); | |
690 } | |
691 | |
692 // function name - os::dll_address_to_function_name() may return confusing | |
693 // names if pc is within jvm.dll or libjvm.so, because JVM only has | |
694 // JVM_xxxx and a few other symbols in the dynamic symbol table. Do this | |
695 // only for native libraries. | |
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696 if (!in_vm || Decoder::can_decode_C_frame_in_vm()) { |
0 | 697 found = os::dll_address_to_function_name(pc, buf, buflen, &offset); |
698 | |
699 if (found) { | |
700 st->print(" %s+0x%x", buf, offset); | |
701 } | |
702 } | |
703 } | |
704 | |
705 // frame::print_on_error() is called by fatal error handler. Notice that we may | |
706 // crash inside this function if stack frame is corrupted. The fatal error | |
707 // handler can catch and handle the crash. Here we assume the frame is valid. | |
708 // | |
709 // First letter indicates type of the frame: | |
710 // J: Java frame (compiled) | |
711 // j: Java frame (interpreted) | |
712 // V: VM frame (C/C++) | |
713 // v: Other frames running VM generated code (e.g. stubs, adapters, etc.) | |
714 // C: C/C++ frame | |
715 // | |
716 // We don't need detailed frame type as that in frame::print_name(). "C" | |
717 // suggests the problem is in user lib; everything else is likely a VM bug. | |
718 | |
719 void frame::print_on_error(outputStream* st, char* buf, int buflen, bool verbose) const { | |
720 if (_cb != NULL) { | |
721 if (Interpreter::contains(pc())) { | |
722 methodOop m = this->interpreter_frame_method(); | |
723 if (m != NULL) { | |
724 m->name_and_sig_as_C_string(buf, buflen); | |
725 st->print("j %s", buf); | |
726 st->print("+%d", this->interpreter_frame_bci()); | |
727 } else { | |
728 st->print("j " PTR_FORMAT, pc()); | |
729 } | |
730 } else if (StubRoutines::contains(pc())) { | |
731 StubCodeDesc* desc = StubCodeDesc::desc_for(pc()); | |
732 if (desc != NULL) { | |
733 st->print("v ~StubRoutines::%s", desc->name()); | |
734 } else { | |
735 st->print("v ~StubRoutines::" PTR_FORMAT, pc()); | |
736 } | |
737 } else if (_cb->is_buffer_blob()) { | |
738 st->print("v ~BufferBlob::%s", ((BufferBlob *)_cb)->name()); | |
739 } else if (_cb->is_nmethod()) { | |
740 methodOop m = ((nmethod *)_cb)->method(); | |
741 if (m != NULL) { | |
742 m->name_and_sig_as_C_string(buf, buflen); | |
743 st->print("J %s", buf); | |
744 } else { | |
745 st->print("J " PTR_FORMAT, pc()); | |
746 } | |
747 } else if (_cb->is_runtime_stub()) { | |
748 st->print("v ~RuntimeStub::%s", ((RuntimeStub *)_cb)->name()); | |
749 } else if (_cb->is_deoptimization_stub()) { | |
750 st->print("v ~DeoptimizationBlob"); | |
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751 } else if (_cb->is_ricochet_stub()) { |
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752 st->print("v ~RichochetBlob"); |
0 | 753 } else if (_cb->is_exception_stub()) { |
754 st->print("v ~ExceptionBlob"); | |
755 } else if (_cb->is_safepoint_stub()) { | |
756 st->print("v ~SafepointBlob"); | |
757 } else { | |
758 st->print("v blob " PTR_FORMAT, pc()); | |
759 } | |
760 } else { | |
761 print_C_frame(st, buf, buflen, pc()); | |
762 } | |
763 } | |
764 | |
765 | |
766 /* | |
767 The interpreter_frame_expression_stack_at method in the case of SPARC needs the | |
768 max_stack value of the method in order to compute the expression stack address. | |
769 It uses the methodOop in order to get the max_stack value but during GC this | |
770 methodOop value saved on the frame is changed by reverse_and_push and hence cannot | |
771 be used. So we save the max_stack value in the FrameClosure object and pass it | |
772 down to the interpreter_frame_expression_stack_at method | |
773 */ | |
774 class InterpreterFrameClosure : public OffsetClosure { | |
775 private: | |
776 frame* _fr; | |
777 OopClosure* _f; | |
778 int _max_locals; | |
779 int _max_stack; | |
780 | |
781 public: | |
782 InterpreterFrameClosure(frame* fr, int max_locals, int max_stack, | |
783 OopClosure* f) { | |
784 _fr = fr; | |
785 _max_locals = max_locals; | |
786 _max_stack = max_stack; | |
787 _f = f; | |
788 } | |
789 | |
790 void offset_do(int offset) { | |
791 oop* addr; | |
792 if (offset < _max_locals) { | |
793 addr = (oop*) _fr->interpreter_frame_local_at(offset); | |
794 assert((intptr_t*)addr >= _fr->sp(), "must be inside the frame"); | |
795 _f->do_oop(addr); | |
796 } else { | |
797 addr = (oop*) _fr->interpreter_frame_expression_stack_at((offset - _max_locals)); | |
798 // In case of exceptions, the expression stack is invalid and the esp will be reset to express | |
799 // this condition. Therefore, we call f only if addr is 'inside' the stack (i.e., addr >= esp for Intel). | |
800 bool in_stack; | |
801 if (frame::interpreter_frame_expression_stack_direction() > 0) { | |
802 in_stack = (intptr_t*)addr <= _fr->interpreter_frame_tos_address(); | |
803 } else { | |
804 in_stack = (intptr_t*)addr >= _fr->interpreter_frame_tos_address(); | |
805 } | |
806 if (in_stack) { | |
807 _f->do_oop(addr); | |
808 } | |
809 } | |
810 } | |
811 | |
812 int max_locals() { return _max_locals; } | |
813 frame* fr() { return _fr; } | |
814 }; | |
815 | |
816 | |
817 class InterpretedArgumentOopFinder: public SignatureInfo { | |
818 private: | |
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819 OopClosure* _f; // Closure to invoke |
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820 int _offset; // TOS-relative offset, decremented with each argument |
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821 bool _has_receiver; // true if the callee has a receiver |
0 | 822 frame* _fr; |
823 | |
824 void set(int size, BasicType type) { | |
825 _offset -= size; | |
826 if (type == T_OBJECT || type == T_ARRAY) oop_offset_do(); | |
827 } | |
828 | |
829 void oop_offset_do() { | |
830 oop* addr; | |
831 addr = (oop*)_fr->interpreter_frame_tos_at(_offset); | |
832 _f->do_oop(addr); | |
833 } | |
834 | |
835 public: | |
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836 InterpretedArgumentOopFinder(Symbol* signature, bool has_receiver, frame* fr, OopClosure* f) : SignatureInfo(signature), _has_receiver(has_receiver) { |
0 | 837 // compute size of arguments |
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838 int args_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
0 | 839 assert(!fr->is_interpreted_frame() || |
840 args_size <= fr->interpreter_frame_expression_stack_size(), | |
841 "args cannot be on stack anymore"); | |
842 // initialize InterpretedArgumentOopFinder | |
843 _f = f; | |
844 _fr = fr; | |
845 _offset = args_size; | |
846 } | |
847 | |
848 void oops_do() { | |
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849 if (_has_receiver) { |
0 | 850 --_offset; |
851 oop_offset_do(); | |
852 } | |
853 iterate_parameters(); | |
854 } | |
855 }; | |
856 | |
857 | |
858 // Entry frame has following form (n arguments) | |
859 // +-----------+ | |
860 // sp -> | last arg | | |
861 // +-----------+ | |
862 // : ::: : | |
863 // +-----------+ | |
864 // (sp+n)->| first arg| | |
865 // +-----------+ | |
866 | |
867 | |
868 | |
869 // visits and GC's all the arguments in entry frame | |
870 class EntryFrameOopFinder: public SignatureInfo { | |
871 private: | |
872 bool _is_static; | |
873 int _offset; | |
874 frame* _fr; | |
875 OopClosure* _f; | |
876 | |
877 void set(int size, BasicType type) { | |
878 assert (_offset >= 0, "illegal offset"); | |
879 if (type == T_OBJECT || type == T_ARRAY) oop_at_offset_do(_offset); | |
880 _offset -= size; | |
881 } | |
882 | |
883 void oop_at_offset_do(int offset) { | |
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884 assert (offset >= 0, "illegal offset"); |
0 | 885 oop* addr = (oop*) _fr->entry_frame_argument_at(offset); |
886 _f->do_oop(addr); | |
887 } | |
888 | |
889 public: | |
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890 EntryFrameOopFinder(frame* frame, Symbol* signature, bool is_static) : SignatureInfo(signature) { |
0 | 891 _f = NULL; // will be set later |
892 _fr = frame; | |
893 _is_static = is_static; | |
894 _offset = ArgumentSizeComputer(signature).size() - 1; // last parameter is at index 0 | |
895 } | |
896 | |
897 void arguments_do(OopClosure* f) { | |
898 _f = f; | |
899 if (!_is_static) oop_at_offset_do(_offset+1); // do the receiver | |
900 iterate_parameters(); | |
901 } | |
902 | |
903 }; | |
904 | |
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905 oop* frame::interpreter_callee_receiver_addr(Symbol* signature) { |
0 | 906 ArgumentSizeComputer asc(signature); |
907 int size = asc.size(); | |
908 return (oop *)interpreter_frame_tos_at(size); | |
909 } | |
910 | |
911 | |
912 void frame::oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache) { | |
913 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
914 assert(map != NULL, "map must be set"); | |
915 Thread *thread = Thread::current(); | |
916 methodHandle m (thread, interpreter_frame_method()); | |
917 jint bci = interpreter_frame_bci(); | |
918 | |
919 assert(Universe::heap()->is_in(m()), "must be valid oop"); | |
920 assert(m->is_method(), "checking frame value"); | |
921 assert((m->is_native() && bci == 0) || (!m->is_native() && bci >= 0 && bci < m->code_size()), "invalid bci value"); | |
922 | |
923 // Handle the monitor elements in the activation | |
924 for ( | |
925 BasicObjectLock* current = interpreter_frame_monitor_end(); | |
926 current < interpreter_frame_monitor_begin(); | |
927 current = next_monitor_in_interpreter_frame(current) | |
928 ) { | |
929 #ifdef ASSERT | |
930 interpreter_frame_verify_monitor(current); | |
931 #endif | |
932 current->oops_do(f); | |
933 } | |
934 | |
935 // process fixed part | |
936 f->do_oop((oop*)interpreter_frame_method_addr()); | |
937 f->do_oop((oop*)interpreter_frame_cache_addr()); | |
938 | |
939 // Hmm what about the mdp? | |
940 #ifdef CC_INTERP | |
941 // Interpreter frame in the midst of a call have a methodOop within the | |
942 // object. | |
943 interpreterState istate = get_interpreterState(); | |
944 if (istate->msg() == BytecodeInterpreter::call_method) { | |
945 f->do_oop((oop*)&istate->_result._to_call._callee); | |
946 } | |
947 | |
948 #endif /* CC_INTERP */ | |
949 | |
1908 | 950 #if !defined(PPC) || defined(ZERO) |
0 | 951 if (m->is_native()) { |
952 #ifdef CC_INTERP | |
953 f->do_oop((oop*)&istate->_oop_temp); | |
954 #else | |
955 f->do_oop((oop*)( fp() + interpreter_frame_oop_temp_offset )); | |
956 #endif /* CC_INTERP */ | |
957 } | |
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958 #else // PPC |
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959 if (m->is_native() && m->is_static()) { |
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960 f->do_oop(interpreter_frame_mirror_addr()); |
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961 } |
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962 #endif // PPC |
0 | 963 |
964 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
965 | |
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966 Symbol* signature = NULL; |
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967 bool has_receiver = false; |
0 | 968 |
969 // Process a callee's arguments if we are at a call site | |
970 // (i.e., if we are at an invoke bytecode) | |
971 // This is used sometimes for calling into the VM, not for another | |
972 // interpreted or compiled frame. | |
973 if (!m->is_native()) { | |
2142 | 974 Bytecode_invoke call = Bytecode_invoke_check(m, bci); |
975 if (call.is_valid()) { | |
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976 signature = call.signature(); |
2142 | 977 has_receiver = call.has_receiver(); |
0 | 978 if (map->include_argument_oops() && |
979 interpreter_frame_expression_stack_size() > 0) { | |
980 ResourceMark rm(thread); // is this right ??? | |
981 // we are at a call site & the expression stack is not empty | |
982 // => process callee's arguments | |
983 // | |
984 // Note: The expression stack can be empty if an exception | |
605 | 985 // occurred during method resolution/execution. In all |
0 | 986 // cases we empty the expression stack completely be- |
987 // fore handling the exception (the exception handling | |
988 // code in the interpreter calls a blocking runtime | |
989 // routine which can cause this code to be executed). | |
990 // (was bug gri 7/27/98) | |
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991 oops_interpreted_arguments_do(signature, has_receiver, f); |
0 | 992 } |
993 } | |
994 } | |
995 | |
1506 | 996 InterpreterFrameClosure blk(this, max_locals, m->max_stack(), f); |
997 | |
998 // process locals & expression stack | |
999 InterpreterOopMap mask; | |
1000 if (query_oop_map_cache) { | |
1001 m->mask_for(bci, &mask); | |
0 | 1002 } else { |
1506 | 1003 OopMapCache::compute_one_oop_map(m, bci, &mask); |
0 | 1004 } |
1506 | 1005 mask.iterate_oop(&blk); |
0 | 1006 } |
1007 | |
1008 | |
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1009 void frame::oops_interpreted_arguments_do(Symbol* signature, bool has_receiver, OopClosure* f) { |
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1010 InterpretedArgumentOopFinder finder(signature, has_receiver, this, f); |
0 | 1011 finder.oops_do(); |
1012 } | |
1013 | |
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1014 void frame::oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* reg_map) { |
0 | 1015 assert(_cb != NULL, "sanity check"); |
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1016 if (_cb == SharedRuntime::ricochet_blob()) { |
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1017 oops_ricochet_do(f, reg_map); |
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1018 } |
0 | 1019 if (_cb->oop_maps() != NULL) { |
1020 OopMapSet::oops_do(this, reg_map, f); | |
1021 | |
1022 // Preserve potential arguments for a callee. We handle this by dispatching | |
1023 // on the codeblob. For c2i, we do | |
1024 if (reg_map->include_argument_oops()) { | |
1025 _cb->preserve_callee_argument_oops(*this, reg_map, f); | |
1026 } | |
1027 } | |
1028 // In cases where perm gen is collected, GC will want to mark | |
1029 // oops referenced from nmethods active on thread stacks so as to | |
1030 // prevent them from being collected. However, this visit should be | |
1031 // restricted to certain phases of the collection only. The | |
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1032 // closure decides how it wants nmethods to be traced. |
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1033 if (cf != NULL) |
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1034 cf->do_code_blob(_cb); |
0 | 1035 } |
1036 | |
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1037 void frame::oops_ricochet_do(OopClosure* f, const RegisterMap* map) { |
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1038 assert(is_ricochet_frame(), ""); |
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1039 MethodHandles::ricochet_frame_oops_do(*this, f, map); |
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1040 } |
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1041 |
0 | 1042 class CompiledArgumentOopFinder: public SignatureInfo { |
1043 protected: | |
1044 OopClosure* _f; | |
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1045 int _offset; // the current offset, incremented with each argument |
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1046 bool _has_receiver; // true if the callee has a receiver |
0 | 1047 frame _fr; |
1048 RegisterMap* _reg_map; | |
1049 int _arg_size; | |
1050 VMRegPair* _regs; // VMReg list of arguments | |
1051 | |
1052 void set(int size, BasicType type) { | |
1053 if (type == T_OBJECT || type == T_ARRAY) handle_oop_offset(); | |
1054 _offset += size; | |
1055 } | |
1056 | |
1057 virtual void handle_oop_offset() { | |
1058 // Extract low order register number from register array. | |
1059 // In LP64-land, the high-order bits are valid but unhelpful. | |
1060 VMReg reg = _regs[_offset].first(); | |
1061 oop *loc = _fr.oopmapreg_to_location(reg, _reg_map); | |
1062 _f->do_oop(loc); | |
1063 } | |
1064 | |
1065 public: | |
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1066 CompiledArgumentOopFinder(Symbol* signature, bool has_receiver, OopClosure* f, frame fr, const RegisterMap* reg_map) |
0 | 1067 : SignatureInfo(signature) { |
1068 | |
1069 // initialize CompiledArgumentOopFinder | |
1070 _f = f; | |
1071 _offset = 0; | |
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1072 _has_receiver = has_receiver; |
0 | 1073 _fr = fr; |
1074 _reg_map = (RegisterMap*)reg_map; | |
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1075 _arg_size = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0); |
0 | 1076 |
1077 int arg_size; | |
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1078 _regs = SharedRuntime::find_callee_arguments(signature, has_receiver, &arg_size); |
0 | 1079 assert(arg_size == _arg_size, "wrong arg size"); |
1080 } | |
1081 | |
1082 void oops_do() { | |
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1083 if (_has_receiver) { |
0 | 1084 handle_oop_offset(); |
1085 _offset++; | |
1086 } | |
1087 iterate_parameters(); | |
1088 } | |
1089 }; | |
1090 | |
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1091 void frame::oops_compiled_arguments_do(Symbol* signature, bool has_receiver, const RegisterMap* reg_map, OopClosure* f) { |
0 | 1092 ResourceMark rm; |
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1093 CompiledArgumentOopFinder finder(signature, has_receiver, f, *this, reg_map); |
0 | 1094 finder.oops_do(); |
1095 } | |
1096 | |
1097 | |
1098 // Get receiver out of callers frame, i.e. find parameter 0 in callers | |
1099 // frame. Consult ADLC for where parameter 0 is to be found. Then | |
1100 // check local reg_map for it being a callee-save register or argument | |
1101 // register, both of which are saved in the local frame. If not found | |
1102 // there, it must be an in-stack argument of the caller. | |
1103 // Note: caller.sp() points to callee-arguments | |
1104 oop frame::retrieve_receiver(RegisterMap* reg_map) { | |
1105 frame caller = *this; | |
1106 | |
1107 // First consult the ADLC on where it puts parameter 0 for this signature. | |
1108 VMReg reg = SharedRuntime::name_for_receiver(); | |
1109 oop r = *caller.oopmapreg_to_location(reg, reg_map); | |
1110 assert( Universe::heap()->is_in_or_null(r), "bad receiver" ); | |
1111 return r; | |
1112 } | |
1113 | |
1114 | |
1115 oop* frame::oopmapreg_to_location(VMReg reg, const RegisterMap* reg_map) const { | |
1116 if(reg->is_reg()) { | |
1117 // If it is passed in a register, it got spilled in the stub frame. | |
1118 return (oop *)reg_map->location(reg); | |
1119 } else { | |
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1120 int sp_offset_in_bytes = reg->reg2stack() * VMRegImpl::stack_slot_size; |
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1121 return (oop*)(((address)unextended_sp()) + sp_offset_in_bytes); |
0 | 1122 } |
1123 } | |
1124 | |
2019 | 1125 BasicLock* frame::get_native_monitor() { |
1126 nmethod* nm = (nmethod*)_cb; | |
1127 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
1128 "Should not call this unless it's a native nmethod"); | |
1129 int byte_offset = in_bytes(nm->native_basic_lock_sp_offset()); | |
0 | 1130 assert(byte_offset >= 0, "should not see invalid offset"); |
1131 return (BasicLock*) &sp()[byte_offset / wordSize]; | |
1132 } | |
1133 | |
2019 | 1134 oop frame::get_native_receiver() { |
1135 nmethod* nm = (nmethod*)_cb; | |
1136 assert(_cb != NULL && _cb->is_nmethod() && nm->method()->is_native(), | |
1137 "Should not call this unless it's a native nmethod"); | |
1138 int byte_offset = in_bytes(nm->native_receiver_sp_offset()); | |
0 | 1139 assert(byte_offset >= 0, "should not see invalid offset"); |
1140 oop owner = ((oop*) sp())[byte_offset / wordSize]; | |
1141 assert( Universe::heap()->is_in(owner), "bad receiver" ); | |
1142 return owner; | |
1143 } | |
1144 | |
1145 void frame::oops_entry_do(OopClosure* f, const RegisterMap* map) { | |
1146 assert(map != NULL, "map must be set"); | |
1147 if (map->include_argument_oops()) { | |
1148 // must collect argument oops, as nobody else is doing it | |
1149 Thread *thread = Thread::current(); | |
1150 methodHandle m (thread, entry_frame_call_wrapper()->callee_method()); | |
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1151 EntryFrameOopFinder finder(this, m->signature(), m->is_static()); |
0 | 1152 finder.arguments_do(f); |
1153 } | |
1154 // Traverse the Handle Block saved in the entry frame | |
1155 entry_frame_call_wrapper()->oops_do(f); | |
1156 } | |
1157 | |
1158 | |
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1159 void frame::oops_do_internal(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache) { |
1119
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1160 #ifndef PRODUCT |
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1161 // simulate GC crash here to dump java thread in error report |
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1162 if (CrashGCForDumpingJavaThread) { |
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1163 char *t = NULL; |
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1164 *t = 'c'; |
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1165 } |
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1166 #endif |
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1167 if (is_interpreted_frame()) { |
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1168 oops_interpreted_do(f, map, use_interpreter_oop_map_cache); |
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1169 } else if (is_entry_frame()) { |
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1170 oops_entry_do(f, map); |
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1171 } else if (CodeCache::contains(pc())) { |
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1172 oops_code_blob_do(f, cf, map); |
1692 | 1173 #ifdef SHARK |
1174 } else if (is_fake_stub_frame()) { | |
1175 // nothing to do | |
1176 #endif // SHARK | |
0 | 1177 } else { |
1178 ShouldNotReachHere(); | |
1179 } | |
1180 } | |
1181 | |
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1182 void frame::nmethods_do(CodeBlobClosure* cf) { |
0 | 1183 if (_cb != NULL && _cb->is_nmethod()) { |
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1184 cf->do_code_blob(_cb); |
0 | 1185 } |
1186 } | |
1187 | |
1188 | |
1189 void frame::gc_prologue() { | |
1190 if (is_interpreted_frame()) { | |
1191 // set bcx to bci to become methodOop position independent during GC | |
1192 interpreter_frame_set_bcx(interpreter_frame_bci()); | |
1193 } | |
1194 } | |
1195 | |
1196 | |
1197 void frame::gc_epilogue() { | |
1198 if (is_interpreted_frame()) { | |
1199 // set bcx back to bcp for interpreter | |
1200 interpreter_frame_set_bcx((intptr_t)interpreter_frame_bcp()); | |
1201 } | |
1202 // call processor specific epilog function | |
1203 pd_gc_epilog(); | |
1204 } | |
1205 | |
1206 | |
1207 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
1208 | |
1209 void frame::CheckValueClosure::do_oop(oop* p) { | |
1210 if (CheckOopishValues && Universe::heap()->is_in_reserved(*p)) { | |
1211 warning("value @ " INTPTR_FORMAT " looks oopish (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
1212 } | |
1213 } | |
1214 frame::CheckValueClosure frame::_check_value; | |
1215 | |
1216 | |
1217 void frame::CheckOopClosure::do_oop(oop* p) { | |
1218 if (*p != NULL && !(*p)->is_oop()) { | |
1219 warning("value @ " INTPTR_FORMAT " should be an oop (" INTPTR_FORMAT ") (thread = " INTPTR_FORMAT ")", p, (address)*p, Thread::current()); | |
1220 } | |
1221 } | |
1222 frame::CheckOopClosure frame::_check_oop; | |
1223 | |
1224 void frame::check_derived_oop(oop* base, oop* derived) { | |
1225 _check_oop.do_oop(base); | |
1226 } | |
1227 | |
1228 | |
1229 void frame::ZapDeadClosure::do_oop(oop* p) { | |
1230 if (TraceZapDeadLocals) tty->print_cr("zapping @ " INTPTR_FORMAT " containing " INTPTR_FORMAT, p, (address)*p); | |
1231 // Need cast because on _LP64 the conversion to oop is ambiguous. Constant | |
1232 // can be either long or int. | |
1233 *p = (oop)(int)0xbabebabe; | |
1234 } | |
1235 frame::ZapDeadClosure frame::_zap_dead; | |
1236 | |
1237 void frame::zap_dead_locals(JavaThread* thread, const RegisterMap* map) { | |
1238 assert(thread == Thread::current(), "need to synchronize to do this to another thread"); | |
1239 // Tracing - part 1 | |
1240 if (TraceZapDeadLocals) { | |
1241 ResourceMark rm(thread); | |
1242 tty->print_cr("--------------------------------------------------------------------------------"); | |
1243 tty->print("Zapping dead locals in "); | |
1244 print_on(tty); | |
1245 tty->cr(); | |
1246 } | |
1247 // Zapping | |
1248 if (is_entry_frame ()) zap_dead_entry_locals (thread, map); | |
1249 else if (is_interpreted_frame()) zap_dead_interpreted_locals(thread, map); | |
1250 else if (is_compiled_frame()) zap_dead_compiled_locals (thread, map); | |
1251 | |
1252 else | |
1253 // could be is_runtime_frame | |
1254 // so remove error: ShouldNotReachHere(); | |
1255 ; | |
1256 // Tracing - part 2 | |
1257 if (TraceZapDeadLocals) { | |
1258 tty->cr(); | |
1259 } | |
1260 } | |
1261 | |
1262 | |
1263 void frame::zap_dead_interpreted_locals(JavaThread *thread, const RegisterMap* map) { | |
1264 // get current interpreter 'pc' | |
1265 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
1266 methodOop m = interpreter_frame_method(); | |
1267 int bci = interpreter_frame_bci(); | |
1268 | |
1269 int max_locals = m->is_native() ? m->size_of_parameters() : m->max_locals(); | |
1270 | |
1506 | 1271 // process dynamic part |
1272 InterpreterFrameClosure value_blk(this, max_locals, m->max_stack(), | |
1273 &_check_value); | |
1274 InterpreterFrameClosure oop_blk(this, max_locals, m->max_stack(), | |
1275 &_check_oop ); | |
1276 InterpreterFrameClosure dead_blk(this, max_locals, m->max_stack(), | |
1277 &_zap_dead ); | |
0 | 1278 |
1506 | 1279 // get frame map |
1280 InterpreterOopMap mask; | |
1281 m->mask_for(bci, &mask); | |
1282 mask.iterate_all( &oop_blk, &value_blk, &dead_blk); | |
0 | 1283 } |
1284 | |
1285 | |
1286 void frame::zap_dead_compiled_locals(JavaThread* thread, const RegisterMap* reg_map) { | |
1287 | |
1288 ResourceMark rm(thread); | |
1289 assert(_cb != NULL, "sanity check"); | |
1290 if (_cb->oop_maps() != NULL) { | |
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1291 OopMapSet::all_do(this, reg_map, &_check_oop, check_derived_oop, &_check_value); |
0 | 1292 } |
1293 } | |
1294 | |
1295 | |
1296 void frame::zap_dead_entry_locals(JavaThread*, const RegisterMap*) { | |
1297 if (TraceZapDeadLocals) warning("frame::zap_dead_entry_locals unimplemented"); | |
1298 } | |
1299 | |
1300 | |
1301 void frame::zap_dead_deoptimized_locals(JavaThread*, const RegisterMap*) { | |
1302 if (TraceZapDeadLocals) warning("frame::zap_dead_deoptimized_locals unimplemented"); | |
1303 } | |
1304 | |
1305 # endif // ENABLE_ZAP_DEAD_LOCALS | |
1306 | |
1307 void frame::verify(const RegisterMap* map) { | |
1308 // for now make sure receiver type is correct | |
1309 if (is_interpreted_frame()) { | |
1310 methodOop method = interpreter_frame_method(); | |
1311 guarantee(method->is_method(), "method is wrong in frame::verify"); | |
1312 if (!method->is_static()) { | |
1313 // fetch the receiver | |
1314 oop* p = (oop*) interpreter_frame_local_at(0); | |
1315 // make sure we have the right receiver type | |
1316 } | |
1317 } | |
1318 COMPILER2_PRESENT(assert(DerivedPointerTable::is_empty(), "must be empty before verify");) | |
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1319 oops_do_internal(&VerifyOopClosure::verify_oop, NULL, (RegisterMap*)map, false); |
0 | 1320 } |
1321 | |
1322 | |
1323 #ifdef ASSERT | |
1324 bool frame::verify_return_pc(address x) { | |
1325 if (StubRoutines::returns_to_call_stub(x)) { | |
1326 return true; | |
1327 } | |
1328 if (CodeCache::contains(x)) { | |
1329 return true; | |
1330 } | |
1331 if (Interpreter::contains(x)) { | |
1332 return true; | |
1333 } | |
1334 return false; | |
1335 } | |
1336 #endif | |
1337 | |
1338 | |
1339 #ifdef ASSERT | |
1340 void frame::interpreter_frame_verify_monitor(BasicObjectLock* value) const { | |
1341 assert(is_interpreted_frame(), "Not an interpreted frame"); | |
1342 // verify that the value is in the right part of the frame | |
1343 address low_mark = (address) interpreter_frame_monitor_end(); | |
1344 address high_mark = (address) interpreter_frame_monitor_begin(); | |
1345 address current = (address) value; | |
1346 | |
1347 const int monitor_size = frame::interpreter_frame_monitor_size(); | |
1348 guarantee((high_mark - current) % monitor_size == 0 , "Misaligned top of BasicObjectLock*"); | |
1349 guarantee( high_mark > current , "Current BasicObjectLock* higher than high_mark"); | |
1350 | |
1351 guarantee((current - low_mark) % monitor_size == 0 , "Misaligned bottom of BasicObjectLock*"); | |
1352 guarantee( current >= low_mark , "Current BasicObjectLock* below than low_mark"); | |
1353 } | |
3336
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1354 |
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1355 |
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1356 void frame::describe(FrameValues& values, int frame_no) { |
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1357 if (is_entry_frame() || is_compiled_frame() || is_interpreted_frame() || is_native_frame()) { |
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1358 // Label values common to most frames |
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1359 values.describe(-1, unextended_sp(), err_msg("unextended_sp for #%d", frame_no)); |
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1360 values.describe(-1, sp(), err_msg("sp for #%d", frame_no)); |
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1361 if (is_compiled_frame()) { |
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1362 values.describe(-1, sp() + _cb->frame_size(), err_msg("computed fp for #%d", frame_no)); |
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1363 } else { |
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1364 values.describe(-1, fp(), err_msg("fp for #%d", frame_no)); |
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1365 } |
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1366 } |
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1367 if (is_interpreted_frame()) { |
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1368 methodOop m = interpreter_frame_method(); |
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1369 int bci = interpreter_frame_bci(); |
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1370 |
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1371 // Label the method and current bci |
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1372 values.describe(-1, MAX2(sp(), fp()), |
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1373 FormatBuffer<1024>("#%d method %s @ %d", frame_no, m->name_and_sig_as_C_string(), bci), 2); |
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1374 values.describe(-1, MAX2(sp(), fp()), |
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1375 err_msg("- %d locals %d max stack", m->max_locals(), m->max_stack()), 1); |
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1376 if (m->max_locals() > 0) { |
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1377 intptr_t* l0 = interpreter_frame_local_at(0); |
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1378 intptr_t* ln = interpreter_frame_local_at(m->max_locals() - 1); |
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1379 values.describe(-1, MAX2(l0, ln), err_msg("locals for #%d", frame_no), 1); |
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1380 // Report each local and mark as owned by this frame |
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1381 for (int l = 0; l < m->max_locals(); l++) { |
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1382 intptr_t* l0 = interpreter_frame_local_at(l); |
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1383 values.describe(frame_no, l0, err_msg("local %d", l)); |
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1384 } |
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1385 } |
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1386 |
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1387 // Compute the actual expression stack size |
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1388 InterpreterOopMap mask; |
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1389 OopMapCache::compute_one_oop_map(m, bci, &mask); |
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1390 intptr_t* tos = NULL; |
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1391 // Report each stack element and mark as owned by this frame |
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1392 for (int e = 0; e < mask.expression_stack_size(); e++) { |
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1393 tos = MAX2(tos, interpreter_frame_expression_stack_at(e)); |
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1394 values.describe(frame_no, interpreter_frame_expression_stack_at(e), |
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1395 err_msg("stack %d", e)); |
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1396 } |
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1397 if (tos != NULL) { |
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1398 values.describe(-1, tos, err_msg("expression stack for #%d", frame_no), 1); |
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1399 } |
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1400 if (interpreter_frame_monitor_begin() != interpreter_frame_monitor_end()) { |
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1401 values.describe(frame_no, (intptr_t*)interpreter_frame_monitor_begin(), "monitors begin"); |
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1402 values.describe(frame_no, (intptr_t*)interpreter_frame_monitor_end(), "monitors end"); |
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1403 } |
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1404 } else if (is_entry_frame()) { |
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1405 // For now just label the frame |
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1406 values.describe(-1, MAX2(sp(), fp()), err_msg("#%d entry frame", frame_no), 2); |
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1407 } else if (is_compiled_frame()) { |
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1408 // For now just label the frame |
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1409 nmethod* nm = cb()->as_nmethod_or_null(); |
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1410 values.describe(-1, MAX2(sp(), fp()), |
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1411 FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for method %s%s", frame_no, |
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1412 nm, nm->method()->name_and_sig_as_C_string(), |
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1413 is_deoptimized_frame() ? " (deoptimized" : ""), 2); |
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1414 } else if (is_native_frame()) { |
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1415 // For now just label the frame |
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1416 nmethod* nm = cb()->as_nmethod_or_null(); |
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1417 values.describe(-1, MAX2(sp(), fp()), |
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1418 FormatBuffer<1024>("#%d nmethod " INTPTR_FORMAT " for native method %s", frame_no, |
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1419 nm, nm->method()->name_and_sig_as_C_string()), 2); |
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1420 } |
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1421 describe_pd(values, frame_no); |
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1422 } |
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1423 |
0 | 1424 #endif |
1425 | |
1426 | |
1427 //----------------------------------------------------------------------------------- | |
1428 // StackFrameStream implementation | |
1429 | |
1430 StackFrameStream::StackFrameStream(JavaThread *thread, bool update) : _reg_map(thread, update) { | |
1431 assert(thread->has_last_Java_frame(), "sanity check"); | |
1432 _fr = thread->last_frame(); | |
1433 _is_done = false; | |
1434 } | |
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1435 |
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1436 |
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1437 #ifdef ASSERT |
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1438 |
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1439 void FrameValues::describe(int owner, intptr_t* location, const char* description, int priority) { |
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1440 FrameValue fv; |
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1441 fv.location = location; |
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1442 fv.owner = owner; |
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1443 fv.priority = priority; |
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1444 fv.description = NEW_RESOURCE_ARRAY(char, strlen(description) + 1); |
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1445 strcpy(fv.description, description); |
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1446 _values.append(fv); |
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1447 } |
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1448 |
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1449 |
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1450 void FrameValues::validate() { |
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1451 _values.sort(compare); |
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1452 bool error = false; |
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1453 FrameValue prev; |
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1454 prev.owner = -1; |
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1455 for (int i = _values.length() - 1; i >= 0; i--) { |
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1456 FrameValue fv = _values.at(i); |
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1457 if (fv.owner == -1) continue; |
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1458 if (prev.owner == -1) { |
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1459 prev = fv; |
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1460 continue; |
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1461 } |
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1462 if (prev.location == fv.location) { |
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1463 if (fv.owner != prev.owner) { |
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1464 tty->print_cr("overlapping storage"); |
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1465 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT " %s", prev.location, *prev.location, prev.description); |
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1466 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT " %s", fv.location, *fv.location, fv.description); |
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1467 error = true; |
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1468 } |
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1469 } else { |
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1470 prev = fv; |
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1471 } |
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1472 } |
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1473 assert(!error, "invalid layout"); |
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1474 } |
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1475 |
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1476 |
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1477 void FrameValues::print(JavaThread* thread) { |
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1478 _values.sort(compare); |
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1479 |
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1480 // Sometimes values like the fp can be invalid values if the |
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1481 // register map wasn't updated during the walk. Trim out values |
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1482 // that aren't actually in the stack of the thread. |
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1483 int min_index = 0; |
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1484 int max_index = _values.length() - 1; |
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1485 intptr_t* v0 = _values.at(min_index).location; |
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1486 intptr_t* v1 = _values.at(max_index).location; |
4042
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1487 |
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1488 if (thread == Thread::current()) { |
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1489 while (!thread->is_in_stack((address)v0)) { |
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1490 v0 = _values.at(++min_index).location; |
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1491 } |
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1492 while (!thread->is_in_stack((address)v1)) { |
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1493 v1 = _values.at(--max_index).location; |
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1494 } |
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1495 } else { |
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1496 while (!thread->on_local_stack((address)v0)) { |
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1497 v0 = _values.at(++min_index).location; |
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1498 } |
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1499 while (!thread->on_local_stack((address)v1)) { |
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1500 v1 = _values.at(--max_index).location; |
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1501 } |
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1502 } |
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1503 intptr_t* min = MIN2(v0, v1); |
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1504 intptr_t* max = MAX2(v0, v1); |
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1505 intptr_t* cur = max; |
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1506 intptr_t* last = NULL; |
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1507 for (int i = max_index; i >= min_index; i--) { |
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1508 FrameValue fv = _values.at(i); |
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1509 while (cur > fv.location) { |
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1510 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT, cur, *cur); |
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1511 cur--; |
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1512 } |
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1513 if (last == fv.location) { |
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1514 const char* spacer = " " LP64_ONLY(" "); |
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1515 tty->print_cr(" %s %s %s", spacer, spacer, fv.description); |
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1516 } else { |
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1517 tty->print_cr(" " INTPTR_FORMAT ": " INTPTR_FORMAT " %s", fv.location, *fv.location, fv.description); |
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1518 last = fv.location; |
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1519 cur--; |
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1520 } |
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1521 } |
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1522 } |
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1523 |
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1524 #endif |