Mercurial > hg > truffle
annotate src/share/vm/runtime/vframeArray.cpp @ 4939:45a1bf98f1bb
7141329: Strange values of stack_size in -XX:+TraceMethodHandles output
Reviewed-by: kvn, never
author | twisti |
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date | Mon, 13 Feb 2012 02:29:22 -0800 |
parents | 3d2ab563047a |
children | be4ca325525a d2a62e0f25eb |
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 "classfile/vmSymbols.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "memory/allocation.inline.hpp" | |
29 #include "memory/resourceArea.hpp" | |
30 #include "memory/universe.inline.hpp" | |
31 #include "oops/methodDataOop.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "prims/jvmtiThreadState.hpp" | |
34 #include "runtime/handles.inline.hpp" | |
35 #include "runtime/monitorChunk.hpp" | |
36 #include "runtime/sharedRuntime.hpp" | |
37 #include "runtime/vframe.hpp" | |
38 #include "runtime/vframeArray.hpp" | |
39 #include "runtime/vframe_hp.hpp" | |
40 #include "utilities/events.hpp" | |
41 #ifdef COMPILER2 | |
42 #include "opto/runtime.hpp" | |
43 #endif | |
0 | 44 |
45 | |
46 int vframeArrayElement:: bci(void) const { return (_bci == SynchronizationEntryBCI ? 0 : _bci); } | |
47 | |
48 void vframeArrayElement::free_monitors(JavaThread* jt) { | |
49 if (_monitors != NULL) { | |
50 MonitorChunk* chunk = _monitors; | |
51 _monitors = NULL; | |
52 jt->remove_monitor_chunk(chunk); | |
53 delete chunk; | |
54 } | |
55 } | |
56 | |
57 void vframeArrayElement::fill_in(compiledVFrame* vf) { | |
58 | |
59 // Copy the information from the compiled vframe to the | |
60 // interpreter frame we will be creating to replace vf | |
61 | |
62 _method = vf->method(); | |
63 _bci = vf->raw_bci(); | |
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64 _reexecute = vf->should_reexecute(); |
0 | 65 |
66 int index; | |
67 | |
68 // Get the monitors off-stack | |
69 | |
70 GrowableArray<MonitorInfo*>* list = vf->monitors(); | |
71 if (list->is_empty()) { | |
72 _monitors = NULL; | |
73 } else { | |
74 | |
75 // Allocate monitor chunk | |
76 _monitors = new MonitorChunk(list->length()); | |
77 vf->thread()->add_monitor_chunk(_monitors); | |
78 | |
79 // Migrate the BasicLocks from the stack to the monitor chunk | |
80 for (index = 0; index < list->length(); index++) { | |
81 MonitorInfo* monitor = list->at(index); | |
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82 assert(!monitor->owner_is_scalar_replaced(), "object should be reallocated already"); |
0 | 83 assert(monitor->owner() == NULL || (!monitor->owner()->is_unlocked() && !monitor->owner()->has_bias_pattern()), "object must be null or locked, and unbiased"); |
84 BasicObjectLock* dest = _monitors->at(index); | |
85 dest->set_obj(monitor->owner()); | |
86 monitor->lock()->move_to(monitor->owner(), dest->lock()); | |
87 } | |
88 } | |
89 | |
90 // Convert the vframe locals and expressions to off stack | |
91 // values. Because we will not gc all oops can be converted to | |
92 // intptr_t (i.e. a stack slot) and we are fine. This is | |
93 // good since we are inside a HandleMark and the oops in our | |
94 // collection would go away between packing them here and | |
95 // unpacking them in unpack_on_stack. | |
96 | |
97 // First the locals go off-stack | |
98 | |
99 // FIXME this seems silly it creates a StackValueCollection | |
100 // in order to get the size to then copy them and | |
101 // convert the types to intptr_t size slots. Seems like it | |
102 // could do it in place... Still uses less memory than the | |
103 // old way though | |
104 | |
105 StackValueCollection *locs = vf->locals(); | |
106 _locals = new StackValueCollection(locs->size()); | |
107 for(index = 0; index < locs->size(); index++) { | |
108 StackValue* value = locs->at(index); | |
109 switch(value->type()) { | |
110 case T_OBJECT: | |
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111 assert(!value->obj_is_scalar_replaced(), "object should be reallocated already"); |
0 | 112 // preserve object type |
113 _locals->add( new StackValue((intptr_t) (value->get_obj()()), T_OBJECT )); | |
114 break; | |
115 case T_CONFLICT: | |
116 // A dead local. Will be initialized to null/zero. | |
117 _locals->add( new StackValue()); | |
118 break; | |
119 case T_INT: | |
120 _locals->add( new StackValue(value->get_int())); | |
121 break; | |
122 default: | |
123 ShouldNotReachHere(); | |
124 } | |
125 } | |
126 | |
127 // Now the expressions off-stack | |
128 // Same silliness as above | |
129 | |
130 StackValueCollection *exprs = vf->expressions(); | |
131 _expressions = new StackValueCollection(exprs->size()); | |
132 for(index = 0; index < exprs->size(); index++) { | |
133 StackValue* value = exprs->at(index); | |
134 switch(value->type()) { | |
135 case T_OBJECT: | |
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136 assert(!value->obj_is_scalar_replaced(), "object should be reallocated already"); |
0 | 137 // preserve object type |
138 _expressions->add( new StackValue((intptr_t) (value->get_obj()()), T_OBJECT )); | |
139 break; | |
140 case T_CONFLICT: | |
141 // A dead stack element. Will be initialized to null/zero. | |
142 // This can occur when the compiler emits a state in which stack | |
143 // elements are known to be dead (because of an imminent exception). | |
144 _expressions->add( new StackValue()); | |
145 break; | |
146 case T_INT: | |
147 _expressions->add( new StackValue(value->get_int())); | |
148 break; | |
149 default: | |
150 ShouldNotReachHere(); | |
151 } | |
152 } | |
153 } | |
154 | |
155 int unpack_counter = 0; | |
156 | |
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157 void vframeArrayElement::unpack_on_stack(int caller_actual_parameters, |
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158 int callee_parameters, |
0 | 159 int callee_locals, |
160 frame* caller, | |
161 bool is_top_frame, | |
162 int exec_mode) { | |
163 JavaThread* thread = (JavaThread*) Thread::current(); | |
164 | |
165 // Look at bci and decide on bcp and continuation pc | |
166 address bcp; | |
167 // C++ interpreter doesn't need a pc since it will figure out what to do when it | |
168 // begins execution | |
169 address pc; | |
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170 bool use_next_mdp = false; // true if we should use the mdp associated with the next bci |
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171 // rather than the one associated with bcp |
0 | 172 if (raw_bci() == SynchronizationEntryBCI) { |
173 // We are deoptimizing while hanging in prologue code for synchronized method | |
174 bcp = method()->bcp_from(0); // first byte code | |
175 pc = Interpreter::deopt_entry(vtos, 0); // step = 0 since we don't skip current bytecode | |
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176 } else if (should_reexecute()) { //reexecute this bytecode |
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177 assert(is_top_frame, "reexecute allowed only for the top frame"); |
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178 bcp = method()->bcp_from(bci()); |
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179 pc = Interpreter::deopt_reexecute_entry(method(), bcp); |
0 | 180 } else { |
181 bcp = method()->bcp_from(bci()); | |
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182 pc = Interpreter::deopt_continue_after_entry(method(), bcp, callee_parameters, is_top_frame); |
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183 use_next_mdp = true; |
0 | 184 } |
185 assert(Bytecodes::is_defined(*bcp), "must be a valid bytecode"); | |
186 | |
187 // Monitorenter and pending exceptions: | |
188 // | |
189 // For Compiler2, there should be no pending exception when deoptimizing at monitorenter | |
190 // because there is no safepoint at the null pointer check (it is either handled explicitly | |
191 // or prior to the monitorenter) and asynchronous exceptions are not made "pending" by the | |
192 // runtime interface for the slow case (see JRT_ENTRY_FOR_MONITORENTER). If an asynchronous | |
193 // exception was processed, the bytecode pointer would have to be extended one bytecode beyond | |
194 // the monitorenter to place it in the proper exception range. | |
195 // | |
196 // For Compiler1, deoptimization can occur while throwing a NullPointerException at monitorenter, | |
197 // in which case bcp should point to the monitorenter since it is within the exception's range. | |
198 | |
199 assert(*bcp != Bytecodes::_monitorenter || is_top_frame, "a _monitorenter must be a top frame"); | |
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200 assert(thread->deopt_nmethod() != NULL, "nmethod should be known"); |
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201 guarantee(!(thread->deopt_nmethod()->is_compiled_by_c2() && |
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202 *bcp == Bytecodes::_monitorenter && |
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203 exec_mode == Deoptimization::Unpack_exception), |
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204 "shouldn't get exception during monitorenter"); |
0 | 205 |
206 int popframe_preserved_args_size_in_bytes = 0; | |
207 int popframe_preserved_args_size_in_words = 0; | |
208 if (is_top_frame) { | |
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209 JvmtiThreadState *state = thread->jvmti_thread_state(); |
0 | 210 if (JvmtiExport::can_pop_frame() && |
211 (thread->has_pending_popframe() || thread->popframe_forcing_deopt_reexecution())) { | |
212 if (thread->has_pending_popframe()) { | |
213 // Pop top frame after deoptimization | |
214 #ifndef CC_INTERP | |
215 pc = Interpreter::remove_activation_preserving_args_entry(); | |
216 #else | |
217 // Do an uncommon trap type entry. c++ interpreter will know | |
218 // to pop frame and preserve the args | |
219 pc = Interpreter::deopt_entry(vtos, 0); | |
220 use_next_mdp = false; | |
221 #endif | |
222 } else { | |
223 // Reexecute invoke in top frame | |
224 pc = Interpreter::deopt_entry(vtos, 0); | |
225 use_next_mdp = false; | |
226 popframe_preserved_args_size_in_bytes = in_bytes(thread->popframe_preserved_args_size()); | |
227 // Note: the PopFrame-related extension of the expression stack size is done in | |
228 // Deoptimization::fetch_unroll_info_helper | |
229 popframe_preserved_args_size_in_words = in_words(thread->popframe_preserved_args_size_in_words()); | |
230 } | |
231 } else if (JvmtiExport::can_force_early_return() && state != NULL && state->is_earlyret_pending()) { | |
232 // Force early return from top frame after deoptimization | |
233 #ifndef CC_INTERP | |
234 pc = Interpreter::remove_activation_early_entry(state->earlyret_tos()); | |
235 #else | |
236 // TBD: Need to implement ForceEarlyReturn for CC_INTERP (ia64) | |
237 #endif | |
238 } else { | |
239 // Possibly override the previous pc computation of the top (youngest) frame | |
240 switch (exec_mode) { | |
241 case Deoptimization::Unpack_deopt: | |
242 // use what we've got | |
243 break; | |
244 case Deoptimization::Unpack_exception: | |
245 // exception is pending | |
1295 | 246 pc = SharedRuntime::raw_exception_handler_for_return_address(thread, pc); |
0 | 247 // [phh] We're going to end up in some handler or other, so it doesn't |
248 // matter what mdp we point to. See exception_handler_for_exception() | |
249 // in interpreterRuntime.cpp. | |
250 break; | |
251 case Deoptimization::Unpack_uncommon_trap: | |
252 case Deoptimization::Unpack_reexecute: | |
253 // redo last byte code | |
254 pc = Interpreter::deopt_entry(vtos, 0); | |
255 use_next_mdp = false; | |
256 break; | |
257 default: | |
258 ShouldNotReachHere(); | |
259 } | |
260 } | |
261 } | |
262 | |
263 // Setup the interpreter frame | |
264 | |
265 assert(method() != NULL, "method must exist"); | |
266 int temps = expressions()->size(); | |
267 | |
268 int locks = monitors() == NULL ? 0 : monitors()->number_of_monitors(); | |
269 | |
270 Interpreter::layout_activation(method(), | |
271 temps + callee_parameters, | |
272 popframe_preserved_args_size_in_words, | |
273 locks, | |
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274 caller_actual_parameters, |
0 | 275 callee_parameters, |
276 callee_locals, | |
277 caller, | |
278 iframe(), | |
279 is_top_frame); | |
280 | |
281 // Update the pc in the frame object and overwrite the temporary pc | |
282 // we placed in the skeletal frame now that we finally know the | |
283 // exact interpreter address we should use. | |
284 | |
285 _frame.patch_pc(thread, pc); | |
286 | |
287 assert (!method()->is_synchronized() || locks > 0, "synchronized methods must have monitors"); | |
288 | |
289 BasicObjectLock* top = iframe()->interpreter_frame_monitor_begin(); | |
290 for (int index = 0; index < locks; index++) { | |
291 top = iframe()->previous_monitor_in_interpreter_frame(top); | |
292 BasicObjectLock* src = _monitors->at(index); | |
293 top->set_obj(src->obj()); | |
294 src->lock()->move_to(src->obj(), top->lock()); | |
295 } | |
296 if (ProfileInterpreter) { | |
297 iframe()->interpreter_frame_set_mdx(0); // clear out the mdp. | |
298 } | |
299 iframe()->interpreter_frame_set_bcx((intptr_t)bcp); // cannot use bcp because frame is not initialized yet | |
300 if (ProfileInterpreter) { | |
301 methodDataOop mdo = method()->method_data(); | |
302 if (mdo != NULL) { | |
303 int bci = iframe()->interpreter_frame_bci(); | |
304 if (use_next_mdp) ++bci; | |
305 address mdp = mdo->bci_to_dp(bci); | |
306 iframe()->interpreter_frame_set_mdp(mdp); | |
307 } | |
308 } | |
309 | |
310 // Unpack expression stack | |
311 // If this is an intermediate frame (i.e. not top frame) then this | |
312 // only unpacks the part of the expression stack not used by callee | |
313 // as parameters. The callee parameters are unpacked as part of the | |
314 // callee locals. | |
315 int i; | |
316 for(i = 0; i < expressions()->size(); i++) { | |
317 StackValue *value = expressions()->at(i); | |
318 intptr_t* addr = iframe()->interpreter_frame_expression_stack_at(i); | |
319 switch(value->type()) { | |
320 case T_INT: | |
321 *addr = value->get_int(); | |
322 break; | |
323 case T_OBJECT: | |
324 *addr = value->get_int(T_OBJECT); | |
325 break; | |
326 case T_CONFLICT: | |
327 // A dead stack slot. Initialize to null in case it is an oop. | |
328 *addr = NULL_WORD; | |
329 break; | |
330 default: | |
331 ShouldNotReachHere(); | |
332 } | |
333 } | |
334 | |
335 | |
336 // Unpack the locals | |
337 for(i = 0; i < locals()->size(); i++) { | |
338 StackValue *value = locals()->at(i); | |
339 intptr_t* addr = iframe()->interpreter_frame_local_at(i); | |
340 switch(value->type()) { | |
341 case T_INT: | |
342 *addr = value->get_int(); | |
343 break; | |
344 case T_OBJECT: | |
345 *addr = value->get_int(T_OBJECT); | |
346 break; | |
347 case T_CONFLICT: | |
348 // A dead location. If it is an oop then we need a NULL to prevent GC from following it | |
349 *addr = NULL_WORD; | |
350 break; | |
351 default: | |
352 ShouldNotReachHere(); | |
353 } | |
354 } | |
355 | |
356 if (is_top_frame && JvmtiExport::can_pop_frame() && thread->popframe_forcing_deopt_reexecution()) { | |
357 // An interpreted frame was popped but it returns to a deoptimized | |
358 // frame. The incoming arguments to the interpreted activation | |
359 // were preserved in thread-local storage by the | |
360 // remove_activation_preserving_args_entry in the interpreter; now | |
361 // we put them back into the just-unpacked interpreter frame. | |
362 // Note that this assumes that the locals arena grows toward lower | |
363 // addresses. | |
364 if (popframe_preserved_args_size_in_words != 0) { | |
365 void* saved_args = thread->popframe_preserved_args(); | |
366 assert(saved_args != NULL, "must have been saved by interpreter"); | |
367 #ifdef ASSERT | |
368 assert(popframe_preserved_args_size_in_words <= | |
1506 | 369 iframe()->interpreter_frame_expression_stack_size()*Interpreter::stackElementWords, |
0 | 370 "expression stack size should have been extended"); |
371 #endif // ASSERT | |
372 int top_element = iframe()->interpreter_frame_expression_stack_size()-1; | |
373 intptr_t* base; | |
374 if (frame::interpreter_frame_expression_stack_direction() < 0) { | |
375 base = iframe()->interpreter_frame_expression_stack_at(top_element); | |
376 } else { | |
377 base = iframe()->interpreter_frame_expression_stack(); | |
378 } | |
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379 Copy::conjoint_jbytes(saved_args, |
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380 base, |
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381 popframe_preserved_args_size_in_bytes); |
0 | 382 thread->popframe_free_preserved_args(); |
383 } | |
384 } | |
385 | |
386 #ifndef PRODUCT | |
387 if (TraceDeoptimization && Verbose) { | |
388 ttyLocker ttyl; | |
389 tty->print_cr("[%d Interpreted Frame]", ++unpack_counter); | |
390 iframe()->print_on(tty); | |
391 RegisterMap map(thread); | |
392 vframe* f = vframe::new_vframe(iframe(), &map, thread); | |
393 f->print(); | |
394 | |
395 tty->print_cr("locals size %d", locals()->size()); | |
396 tty->print_cr("expression size %d", expressions()->size()); | |
397 | |
398 method()->print_value(); | |
399 tty->cr(); | |
400 // method()->print_codes(); | |
401 } else if (TraceDeoptimization) { | |
402 tty->print(" "); | |
403 method()->print_value(); | |
2142 | 404 Bytecodes::Code code = Bytecodes::java_code_at(method(), bcp); |
0 | 405 int bci = method()->bci_from(bcp); |
406 tty->print(" - %s", Bytecodes::name(code)); | |
407 tty->print(" @ bci %d ", bci); | |
408 tty->print_cr("sp = " PTR_FORMAT, iframe()->sp()); | |
409 } | |
410 #endif // PRODUCT | |
411 | |
412 // The expression stack and locals are in the resource area don't leave | |
413 // a dangling pointer in the vframeArray we leave around for debug | |
414 // purposes | |
415 | |
416 _locals = _expressions = NULL; | |
417 | |
418 } | |
419 | |
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420 int vframeArrayElement::on_stack_size(int caller_actual_parameters, |
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421 int callee_parameters, |
0 | 422 int callee_locals, |
423 bool is_top_frame, | |
424 int popframe_extra_stack_expression_els) const { | |
425 assert(method()->max_locals() == locals()->size(), "just checking"); | |
426 int locks = monitors() == NULL ? 0 : monitors()->number_of_monitors(); | |
427 int temps = expressions()->size(); | |
428 return Interpreter::size_activation(method(), | |
429 temps + callee_parameters, | |
430 popframe_extra_stack_expression_els, | |
431 locks, | |
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432 caller_actual_parameters, |
0 | 433 callee_parameters, |
434 callee_locals, | |
435 is_top_frame); | |
436 } | |
437 | |
438 | |
439 | |
440 vframeArray* vframeArray::allocate(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, | |
441 RegisterMap *reg_map, frame sender, frame caller, frame self) { | |
442 | |
443 // Allocate the vframeArray | |
444 vframeArray * result = (vframeArray*) AllocateHeap(sizeof(vframeArray) + // fixed part | |
445 sizeof(vframeArrayElement) * (chunk->length() - 1), // variable part | |
446 "vframeArray::allocate"); | |
447 result->_frames = chunk->length(); | |
448 result->_owner_thread = thread; | |
449 result->_sender = sender; | |
450 result->_caller = caller; | |
451 result->_original = self; | |
452 result->set_unroll_block(NULL); // initialize it | |
453 result->fill_in(thread, frame_size, chunk, reg_map); | |
454 return result; | |
455 } | |
456 | |
457 void vframeArray::fill_in(JavaThread* thread, | |
458 int frame_size, | |
459 GrowableArray<compiledVFrame*>* chunk, | |
460 const RegisterMap *reg_map) { | |
461 // Set owner first, it is used when adding monitor chunks | |
462 | |
463 _frame_size = frame_size; | |
464 for(int i = 0; i < chunk->length(); i++) { | |
465 element(i)->fill_in(chunk->at(i)); | |
466 } | |
467 | |
468 // Copy registers for callee-saved registers | |
469 if (reg_map != NULL) { | |
470 for(int i = 0; i < RegisterMap::reg_count; i++) { | |
471 #ifdef AMD64 | |
472 // The register map has one entry for every int (32-bit value), so | |
473 // 64-bit physical registers have two entries in the map, one for | |
474 // each half. Ignore the high halves of 64-bit registers, just like | |
475 // frame::oopmapreg_to_location does. | |
476 // | |
477 // [phh] FIXME: this is a temporary hack! This code *should* work | |
478 // correctly w/o this hack, possibly by changing RegisterMap::pd_location | |
479 // in frame_amd64.cpp and the values of the phantom high half registers | |
480 // in amd64.ad. | |
481 // if (VMReg::Name(i) < SharedInfo::stack0 && is_even(i)) { | |
482 intptr_t* src = (intptr_t*) reg_map->location(VMRegImpl::as_VMReg(i)); | |
483 _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
484 // } else { | |
485 // jint* src = (jint*) reg_map->location(VMReg::Name(i)); | |
486 // _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
487 // } | |
488 #else | |
489 jint* src = (jint*) reg_map->location(VMRegImpl::as_VMReg(i)); | |
490 _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
491 #endif | |
492 if (src == NULL) { | |
493 set_location_valid(i, false); | |
494 } else { | |
495 set_location_valid(i, true); | |
496 jint* dst = (jint*) register_location(i); | |
497 *dst = *src; | |
498 } | |
499 } | |
500 } | |
501 } | |
502 | |
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503 void vframeArray::unpack_to_stack(frame &unpack_frame, int exec_mode, int caller_actual_parameters) { |
0 | 504 // stack picture |
505 // unpack_frame | |
506 // [new interpreter frames ] (frames are skeletal but walkable) | |
507 // caller_frame | |
508 // | |
509 // This routine fills in the missing data for the skeletal interpreter frames | |
510 // in the above picture. | |
511 | |
512 // Find the skeletal interpreter frames to unpack into | |
513 RegisterMap map(JavaThread::current(), false); | |
514 // Get the youngest frame we will unpack (last to be unpacked) | |
515 frame me = unpack_frame.sender(&map); | |
516 int index; | |
517 for (index = 0; index < frames(); index++ ) { | |
518 *element(index)->iframe() = me; | |
519 // Get the caller frame (possibly skeletal) | |
520 me = me.sender(&map); | |
521 } | |
522 | |
523 frame caller_frame = me; | |
524 | |
525 // Do the unpacking of interpreter frames; the frame at index 0 represents the top activation, so it has no callee | |
526 | |
527 // Unpack the frames from the oldest (frames() -1) to the youngest (0) | |
528 | |
529 for (index = frames() - 1; index >= 0 ; index--) { | |
530 int callee_parameters = index == 0 ? 0 : element(index-1)->method()->size_of_parameters(); | |
531 int callee_locals = index == 0 ? 0 : element(index-1)->method()->max_locals(); | |
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532 element(index)->unpack_on_stack(caller_actual_parameters, |
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533 callee_parameters, |
0 | 534 callee_locals, |
535 &caller_frame, | |
536 index == 0, | |
537 exec_mode); | |
538 if (index == frames() - 1) { | |
539 Deoptimization::unwind_callee_save_values(element(index)->iframe(), this); | |
540 } | |
541 caller_frame = *element(index)->iframe(); | |
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542 caller_actual_parameters = callee_parameters; |
0 | 543 } |
544 | |
545 | |
546 deallocate_monitor_chunks(); | |
547 } | |
548 | |
549 void vframeArray::deallocate_monitor_chunks() { | |
550 JavaThread* jt = JavaThread::current(); | |
551 for (int index = 0; index < frames(); index++ ) { | |
552 element(index)->free_monitors(jt); | |
553 } | |
554 } | |
555 | |
556 #ifndef PRODUCT | |
557 | |
558 bool vframeArray::structural_compare(JavaThread* thread, GrowableArray<compiledVFrame*>* chunk) { | |
559 if (owner_thread() != thread) return false; | |
560 int index = 0; | |
561 #if 0 // FIXME can't do this comparison | |
562 | |
563 // Compare only within vframe array. | |
564 for (deoptimizedVFrame* vf = deoptimizedVFrame::cast(vframe_at(first_index())); vf; vf = vf->deoptimized_sender_or_null()) { | |
565 if (index >= chunk->length() || !vf->structural_compare(chunk->at(index))) return false; | |
566 index++; | |
567 } | |
568 if (index != chunk->length()) return false; | |
569 #endif | |
570 | |
571 return true; | |
572 } | |
573 | |
574 #endif | |
575 | |
576 address vframeArray::register_location(int i) const { | |
577 assert(0 <= i && i < RegisterMap::reg_count, "index out of bounds"); | |
578 return (address) & _callee_registers[i]; | |
579 } | |
580 | |
581 | |
582 #ifndef PRODUCT | |
583 | |
584 // Printing | |
585 | |
586 // Note: we cannot have print_on as const, as we allocate inside the method | |
587 void vframeArray::print_on_2(outputStream* st) { | |
588 st->print_cr(" - sp: " INTPTR_FORMAT, sp()); | |
589 st->print(" - thread: "); | |
590 Thread::current()->print(); | |
591 st->print_cr(" - frame size: %d", frame_size()); | |
592 for (int index = 0; index < frames() ; index++ ) { | |
593 element(index)->print(st); | |
594 } | |
595 } | |
596 | |
597 void vframeArrayElement::print(outputStream* st) { | |
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598 st->print_cr(" - interpreter_frame -> sp: " INTPTR_FORMAT, iframe()->sp()); |
0 | 599 } |
600 | |
601 void vframeArray::print_value_on(outputStream* st) const { | |
602 st->print_cr("vframeArray [%d] ", frames()); | |
603 } | |
604 | |
605 | |
606 #endif |