Mercurial > hg > truffle
annotate src/share/vm/runtime/vframeArray.cpp @ 5126:43d5ae1051f7
added better debug output when an optimistic deoptimization is disabled
fixed inconsistent newline characters in C++ file
author | Christian Haeubl <christian.haeubl@oracle.com> |
---|---|
date | Tue, 20 Mar 2012 16:15:27 -0700 |
parents | 1c7c5be93e84 |
children | 86478955e54c |
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" | |
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27 #include "code/scopeDesc.hpp" |
1972 | 28 #include "interpreter/interpreter.hpp" |
29 #include "memory/allocation.inline.hpp" | |
30 #include "memory/resourceArea.hpp" | |
31 #include "memory/universe.inline.hpp" | |
32 #include "oops/methodDataOop.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/jvmtiThreadState.hpp" | |
35 #include "runtime/handles.inline.hpp" | |
36 #include "runtime/monitorChunk.hpp" | |
37 #include "runtime/sharedRuntime.hpp" | |
38 #include "runtime/vframe.hpp" | |
39 #include "runtime/vframeArray.hpp" | |
40 #include "runtime/vframe_hp.hpp" | |
41 #include "utilities/events.hpp" | |
42 #ifdef COMPILER2 | |
43 #include "opto/runtime.hpp" | |
44 #endif | |
0 | 45 |
46 | |
47 int vframeArrayElement:: bci(void) const { return (_bci == SynchronizationEntryBCI ? 0 : _bci); } | |
48 | |
49 void vframeArrayElement::free_monitors(JavaThread* jt) { | |
50 if (_monitors != NULL) { | |
51 MonitorChunk* chunk = _monitors; | |
52 _monitors = NULL; | |
53 jt->remove_monitor_chunk(chunk); | |
54 delete chunk; | |
55 } | |
56 } | |
57 | |
58 void vframeArrayElement::fill_in(compiledVFrame* vf) { | |
59 | |
60 // Copy the information from the compiled vframe to the | |
61 // interpreter frame we will be creating to replace vf | |
62 | |
63 _method = vf->method(); | |
64 _bci = vf->raw_bci(); | |
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65 _reexecute = vf->should_reexecute(); |
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66 |
0 | 67 int index; |
68 | |
69 // Get the monitors off-stack | |
70 | |
71 GrowableArray<MonitorInfo*>* list = vf->monitors(); | |
72 if (list->is_empty()) { | |
73 _monitors = NULL; | |
74 } else { | |
75 | |
76 // Allocate monitor chunk | |
77 _monitors = new MonitorChunk(list->length()); | |
78 vf->thread()->add_monitor_chunk(_monitors); | |
79 | |
80 // Migrate the BasicLocks from the stack to the monitor chunk | |
81 for (index = 0; index < list->length(); index++) { | |
82 MonitorInfo* monitor = list->at(index); | |
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83 assert(!monitor->owner_is_scalar_replaced(), "object should be reallocated already"); |
0 | 84 assert(monitor->owner() == NULL || (!monitor->owner()->is_unlocked() && !monitor->owner()->has_bias_pattern()), "object must be null or locked, and unbiased"); |
85 BasicObjectLock* dest = _monitors->at(index); | |
86 dest->set_obj(monitor->owner()); | |
87 monitor->lock()->move_to(monitor->owner(), dest->lock()); | |
88 } | |
89 } | |
90 | |
91 // Convert the vframe locals and expressions to off stack | |
92 // values. Because we will not gc all oops can be converted to | |
93 // intptr_t (i.e. a stack slot) and we are fine. This is | |
94 // good since we are inside a HandleMark and the oops in our | |
95 // collection would go away between packing them here and | |
96 // unpacking them in unpack_on_stack. | |
97 | |
98 // First the locals go off-stack | |
99 | |
100 // FIXME this seems silly it creates a StackValueCollection | |
101 // in order to get the size to then copy them and | |
102 // convert the types to intptr_t size slots. Seems like it | |
103 // could do it in place... Still uses less memory than the | |
104 // old way though | |
105 | |
106 StackValueCollection *locs = vf->locals(); | |
107 _locals = new StackValueCollection(locs->size()); | |
108 for(index = 0; index < locs->size(); index++) { | |
109 StackValue* value = locs->at(index); | |
110 switch(value->type()) { | |
111 case T_OBJECT: | |
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112 assert(!value->obj_is_scalar_replaced(), "object should be reallocated already"); |
0 | 113 // preserve object type |
114 _locals->add( new StackValue((intptr_t) (value->get_obj()()), T_OBJECT )); | |
115 break; | |
116 case T_CONFLICT: | |
117 // A dead local. Will be initialized to null/zero. | |
118 _locals->add( new StackValue()); | |
119 break; | |
120 case T_INT: | |
121 _locals->add( new StackValue(value->get_int())); | |
122 break; | |
123 default: | |
124 ShouldNotReachHere(); | |
125 } | |
126 } | |
127 | |
128 // Now the expressions off-stack | |
129 // Same silliness as above | |
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130 |
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131 StackValueCollection *exprs = vf->expressions(); |
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132 _expressions = new StackValueCollection(exprs->size()); |
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133 for(index = 0; index < exprs->size(); index++) { |
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134 StackValue* value = exprs->at(index); |
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135 switch(value->type()) { |
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136 case T_OBJECT: |
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137 assert(!value->obj_is_scalar_replaced(), "object should be reallocated already"); |
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138 // preserve object type |
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139 _expressions->add( new StackValue((intptr_t) (value->get_obj()()), T_OBJECT )); |
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140 break; |
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141 case T_CONFLICT: |
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142 // A dead stack element. Will be initialized to null/zero. |
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143 // This can occur when the compiler emits a state in which stack |
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144 // elements are known to be dead (because of an imminent exception). |
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145 _expressions->add( new StackValue()); |
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146 break; |
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147 case T_INT: |
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148 _expressions->add( new StackValue(value->get_int())); |
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149 break; |
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150 default: |
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151 ShouldNotReachHere(); |
0 | 152 } |
153 } | |
154 } | |
155 | |
156 int unpack_counter = 0; | |
157 | |
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158 void vframeArrayElement::unpack_on_stack(int caller_actual_parameters, |
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159 int callee_parameters, |
0 | 160 int callee_locals, |
161 frame* caller, | |
162 bool is_top_frame, | |
163 int exec_mode) { | |
164 JavaThread* thread = (JavaThread*) Thread::current(); | |
165 | |
166 // Look at bci and decide on bcp and continuation pc | |
167 address bcp; | |
168 // C++ interpreter doesn't need a pc since it will figure out what to do when it | |
169 // begins execution | |
170 address pc; | |
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171 bool use_next_mdp = false; // true if we should use the mdp associated with the next bci |
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172 // rather than the one associated with bcp |
0 | 173 if (raw_bci() == SynchronizationEntryBCI) { |
174 // We are deoptimizing while hanging in prologue code for synchronized method | |
175 bcp = method()->bcp_from(0); // first byte code | |
176 pc = Interpreter::deopt_entry(vtos, 0); // step = 0 since we don't skip current bytecode | |
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177 } else if (should_reexecute()) { //reexecute this bytecode |
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178 assert(is_top_frame, "reexecute allowed only for the top frame"); |
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179 bcp = method()->bcp_from(bci()); |
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180 pc = Interpreter::deopt_reexecute_entry(method(), bcp); |
0 | 181 } else { |
182 bcp = method()->bcp_from(bci()); | |
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183 pc = Interpreter::deopt_continue_after_entry(method(), bcp, callee_parameters, is_top_frame); |
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184 use_next_mdp = true; |
0 | 185 } |
186 assert(Bytecodes::is_defined(*bcp), "must be a valid bytecode"); | |
187 | |
188 // Monitorenter and pending exceptions: | |
189 // | |
190 // For Compiler2, there should be no pending exception when deoptimizing at monitorenter | |
191 // because there is no safepoint at the null pointer check (it is either handled explicitly | |
192 // or prior to the monitorenter) and asynchronous exceptions are not made "pending" by the | |
193 // runtime interface for the slow case (see JRT_ENTRY_FOR_MONITORENTER). If an asynchronous | |
194 // exception was processed, the bytecode pointer would have to be extended one bytecode beyond | |
195 // the monitorenter to place it in the proper exception range. | |
196 // | |
197 // For Compiler1, deoptimization can occur while throwing a NullPointerException at monitorenter, | |
198 // in which case bcp should point to the monitorenter since it is within the exception's range. | |
199 | |
200 assert(*bcp != Bytecodes::_monitorenter || is_top_frame, "a _monitorenter must be a top frame"); | |
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201 assert(thread->deopt_nmethod() != NULL, "nmethod should be known"); |
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202 guarantee(!(thread->deopt_nmethod()->is_compiled_by_c2() && |
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203 *bcp == Bytecodes::_monitorenter && |
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204 exec_mode == Deoptimization::Unpack_exception), |
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205 "shouldn't get exception during monitorenter"); |
0 | 206 |
207 int popframe_preserved_args_size_in_bytes = 0; | |
208 int popframe_preserved_args_size_in_words = 0; | |
209 if (is_top_frame) { | |
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210 JvmtiThreadState *state = thread->jvmti_thread_state(); |
0 | 211 if (JvmtiExport::can_pop_frame() && |
212 (thread->has_pending_popframe() || thread->popframe_forcing_deopt_reexecution())) { | |
213 if (thread->has_pending_popframe()) { | |
214 // Pop top frame after deoptimization | |
215 #ifndef CC_INTERP | |
216 pc = Interpreter::remove_activation_preserving_args_entry(); | |
217 #else | |
218 // Do an uncommon trap type entry. c++ interpreter will know | |
219 // to pop frame and preserve the args | |
220 pc = Interpreter::deopt_entry(vtos, 0); | |
221 use_next_mdp = false; | |
222 #endif | |
223 } else { | |
224 // Reexecute invoke in top frame | |
225 pc = Interpreter::deopt_entry(vtos, 0); | |
226 use_next_mdp = false; | |
227 popframe_preserved_args_size_in_bytes = in_bytes(thread->popframe_preserved_args_size()); | |
228 // Note: the PopFrame-related extension of the expression stack size is done in | |
229 // Deoptimization::fetch_unroll_info_helper | |
230 popframe_preserved_args_size_in_words = in_words(thread->popframe_preserved_args_size_in_words()); | |
231 } | |
232 } else if (JvmtiExport::can_force_early_return() && state != NULL && state->is_earlyret_pending()) { | |
233 // Force early return from top frame after deoptimization | |
234 #ifndef CC_INTERP | |
235 pc = Interpreter::remove_activation_early_entry(state->earlyret_tos()); | |
236 #else | |
237 // TBD: Need to implement ForceEarlyReturn for CC_INTERP (ia64) | |
238 #endif | |
239 } else { | |
240 // Possibly override the previous pc computation of the top (youngest) frame | |
241 switch (exec_mode) { | |
242 case Deoptimization::Unpack_deopt: | |
243 // use what we've got | |
244 break; | |
245 case Deoptimization::Unpack_exception: | |
246 // exception is pending | |
1295 | 247 pc = SharedRuntime::raw_exception_handler_for_return_address(thread, pc); |
0 | 248 // [phh] We're going to end up in some handler or other, so it doesn't |
249 // matter what mdp we point to. See exception_handler_for_exception() | |
250 // in interpreterRuntime.cpp. | |
251 break; | |
252 case Deoptimization::Unpack_uncommon_trap: | |
253 case Deoptimization::Unpack_reexecute: | |
254 // redo last byte code | |
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255 assert(should_reexecute(), ""); |
0 | 256 pc = Interpreter::deopt_entry(vtos, 0); |
257 use_next_mdp = false; | |
258 break; | |
259 default: | |
260 ShouldNotReachHere(); | |
261 } | |
262 } | |
263 } | |
264 | |
265 // Setup the interpreter frame | |
266 | |
267 assert(method() != NULL, "method must exist"); | |
268 int temps = expressions()->size(); | |
269 | |
270 int locks = monitors() == NULL ? 0 : monitors()->number_of_monitors(); | |
271 | |
272 Interpreter::layout_activation(method(), | |
273 temps + callee_parameters, | |
274 popframe_preserved_args_size_in_words, | |
275 locks, | |
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276 caller_actual_parameters, |
0 | 277 callee_parameters, |
278 callee_locals, | |
279 caller, | |
280 iframe(), | |
281 is_top_frame); | |
282 | |
283 // Update the pc in the frame object and overwrite the temporary pc | |
284 // we placed in the skeletal frame now that we finally know the | |
285 // exact interpreter address we should use. | |
286 | |
287 _frame.patch_pc(thread, pc); | |
288 | |
289 assert (!method()->is_synchronized() || locks > 0, "synchronized methods must have monitors"); | |
290 | |
291 BasicObjectLock* top = iframe()->interpreter_frame_monitor_begin(); | |
292 for (int index = 0; index < locks; index++) { | |
293 top = iframe()->previous_monitor_in_interpreter_frame(top); | |
294 BasicObjectLock* src = _monitors->at(index); | |
295 top->set_obj(src->obj()); | |
296 src->lock()->move_to(src->obj(), top->lock()); | |
297 } | |
298 if (ProfileInterpreter) { | |
299 iframe()->interpreter_frame_set_mdx(0); // clear out the mdp. | |
300 } | |
301 iframe()->interpreter_frame_set_bcx((intptr_t)bcp); // cannot use bcp because frame is not initialized yet | |
302 if (ProfileInterpreter) { | |
303 methodDataOop mdo = method()->method_data(); | |
304 if (mdo != NULL) { | |
305 int bci = iframe()->interpreter_frame_bci(); | |
306 if (use_next_mdp) ++bci; | |
307 address mdp = mdo->bci_to_dp(bci); | |
308 iframe()->interpreter_frame_set_mdp(mdp); | |
309 } | |
310 } | |
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Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
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311 |
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312 if (PrintDeoptimizationDetails) { |
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313 tty->print_cr("Expressions size: %d", expressions()->size()); |
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314 } |
0 | 315 |
316 // Unpack expression stack | |
317 // If this is an intermediate frame (i.e. not top frame) then this | |
318 // only unpacks the part of the expression stack not used by callee | |
319 // as parameters. The callee parameters are unpacked as part of the | |
320 // callee locals. | |
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321 int i; |
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322 for(i = 0; i < expressions()->size(); i++) { |
0 | 323 StackValue *value = expressions()->at(i); |
324 intptr_t* addr = iframe()->interpreter_frame_expression_stack_at(i); | |
325 switch(value->type()) { | |
326 case T_INT: | |
327 *addr = value->get_int(); | |
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328 #ifndef PRODUCT |
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329 if (PrintDeoptimizationDetails) { |
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330 tty->print_cr("Reconstructed expression %d (INT): %d", i, (int)(*addr)); |
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331 } |
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332 #endif |
0 | 333 break; |
334 case T_OBJECT: | |
335 *addr = value->get_int(T_OBJECT); | |
1936
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Correct deopt handler entry. New flag -XX:+TraceSignals. More detailed deopt printing.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
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336 #ifndef PRODUCT |
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337 if (PrintDeoptimizationDetails) { |
1936
8d88c9ac9247
Correct deopt handler entry. New flag -XX:+TraceSignals. More detailed deopt printing.
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338 tty->print("Reconstructed expression %d (OBJECT): ", i); |
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339 oop o = (oop)(*addr); |
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340 if (o == NULL) { |
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341 tty->print_cr("NULL"); |
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342 } else { |
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343 tty->print_cr(err_msg("%s", o->blueprint()->name()->as_C_string())); |
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344 } |
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345 } |
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346 #endif |
0 | 347 break; |
348 case T_CONFLICT: | |
349 // A dead stack slot. Initialize to null in case it is an oop. | |
350 *addr = NULL_WORD; | |
351 break; | |
352 default: | |
353 ShouldNotReachHere(); | |
354 } | |
355 } | |
356 | |
357 | |
358 // Unpack the locals | |
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359 for(i = 0; i < locals()->size(); i++) { |
0 | 360 StackValue *value = locals()->at(i); |
361 intptr_t* addr = iframe()->interpreter_frame_local_at(i); | |
362 switch(value->type()) { | |
363 case T_INT: | |
364 *addr = value->get_int(); | |
1936
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Correct deopt handler entry. New flag -XX:+TraceSignals. More detailed deopt printing.
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365 #ifndef PRODUCT |
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366 if (PrintDeoptimizationDetails) { |
1936
8d88c9ac9247
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367 tty->print_cr("Reconstructed local %d (INT): %d", i, (int)(*addr)); |
8d88c9ac9247
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368 } |
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369 #endif |
0 | 370 break; |
371 case T_OBJECT: | |
372 *addr = value->get_int(T_OBJECT); | |
1936
8d88c9ac9247
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Thomas Wuerthinger <wuerthinger@ssw.jku.at>
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373 #ifndef PRODUCT |
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374 if (PrintDeoptimizationDetails) { |
1936
8d88c9ac9247
Correct deopt handler entry. New flag -XX:+TraceSignals. More detailed deopt printing.
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375 tty->print("Reconstructed local %d (OBJECT): ", i); |
8d88c9ac9247
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376 oop o = (oop)(*addr); |
8d88c9ac9247
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377 if (o == NULL) { |
8d88c9ac9247
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378 tty->print_cr("NULL"); |
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379 } else { |
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380 tty->print_cr(err_msg("%s", o->blueprint()->name()->as_C_string())); |
8d88c9ac9247
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381 } |
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382 } |
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383 #endif |
0 | 384 break; |
385 case T_CONFLICT: | |
386 // A dead location. If it is an oop then we need a NULL to prevent GC from following it | |
387 *addr = NULL_WORD; | |
388 break; | |
389 default: | |
390 ShouldNotReachHere(); | |
391 } | |
392 } | |
393 | |
394 if (is_top_frame && JvmtiExport::can_pop_frame() && thread->popframe_forcing_deopt_reexecution()) { | |
395 // An interpreted frame was popped but it returns to a deoptimized | |
396 // frame. The incoming arguments to the interpreted activation | |
397 // were preserved in thread-local storage by the | |
398 // remove_activation_preserving_args_entry in the interpreter; now | |
399 // we put them back into the just-unpacked interpreter frame. | |
400 // Note that this assumes that the locals arena grows toward lower | |
401 // addresses. | |
402 if (popframe_preserved_args_size_in_words != 0) { | |
403 void* saved_args = thread->popframe_preserved_args(); | |
404 assert(saved_args != NULL, "must have been saved by interpreter"); | |
405 #ifdef ASSERT | |
406 assert(popframe_preserved_args_size_in_words <= | |
1506 | 407 iframe()->interpreter_frame_expression_stack_size()*Interpreter::stackElementWords, |
0 | 408 "expression stack size should have been extended"); |
409 #endif // ASSERT | |
410 int top_element = iframe()->interpreter_frame_expression_stack_size()-1; | |
411 intptr_t* base; | |
412 if (frame::interpreter_frame_expression_stack_direction() < 0) { | |
413 base = iframe()->interpreter_frame_expression_stack_at(top_element); | |
414 } else { | |
415 base = iframe()->interpreter_frame_expression_stack(); | |
416 } | |
1603
d93949c5bdcc
6730276: JDI_REGRESSION tests fail with "Error: count must be non-zero" error on x86
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417 Copy::conjoint_jbytes(saved_args, |
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418 base, |
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419 popframe_preserved_args_size_in_bytes); |
0 | 420 thread->popframe_free_preserved_args(); |
421 } | |
422 } | |
423 | |
424 #ifndef PRODUCT | |
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425 if (PrintDeoptimizationDetails) { |
0 | 426 ttyLocker ttyl; |
427 tty->print_cr("[%d Interpreted Frame]", ++unpack_counter); | |
428 iframe()->print_on(tty); | |
429 RegisterMap map(thread); | |
430 vframe* f = vframe::new_vframe(iframe(), &map, thread); | |
431 f->print(); | |
432 tty->cr(); | |
433 // method()->print_codes(); | |
434 } else if (TraceDeoptimization) { | |
435 tty->print(" "); | |
436 method()->print_value(); | |
2142 | 437 Bytecodes::Code code = Bytecodes::java_code_at(method(), bcp); |
0 | 438 int bci = method()->bci_from(bcp); |
439 tty->print(" - %s", Bytecodes::name(code)); | |
440 tty->print(" @ bci %d ", bci); | |
441 tty->print_cr("sp = " PTR_FORMAT, iframe()->sp()); | |
442 } | |
443 #endif // PRODUCT | |
444 | |
445 // The expression stack and locals are in the resource area don't leave | |
446 // a dangling pointer in the vframeArray we leave around for debug | |
447 // purposes | |
448 | |
449 _locals = _expressions = NULL; | |
450 | |
451 } | |
452 | |
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453 int vframeArrayElement::on_stack_size(int caller_actual_parameters, |
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454 int callee_parameters, |
0 | 455 int callee_locals, |
456 bool is_top_frame, | |
457 int popframe_extra_stack_expression_els) const { | |
458 assert(method()->max_locals() == locals()->size(), "just checking"); | |
459 int locks = monitors() == NULL ? 0 : monitors()->number_of_monitors(); | |
460 int temps = expressions()->size(); | |
461 return Interpreter::size_activation(method(), | |
462 temps + callee_parameters, | |
463 popframe_extra_stack_expression_els, | |
464 locks, | |
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465 caller_actual_parameters, |
0 | 466 callee_parameters, |
467 callee_locals, | |
468 is_top_frame); | |
469 } | |
470 | |
471 | |
472 | |
473 vframeArray* vframeArray::allocate(JavaThread* thread, int frame_size, GrowableArray<compiledVFrame*>* chunk, | |
474 RegisterMap *reg_map, frame sender, frame caller, frame self) { | |
475 | |
476 // Allocate the vframeArray | |
477 vframeArray * result = (vframeArray*) AllocateHeap(sizeof(vframeArray) + // fixed part | |
478 sizeof(vframeArrayElement) * (chunk->length() - 1), // variable part | |
479 "vframeArray::allocate"); | |
480 result->_frames = chunk->length(); | |
481 result->_owner_thread = thread; | |
482 result->_sender = sender; | |
483 result->_caller = caller; | |
484 result->_original = self; | |
485 result->set_unroll_block(NULL); // initialize it | |
486 result->fill_in(thread, frame_size, chunk, reg_map); | |
487 return result; | |
488 } | |
489 | |
490 void vframeArray::fill_in(JavaThread* thread, | |
491 int frame_size, | |
492 GrowableArray<compiledVFrame*>* chunk, | |
493 const RegisterMap *reg_map) { | |
494 // Set owner first, it is used when adding monitor chunks | |
495 | |
496 _frame_size = frame_size; | |
497 for(int i = 0; i < chunk->length(); i++) { | |
498 element(i)->fill_in(chunk->at(i)); | |
499 } | |
500 | |
501 // Copy registers for callee-saved registers | |
502 if (reg_map != NULL) { | |
503 for(int i = 0; i < RegisterMap::reg_count; i++) { | |
504 #ifdef AMD64 | |
505 // The register map has one entry for every int (32-bit value), so | |
506 // 64-bit physical registers have two entries in the map, one for | |
507 // each half. Ignore the high halves of 64-bit registers, just like | |
508 // frame::oopmapreg_to_location does. | |
509 // | |
510 // [phh] FIXME: this is a temporary hack! This code *should* work | |
511 // correctly w/o this hack, possibly by changing RegisterMap::pd_location | |
512 // in frame_amd64.cpp and the values of the phantom high half registers | |
513 // in amd64.ad. | |
514 // if (VMReg::Name(i) < SharedInfo::stack0 && is_even(i)) { | |
515 intptr_t* src = (intptr_t*) reg_map->location(VMRegImpl::as_VMReg(i)); | |
516 _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
517 // } else { | |
518 // jint* src = (jint*) reg_map->location(VMReg::Name(i)); | |
519 // _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
520 // } | |
521 #else | |
522 jint* src = (jint*) reg_map->location(VMRegImpl::as_VMReg(i)); | |
523 _callee_registers[i] = src != NULL ? *src : NULL_WORD; | |
524 #endif | |
525 if (src == NULL) { | |
526 set_location_valid(i, false); | |
527 } else { | |
528 set_location_valid(i, true); | |
529 jint* dst = (jint*) register_location(i); | |
530 *dst = *src; | |
531 } | |
532 } | |
533 } | |
534 } | |
535 | |
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536 void vframeArray::unpack_to_stack(frame &unpack_frame, int exec_mode, int caller_actual_parameters) { |
0 | 537 // stack picture |
538 // unpack_frame | |
539 // [new interpreter frames ] (frames are skeletal but walkable) | |
540 // caller_frame | |
541 // | |
542 // This routine fills in the missing data for the skeletal interpreter frames | |
543 // in the above picture. | |
544 | |
545 // Find the skeletal interpreter frames to unpack into | |
546 RegisterMap map(JavaThread::current(), false); | |
547 // Get the youngest frame we will unpack (last to be unpacked) | |
548 frame me = unpack_frame.sender(&map); | |
549 int index; | |
550 for (index = 0; index < frames(); index++ ) { | |
551 *element(index)->iframe() = me; | |
552 // Get the caller frame (possibly skeletal) | |
553 me = me.sender(&map); | |
554 } | |
555 | |
556 frame caller_frame = me; | |
557 | |
558 // Do the unpacking of interpreter frames; the frame at index 0 represents the top activation, so it has no callee | |
559 | |
560 // Unpack the frames from the oldest (frames() -1) to the youngest (0) | |
561 | |
562 for (index = frames() - 1; index >= 0 ; index--) { | |
563 int callee_parameters = index == 0 ? 0 : element(index-1)->method()->size_of_parameters(); | |
564 int callee_locals = index == 0 ? 0 : element(index-1)->method()->max_locals(); | |
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565 element(index)->unpack_on_stack(caller_actual_parameters, |
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566 callee_parameters, |
0 | 567 callee_locals, |
568 &caller_frame, | |
569 index == 0, | |
570 exec_mode); | |
571 if (index == frames() - 1) { | |
572 Deoptimization::unwind_callee_save_values(element(index)->iframe(), this); | |
573 } | |
574 caller_frame = *element(index)->iframe(); | |
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575 caller_actual_parameters = callee_parameters; |
0 | 576 } |
577 | |
578 | |
579 deallocate_monitor_chunks(); | |
580 } | |
581 | |
582 void vframeArray::deallocate_monitor_chunks() { | |
583 JavaThread* jt = JavaThread::current(); | |
584 for (int index = 0; index < frames(); index++ ) { | |
585 element(index)->free_monitors(jt); | |
586 } | |
587 } | |
588 | |
589 #ifndef PRODUCT | |
590 | |
591 bool vframeArray::structural_compare(JavaThread* thread, GrowableArray<compiledVFrame*>* chunk) { | |
592 if (owner_thread() != thread) return false; | |
593 int index = 0; | |
594 #if 0 // FIXME can't do this comparison | |
595 | |
596 // Compare only within vframe array. | |
597 for (deoptimizedVFrame* vf = deoptimizedVFrame::cast(vframe_at(first_index())); vf; vf = vf->deoptimized_sender_or_null()) { | |
598 if (index >= chunk->length() || !vf->structural_compare(chunk->at(index))) return false; | |
599 index++; | |
600 } | |
601 if (index != chunk->length()) return false; | |
602 #endif | |
603 | |
604 return true; | |
605 } | |
606 | |
607 #endif | |
608 | |
609 address vframeArray::register_location(int i) const { | |
610 assert(0 <= i && i < RegisterMap::reg_count, "index out of bounds"); | |
611 return (address) & _callee_registers[i]; | |
612 } | |
613 | |
614 | |
615 #ifndef PRODUCT | |
616 | |
617 // Printing | |
618 | |
619 // Note: we cannot have print_on as const, as we allocate inside the method | |
620 void vframeArray::print_on_2(outputStream* st) { | |
621 st->print_cr(" - sp: " INTPTR_FORMAT, sp()); | |
622 st->print(" - thread: "); | |
623 Thread::current()->print(); | |
624 st->print_cr(" - frame size: %d", frame_size()); | |
625 for (int index = 0; index < frames() ; index++ ) { | |
626 element(index)->print(st); | |
627 } | |
628 } | |
629 | |
630 void vframeArrayElement::print(outputStream* st) { | |
1255
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631 st->print_cr(" - interpreter_frame -> sp: " INTPTR_FORMAT, iframe()->sp()); |
0 | 632 } |
633 | |
634 void vframeArray::print_value_on(outputStream* st) const { | |
635 st->print_cr("vframeArray [%d] ", frames()); | |
636 } | |
637 | |
638 | |
639 #endif |