Mercurial > hg > truffle
annotate src/share/vm/runtime/vframe_hp.cpp @ 1250:3f5b7efb9642
6920293: OptimizeStringConcat causing core dumps
Reviewed-by: kvn, twisti
| author | never |
|---|---|
| date | Fri, 05 Feb 2010 11:07:40 -0800 |
| parents | 15bbd3f505c0 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 844 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_vframe_hp.cpp.incl" | |
| 27 | |
| 28 | |
| 29 // ------------- compiledVFrame -------------- | |
| 30 | |
| 31 StackValueCollection* compiledVFrame::locals() const { | |
| 32 // Natives has no scope | |
| 33 if (scope() == NULL) return new StackValueCollection(0); | |
| 34 GrowableArray<ScopeValue*>* scv_list = scope()->locals(); | |
| 35 if (scv_list == NULL) return new StackValueCollection(0); | |
| 36 | |
| 37 // scv_list is the list of ScopeValues describing the JVM stack state. | |
| 38 // There is one scv_list entry for every JVM stack state in use. | |
| 39 int length = scv_list->length(); | |
| 40 StackValueCollection* result = new StackValueCollection(length); | |
| 41 // In rare instances set_locals may have occurred in which case | |
| 42 // there are local values that are not described by the ScopeValue anymore | |
| 43 GrowableArray<jvmtiDeferredLocalVariable*>* deferred = NULL; | |
| 44 GrowableArray<jvmtiDeferredLocalVariableSet*>* list = thread()->deferred_locals(); | |
| 45 if (list != NULL ) { | |
| 46 // In real life this never happens or is typically a single element search | |
| 47 for (int i = 0; i < list->length(); i++) { | |
| 48 if (list->at(i)->matches((vframe*)this)) { | |
| 49 deferred = list->at(i)->locals(); | |
| 50 break; | |
| 51 } | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 for( int i = 0; i < length; i++ ) { | |
| 56 result->add( create_stack_value(scv_list->at(i)) ); | |
| 57 } | |
| 58 | |
| 59 // Replace specified locals with any deferred writes that are present | |
| 60 if (deferred != NULL) { | |
| 61 for ( int l = 0; l < deferred->length() ; l ++) { | |
| 62 jvmtiDeferredLocalVariable* val = deferred->at(l); | |
| 63 switch (val->type()) { | |
| 64 case T_BOOLEAN: | |
| 65 result->set_int_at(val->index(), val->value().z); | |
| 66 break; | |
| 67 case T_CHAR: | |
| 68 result->set_int_at(val->index(), val->value().c); | |
| 69 break; | |
| 70 case T_FLOAT: | |
| 71 result->set_float_at(val->index(), val->value().f); | |
| 72 break; | |
| 73 case T_DOUBLE: | |
| 74 result->set_double_at(val->index(), val->value().d); | |
| 75 break; | |
| 76 case T_BYTE: | |
| 77 result->set_int_at(val->index(), val->value().b); | |
| 78 break; | |
| 79 case T_SHORT: | |
| 80 result->set_int_at(val->index(), val->value().s); | |
| 81 break; | |
| 82 case T_INT: | |
| 83 result->set_int_at(val->index(), val->value().i); | |
| 84 break; | |
| 85 case T_LONG: | |
| 86 result->set_long_at(val->index(), val->value().j); | |
| 87 break; | |
| 88 case T_OBJECT: | |
| 89 { | |
| 90 Handle obj((oop)val->value().l); | |
| 91 result->set_obj_at(val->index(), obj); | |
| 92 } | |
| 93 break; | |
| 94 default: | |
| 95 ShouldNotReachHere(); | |
| 96 } | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 return result; | |
| 101 } | |
| 102 | |
| 103 | |
| 104 void compiledVFrame::set_locals(StackValueCollection* values) const { | |
| 105 | |
| 106 fatal("Should use update_local for each local update"); | |
| 107 } | |
| 108 | |
| 109 void compiledVFrame::update_local(BasicType type, int index, jvalue value) { | |
| 110 | |
| 111 #ifdef ASSERT | |
| 112 | |
| 113 assert(fr().is_deoptimized_frame(), "frame must be scheduled for deoptimization"); | |
| 114 #endif /* ASSERT */ | |
| 115 GrowableArray<jvmtiDeferredLocalVariableSet*>* deferred = thread()->deferred_locals(); | |
| 116 if (deferred != NULL ) { | |
| 117 // See if this vframe has already had locals with deferred writes | |
| 118 int f; | |
| 119 for ( f = 0 ; f < deferred->length() ; f++ ) { | |
| 120 if (deferred->at(f)->matches(this)) { | |
| 121 // Matching, vframe now see if the local already had deferred write | |
| 122 GrowableArray<jvmtiDeferredLocalVariable*>* locals = deferred->at(f)->locals(); | |
| 123 int l; | |
| 124 for (l = 0 ; l < locals->length() ; l++ ) { | |
| 125 if (locals->at(l)->index() == index) { | |
| 126 locals->at(l)->set_value(value); | |
| 127 return; | |
| 128 } | |
| 129 } | |
| 130 // No matching local already present. Push a new value onto the deferred collection | |
| 131 locals->push(new jvmtiDeferredLocalVariable(index, type, value)); | |
| 132 return; | |
| 133 } | |
| 134 } | |
| 135 // No matching vframe must push a new vframe | |
| 136 } else { | |
| 137 // No deferred updates pending for this thread. | |
| 138 // allocate in C heap | |
| 139 deferred = new(ResourceObj::C_HEAP) GrowableArray<jvmtiDeferredLocalVariableSet*> (1, true); | |
| 140 thread()->set_deferred_locals(deferred); | |
| 141 } | |
| 142 deferred->push(new jvmtiDeferredLocalVariableSet(method(), bci(), fr().id())); | |
| 143 assert(deferred->top()->id() == fr().id(), "Huh? Must match"); | |
| 144 deferred->top()->set_local_at(index, type, value); | |
| 145 } | |
| 146 | |
| 147 StackValueCollection* compiledVFrame::expressions() const { | |
| 148 // Natives has no scope | |
| 149 if (scope() == NULL) return new StackValueCollection(0); | |
| 150 GrowableArray<ScopeValue*>* scv_list = scope()->expressions(); | |
| 151 if (scv_list == NULL) return new StackValueCollection(0); | |
| 152 | |
| 153 // scv_list is the list of ScopeValues describing the JVM stack state. | |
| 154 // There is one scv_list entry for every JVM stack state in use. | |
| 155 int length = scv_list->length(); | |
| 156 StackValueCollection* result = new StackValueCollection(length); | |
| 157 for( int i = 0; i < length; i++ ) | |
| 158 result->add( create_stack_value(scv_list->at(i)) ); | |
| 159 | |
| 160 return result; | |
| 161 } | |
| 162 | |
| 163 | |
| 164 // The implementation of the following two methods was factorized into the | |
| 165 // class StackValue because it is also used from within deoptimization.cpp for | |
| 166 // rematerialization and relocking of non-escaping objects. | |
| 167 | |
| 168 StackValue *compiledVFrame::create_stack_value(ScopeValue *sv) const { | |
| 169 return StackValue::create_stack_value(&_fr, register_map(), sv); | |
| 170 } | |
| 171 | |
| 172 BasicLock* compiledVFrame::resolve_monitor_lock(Location location) const { | |
| 173 return StackValue::resolve_monitor_lock(&_fr, location); | |
| 174 } | |
| 175 | |
| 176 | |
| 177 GrowableArray<MonitorInfo*>* compiledVFrame::monitors() const { | |
| 178 // Natives has no scope | |
| 179 if (scope() == NULL) { | |
| 180 nmethod* nm = code(); | |
| 181 methodOop method = nm->method(); | |
| 182 assert(method->is_native(), ""); | |
| 183 if (!method->is_synchronized()) { | |
| 184 return new GrowableArray<MonitorInfo*>(0); | |
| 185 } | |
| 186 // This monitor is really only needed for UseBiasedLocking, but | |
| 187 // return it in all cases for now as it might be useful for stack | |
| 188 // traces and tools as well | |
| 189 GrowableArray<MonitorInfo*> *monitors = new GrowableArray<MonitorInfo*>(1); | |
| 190 // Casting away const | |
| 191 frame& fr = (frame&) _fr; | |
| 192 MonitorInfo* info = new MonitorInfo(fr.compiled_synchronized_native_monitor_owner(nm), | |
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193 fr.compiled_synchronized_native_monitor(nm), false, false); |
| 0 | 194 monitors->push(info); |
| 195 return monitors; | |
| 196 } | |
| 197 GrowableArray<MonitorValue*>* monitors = scope()->monitors(); | |
| 198 if (monitors == NULL) { | |
| 199 return new GrowableArray<MonitorInfo*>(0); | |
| 200 } | |
| 201 GrowableArray<MonitorInfo*>* result = new GrowableArray<MonitorInfo*>(monitors->length()); | |
| 202 for (int index = 0; index < monitors->length(); index++) { | |
| 203 MonitorValue* mv = monitors->at(index); | |
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204 ScopeValue* ov = mv->owner(); |
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205 StackValue *owner_sv = create_stack_value(ov); // it is an oop |
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206 if (ov->is_object() && owner_sv->obj_is_scalar_replaced()) { // The owner object was scalar replaced |
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207 assert(mv->eliminated(), "monitor should be eliminated for scalar replaced object"); |
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208 // Put klass for scalar replaced object. |
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209 ScopeValue* kv = ((ObjectValue *)ov)->klass(); |
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210 assert(kv->is_constant_oop(), "klass should be oop constant for scalar replaced object"); |
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211 KlassHandle k(((ConstantOopReadValue*)kv)->value()()); |
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212 result->push(new MonitorInfo(k->as_klassOop(), resolve_monitor_lock(mv->basic_lock()), |
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213 mv->eliminated(), true)); |
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214 } else { |
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215 result->push(new MonitorInfo(owner_sv->get_obj()(), resolve_monitor_lock(mv->basic_lock()), |
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216 mv->eliminated(), false)); |
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217 } |
| 0 | 218 } |
| 219 return result; | |
| 220 } | |
| 221 | |
| 222 | |
| 223 compiledVFrame::compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm) | |
| 224 : javaVFrame(fr, reg_map, thread) { | |
| 225 _scope = NULL; | |
| 226 // Compiled method (native stub or Java code) | |
| 227 // native wrappers have no scope data, it is implied | |
| 228 if (!nm->is_native_method()) { | |
| 229 _scope = nm->scope_desc_at(_fr.pc()); | |
| 230 } | |
| 231 } | |
| 232 | |
| 233 compiledVFrame::compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope) | |
| 234 : javaVFrame(fr, reg_map, thread) { | |
| 235 _scope = scope; | |
| 236 guarantee(_scope != NULL, "scope must be present"); | |
| 237 } | |
| 238 | |
| 239 | |
| 240 bool compiledVFrame::is_top() const { | |
| 241 // FIX IT: Remove this when new native stubs are in place | |
| 242 if (scope() == NULL) return true; | |
| 243 return scope()->is_top(); | |
| 244 } | |
| 245 | |
| 246 | |
| 247 nmethod* compiledVFrame::code() const { | |
| 248 return CodeCache::find_nmethod(_fr.pc()); | |
| 249 } | |
| 250 | |
| 251 | |
| 252 methodOop compiledVFrame::method() const { | |
| 253 if (scope() == NULL) { | |
| 254 // native nmethods have no scope the method is implied | |
| 255 nmethod* nm = code(); | |
| 256 assert(nm->is_native_method(), "must be native"); | |
| 257 return nm->method(); | |
| 258 } | |
| 259 return scope()->method()(); | |
| 260 } | |
| 261 | |
| 262 | |
| 263 int compiledVFrame::bci() const { | |
| 264 int raw = raw_bci(); | |
| 265 return raw == SynchronizationEntryBCI ? 0 : raw; | |
| 266 } | |
| 267 | |
| 268 | |
| 269 int compiledVFrame::raw_bci() const { | |
| 270 if (scope() == NULL) { | |
| 271 // native nmethods have no scope the method/bci is implied | |
| 272 nmethod* nm = code(); | |
| 273 assert(nm->is_native_method(), "must be native"); | |
| 274 return 0; | |
| 275 } | |
| 276 return scope()->bci(); | |
| 277 } | |
| 278 | |
|
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279 bool compiledVFrame::should_reexecute() const { |
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280 if (scope() == NULL) { |
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281 // native nmethods have no scope the method/bci is implied |
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282 nmethod* nm = code(); |
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283 assert(nm->is_native_method(), "must be native"); |
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284 return false; |
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285 } |
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286 return scope()->should_reexecute(); |
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287 } |
| 0 | 288 |
| 289 vframe* compiledVFrame::sender() const { | |
| 290 const frame f = fr(); | |
| 291 if (scope() == NULL) { | |
| 292 // native nmethods have no scope the method/bci is implied | |
| 293 nmethod* nm = code(); | |
| 294 assert(nm->is_native_method(), "must be native"); | |
| 295 return vframe::sender(); | |
| 296 } else { | |
| 297 return scope()->is_top() | |
| 298 ? vframe::sender() | |
| 299 : new compiledVFrame(&f, register_map(), thread(), scope()->sender()); | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 jvmtiDeferredLocalVariableSet::jvmtiDeferredLocalVariableSet(methodOop method, int bci, intptr_t* id) { | |
| 304 _method = method; | |
| 305 _bci = bci; | |
| 306 _id = id; | |
| 307 // Alway will need at least one, must be on C heap | |
| 308 _locals = new(ResourceObj::C_HEAP) GrowableArray<jvmtiDeferredLocalVariable*> (1, true); | |
| 309 } | |
| 310 | |
| 311 jvmtiDeferredLocalVariableSet::~jvmtiDeferredLocalVariableSet() { | |
| 312 for (int i = 0; i < _locals->length() ; i++ ) { | |
| 313 delete _locals->at(i); | |
| 314 } | |
| 315 // Free growableArray and c heap for elements | |
| 316 delete _locals; | |
| 317 } | |
| 318 | |
| 319 bool jvmtiDeferredLocalVariableSet::matches(vframe* vf) { | |
| 320 if (!vf->is_compiled_frame()) return false; | |
| 321 compiledVFrame* cvf = (compiledVFrame*)vf; | |
| 322 return cvf->fr().id() == id() && cvf->method() == method() && cvf->bci() == bci(); | |
| 323 } | |
| 324 | |
| 325 void jvmtiDeferredLocalVariableSet::set_local_at(int idx, BasicType type, jvalue val) { | |
| 326 int i; | |
| 327 for ( i = 0 ; i < locals()->length() ; i++ ) { | |
| 328 if ( locals()->at(i)->index() == idx) { | |
| 329 assert(locals()->at(i)->type() == type, "Wrong type"); | |
| 330 locals()->at(i)->set_value(val); | |
| 331 return; | |
| 332 } | |
| 333 } | |
| 334 locals()->push(new jvmtiDeferredLocalVariable(idx, type, val)); | |
| 335 } | |
| 336 | |
| 337 void jvmtiDeferredLocalVariableSet::oops_do(OopClosure* f) { | |
| 338 | |
| 339 f->do_oop((oop*) &_method); | |
| 340 for ( int i = 0; i < locals()->length(); i++ ) { | |
| 341 if ( locals()->at(i)->type() == T_OBJECT) { | |
| 342 f->do_oop(locals()->at(i)->oop_addr()); | |
| 343 } | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 jvmtiDeferredLocalVariable::jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value) { | |
| 348 _index = index; | |
| 349 _type = type; | |
| 350 _value = value; | |
| 351 } | |
| 352 | |
| 353 | |
| 354 #ifndef PRODUCT | |
| 355 void compiledVFrame::verify() const { | |
| 356 Unimplemented(); | |
| 357 } | |
| 358 #endif // PRODUCT |