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src/hotspot/share/runtime/vframe_hp.cpp

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rev 56101 : 8227745: Enable Escape Analysis for better performance when debugging
Reviewed-by: ???


 100   value.l = (jobject) val->owner();
 101   update_deferred_value(T_OBJECT, index + method()->max_locals() + method()->max_stack(), value);
 102 }
 103 
 104 void compiledVFrame::update_deferred_value(BasicType type, int index, jvalue value) {
 105   assert(fr().is_deoptimized_frame(), "frame must be scheduled for deoptimization");
 106   GrowableArray<jvmtiDeferredLocalVariableSet*>* deferred = thread()->deferred_locals();
 107   jvmtiDeferredLocalVariableSet* locals = NULL;
 108   if (deferred != NULL ) {
 109     // See if this vframe has already had locals with deferred writes
 110     for (int f = 0; f < deferred->length(); f++ ) {
 111       if (deferred->at(f)->matches(this)) {
 112         locals = deferred->at(f);
 113         break;
 114       }
 115     }
 116     // No matching vframe must push a new vframe
 117   } else {
 118     // No deferred updates pending for this thread.
 119     // allocate in C heap
 120     deferred =  new(ResourceObj::C_HEAP, mtCompiler) GrowableArray<jvmtiDeferredLocalVariableSet*> (1, true);
 121     thread()->set_deferred_locals(deferred);
 122   }
 123   if (locals == NULL) {
 124     locals = new jvmtiDeferredLocalVariableSet(method(), bci(), fr().id(), vframe_id());
 125     deferred->push(locals);
 126     assert(locals->id() == fr().id(), "Huh? Must match");
 127   }
 128   locals->set_value_at(index, type, value);
 129 }
 130 
 131 StackValueCollection* compiledVFrame::expressions() const {
 132   // Natives has no scope
 133   if (scope() == NULL) return new StackValueCollection(0);
 134   GrowableArray<ScopeValue*>*  scv_list = scope()->expressions();
 135   if (scv_list == NULL) return new StackValueCollection(0);
 136 
 137   // scv_list is the list of ScopeValues describing the JVM stack state.
 138   // There is one scv_list entry for every JVM stack state in use.
 139   int length = scv_list->length();
 140   StackValueCollection* result = new StackValueCollection(length);
 141   for (int i = 0; i < length; i++) {


 292 int compiledVFrame::raw_bci() const {
 293   if (scope() == NULL) {
 294     // native nmethods have no scope the method/bci is implied
 295     nmethod* nm = code()->as_nmethod();
 296     assert(nm->is_native_method(), "must be native");
 297     return 0;
 298   }
 299   return scope()->bci();
 300 }
 301 
 302 bool compiledVFrame::should_reexecute() const {
 303   if (scope() == NULL) {
 304     // native nmethods have no scope the method/bci is implied
 305     nmethod* nm = code()->as_nmethod();
 306     assert(nm->is_native_method(), "must be native");
 307     return false;
 308   }
 309   return scope()->should_reexecute();
 310 }
 311 




















 312 vframe* compiledVFrame::sender() const {
 313   const frame f = fr();
 314   if (scope() == NULL) {
 315     // native nmethods have no scope the method/bci is implied
 316     nmethod* nm = code()->as_nmethod();
 317     assert(nm->is_native_method(), "must be native");
 318     return vframe::sender();
 319   } else {
 320     return scope()->is_top()
 321       ? vframe::sender()
 322       : new compiledVFrame(&f, register_map(), thread(), scope()->sender(), vframe_id() + 1);
 323   }
 324 }
 325 
 326 jvmtiDeferredLocalVariableSet::jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id, int vframe_id) {
 327   _method = method;
 328   _bci = bci;
 329   _id = id;
 330   _vframe_id = vframe_id;
 331   // Alway will need at least one, must be on C heap
 332   _locals = new(ResourceObj::C_HEAP, mtCompiler) GrowableArray<jvmtiDeferredLocalVariable*> (1, true);

 333 }
 334 
 335 jvmtiDeferredLocalVariableSet::~jvmtiDeferredLocalVariableSet() {
 336   for (int i = 0; i < _locals->length(); i++ ) {
 337     delete _locals->at(i);
 338   }
 339   // Free growableArray and c heap for elements
 340   delete _locals;
 341 }
 342 
 343 bool jvmtiDeferredLocalVariableSet::matches(const vframe* vf) {
 344   if (!vf->is_compiled_frame()) return false;
 345   compiledVFrame* cvf = (compiledVFrame*)vf;
 346   if (cvf->fr().id() == id() && cvf->vframe_id() == vframe_id()) {
 347     assert(cvf->method() == method() && cvf->bci() == bci(), "must agree");
 348     return true;
 349   }
 350   return false;
 351 }
 352 


 407   }
 408 }
 409 
 410 
 411 void jvmtiDeferredLocalVariableSet::update_stack(StackValueCollection* expressions) {
 412   for (int l = 0; l < _locals->length(); l ++) {
 413     jvmtiDeferredLocalVariable* val = _locals->at(l);
 414     if (val->index() >= method()->max_locals() && val->index() < method()->max_locals() + method()->max_stack()) {
 415       update_value(expressions, val->type(), val->index() - method()->max_locals(), val->value());
 416     }
 417   }
 418 }
 419 
 420 
 421 void jvmtiDeferredLocalVariableSet::update_monitors(GrowableArray<MonitorInfo*>* monitors) {
 422   for (int l = 0; l < _locals->length(); l ++) {
 423     jvmtiDeferredLocalVariable* val = _locals->at(l);
 424     if (val->index() >= method()->max_locals() + method()->max_stack()) {
 425       int lock_index = val->index() - (method()->max_locals() + method()->max_stack());
 426       MonitorInfo* info = monitors->at(lock_index);
 427       MonitorInfo* new_info = new MonitorInfo((oopDesc*)val->value().l, info->lock(), info->eliminated(), info->owner_is_scalar_replaced());
 428       monitors->at_put(lock_index, new_info);
 429     }
 430   }
 431 }
 432 
 433 
 434 void jvmtiDeferredLocalVariableSet::oops_do(OopClosure* f) {
 435   // The Method* is on the stack so a live activation keeps it alive
 436   // either by mirror in interpreter or code in compiled code.
 437   for (int i = 0; i < _locals->length(); i++) {
 438     if (_locals->at(i)->type() == T_OBJECT) {
 439       f->do_oop(_locals->at(i)->oop_addr());
 440     }
 441   }
 442 }
 443 
 444 jvmtiDeferredLocalVariable::jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value) {
 445   _index = index;
 446   _type = type;
 447   _value = value;


 100   value.l = (jobject) val->owner();
 101   update_deferred_value(T_OBJECT, index + method()->max_locals() + method()->max_stack(), value);
 102 }
 103 
 104 void compiledVFrame::update_deferred_value(BasicType type, int index, jvalue value) {
 105   assert(fr().is_deoptimized_frame(), "frame must be scheduled for deoptimization");
 106   GrowableArray<jvmtiDeferredLocalVariableSet*>* deferred = thread()->deferred_locals();
 107   jvmtiDeferredLocalVariableSet* locals = NULL;
 108   if (deferred != NULL ) {
 109     // See if this vframe has already had locals with deferred writes
 110     for (int f = 0; f < deferred->length(); f++ ) {
 111       if (deferred->at(f)->matches(this)) {
 112         locals = deferred->at(f);
 113         break;
 114       }
 115     }
 116     // No matching vframe must push a new vframe
 117   } else {
 118     // No deferred updates pending for this thread.
 119     // allocate in C heap
 120     thread()->allocate_deferred_updates();
 121     deferred = thread()->deferred_locals();
 122   }
 123   if (locals == NULL) {
 124     locals = new jvmtiDeferredLocalVariableSet(method(), bci(), fr().id(), vframe_id());
 125     deferred->push(locals);
 126     assert(locals->id() == fr().id(), "Huh? Must match");
 127   }
 128   locals->set_value_at(index, type, value);
 129 }
 130 
 131 StackValueCollection* compiledVFrame::expressions() const {
 132   // Natives has no scope
 133   if (scope() == NULL) return new StackValueCollection(0);
 134   GrowableArray<ScopeValue*>*  scv_list = scope()->expressions();
 135   if (scv_list == NULL) return new StackValueCollection(0);
 136 
 137   // scv_list is the list of ScopeValues describing the JVM stack state.
 138   // There is one scv_list entry for every JVM stack state in use.
 139   int length = scv_list->length();
 140   StackValueCollection* result = new StackValueCollection(length);
 141   for (int i = 0; i < length; i++) {


 292 int compiledVFrame::raw_bci() const {
 293   if (scope() == NULL) {
 294     // native nmethods have no scope the method/bci is implied
 295     nmethod* nm = code()->as_nmethod();
 296     assert(nm->is_native_method(), "must be native");
 297     return 0;
 298   }
 299   return scope()->bci();
 300 }
 301 
 302 bool compiledVFrame::should_reexecute() const {
 303   if (scope() == NULL) {
 304     // native nmethods have no scope the method/bci is implied
 305     nmethod* nm = code()->as_nmethod();
 306     assert(nm->is_native_method(), "must be native");
 307     return false;
 308   }
 309   return scope()->should_reexecute();
 310 }
 311 
 312 bool compiledVFrame::not_global_escape_in_scope() const {
 313   if (scope() == NULL) {
 314     // native nmethod, all objs escape
 315     nmethod* nm = code()->as_nmethod();
 316     assert(nm->is_native_method(), "must be native");
 317     return false;
 318   }
 319   return (scope()->objects() != NULL) || scope()->not_global_escape_in_scope();
 320 }
 321 
 322 bool compiledVFrame::arg_escape() const {
 323   if (scope() == NULL) {
 324     // native nmethod, all objs escape
 325     nmethod* nm = code()->as_nmethod();
 326     assert(nm->is_native_method(), "must be native");
 327     return false;
 328   }
 329   return scope()->arg_escape();
 330 }
 331 
 332 vframe* compiledVFrame::sender() const {
 333   const frame f = fr();
 334   if (scope() == NULL) {
 335     // native nmethods have no scope the method/bci is implied
 336     nmethod* nm = code()->as_nmethod();
 337     assert(nm->is_native_method(), "must be native");
 338     return vframe::sender();
 339   } else {
 340     return scope()->is_top()
 341       ? vframe::sender()
 342       : new compiledVFrame(&f, register_map(), thread(), scope()->sender(), vframe_id() + 1);
 343   }
 344 }
 345 
 346 jvmtiDeferredLocalVariableSet::jvmtiDeferredLocalVariableSet(Method* method, int bci, intptr_t* id, int vframe_id) {
 347   _method = method;
 348   _bci = bci;
 349   _id = id;
 350   _vframe_id = vframe_id;
 351   // Alway will need at least one, must be on C heap
 352   _locals = new(ResourceObj::C_HEAP, mtCompiler) GrowableArray<jvmtiDeferredLocalVariable*> (1, true);
 353   _objects_are_deoptimized = false;
 354 }
 355 
 356 jvmtiDeferredLocalVariableSet::~jvmtiDeferredLocalVariableSet() {
 357   for (int i = 0; i < _locals->length(); i++ ) {
 358     delete _locals->at(i);
 359   }
 360   // Free growableArray and c heap for elements
 361   delete _locals;
 362 }
 363 
 364 bool jvmtiDeferredLocalVariableSet::matches(const vframe* vf) {
 365   if (!vf->is_compiled_frame()) return false;
 366   compiledVFrame* cvf = (compiledVFrame*)vf;
 367   if (cvf->fr().id() == id() && cvf->vframe_id() == vframe_id()) {
 368     assert(cvf->method() == method() && cvf->bci() == bci(), "must agree");
 369     return true;
 370   }
 371   return false;
 372 }
 373 


 428   }
 429 }
 430 
 431 
 432 void jvmtiDeferredLocalVariableSet::update_stack(StackValueCollection* expressions) {
 433   for (int l = 0; l < _locals->length(); l ++) {
 434     jvmtiDeferredLocalVariable* val = _locals->at(l);
 435     if (val->index() >= method()->max_locals() && val->index() < method()->max_locals() + method()->max_stack()) {
 436       update_value(expressions, val->type(), val->index() - method()->max_locals(), val->value());
 437     }
 438   }
 439 }
 440 
 441 
 442 void jvmtiDeferredLocalVariableSet::update_monitors(GrowableArray<MonitorInfo*>* monitors) {
 443   for (int l = 0; l < _locals->length(); l ++) {
 444     jvmtiDeferredLocalVariable* val = _locals->at(l);
 445     if (val->index() >= method()->max_locals() + method()->max_stack()) {
 446       int lock_index = val->index() - (method()->max_locals() + method()->max_stack());
 447       MonitorInfo* info = monitors->at(lock_index);
 448       MonitorInfo* new_info = new MonitorInfo((oopDesc*)val->value().l, info->lock(), info->eliminated(), false);
 449       monitors->at_put(lock_index, new_info);
 450     }
 451   }
 452 }
 453 
 454 
 455 void jvmtiDeferredLocalVariableSet::oops_do(OopClosure* f) {
 456   // The Method* is on the stack so a live activation keeps it alive
 457   // either by mirror in interpreter or code in compiled code.
 458   for (int i = 0; i < _locals->length(); i++) {
 459     if (_locals->at(i)->type() == T_OBJECT) {
 460       f->do_oop(_locals->at(i)->oop_addr());
 461     }
 462   }
 463 }
 464 
 465 jvmtiDeferredLocalVariable::jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value) {
 466   _index = index;
 467   _type = type;
 468   _value = value;
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