Refactoring of heap profiler: split ExtractReferences into several functions.
Review URL: https://chromiumcodereview.appspot.com/10198011 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11424 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
alexeif@chromium.org
parent
83cbc638dc
commit
20e6446bd2
@ -1978,212 +1978,24 @@ void V8HeapExplorer::ExtractReferences(HeapObject* obj) {
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bool extract_indexed_refs = true;
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if (obj->IsJSGlobalProxy()) {
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// We need to reference JS global objects from snapshot's root.
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// We use JSGlobalProxy because this is what embedder (e.g. browser)
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// uses for the global object.
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JSGlobalProxy* proxy = JSGlobalProxy::cast(obj);
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Object* object = proxy->map()->prototype();
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bool is_debug_object = false;
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#ifdef ENABLE_DEBUGGER_SUPPORT
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is_debug_object = object->IsGlobalObject() &&
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Isolate::Current()->debug()->IsDebugGlobal(GlobalObject::cast(object));
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#endif
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if (!is_debug_object) {
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SetUserGlobalReference(object);
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}
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ExtractJSGlobalProxy(JSGlobalProxy::cast(obj));
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} else if (obj->IsJSObject()) {
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JSObject* js_obj = JSObject::cast(obj);
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ExtractClosureReferences(js_obj, entry);
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ExtractPropertyReferences(js_obj, entry);
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ExtractElementReferences(js_obj, entry);
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ExtractInternalReferences(js_obj, entry);
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SetPropertyReference(
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obj, entry, heap_->Proto_symbol(), js_obj->GetPrototype());
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if (obj->IsJSFunction()) {
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JSFunction* js_fun = JSFunction::cast(js_obj);
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Object* proto_or_map = js_fun->prototype_or_initial_map();
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if (!proto_or_map->IsTheHole()) {
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if (!proto_or_map->IsMap()) {
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SetPropertyReference(
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obj, entry,
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heap_->prototype_symbol(), proto_or_map,
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NULL,
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JSFunction::kPrototypeOrInitialMapOffset);
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} else {
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SetPropertyReference(
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obj, entry,
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heap_->prototype_symbol(), js_fun->prototype());
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}
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}
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SharedFunctionInfo* shared_info = js_fun->shared();
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// JSFunction has either bindings or literals and never both.
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bool bound = shared_info->bound();
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TagObject(js_fun->literals_or_bindings(),
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bound ? "(function bindings)" : "(function literals)");
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SetInternalReference(js_fun, entry,
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bound ? "bindings" : "literals",
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js_fun->literals_or_bindings(),
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JSFunction::kLiteralsOffset);
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TagObject(shared_info, "(shared function info)");
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SetInternalReference(js_fun, entry,
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"shared", shared_info,
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JSFunction::kSharedFunctionInfoOffset);
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TagObject(js_fun->unchecked_context(), "(context)");
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SetInternalReference(js_fun, entry,
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"context", js_fun->unchecked_context(),
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JSFunction::kContextOffset);
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for (int i = JSFunction::kNonWeakFieldsEndOffset;
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i < JSFunction::kSize;
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i += kPointerSize) {
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SetWeakReference(js_fun, entry, i, *HeapObject::RawField(js_fun, i), i);
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}
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} else if (obj->IsGlobalObject()) {
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GlobalObject* global_obj = GlobalObject::cast(obj);
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SetInternalReference(global_obj, entry,
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"builtins", global_obj->builtins(),
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GlobalObject::kBuiltinsOffset);
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SetInternalReference(global_obj, entry,
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"global_context", global_obj->global_context(),
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GlobalObject::kGlobalContextOffset);
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SetInternalReference(global_obj, entry,
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"global_receiver", global_obj->global_receiver(),
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GlobalObject::kGlobalReceiverOffset);
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}
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TagObject(js_obj->properties(), "(object properties)");
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SetInternalReference(obj, entry,
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"properties", js_obj->properties(),
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JSObject::kPropertiesOffset);
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TagObject(js_obj->elements(), "(object elements)");
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SetInternalReference(obj, entry,
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"elements", js_obj->elements(),
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JSObject::kElementsOffset);
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ExtractJSObject(entry, JSObject::cast(obj));
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} else if (obj->IsString()) {
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if (obj->IsConsString()) {
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ConsString* cs = ConsString::cast(obj);
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SetInternalReference(obj, entry, 1, cs->first());
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SetInternalReference(obj, entry, 2, cs->second());
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}
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if (obj->IsSlicedString()) {
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SlicedString* ss = SlicedString::cast(obj);
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SetInternalReference(obj, entry, "parent", ss->parent());
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}
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ExtractString(entry, String::cast(obj));
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extract_indexed_refs = false;
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} else if (obj->IsContext()) {
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Context* context = Context::cast(obj);
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#define EXTRACT_CONTEXT_FIELD(index, type, name) \
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SetInternalReference(context, entry, #name, context->get(Context::index), \
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FixedArray::OffsetOfElementAt(Context::index));
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EXTRACT_CONTEXT_FIELD(CLOSURE_INDEX, JSFunction, closure);
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EXTRACT_CONTEXT_FIELD(PREVIOUS_INDEX, Context, previous);
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EXTRACT_CONTEXT_FIELD(EXTENSION_INDEX, Object, extension);
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EXTRACT_CONTEXT_FIELD(GLOBAL_INDEX, GlobalObject, global);
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if (obj->IsGlobalContext()) {
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TagObject(context->jsfunction_result_caches(),
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"(context func. result caches)");
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TagObject(context->normalized_map_cache(), "(context norm. map cache)");
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TagObject(context->runtime_context(), "(runtime context)");
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TagObject(context->data(), "(context data)");
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GLOBAL_CONTEXT_FIELDS(EXTRACT_CONTEXT_FIELD);
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#undef EXTRACT_CONTEXT_FIELD
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for (int i = Context::FIRST_WEAK_SLOT;
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i < Context::GLOBAL_CONTEXT_SLOTS;
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++i) {
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SetWeakReference(obj, entry,
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i, context->get(i),
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FixedArray::OffsetOfElementAt(i));
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}
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}
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ExtractContext(entry, Context::cast(obj));
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} else if (obj->IsMap()) {
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Map* map = Map::cast(obj);
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SetInternalReference(obj, entry,
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"prototype", map->prototype(), Map::kPrototypeOffset);
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SetInternalReference(obj, entry,
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"constructor", map->constructor(),
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Map::kConstructorOffset);
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if (!map->instance_descriptors()->IsEmpty()) {
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TagObject(map->instance_descriptors(), "(map descriptors)");
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SetInternalReference(obj, entry,
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"descriptors", map->instance_descriptors(),
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Map::kInstanceDescriptorsOrBitField3Offset);
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}
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TagObject(map->prototype_transitions(), "(prototype transitions)");
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SetInternalReference(obj, entry,
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"prototype_transitions", map->prototype_transitions(),
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Map::kPrototypeTransitionsOffset);
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SetInternalReference(obj, entry,
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"code_cache", map->code_cache(),
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Map::kCodeCacheOffset);
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ExtractMap(entry, Map::cast(obj));
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} else if (obj->IsSharedFunctionInfo()) {
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SharedFunctionInfo* shared = SharedFunctionInfo::cast(obj);
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SetInternalReference(obj, entry,
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"name", shared->name(),
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SharedFunctionInfo::kNameOffset);
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TagObject(shared->code(), "(code)");
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SetInternalReference(obj, entry,
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"code", shared->code(),
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SharedFunctionInfo::kCodeOffset);
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TagObject(shared->scope_info(), "(function scope info)");
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SetInternalReference(obj, entry,
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"scope_info", shared->scope_info(),
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SharedFunctionInfo::kScopeInfoOffset);
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SetInternalReference(obj, entry,
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"instance_class_name", shared->instance_class_name(),
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SharedFunctionInfo::kInstanceClassNameOffset);
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SetInternalReference(obj, entry,
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"script", shared->script(),
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SharedFunctionInfo::kScriptOffset);
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TagObject(shared->construct_stub(), "(code)");
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SetInternalReference(obj, entry,
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"construct_stub", shared->construct_stub(),
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SharedFunctionInfo::kConstructStubOffset);
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SetInternalReference(obj, entry,
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"function_data", shared->function_data(),
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SharedFunctionInfo::kFunctionDataOffset);
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SetInternalReference(obj, entry,
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"debug_info", shared->debug_info(),
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SharedFunctionInfo::kDebugInfoOffset);
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SetInternalReference(obj, entry,
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"inferred_name", shared->inferred_name(),
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SharedFunctionInfo::kInferredNameOffset);
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SetInternalReference(obj, entry,
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"this_property_assignments",
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shared->this_property_assignments(),
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SharedFunctionInfo::kThisPropertyAssignmentsOffset);
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SetWeakReference(obj, entry,
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1, shared->initial_map(),
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SharedFunctionInfo::kInitialMapOffset);
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ExtractSharedFunctionInfo(entry, SharedFunctionInfo::cast(obj));
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} else if (obj->IsScript()) {
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Script* script = Script::cast(obj);
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SetInternalReference(obj, entry,
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"source", script->source(),
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Script::kSourceOffset);
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SetInternalReference(obj, entry,
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"name", script->name(),
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Script::kNameOffset);
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SetInternalReference(obj, entry,
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"data", script->data(),
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Script::kDataOffset);
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SetInternalReference(obj, entry,
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"context_data", script->context_data(),
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Script::kContextOffset);
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TagObject(script->line_ends(), "(script line ends)");
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SetInternalReference(obj, entry,
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"line_ends", script->line_ends(),
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Script::kLineEndsOffset);
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ExtractScript(entry, Script::cast(obj));
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} else if (obj->IsCodeCache()) {
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CodeCache* code_cache = CodeCache::cast(obj);
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TagObject(code_cache->default_cache(), "(default code cache)");
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SetInternalReference(obj, entry,
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"default_cache", code_cache->default_cache(),
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CodeCache::kDefaultCacheOffset);
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TagObject(code_cache->normal_type_cache(), "(code type cache)");
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SetInternalReference(obj, entry,
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"type_cache", code_cache->normal_type_cache(),
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CodeCache::kNormalTypeCacheOffset);
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ExtractCodeCache(entry, CodeCache::cast(obj));
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} else if (obj->IsCode()) {
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Code* code = Code::cast(obj);
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TagObject(code->unchecked_relocation_info(), "(code relocation info)");
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TagObject(code->unchecked_deoptimization_data(), "(code deopt data)");
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ExtractCode(entry, Code::cast(obj));
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}
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if (extract_indexed_refs) {
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SetInternalReference(obj, entry, "map", obj->map(), HeapObject::kMapOffset);
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@ -2193,6 +2005,234 @@ void V8HeapExplorer::ExtractReferences(HeapObject* obj) {
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}
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void V8HeapExplorer::ExtractJSGlobalProxy(JSGlobalProxy* proxy) {
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// We need to reference JS global objects from snapshot's root.
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// We use JSGlobalProxy because this is what embedder (e.g. browser)
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// uses for the global object.
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Object* object = proxy->map()->prototype();
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bool is_debug_object = false;
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#ifdef ENABLE_DEBUGGER_SUPPORT
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is_debug_object = object->IsGlobalObject() &&
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Isolate::Current()->debug()->IsDebugGlobal(GlobalObject::cast(object));
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#endif
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if (!is_debug_object) {
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SetUserGlobalReference(object);
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}
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}
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void V8HeapExplorer::ExtractJSObject(HeapEntry* entry, JSObject* js_obj) {
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HeapObject* obj = js_obj;
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ExtractClosureReferences(js_obj, entry);
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ExtractPropertyReferences(js_obj, entry);
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ExtractElementReferences(js_obj, entry);
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ExtractInternalReferences(js_obj, entry);
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SetPropertyReference(
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obj, entry, heap_->Proto_symbol(), js_obj->GetPrototype());
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if (obj->IsJSFunction()) {
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JSFunction* js_fun = JSFunction::cast(js_obj);
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Object* proto_or_map = js_fun->prototype_or_initial_map();
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if (!proto_or_map->IsTheHole()) {
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if (!proto_or_map->IsMap()) {
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SetPropertyReference(
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obj, entry,
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heap_->prototype_symbol(), proto_or_map,
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NULL,
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JSFunction::kPrototypeOrInitialMapOffset);
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} else {
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SetPropertyReference(
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obj, entry,
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heap_->prototype_symbol(), js_fun->prototype());
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}
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}
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SharedFunctionInfo* shared_info = js_fun->shared();
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// JSFunction has either bindings or literals and never both.
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bool bound = shared_info->bound();
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TagObject(js_fun->literals_or_bindings(),
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bound ? "(function bindings)" : "(function literals)");
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SetInternalReference(js_fun, entry,
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bound ? "bindings" : "literals",
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js_fun->literals_or_bindings(),
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JSFunction::kLiteralsOffset);
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TagObject(shared_info, "(shared function info)");
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SetInternalReference(js_fun, entry,
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"shared", shared_info,
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JSFunction::kSharedFunctionInfoOffset);
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TagObject(js_fun->unchecked_context(), "(context)");
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SetInternalReference(js_fun, entry,
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"context", js_fun->unchecked_context(),
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JSFunction::kContextOffset);
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for (int i = JSFunction::kNonWeakFieldsEndOffset;
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i < JSFunction::kSize;
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i += kPointerSize) {
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SetWeakReference(js_fun, entry, i, *HeapObject::RawField(js_fun, i), i);
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}
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} else if (obj->IsGlobalObject()) {
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GlobalObject* global_obj = GlobalObject::cast(obj);
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SetInternalReference(global_obj, entry,
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"builtins", global_obj->builtins(),
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GlobalObject::kBuiltinsOffset);
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SetInternalReference(global_obj, entry,
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"global_context", global_obj->global_context(),
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GlobalObject::kGlobalContextOffset);
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SetInternalReference(global_obj, entry,
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"global_receiver", global_obj->global_receiver(),
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GlobalObject::kGlobalReceiverOffset);
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}
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TagObject(js_obj->properties(), "(object properties)");
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SetInternalReference(obj, entry,
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"properties", js_obj->properties(),
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JSObject::kPropertiesOffset);
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TagObject(js_obj->elements(), "(object elements)");
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SetInternalReference(obj, entry,
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"elements", js_obj->elements(),
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JSObject::kElementsOffset);
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}
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void V8HeapExplorer::ExtractString(HeapEntry* entry, String* string) {
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if (string->IsConsString()) {
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ConsString* cs = ConsString::cast(string);
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SetInternalReference(cs, entry, 1, cs->first());
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SetInternalReference(cs, entry, 2, cs->second());
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}
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if (string->IsSlicedString()) {
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SlicedString* ss = SlicedString::cast(string);
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SetInternalReference(ss, entry, "parent", ss->parent());
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}
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}
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void V8HeapExplorer::ExtractContext(HeapEntry* entry, Context* context) {
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#define EXTRACT_CONTEXT_FIELD(index, type, name) \
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SetInternalReference(context, entry, #name, context->get(Context::index), \
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FixedArray::OffsetOfElementAt(Context::index));
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EXTRACT_CONTEXT_FIELD(CLOSURE_INDEX, JSFunction, closure);
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EXTRACT_CONTEXT_FIELD(PREVIOUS_INDEX, Context, previous);
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EXTRACT_CONTEXT_FIELD(EXTENSION_INDEX, Object, extension);
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EXTRACT_CONTEXT_FIELD(GLOBAL_INDEX, GlobalObject, global);
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if (context->IsGlobalContext()) {
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TagObject(context->jsfunction_result_caches(),
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"(context func. result caches)");
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TagObject(context->normalized_map_cache(), "(context norm. map cache)");
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TagObject(context->runtime_context(), "(runtime context)");
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TagObject(context->data(), "(context data)");
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GLOBAL_CONTEXT_FIELDS(EXTRACT_CONTEXT_FIELD);
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#undef EXTRACT_CONTEXT_FIELD
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for (int i = Context::FIRST_WEAK_SLOT;
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i < Context::GLOBAL_CONTEXT_SLOTS;
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++i) {
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SetWeakReference(context, entry, i, context->get(i),
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FixedArray::OffsetOfElementAt(i));
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}
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}
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}
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void V8HeapExplorer::ExtractMap(HeapEntry* entry, Map* map) {
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SetInternalReference(map, entry,
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"prototype", map->prototype(), Map::kPrototypeOffset);
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SetInternalReference(map, entry,
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"constructor", map->constructor(),
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Map::kConstructorOffset);
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if (!map->instance_descriptors()->IsEmpty()) {
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TagObject(map->instance_descriptors(), "(map descriptors)");
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SetInternalReference(map, entry,
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"descriptors", map->instance_descriptors(),
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Map::kInstanceDescriptorsOrBitField3Offset);
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}
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TagObject(map->prototype_transitions(), "(prototype transitions)");
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SetInternalReference(map, entry,
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"prototype_transitions", map->prototype_transitions(),
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Map::kPrototypeTransitionsOffset);
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SetInternalReference(map, entry,
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"code_cache", map->code_cache(),
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Map::kCodeCacheOffset);
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}
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void V8HeapExplorer::ExtractSharedFunctionInfo(
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HeapEntry* entry, SharedFunctionInfo* shared) {
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HeapObject* obj = shared;
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SetInternalReference(obj, entry,
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"name", shared->name(),
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SharedFunctionInfo::kNameOffset);
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TagObject(shared->code(), "(code)");
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SetInternalReference(obj, entry,
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"code", shared->code(),
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SharedFunctionInfo::kCodeOffset);
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TagObject(shared->scope_info(), "(function scope info)");
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SetInternalReference(obj, entry,
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"scope_info", shared->scope_info(),
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SharedFunctionInfo::kScopeInfoOffset);
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SetInternalReference(obj, entry,
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"instance_class_name", shared->instance_class_name(),
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SharedFunctionInfo::kInstanceClassNameOffset);
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SetInternalReference(obj, entry,
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"script", shared->script(),
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SharedFunctionInfo::kScriptOffset);
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TagObject(shared->construct_stub(), "(code)");
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SetInternalReference(obj, entry,
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"construct_stub", shared->construct_stub(),
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SharedFunctionInfo::kConstructStubOffset);
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SetInternalReference(obj, entry,
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"function_data", shared->function_data(),
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SharedFunctionInfo::kFunctionDataOffset);
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SetInternalReference(obj, entry,
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"debug_info", shared->debug_info(),
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SharedFunctionInfo::kDebugInfoOffset);
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SetInternalReference(obj, entry,
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"inferred_name", shared->inferred_name(),
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SharedFunctionInfo::kInferredNameOffset);
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SetInternalReference(obj, entry,
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"this_property_assignments",
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shared->this_property_assignments(),
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SharedFunctionInfo::kThisPropertyAssignmentsOffset);
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SetWeakReference(obj, entry,
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1, shared->initial_map(),
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SharedFunctionInfo::kInitialMapOffset);
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}
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void V8HeapExplorer::ExtractScript(HeapEntry* entry, Script* script) {
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HeapObject* obj = script;
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SetInternalReference(obj, entry,
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"source", script->source(),
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Script::kSourceOffset);
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SetInternalReference(obj, entry,
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"name", script->name(),
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Script::kNameOffset);
|
||||
SetInternalReference(obj, entry,
|
||||
"data", script->data(),
|
||||
Script::kDataOffset);
|
||||
SetInternalReference(obj, entry,
|
||||
"context_data", script->context_data(),
|
||||
Script::kContextOffset);
|
||||
TagObject(script->line_ends(), "(script line ends)");
|
||||
SetInternalReference(obj, entry,
|
||||
"line_ends", script->line_ends(),
|
||||
Script::kLineEndsOffset);
|
||||
}
|
||||
|
||||
|
||||
void V8HeapExplorer::ExtractCodeCache(HeapEntry* entry, CodeCache* code_cache) {
|
||||
TagObject(code_cache->default_cache(), "(default code cache)");
|
||||
SetInternalReference(code_cache, entry,
|
||||
"default_cache", code_cache->default_cache(),
|
||||
CodeCache::kDefaultCacheOffset);
|
||||
TagObject(code_cache->normal_type_cache(), "(code type cache)");
|
||||
SetInternalReference(code_cache, entry,
|
||||
"type_cache", code_cache->normal_type_cache(),
|
||||
CodeCache::kNormalTypeCacheOffset);
|
||||
}
|
||||
|
||||
|
||||
void V8HeapExplorer::ExtractCode(HeapEntry* entry, Code* code) {
|
||||
TagObject(code->unchecked_relocation_info(), "(code relocation info)");
|
||||
TagObject(code->unchecked_deoptimization_data(), "(code deopt data)");
|
||||
}
|
||||
|
||||
|
||||
void V8HeapExplorer::ExtractClosureReferences(JSObject* js_obj,
|
||||
HeapEntry* entry) {
|
||||
if (!js_obj->IsJSFunction()) return;
|
||||
|
||||
@ -975,7 +975,17 @@ class V8HeapExplorer : public HeapEntriesAllocator {
|
||||
int children_count,
|
||||
int retainers_count);
|
||||
const char* GetSystemEntryName(HeapObject* object);
|
||||
|
||||
void ExtractReferences(HeapObject* obj);
|
||||
void ExtractJSGlobalProxy(JSGlobalProxy* proxy);
|
||||
void ExtractJSObject(HeapEntry* entry, JSObject* js_obj);
|
||||
void ExtractString(HeapEntry* entry, String* obj);
|
||||
void ExtractContext(HeapEntry* entry, Context* context);
|
||||
void ExtractMap(HeapEntry* entry, Map* map);
|
||||
void ExtractSharedFunctionInfo(HeapEntry* entry, SharedFunctionInfo* shared);
|
||||
void ExtractScript(HeapEntry* entry, Script* script);
|
||||
void ExtractCodeCache(HeapEntry* entry, CodeCache* code_cache);
|
||||
void ExtractCode(HeapEntry* entry, Code* code);
|
||||
void ExtractClosureReferences(JSObject* js_obj, HeapEntry* entry);
|
||||
void ExtractPropertyReferences(JSObject* js_obj, HeapEntry* entry);
|
||||
void ExtractElementReferences(JSObject* js_obj, HeapEntry* entry);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user