Ryan Macnak
7d7e7c268e
Type canonicalization is deferred between in may involve cycles. Instances are canonicalized eagerly, but their type arguments are not necessarily canonical yet, which can lead to incorrect canonicalization of the instance. The work around is to include the most popular type arguments in the serializer's set of base objects, bypassing deferred canonicalization. Other type arguments will continue to fail. Bug: https://github.com/dart-lang/sdk/issues/33430 Change-Id: Ia992b3ebc2974b54acb5c88b3e1d836f6ec1f1b8 Reviewed-on: https://dart-review.googlesource.com/61721 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
253 lines
13 KiB
C++
253 lines
13 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_OBJECT_STORE_H_
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#define RUNTIME_VM_OBJECT_STORE_H_
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#include "vm/object.h"
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namespace dart {
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// Forward declarations.
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class Isolate;
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class ObjectPointerVisitor;
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// A list of the bootstrap libraries including CamelName and name.
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//
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// These are listed in the order that they are compiled (see vm/bootstrap.cc).
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#define FOR_EACH_BOOTSTRAP_LIBRARY(M) \
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M(Core, core) \
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M(Async, async) \
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M(Collection, collection) \
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M(Convert, convert) \
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M(Developer, developer) \
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M(Internal, _internal) \
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M(Isolate, isolate) \
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M(Math, math) \
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M(Mirrors, mirrors) \
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M(Profiler, profiler) \
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M(TypedData, typed_data) \
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M(VMService, _vmservice)
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#define OBJECT_STORE_FIELD_LIST(R_, RW) \
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RW(Class, object_class) \
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RW(Type, object_type) \
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RW(Class, null_class) \
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RW(Type, null_type) \
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RW(Type, function_type) \
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RW(Type, type_type) \
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RW(Class, closure_class) \
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RW(Type, number_type) \
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RW(Type, int_type) \
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RW(Class, integer_implementation_class) \
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RW(Type, int64_type) \
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RW(Class, smi_class) \
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RW(Type, smi_type) \
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RW(Class, mint_class) \
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RW(Type, mint_type) \
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RW(Class, double_class) \
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RW(Type, double_type) \
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RW(Type, float32x4_type) \
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RW(Type, int32x4_type) \
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RW(Type, float64x2_type) \
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RW(Type, string_type) \
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RW(TypeArguments, type_argument_int) \
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RW(TypeArguments, type_argument_double) \
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RW(TypeArguments, type_argument_string) \
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RW(TypeArguments, type_argument_string_dynamic) \
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RW(TypeArguments, type_argument_string_string) \
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RW(Class, compiletime_error_class) \
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RW(Class, pragma_class) \
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RW(Class, future_class) \
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RW(Class, completer_class) \
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RW(Class, symbol_class) \
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RW(Class, one_byte_string_class) \
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RW(Class, two_byte_string_class) \
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RW(Class, external_one_byte_string_class) \
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RW(Class, external_two_byte_string_class) \
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RW(Type, bool_type) \
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RW(Class, bool_class) \
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RW(Class, array_class) \
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RW(Type, array_type) \
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RW(Class, immutable_array_class) \
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RW(Class, growable_object_array_class) \
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RW(Class, linked_hash_map_class) \
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RW(Class, float32x4_class) \
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RW(Class, int32x4_class) \
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RW(Class, float64x2_class) \
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RW(Class, error_class) \
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RW(Class, weak_property_class) \
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RW(Array, symbol_table) \
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RW(Array, canonical_types) \
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RW(Array, canonical_type_arguments) \
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RW(Library, async_library) \
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RW(Library, builtin_library) \
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RW(Library, core_library) \
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RW(Library, collection_library) \
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RW(Library, convert_library) \
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RW(Library, developer_library) \
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RW(Library, _internal_library) \
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RW(Library, isolate_library) \
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RW(Library, math_library) \
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RW(Library, mirrors_library) \
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RW(Library, native_wrappers_library) \
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RW(Library, profiler_library) \
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RW(Library, root_library) \
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RW(Library, typed_data_library) \
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RW(Library, _vmservice_library) \
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RW(GrowableObjectArray, libraries) \
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RW(Array, libraries_map) \
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RW(GrowableObjectArray, closure_functions) \
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RW(GrowableObjectArray, pending_classes) \
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R_(GrowableObjectArray, pending_deferred_loads) \
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R_(GrowableObjectArray, resume_capabilities) \
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R_(GrowableObjectArray, exit_listeners) \
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R_(GrowableObjectArray, error_listeners) \
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RW(Instance, stack_overflow) \
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RW(Instance, out_of_memory) \
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RW(UnhandledException, preallocated_unhandled_exception) \
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RW(StackTrace, preallocated_stack_trace) \
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RW(Function, lookup_port_handler) \
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RW(TypedData, empty_uint32_array) \
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RW(Function, handle_message_function) \
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RW(Function, growable_list_factory) \
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RW(Function, simple_instance_of_function) \
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RW(Function, simple_instance_of_true_function) \
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RW(Function, simple_instance_of_false_function) \
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RW(Function, async_clear_thread_stack_trace) \
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RW(Function, async_set_thread_stack_trace) \
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RW(Function, async_star_move_next_helper) \
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RW(Function, complete_on_async_return) \
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RW(Class, async_star_stream_controller) \
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RW(Array, library_load_error_table) \
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RW(Array, unique_dynamic_targets) \
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RW(GrowableObjectArray, token_objects) \
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RW(Array, token_objects_map) \
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RW(GrowableObjectArray, megamorphic_cache_table) \
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R_(Code, megamorphic_miss_code) \
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R_(Function, megamorphic_miss_function) \
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RW(Array, obfuscation_map) \
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RW(GrowableObjectArray, type_testing_stubs) \
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RW(GrowableObjectArray, changed_in_last_reload) \
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// Please remember the last entry must be referred in the 'to' function below.
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// The object store is a per isolate instance which stores references to
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// objects used by the VM.
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class ObjectStore {
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public:
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enum BootstrapLibraryId {
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#define MAKE_ID(Name, _) k##Name,
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FOR_EACH_BOOTSTRAP_LIBRARY(MAKE_ID)
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#undef MAKE_ID
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};
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~ObjectStore();
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#define DECLARE_GETTER(Type, name) \
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Raw##Type* name() const { return name##_; } \
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static intptr_t name##_offset() { return OFFSET_OF(ObjectStore, name##_); }
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#define DECLARE_GETTER_AND_SETTER(Type, name) \
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DECLARE_GETTER(Type, name) \
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void set_##name(const Type& value) { name##_ = value.raw(); }
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OBJECT_STORE_FIELD_LIST(DECLARE_GETTER, DECLARE_GETTER_AND_SETTER)
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#undef DECLARE_GETTER
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#undef DECLARE_GETTER_AND_SETTER
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RawLibrary* bootstrap_library(BootstrapLibraryId index) {
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switch (index) {
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#define MAKE_CASE(CamelName, name) \
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case k##CamelName: \
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return name##_library_;
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FOR_EACH_BOOTSTRAP_LIBRARY(MAKE_CASE)
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#undef MAKE_CASE
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default:
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UNREACHABLE();
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return Library::null();
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}
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}
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void set_bootstrap_library(BootstrapLibraryId index, const Library& value) {
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switch (index) {
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#define MAKE_CASE(CamelName, name) \
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case k##CamelName: \
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name##_library_ = value.raw(); \
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break;
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FOR_EACH_BOOTSTRAP_LIBRARY(MAKE_CASE)
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#undef MAKE_CASE
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default:
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UNREACHABLE();
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}
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}
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void clear_pending_deferred_loads() {
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pending_deferred_loads_ = GrowableObjectArray::New();
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}
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void SetMegamorphicMissHandler(const Code& code, const Function& func) {
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// Hold onto the code so it is traced and not detached from the function.
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megamorphic_miss_code_ = code.raw();
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megamorphic_miss_function_ = func.raw();
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}
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// Visit all object pointers.
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void VisitObjectPointers(ObjectPointerVisitor* visitor);
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// Called to initialize objects required by the vm but which invoke
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// dart code. If an error occurs the error object is returned otherwise
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// a null object is returned.
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RawError* PreallocateObjects();
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void InitKnownObjects();
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static void Init(Isolate* isolate);
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#ifndef PRODUCT
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void PrintToJSONObject(JSONObject* jsobj);
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#endif
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private:
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ObjectStore();
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// Finds a core library private method in Object.
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RawFunction* PrivateObjectLookup(const String& name);
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RawObject** from() { return reinterpret_cast<RawObject**>(&object_class_); }
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#define DECLARE_OBJECT_STORE_FIELD(type, name) Raw##type* name##_;
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OBJECT_STORE_FIELD_LIST(DECLARE_OBJECT_STORE_FIELD,
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DECLARE_OBJECT_STORE_FIELD)
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#undef DECLARE_OBJECT_STORE_FIELD
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RawObject** to() {
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return reinterpret_cast<RawObject**>(&changed_in_last_reload_);
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}
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RawObject** to_snapshot(Snapshot::Kind kind) {
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switch (kind) {
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case Snapshot::kFull:
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return reinterpret_cast<RawObject**>(&library_load_error_table_);
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case Snapshot::kFullJIT:
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case Snapshot::kFullAOT:
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return reinterpret_cast<RawObject**>(&megamorphic_miss_function_);
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case Snapshot::kScript:
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case Snapshot::kMessage:
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case Snapshot::kNone:
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case Snapshot::kInvalid:
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break;
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}
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UNREACHABLE();
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return NULL;
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}
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friend class Serializer;
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friend class Deserializer;
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DISALLOW_COPY_AND_ASSIGN(ObjectStore);
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};
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} // namespace dart
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#endif // RUNTIME_VM_OBJECT_STORE_H_
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