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// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_OBJECTS_MANAGED_INL_H_
#define V8_OBJECTS_MANAGED_INL_H_
#include "src/handles/global-handles-inl.h"
#include "src/objects/managed.h"
namespace v8 {
namespace internal {
// static
template <class CppType>
template <typename... Args>
Handle<Managed<CppType>> Managed<CppType>::Allocate(Isolate* isolate,
size_t estimated_size,
Args&&... args) {
return FromSharedPtr(isolate, estimated_size,
std::make_shared<CppType>(std::forward<Args>(args)...));
}
// static
template <class CppType>
Handle<Managed<CppType>> Managed<CppType>::FromRawPtr(Isolate* isolate,
size_t estimated_size,
CppType* ptr) {
return FromSharedPtr(isolate, estimated_size, std::shared_ptr<CppType>{ptr});
}
// static
template <class CppType>
Handle<Managed<CppType>> Managed<CppType>::FromUniquePtr(
Isolate* isolate, size_t estimated_size,
std::unique_ptr<CppType> unique_ptr, AllocationType allocation_type) {
return FromSharedPtr(isolate, estimated_size, std::move(unique_ptr),
allocation_type);
}
// static
template <class CppType>
Handle<Managed<CppType>> Managed<CppType>::FromSharedPtr(
Isolate* isolate, size_t estimated_size,
std::shared_ptr<CppType> shared_ptr, AllocationType allocation_type) {
reinterpret_cast<v8::Isolate*>(isolate)
->AdjustAmountOfExternalAllocatedMemory(estimated_size);
auto destructor = new ManagedPtrDestructor(
estimated_size, new std::shared_ptr<CppType>{std::move(shared_ptr)},
Destructor);
Handle<Managed<CppType>> handle =
Handle<Managed<CppType>>::cast(isolate->factory()->NewForeign(
reinterpret_cast<Address>(destructor), allocation_type));
Handle<Object> global_handle = isolate->global_handles()->Create(*handle);
destructor->global_handle_location_ = global_handle.location();
GlobalHandles::MakeWeak(destructor->global_handle_location_, destructor,
&ManagedObjectFinalizer,
v8::WeakCallbackType::kParameter);
isolate->RegisterManagedPtrDestructor(destructor);
return handle;
}
} // namespace internal
} // namespace v8
#endif // V8_OBJECTS_MANAGED_INL_H_