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// Copyright 2020 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.
#include "src/heap/cppgc/prefinalizer-handler.h"
#include <algorithm>
#include <memory>
#include "src/base/platform/platform.h"
#include "src/heap/cppgc/heap-page-inl.h"
#include "src/heap/cppgc/heap.h"
namespace cppgc {
namespace internal {
// static
void PreFinalizerRegistrationDispatcher::RegisterPrefinalizer(
PreFinalizer pre_finalizer) {
BasePage::FromPayload(pre_finalizer.object)
->heap()
->prefinalizer_handler()
->RegisterPrefinalizer(pre_finalizer);
}
bool PreFinalizerRegistrationDispatcher::PreFinalizer::operator==(
const PreFinalizer& other) {
return (object == other.object) && (callback == other.callback);
}
PreFinalizerHandler::PreFinalizerHandler()
#ifdef DEBUG
: creation_thread_id_(v8::base::OS::GetCurrentThreadId())
#endif
{
}
void PreFinalizerHandler::RegisterPrefinalizer(PreFinalizer pre_finalizer) {
DCHECK(CurrentThreadIsCreationThread());
DCHECK_EQ(ordered_pre_finalizers_.end(),
std::find(ordered_pre_finalizers_.begin(),
ordered_pre_finalizers_.end(), pre_finalizer));
ordered_pre_finalizers_.push_back(pre_finalizer);
}
void PreFinalizerHandler::InvokePreFinalizers() {
DCHECK(CurrentThreadIsCreationThread());
LivenessBroker liveness_broker = LivenessBrokerFactory::Create();
ordered_pre_finalizers_.erase(
ordered_pre_finalizers_.begin(),
std::remove_if(ordered_pre_finalizers_.rbegin(),
ordered_pre_finalizers_.rend(),
[liveness_broker](const PreFinalizer& pf) {
return (pf.callback)(liveness_broker, pf.object);
})
.base());
ordered_pre_finalizers_.shrink_to_fit();
}
bool PreFinalizerHandler::CurrentThreadIsCreationThread() {
#ifdef DEBUG
return creation_thread_id_ == v8::base::OS::GetCurrentThreadId();
#else
return true;
#endif
}
} // namespace internal
} // namespace cppgc
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