chromium/third_party/blink/renderer/platform/heap/heap_barrier_callback.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_HEAP_BARRIER_CALLBACK_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_HEAP_BARRIER_CALLBACK_H_

#include <concepts>
#include <memory>
#include <type_traits>
#include <utility>

#include "base/check.h"
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/thread_annotations.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"

namespace blink {

namespace internal {

template <typename T, typename DoneArg>
class BarrierCallbackInfo { … };

template <typename T>
void ShouldNeverRun(T t) { … }

}  // namespace internal

// This is a near-copy of base/barrier_callback.h, except that it is stores
// the result in a HeapVector so that the results can be GarbageCollected
// objects.
template <typename T,
          typename RawArg = std::remove_cvref_t<T>,
          typename DoneArg = HeapVector<Member<RawArg>>,
          template <typename>
          class CallbackType>
  requires(
      std::same_as<HeapVector<Member<RawArg>>, std::remove_cvref_t<DoneArg>>)
base::RepeatingCallback<void(T*)> HeapBarrierCallback(
    wtf_size_t num_callbacks,
    CallbackType<void(DoneArg)> done_callback) { … }

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_HEAP_HEAP_BARRIER_CALLBACK_H_