chromium/media/mojo/services/deferred_destroy_unique_receiver_set.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_MOJO_SERVICES_DEFERRED_DESTROY_UNIQUE_RECEIVER_SET_H_
#define MEDIA_MOJO_SERVICES_DEFERRED_DESTROY_UNIQUE_RECEIVER_SET_H_

#include <stdint.h>

#include <map>
#include <memory>

#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/memory/weak_ptr.h"
#include "base/task/bind_post_task.h"
#include "mojo/public/cpp/bindings/unique_receiver_set.h"

namespace media {

// A class that can be deferred destroyed by its owner. For example, when used
// in DeferredDestroyUniqueReceiverSet.
template <typename Interface>
class DeferredDestroy : public Interface { … };

// Similar to mojo::UniqueReceiverSet, but provide a way to defer the
// destruction of the interface implementation:
// - When disconnection happened on a receiver, the receiver is immediately
// destroyed and removed from the set. The interface implementation will be
// destroyed when the DestroyCallback is called.
// - When the DeferredDestroyUniqueReceiverSet is destructed, all outstanding
// receivers and interface implementations in the set are destroyed immediately
// without any deferral.
template <typename Interface>
class DeferredDestroyUniqueReceiverSet { … };

}  // namespace media

#endif  // MEDIA_MOJO_SERVICES_DEFERRED_DESTROY_UNIQUE_RECEIVER_SET_H_