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// Copyright 2022 The Chromium 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 IPCZ_SRC_IPCZ_BUFFER_ID_H_
#define IPCZ_SRC_IPCZ_BUFFER_ID_H_
#include <cstdint>
#include "util/strong_alias.h"
namespace ipcz {
// Identifies a shared memory buffer scoped to a NodeLink and owned by its
// NodeLinkMemory via a BufferPool. New BufferIds are allocated atomically by
// either side of the NodeLink.
using BufferId = StrongAlias<class BufferIdTag, uint64_t>;
constexpr BufferId kInvalidBufferId{~0};
} // namespace ipcz
#endif // IPCZ_SRC_IPCZ_BUFFER_ID_H_
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