File: discardable_shared_memory_manager.mojom

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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module discardable_memory.mojom;

import "mojo/public/mojom/base/shared_memory.mojom";

// This interface is used for allocating discardable shared memory from browser
// process. For mus+ash, this service will live in mus process.
interface DiscardableSharedMemoryManager {
  // Allocate a locked discardable shared memory segment.
  AllocateLockedDiscardableSharedMemory(
      uint32 size,
      int32 id) => (mojo_base.mojom.UnsafeSharedMemoryRegion? region);
  // Notify manager that a memory segment has been deleted.
  DeletedDiscardableSharedMemory(int32 id);
};