blob: 8127b6bff6f6c3a1e091017228407958d0aaf580 [file] [log] [blame]
// Copyright (c) 2011 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.
// The avrt namespace encapsulates the details needed to support MMCSS.
// The Multimedia Class Scheduler service (MMCSS) enables multimedia
// applications to ensure that their time-sensitive processing receives
// prioritized access to CPU resources. This service enables multimedia
// applications to utilize as much of the CPU as possible without denying
// CPU resources to lower-priority applications.
// MMCSS requires Windows Vista or higher and that the Avrt DLL is loaded.
// TODO(henrika): refactor and merge into existing thread implementation
// for Windows to ensure that MMCSS can be enabled for all threads.
#include <windows.h>
#include <avrt.h>
#include "base/basictypes.h"
namespace avrt {
// Loads the Avrt.dll which is available on Windows Vista and later.
bool Initialize();
// Function wrappers for the underlying MMCSS functions.
bool AvRevertMmThreadCharacteristics(HANDLE avrt_handle);
HANDLE AvSetMmThreadCharacteristics(const wchar_t* task_name,
DWORD* task_index);
bool AvSetMmThreadPriority(HANDLE avrt_handle, AVRT_PRIORITY priority);
} // namespace avrt