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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_hal_Types_h
#define mozilla_hal_Types_h
#include "ipc/EnumSerializer.h"
#include "mozilla/Observer.h"
namespace mozilla {
namespace hal {
/**
* These constants specify special values for content process IDs. You can get
* a content process ID by calling ContentChild::GetID() or
* ContentParent::GetChildID().
*/
const uint64_t CONTENT_PROCESS_ID_UNKNOWN = uint64_t(-1);
const uint64_t CONTENT_PROCESS_ID_MAIN = 0;
// Note that we rely on the order of this enum's entries. Higher priorities
// should have larger int values.
enum ProcessPriority {
PROCESS_PRIORITY_UNKNOWN = -1,
PROCESS_PRIORITY_BACKGROUND,
PROCESS_PRIORITY_BACKGROUND_PERCEIVABLE,
PROCESS_PRIORITY_FOREGROUND_KEYBOARD,
// The special class for the preallocated process, high memory priority but
// low CPU priority.
PROCESS_PRIORITY_PREALLOC,
// Any priority greater than or equal to FOREGROUND is considered
// "foreground" for the purposes of priority testing, for example
// CurrentProcessIsForeground().
PROCESS_PRIORITY_FOREGROUND,
PROCESS_PRIORITY_FOREGROUND_HIGH,
PROCESS_PRIORITY_PARENT_PROCESS,
NUM_PROCESS_PRIORITY
};
/**
* Convert a ProcessPriority enum value to a string. The strings returned by
* this function are statically allocated; do not attempt to free one!
*
* If you pass an unknown process priority, we fatally assert in debug
* builds and otherwise return "???".
*/
const char* ProcessPriorityToString(ProcessPriority aPriority);
/**
* Used by ModifyWakeLock
*/
enum WakeLockControl {
WAKE_LOCK_REMOVE_ONE = -1,
WAKE_LOCK_NO_CHANGE = 0,
WAKE_LOCK_ADD_ONE = 1,
NUM_WAKE_LOCK
};
} // namespace hal
} // namespace mozilla
namespace IPC {
/**
* WakeLockControl serializer.
*/
template <>
struct ParamTraits<mozilla::hal::WakeLockControl>
: public ContiguousEnumSerializer<mozilla::hal::WakeLockControl,
mozilla::hal::WAKE_LOCK_REMOVE_ONE,
mozilla::hal::NUM_WAKE_LOCK> {};
template <>
struct ParamTraits<mozilla::hal::ProcessPriority>
: public ContiguousEnumSerializer<mozilla::hal::ProcessPriority,
mozilla::hal::PROCESS_PRIORITY_UNKNOWN,
mozilla::hal::NUM_PROCESS_PRIORITY> {};
} // namespace IPC
#endif // mozilla_hal_Types_h