mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-30 16:22:00 +00:00
132 lines
4.5 KiB
C++
132 lines
4.5 KiB
C++
/* -*- 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/BitSet.h"
|
|
#include "mozilla/Observer.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
#include "mozilla/UniquePtr.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
|
|
};
|
|
|
|
/**
|
|
* Represents a workload shared by a group of threads that should be completed
|
|
* in a target duration each cycle.
|
|
*
|
|
* This is created using hal::CreatePerformanceHintSession(). Each cycle, the
|
|
* actual work duration should be reported using ReportActualWorkDuration(). The
|
|
* system can then adjust the scheduling accordingly in order to achieve the
|
|
* target.
|
|
*/
|
|
class PerformanceHintSession {
|
|
public:
|
|
virtual ~PerformanceHintSession() = default;
|
|
|
|
// Updates the session's target work duration for each cycle.
|
|
virtual void UpdateTargetWorkDuration(TimeDuration aDuration) = 0;
|
|
|
|
// Reports the session's actual work duration for a cycle.
|
|
virtual void ReportActualWorkDuration(TimeDuration aDuration) = 0;
|
|
};
|
|
|
|
/**
|
|
* Categorizes the CPUs on the system in to big, medium, and little classes.
|
|
*
|
|
* A set bit in each bitset indicates that the CPU of that index belongs to that
|
|
* class. If the CPUs are fully homogeneous they are all categorized as big. If
|
|
* there are only 2 classes, they are categorized as either big or little.
|
|
* Finally, if there are >= 3 classes, the remainder will be categorized as
|
|
* medium.
|
|
*
|
|
* If there are more than MAX_CPUS present we are unable to represent this
|
|
* information.
|
|
*/
|
|
struct HeterogeneousCpuInfo {
|
|
// We use a max of 32 because this was initially implemented only for Android
|
|
// where we are unlikely to need more CPUs than that, and it simplifies
|
|
// dealing with cpu_set_t as CPU_SETSIZE is 32 on 32-bit Android.
|
|
// If there are more than 32 CPU cores, the implementation should try to fill
|
|
// first mBigCpus before adding anything to mMediumCpus or mLittleCpus.
|
|
static const size_t MAX_CPUS = 32;
|
|
size_t mTotalNumCpus;
|
|
mozilla::BitSet<MAX_CPUS> mLittleCpus;
|
|
mozilla::BitSet<MAX_CPUS> mMediumCpus;
|
|
mozilla::BitSet<MAX_CPUS> mBigCpus;
|
|
};
|
|
|
|
} // 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
|