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/*
* Copyright (C) 2018-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include <cstdint>
#include <memory>
#include <optional>
#define NSEC_PER_SEC (1000000000ULL)
#define NSEC_PER_MSEC (NSEC_PER_SEC / 1000)
namespace NEO {
class OSInterface;
struct HardwareInfo;
struct TimeStampData {
uint64_t gpuTimeStamp; // GPU time in counter ticks
uint64_t cpuTimeinNS; // CPU time in ns
};
enum class TimeQueryStatus : uint32_t {
success,
unsupportedFeature,
deviceLost
};
class OSTime;
class DeviceTime {
public:
virtual ~DeviceTime() = default;
TimeQueryStatus getGpuCpuTime(TimeStampData *pGpuCpuTime, OSTime *osTime, bool forceKmdCall);
virtual TimeQueryStatus getGpuCpuTimeImpl(TimeStampData *pGpuCpuTime, OSTime *osTime);
virtual double getDynamicDeviceTimerResolution() const;
virtual uint64_t getDynamicDeviceTimerClock() const;
virtual bool isTimestampsRefreshEnabled() const;
TimeQueryStatus getGpuCpuTimestamps(TimeStampData *timeStamp, OSTime *osTime, bool forceKmdCall);
void setDeviceTimerResolution();
void setRefreshTimestampsFlag() {
refreshTimestamps = true;
}
uint64_t getTimestampRefreshTimeout() const {
return timestampRefreshTimeoutNS;
};
std::optional<uint64_t> initialGpuTimeStamp{};
bool waitingForGpuTimeStampOverflow = false;
uint64_t gpuTimeStampOverflowCounter = 0;
double deviceTimerResolution = 0;
const uint64_t timestampRefreshMinTimeoutNS = NSEC_PER_MSEC; // 1ms
const uint64_t timestampRefreshMaxTimeoutNS = NSEC_PER_SEC; // 1s
uint64_t timestampRefreshTimeoutNS = NSEC_PER_MSEC * 100; // 100ms
bool refreshTimestamps = true;
TimeStampData fetchedTimestamps{};
};
class OSTime {
public:
static std::unique_ptr<OSTime> create(OSInterface *osInterface);
OSTime(std::unique_ptr<DeviceTime> deviceTime);
virtual ~OSTime() = default;
virtual bool getCpuTime(uint64_t *timeStamp);
virtual bool getCpuTimeHost(uint64_t *timeStamp);
virtual double getHostTimerResolution() const;
virtual uint64_t getCpuRawTimestamp();
static double getDeviceTimerResolution();
TimeQueryStatus getGpuCpuTime(TimeStampData *gpuCpuTime, bool forceKmdCall) {
return deviceTime->getGpuCpuTime(gpuCpuTime, this, forceKmdCall);
}
TimeQueryStatus getGpuCpuTime(TimeStampData *gpuCpuTime) {
return deviceTime->getGpuCpuTime(gpuCpuTime, this, false);
}
double getDynamicDeviceTimerResolution() const {
return deviceTime->getDynamicDeviceTimerResolution();
}
uint64_t getDynamicDeviceTimerClock() const {
return deviceTime->getDynamicDeviceTimerClock();
}
uint64_t getMaxGpuTimeStamp() const { return maxGpuTimeStamp; }
void setDeviceTimerResolution() const {
deviceTime->setDeviceTimerResolution();
}
void setRefreshTimestampsFlag() const {
deviceTime->setRefreshTimestampsFlag();
}
uint64_t getTimestampRefreshTimeout() const {
return deviceTime->getTimestampRefreshTimeout();
}
protected:
OSTime() = default;
OSInterface *osInterface = nullptr;
std::unique_ptr<DeviceTime> deviceTime;
uint64_t maxGpuTimeStamp = 0;
};
} // namespace NEO
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