78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/*
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* Copyright (C) 2018-2025 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "shared/source/os_interface/linux/os_time_linux.h"
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#include "shared/source/execution_environment/root_device_environment.h"
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#include "shared/source/helpers/hw_info.h"
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#include "shared/source/os_interface/os_interface.h"
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#include <chrono>
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#include <time.h>
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namespace NEO {
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OSTimeLinux::OSTimeLinux(OSInterface &osInterface, std::unique_ptr<DeviceTime> deviceTime) {
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this->osInterface = &osInterface;
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auto hwInfo = osInterface.getDriverModel()->getHardwareInfo();
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if (hwInfo->capabilityTable.timestampValidBits < 64) {
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this->maxGpuTimeStamp = 1ull << hwInfo->capabilityTable.timestampValidBits;
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}
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resolutionFunc = &clock_getres;
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getTimeFunc = &clock_gettime;
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this->deviceTime = std::move(deviceTime);
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}
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bool OSTimeLinux::getCpuTime(uint64_t *timestamp) {
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struct timespec ts {};
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if (getTimeFunc(CLOCK_MONOTONIC_RAW, &ts)) {
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return false;
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}
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*timestamp = (uint64_t)ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec;
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return true;
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}
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bool OSTime::getCpuTimeHost(uint64_t *timestamp) {
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struct timespec ts {};
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auto ret = clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
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*timestamp = (uint64_t)ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec;
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return ret;
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}
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double OSTimeLinux::getHostTimerResolution() const {
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struct timespec ts {};
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if (resolutionFunc(CLOCK_MONOTONIC_RAW, &ts)) {
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return 0;
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}
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return static_cast<double>(ts.tv_nsec + ts.tv_sec * NSEC_PER_SEC);
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}
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uint64_t OSTimeLinux::getCpuRawTimestamp() {
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uint64_t timesInNsec = 0;
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uint64_t ticksInNsec = 0;
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if (!getCpuTime(×InNsec)) {
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return 0;
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}
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ticksInNsec = static_cast<uint64_t>(getHostTimerResolution());
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if (ticksInNsec == 0) {
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return 0;
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}
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return timesInNsec / ticksInNsec;
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}
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std::unique_ptr<OSTime> OSTimeLinux::create(OSInterface &osInterface, std::unique_ptr<DeviceTime> deviceTime) {
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return std::unique_ptr<OSTime>(new OSTimeLinux(osInterface, std::move(deviceTime)));
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}
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} // namespace NEO
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