123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
/***
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Copyright (C) 2023 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: CpuLoadSampler.cpp
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Date: 2023-10-28
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "AuCpuLoadSampler.hpp"
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namespace Aurora::HWInfo
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{
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CpuLoadSamplerImpl::CpuLoadSamplerImpl(AuUInt32 uMinSamplePeriodMS,
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bool bThreadMode) :
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uMinSamplePeriod(uMinSamplePeriodMS),
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bThreadMode(bThreadMode)
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{
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}
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CpuLoadSamplerImpl::~CpuLoadSamplerImpl()
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{
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}
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double CpuLoadSamplerImpl::GetLoad()
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{
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if (!this->bThreadMode)
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{
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return this->processState.GetLoad(this->uMinSamplePeriod, false);
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}
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else
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{
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return this->threadState->GetLoad(this->uMinSamplePeriod, true);
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}
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}
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double CpuLoadSamplerState::GetLoad(AuUInt32 uMinSamplePeriod, bool bThread)
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{
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AuUInt64 now[2] = {
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AuTime::SteadyClockNS(),
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bThread ? AuTime::ThreadClockNS() : AuTime::ProcessClockNS()
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};
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double dDeltaSteady = now[0] - this->uPrevTimes[0];
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double dDeltaProcess = now[1] - this->uPrevTimes[1];
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double dUsage = 0;
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double dMinSamplePeriod = double(AuMSToNS<AuUInt64>(uMinSamplePeriod));
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if (!uMinSamplePeriod ||
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dDeltaSteady >= dMinSamplePeriod)
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{
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dUsage = dDeltaProcess / dDeltaSteady;
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this->uPrevTimes[1] = now[1];
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this->uPrevTimes[0] = now[0];
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this->dPrevLoad = dUsage;
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}
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else
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{
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dUsage = dDeltaProcess / dDeltaSteady;
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#if 0
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dUsage *= dDeltaSteady / double(dMinSamplePeriod);
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if (this->dPrevLoad) dUsage = dUsage + this->dPrevLoad / 2.0;
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#else
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if (this->dPrevLoad)
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{
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double dFrameDelta = dDeltaSteady / double(dMinSamplePeriod);
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double dFrameDeltaInverse = 1.0 - dFrameDelta;
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dUsage *= dFrameDelta;
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dUsage += this->dPrevLoad * dFrameDeltaInverse;
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}
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else
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{
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dUsage *= dDeltaSteady / double(dMinSamplePeriod);
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}
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#endif
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}
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if (!bool(this->uPrevTimes[0]))
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{
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this->uPrevTimes[1] = now[1];
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this->uPrevTimes[0] = now[0];
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return 0;
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}
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else
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{
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dUsage = dUsage * 100.0;
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if (dUsage > 100.0)
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{
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return 100.0;
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}
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else if (dUsage < 0.0)
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{
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return 0.0;
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}
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else
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{
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return dUsage;
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}
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}
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}
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AUKN_SYM double GetProcessCPUUtilization()
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{
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static CpuLoadSamplerImpl gSampler(AuSToMS<AuUInt32>(1), false);
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return gSampler.GetLoad();
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}
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AUKN_SYM ICpuLoadSampler *CpuLoadSamplerNew(AuUInt32 uMinSamplePeriodMS,
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bool bThreadMode)
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{
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return _new CpuLoadSamplerImpl(uMinSamplePeriodMS, bThreadMode);
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}
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AUKN_SYM void CpuLoadSamplerRelease(ICpuLoadSampler *pEvent)
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{
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AuSafeDelete<CpuLoadSamplerImpl *>(pEvent);
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}
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AUROXTL_INTERFACE_SOO_SRC_EX(AURORA_SYMBOL_EXPORT, CpuLoadSampler, CpuLoadSamplerImpl, (AuUInt32, uMinSamplePeriod), (bool, bThreadMode))
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} |