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juce_AudioProcessLoadMeasurer.cpp
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2022 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. Permission
To use, copy, modify, and/or distribute this software for any purpose with or
without fee is hereby granted provided that the above copyright notice and
this permission notice appear in all copies.
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
AudioProcessLoadMeasurer::AudioProcessLoadMeasurer() = default;
AudioProcessLoadMeasurer::~AudioProcessLoadMeasurer() = default;
void AudioProcessLoadMeasurer::reset()
{
reset (0, 0);
}
void AudioProcessLoadMeasurer::reset (double sampleRate, int blockSize)
{
const SpinLock::ScopedLockType lock (mutex);
cpuUsageProportion = 0;
xruns = 0;
samplesPerBlock = blockSize;
msPerSample = (sampleRate > 0.0 && blockSize > 0) ? 1000.0 / sampleRate : 0;
}
void AudioProcessLoadMeasurer::registerBlockRenderTime (double milliseconds)
{
const SpinLock::ScopedTryLockType lock (mutex);
if (lock.isLocked())
registerRenderTimeLocked (milliseconds, samplesPerBlock);
}
void AudioProcessLoadMeasurer::registerRenderTime (double milliseconds, int numSamples)
{
const SpinLock::ScopedTryLockType lock (mutex);
if (lock.isLocked())
registerRenderTimeLocked (milliseconds, numSamples);
}
void AudioProcessLoadMeasurer::registerRenderTimeLocked (double milliseconds, int numSamples)
{
if (approximatelyEqual (msPerSample, 0.0))
return;
const auto maxMilliseconds = numSamples * msPerSample;
const auto usedProportion = milliseconds / maxMilliseconds;
const auto filterAmount = 0.2;
const auto proportion = cpuUsageProportion.load();
cpuUsageProportion = proportion + filterAmount * (usedProportion - proportion);
if (milliseconds > maxMilliseconds)
++xruns;
}
double AudioProcessLoadMeasurer::getLoadAsProportion() const { return jlimit (0.0, 1.0, cpuUsageProportion.load()); }
double AudioProcessLoadMeasurer::getLoadAsPercentage() const { return 100.0 * getLoadAsProportion(); }
int AudioProcessLoadMeasurer::getXRunCount() const { return xruns; }
AudioProcessLoadMeasurer::ScopedTimer::ScopedTimer (AudioProcessLoadMeasurer& p)
: ScopedTimer (p, p.samplesPerBlock)
{
}
AudioProcessLoadMeasurer::ScopedTimer::ScopedTimer (AudioProcessLoadMeasurer& p, int numSamplesInBlock)
: owner (p), startTime (Time::getMillisecondCounterHiRes()), samplesInBlock (numSamplesInBlock)
{
// numSamplesInBlock should never be zero. Did you remember to call AudioProcessLoadMeasurer::reset(),
// passing the expected samples per block?
jassert (numSamplesInBlock);
}
AudioProcessLoadMeasurer::ScopedTimer::~ScopedTimer()
{
owner.registerRenderTime (Time::getMillisecondCounterHiRes() - startTime, samplesInBlock);
}
} // namespace juce
juce::AudioProcessLoadMeasurer
Definition juce_AudioProcessLoadMeasurer.h:34
juce::AudioProcessLoadMeasurer::~AudioProcessLoadMeasurer
~AudioProcessLoadMeasurer()
juce::AudioProcessLoadMeasurer::getLoadAsPercentage
double getLoadAsPercentage() const
Definition juce_AudioProcessLoadMeasurer.cpp:77
juce::AudioProcessLoadMeasurer::registerBlockRenderTime
void registerBlockRenderTime(double millisecondsTaken)
Definition juce_AudioProcessLoadMeasurer.cpp:45
juce::AudioProcessLoadMeasurer::registerRenderTime
void registerRenderTime(double millisecondsTaken, int numSamples)
Definition juce_AudioProcessLoadMeasurer.cpp:53
juce::AudioProcessLoadMeasurer::getXRunCount
int getXRunCount() const
Definition juce_AudioProcessLoadMeasurer.cpp:79
juce::AudioProcessLoadMeasurer::reset
void reset()
Definition juce_AudioProcessLoadMeasurer.cpp:29
juce::AudioProcessLoadMeasurer::getLoadAsProportion
double getLoadAsProportion() const
Definition juce_AudioProcessLoadMeasurer.cpp:76
juce::GenericScopedTryLock::isLocked
bool isLocked() const noexcept
Definition juce_ScopedLock.h:231
juce::SpinLock::ScopedTryLockType
GenericScopedTryLock< SpinLock > ScopedTryLockType
Definition juce_SpinLock.h:79
juce::SpinLock::ScopedLockType
GenericScopedLock< SpinLock > ScopedLockType
Definition juce_SpinLock.h:73
juce::Time::getMillisecondCounterHiRes
static double getMillisecondCounterHiRes() noexcept