juce::PerformanceCounter Class Reference

A timer for measuring performance of code and dumping the results to a file. More...

#include <juce_PerformanceCounter.h>

Collaboration diagram for juce::PerformanceCounter:

Classes
struct	Statistics
	Holds the current statistics. More...

Public Member Functions
	PerformanceCounter (const String &counterName, int runsPerPrintout=100, const File &loggingFile=File())
	Creates a PerformanceCounter object. More...
	~PerformanceCounter ()
	Destructor. More...
Statistics	getStatisticsAndReset ()
	Returns a copy of the current stats, and resets the internal counter. More...
void	printStatistics ()
	Dumps the current metrics to the debugger output and to a file. More...
void	start () noexcept
	Starts timing. More...
bool	stop ()
	Stops timing and prints out the results. More...

Private Attributes
File	outputFile
int64	runsPerPrint
int64	startTime
Statistics	stats

Detailed Description

A timer for measuring performance of code and dumping the results to a file.

e.g.

PerformanceCounter pc ("fish", 50, "/temp/myfishlog.txt");
 
for (;;)
{
    pc.start();
 
    doSomethingFishy();
 
    pc.stop();
}

In this example, the time of each period between calling start/stop will be measured and averaged over 50 runs, and the results printed to a file every 50 times round the loop.

@tags{Core}

Constructor & Destructor Documentation

PerformanceCounter()

juce::PerformanceCounter::PerformanceCounter	(	const String &	counterName,
		int	runsPerPrintout = 100,
		const File &	loggingFile = File()
	)

Creates a PerformanceCounter object.

Parameters

counterName	the name used when printing out the statistics
runsPerPrintout	the number of start/stop iterations before calling printStatistics()
loggingFile	a file to dump the results to - if this is File(), the results are just written to the debugger output

~PerformanceCounter()

juce::PerformanceCounter::~PerformanceCounter

(

)

Destructor.

Member Function Documentation

getStatisticsAndReset()

Statistics juce::PerformanceCounter::getStatisticsAndReset

(

)

Returns a copy of the current stats, and resets the internal counter.

printStatistics()

void juce::PerformanceCounter::printStatistics

(

)

Dumps the current metrics to the debugger output and to a file.

As well as using Logger::outputDebugString to print the results, this will write then to the file specified in the constructor (if this was valid).

start()

void juce::PerformanceCounter::start ( )

noexcept

Starts timing.

See also

stop

stop()

bool juce::PerformanceCounter::stop

(

)

Stops timing and prints out the results.

The number of iterations before doing a printout of the results is set in the constructor.

See also

start

Member Data Documentation

outputFile

File juce::PerformanceCounter::outputFile

private

runsPerPrint

int64 juce::PerformanceCounter::runsPerPrint

private

startTime

int64 juce::PerformanceCounter::startTime

private

stats

Statistics juce::PerformanceCounter::stats

private

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The documentation for this class was generated from the following file:

• juce_PerformanceCounter.h