Package edu.wpi.first.wpilibj

Class Tracer

java.lang.Object

edu.wpi.first.wpilibj.Tracer

public class Tracer
extends Object

A class for keeping track of how much time it takes for different parts of code to execute. This is done with epochs, that are added by calls to addEpoch(String), and can be printed with a call to printEpochs().

Epochs are a way to partition the time elapsed so that when overruns occur, one can determine which parts of an operation consumed the most time.

Constructor Summary

Constructors

Constructor	Description
Tracer()	Tracer constructor.

Method Summary

Modifier and Type	Method	Description
void	addEpoch(String epochName)	Adds time since last epoch to the list printed by printEpochs().
void	clearEpochs()	Clears all epochs.
void	printEpochs()	Prints list of epochs added so far and their times to the DriverStation.
void	printEpochs(Consumer<String> output)	Prints list of epochs added so far and their times to the entered String consumer.
void	resetTimer()	Restarts the epoch timer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Tracer

public Tracer()

Tracer constructor.

Method Details

clearEpochs

public void clearEpochs()

Clears all epochs.

resetTimer

public void resetTimer()

Restarts the epoch timer.

addEpoch

public void addEpoch(String epochName)

Adds time since last epoch to the list printed by printEpochs().

Epochs are a way to partition the time elapsed so that when overruns occur, one can determine which parts of an operation consumed the most time.

This should be called immediately after execution has finished, with a call to this method or resetTimer() before execution.

Parameters:

epochName - The name to associate with the epoch.

printEpochs

public void printEpochs()

Prints list of epochs added so far and their times to the DriverStation.

printEpochs

public void printEpochs(Consumer<String> output)

Prints list of epochs added so far and their times to the entered String consumer.

This overload can be useful for logging to a file, etc.

Parameters:

output - the stream that the output is sent to