com.threerings.util
Class MethodProfiler

java.lang.Object
  com.threerings.util.MethodProfiler

public class MethodProfiler
extends Object

Records the times that it takes to call methods. Allows one simultaneous method call per thread (no nested calls). Uses java's nano second timer. Results are logged by method name.

Nested Class Summary

static class

MethodProfiler.Result The results of sampling for a single method.

Constructor Summary

MethodProfiler()

Method Summary

void	enter(String methodName) Notes that the calling thread has entered the given method and records the time stamp.
void	exit(String methodName) Notes that the calling thread has exited the given method and records the time delta since entry.
void	exitAndClear(String methodName) Clears out the profile for the current thread, and invokes the exit of the top-level method.
Map<String,MethodProfiler.Result>	getResults() Gets all method results so far.
static void	main(String[] args) Runs some very basic tests of the method profiler.
void	reset() Clears all recorded methods and times.
void	swap(String methodName) Transition to a new method or segment.

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodProfiler

public MethodProfiler()

Method Detail

main

public static void main(String[] args)
                 throws InterruptedException

Runs some very basic tests of the method profiler.

Throws:

InterruptedException

getResults

public Map<String,MethodProfiler.Result> getResults()

Gets all method results so far.

enter

public void enter(String methodName)

Notes that the calling thread has entered the given method and records the time stamp.

exit

public void exit(String methodName)

Notes that the calling thread has exited the given method and records the time delta since entry. The method parameter is not strictly necessary but allows some error checking. If not null, it must match the most recent value given to enter(java.lang.String) for the calling thread.

swap

public void swap(String methodName)

Transition to a new method or segment. Exits the current one and enters the given one.

exitAndClear

public void exitAndClear(String methodName)

Clears out the profile for the current thread, and invokes the exit of the top-level method. This allows callers to use one try... finally block in their top-level method without skewing the results for nested methods that may have thrown exceptions and/or not called exit(java.lang.String).

reset

public void reset()

Clears all recorded methods and times.