com.sun.btrace.profiling

Class MethodInvocationProfiler

java.lang.Object

com.sun.btrace.Profiler

com.sun.btrace.profiling.MethodInvocationProfiler

All Implemented Interfaces:

Profiler.MBeanValueProvider

public class MethodInvocationProfiler
extends Profiler
implements Profiler.MBeanValueProvider

Implementation of Profiler

Nested Class Summary

Nested classes/interfaces inherited from class com.sun.btrace.Profiler

Profiler.MBeanValueProvider, Profiler.Record, Profiler.Snapshot

Field Summary

Fields inherited from class com.sun.btrace.Profiler

START_TIME

Constructor Summary

Constructors

Constructor and Description
MethodInvocationProfiler(int expectedMethodCnt)

Method Summary

Modifier and Type	Method and Description
Profiler.Snapshot	getMBeanValue()
void	recordEntry(java.lang.String blockName) Records the event of entering an execution unit (eg.
void	recordExit(java.lang.String blockName, long duration) Records the event of exiting an execution unit (eg.
void	reset() Resets all the collected data
Profiler.Snapshot	snapshot(boolean reset) Creates an immutable snapshot of the collected profiling data. Makes it possible to reset the profiler after creating the snapshot, eventually

Methods inherited from class com.sun.btrace.Profiler

snapshot

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodInvocationProfiler

public MethodInvocationProfiler(int expectedMethodCnt)

Method Detail

recordEntry

public void recordEntry(java.lang.String blockName)

Description copied from class: Profiler

Records the event of entering an execution unit (eg. method)
Must be paired with a call to Profiler.recordExit(java.lang.String, long) with the same blockName, eventually

Specified by:

recordEntry in class Profiler

Parameters:

blockName - The execution unit identifier (eg. method FQN)

recordExit

public void recordExit(java.lang.String blockName,
                       long duration)

Description copied from class: Profiler

Records the event of exiting an execution unit (eg. method)
Must be preceded by a call to Profiler.recordEntry(java.lang.String) with the same blockName

Specified by:

recordExit in class Profiler

Parameters:

blockName - The execution unit identifier (eg. method FQN)

duration - Invocation duration in nanoseconds

reset

public void reset()

Description copied from class: Profiler

Resets all the collected data

Specified by:

reset in class Profiler

snapshot

public Profiler.Snapshot snapshot(boolean reset)

Description copied from class: Profiler

Creates an immutable snapshot of the collected profiling data.
Makes it possible to reset the profiler after creating the snapshot, eventually

Specified by:

snapshot in class Profiler

Parameters:

reset - Signals the profiler to perform reset right after getting the snapshot (in an atomic transaction)

Returns:

Returns the immutable Profiler.Snapshot instance

getMBeanValue

public Profiler.Snapshot getMBeanValue()

Specified by:

getMBeanValue in interface Profiler.MBeanValueProvider