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Sampling Class Reference

CPU Sampling. More...

#include <sampling.h>

List of all members.

Public Methods
	Sampling (JVMPI_Interface *jvmpi)
	Constructor. More...
	~Sampling ()
	Destructor.
int	startThread (int turnedOn)
	Starts sampling thread. More...
void	terminateThread ()
	Terminates sampling thread. More...
int	isTerminated ()
	Returns true/false in dependance on sampling thread has been terminated or not yet. More...
Private Types
enum	CMD
	thread commands.
Private Methods
void	main ()
	Main thread function.
void	doOneSample ()
	Performs one sample.
Static Private Methods
void	samplingMain (void *)
	Start routine for sampling thread. More...
Private Attributes
CMD	_cmd
	current command.
Lock	_lock
	critical section.
int	_terminated
	thread termination flag.

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Detailed Description

CPU Sampling.

This class implements sampling method for CPU profiling. The sampling is done by a separate thread that is created during profiler start-up.

Author:

Petr Luner, Marek Przeczek

Definition at line 48 of file sampling.h.

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Constructor & Destructor Documentation

Sampling::Sampling (  JVMPI_Interface *    jvmpi )

Constructor. It initializes locks needed while sampling. Parameters: jvmpi  pointer to JVMPI interface Definition at line 43 of file sampling.cpp.

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Member Function Documentation

int Sampling::isTerminated (    )

Returns true/false in dependance on sampling thread has been terminated or not yet. Returns: 1 (thread stopped); 0 (still runnning) Definition at line 379 of file sampling.cpp. Referenced by Prof::event_jvmShutDown().

void Sampling::samplingMain (  void *    )  [static, private]

Start routine for sampling thread. Parameters: not  used Definition at line 374 of file sampling.cpp.

int Sampling::startThread (  int    turnedOn )

Starts sampling thread. This method is expected to be called only once during profiler start-up. Parameters: turnedOn  whether sampling is turned on or off Returns: 0 (ok) -1 (error) Definition at line 163 of file sampling.cpp.

void Sampling::terminateThread (    )

Terminates sampling thread. The operation is asynchronous to prevent deadlocks. Definition at line 194 of file sampling.cpp. Referenced by Prof::event_jvmShutDown().

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

• sampling.h
• sampling.cpp

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