com.purpletech.util
Class BasicThreadWatcher

java.lang.Object
  |
  +--com.purpletech.util.BasicThreadWatcher

All Implemented Interfaces:

java.lang.Runnable, Task, ThreadWatcher

public class BasicThreadWatcher

extends java.lang.Object

implements Task, ThreadWatcher

Watches threads.

Field Summary

static java.lang.String	clear
boolean	isVerbose

Fields inherited from interface com.purpletech.util.ThreadWatcher

IDLE, RUNNING, states, STOPPED

Constructor Summary

BasicThreadWatcher()

BasicThreadWatcher(int priority, int pause, int threshold, java.io.PrintStream out, boolean v)

Method Summary

boolean	check()
int[]	count()
static ThreadWatcher	getDefault()
void	print(java.io.PrintStream out)
void	run()
void	set(java.lang.String note) register that the current thread is now running, and doing something interesting, represented by the note param.
void	set(java.lang.Thread t, int state, java.lang.String note)
static void	setDefault(ThreadWatcher tw)
void	setIdle() register that the current thread is now idle (which means it's OK if it's blocked, waiting on IO for example)
void	setWatcher(ThreadWatcher w) Even a watcher needs a watcher
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

clear

public static java.lang.String clear

isVerbose

public boolean isVerbose

Constructor Detail

BasicThreadWatcher

public BasicThreadWatcher(int priority,
                          int pause,
                          int threshold,
                          java.io.PrintStream out,
                          boolean v)

BasicThreadWatcher

public BasicThreadWatcher()

Method Detail

setDefault

public static void setDefault(ThreadWatcher tw)

getDefault

public static ThreadWatcher getDefault()

set

public void set(java.lang.Thread t,
                int state,
                java.lang.String note)

Specified by:

set in interface ThreadWatcher

Parameters:

t - the thread we are watching

state - the state constant

note - what the thread is doing

setIdle

public void setIdle()

Description copied from interface: ThreadWatcher

register that the current thread is now idle (which means it's OK if it's blocked, waiting on IO for example)

Specified by:

setIdle in interface ThreadWatcher

set

public void set(java.lang.String note)

Description copied from interface: ThreadWatcher

register that the current thread is now running, and doing something interesting, represented by the note param. It would be bad if it blocked now.

Specified by:

set in interface ThreadWatcher

print

public void print(java.io.PrintStream out)

start

public void start()

stop

public void stop()

Specified by:

stop in interface Task

run

public void run()

Specified by:

run in interface java.lang.Runnable

setWatcher

public void setWatcher(ThreadWatcher w)

Even a watcher needs a watcher

Specified by:

setWatcher in interface Task

check

public boolean check()

Returns:

true if everything's OK

count

public int[] count()

Returns:

array[state] of the number of threads in each state