T2 Class Reference

The class T2 implements Runnable class. More...

Collaboration diagram for T2:

List of all members.

Public Member Functions
	T2 (JPWorld parent, float sleepIntervalSec)
	Creates a new instance of T1.
void	startThread ()
	Starts the thread.
void	stopThread ()
	Stops the thread.
void	disableThread ()
	Disables (pauses) the thread.
void	enableThread ()
	Enables the thread after paused.
void	interruptibleSleep (long millis)
	Interruptible sleep (replacement for Thread.sleep).
void	run ()
	Prints thread's own signature and creates a pair of particles in belonging JPWorld's context every sleepItervalMillis.
Protected Attributes
JPWorld	parent
	Parent where println() messages are directed to.
Private Attributes
String	signature = "T2: Thread 2"
volatile boolean	running = false
	Indicates if thread is (or should be) running.
volatile boolean	active = false
	Indicates that thread is active and not paused.
volatile Thread	mainThread = null
	Instance of the main thread.
int	sleepIntervalMillis
	Sleep interval for thread in millis.

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Detailed Description

The class T2 implements Runnable class.

Instance of the T2 prints out its signature until it gets stopped. It also creates a charged particle pair in associated JPWorld context.

Author:

Mikica B Kocic

Definition at line 10 of file T2.java.

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Constructor & Destructor Documentation

T2.T2	(	JPWorld	parent,
		float	sleepIntervalSec
	)

Creates a new instance of T1.

Parameters:

parent	owner of the thread
sleepIntervalSec	sleep interval in seconds

Definition at line 45 of file T2.java.

References parent, and sleepIntervalMillis.

    {
        this.parent = parent;
        this.sleepIntervalMillis = (int)( sleepIntervalSec * 1000f );
    }

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Member Function Documentation

void T2.disableThread

(

)

Disables (pauses) the thread.

Definition at line 85 of file T2.java.

References active.

Referenced by T3.run().

    {
        synchronized( this )
        {
            active = false;
            this.notifyAll ();
        }
    }

void T2.enableThread

(

)

Enables the thread after paused.

Definition at line 97 of file T2.java.

References active.

Referenced by T3.run().

    {
        synchronized( this )
        {
            active = true;
            this.notifyAll ();
        }
    }

void T2.interruptibleSleep

(

long

millis )

Interruptible sleep (replacement for Thread.sleep).

Parameters:

millis

- the length of time to sleep in milliseconds.

Definition at line 111 of file T2.java.

References running.

Referenced by run().

    {
        synchronized( this )
        {
            try {
                this.wait( millis );
            }
            catch( InterruptedException ie ) {
                running = false; // signals thread to quit
            }
        }
    }

void T2.run

(

)

Prints thread's own signature and creates a pair of particles in belonging JPWorld's context every sleepItervalMillis.

Definition at line 129 of file T2.java.

References active, JPWorld.createPairOfChargedParticles(), interruptibleSleep(), mainThread, parent, JPWorld.println(), running, signature, and sleepIntervalMillis.

    {
        while( running )
        {
            while( running && active )
            {
                parent.println( signature );
                
                parent.createPairOfChargedParticles( 1, 10.0 + Math.random () * 5.0 );
               
                interruptibleSleep( sleepIntervalMillis );
            }
            
            while( running && ! active )
            {
                interruptibleSleep( sleepIntervalMillis );
            }
        }
        
        synchronized( this )
        {
            running    = false;
            active     = false;
            mainThread = null;
        }
    }

void T2.startThread

(

)

Starts the thread.

Definition at line 54 of file T2.java.

References active, mainThread, and running.

Referenced by T3.run().

    {
        synchronized( this )
        {
            if ( mainThread != null ) {
                return;  // Allow only single thread per instance
            }
            
            running = true;
            active  = true;
            mainThread = new Thread( this );
            mainThread.start ();
        }
    }

void T2.stopThread

(

)

Stops the thread.

Definition at line 72 of file T2.java.

References active, and running.

Referenced by T3.run().

    {
        synchronized( this )
        {
            running = false;
            active  = false;
            this.notifyAll ();
        }
    }

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Member Data Documentation

volatile boolean T2.active = false [private]

Indicates that thread is active and not paused.

Definition at line 22 of file T2.java.

Referenced by disableThread(), enableThread(), run(), startThread(), and stopThread().

volatile Thread T2.mainThread = null [private]

Instance of the main thread.

Definition at line 27 of file T2.java.

Referenced by run(), and startThread().

JPWorld T2.parent [protected]

Parent where println() messages are directed to.

Definition at line 37 of file T2.java.

Referenced by run(), and T2().

volatile boolean T2.running = false [private]

Indicates if thread is (or should be) running.

Definition at line 17 of file T2.java.

Referenced by interruptibleSleep(), run(), startThread(), and stopThread().

String T2.signature = "T2: Thread 2" [private]

Definition at line 12 of file T2.java.

Referenced by run().

int T2.sleepIntervalMillis [private]

Sleep interval for thread in millis.

Definition at line 32 of file T2.java.

Referenced by run(), and T2().

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

• T2.java