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|
// ============================================================================
//
// = PACKAGE
// tests.ASX
//
// = FILENAME
// ThreadPoolTest.java
//
// = AUTHOR
// Prashant Jain
//
// ============================================================================
package tests.ASX;
import java.io.*;
import ACE.OS.*;
import ACE.ASX.*;
import ACE.Reactor.*;
public class ThreadPoolTest extends Task
{
int nThreads_;
int nIterations_;
public static int MAX_MB_SIZE = 1024;
public ThreadPoolTest (int nThreads, int nIterations)
{
this.nIterations_ = nIterations;
this.nThreads_ = nThreads;
if (this.activate (0, nThreads, true) == -1)
ACE.ERROR ("activate failed");
}
public int handleTimeout (TimeValue tv, Object obj)
{
return 0;
}
public int open (Object obj)
{
return 0;
}
public int close (long flags)
{
return 0;
}
public int put (MessageBlock mb, TimeValue tv)
{
try
{
return this.putq (mb, tv);
}
catch (InterruptedException e)
{
}
return 0;
}
public int svc ()
{
int result = 0;
int count = 1;
// Keep looping, reading a message out of the queue, until we get a
// message with a length == 0, which signals us to quit.
try
{
for (;; count++)
{
MessageBlock mb = this.getq (new TimeValue ());
if (mb == null)
{
ACE.ERROR (Thread.currentThread ().toString () + " in iteration " + count + ", got result -1, exiting");
break;
}
int length = mb.length ();
if (length > 0)
ACE.DEBUG (Thread.currentThread ().toString () +
" in iteration " + count + ", length = " +
length + ", text = \"" + mb.base () + "\"");
if (length == 0)
{
ACE.DEBUG (Thread.currentThread ().toString () +
" in iteration " + count +
", got NULL message, exiting");
break;
}
Thread.yield ();
}
}
catch (InterruptedException e)
{
}
return 0;
}
public static void produce (ThreadPoolTest threadPool, int nIterations)
{
int count = 0;
for (int n = 0;;)
{
// Allocate a new message.
MessageBlock mb = new MessageBlock (new Integer (count).toString ());
if (count == nIterations)
n = 1; // Indicate that we need to shut down.
else
count++;
if (count == 0 || (count % 20 == 0))
{
try
{
Thread.sleep (1);
}
catch (InterruptedException e)
{
}
}
if (n != 1)
{
ACE.DEBUG ("Producing...");
// Pass the message to the Thread_Pool.
if (threadPool.put (mb, new TimeValue ()) == -1)
ACE.ERROR ("put");
}
else
{
// Send a shutdown message to the waiting threads and exit.
ACE.DEBUG ("start loop, dump of task");
for (int i = threadPool.thrCount (); i > 0; i--)
{
ACE.DEBUG (Thread.currentThread ().toString () +
"EOF, enqueueing NULL block for thread " + i);
// Enqueue a NULL message to flag each consumer to
// shutdown.
if (threadPool.put (new MessageBlock (0), new TimeValue ()) == -1)
ACE.ERROR ("put");
}
break;
}
}
}
public static void main (String args[])
{
int nThreads = 1;
int nIterations = 100;
try
{
if (args.length == 2)
{
nThreads = Integer.parseInt (args[0]);
nIterations = Integer.parseInt (args[1]);
}
else if (args.length == 1)
{
nThreads = Integer.parseInt (args[0]);
}
}
catch (NumberFormatException e)
{
ACE.ERROR ("Illegal argument.");
}
ACE.DEBUG ("Threads = " + nThreads + " Iterations = " + nIterations);
// Create the worker tasks.
ThreadPoolTest threadPool = new ThreadPoolTest (nThreads,
nIterations);
// Create work for the worker tasks to process in their own threads.
produce (threadPool, nIterations);
ACE.DEBUG ("exiting...");
}
}
|
