javaprofiler-commits

[Marek P. <ma...@us...>]

Update of /cvsroot/javaprofiler/library/demo/04
In directory usw-pr-cvs1:/tmp/cvs-serv24727/demo/04

Added Files:
	Makefile Makefile.mak Makefile.rules README Test.java dir.info 
Log Message:
demo to introduce new features of Java IProf class added,
(net.sourceforge.javaprofiler.jpiimpl.commun.IProf)

--- NEW FILE: Makefile ---
include ../../config.mk
include Makefile.rules

--- NEW FILE: Makefile.mak ---
!include ../../config.mk
!include Makefile.rules

--- NEW FILE: Makefile.rules ---
Test.o \
Test.obj:
	$(JAVAC) $(JAVACFLAGS) Test.java

--- NEW FILE: README ---
This example shows how to use iterators (getAllThruIterator() and
getChangedThruIterator() methods). It does the same as example 01 (very slow)
and 02 (fast). Read comments in the file.

--- NEW FILE: Test.java ---
/*
 *                         Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"); you may not use this file except
 * in compliance with the License. A copy of the License is available
 * at http://www.sun.com/
 *
 * The Original Code is the Java Profiler module.  The Initial Developers
 * of the Original Code are Jan Stola, Pavel Vacha, Michal Pise, Petr Luner,
 * Lukas Petru and Marek Przeczek.
 *
 * Portions created by Jan Stola are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Pavel Vacha are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Michal Pise are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Petr Luner are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Lukas Petru are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Portions created by Marek Przeczek are Copyright (C) 2000-2001.
 * All Rights Reserved.
 *
 * Contributors: Jan Stola, Pavel Vacha, Michal Pise, Petr Luner,
 *               Lukas Petru and Marek Przeczek.
 */

import java.lang.*;
import java.util.*;

import net.sourceforge.javaprofiler.jpiimpl.commun.*;

public class Test {

	// communication interface
	private IProf iprof = null;

	private int askForMethods( int objId) throws Exception {

		int numMethods = 0;

		// ask for all methods of given class
		Iterator iterator =
			iprof.getAllThruIterator( objId, IProf.CLASS_METHODS, true,
			                          true, IProf.NO_OPTIONAL_ARG);

		while( iterator.hasNext()) {

			// take the first one directly from I/O buffer 
			IProf.sID sid = (IProf.sID)iterator.next();

			// write method name
			IProf.sMethodInfo mi = (IProf.sMethodInfo)sid.info;
			System.out.println( " METHOD: " + mi.methodName);

			numMethods++;
		}

		System.out.println();
		
		return numMethods;
	}

	private void askForClasses() throws Exception {

		int numClasses = 0;
		int numMethods = 0;

		// ask for all classes
		Iterator iterator =
			iprof.getAllThruIterator( 0, IProf.CLASSES, true,
			                          true, IProf.NO_OPTIONAL_ARG);
		
		while( iterator.hasNext()) {

			// take the first one directly from I/O buffer
			// every time returned, sid references to same object
			// only data inside it are changed
			// WHY: because 'sameOutputObject' of getAllThruIterator()
			//      was set to 'true' => we don't waste our memory
			IProf.sID sid = (IProf.sID)iterator.next();

			// write class name
			IProf.sClassInfo ci = (IProf.sClassInfo)sid.info;
			System.out.println( "CLASS: " + ci.className);

			// ask for all methods of choosen class
			numMethods += askForMethods( sid.objId);

			numClasses++;
		}

		System.out.println( "NUMBER OF CLASSES: " + numClasses);

		// following two numbers should be the same
		// if not, something is bad
		LinkedList list = iprof.getAll( 0, IProf.METHODS);
		System.out.println( "NUMBER OF METHODS (1): " + numMethods);
		System.out.println( "NUMBER OF METHODS (2): " + list.size());
	}

	public void runTest() {

		// initialize and start communication
		// sockets are used by default
		iprof = new IProf();
		iprof.run();

		try {

			// til profiled program is going, do nothing
			while( !iprof.isShutdowned()) {
			
				System.out.println( "waiting...");
				Thread.sleep( 1000);
			}

			// profiled program has finished, so ask for all classes
			askForClasses();

			// now, i don't want anything else,
			// so I shutdown profiled JVM definitely
			iprof.shutdown();
		}
		catch( Exception e) {

			System.err.println( "an error occurred, exception:");
			System.err.println( e.getClass().getName());
		}

		// communication must be stopped even if an error occurred !
		iprof.stop();
		iprof = null;
	}

	public static void main( String[] arg) {

		// let's run the test
		(new Test()).runTest();
	}
};

--- NEW FILE: dir.info ---
FILES = Test
CLEAN_FILES = *.class