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Viewing changes to systemtap/org.eclipse.linuxtools.callgraph/src/org/eclipse/linuxtools/internal/callgraph/graphlisteners/Projectionist.java

  • Committer: Package Import Robot
  • Author(s): Jakub Adam
  • Date: 2012-06-29 12:07:30 UTC
  • Revision ID: package-import@ubuntu.com-20120629120730-bfri1xys1i71dpn6
Tags: upstream-1.0.0
Import upstream version 1.0.0

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systemtap/org.eclipse.linuxtools.callgraph/src/org/eclipse/linuxtools/internal/callgraph/graphlisteners/Projectionist.java
 
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/*******************************************************************************
 
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 * Copyright (c) 2009 Red Hat, Inc.
 
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 * All rights reserved. This program and the accompanying materials
 
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 * are made available under the terms of the Eclipse Public License v1.0
 
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 * which accompanies this distribution, and is available at
 
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 * http://www.eclipse.org/legal/epl-v10.html
 
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 * 
 
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 * Contributors:
 
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 *     Red Hat - initial API and implementation
 
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 *******************************************************************************/
 
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package org.eclipse.linuxtools.internal.callgraph.graphlisteners;
 
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import org.eclipse.core.runtime.IProgressMonitor;
 
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import org.eclipse.core.runtime.IStatus;
 
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import org.eclipse.core.runtime.Status;
 
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import org.eclipse.core.runtime.jobs.Job;
 
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import org.eclipse.linuxtools.internal.callgraph.StapGraph;
 
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import org.eclipse.swt.widgets.Display;
 
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/**
 
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 * A Projectionist is the gguy that operates a movie camera.
 
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 * @author chwang
 
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 *
 
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 */
 
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public class Projectionist extends Job {
 
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        private StapGraph graph;
 
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        private int frame_time = 2000;
 
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        private boolean pause;
 
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        private boolean busy;
 
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        /**
 
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         * @param name
 
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         * @param listener    -- the keyListener instantiating this class
 
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         * @param time -- Amount of time between frames
 
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         */
 
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        public Projectionist(String name, StapGraph graph, int time) {
 
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                super(name);
 
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                this.graph = graph;
 
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                this.frame_time = time;
 
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                pause = false;
 
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                busy = false;
 
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        }
 
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        @Override
 
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        public IStatus run(IProgressMonitor monitor) {
 
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                long snapshot = System.currentTimeMillis();
 
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                while (true) {
 
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                        if (busy) {
 
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                                try {
 
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                                        Thread.sleep(300);
 
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                                } catch (InterruptedException e1) {
 
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                                        e1.printStackTrace();
 
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                                }
 
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                                continue;
 
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                        }
 
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                        if (pause)
 
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                                return Status.OK_STATUS;
 
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                        if (System.currentTimeMillis() - snapshot >= frame_time) {
 
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                                snapshot = System.currentTimeMillis();
 
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                                busy = true;
 
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                                Display.getDefault().asyncExec(new Runnable() {
 
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                                        @Override
 
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                                        public void run() {
 
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                                                graph.drawNextNode();
 
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                                                busy = false;
 
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                                        }
 
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                                });
 
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                        } else {
 
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                                try {
 
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                                        Thread.sleep(500);
 
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                                } catch (InterruptedException e) {
 
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                                        e.printStackTrace();
 
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                                }
 
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                        }
 
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                        if (monitor.isCanceled()) {
 
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                                break;
 
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                        }
 
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                }
 
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                return Status.CANCEL_STATUS;
 
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        }
 
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        /**
 
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         * Projectionist will pause -- reschedule job to continue
 
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         */
 
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        public void pause() {
 
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                pause = true;
 
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        }
 
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}