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Diffstat (limited to 'dsf/org.eclipse.cdt.examples.dsf/src/org/eclipse/cdt/examples/dsf/timers/ServicesShutdownSequence.java')
-rw-r--r-- | dsf/org.eclipse.cdt.examples.dsf/src/org/eclipse/cdt/examples/dsf/timers/ServicesShutdownSequence.java | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/dsf/org.eclipse.cdt.examples.dsf/src/org/eclipse/cdt/examples/dsf/timers/ServicesShutdownSequence.java b/dsf/org.eclipse.cdt.examples.dsf/src/org/eclipse/cdt/examples/dsf/timers/ServicesShutdownSequence.java new file mode 100644 index 00000000000..cb8276c9a13 --- /dev/null +++ b/dsf/org.eclipse.cdt.examples.dsf/src/org/eclipse/cdt/examples/dsf/timers/ServicesShutdownSequence.java @@ -0,0 +1,100 @@ +/******************************************************************************* + * Copyright (c) 2006, 2008 Wind River Systems and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Wind River Systems - initial API and implementation + *******************************************************************************/ +package org.eclipse.cdt.examples.dsf.timers; + +import org.eclipse.cdt.dsf.concurrent.IDsfStatusConstants; +import org.eclipse.cdt.dsf.concurrent.RequestMonitor; +import org.eclipse.cdt.dsf.concurrent.Sequence; +import org.eclipse.cdt.dsf.service.DsfServicesTracker; +import org.eclipse.cdt.dsf.service.DsfSession; +import org.eclipse.cdt.dsf.service.IDsfService; +import org.eclipse.cdt.examples.dsf.DsfExamplesPlugin; +import org.eclipse.core.runtime.IStatus; +import org.eclipse.core.runtime.Status; + +/** + * Sequence that stops the services in the timers session. + */ +public class ServicesShutdownSequence extends Sequence { + + // Session to that the services are running in. + final private DsfSession fSession; + + // DSF Services is created as the first step of the sequence. It + // cannot be created by the constructor because it can only be called + // in the session thread. + DsfServicesTracker fTracker; + + public ServicesShutdownSequence(DsfSession session) { + super(session.getExecutor()); + fSession = session; + } + + Step[] fSteps = new Step[] { + new Step() { + @Override + public void execute(RequestMonitor requestMonitor) { + fTracker = new DsfServicesTracker(DsfExamplesPlugin.getBundleContext(), fSession.getId()); + requestMonitor.done(); + } + + @Override + public void rollBack(RequestMonitor requestMonitor) { + // Dispose the tracker in case shutdown sequence is aborted + // and is rolled back. + fTracker.dispose(); + fTracker = null; + requestMonitor.done(); + } + }, + new Step() { + @Override + public void execute(RequestMonitor requestMonitor) { + shutdownService(AlarmService.class, requestMonitor); + } + }, + new Step() { + @Override + public void execute(RequestMonitor requestMonitor) { + shutdownService(TimerService.class, requestMonitor); + } + }, + new Step() { + @Override + public void execute(RequestMonitor requestMonitor) { + // Dispose the tracker after the services are shut down. + fTracker.dispose(); + fTracker = null; + requestMonitor.done(); + } + } + }; + + @Override + public Step[] getSteps() { return fSteps; } + + // A convenience method that shuts down given service. Only service class + // is used to identify the service. + private <V extends IDsfService> void shutdownService(Class<V> clazz, RequestMonitor requestMonitor) { + IDsfService service = fTracker.getService(clazz); + if (service != null) { + service.shutdown(requestMonitor); + } + else { + requestMonitor.setStatus(new Status( + IStatus.ERROR, DsfExamplesPlugin.PLUGIN_ID, + IDsfStatusConstants.INTERNAL_ERROR, + "Service '" + clazz.getName() + "' not found.", null)); + requestMonitor.done(); + } + } + +} |