bundles/org.eclipse.core.runtime/src/org/eclipse/core/internal/runtime/PlatformActivator.java - platform/eclipse.platform.runtime - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.internal.runtime;

 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.*;
 import org.eclipse.core.internal.boot.PlatformURLBaseConnection;
 import org.eclipse.core.internal.boot.PlatformURLHandler;
 import org.eclipse.core.internal.registry.*;
 import org.eclipse.core.runtime.*;
 import org.eclipse.osgi.framework.log.FrameworkLog;
 import org.eclipse.osgi.service.datalocation.FileManager;
 import org.eclipse.osgi.service.environment.EnvironmentInfo;
 import org.eclipse.osgi.service.runnable.ParameterizedRunnable;
 import org.eclipse.osgi.service.systembundle.EntryLocator;
 import org.eclipse.osgi.service.urlconversion.URLConverter;
 import org.osgi.framework.*;
 import org.osgi.service.packageadmin.PackageAdmin;
 import org.osgi.service.url.URLConstants;
 import org.osgi.service.url.URLStreamHandlerService;

 /**
  * Activator for the Eclipse runtime.
  */
 public class PlatformActivator extends Plugin implements BundleActivator {
 	private static final String PROP_ECLIPSE_EXITCODE = "eclipse.exitcode"; //$NON-NLS-1$
 	private static final String PROP_ECLIPSE_APPLICATION = "eclipse.application"; //$NON-NLS-1$
 	private static final String NL_SYSTEM_BUNDLE = "org.eclipse.osgi.nl"; //$NON-NLS-1$
 	private static final String NL_PROP_EXT = ".properties"; //$NON-NLS-1$

 	private static BundleContext context;
 	private EclipseBundleListener pluginBundleListener;
 	private ServiceReference environmentServiceReference;
 	private ServiceReference urlServiceReference;
 	private ServiceReference logServiceReference;
 	private ServiceReference packageAdminReference;
 	private long registryStamp;

 	public static BundleContext getContext() {
 		return context;
 	}

 	public void start(BundleContext runtimeContext) throws Exception {
 		PlatformActivator.context = runtimeContext;
 		acquireInfoService();
 		acquireURLConverterService();
 		acquireFrameworkLogService();
 		acquirePackageAdminService();
 		registerEntryLocator();
 		startInternalPlatform();
 		startRegistry(runtimeContext);
 		installPlatformURLSupport();
 		registerApplicationService();
 		InternalPlatform.getDefault().setRuntimeInstance(this);
 		super.start(runtimeContext);
 	}

 	/**
 	 * Register the platform URL support as a service to the URLHandler service
 	 */
 	private void installPlatformURLSupport() {
 		PlatformURLPluginConnection.startup();
 		PlatformURLFragmentConnection.startup();

 		PlatformURLBaseConnection.startup(InternalPlatform.getDefault().getInstallURL());

 		Hashtable properties = new Hashtable(1);
 		properties.put(URLConstants.URL_HANDLER_PROTOCOL, new String[] {PlatformURLHandler.PROTOCOL});
 		context.registerService(URLStreamHandlerService.class.getName(), new PlatformURLHandler(), properties);
 	}

 	private void startRegistry(BundleContext runtimeContext) {
 		boolean fromCache = true;
 		ExtensionRegistry registry = null;
 		if (!"true".equals(System.getProperty(InternalPlatform.PROP_NO_REGISTRY_CACHE))) { //$NON-NLS-1$
 			// Try to read the registry from the cache first. If that fails, create a new registry
 			MultiStatus problems = new MultiStatus(Platform.PI_RUNTIME, ExtensionsParser.PARSE_PROBLEM, "Registry cache problems", null); //$NON-NLS-1$

 			long start = 0;
 			if (InternalPlatform.DEBUG)
 				start = System.currentTimeMillis();

 			boolean lazyLoading = !"true".equals(System.getProperty(InternalPlatform.PROP_NO_LAZY_CACHE_LOADING)); //$NON-NLS-1$
 			File cacheFile = null;
 			try {
 				cacheFile = InternalPlatform.getDefault().getRuntimeFileManager().lookup(".registry", true); //$NON-NLS-1$
 			} catch (IOException e) {
 				//Ignore the exception. The registry will be rebuilt from the xml files.
 			}
 			if (cacheFile != null && cacheFile.isFile()) {
 				registryStamp = computeRegistryStamp(); //$NON-NLS-1$
 				boolean flushable = !"true".equals(System.getProperty(InternalPlatform.PROP_NO_REGISTRY_FLUSHING)); //$NON-NLS-1$
 				registry = new RegistryCacheReader(cacheFile, problems, lazyLoading, flushable).loadCache(registryStamp);
 			}
 			if (InternalPlatform.DEBUG && registry != null)
 				System.out.println("Reading registry cache: " + (System.currentTimeMillis() - start)); //$NON-NLS-1$

 			if (InternalPlatform.DEBUG_REGISTRY) {
 				if (registry == null)
 					System.out.println("Reloading registry from manifest files..."); //$NON-NLS-1$
 				else
 					System.out.println("Using registry cache " + (lazyLoading ? "with" : "without") + " lazy element loading..."); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
 			}
 			// TODO log any problems that occurred in loading the cache.
 			if (!problems.isOK())
 				System.out.println(problems);
 		}
 		if (registry == null) {
 			fromCache = false;
 			registry = new ExtensionRegistry();
 		}
 		// need to set the registry in InternalPlatform before calling any code that may rely on it
 		InternalPlatform.getDefault().setExtensionRegistry(registry);

 		// register a listener to catch new bundle installations/resolutions.
 		pluginBundleListener = new EclipseBundleListener(registry);
 		runtimeContext.addBundleListener(pluginBundleListener);

 		// populate the registry with all the currently installed bundles.
 		// There is a small window here while processBundles is being
 		// called where the pluginBundleListener may receive a BundleEvent
 		// to add/remove a bundle from the registry.  This is ok since
 		// the registry is a synchronized object and will not add the
 		// same bundle twice.
 		if (!fromCache)
 			pluginBundleListener.processBundles(runtimeContext.getBundles());

 		runtimeContext.registerService(IExtensionRegistry.class.getName(), registry, new Hashtable()); //$NON-NLS-1$
 	}

 	private long computeRegistryStamp() {
 		// If the check config prop is false or not set then exit
 		if (!"true".equalsIgnoreCase(System.getProperty(InternalPlatform.PROP_CHECK_CONFIG))) //$NON-NLS-1$
 			return 0;
 		Bundle[] allBundles = context.getBundles();
 		long result = 0;
 		for (int i = 0; i < allBundles.length; i++) {
 			URL pluginManifest = allBundles[i].getEntry("plugin.xml"); //$NON-NLS-1$
 			if (pluginManifest == null)
 				pluginManifest = allBundles[i].getEntry("fragment.xml"); //$NON-NLS-1$
 			if (pluginManifest == null)
 				continue;
 			try {
 				URLConnection connection = pluginManifest.openConnection();
 				result ^= connection.getLastModified() + allBundles[i].getBundleId();
 			} catch (IOException e) {
 				return 0;
 			}
 		}
 		return result;
 	}

 	public void stop(BundleContext runtimeContext) throws IOException {
 		// Stop the registry
 		stopRegistry(runtimeContext);
 		environmentInfoServiceReleased(environmentServiceReference);
 		urlServiceReleased(urlServiceReference);
 		logServiceReleased(logServiceReference);
 		packageAdminServiceReleased(packageAdminReference);
 		// Stop the platform orderly.
 		InternalPlatform.getDefault().stop(runtimeContext);
 		InternalPlatform.getDefault().setRuntimeInstance(null);
 		InternalPlatform.getDefault().getRuntimeFileManager().close();
 	}

 	private void stopRegistry(BundleContext runtimeContext) throws IOException {
 		runtimeContext.removeBundleListener(this.pluginBundleListener);
 		ExtensionRegistry registry = (ExtensionRegistry) InternalPlatform.getDefault().getRegistry();
 		if (registry == null)
 			return;
 		try {
 			if (!registry.isDirty())
 				return;
 			FileManager manager = InternalPlatform.getDefault().getRuntimeFileManager();
 			File cacheFile = null;
 			try {
 				manager.lookup(".registry", true); //$NON-NLS-1$
 				cacheFile = File.createTempFile("registry", ".new", manager.getBase()); //$NON-NLS-1$ //$NON-NLS-2$
 			} catch (IOException e) {
 				return; //Ignore the exception since we can recompute the cache
 			}
 			new RegistryCacheWriter(cacheFile).saveCache(registry, computeRegistryStamp());
 			try {
 				manager.update(new String[] {".registry"}, new String[] {cacheFile.getName()}); //$NON-NLS-1$
 			} catch (IOException e) {
 				//Ignore the exception since we can recompute the cache
 			}
 		} finally {
 			InternalPlatform.getDefault().setExtensionRegistry(null);
 		}
 	}

 	private void acquireInfoService() throws Exception {
 		environmentServiceReference = context.getServiceReference(EnvironmentInfo.class.getName());
 		if (environmentServiceReference == null)
 			return;
 		InternalPlatform.infoService = (EnvironmentInfo) context.getService(environmentServiceReference);
 	}

 	private void acquireURLConverterService() throws Exception {
 		urlServiceReference = context.getServiceReference(URLConverter.class.getName());
 		if (urlServiceReference == null)
 			return;
 		InternalPlatform.urlConverter = (URLConverter) context.getService(urlServiceReference);
 	}

 	private void acquireFrameworkLogService() throws Exception {
 		logServiceReference = context.getServiceReference(FrameworkLog.class.getName());
 		if (logServiceReference == null)
 			return;
 		InternalPlatform.frameworkLog = (FrameworkLog) context.getService(logServiceReference);
 	}

 	private void acquirePackageAdminService() throws Exception {
 		packageAdminReference = context.getServiceReference(PackageAdmin.class.getName());
 		if (packageAdminReference == null)
 			return;
 		InternalPlatform.packageAdmin = (PackageAdmin) context.getService(packageAdminReference);
 	}

 	private void startInternalPlatform() throws IOException {
 		InternalPlatform.getDefault().start(context);
 	}

 	private void environmentInfoServiceReleased(ServiceReference reference) {
 		if (environmentServiceReference == null)
 			return;
 		if (environmentServiceReference != reference)
 			return;

 		InternalPlatform.infoService = null;
 		context.ungetService(environmentServiceReference);
 		environmentServiceReference = null;
 	}

 	private void urlServiceReleased(ServiceReference reference) {
 		if (urlServiceReference == null)
 			return;
 		if (urlServiceReference != reference)
 			return;

 		InternalPlatform.urlConverter = null;
 		context.ungetService(urlServiceReference);
 		urlServiceReference = null;
 	}

 	private void logServiceReleased(ServiceReference reference) {
 		if (logServiceReference == null)
 			return;
 		if (logServiceReference != reference)
 			return;

 		InternalPlatform.frameworkLog = null;
 		context.ungetService(logServiceReference);
 		logServiceReference = null;
 	}

 	private void packageAdminServiceReleased(ServiceReference reference) {
 		if (packageAdminReference == null)
 			return;
 		if (packageAdminReference != reference)
 			return;

 		InternalPlatform.packageAdmin = null;
 		context.ungetService(packageAdminReference);
 		packageAdminReference = null;
 	}

 	private void registerApplicationService() {
 		ParameterizedRunnable work = new ParameterizedRunnable() {
 			public Object run(Object arg) throws Exception {
 				IPlatformRunnable application = null;
 				String applicationId = System.getProperty(PROP_ECLIPSE_APPLICATION);
 				if (applicationId == null) {
 					//Derive the application from the product information
 					IProduct product = InternalPlatform.getDefault().getProduct();
 					if (product != null) {
 						applicationId = product.getApplication();
 						System.setProperty(PROP_ECLIPSE_APPLICATION, applicationId);
 					}
 				}
 				if (applicationId == null)
 					throw new RuntimeException(Policy.bind("application.noIdFound")); //$NON-NLS-1$
 				IExtensionRegistry registry = InternalPlatform.getDefault().getRegistry();
 				IExtension applicationExtension = registry.getExtension(Platform.PI_RUNTIME, Platform.PT_APPLICATIONS, applicationId);
 				if (applicationExtension == null) {
 					IExtension[] availableApps = registry.getExtensionPoint(Platform.PI_RUNTIME + '.' + Platform.PT_APPLICATIONS).getExtensions();
 					String availableAppsString = "<NONE>"; //$NON-NLS-1$
 					if (availableApps.length != 0) {
 						availableAppsString = availableApps[0].getUniqueIdentifier();
 						for (int i = 1; i < availableApps.length; i++) {
 							availableAppsString = availableAppsString + ", " + availableApps[i].getUniqueIdentifier(); //$NON-NLS-1$
 						}
 					}
 					throw new RuntimeException(Policy.bind("application.notFound", applicationId, availableAppsString)); //$NON-NLS-1$
 				}
 				IConfigurationElement[] configs = applicationExtension.getConfigurationElements();
 				if (configs.length == 0)
 					throw new RuntimeException(Policy.bind("application.invalidExtension", applicationId)); //$NON-NLS-1$
 				IConfigurationElement config = configs[0];
 				application = (IPlatformRunnable) config.createExecutableExtension("run"); //$NON-NLS-1$
 				// if the given arg is null the pass in the left over command line args.
 				if (arg == null)
 					arg = InternalPlatform.getDefault().getApplicationArgs();
 				Object result = application.run(arg);
 				int exitCode = result instanceof Integer ? ((Integer) result).intValue() : 0;
 				System.setProperty(PROP_ECLIPSE_EXITCODE, Integer.toString(exitCode));
 				if (InternalPlatform.DEBUG)
 					System.out.println(Policy.bind("application.returned", new String[] {applicationId, result == null ? "null" : result.toString()})); //$NON-NLS-1$ //$NON-NLS-2$
 				return result;
 			}
 		};
 		Hashtable properties = new Hashtable(1);
 		properties.put(PROP_ECLIPSE_APPLICATION, "default"); //$NON-NLS-1$
 		context.registerService(ParameterizedRunnable.class.getName(), work, properties);
 	}

 	private void registerEntryLocator() {
 		EntryLocator systemResources = new EntryLocator() {
 			public URL getProperties(String basename, Locale locale) {
 				basename = basename.replace('.', '/');
 				IPath propertiesPath = new Path(NL_SYSTEM_BUNDLE + '/' + basename + '_' + locale.getLanguage() + '_' + locale.getCountry() + NL_PROP_EXT);
 				URL result = Platform.find(context.getBundle(), propertiesPath);
 				if (result != null)
 					return result;
 				propertiesPath = new Path(NL_SYSTEM_BUNDLE + '/' + basename + '_' + locale.getLanguage() + NL_PROP_EXT);
 				return Platform.find(context.getBundle(), propertiesPath);
 			}
 		};
 		context.registerService(EntryLocator.class.getName(), systemResources, null);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2003, 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.core.internal.runtime;

	import java.io.File;
	import java.io.IOException;
	import java.net.URL;
	import java.net.URLConnection;
	import java.util.*;
	import org.eclipse.core.internal.boot.PlatformURLBaseConnection;
	import org.eclipse.core.internal.boot.PlatformURLHandler;
	import org.eclipse.core.internal.registry.*;
	import org.eclipse.core.runtime.*;
	import org.eclipse.osgi.framework.log.FrameworkLog;
	import org.eclipse.osgi.service.datalocation.FileManager;
	import org.eclipse.osgi.service.environment.EnvironmentInfo;
	import org.eclipse.osgi.service.runnable.ParameterizedRunnable;
	import org.eclipse.osgi.service.systembundle.EntryLocator;
	import org.eclipse.osgi.service.urlconversion.URLConverter;
	import org.osgi.framework.*;
	import org.osgi.service.packageadmin.PackageAdmin;
	import org.osgi.service.url.URLConstants;
	import org.osgi.service.url.URLStreamHandlerService;

	/**
	* Activator for the Eclipse runtime.
	*/
	public class PlatformActivator extends Plugin implements BundleActivator {
	private static final String PROP_ECLIPSE_EXITCODE = "eclipse.exitcode"; //$NON-NLS-1$
	private static final String PROP_ECLIPSE_APPLICATION = "eclipse.application"; //$NON-NLS-1$
	private static final String NL_SYSTEM_BUNDLE = "org.eclipse.osgi.nl"; //$NON-NLS-1$
	private static final String NL_PROP_EXT = ".properties"; //$NON-NLS-1$

	private static BundleContext context;
	private EclipseBundleListener pluginBundleListener;
	private ServiceReference environmentServiceReference;
	private ServiceReference urlServiceReference;
	private ServiceReference logServiceReference;
	private ServiceReference packageAdminReference;
	private long registryStamp;

	public static BundleContext getContext() {
	return context;
	}

	public void start(BundleContext runtimeContext) throws Exception {
	PlatformActivator.context = runtimeContext;
	acquireInfoService();
	acquireURLConverterService();
	acquireFrameworkLogService();
	acquirePackageAdminService();
	registerEntryLocator();
	startInternalPlatform();
	startRegistry(runtimeContext);
	installPlatformURLSupport();
	registerApplicationService();
	InternalPlatform.getDefault().setRuntimeInstance(this);
	super.start(runtimeContext);
	}

	/**
	* Register the platform URL support as a service to the URLHandler service
	*/
	private void installPlatformURLSupport() {
	PlatformURLPluginConnection.startup();
	PlatformURLFragmentConnection.startup();

	PlatformURLBaseConnection.startup(InternalPlatform.getDefault().getInstallURL());

	Hashtable properties = new Hashtable(1);
	properties.put(URLConstants.URL_HANDLER_PROTOCOL, new String[] {PlatformURLHandler.PROTOCOL});
	context.registerService(URLStreamHandlerService.class.getName(), new PlatformURLHandler(), properties);
	}

	private void startRegistry(BundleContext runtimeContext) {
	boolean fromCache = true;
	ExtensionRegistry registry = null;
	if (!"true".equals(System.getProperty(InternalPlatform.PROP_NO_REGISTRY_CACHE))) { //$NON-NLS-1$
	// Try to read the registry from the cache first. If that fails, create a new registry
	MultiStatus problems = new MultiStatus(Platform.PI_RUNTIME, ExtensionsParser.PARSE_PROBLEM, "Registry cache problems", null); //$NON-NLS-1$

	long start = 0;
	if (InternalPlatform.DEBUG)
	start = System.currentTimeMillis();

	boolean lazyLoading = !"true".equals(System.getProperty(InternalPlatform.PROP_NO_LAZY_CACHE_LOADING)); //$NON-NLS-1$
	File cacheFile = null;
	try {
	cacheFile = InternalPlatform.getDefault().getRuntimeFileManager().lookup(".registry", true); //$NON-NLS-1$
	} catch (IOException e) {
	//Ignore the exception. The registry will be rebuilt from the xml files.
	}
	if (cacheFile != null && cacheFile.isFile()) {
	registryStamp = computeRegistryStamp(); //$NON-NLS-1$
	boolean flushable = !"true".equals(System.getProperty(InternalPlatform.PROP_NO_REGISTRY_FLUSHING)); //$NON-NLS-1$
	registry = new RegistryCacheReader(cacheFile, problems, lazyLoading, flushable).loadCache(registryStamp);
	}
	if (InternalPlatform.DEBUG && registry != null)
	System.out.println("Reading registry cache: " + (System.currentTimeMillis() - start)); //$NON-NLS-1$

	if (InternalPlatform.DEBUG_REGISTRY) {
	if (registry == null)
	System.out.println("Reloading registry from manifest files..."); //$NON-NLS-1$
	else
	System.out.println("Using registry cache " + (lazyLoading ? "with" : "without") + " lazy element loading..."); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
	}
	// TODO log any problems that occurred in loading the cache.
	if (!problems.isOK())
	System.out.println(problems);
	}
	if (registry == null) {
	fromCache = false;
	registry = new ExtensionRegistry();
	}
	// need to set the registry in InternalPlatform before calling any code that may rely on it
	InternalPlatform.getDefault().setExtensionRegistry(registry);

	// register a listener to catch new bundle installations/resolutions.
	pluginBundleListener = new EclipseBundleListener(registry);
	runtimeContext.addBundleListener(pluginBundleListener);

	// populate the registry with all the currently installed bundles.
	// There is a small window here while processBundles is being
	// called where the pluginBundleListener may receive a BundleEvent
	// to add/remove a bundle from the registry. This is ok since
	// the registry is a synchronized object and will not add the
	// same bundle twice.
	if (!fromCache)
	pluginBundleListener.processBundles(runtimeContext.getBundles());

	runtimeContext.registerService(IExtensionRegistry.class.getName(), registry, new Hashtable()); //$NON-NLS-1$
	}

	private long computeRegistryStamp() {
	// If the check config prop is false or not set then exit
	if (!"true".equalsIgnoreCase(System.getProperty(InternalPlatform.PROP_CHECK_CONFIG))) //$NON-NLS-1$
	return 0;
	Bundle[] allBundles = context.getBundles();
	long result = 0;
	for (int i = 0; i < allBundles.length; i++) {
	URL pluginManifest = allBundles[i].getEntry("plugin.xml"); //$NON-NLS-1$
	if (pluginManifest == null)
	pluginManifest = allBundles[i].getEntry("fragment.xml"); //$NON-NLS-1$
	if (pluginManifest == null)
	continue;
	try {
	URLConnection connection = pluginManifest.openConnection();
	result ^= connection.getLastModified() + allBundles[i].getBundleId();
	} catch (IOException e) {
	return 0;
	}
	}
	return result;
	}

	public void stop(BundleContext runtimeContext) throws IOException {
	// Stop the registry
	stopRegistry(runtimeContext);
	environmentInfoServiceReleased(environmentServiceReference);
	urlServiceReleased(urlServiceReference);
	logServiceReleased(logServiceReference);
	packageAdminServiceReleased(packageAdminReference);
	// Stop the platform orderly.
	InternalPlatform.getDefault().stop(runtimeContext);
	InternalPlatform.getDefault().setRuntimeInstance(null);
	InternalPlatform.getDefault().getRuntimeFileManager().close();
	}

	private void stopRegistry(BundleContext runtimeContext) throws IOException {
	runtimeContext.removeBundleListener(this.pluginBundleListener);
	ExtensionRegistry registry = (ExtensionRegistry) InternalPlatform.getDefault().getRegistry();
	if (registry == null)
	return;
	try {
	if (!registry.isDirty())
	return;
	FileManager manager = InternalPlatform.getDefault().getRuntimeFileManager();
	File cacheFile = null;
	try {
	manager.lookup(".registry", true); //$NON-NLS-1$
	cacheFile = File.createTempFile("registry", ".new", manager.getBase()); //$NON-NLS-1$ //$NON-NLS-2$
	} catch (IOException e) {
	return; //Ignore the exception since we can recompute the cache
	}
	new RegistryCacheWriter(cacheFile).saveCache(registry, computeRegistryStamp());
	try {
	manager.update(new String[] {".registry"}, new String[] {cacheFile.getName()}); //$NON-NLS-1$
	} catch (IOException e) {
	//Ignore the exception since we can recompute the cache
	}
	} finally {
	InternalPlatform.getDefault().setExtensionRegistry(null);
	}
	}

	private void acquireInfoService() throws Exception {
	environmentServiceReference = context.getServiceReference(EnvironmentInfo.class.getName());
	if (environmentServiceReference == null)
	return;
	InternalPlatform.infoService = (EnvironmentInfo) context.getService(environmentServiceReference);
	}

	private void acquireURLConverterService() throws Exception {
	urlServiceReference = context.getServiceReference(URLConverter.class.getName());
	if (urlServiceReference == null)
	return;
	InternalPlatform.urlConverter = (URLConverter) context.getService(urlServiceReference);
	}

	private void acquireFrameworkLogService() throws Exception {
	logServiceReference = context.getServiceReference(FrameworkLog.class.getName());
	if (logServiceReference == null)
	return;
	InternalPlatform.frameworkLog = (FrameworkLog) context.getService(logServiceReference);
	}

	private void acquirePackageAdminService() throws Exception {
	packageAdminReference = context.getServiceReference(PackageAdmin.class.getName());
	if (packageAdminReference == null)
	return;
	InternalPlatform.packageAdmin = (PackageAdmin) context.getService(packageAdminReference);
	}

	private void startInternalPlatform() throws IOException {
	InternalPlatform.getDefault().start(context);
	}

	private void environmentInfoServiceReleased(ServiceReference reference) {
	if (environmentServiceReference == null)
	return;
	if (environmentServiceReference != reference)
	return;

	InternalPlatform.infoService = null;
	context.ungetService(environmentServiceReference);
	environmentServiceReference = null;
	}

	private void urlServiceReleased(ServiceReference reference) {
	if (urlServiceReference == null)
	return;
	if (urlServiceReference != reference)
	return;

	InternalPlatform.urlConverter = null;
	context.ungetService(urlServiceReference);
	urlServiceReference = null;
	}

	private void logServiceReleased(ServiceReference reference) {
	if (logServiceReference == null)
	return;
	if (logServiceReference != reference)
	return;

	InternalPlatform.frameworkLog = null;
	context.ungetService(logServiceReference);
	logServiceReference = null;
	}

	private void packageAdminServiceReleased(ServiceReference reference) {
	if (packageAdminReference == null)
	return;
	if (packageAdminReference != reference)
	return;

	InternalPlatform.packageAdmin = null;
	context.ungetService(packageAdminReference);
	packageAdminReference = null;
	}

	private void registerApplicationService() {
	ParameterizedRunnable work = new ParameterizedRunnable() {
	public Object run(Object arg) throws Exception {
	IPlatformRunnable application = null;
	String applicationId = System.getProperty(PROP_ECLIPSE_APPLICATION);
	if (applicationId == null) {
	//Derive the application from the product information
	IProduct product = InternalPlatform.getDefault().getProduct();
	if (product != null) {
	applicationId = product.getApplication();
	System.setProperty(PROP_ECLIPSE_APPLICATION, applicationId);
	}
	}
	if (applicationId == null)
	throw new RuntimeException(Policy.bind("application.noIdFound")); //$NON-NLS-1$
	IExtensionRegistry registry = InternalPlatform.getDefault().getRegistry();
	IExtension applicationExtension = registry.getExtension(Platform.PI_RUNTIME, Platform.PT_APPLICATIONS, applicationId);
	if (applicationExtension == null) {
	IExtension[] availableApps = registry.getExtensionPoint(Platform.PI_RUNTIME + '.' + Platform.PT_APPLICATIONS).getExtensions();
	String availableAppsString = "<NONE>"; //$NON-NLS-1$
	if (availableApps.length != 0) {
	availableAppsString = availableApps[0].getUniqueIdentifier();
	for (int i = 1; i < availableApps.length; i++) {
	availableAppsString = availableAppsString + ", " + availableApps[i].getUniqueIdentifier(); //$NON-NLS-1$
	}
	}
	throw new RuntimeException(Policy.bind("application.notFound", applicationId, availableAppsString)); //$NON-NLS-1$
	}
	IConfigurationElement[] configs = applicationExtension.getConfigurationElements();
	if (configs.length == 0)
	throw new RuntimeException(Policy.bind("application.invalidExtension", applicationId)); //$NON-NLS-1$
	IConfigurationElement config = configs[0];
	application = (IPlatformRunnable) config.createExecutableExtension("run"); //$NON-NLS-1$
	// if the given arg is null the pass in the left over command line args.
	if (arg == null)
	arg = InternalPlatform.getDefault().getApplicationArgs();
	Object result = application.run(arg);
	int exitCode = result instanceof Integer ? ((Integer) result).intValue() : 0;
	System.setProperty(PROP_ECLIPSE_EXITCODE, Integer.toString(exitCode));
	if (InternalPlatform.DEBUG)
	System.out.println(Policy.bind("application.returned", new String[] {applicationId, result == null ? "null" : result.toString()})); //$NON-NLS-1$ //$NON-NLS-2$
	return result;
	}
	};
	Hashtable properties = new Hashtable(1);
	properties.put(PROP_ECLIPSE_APPLICATION, "default"); //$NON-NLS-1$
	context.registerService(ParameterizedRunnable.class.getName(), work, properties);
	}

	private void registerEntryLocator() {
	EntryLocator systemResources = new EntryLocator() {
	public URL getProperties(String basename, Locale locale) {
	basename = basename.replace('.', '/');
	IPath propertiesPath = new Path(NL_SYSTEM_BUNDLE + '/' + basename + '_' + locale.getLanguage() + '_' + locale.getCountry() + NL_PROP_EXT);
	URL result = Platform.find(context.getBundle(), propertiesPath);
	if (result != null)
	return result;
	propertiesPath = new Path(NL_SYSTEM_BUNDLE + '/' + basename + '_' + locale.getLanguage() + NL_PROP_EXT);
	return Platform.find(context.getBundle(), propertiesPath);
	}
	};
	context.registerService(EntryLocator.class.getName(), systemResources, null);
	}
	}