Attachment 49216 Details for Bug 155878 – More accurate version of org.eclipse.core.runtime.Platform.getOSArch for the CDT

More accurate version of org.eclipse.core.runtime.Platform.getOSArch for the CDT

Platform.java (text/plain), 2.69 KB, created by Corey Ashford

on 2006-08-31 16:53:52 EDT

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Creator: Corey Ashford

Created: 2006-08-31 16:53:52 EDT

Size: 2.69 KB

patch

obsolete

>/*******************************************************************************
> * Copyright (c) 2006 IBM Corporation 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:
> *     IBM Corporation - Corey Ashford
> *     
> *******************************************************************************/
>
>package org.eclipse.cdt.utils;
>
>import java.io.BufferedReader;
>import java.io.IOException;
>import java.io.InputStreamReader;
>import org.osgi.framework.Bundle;
>
>public final class Platform {
>
>	// This class duplicates all of the methods in org.eclipse.core.runtime.Platform
>	// that are used by the CDT.  getOSArch() needs a few tweaks because the value returned
>	// by org.eclipse.core.runtime.Platform.getOSArch represents what the JVM thinks the
>	// architecture is.  In some cases, we may actually be running on a 64-bit machine,
>	// but the JVM thinks it's running on a 32-bit machine.  Without this change, the CDT
>	// will not handle 64-bit executables on some ppc64.  This method could easily be
>	// extended to handle other platforms with similar issues.
>	//
>	// Unfortunately, the org.eclipse.core.runtime.Platform is final, so we cannot just
>	// extend it and and then override the getOSArch method, so getBundle and getOS just
>	// encapsulate calls to the same methods in org.eclipse.core.runtime.Platform.
>	
>	public static final String OS_LINUX = org.eclipse.core.runtime.Platform.OS_LINUX;
>	
>	private static boolean ppcArchIsCached = false;
>	private static String cachedPpcArch = null;
>	
>	public static Bundle getBundle(String symbolicName) {
>		return org.eclipse.core.runtime.Platform.getBundle(symbolicName);
>	}
>	
>	public static String getOS() {
>		return org.eclipse.core.runtime.Platform.getOS();
>	}
>	
>	public static String getOSArch() {
>		String arch = org.eclipse.core.runtime.Platform.getOSArch();
>		if (arch.equals(org.eclipse.core.runtime.Platform.ARCH_PPC)) {
>			// Determine if the platform is actually a ppc64 machine
>			if (!ppcArchIsCached) {
>				Process unameProcess;
>				String cmd[] = {"uname", "-p"};
>
>				ppcArchIsCached = true;
>				try {
>					unameProcess = Runtime.getRuntime().exec(cmd);
>
>					InputStreamReader inputStreamReader = new InputStreamReader(unameProcess.getInputStream());
>					BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
>					cachedPpcArch = bufferedReader.readLine();
>
>				} catch (IOException e) {
>					cachedPpcArch = null;
>				}
>			}
>			if (cachedPpcArch != null) {
>				return cachedPpcArch;
>			} else {
>				return arch;
>			}
>		}
>		return arch;
>	}
>}

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Attachments on bug 155878: 49216