Attachment #226789 for bug #343977

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/*******************************************************************************
 * Copyright (c) 2000, 2013 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

		IPath location = workspace.getMetaArea().getSafeTableLocationFor(ResourcesPlugin.PI_RESOURCES);
		IPath backup = workspace.getMetaArea().getBackupLocationFor(location);
		try {
			saveMasterTable(ISaveContext.FULL_SAVE, backup);
		} catch (CoreException e) {
			Policy.log(e.getStatus());
			backup.toFile().delete();

		if (location.toFile().exists() && !location.toFile().delete())
			return;
		try {
			saveMasterTable(ISaveContext.FULL_SAVE, location);
		} catch (CoreException e) {
			Policy.log(e.getStatus());
			location.toFile().delete();

					if (kind == ISaveContext.FULL_SAVE)
						removeClearDeltaMarks();
					//this must be done after committing save contexts to update participant save numbers
					saveMasterTable(kind);
					broadcastLifecycle(DONE_SAVING, contexts, warnings, Policy.subMonitorFor(monitor, 1));
					hookEndSave(kind, project, start);
					return warnings;

		}
	}

	protected void saveMasterTable(int kind) throws CoreException {
		saveMasterTable(kind, workspace.getMetaArea().getSafeTableLocationFor(ResourcesPlugin.PI_RESOURCES));
	}

	protected void saveMasterTable(int kind, IPath location) throws CoreException {
		long start = System.currentTimeMillis();
		java.io.File target = location.toFile();
		try {
			if (kind == ISaveContext.FULL_SAVE || kind == ISaveContext.SNAPSHOT)
				validateMasterTableBeforeSave(target);
			SafeChunkyOutputStream output = new SafeChunkyOutputStream(target);
			try {
				masterTable.store(output, "master table"); //$NON-NLS-1$

			masterTable.setProperty(key, Long.toString(System.currentTimeMillis()));
	}

	private void validateMasterTableBeforeSave(java.io.File target) throws IOException {
		if (target.exists()) {
			MasterTable previousMasterTable = new MasterTable();
			SafeChunkyInputStream input = new SafeChunkyInputStream(target);
			try {
				previousMasterTable.load(input);
				String stringValue = previousMasterTable.getProperty(ROOT_SEQUENCE_NUMBER_KEY);
				// if there was a full save, then there must be a non-null entry for root
				if (stringValue != null) {
					int valueInFile = new Integer(stringValue).intValue();
					int valueInMemory = new Integer(masterTable.getProperty(ROOT_SEQUENCE_NUMBER_KEY)).intValue();
					// new master table must provide greater or equal sequence number for root
					// throw exception if new value is lower than previous one - we cannot allow to desynchronize master table on disk
					String message = "Cannot set lower sequence number for root (previous: " + valueInFile + ", new: " + valueInMemory + "). Location: " + target.getAbsolutePath(); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
					Assert.isLegal(valueInMemory >= valueInFile, message);
				}
			} finally {
				input.close();
			}
		}
	}

	/**
	 * Visit the given resource (to depth infinite) and write out extra information
	 * like markers and sync info. To be called during a full save and project save.

Return to bug 343977

Lines 1-5 Link Here

(-)a/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/SaveManager.java (-7 / +31 lines)
1	/*******************************************************************************	1	/*******************************************************************************
2	* Copyright (c) 2000, 2012 IBM Corporation and others.	2	* Copyright (c) 2000, 2013 IBM Corporation and others.
3	* All rights reserved. This program and the accompanying materials	3	* All rights reserved. This program and the accompanying materials
4	* are made available under the terms of the Eclipse Public License v1.0	4	* are made available under the terms of the Eclipse Public License v1.0
5	* which accompanies this distribution, and is available at	5	* which accompanies this distribution, and is available at
Lines 225-231 Link Here
225	IPath location = workspace.getMetaArea().getSafeTableLocationFor(ResourcesPlugin.PI_RESOURCES);	225	IPath location = workspace.getMetaArea().getSafeTableLocationFor(ResourcesPlugin.PI_RESOURCES);
226	IPath backup = workspace.getMetaArea().getBackupLocationFor(location);	226	IPath backup = workspace.getMetaArea().getBackupLocationFor(location);
227	try {	227	try {
228	saveMasterTable(backup);	228	saveMasterTable(ISaveContext.FULL_SAVE, backup);
229	} catch (CoreException e) {	229	} catch (CoreException e) {
230	Policy.log(e.getStatus());	230	Policy.log(e.getStatus());
231	backup.toFile().delete();	231	backup.toFile().delete();
Lines 234-240 Link Here
234	if (location.toFile().exists() && !location.toFile().delete())	234	if (location.toFile().exists() && !location.toFile().delete())
235	return;	235	return;
236	try {	236	try {
237	saveMasterTable(location);	237	saveMasterTable(ISaveContext.FULL_SAVE, location);
238	} catch (CoreException e) {	238	} catch (CoreException e) {
239	Policy.log(e.getStatus());	239	Policy.log(e.getStatus());
240	location.toFile().delete();	240	location.toFile().delete();
Lines 1194-1200 Link Here
1194	if (kind == ISaveContext.FULL_SAVE)	1194	if (kind == ISaveContext.FULL_SAVE)
1195	removeClearDeltaMarks();	1195	removeClearDeltaMarks();
1196	//this must be done after committing save contexts to update participant save numbers	1196	//this must be done after committing save contexts to update participant save numbers
1197	saveMasterTable();	1197	saveMasterTable(kind);
1198	broadcastLifecycle(DONE_SAVING, contexts, warnings, Policy.subMonitorFor(monitor, 1));	1198	broadcastLifecycle(DONE_SAVING, contexts, warnings, Policy.subMonitorFor(monitor, 1));
1199	hookEndSave(kind, project, start);	1199	hookEndSave(kind, project, start);
1200	return warnings;	1200	return warnings;
Lines 1216-1229 Link Here
1216	}	1216	}
1217	}	1217	}
1218		1218
1219	protected void saveMasterTable() throws CoreException {	1219	protected void saveMasterTable(int kind) throws CoreException {
1220	saveMasterTable(workspace.getMetaArea().getSafeTableLocationFor(ResourcesPlugin.PI_RESOURCES));	1220	saveMasterTable(kind, workspace.getMetaArea().getSafeTableLocationFor(ResourcesPlugin.PI_RESOURCES));
1221	}	1221	}
1222		1222
1223	protected void saveMasterTable(IPath location) throws CoreException {	1223	protected void saveMasterTable(int kind, IPath location) throws CoreException {
1224	long start = System.currentTimeMillis();	1224	long start = System.currentTimeMillis();
1225	java.io.File target = location.toFile();	1225	java.io.File target = location.toFile();
1226	try {	1226	try {
		1227	if (kind == ISaveContext.FULL_SAVE \|\| kind == ISaveContext.SNAPSHOT)
		1228	validateMasterTableBeforeSave(target);
1227	SafeChunkyOutputStream output = new SafeChunkyOutputStream(target);	1229	SafeChunkyOutputStream output = new SafeChunkyOutputStream(target);
1228	try {	1230	try {
1229	masterTable.store(output, "master table"); //$NON-NLS-1$	1231	masterTable.store(output, "master table"); //$NON-NLS-1$
Lines 1545-1550 Link Here
1545	masterTable.setProperty(key, Long.toString(System.currentTimeMillis()));	1547	masterTable.setProperty(key, Long.toString(System.currentTimeMillis()));
1546	}	1548	}
1547		1549
		1550	private void validateMasterTableBeforeSave(java.io.File target) throws IOException {
		1551	if (target.exists()) {
		1552	MasterTable previousMasterTable = new MasterTable();
		1553	SafeChunkyInputStream input = new SafeChunkyInputStream(target);
		1554	try {
		1555	previousMasterTable.load(input);
		1556	String stringValue = previousMasterTable.getProperty(ROOT_SEQUENCE_NUMBER_KEY);
		1557	// if there was a full save, then there must be a non-null entry for root
		1558	if (stringValue != null) {
		1559	int valueInFile = new Integer(stringValue).intValue();
		1560	int valueInMemory = new Integer(masterTable.getProperty(ROOT_SEQUENCE_NUMBER_KEY)).intValue();
		1561	// new master table must provide greater or equal sequence number for root
		1562	// throw exception if new value is lower than previous one - we cannot allow to desynchronize master table on disk
		1563	String message = "Cannot set lower sequence number for root (previous: " + valueInFile + ", new: " + valueInMemory + "). Location: " + target.getAbsolutePath(); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
		1564	Assert.isLegal(valueInMemory >= valueInFile, message);
		1565	}
		1566	} finally {
		1567	input.close();
		1568	}
		1569	}
		1570	}
		1571
1548	/**	1572	/**
1549	* Visit the given resource (to depth infinite) and write out extra information	1573	* Visit the given resource (to depth infinite) and write out extra information
1550	* like markers and sync info. To be called during a full save and project save.	1574	* like markers and sync info. To be called during a full save and project save.