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use platform locking for project store

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Andrew Gvozdev 2011-09-19 14:39:09 -04:00
parent 8ba7dba9e9
commit 6a200bcbce
1 changed files with 59 additions and 49 deletions
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104
core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/language/settings/providers/LanguageSettingsProvidersSerializer.java
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@ -36,13 +36,14 @@ import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.ILock;
import org.eclipse.core.runtime.jobs.Job;
import org.w3c.dom.Document; import org.w3c.dom.Document;
import org.w3c.dom.Element; import org.w3c.dom.Element;
import org.w3c.dom.Node; import org.w3c.dom.Node;
import org.w3c.dom.NodeList; import org.w3c.dom.NodeList;
public class LanguageSettingsProvidersSerializer { public class LanguageSettingsProvidersSerializer {
private static final String STORAGE_WORKSPACE_LANGUAGE_SETTINGS = "language.settings.xml"; //$NON-NLS-1$ private static final String STORAGE_WORKSPACE_LANGUAGE_SETTINGS = "language.settings.xml"; //$NON-NLS-1$
private static final String SETTINGS_FOLDER_NAME = ".settings/"; //$NON-NLS-1$ private static final String SETTINGS_FOLDER_NAME = ".settings/"; //$NON-NLS-1$
private static final String STORAGE_PROJECT_LANGUAGE_SETTINGS = "language.settings.xml"; //$NON-NLS-1$ private static final String STORAGE_PROJECT_LANGUAGE_SETTINGS = "language.settings.xml"; //$NON-NLS-1$
@ -54,9 +55,9 @@ public class LanguageSettingsProvidersSerializer {
private static final String ELEM_CONFIGURATION = "configuration"; //$NON-NLS-1$ private static final String ELEM_CONFIGURATION = "configuration"; //$NON-NLS-1$
private static final String ELEM_PROVIDER = "provider"; //$NON-NLS-1$ private static final String ELEM_PROVIDER = "provider"; //$NON-NLS-1$
private static final String ELEM_PROVIDER_REFERENCE = "provider-reference"; //$NON-NLS-1$ private static final String ELEM_PROVIDER_REFERENCE = "provider-reference"; //$NON-NLS-1$
private static ILock serializingLock = Job.getJobManager().newLock();
/** Cache of globally available providers to be consumed by calling clients */ /** Cache of globally available providers to be consumed by calling clients */
private static Map<String, ILanguageSettingsProvider> rawGlobalWorkspaceProviders = new HashMap<String, ILanguageSettingsProvider>(); private static Map<String, ILanguageSettingsProvider> rawGlobalWorkspaceProviders = new HashMap<String, ILanguageSettingsProvider>();
private static Object serializingLock = new Object();
private static class LanguageSettingsWorkspaceProvider implements ILanguageSettingsProvider { private static class LanguageSettingsWorkspaceProvider implements ILanguageSettingsProvider {
private String providerId; private String providerId;
@ -186,7 +187,7 @@ public class LanguageSettingsProvidersSerializer {
} }
public static void serializeLanguageSettingsWorkspace() throws CoreException { public static void serializeLanguageSettingsWorkspace() throws CoreException {
URI uriLocation = getStoreInWorkspaceArea(STORAGE_WORKSPACE_LANGUAGE_SETTINGS); URI uriStoreWsp = getStoreInWorkspaceArea(STORAGE_WORKSPACE_LANGUAGE_SETTINGS);
List<LanguageSettingsSerializable> serializableExtensionProviders = new ArrayList<LanguageSettingsSerializable>(); List<LanguageSettingsSerializable> serializableExtensionProviders = new ArrayList<LanguageSettingsSerializable>();
for (ILanguageSettingsProvider provider : rawGlobalWorkspaceProviders.values()) { for (ILanguageSettingsProvider provider : rawGlobalWorkspaceProviders.values()) {
if (provider instanceof LanguageSettingsSerializable) { if (provider instanceof LanguageSettingsSerializable) {
@ -199,23 +200,28 @@ public class LanguageSettingsProvidersSerializer {
} }
try { try {
if (serializableExtensionProviders.isEmpty()) { if (serializableExtensionProviders.isEmpty()) {
java.io.File file = new java.io.File(uriLocation); java.io.File fileStoreWsp = new java.io.File(uriStoreWsp);
synchronized (serializingLock) { serializingLock.acquire();
file.delete(); try {
fileStoreWsp.delete();
} finally {
serializingLock.release();
} }
return; } else {
} Document doc = XmlUtil.newDocument();
Element rootElement = XmlUtil.appendElement(doc, ELEM_PLUGIN);
Element elementExtension = XmlUtil.appendElement(rootElement, ELEM_EXTENSION, new String[] {ATTR_POINT, LanguageSettingsExtensionManager.PROVIDER_EXTENSION_FULL_ID});
Document doc = XmlUtil.newDocument(); for (LanguageSettingsSerializable provider : serializableExtensionProviders) {
Element rootElement = XmlUtil.appendElement(doc, ELEM_PLUGIN); provider.serialize(elementExtension);
Element elementExtension = XmlUtil.appendElement(rootElement, ELEM_EXTENSION, new String[] {ATTR_POINT, LanguageSettingsExtensionManager.PROVIDER_EXTENSION_FULL_ID}); }
for (LanguageSettingsSerializable provider : serializableExtensionProviders) { serializingLock.acquire();
provider.serialize(elementExtension); try {
} XmlUtil.serializeXml(doc, uriStoreWsp);
} finally {
synchronized (serializingLock) { serializingLock.release();
XmlUtil.serializeXml(doc, uriLocation); }
} }
} catch (Exception e) { } catch (Exception e) {
@ -228,15 +234,16 @@ public class LanguageSettingsProvidersSerializer {
public static void loadLanguageSettingsWorkspace() throws CoreException { public static void loadLanguageSettingsWorkspace() throws CoreException {
List <ILanguageSettingsProvider> providers = null; List <ILanguageSettingsProvider> providers = null;
URI uriLocation = getStoreInWorkspaceArea(STORAGE_WORKSPACE_LANGUAGE_SETTINGS); URI uriStoreWsp = getStoreInWorkspaceArea(STORAGE_WORKSPACE_LANGUAGE_SETTINGS);
Document doc = null; Document doc = null;
serializingLock.acquire();
try { try {
synchronized (serializingLock) { doc = XmlUtil.loadXml(uriStoreWsp);
doc = XmlUtil.loadXml(uriLocation);
}
} catch (Exception e) { } catch (Exception e) {
CCorePlugin.log("Can't load preferences from file "+uriLocation, e); //$NON-NLS-1$ CCorePlugin.log("Can't load preferences from file "+uriStoreWsp, e); //$NON-NLS-1$
} finally {
serializingLock.release();
} }
if (doc!=null) { if (doc!=null) {
@ -334,29 +341,31 @@ public class LanguageSettingsProvidersSerializer {
IProject project = prjDescription.getProject(); IProject project = prjDescription.getProject();
try { try {
// Document to store in project area // Document to store in project area
Document docPrjStore = XmlUtil.newDocument(); Document docStorePrj = XmlUtil.newDocument();
Element projectElementPrjStore = XmlUtil.appendElement(docPrjStore, ELEM_PROJECT); Element projectElementStorePrj = XmlUtil.appendElement(docStorePrj, ELEM_PROJECT);
// Document to store in workspace area // Document to store in workspace area
Document docWspStore = XmlUtil.newDocument(); Document docStoreWsp = XmlUtil.newDocument();
Element projectElementWspStore = XmlUtil.appendElement(docWspStore, ELEM_PROJECT); Element projectElementStoreWsp = XmlUtil.appendElement(docStoreWsp, ELEM_PROJECT);
serializeLanguageSettingsInternal(projectElementPrjStore, projectElementWspStore, prjDescription); serializeLanguageSettingsInternal(projectElementStorePrj, projectElementStoreWsp, prjDescription);
IFile filePrjStore = getStoreInProjectArea(project); IFile fileStorePrj = getStoreInProjectArea(project);
URI uriWspStore = null; // The project store should not be absent. Absent store means legacy project, not 0 providers.
boolean isWorkspaceStoreEmpty = projectElementWspStore.getChildNodes().getLength() == 0; XmlUtil.serializeXml(docStorePrj, fileStorePrj);
uriWspStore = getStoreInWorkspaceArea(project.getName()+'.'+STORAGE_WORKSPACE_LANGUAGE_SETTINGS);
synchronized (serializingLock){
// The project store should not be absent. Absent store means legacy project, not 0 providers.
XmlUtil.serializeXml(docPrjStore, filePrjStore);
URI uriStoreWsp = null;
boolean isWorkspaceStoreEmpty = projectElementStoreWsp.getChildNodes().getLength() == 0;
uriStoreWsp = getStoreInWorkspaceArea(project.getName()+'.'+STORAGE_WORKSPACE_LANGUAGE_SETTINGS);
serializingLock.acquire();
try {
// project-specific location in workspace area // project-specific location in workspace area
if (!isWorkspaceStoreEmpty) { if (!isWorkspaceStoreEmpty) {
XmlUtil.serializeXml(docWspStore, uriWspStore); XmlUtil.serializeXml(docStoreWsp, uriStoreWsp);
} else { } else {
new java.io.File(uriWspStore).delete(); new java.io.File(uriStoreWsp).delete();
} }
} finally {
serializingLock.release();
} }
} catch (Exception e) { } catch (Exception e) {
@ -493,26 +502,27 @@ public class LanguageSettingsProvidersSerializer {
public static void loadLanguageSettings(ICProjectDescription prjDescription) { public static void loadLanguageSettings(ICProjectDescription prjDescription) {
IProject project = prjDescription.getProject(); IProject project = prjDescription.getProject();
IFile file = project.getFile(SETTINGS_FOLDER_NAME+STORAGE_PROJECT_LANGUAGE_SETTINGS); IFile storePrj = project.getFile(SETTINGS_FOLDER_NAME+STORAGE_PROJECT_LANGUAGE_SETTINGS);
// AG: FIXME not sure about that one // AG: FIXME not sure about that one
// Causes java.lang.IllegalArgumentException: Attempted to beginRule: P/cdt312, does not match outer scope rule: org.eclipse.cdt.internal.ui.text.c.hover.CSourceHover$SingletonRule@6f34fb // Causes java.lang.IllegalArgumentException: Attempted to beginRule: P/cdt312, does not match outer scope rule: org.eclipse.cdt.internal.ui.text.c.hover.CSourceHover$SingletonRule@6f34fb
try { try {
file.refreshLocal(IResource.DEPTH_ZERO, null); storePrj.refreshLocal(IResource.DEPTH_ZERO, null);
} catch (CoreException e) { } catch (CoreException e) {
// ignore failure // ignore failure
} }
if (file.exists() && file.isAccessible()) { if (storePrj.exists() && storePrj.isAccessible()) {
Document doc = null; Document doc = null;
try { try {
synchronized (serializingLock) { doc = XmlUtil.loadXml(storePrj);
doc = XmlUtil.loadXml(file);
}
Element rootElementPrj = doc.getDocumentElement(); // <project/> Element rootElementPrj = doc.getDocumentElement(); // <project/>
URI uriLocation = getStoreInWorkspaceArea(project.getName()+'.'+STORAGE_WORKSPACE_LANGUAGE_SETTINGS); URI uriStoreWsp = getStoreInWorkspaceArea(project.getName()+'.'+STORAGE_WORKSPACE_LANGUAGE_SETTINGS);
Document docWsp = null; Document docWsp = null;
synchronized (serializingLock) { serializingLock.acquire();
docWsp = XmlUtil.loadXml(uriLocation); try {
docWsp = XmlUtil.loadXml(uriStoreWsp);
} finally {
serializingLock.release();
} }
Element rootElementWsp = null; // <project/> Element rootElementWsp = null; // <project/>
@ -523,7 +533,7 @@ public class LanguageSettingsProvidersSerializer {
loadLanguageSettingsInternal(rootElementPrj, rootElementWsp, prjDescription); loadLanguageSettingsInternal(rootElementPrj, rootElementWsp, prjDescription);
} catch (Exception e) { } catch (Exception e) {
CCorePlugin.log("Can't load preferences from file "+file.getLocation(), e); //$NON-NLS-1$ CCorePlugin.log("Can't load preferences from file "+storePrj.getLocation(), e); //$NON-NLS-1$
} }
if (doc!=null) { if (doc!=null) {