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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.tools.visualvm.coredump;
import com.sun.tools.visualvm.coredump.impl.CoreDumpCategory;
import com.sun.tools.visualvm.core.datasource.Storage;
import com.sun.tools.visualvm.core.datasource.descriptor.DataSourceDescriptorFactory;
import com.sun.tools.visualvm.core.datasupport.Utils;
import com.sun.tools.visualvm.core.snapshot.RegisteredSnapshotCategories;
import com.sun.tools.visualvm.core.snapshot.SnapshotCategory;
import com.sun.tools.visualvm.core.ui.DataSourceViewsManager;
import com.sun.tools.visualvm.core.ui.PluggableDataSourceViewProvider;
import com.sun.tools.visualvm.coredump.impl.CoreDumpDescriptorProvider;
import com.sun.tools.visualvm.coredump.impl.CoreDumpOverviewViewProvider;
import com.sun.tools.visualvm.coredump.impl.CoreDumpProvider;
import java.io.File;
/**
* Support for coredumps in VisualVM.
*
* @author Tomas Hurka
*/
public final class CoreDumpSupport {
private static final String COREDUMPS_STORAGE_DIRNAME = "coredumps"; // NOI18N
private static final Object coredumpsStorageDirectoryLock = new Object();
// @GuardedBy coredumpsStorageDirectoryLock
private static File coredumpsStorageDirectory;
private static final Object coredumpsStorageDirectoryStringLock = new Object();
// @GuardedBy coredumpsStorageDirectoryStringLock
private static String coredumpsStorageDirectoryString;
private static CoreDumpOverviewViewProvider viewProvider = new CoreDumpOverviewViewProvider();
private static CoreDumpCategory category = new CoreDumpCategory();
private static final Object currentJDKHomeLock = new Object();
// @GuardedBy currentJDKHomeLock
private static String currentJDKHome;
/**
* Returns PluggableDataSourceViewProvider for Overview coredump subtab.
*
* @return PluggableDataSourceViewProvider for Overview coredump subtab.
*/
public static PluggableDataSourceViewProvider<CoreDump> getOverviewView() {
return viewProvider;
}
/**
* Returns SnapshotCategory instance for coredumps.
*
* @return SnapshotCategory instance for coredumps.
*/
public static SnapshotCategory getCategory() {
return category;
}
// TODO: should be moved to some public Utils class
/**
* Returns JDK_HOME for JDK running the actual VisualVM instance.
*
* @return JDK_HOME for JDK running the actual VisualVM instance.
*/
public static String getCurrentJDKHome() {
synchronized(currentJDKHomeLock) {
if (currentJDKHome == null) {
currentJDKHome = System.getProperty("java.home"); // NOI18N
String jreSuffix = File.separator + "jre"; // NOI18N
if (currentJDKHome.endsWith(jreSuffix)) currentJDKHome = currentJDKHome.substring(0, currentJDKHome.length() - jreSuffix.length());
}
return currentJDKHome;
}
}
static String getStorageDirectoryString() {
synchronized(coredumpsStorageDirectoryStringLock) {
if (coredumpsStorageDirectoryString == null)
coredumpsStorageDirectoryString = Storage.getPersistentStorageDirectoryString() + File.separator + COREDUMPS_STORAGE_DIRNAME;
return coredumpsStorageDirectoryString;
}
}
/**
* Returns storage directory for coredumps.
*
* @return storage directory for coredumps.
*/
public static File getStorageDirectory() {
synchronized(coredumpsStorageDirectoryLock) {
if (coredumpsStorageDirectory == null) {
String snapshotsStorageString = getStorageDirectoryString();
coredumpsStorageDirectory = new File(snapshotsStorageString);
if (coredumpsStorageDirectory.exists() && coredumpsStorageDirectory.isFile())
throw new IllegalStateException("Cannot create coredumps storage directory " + snapshotsStorageString + ", file in the way"); // NOI18N
if (coredumpsStorageDirectory.exists() && (!coredumpsStorageDirectory.canRead() || !coredumpsStorageDirectory.canWrite()))
throw new IllegalStateException("Cannot access coredumps storage directory " + snapshotsStorageString + ", read&write permission required"); // NOI18N
if (!Utils.prepareDirectory(coredumpsStorageDirectory))
throw new IllegalStateException("Cannot create coredumps storage directory " + snapshotsStorageString); // NOI18N
}
return coredumpsStorageDirectory;
}
}
/**
* Returns true if the storage directory for coredumps already exists, false otherwise.
*
* @return true if the storage directory for coredumps already exists, false otherwise.
*/
public static boolean storageDirectoryExists() {
return new File(getStorageDirectoryString()).isDirectory();
}
static void register() {
DataSourceDescriptorFactory.getDefault().registerProvider(new CoreDumpDescriptorProvider());
CoreDumpsContainer.sharedInstance();
CoreDumpProvider.register();
RegisteredSnapshotCategories.sharedInstance().registerCategory(category);
DataSourceViewsManager.sharedInstance().addViewProvider(viewProvider, CoreDump.class);
}
}