-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-\r
-/*\r
- *\r
- * @author Toni Kalajainen\r
- */\r
-package org.simantics.utils.datastructures.disposable;\r
-\r
-import java.lang.reflect.Method;\r
-\r
-import org.simantics.utils.threads.IThreadWorkQueue;\r
-import org.simantics.utils.threads.SyncListenerList;\r
-\r
-/**\r
- * Base implementation of IDisposable. The subclass must implement doDispose()\r
- * method. It invoked at once in first dispose call. Subsequent calls to dispose\r
- * throws an AssertionError.\r
- * <p>\r
- * assertNotDisposed() ensures that the object has not beed disposed. If so,\r
- * AssertionError is thrown. assertNotDisposed() should be installed in all\r
- * public methods of subclass.\r
- * <p>\r
- * Object is disposed in finalize, if dispose has not been invoked explicitely.\r
- */\r
-public abstract class AbstractDisposable implements IDisposable {\r
-\r
- SyncListenerList<IDisposeListener> disposeListeners = null;\r
-\r
- private DisposeState disposeStatus = DisposeState.Alive;\r
-\r
- protected void assertNotDisposed() {\r
- if (isDisposed())\r
- throw new AssertionError(this + " is disposed.");\r
- }\r
-\r
- @Override\r
- public DisposeState getDisposeState() {\r
- return disposeStatus;\r
- }\r
- \r
- public boolean isDisposed() {\r
- return disposeStatus == DisposeState.Disposed;\r
- }\r
- \r
- public boolean isAlive() {\r
- return disposeStatus == DisposeState.Alive;\r
- }\r
- \r
- @Override\r
- public void dispose() {\r
- try {\r
- synchronized (this) {\r
- if (disposeStatus == DisposeState.Disposing)\r
- return;\r
- assertNotDisposed();\r
- disposeStatus = DisposeState.Disposing;\r
- }\r
- try {\r
- fireDisposed();\r
- } finally {\r
- doDispose();\r
- }\r
- } finally {\r
- synchronized(this) {\r
- disposeStatus = DisposeState.Disposed;\r
- }\r
- }\r
- }\r
- \r
- /**\r
- * Disposes if not disposed\r
- */\r
- public void safeDispose() { \r
- try {\r
- synchronized (this) {\r
- if (disposeStatus != DisposeState.Alive)\r
- return;\r
- disposeStatus = DisposeState.Disposing;\r
- }\r
- try {\r
- fireDisposed();\r
- } finally {\r
- doDispose();\r
- }\r
- } finally {\r
- synchronized(this) {\r
- disposeStatus = DisposeState.Disposed;\r
- }\r
- }\r
- }\r
-\r
- /**\r
- * Do dispose procedures. This method is invoked at most once.\r
- */\r
- protected abstract void doDispose();\r
-\r
- protected boolean hasDisposeListeners() {\r
- return disposeListeners!=null && !disposeListeners.isEmpty();\r
- }\r
-\r
- private final static Method onDisposed = SyncListenerList.getMethod(IDisposeListener.class, "onDisposed");\r
-\r
- private void fireDisposed() {\r
- if (disposeListeners==null) return;\r
- disposeListeners.fireEventSync(onDisposed, this);\r
- }\r
-\r
- @SuppressWarnings("unused")\r
- private void fireDisposedAsync() {\r
- if (disposeListeners==null) return;\r
- disposeListeners.fireEventAsync(onDisposed, this);\r
- }\r
-\r
- @Override\r
- public void addDisposeListener(IDisposeListener listener) {\r
- lazyGetListenerList().add(listener);\r
- }\r
-\r
- @Override\r
- public void addDisposeListener(IDisposeListener listener, IThreadWorkQueue thread) {\r
- lazyGetListenerList().add(thread, listener);\r
- }\r
-\r
- @Override\r
- public void removeDisposeListener(IDisposeListener listener) {\r
- if (disposeListeners==null) return;\r
- disposeListeners.remove(listener);\r
- }\r
-\r
- @Override\r
- public void removeDisposeListener(IDisposeListener listener, IThreadWorkQueue thread) {\r
- if (disposeListeners==null) return;\r
- disposeListeners.remove(thread, listener);\r
- }\r
- \r
- private synchronized SyncListenerList<IDisposeListener> lazyGetListenerList()\r
- {\r
- if (disposeListeners==null)\r
- disposeListeners = new SyncListenerList<IDisposeListener>(IDisposeListener.class);\r
- return disposeListeners;\r
- }\r
- \r
- /*\r
- @Override\r
- protected void finalize() throws Throwable {\r
- try {\r
- safeDispose();\r
- } finally {\r
- super.finalize();\r
- }\r
- }\r
- */\r
- \r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+
+/*
+ *
+ * @author Toni Kalajainen
+ */
+package org.simantics.utils.datastructures.disposable;
+
+import java.lang.reflect.Method;
+
+import org.simantics.utils.threads.IThreadWorkQueue;
+import org.simantics.utils.threads.SyncListenerList;
+
+/**
+ * Base implementation of IDisposable. The subclass must implement doDispose()
+ * method. It invoked at once in first dispose call. Subsequent calls to dispose
+ * throws an AssertionError.
+ * <p>
+ * assertNotDisposed() ensures that the object has not beed disposed. If so,
+ * AssertionError is thrown. assertNotDisposed() should be installed in all
+ * public methods of subclass.
+ * <p>
+ * Object is disposed in finalize, if dispose has not been invoked explicitely.
+ */
+public abstract class AbstractDisposable implements IDisposable {
+
+ SyncListenerList<IDisposeListener> disposeListeners = null;
+
+ private DisposeState disposeStatus = DisposeState.Alive;
+
+ protected void assertNotDisposed() {
+ if (isDisposed())
+ throw new AssertionError(this + " is disposed.");
+ }
+
+ @Override
+ public DisposeState getDisposeState() {
+ return disposeStatus;
+ }
+
+ public boolean isDisposed() {
+ return disposeStatus == DisposeState.Disposed;
+ }
+
+ public boolean isAlive() {
+ return disposeStatus == DisposeState.Alive;
+ }
+
+ @Override
+ public void dispose() {
+ try {
+ synchronized (this) {
+ if (disposeStatus == DisposeState.Disposing)
+ return;
+ assertNotDisposed();
+ disposeStatus = DisposeState.Disposing;
+ }
+ try {
+ fireDisposed();
+ } finally {
+ doDispose();
+ }
+ } finally {
+ synchronized(this) {
+ disposeStatus = DisposeState.Disposed;
+ }
+ }
+ }
+
+ /**
+ * Disposes if not disposed
+ */
+ public void safeDispose() {
+ try {
+ synchronized (this) {
+ if (disposeStatus != DisposeState.Alive)
+ return;
+ disposeStatus = DisposeState.Disposing;
+ }
+ try {
+ fireDisposed();
+ } finally {
+ doDispose();
+ }
+ } finally {
+ synchronized(this) {
+ disposeStatus = DisposeState.Disposed;
+ }
+ }
+ }
+
+ /**
+ * Do dispose procedures. This method is invoked at most once.
+ */
+ protected abstract void doDispose();
+
+ protected boolean hasDisposeListeners() {
+ return disposeListeners!=null && !disposeListeners.isEmpty();
+ }
+
+ private final static Method onDisposed = SyncListenerList.getMethod(IDisposeListener.class, "onDisposed");
+
+ private void fireDisposed() {
+ if (disposeListeners==null) return;
+ disposeListeners.fireEventSync(onDisposed, this);
+ }
+
+ @SuppressWarnings("unused")
+ private void fireDisposedAsync() {
+ if (disposeListeners==null) return;
+ disposeListeners.fireEventAsync(onDisposed, this);
+ }
+
+ @Override
+ public void addDisposeListener(IDisposeListener listener) {
+ lazyGetListenerList().add(listener);
+ }
+
+ @Override
+ public void addDisposeListener(IDisposeListener listener, IThreadWorkQueue thread) {
+ lazyGetListenerList().add(thread, listener);
+ }
+
+ @Override
+ public void removeDisposeListener(IDisposeListener listener) {
+ if (disposeListeners==null) return;
+ disposeListeners.remove(listener);
+ }
+
+ @Override
+ public void removeDisposeListener(IDisposeListener listener, IThreadWorkQueue thread) {
+ if (disposeListeners==null) return;
+ disposeListeners.remove(thread, listener);
+ }
+
+ private synchronized SyncListenerList<IDisposeListener> lazyGetListenerList()
+ {
+ if (disposeListeners==null)
+ disposeListeners = new SyncListenerList<IDisposeListener>(IDisposeListener.class);
+ return disposeListeners;
+ }
+
+ /*
+ @Override
+ protected void finalize() throws Throwable {
+ try {
+ safeDispose();
+ } finally {
+ super.finalize();
+ }
+ }
+ */
+
+}
Code Review / simantics / platform.git / blobdiff