-/*******************************************************************************\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
- * @author Toni Kalajainen\r
- */\r
-package org.simantics.utils.threads;\r
-\r
-import java.lang.reflect.InvocationTargetException;\r
-import java.lang.reflect.Method;\r
-import java.util.ArrayList;\r
-import java.util.Collection;\r
-import java.util.HashMap;\r
-import java.util.List;\r
-import java.util.Map;\r
-import java.util.Map.Entry;\r
-\r
-import org.simantics.utils.threads.internal.ListenerList;\r
-\r
-/**\r
- * \r
- * @author Toni Kalajainen\r
- *\r
- * @see ListenerList Simple listener list\r
- *\r
- * @param <T>\r
- */\r
-public class SyncListenerList<T> {\r
-\r
- /** internal use */\r
- Map<IThreadWorkQueue, ListenerList<T>> lists =\r
- new HashMap<IThreadWorkQueue, ListenerList<T>>(2);\r
- \r
- /** Snapshot version */\r
- Map<IThreadWorkQueue, T[]> snapshot;\r
- \r
- Boolean requiresThreadSwitching = Boolean.FALSE;\r
- \r
- /** \r
- * The class of T\r
- */\r
- private final Class<T> componentType; \r
- \r
- @SuppressWarnings("unchecked")\r
- public SyncListenerList(Class<?> componentType)\r
- {\r
- this.componentType = (Class<T>) componentType; \r
- }\r
- \r
- /**\r
- * Add listener to the list\r
- * @param thread thread to use to handle the event\r
- * @param listener\r
- */\r
- public synchronized void add(IThreadWorkQueue thread, T listener)\r
- {\r
- if (listener==null)\r
- throw new IllegalArgumentException("null");\r
- \r
- snapshot = null;\r
- ListenerList<T> list = lists.get(thread);\r
- if (list==null) {\r
- list = new ListenerList<T>(componentType);\r
- lists.put(thread, list);\r
- }\r
- list.add(listener);\r
- if (thread!=CurrentThread.getThreadAccess())\r
- requiresThreadSwitching = Boolean.TRUE;\r
- }\r
- \r
- /**\r
- * Contains elements that require thread switching.\r
- * @return true if contains elements with thread access other than current thread\r
- */\r
- public synchronized Boolean containsContextSwitchingListeners() {\r
- if (requiresThreadSwitching==null)\r
- requiresThreadSwitching = _HasContextSwitching();\r
- return requiresThreadSwitching;\r
- }\r
- \r
- /**\r
- * \r
- * @return true if contains listeners that require context switching\r
- */\r
- private boolean _HasContextSwitching()\r
- {\r
- if (lists.size()!=0) return false;\r
- if (lists.size()>1) return false;\r
- Entry<IThreadWorkQueue, ListenerList<T>> e = lists.entrySet().iterator().next();\r
- if (e.getKey()!=CurrentThread.getThreadAccess()) return false;\r
- return !e.getValue().isEmpty();\r
- }\r
-\r
- /**\r
- * Add listener to the list. Listener will be invoked in the thread that\r
- * happens to be running at the time of events.\r
- * \r
- * @param listener\r
- */\r
- public void add(T listener)\r
- {\r
- if (listener==null)\r
- throw new IllegalArgumentException("null");\r
- add(CurrentThread.getThreadAccess(), listener);\r
- }\r
-\r
- /**\r
- * Remove listener from the list\r
- * @param thread thread to use to handle the event\r
- * @param listener\r
- */\r
- public synchronized void remove(IThreadWorkQueue thread, T listener)\r
- {\r
- snapshot = null;\r
- ListenerList<T> list = lists.get(thread);\r
- if (list==null) return;\r
- list.remove(listener);\r
- if (list.isEmpty())\r
- lists.remove(thread);\r
- if (isEmpty()) {\r
- requiresThreadSwitching = Boolean.FALSE;\r
- return;\r
- }\r
- if (requiresThreadSwitching==null) return; \r
- if (!requiresThreadSwitching) return;\r
- if (thread==CurrentThread.getThreadAccess()) return;\r
- requiresThreadSwitching = null;\r
- }\r
-\r
- public void remove(T listener)\r
- {\r
- remove(CurrentThread.getThreadAccess(), listener);\r
- }\r
- \r
- public synchronized boolean isEmpty()\r
- {\r
- return lists.size()==0;\r
- }\r
- \r
- public synchronized void clear()\r
- {\r
- requiresThreadSwitching = Boolean.FALSE;\r
- lists.clear();\r
- snapshot = null;\r
- }\r
- \r
- \r
- public synchronized Map<IThreadWorkQueue, T[]> getSnapshot()\r
- {\r
- if (snapshot==null) {\r
- snapshot = new HashMap<IThreadWorkQueue, T[]>(lists.size());\r
- for (Entry<IThreadWorkQueue, ListenerList<T>> e : lists.entrySet())\r
- {\r
- T[] list = e.getValue().getListeners();\r
- snapshot.put(e.getKey(), list);\r
- }\r
- }\r
- return snapshot;\r
- }\r
-\r
- public void fireEventAsync(final Method m, final Object ... args)\r
- {\r
- if (m==null)\r
- throw new IllegalArgumentException("null");\r
- if (isEmpty()) return; \r
- Map<IThreadWorkQueue, T[]> snapshot = getSnapshot(); \r
- for (Entry<IThreadWorkQueue, T[]> e : snapshot.entrySet())\r
- {\r
- final IThreadWorkQueue thread = e.getKey();\r
- final T[] list = e.getValue(); \r
- Runnable r = new Runnable() {\r
- @Override\r
- public void run() {\r
- for (T t : list)\r
- try {\r
- m.invoke(t, args);\r
- } catch (RuntimeException e) {\r
- e.printStackTrace();\r
- } catch (IllegalAccessException e) {\r
- e.printStackTrace();\r
- } catch (InvocationTargetException e) {\r
- e.getCause().printStackTrace();\r
- }\r
- }\r
- };\r
- ThreadUtils.asyncExec(thread, r); \r
- }\r
- }\r
-/* \r
- * Version that does not use ThreadUtils\r
- public void fireEventSync(final Method m, final Object ... args)\r
- {\r
- Map<IThreadAccess, T[]> snapshot = getSnapshot(); \r
- final Semaphore s = new Semaphore(0);\r
- \r
- int countAsyncThreads = 0;\r
- \r
- // todo use snapshot version of lists\r
- for (Entry<IThreadAccess, T[]> e : snapshot.entrySet())\r
- {\r
- final IThreadAccess thread = e.getKey();\r
- if (!thread.currentThreadAccess()) {\r
- countAsyncThreads++;\r
- continue;\r
- }\r
- }\r
- // Start async prosessing\r
- for (Entry<IThreadAccess, T[]> e : snapshot.entrySet())\r
- {\r
- final IThreadAccess thread = e.getKey();\r
- if (thread.currentThreadAccess()) {\r
- countAsyncThreads++;\r
- continue;\r
- }\r
- final T[] list = e.getValue(); \r
- Runnable r = new Runnable() {\r
- @Override\r
- public void run() {\r
- try {\r
- for (T t : list)\r
- {\r
- try {\r
- m.invoke(t, args);\r
- } catch (RuntimeException e) {\r
- e.printStackTrace();\r
- } catch (IllegalAccessException e) {\r
- e.printStackTrace();\r
- } catch (InvocationTargetException e) {\r
- e.printStackTrace();\r
- }\r
- }\r
- } finally {\r
- // Signal ready\r
- s.release();\r
- }\r
- }\r
- };\r
- ThreadUtils.asyncExec(thread, r);\r
- }\r
- // Start local thread processing\r
- for (Entry<IThreadAccess, T[]> e : snapshot.entrySet())\r
- {\r
- final T[] list = e.getValue(); \r
- for (T t : list)\r
- {\r
- try {\r
- m.invoke(t, args);\r
- } catch (RuntimeException e1) {\r
- e1.printStackTrace();\r
- } catch (IllegalAccessException e2) {\r
- e2.printStackTrace();\r
- } catch (InvocationTargetException e3) {\r
- e3.printStackTrace();\r
- }\r
- }\r
- } \r
- \r
- // wait until all threads are ready\r
- try {\r
- s.acquire(countAsyncThreads);\r
- } catch (InterruptedException e) {\r
- }\r
- }\r
- */\r
- \r
- public void addExecutables(Collection<Executable> container, final Method m, final Object ... args)\r
- {\r
- Map<IThreadWorkQueue, T[]> snapshot = getSnapshot(); \r
- \r
- for (Entry<IThreadWorkQueue, T[]> e : snapshot.entrySet())\r
- {\r
- IThreadWorkQueue thread = e.getKey();\r
- final T[] list = e.getValue();\r
- Runnable r = new Runnable() {\r
- @Override\r
- public void run() {\r
- for (T t : list)\r
- {\r
- try {\r
- m.invoke(t, args);\r
- } catch (RuntimeException e) {\r
- e.printStackTrace();\r
- } catch (IllegalAccessException e) {\r
- e.printStackTrace();\r
- } catch (InvocationTargetException e) {\r
- e.getCause().printStackTrace();\r
- }\r
- }\r
- }\r
- };\r
- \r
- container.add( new Executable(thread, r) );\r
- }\r
- }\r
- \r
- public Executable[] getExecutables(final Method m, final Object ... args)\r
- {\r
- Map<IThreadWorkQueue, T[]> snapshot = getSnapshot();\r
- List<Executable> container =\r
- new ArrayList<Executable>(snapshot.size());\r
- addExecutables(container, m, args);\r
- return container.toArray(new Executable[container.size()]);\r
- }\r
- \r
- // Version that uses thread utils\r
- public void fireEventSync(final Method m, final Object ... args)\r
- {\r
- if (m==null)\r
- throw new IllegalArgumentException("null");\r
- if (isEmpty()) return;\r
- ThreadUtils.multiSyncExec(getExecutables(m, args));\r
- }\r
- \r
- public static Method getMethod(Class<?> clazz, String name)\r
- {\r
- int count = 0;\r
- Method result = null;\r
- for (Method m : clazz.getMethods())\r
- {\r
- if (!m.getName().equals(name)) continue;\r
- count++;\r
- result = m;\r
- }\r
- if (count!=1) throw new Error("Unexpected method \""+name+"\" count in class "+clazz.getName());\r
- return result;\r
- }\r
- \r
- public synchronized T[] getListenersByThread(IThreadWorkQueue ta) \r
- {\r
- ListenerList<T> l = lists.get(ta);\r
- if (l==null) return null;\r
- return l.getListeners();\r
- }\r
- \r
- /**\r
- * Is the list executable in current thread. \r
- * \r
- * @return <code>true</code> if executable\r
- */\r
- public synchronized boolean executableInCurrentThread() {\r
- for (IThreadWorkQueue ta : lists.keySet())\r
- if (!ta.currentThreadAccess())\r
- return false;\r
- return true;\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.threads;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.simantics.utils.threads.internal.ListenerList;
+
+/**
+ *
+ * @author Toni Kalajainen
+ *
+ * @see ListenerList Simple listener list
+ *
+ * @param <T>
+ */
+public class SyncListenerList<T> {
+
+ /** internal use */
+ Map<IThreadWorkQueue, ListenerList<T>> lists =
+ new HashMap<IThreadWorkQueue, ListenerList<T>>(2);
+
+ /** Snapshot version */
+ Map<IThreadWorkQueue, T[]> snapshot;
+
+ Boolean requiresThreadSwitching = Boolean.FALSE;
+
+ /**
+ * The class of T
+ */
+ private final Class<T> componentType;
+
+ @SuppressWarnings("unchecked")
+ public SyncListenerList(Class<?> componentType)
+ {
+ this.componentType = (Class<T>) componentType;
+ }
+
+ /**
+ * Add listener to the list
+ * @param thread thread to use to handle the event
+ * @param listener
+ */
+ public synchronized void add(IThreadWorkQueue thread, T listener)
+ {
+ if (listener==null)
+ throw new IllegalArgumentException("null");
+
+ snapshot = null;
+ ListenerList<T> list = lists.get(thread);
+ if (list==null) {
+ list = new ListenerList<T>(componentType);
+ lists.put(thread, list);
+ }
+ list.add(listener);
+ if (thread!=CurrentThread.getThreadAccess())
+ requiresThreadSwitching = Boolean.TRUE;
+ }
+
+ /**
+ * Contains elements that require thread switching.
+ * @return true if contains elements with thread access other than current thread
+ */
+ public synchronized Boolean containsContextSwitchingListeners() {
+ if (requiresThreadSwitching==null)
+ requiresThreadSwitching = _HasContextSwitching();
+ return requiresThreadSwitching;
+ }
+
+ /**
+ *
+ * @return true if contains listeners that require context switching
+ */
+ private boolean _HasContextSwitching()
+ {
+ if (lists.size()!=0) return false;
+ if (lists.size()>1) return false;
+ Entry<IThreadWorkQueue, ListenerList<T>> e = lists.entrySet().iterator().next();
+ if (e.getKey()!=CurrentThread.getThreadAccess()) return false;
+ return !e.getValue().isEmpty();
+ }
+
+ /**
+ * Add listener to the list. Listener will be invoked in the thread that
+ * happens to be running at the time of events.
+ *
+ * @param listener
+ */
+ public void add(T listener)
+ {
+ if (listener==null)
+ throw new IllegalArgumentException("null");
+ add(CurrentThread.getThreadAccess(), listener);
+ }
+
+ /**
+ * Remove listener from the list
+ * @param thread thread to use to handle the event
+ * @param listener
+ */
+ public synchronized void remove(IThreadWorkQueue thread, T listener)
+ {
+ snapshot = null;
+ ListenerList<T> list = lists.get(thread);
+ if (list==null) return;
+ list.remove(listener);
+ if (list.isEmpty())
+ lists.remove(thread);
+ if (isEmpty()) {
+ requiresThreadSwitching = Boolean.FALSE;
+ return;
+ }
+ if (requiresThreadSwitching==null) return;
+ if (!requiresThreadSwitching) return;
+ if (thread==CurrentThread.getThreadAccess()) return;
+ requiresThreadSwitching = null;
+ }
+
+ public void remove(T listener)
+ {
+ remove(CurrentThread.getThreadAccess(), listener);
+ }
+
+ public synchronized boolean isEmpty()
+ {
+ return lists.size()==0;
+ }
+
+ public synchronized void clear()
+ {
+ requiresThreadSwitching = Boolean.FALSE;
+ lists.clear();
+ snapshot = null;
+ }
+
+
+ public synchronized Map<IThreadWorkQueue, T[]> getSnapshot()
+ {
+ if (snapshot==null) {
+ snapshot = new HashMap<IThreadWorkQueue, T[]>(lists.size());
+ for (Entry<IThreadWorkQueue, ListenerList<T>> e : lists.entrySet())
+ {
+ T[] list = e.getValue().getListeners();
+ snapshot.put(e.getKey(), list);
+ }
+ }
+ return snapshot;
+ }
+
+ public void fireEventAsync(final Method m, final Object ... args)
+ {
+ if (m==null)
+ throw new IllegalArgumentException("null");
+ if (isEmpty()) return;
+ Map<IThreadWorkQueue, T[]> snapshot = getSnapshot();
+ for (Entry<IThreadWorkQueue, T[]> e : snapshot.entrySet())
+ {
+ final IThreadWorkQueue thread = e.getKey();
+ final T[] list = e.getValue();
+ Runnable r = new Runnable() {
+ @Override
+ public void run() {
+ for (T t : list)
+ try {
+ m.invoke(t, args);
+ } catch (RuntimeException e) {
+ e.printStackTrace();
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.getCause().printStackTrace();
+ }
+ }
+ };
+ ThreadUtils.asyncExec(thread, r);
+ }
+ }
+/*
+ * Version that does not use ThreadUtils
+ public void fireEventSync(final Method m, final Object ... args)
+ {
+ Map<IThreadAccess, T[]> snapshot = getSnapshot();
+ final Semaphore s = new Semaphore(0);
+
+ int countAsyncThreads = 0;
+
+ // todo use snapshot version of lists
+ for (Entry<IThreadAccess, T[]> e : snapshot.entrySet())
+ {
+ final IThreadAccess thread = e.getKey();
+ if (!thread.currentThreadAccess()) {
+ countAsyncThreads++;
+ continue;
+ }
+ }
+ // Start async prosessing
+ for (Entry<IThreadAccess, T[]> e : snapshot.entrySet())
+ {
+ final IThreadAccess thread = e.getKey();
+ if (thread.currentThreadAccess()) {
+ countAsyncThreads++;
+ continue;
+ }
+ final T[] list = e.getValue();
+ Runnable r = new Runnable() {
+ @Override
+ public void run() {
+ try {
+ for (T t : list)
+ {
+ try {
+ m.invoke(t, args);
+ } catch (RuntimeException e) {
+ e.printStackTrace();
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.printStackTrace();
+ }
+ }
+ } finally {
+ // Signal ready
+ s.release();
+ }
+ }
+ };
+ ThreadUtils.asyncExec(thread, r);
+ }
+ // Start local thread processing
+ for (Entry<IThreadAccess, T[]> e : snapshot.entrySet())
+ {
+ final T[] list = e.getValue();
+ for (T t : list)
+ {
+ try {
+ m.invoke(t, args);
+ } catch (RuntimeException e1) {
+ e1.printStackTrace();
+ } catch (IllegalAccessException e2) {
+ e2.printStackTrace();
+ } catch (InvocationTargetException e3) {
+ e3.printStackTrace();
+ }
+ }
+ }
+
+ // wait until all threads are ready
+ try {
+ s.acquire(countAsyncThreads);
+ } catch (InterruptedException e) {
+ }
+ }
+ */
+
+ public void addExecutables(Collection<Executable> container, final Method m, final Object ... args)
+ {
+ Map<IThreadWorkQueue, T[]> snapshot = getSnapshot();
+
+ for (Entry<IThreadWorkQueue, T[]> e : snapshot.entrySet())
+ {
+ IThreadWorkQueue thread = e.getKey();
+ final T[] list = e.getValue();
+ Runnable r = new Runnable() {
+ @Override
+ public void run() {
+ for (T t : list)
+ {
+ try {
+ m.invoke(t, args);
+ } catch (RuntimeException e) {
+ e.printStackTrace();
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.getCause().printStackTrace();
+ }
+ }
+ }
+ };
+
+ container.add( new Executable(thread, r) );
+ }
+ }
+
+ public Executable[] getExecutables(final Method m, final Object ... args)
+ {
+ Map<IThreadWorkQueue, T[]> snapshot = getSnapshot();
+ List<Executable> container =
+ new ArrayList<Executable>(snapshot.size());
+ addExecutables(container, m, args);
+ return container.toArray(new Executable[container.size()]);
+ }
+
+ // Version that uses thread utils
+ public void fireEventSync(final Method m, final Object ... args)
+ {
+ if (m==null)
+ throw new IllegalArgumentException("null");
+ if (isEmpty()) return;
+ ThreadUtils.multiSyncExec(getExecutables(m, args));
+ }
+
+ public static Method getMethod(Class<?> clazz, String name)
+ {
+ int count = 0;
+ Method result = null;
+ for (Method m : clazz.getMethods())
+ {
+ if (!m.getName().equals(name)) continue;
+ count++;
+ result = m;
+ }
+ if (count!=1) throw new Error("Unexpected method \""+name+"\" count in class "+clazz.getName());
+ return result;
+ }
+
+ public synchronized T[] getListenersByThread(IThreadWorkQueue ta)
+ {
+ ListenerList<T> l = lists.get(ta);
+ if (l==null) return null;
+ return l.getListeners();
+ }
+
+ /**
+ * Is the list executable in current thread.
+ *
+ * @return <code>true</code> if executable
+ */
+ public synchronized boolean executableInCurrentThread() {
+ for (IThreadWorkQueue ta : lists.keySet())
+ if (!ta.currentThreadAccess())
+ return false;
+ return true;
+ }
+
+}
Code Review / simantics / platform.git / blobdiff