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Posted to commits@felix.apache.org by cz...@apache.org on 2007/08/15 11:56:32 UTC
svn commit: r566080 -
/felix/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/tasks/DispatchTask.java
Author: cziegeler
Date: Wed Aug 15 02:56:31 2007
New Revision: 566080
URL: http://svn.apache.org/viewvc?view=rev&rev=566080
Log:
Remove private null scheduler implementation and use public one
Modified:
felix/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/tasks/DispatchTask.java
Modified: felix/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/tasks/DispatchTask.java
URL: http://svn.apache.org/viewvc/felix/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/tasks/DispatchTask.java?view=diff&rev=566080&r1=566079&r2=566080
==============================================================================
--- felix/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/tasks/DispatchTask.java (original)
+++ felix/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/tasks/DispatchTask.java Wed Aug 15 02:56:31 2007
@@ -1,4 +1,4 @@
-/*
+/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
@@ -22,50 +22,21 @@
import org.apache.felix.eventadmin.impl.dispatch.TaskProducer;
/**
- * This class is the core of the event dispatching (for both, synchronous and
+ * This class is the core of the event dispatching (for both, synchronous and
* asynchronous). It implements handover and timeout capabilities.
- *
+ *
* @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
*/
public class DispatchTask implements Runnable
-{
- // A null scheduler object that does not schedule given tasks
- private static final Scheduler NULL_SCHEDULER = new Scheduler()
- {
- /**
- * This is a null object and will do nothing with the given task
- *
- * @param task A task that is not used
- *
- * @see org.apache.felix.eventadmin.impl.dispatch.Scheduler#schedule(java.lang.Runnable)
- */
- public void schedule(final Runnable task)
- {
- // This is a null object and will do nothing with the given task
- }
-
- /**
- * This is a null object and will do nothing with the given task
- *
- * @param task A task that is not used
- * @parma nice A value that is not used
- *
- * @see org.apache.felix.eventadmin.impl.dispatch.Scheduler#schedule(java.lang.Runnable, int)
- */
- public void schedule(final Runnable task, final int nice)
- {
- // This is a null object and will do nothing with the given task
- }
- };
-
+{
// A null producer object that will return null on any call to next()
private static final TaskProducer NULL_PRODUCER = new TaskProducer()
{
/**
* This is a null object and will return <tt>null</tt>
- *
+ *
* @return <tt>null</tt>
- *
+ *
* @see org.apache.felix.eventadmin.impl.dispatch.TaskProducer#next()
*/
public HandlerTask next()
@@ -79,17 +50,17 @@
{
/**
* This is a null object that will do nothing.
- *
+ *
* @parma task A task that is not used
- *
+ *
* @see org.apache.felix.eventadmin.impl.tasks.HandoverTask#execute(org.apache.felix.eventadmin.impl.tasks.DispatchTask)
*/
public void execute(final DispatchTask task)
{
// This is a null object that will do nothing.
- }
+ }
};
-
+
// The internal lock for this object used instead synchronized(this)
final Object m_lock = new Object();
@@ -111,9 +82,9 @@
private boolean m_isHolding = false;
/**
- * The constructor of the object.
- *
- * @param producer The producer (i.e., the event queue) that provides the next
+ * The constructor of the object.
+ *
+ * @param producer The producer (i.e., the event queue) that provides the next
* tasks
* @param scheduler The scheduler to use for timeout actions
* @param handover The callback to use on timeouts and handovers
@@ -121,13 +92,13 @@
public DispatchTask(final TaskProducer producer, final Scheduler scheduler,
final HandoverTask handover)
{
- m_producer = producer;
+ this.m_producer = producer;
- m_scheduler = scheduler;
+ this.m_scheduler = scheduler;
- m_handover = handover;
+ this.m_handover = handover;
}
-
+
/*
* Construct a new object from a old one.
*/
@@ -137,107 +108,107 @@
}
/**
- * This will loop until the producer returns <tt>null</tt>. Until then the
+ * This will loop until the producer returns <tt>null</tt>. Until then the
* returned tasks are executed.
- *
+ *
* @see java.lang.Runnable#run()
*/
public void run()
{
- for (HandlerTask manager = m_producer.next(); null != manager; manager = m_producer
+ for (HandlerTask manager = this.m_producer.next(); null != manager; manager = this.m_producer
.next())
{
- synchronized (m_lock)
+ synchronized (this.m_lock)
{
- // Set-up the timeout
- m_blackListTask = new BlackListTask(manager);
+ // Set-up the timeout
+ this.m_blackListTask = new BlackListTask(manager);
- m_scheduler.schedule(m_blackListTask);
+ this.m_scheduler.schedule(this.m_blackListTask);
}
// HandlerTask does catch exceptions hence, we don't need to do it.
manager.execute();
- synchronized (m_lock)
+ synchronized (this.m_lock)
{
- // release the timeout
- m_blackListTask.cancel();
+ // release the timeout
+ this.m_blackListTask.cancel();
}
}
}
/**
- * This method will trigger a callback to the handover callback and stop this
+ * This method will trigger a callback to the handover callback and stop this
* task.
*/
public void handover()
{
- synchronized (m_lock)
+ synchronized (this.m_lock)
{
// release the timeout
- m_blackListTask.cancel();
+ this.m_blackListTask.cancel();
// spin-off a new thread
- m_handover.execute(new DispatchTask(this));
+ this.m_handover.execute(new DispatchTask(this));
- stop();
+ this.stop();
}
}
-
+
/**
* This method stops the tasks without a handover
*/
public void stop()
{
- synchronized (m_lock)
+ synchronized (this.m_lock)
{
// release the timeout
- m_blackListTask.cancel();
+ this.m_blackListTask.cancel();
- m_handover = NULL_HANDOVER;
+ this.m_handover = NULL_HANDOVER;
- m_producer = NULL_PRODUCER;
+ this.m_producer = NULL_PRODUCER;
- m_scheduler = NULL_SCHEDULER;
+ this.m_scheduler = Scheduler.NULL_SCHEDULER;
}
}
/**
- * This will pause the task (including its timeout clock) until a call to
+ * This will pause the task (including its timeout clock) until a call to
* <tt>resume()</tt>
*/
public void hold()
{
- synchronized (m_lock)
+ synchronized (this.m_lock)
{
// release the timeout
- m_blackListTask.cancel();
+ this.m_blackListTask.cancel();
// record the time that we already used
- int pastTime = (int) (System.currentTimeMillis() - m_blackListTask
+ int pastTime = (int) (System.currentTimeMillis() - this.m_blackListTask
.getTime());
// spin-off a new thread
- m_handover.execute(new DispatchTask(this));
+ this.m_handover.execute(new DispatchTask(this));
// block until a call to resume()
- m_isHolding = true;
+ this.m_isHolding = true;
- while (m_isHolding)
+ while (this.m_isHolding)
{
try
{
- m_lock.wait();
+ this.m_lock.wait();
} catch (InterruptedException e)
{
}
}
// restore the timeout
- m_blackListTask = new BlackListTask(m_blackListTask,
+ this.m_blackListTask = new BlackListTask(this.m_blackListTask,
System.currentTimeMillis() - pastTime);
- m_scheduler.schedule(m_blackListTask, pastTime);
+ this.m_scheduler.schedule(this.m_blackListTask, pastTime);
}
}
@@ -246,11 +217,11 @@
*/
public void resume()
{
- synchronized (m_lock)
+ synchronized (this.m_lock)
{
- m_isHolding = false;
+ this.m_isHolding = false;
- m_lock.notifyAll();
+ this.m_lock.notifyAll();
}
}
@@ -272,12 +243,12 @@
{
this(manager, System.currentTimeMillis());
}
-
+
BlackListTask(final HandlerTask manager, final long time)
{
- m_manager = manager;
-
- m_time = time;
+ this.m_manager = manager;
+
+ this.m_time = time;
}
BlackListTask(final BlackListTask old, final long time)
@@ -290,24 +261,24 @@
*/
public long getTime()
{
- return m_time;
+ return this.m_time;
}
/**
- * We have been triggered hence, blacklist the handler except if we are
+ * We have been triggered hence, blacklist the handler except if we are
* already canceled
- *
+ *
* @see java.lang.Runnable#run()
*/
public void run()
{
- synchronized (m_lock)
+ synchronized (DispatchTask.this.m_lock)
{
- if (!m_canceled)
+ if (!this.m_canceled)
{
- m_manager.blackListHandler();
+ this.m_manager.blackListHandler();
- handover();
+ DispatchTask.this.handover();
}
}
}
@@ -317,9 +288,9 @@
*/
public void cancel()
{
- synchronized (m_lock)
+ synchronized (DispatchTask.this.m_lock)
{
- m_canceled = true;
+ this.m_canceled = true;
}
}
}