1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Copyright (c) 2009, 2011, 2012 Eike Stepper (Berlin, Germany) and others.
* 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.concurrent;
import org.eclipse.net4j.util.container.IManagedContainer;
import org.eclipse.net4j.util.event.EventUtil;
import org.eclipse.net4j.util.event.IListener;
import org.eclipse.net4j.util.factory.Factory;
import org.eclipse.net4j.util.lifecycle.ILifecycle;
import org.eclipse.net4j.util.lifecycle.LifecycleException;
import org.eclipse.net4j.util.lifecycle.LifecycleState;
import org.eclipse.net4j.util.lifecycle.LifecycleUtil;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
/**
* @author Eike Stepper
* @since 2.0
*/
public class ExecutorServiceFactory extends Factory
{
public static final String PRODUCT_GROUP = "org.eclipse.net4j.executorServices"; //$NON-NLS-1$
public static final String TYPE = "default"; //$NON-NLS-1$
public static final String DEFAULT_THREAD_GROUP_NAME = "net4j"; //$NON-NLS-1$
public ExecutorServiceFactory()
{
super(PRODUCT_GROUP, TYPE);
}
public ExecutorService create(String threadGroupName)
{
if (threadGroupName == null)
{
threadGroupName = DEFAULT_THREAD_GROUP_NAME;
}
final ThreadGroup threadGroup = new ThreadGroup(threadGroupName);
ThreadFactory threadFactory = new ThreadFactory()
{
private int num;
public Thread newThread(Runnable r)
{
Thread thread = new Thread(threadGroup, r, threadGroup.getName() + "-Thread-" + ++num);
thread.setDaemon(true);
return thread;
}
};
final ExecutorService executorService = Executors.newCachedThreadPool(threadFactory);
return LifecycleUtil.delegateLifecycle(getClass().getClassLoader(), executorService, ExecutorService.class,
new ILifecycle()
{
private boolean active;
public void activate() throws LifecycleException
{
active = true;
}
public Exception deactivate()
{
try
{
executorService.shutdown();
active = false;
return null;
}
catch (Exception ex)
{
return ex;
}
}
public LifecycleState getLifecycleState()
{
return active ? LifecycleState.ACTIVE : LifecycleState.INACTIVE;
}
public boolean isActive()
{
return active;
}
public void addListener(IListener listener)
{
// Do nothing
}
public void removeListener(IListener listener)
{
// Do nothing
}
public IListener[] getListeners()
{
return EventUtil.NO_LISTENERS;
}
public boolean hasListeners()
{
return false;
}
@Override
public String toString()
{
return "CachedThreadPool";
}
});
}
public static ExecutorService get(IManagedContainer container)
{
return (ExecutorService)container.getElement(PRODUCT_GROUP, TYPE, null);
}
}
|
