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
|
// **********************************************************************
//
// Copyright (c) 2003-2009 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
import Demo.*;
public class WorkQueue extends Thread
{
class CallbackEntry
{
AMD_Hello_sayHello cb;
int delay;
}
public synchronized void
run()
{
while(!_done)
{
if(_callbacks.size() == 0)
{
try
{
wait();
}
catch(java.lang.InterruptedException ex)
{
}
}
if(_callbacks.size() != 0)
{
//
// Get next work item.
//
CallbackEntry entry = (CallbackEntry)_callbacks.getFirst();
//
// Wait for the amount of time indicated in delay to
// emulate a process that takes a significant period of
// time to complete.
//
try
{
wait(entry.delay);
}
catch(java.lang.InterruptedException ex)
{
}
if(!_done)
{
//
// Print greeting and send response.
//
_callbacks.removeFirst();
System.err.println("Belated Hello World!");
entry.cb.ice_response();
}
}
}
//
// Throw exception for any outstanding requests.
//
java.util.Iterator<CallbackEntry> p = _callbacks.iterator();
while(p.hasNext())
{
CallbackEntry entry = p.next();
entry.cb.ice_exception(new RequestCanceledException());
}
}
public synchronized void
add(AMD_Hello_sayHello cb, int delay)
{
if(!_done)
{
//
// Add the work item.
//
CallbackEntry entry = new CallbackEntry();
entry.cb = cb;
entry.delay = delay;
if(_callbacks.size() == 0)
{
notify();
}
_callbacks.add(entry);
}
else
{
//
// Destroyed, throw exception.
//
cb.ice_exception(new RequestCanceledException());
}
}
public synchronized void
_destroy() // Thread.destroy is deprecated.
{
_done = true;
notify();
}
private java.util.LinkedList<CallbackEntry> _callbacks = new java.util.LinkedList<CallbackEntry>();
private boolean _done = false;
}
|
