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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
Derby - Class org.apache.derbyTesting.unitTests.harness.T_Bomb
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 regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derbyTesting.unitTests.harness;
import org.apache.derby.iapi.services.property.PropertyUtil;
import org.apache.derby.iapi.services.context.ContextService;
import org.apache.derby.iapi.services.context.Context;
import java.security.PrivilegedAction;
import java.security.AccessController;
import java.util.Vector;
public class T_Bomb implements Runnable {
public static String BOMB_DELAY_PN="derby.testing.BombDelay";
private static int DEFAULT_BOMB_DELAY=3600000; //1 hour
private static T_Bomb me;
private Thread t;
private Vector<T_Bombable> v;
private long delay;
private boolean armed = false;
private T_Bomb()
{
delay =
PropertyUtil.getSystemInt(BOMB_DELAY_PN,0,
Integer.MAX_VALUE,
DEFAULT_BOMB_DELAY);
v = new Vector<T_Bombable>();
t = new Thread(this);
t.setDaemon(true);
t.start();
}
/**
Make an armed bomb set to go off in 1 hour.
*/
public synchronized static void makeBomb() {
if (me==null) me = new T_Bomb();
me.armBomb();
}
/**
Arm a bomb to go off. If the bomb does not exist
make it.
*/
public synchronized void armBomb() {
if (me == null) me = new T_Bomb();
me.armed = true;
}
/**
Cause a bomb to explode. If the bomb does not exist
make it.
*/
public synchronized static void explodeBomb() {
if (me == null) me = new T_Bomb();
me.armed = true;
me.blowUp();
}
public synchronized static void registerBombable(T_Bombable b)
{
if (me == null) me = new T_Bomb();
me.v.addElement(b);
}
public synchronized static void unRegisterBombable(T_Bombable b)
{
if (null == me || null == b )
return;
me.v.removeElement(b);
if( me.v.isEmpty())
{
me.armed = false;
me.t.interrupt();
me = null;
}
}
public void run() {
try {
Thread.sleep(delay);
}
catch (InterruptedException e) {
}
if (armed)
{
me.blowUp();
}
}
private void blowUp()
{
performLastGasp();
ContextService csf = getContextService();
if (csf != null)
{
System.out.println("ran out of time");
csf.notifyAllActiveThreads
((Context) null);
}
try {
Thread.currentThread().sleep(30*1000); //Give threads 30 sec to shut down.
}
catch (InterruptedException ie) {}
System.out.println("Exit due to time bomb");
Runtime.getRuntime().exit(1234);
}
private void performLastGasp()
{
for (T_Bombable b : v) {
try{
b.lastChance();
}
catch (Exception exc) {
System.out.println("Last Gasp exception");
exc.printStackTrace();
}
} //end for
}
/**
* Privileged lookup of the ContextService. Must be private so that user code
* can't call this entry point.
*/
private static ContextService getContextService()
{
if ( System.getSecurityManager() == null )
{
return ContextService.getFactory();
}
else
{
return AccessController.doPrivileged
(
new PrivilegedAction<ContextService>()
{
public ContextService run()
{
return ContextService.getFactory();
}
}
);
}
}
}
|
