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
|
/*
* Copyright (c) 2007, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package nsk.jvmti.ResourceExhausted;
import java.io.File;
import java.io.FileInputStream;
import java.io.PrintStream;
import java.security.ProtectionDomain;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import nsk.share.Consts;
import nsk.share.test.Stresser;
import jtreg.SkippedException;
public class resexhausted003 {
static final long MAX_ITERATIONS = Long.MAX_VALUE;
static class MyClassLoader extends ClassLoader {
Class<?> loadUm(String name, byte[] bytes, ProtectionDomain pd) throws ClassFormatError {
Class k = defineClass(name, bytes, 0, bytes.length, pd);
resolveClass(k);
return k;
}
Class loadClass(String name, byte[] bytes) {
try {
Class k = loadUm(name, bytes, getClass().getProtectionDomain());
k.newInstance(); // prepare class
return k;
} catch (Exception exc) {
throw new RuntimeException("Exception in loadClass: " + name, exc);
}
}
};
static class Node {
MyClassLoader loader = new MyClassLoader();
Node next;
};
static byte[] fileBytes(String fileName) {
try {
File f = new File(fileName);
FileInputStream fi = new FileInputStream(f);
byte[] bytes;
try {
bytes = new byte[(int) f.length()];
fi.read(bytes);
} finally {
fi.close();
}
return bytes;
} catch (Exception e) {
throw new RuntimeException("Exception when reading file '" + fileName + "'", e);
}
}
public static int run(String args[], PrintStream out) {
String testclasspath = System.getProperty("test.class.path");
String [] testpaths = testclasspath.split(System.getProperty("path.separator"));
String classesDir = "";
Pattern pattern = Pattern.compile("^(.*)classes(.*)vmTestbase(.*)$");
for (int i = 0 ; i < testpaths.length; i++) {
if (pattern.matcher(testpaths[i]).matches()) {
classesDir = testpaths[i];
}
}
if (classesDir.equals("")) {
System.err.println("TEST BUG: Classes directory not found in test,class.path.");
return Consts.TEST_FAILED;
}
Stresser stress = new Stresser(args);
String className = Helper.class.getName();
byte[] bloatBytes = fileBytes(classesDir + File.separator + className.replace('.', '/') + ".class");
int count = 0;
Helper.resetExhaustedEvent();
out.println("Loading classes...");
stress.start(MAX_ITERATIONS);
try {
Node list = null;
while ( stress.iteration() ) {
Node n = new Node();
n.next = list;
list = n;
n.loader.loadClass(className, bloatBytes);
++count;
}
System.out.println("Test resexhausted003: Can't reproduce OOME due to a limit on iterations/execution time. Test was useless.");
throw new SkippedException("Test did not get an OutOfMemory error");
} catch (OutOfMemoryError e) {
// that is what we are waiting for
} finally {
stress.finish();
}
System.gc();
if (!Helper.checkResult(Helper.JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR,
"loading " + count + " classes of " + bloatBytes.length + " bytes")) {
return Consts.TEST_FAILED;
}
return Consts.TEST_PASSED;
}
public static void main(String[] args) {
args = nsk.share.jvmti.JVMTITest.commonInit(args);
int result = run(args, System.out);
System.out.println(result == Consts.TEST_PASSED ? "TEST PASSED" : "TEST FAILED");
System.exit(result + Consts.JCK_STATUS_BASE);
}
}
|
