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comparison test/compiler/6724218/Test.java @ 247:02a35ad4adf8

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6723160: Nightly failure: Error: meet not symmetric Summary: Add missing _instance_id settings and other EA fixes. Reviewed-by: rasbold
author kvn
date Wed, 16 Jul 2008 16:04:39 -0700
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children c18cbe5936b8
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246:9b66e6287f4a 247:02a35ad4adf8
1 /*
2 * Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24 /*
25 * @test
26 * @bug 6724218
27 * @summary Fix raise_LCA_above_marks() early termination
28 * @run main/othervm -Xbatch -XX:CompileCommand=exclude,Test.update Test
29 */
30
31 public class Test {
32 Test next = null;
33 Object value = null;
34
35 static boolean _closed = false;
36 static int size = 0;
37 static Test list = null;
38 static int cache_size = 0;
39 static Test cache = null;
40
41 Object get(int i) {
42 Test t = list;
43 list = t.next;
44 size -= 1;
45 Object o = t.value;
46 if (i > 0) {
47 t.next = cache;
48 t.value = null;
49 cache = t;
50 cache_size = +1;
51 }
52 return o;
53 }
54
55 void update() {
56 // Exclude compilation of this one.
57 if (size == 0) {
58 Test t;
59 if (cache_size > 0) {
60 t = cache;
61 cache = t.next;
62 cache_size = -1;
63 } else {
64 t = new Test();
65 }
66 t.value = new Object();
67 t.next = list;
68 list = t;
69 size += 1;
70 }
71 }
72
73 synchronized Object test(int i) {
74 while (true) {
75 if (_closed) {
76 return null;
77 } else if (size > 0) {
78 return get(i);
79 }
80 update();
81 }
82 }
83
84 public static void main(String argv[]) throws Exception {
85 Test t = new Test();
86 int lim = 500000;
87 Object o;
88 for (int j = 0; j < lim; j++) {
89 o = t.test(j&1);
90 if (o == null) {
91 throw new Exception("*** Failed on iteration " + j);
92 }
93 if ((j&1) == 0) {
94 t.update();
95 }
96 }
97 }
98 }