1 /*
2 * Copyright (c) 2011, 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test TestFullGCCount.java
26 * @bug 7072527
27 * @summary CMS: JMM GC counters overcount in some cases
28 * @requires !(vm.gc.ConcMarkSweep & vm.opt.ExplicitGCInvokesConcurrent == true)
29 * @modules java.management
30 * @run main/othervm -Xlog:gc TestFullGCCount
31 */
32
33 import java.lang.management.GarbageCollectorMXBean;
34 import java.lang.management.ManagementFactory;
35 import java.util.ArrayList;
36 import java.util.HashMap;
37 import java.util.List;
38
39 /*
40 * Originally for a specific failure in CMS, this test now monitors all
41 * collectors for double-counting of collections.
42 */
43 public class TestFullGCCount {
44
45 static List<GarbageCollectorMXBean> collectors = ManagementFactory.getGarbageCollectorMXBeans();
46
47 public static void main(String[] args) {
48 int iterations = 20;
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1 /*
2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test TestFullGCCount.java
26 * @bug 7072527
27 * @summary CMS: JMM GC counters overcount in some cases
28 * @requires !(vm.gc.ConcMarkSweep & vm.opt.ExplicitGCInvokesConcurrent == true)
29 * @requires !(vm.gc == "Shenandoah" & !(vm.opt.ExplicitGCInvokesConcurrent == false))
30 * @modules java.management
31 * @run main/othervm -Xlog:gc TestFullGCCount
32 */
33
34 import java.lang.management.GarbageCollectorMXBean;
35 import java.lang.management.ManagementFactory;
36 import java.util.ArrayList;
37 import java.util.HashMap;
38 import java.util.List;
39
40 /*
41 * Originally for a specific failure in CMS, this test now monitors all
42 * collectors for double-counting of collections.
43 */
44 public class TestFullGCCount {
45
46 static List<GarbageCollectorMXBean> collectors = ManagementFactory.getGarbageCollectorMXBeans();
47
48 public static void main(String[] args) {
49 int iterations = 20;
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