UsageThresholdIncreasedTest.java revision 11707:ad7af1afda7a 
1/*
2 * Copyright (c) 2014, 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 UsageThresholdIncreasedTest
26 * @summary verifying that threshold hasn't been hit after allocation smaller
27 *     than threshold value and that threshold value can be changed
28 * @library /testlibrary /test/lib /
29 * @modules java.base/jdk.internal.misc
30 *          java.management
31 *
32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
33 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @build compiler.codecache.jmx.UsageThresholdIncreasedTest
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
36 *     -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing  -XX:-MethodFlushing
37 *     -XX:CompileCommand=compileonly,null::*
38 *     -XX:-SegmentedCodeCache
39 *     compiler.codecache.jmx.UsageThresholdIncreasedTest
40 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
41 *     -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing  -XX:-MethodFlushing
42 *     -XX:CompileCommand=compileonly,null::*
43 *     -XX:+SegmentedCodeCache
44 *     compiler.codecache.jmx.UsageThresholdIncreasedTest
45 */
46
47package compiler.codecache.jmx;
48
49import sun.hotspot.code.BlobType;
50
51import java.lang.management.MemoryPoolMXBean;
52
53public class UsageThresholdIncreasedTest {
54
55    private static final int ALLOCATION_STEP = 5;
56    private static final long THRESHOLD_STEP = ALLOCATION_STEP
57            * CodeCacheUtils.MIN_ALLOCATION;
58    private final BlobType btype;
59
60    public UsageThresholdIncreasedTest(BlobType btype) {
61        this.btype = btype;
62    }
63
64    public static void main(String[] args) {
65        for (BlobType btype : BlobType.getAvailable()) {
66            new UsageThresholdIncreasedTest(btype).runTest();
67        }
68    }
69
70    private void checkUsageThresholdCount(MemoryPoolMXBean bean, long count){
71        CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), count,
72                String.format("Usage threshold was hit: %d times for %s "
73                        + "Threshold value: %d with current usage: %d",
74                        bean.getUsageThresholdCount(), bean.getName(),
75                        bean.getUsageThreshold(), bean.getUsage().getUsed()));
76    }
77
78    protected void runTest() {
79        long headerSize = CodeCacheUtils.getHeaderSize(btype);
80        long allocationUnit = Math.max(0, CodeCacheUtils.MIN_ALLOCATION - headerSize);
81        MemoryPoolMXBean bean = btype.getMemoryPool();
82        long initialCount = bean.getUsageThresholdCount();
83        long initialSize = bean.getUsage().getUsed();
84        bean.setUsageThreshold(initialSize + THRESHOLD_STEP);
85        for (int i = 0; i < ALLOCATION_STEP - 1; i++) {
86            CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id);
87        }
88        // Usage threshold check is triggered by GC cycle, so, call it
89        CodeCacheUtils.WB.fullGC();
90        checkUsageThresholdCount(bean, initialCount);
91        long filledSize = bean.getUsage().getUsed();
92        bean.setUsageThreshold(filledSize + THRESHOLD_STEP);
93        for (int i = 0; i < ALLOCATION_STEP - 1; i++) {
94            CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id);
95        }
96        CodeCacheUtils.WB.fullGC();
97        checkUsageThresholdCount(bean, initialCount);
98        System.out.println("INFO: Case finished successfully for " + bean.getName());
99    }
100}
101