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 /test/lib /
29 * @modules java.base/jdk.internal.misc
30 * java.management
31 * @build sun.hotspot.WhiteBox
32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
33 * sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
35 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing
36 * -XX:CompileCommand=compileonly,null::*
37 * -XX:-SegmentedCodeCache
38 * compiler.codecache.jmx.UsageThresholdIncreasedTest
39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
40 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing
41 * -XX:CompileCommand=compileonly,null::*
42 * -XX:+SegmentedCodeCache
43 * compiler.codecache.jmx.UsageThresholdIncreasedTest
44 */
45
46 package compiler.codecache.jmx;
47
48 import sun.hotspot.code.BlobType;
49
50 import java.lang.management.MemoryPoolMXBean;
51
52 public class UsageThresholdIncreasedTest {
53
54 private static final int ALLOCATION_STEP = 5;
55 private static final long THRESHOLD_STEP = ALLOCATION_STEP
56 * CodeCacheUtils.MIN_ALLOCATION;
57 private final BlobType btype;
58
59 public UsageThresholdIncreasedTest(BlobType btype) {
60 this.btype = btype;
61 }
62
63 public static void main(String[] args) {
64 for (BlobType btype : BlobType.getAvailable()) {
65 new UsageThresholdIncreasedTest(btype).runTest();
66 }
67 }
68
69 private void checkUsageThresholdCount(MemoryPoolMXBean bean, long count){
70 CodeCacheUtils.assertEQorGTE(btype, bean.getUsageThresholdCount(), count,
71 String.format("Usage threshold was hit: %d times for %s "
72 + "Threshold value: %d with current usage: %d",
73 bean.getUsageThresholdCount(), bean.getName(),
74 bean.getUsageThreshold(), bean.getUsage().getUsed()));
75 }
76
77 protected void runTest() {
78 long headerSize = CodeCacheUtils.getHeaderSize(btype);
79 long allocationUnit = Math.max(0, CodeCacheUtils.MIN_ALLOCATION - headerSize);
80 MemoryPoolMXBean bean = btype.getMemoryPool();
81 long initialCount = bean.getUsageThresholdCount();
82 long initialSize = bean.getUsage().getUsed();
83 bean.setUsageThreshold(initialSize + THRESHOLD_STEP);
84 for (int i = 0; i < ALLOCATION_STEP - 1; i++) {
85 CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id);
86 }
87 // Usage threshold check is triggered by GC cycle, so, call it
88 CodeCacheUtils.WB.fullGC();
89 checkUsageThresholdCount(bean, initialCount);
90 long filledSize = bean.getUsage().getUsed();
91 bean.setUsageThreshold(filledSize + THRESHOLD_STEP);
92 for (int i = 0; i < ALLOCATION_STEP - 1; i++) {
93 CodeCacheUtils.WB.allocateCodeBlob(allocationUnit, btype.id);
94 }
95 CodeCacheUtils.WB.fullGC();
96 checkUsageThresholdCount(bean, initialCount);
97 System.out.println("INFO: Case finished successfully for " + bean.getName());
98 }
99 }