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 /**
26 * @test
27 * @bug 8031320
28 * @summary Verify that RTMTotalCountIncrRate option affects
29 * RTM locking statistics.
30 * @library /test/lib /
31 * @modules java.base/jdk.internal.misc
32 * java.management
33 * @build sun.hotspot.WhiteBox
34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
35 * sun.hotspot.WhiteBox$WhiteBoxPermission
36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
37 * -XX:+WhiteBoxAPI
38 * compiler.rtm.locking.TestRTMTotalCountIncrRate
39 */
40
41 package compiler.rtm.locking;
42
43 import compiler.testlibrary.rtm.AbortProvoker;
44 import compiler.testlibrary.rtm.CompilableTest;
45 import compiler.testlibrary.rtm.RTMLockingStatistics;
46 import compiler.testlibrary.rtm.RTMTestBase;
47 import compiler.testlibrary.rtm.predicate.SupportedCPU;
48 import compiler.testlibrary.rtm.predicate.SupportedVM;
49 import jdk.internal.misc.Unsafe;
50 import jdk.test.lib.Asserts;
51 import jdk.test.lib.process.OutputAnalyzer;
52 import jdk.test.lib.cli.CommandLineOptionTest;
53 import jdk.test.lib.cli.predicate.AndPredicate;
54
55 import java.util.List;
56
57 /**
58 * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics
59 * contains precise information abort attempted locks and that with other values
60 * statistics contains information abort non-zero locking attempts.
61 * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses
62 * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on
63 * that issue see {@link TestUseRTMAfterLockInflation}.
64 */
65 public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
66 private TestRTMTotalCountIncrRate() {
67 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
68 }
69
70 @Override
71 protected void runTestCases() throws Throwable {
72 verifyLocksCount(1, false);
73 verifyLocksCount(64, false);
74 verifyLocksCount(128, false);
75 verifyLocksCount(1, true);
76 verifyLocksCount(64, true);
77 verifyLocksCount(128, true);
78 }
79
80 private void verifyLocksCount(int incrRate, boolean useStackLock)
81 throws Throwable{
82 CompilableTest test = new Test();
83
84 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
85 test,
86 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
87 useStackLock),
88 CommandLineOptionTest.prepareNumericFlag(
89 "RTMTotalCountIncrRate", incrRate),
90 "-XX:RTMRetryCount=0",
91 "-XX:+PrintPreciseRTMLockingStatistics",
92 Test.class.getName(),
93 Boolean.toString(!useStackLock)
94 );
95
96 outputAnalyzer.shouldHaveExitValue(0);
97
98 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
99 test.getMethodWithLockName(), outputAnalyzer.getOutput());
100
101 Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
102 + "exactly one RTM locking statistics entry for method "
103 + test.getMethodWithLockName());
104
105 RTMLockingStatistics lock = statistics.get(0);
106 if (incrRate == 1) {
107 Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS,
108 "Total locks should be exactly the same as amount of "
109 + "iterations.");
110 }
111 }
112
113 public static class Test implements CompilableTest {
114 private static final long TOTAL_ITERATIONS = 10000L;
115 private static final Unsafe UNSAFE = Unsafe.getUnsafe();
116 private final Object monitor = new Object();
117 // Following field have to be static in order to avoid escape analysis.
118 @SuppressWarnings("UnsuedDeclaration")
119 private static int field = 0;
120
121 @Override
122 public String getMethodWithLockName() {
123 return this.getClass().getName() + "::lock";
124 }
125
126 @Override
127 public String[] getMethodsToCompileNames() {
128 return new String[] { getMethodWithLockName() };
129 }
130
131 public void lock(boolean forceAbort) {
132 synchronized(monitor) {
133 if (forceAbort) {
134 // We're calling native method in order to force
135 // abort. It's done by explicit xabort call emitted
136 // in SharedRuntime::generate_native_wrapper.
137 // If an actual JNI call will be replaced by
138 // intrinsic - we'll be in trouble, since xabort
139 // will be no longer called and test may fail.
140 UNSAFE.addressSize();
141 }
142 Test.field++;
143 }
144 }
145
146 /**
147 * Usage:
148 * Test <inflate monitor>
149 */
150 public static void main(String args[]) throws Throwable {
151 Asserts.assertGTE(args.length, 1, "One argument required.");
152 Test test = new Test();
153 boolean shouldBeInflated = Boolean.valueOf(args[0]);
154 if (shouldBeInflated) {
155 AbortProvoker.inflateMonitor(test.monitor);
156 }
157 for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) {
158 AbortProvoker.verifyMonitorState(test.monitor,
159 shouldBeInflated);
160 // Force abort on first iteration to avoid rare case when
161 // there were no aborts and locks count was not incremented
162 // with RTMTotalCountIncrRate > 1 (in such case JVM won't
163 // print JVM locking statistics).
164 test.lock(i == 0);
165 }
166 }
167 }
168
169 public static void main(String args[]) throws Throwable {
170 new TestRTMTotalCountIncrRate().test();
171 }
172 }