1 /*
2 * Copyright (c) 2014, 2015, 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.
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23 */
24
25 /**
26 * @test
27 * @bug 8031320
28 * @summary Verify that RTMTotalCountIncrRate option affects
29 * RTM locking statistics.
30 * @library /testlibrary /../../test/lib /compiler/testlibrary
31 * @modules java.base/sun.misc
32 * java.management
33 * @build TestRTMTotalCountIncrRate
34 * @run main ClassFileInstaller sun.hotspot.WhiteBox
35 * sun.hotspot.WhiteBox$WhiteBoxPermission
36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
37 * -XX:+WhiteBoxAPI TestRTMTotalCountIncrRate
38 */
39
40 import sun.misc.Unsafe;
41 import java.util.List;
42
43 import jdk.test.lib.*;
44 import jdk.test.lib.cli.CommandLineOptionTest;
45 import jdk.test.lib.cli.predicate.AndPredicate;
46 import rtm.*;
47 import rtm.predicate.SupportedCPU;
48 import rtm.predicate.SupportedVM;
49
50 /**
51 * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics
52 * contains precise information abort attempted locks and that with other values
53 * statistics contains information abort non-zero locking attempts.
54 * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses
55 * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on
56 * that issue see {@link TestUseRTMAfterLockInflation}.
57 */
58 public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
59 private TestRTMTotalCountIncrRate() {
60 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
61 }
62
63 @Override
64 protected void runTestCases() throws Throwable {
65 verifyLocksCount(1, false);
66 verifyLocksCount(64, false);
67 verifyLocksCount(128, false);
68 verifyLocksCount(1, true);
69 verifyLocksCount(64, true);
70 verifyLocksCount(128, true);
71 }
72
73 private void verifyLocksCount(int incrRate, boolean useStackLock)
74 throws Throwable{
75 CompilableTest test = new Test();
76
77 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
78 test,
79 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
80 useStackLock),
81 CommandLineOptionTest.prepareNumericFlag(
82 "RTMTotalCountIncrRate", incrRate),
83 "-XX:RTMRetryCount=0",
84 "-XX:+PrintPreciseRTMLockingStatistics",
85 Test.class.getName(),
86 Boolean.toString(!useStackLock)
87 );
88
89 outputAnalyzer.shouldHaveExitValue(0);
90
91 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
92 test.getMethodWithLockName(), outputAnalyzer.getOutput());
93
94 Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
95 + "exactly one RTM locking statistics entry for method "
96 + test.getMethodWithLockName());
97
98 RTMLockingStatistics lock = statistics.get(0);
99 if (incrRate == 1) {
100 Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS,
101 "Total locks should be exactly the same as amount of "
102 + "iterations.");
103 }
104 }
105
106 public static class Test implements CompilableTest {
107 private static final long TOTAL_ITERATIONS = 10000L;
108 private static final Unsafe UNSAFE = Utils.getUnsafe();
109 private final Object monitor = new Object();
110 // Following field have to be static in order to avoid escape analysis.
111 @SuppressWarnings("UnsuedDeclaration")
112 private static int field = 0;
113
114 @Override
115 public String getMethodWithLockName() {
116 return this.getClass().getName() + "::lock";
117 }
118
119 @Override
120 public String[] getMethodsToCompileNames() {
121 return new String[] { getMethodWithLockName() };
122 }
123
124 public void lock(boolean forceAbort) {
125 synchronized(monitor) {
126 if (forceAbort) {
127 // We're calling native method in order to force
128 // abort. It's done by explicit xabort call emitted
129 // in SharedRuntime::generate_native_wrapper.
130 // If an actual JNI call will be replaced by
131 // intrinsic - we'll be in trouble, since xabort
132 // will be no longer called and test may fail.
133 UNSAFE.addressSize();
134 }
135 Test.field++;
136 }
137 }
138
139 /**
140 * Usage:
141 * Test <inflate monitor>
142 */
143 public static void main(String args[]) throws Throwable {
144 Asserts.assertGTE(args.length, 1, "One argument required.");
145 Test test = new Test();
146 boolean shouldBeInflated = Boolean.valueOf(args[0]);
147 if (shouldBeInflated) {
148 AbortProvoker.inflateMonitor(test.monitor);
149 }
150 for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) {
151 AbortProvoker.verifyMonitorState(test.monitor,
152 shouldBeInflated);
153 // Force abort on first iteration to avoid rare case when
154 // there were no aborts and locks count was not incremented
155 // with RTMTotalCountIncrRate > 1 (in such case JVM won't
156 // print JVM locking statistics).
157 test.lock(i == 0);
158 }
159 }
160 }
161
162 public static void main(String args[]) throws Throwable {
163 new TestRTMTotalCountIncrRate().test();
164 }
165 }