1 /*
2 * Copyright (c) 2014, 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 /testlibrary /testlibrary/whitebox /compiler/testlibrary
31 * @build TestRTMTotalCountIncrRate
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 * sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
35 * -XX:+WhiteBoxAPI TestRTMTotalCountIncrRate
36 */
37
38 import java.util.List;
39
40 import com.oracle.java.testlibrary.*;
41 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
42 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
43 import rtm.*;
44 import rtm.predicate.SupportedCPU;
45 import rtm.predicate.SupportedVM;
46
47 /**
48 * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics
49 * contains precise information abort attempted locks and that with other values
50 * statistics contains information abort non-zero locking attempts.
51 * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses
52 * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on
53 * that issue see {@link TestUseRTMAfterLockInflation}.
54 */
55 public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
56 private TestRTMTotalCountIncrRate() {
57 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
58 }
59
60 @Override
61 protected void runTestCases() throws Throwable {
62 verifyLocksCount(1, false);
63 verifyLocksCount(64, false);
64 verifyLocksCount(128, false);
65 verifyLocksCount(1, true);
66 verifyLocksCount(64, true);
67 verifyLocksCount(128, true);
68 }
69
70 private void verifyLocksCount(int incrRate, boolean useStackLock)
71 throws Throwable{
72 CompilableTest test = new Test();
73
74 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
75 test,
76 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
77 useStackLock),
78 CommandLineOptionTest.prepareNumericFlag(
79 "RTMTotalCountIncrRate", incrRate),
80 "-XX:RTMRetryCount=0",
81 "-XX:+PrintPreciseRTMLockingStatistics",
82 Test.class.getName(),
83 Boolean.toString(!useStackLock)
84 );
85
86 outputAnalyzer.shouldHaveExitValue(0);
87
88 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
89 test.getMethodWithLockName(), outputAnalyzer.getOutput());
90
91 Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
92 + "exactly one RTM locking statistics entry for method "
93 + test.getMethodWithLockName());
94
95 RTMLockingStatistics lock = statistics.get(0);
96 if (incrRate == 1) {
97 Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS,
98 "Total locks should be exactly the same as amount of "
99 + "iterations.");
100 } else {
101 Asserts.assertGT(lock.getTotalLocks(), 0L, "RTM statistics "
102 + "should contain information for at least on lock.");
103 }
104 }
105
106 public static class Test implements CompilableTest {
107 private static final long TOTAL_ITERATIONS = 10000L;
108 private final Object monitor = new Object();
109 // Following field have to be static in order to avoid escape analysis.
110 @SuppressWarnings("UnsuedDeclaration")
111 private static int field = 0;
112
113 @Override
114 public String getMethodWithLockName() {
115 return this.getClass().getName() + "::lock";
116 }
117
118 @Override
119 public String[] getMethodsToCompileNames() {
120 return new String[] {
121 getMethodWithLockName()
122 };
123 }
124
125 public void lock() {
126 synchronized(monitor) {
127 Test.field++;
128 }
129 }
130
131 /**
132 * Usage:
133 * Test <inflate monitor>
134 */
135 public static void main(String args[]) throws Throwable {
136 Asserts.assertGTE(args.length, 1, "One argument required.");
137 Test test = new Test();
138
139 if (Boolean.valueOf(args[0])) {
140 AbortProvoker.inflateMonitor(test.monitor);
141 }
142 for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) {
143 test.lock();
144 }
145 }
146 }
147
148 public static void main(String args[]) throws Throwable {
149 new TestRTMTotalCountIncrRate().test();
150 }
151 }