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