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.
22 *
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 * @build com.oracle.java.testlibrary.* 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 sun.misc.Unsafe;
39 import java.util.List;
40
41 import com.oracle.java.testlibrary.*;
42 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
43 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
44 import rtm.*;
45 import rtm.predicate.SupportedCPU;
46 import rtm.predicate.SupportedVM;
47
48 /**
49 * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics
50 * contains precise information abort attempted locks and that with other values
51 * statistics contains information abort non-zero locking attempts.
52 * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses
53 * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on
54 * that issue see {@link TestUseRTMAfterLockInflation}.
55 */
56 public class TestRTMTotalCountIncrRate extends CommandLineOptionTest {
57 private TestRTMTotalCountIncrRate() {
58 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
59 }
60
61 @Override
62 protected void runTestCases() throws Throwable {
63 verifyLocksCount(1, false);
64 verifyLocksCount(64, false);
65 verifyLocksCount(128, false);
66 verifyLocksCount(1, true);
67 verifyLocksCount(64, true);
68 verifyLocksCount(128, true);
69 }
70
71 private void verifyLocksCount(int incrRate, boolean useStackLock)
72 throws Throwable{
73 CompilableTest test = new Test();
74
75 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
76 test,
77 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
78 useStackLock),
79 CommandLineOptionTest.prepareNumericFlag(
80 "RTMTotalCountIncrRate", incrRate),
81 "-XX:RTMRetryCount=0",
82 "-XX:+PrintPreciseRTMLockingStatistics",
83 Test.class.getName(),
84 Boolean.toString(!useStackLock)
85 );
86
87 outputAnalyzer.shouldHaveExitValue(0);
88
89 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
90 test.getMethodWithLockName(), outputAnalyzer.getOutput());
91
92 Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
93 + "exactly one RTM locking statistics entry for method "
94 + test.getMethodWithLockName());
95
96 RTMLockingStatistics lock = statistics.get(0);
97 if (incrRate == 1) {
98 Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS,
99 "Total locks should be exactly the same as amount of "
100 + "iterations.");
101 }
102 }
103
104 public static class Test implements CompilableTest {
105 private static final long TOTAL_ITERATIONS = 10000L;
106 private static final Unsafe UNSAFE = Utils.getUnsafe();
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[] { getMethodWithLockName() };
120 }
121
122 public void lock(boolean forceAbort) {
123 synchronized(monitor) {
124 if (forceAbort) {
125 // We're calling native method in order to force
126 // abort. It's done by explicit xabort call emitted
127 // in SharedRuntime::generate_native_wrapper.
128 // If an actual JNI call will be replaced by
129 // intrinsic - we'll be in trouble, since xabort
130 // will be no longer called and test may fail.
131 UNSAFE.addressSize();
132 }
133 Test.field++;
134 }
135 }
136
137 /**
138 * Usage:
139 * Test <inflate monitor>
140 */
141 public static void main(String args[]) throws Throwable {
142 Asserts.assertGTE(args.length, 1, "One argument required.");
143 Test test = new Test();
144 boolean shouldBeInflated = Boolean.valueOf(args[0]);
145 if (shouldBeInflated) {
146 AbortProvoker.inflateMonitor(test.monitor);
147 }
148 for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) {
149 AbortProvoker.verifyMonitorState(test.monitor,
150 shouldBeInflated);
151 // Force abort on first iteration to avoid rare case when
152 // there were no aborts and locks count was not incremented
153 // with RTMTotalCountIncrRate > 1 (in such case JVM won't
154 // print JVM locking statistics).
155 test.lock(i == 0);
156 }
157 }
158 }
159
160 public static void main(String args[]) throws Throwable {
161 new TestRTMTotalCountIncrRate().test();
162 }
163 }