Mercurial > hg > truffle
comparison test/compiler/rtm/locking/TestRTMLockingThreshold.java @ 18058:54bc75c144b0
Merge
author | asaha |
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date | Thu, 29 May 2014 13:14:25 -0700 |
parents | ba8268c23fa2 |
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18055:1fa005fb28f5 | 18058:54bc75c144b0 |
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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 RTMLockingThreshold affects rtm state transition | |
29 * ProfileRTM => UseRTM. | |
30 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary | |
31 * @build TestRTMLockingThreshold | |
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox | |
33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions | |
34 * -XX:+WhiteBoxAPI TestRTMLockingThreshold | |
35 */ | |
36 | |
37 import java.util.List; | |
38 import com.oracle.java.testlibrary.*; | |
39 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; | |
40 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; | |
41 import rtm.*; | |
42 import rtm.predicate.SupportedCPU; | |
43 import rtm.predicate.SupportedVM; | |
44 import sun.misc.Unsafe; | |
45 | |
46 /** | |
47 * Test verifies that RTMLockingThreshold option actually affects how soon | |
48 * method will be deoptimized on low abort ratio. | |
49 */ | |
50 public class TestRTMLockingThreshold extends CommandLineOptionTest { | |
51 private TestRTMLockingThreshold() { | |
52 super(new AndPredicate(new SupportedVM(), new SupportedCPU())); | |
53 } | |
54 | |
55 /** | |
56 * We use non-zero abort threshold to avoid abort related to | |
57 * interrupts, VMM calls, etc. during first lock attempt. | |
58 * | |
59 */ | |
60 private static final int ABORT_THRESHOLD = 10; | |
61 | |
62 @Override | |
63 protected void runTestCases() throws Throwable { | |
64 verifyLockingThreshold(0, false); | |
65 verifyLockingThreshold(100, false); | |
66 verifyLockingThreshold(1000, false); | |
67 | |
68 verifyLockingThreshold(0, true); | |
69 verifyLockingThreshold(100, true); | |
70 verifyLockingThreshold(1000, true); | |
71 } | |
72 | |
73 private void verifyLockingThreshold(int lockingThreshold, | |
74 boolean useStackLock) throws Throwable { | |
75 CompilableTest test = new Test(); | |
76 | |
77 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( | |
78 test, | |
79 "-XX:CompileThreshold=1", | |
80 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", | |
81 useStackLock), | |
82 "-XX:+UseRTMDeopt", | |
83 "-XX:RTMTotalCountIncrRate=1", | |
84 "-XX:RTMRetryCount=0", | |
85 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", | |
86 TestRTMLockingThreshold.ABORT_THRESHOLD), | |
87 CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold", | |
88 lockingThreshold), | |
89 "-XX:RTMAbortRatio=100", | |
90 "-XX:+PrintPreciseRTMLockingStatistics", | |
91 Test.class.getName(), | |
92 Boolean.toString(!useStackLock), | |
93 Integer.toString(lockingThreshold) | |
94 ); | |
95 | |
96 outputAnalyzer.shouldHaveExitValue(0); | |
97 | |
98 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( | |
99 test.getMethodWithLockName(), outputAnalyzer.getOutput()); | |
100 | |
101 Asserts.assertEQ(statistics.size(), 2, "VM output should contain two " | |
102 + "RTM locking statistics entries."); | |
103 | |
104 /** | |
105 * We force abort on each odd iteration, so if RTMLockingThreshold==0, | |
106 * then we have to make 1 call without abort to avoid rtm state | |
107 * transition to NoRTM (otherwise actual abort ratio will be 100%), | |
108 * and after that make 1 call with abort to force deoptimization. | |
109 * This leads us to two locks for threshold 0. | |
110 * For other threshold values we have to make RTMLockingThreshold + 1 | |
111 * locks if locking threshold is even, or + 0 if odd. | |
112 */ | |
113 long expectedValue = lockingThreshold + | |
114 (lockingThreshold == 0L ? 2L : lockingThreshold % 2L); | |
115 | |
116 RTMLockingStatistics statBeforeDeopt = null; | |
117 for (RTMLockingStatistics s : statistics) { | |
118 if (s.getTotalLocks() == expectedValue) { | |
119 Asserts.assertNull(statBeforeDeopt, | |
120 "Only one statistics entry should contain aborts"); | |
121 statBeforeDeopt = s; | |
122 } | |
123 } | |
124 | |
125 Asserts.assertNotNull(statBeforeDeopt, "There should be exactly one " | |
126 + "statistics entry corresponding to ProfileRTM state."); | |
127 } | |
128 | |
129 public static class Test implements CompilableTest { | |
130 // Following field have to be static in order to avoid escape analysis. | |
131 @SuppressWarnings("UnsuedDeclaration") | |
132 private static int field = 0; | |
133 private static final int TOTAL_ITERATIONS = 10000; | |
134 private static final Unsafe UNSAFE = Utils.getUnsafe(); | |
135 private final Object monitor = new Object(); | |
136 | |
137 | |
138 @Override | |
139 public String getMethodWithLockName() { | |
140 return this.getClass().getName() + "::lock"; | |
141 } | |
142 | |
143 @Override | |
144 public String[] getMethodsToCompileNames() { | |
145 return new String[] { | |
146 getMethodWithLockName(), | |
147 sun.misc.Unsafe.class.getName() + "::addressSize" | |
148 }; | |
149 } | |
150 | |
151 public void lock(boolean abort) { | |
152 synchronized(monitor) { | |
153 if (abort) { | |
154 Test.field += Test.UNSAFE.addressSize(); | |
155 } | |
156 } | |
157 } | |
158 | |
159 /** | |
160 * Usage: | |
161 * Test <inflate monitor> | |
162 */ | |
163 public static void main(String args[]) throws Throwable { | |
164 Asserts.assertGTE(args.length, 1, "One argument required."); | |
165 Test t = new Test(); | |
166 | |
167 if (Boolean.valueOf(args[0])) { | |
168 AbortProvoker.inflateMonitor(t.monitor); | |
169 } | |
170 for (int i = 0; i < Test.TOTAL_ITERATIONS; i++) { | |
171 t.lock(i % 2 == 1); | |
172 } | |
173 } | |
174 } | |
175 | |
176 public static void main(String args[]) throws Throwable { | |
177 new TestRTMLockingThreshold().test(); | |
178 } | |
179 } |