1 /*
2 * Copyright (c) 2018, 2018, 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 package org.graalvm.compiler.hotspot.lir.test;
26
27 import static org.graalvm.compiler.test.SubprocessUtil.getVMCommandLine;
28 import static org.graalvm.compiler.test.SubprocessUtil.withoutDebuggerArguments;
29
30 import java.util.ArrayList;
31 import java.util.Iterator;
32 import java.util.List;
33
34 import org.graalvm.compiler.api.directives.GraalDirectives;
35 import org.graalvm.compiler.core.common.LIRKind;
36 import org.graalvm.compiler.hotspot.HotSpotBackend;
37 import org.graalvm.compiler.hotspot.debug.BenchmarkCounters;
38 import org.graalvm.compiler.lir.ConstantValue;
39 import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
40 import org.graalvm.compiler.lir.jtt.LIRTest;
41 import org.graalvm.compiler.lir.jtt.LIRTestSpecification;
42 import org.graalvm.compiler.test.SubprocessUtil;
43 import org.junit.Assert;
44 import org.junit.Assume;
45 import org.junit.Before;
46 import org.junit.Test;
47
48 import jdk.vm.ci.amd64.AMD64;
49 import jdk.vm.ci.meta.JavaConstant;
50 import jdk.vm.ci.meta.JavaKind;
51 import jdk.vm.ci.meta.ResolvedJavaMethod;
52
53 public class BenchmarkCounterOverflowTest extends LIRTest {
54 private static final String SUBPROCESS_PROPERTY = BenchmarkCounterOverflowTest.class.getSimpleName() + ".subprocess.call";
55 private static final boolean VERBOSE = Boolean.getBoolean(BenchmarkCounterOverflowTest.class.getSimpleName() + ".verbose");
56
57 private static LIRKind intKind;
58
59 @Before
60 public void checkAMD64() {
61 Assume.assumeTrue("skipping AMD64 specific test", getTarget().arch instanceof AMD64);
62 Assume.assumeTrue("skipping HotSpot specific test", getBackend() instanceof HotSpotBackend);
63 }
64
65 @Before
66 public void setUp() {
67 intKind = LIRKind.fromJavaKind(getBackend().getTarget().arch, JavaKind.Long);
68 }
69
70 private static final LIRTestSpecification constCounterIncrement = new LIRTestSpecification() {
71 @Override
72 public void generate(LIRGeneratorTool gen) {
73 gen.append(gen.createBenchmarkCounter("counter", "test", new ConstantValue(intKind, JavaConstant.forLong(Integer.MAX_VALUE))));
74 }
75 };
76
77 @SuppressWarnings("unused")
78 @LIRIntrinsic
79 public static void counterInc(LIRTestSpecification spec) {
80 }
81
82 public static void test(long count) {
83 for (long i = 0; i < count; i++) {
84 counterInc(constCounterIncrement);
85 GraalDirectives.blackhole(i);
86 }
87 }
88
89 @Test
90 public void incrementCounter() {
91 Assume.assumeTrue("not a subprocess -> skip", Boolean.getBoolean(SUBPROCESS_PROPERTY));
92 BenchmarkCounters.enabled = true;
93
94 Object[] args = new Object[]{Integer.MAX_VALUE * 4L};
95 ResolvedJavaMethod method = getResolvedJavaMethod("test");
96 executeActualCheckDeopt(getInitialOptions(), method, EMPTY, null, args);
97 }
98
99 @Test
100 public void spawnSubprocess() throws Throwable {
101 Assume.assumeFalse("subprocess already spawned -> skip", Boolean.getBoolean(SUBPROCESS_PROPERTY));
102 List<String> vmArgs = withoutDebuggerArguments(getVMCommandLine());
103 vmArgs.add("-XX:JVMCICounterSize=1");
104 vmArgs.add("-Dgraal." + BenchmarkCounters.Options.AbortOnBenchmarkCounterOverflow.getName() + "=true");
105 vmArgs.add("-D" + SUBPROCESS_PROPERTY + "=true");
106
107 // Disable increment range checks (e.g. HotSpotCounterOp.checkIncrements())
108 vmArgs.add("-dsa");
109 vmArgs.add("-da");
110
111 List<String> mainClassAndArgs = new ArrayList<>();
112 mainClassAndArgs.add("com.oracle.mxtool.junit.MxJUnitWrapper");
113 mainClassAndArgs.add(BenchmarkCounterOverflowTest.class.getName());
114
115 SubprocessUtil.Subprocess proc = SubprocessUtil.java(vmArgs, mainClassAndArgs);
116
117 if (VERBOSE) {
118 System.out.println(proc);
119 }
120
121 Assert.assertNotEquals("Expected non-zero exit status", 0, proc.exitCode);
122
123 Iterator<String> it = proc.output.iterator();
124 while (it.hasNext()) {
125 String line = it.next();
126 if (line.contains("Problematic frame:")) {
127 if (!it.hasNext()) {
128 // no more line
129 break;
130 }
131 line = it.next();
132 if (line.contains(BenchmarkCounterOverflowTest.class.getName() + ".test")) {
133 return;
134 }
135 Assert.fail("Unexpected stack trace: " + line);
136 }
137 }
138 Assert.fail(String.format("Could not find method in output:%n%s", proc));
139 }
140 }