1 /*
2 * Copyright (c) 2016 SAP SE. 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 * @test
26 * @bug 8150646 8153013
27 * @summary Add support for blocking compiles through whitebox API
28 * @modules java.base/jdk.internal.misc
29 * @library /test/lib /
30 * @build sun.hotspot.WhiteBox
31 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
32 * sun.hotspot.WhiteBox$WhiteBoxPermission
33 * @run main/othervm
34 * -Xbootclasspath/a:.
35 * -Xmixed
36 * -XX:+UnlockDiagnosticVMOptions
37 * -XX:+WhiteBoxAPI
38 * -XX:+PrintCompilation
39 * compiler.whitebox.BlockingCompilation
40 */
41
42 package compiler.whitebox;
43
44 import compiler.testlibrary.CompilerUtils;
45 import sun.hotspot.WhiteBox;
46
47 import java.lang.reflect.Method;
48 import java.util.Random;
49
50 public class BlockingCompilation {
51 private static final WhiteBox WB = WhiteBox.getWhiteBox();
52 private static final Random RANDOM = new Random();
53
54 public static int foo() {
55 return RANDOM.nextInt();
56 }
57
58 public static void main(String[] args) throws Exception {
59 Method m = BlockingCompilation.class.getMethod("foo");
60 int[] levels = CompilerUtils.getAvailableCompilationLevels();
61 int highest_level = levels[levels.length-1];
62
63 // If there are no compilers available these tests don't make any sense.
64 if (levels.length == 0) return;
65
66 // Make sure no compilations can progress, blocking compiles will hang
67 WB.lockCompilation();
68
69 // Verify method state before test
70 if (WB.isMethodCompiled(m)) {
71 throw new Exception("Should not be compiled after deoptimization");
72 }
73 if (WB.isMethodQueuedForCompilation(m)) {
74 throw new Exception("Should not be enqueued on any level");
75 }
76
77 // Try compiling on highest available comp level.
78 // If the compiles are blocking, this call will block until the test time out,
79 // Progress == success
80 // (Don't run with -Xcomp since that can cause long timeouts due to many compiles)
81 if (!WB.enqueueMethodForCompilation(m, highest_level)) {
82 throw new Exception("Failed to enqueue method on level: " + highest_level);
83 }
84
85 if (!WB.isMethodQueuedForCompilation(m)) {
86 throw new Exception("Must be enqueued because of locked compilation");
87 }
88
89 // restore state
90 WB.unlockCompilation();
91 while (!WB.isMethodCompiled(m)) {
92 Thread.sleep(100);
93 }
94 WB.deoptimizeMethod(m);
95 WB.clearMethodState(m);
96
97 // Blocking compilations on all levels, using the default versions of
98 // WB.enqueueMethodForCompilation() and manually setting compiler directives.
99 String directive = "[{ match: \""
100 + BlockingCompilation.class.getName().replace('.', '/')
101 + ".foo\", BackgroundCompilation: false }]";
102 if (WB.addCompilerDirective(directive) != 1) {
103 throw new Exception("Failed to add compiler directive");
104 }
105
106 try {
107 for (int l : levels) {
108 // Make uncompiled
109 WB.deoptimizeMethod(m);
110
111 // Verify that it's not compiled
112 if (WB.isMethodCompiled(m)) {
113 throw new Exception("Should not be compiled after deoptimization");
114 }
115 if (WB.isMethodQueuedForCompilation(m)) {
116 throw new Exception("Should not be enqueued on any level");
117 }
118
119 // Add to queue and verify that it went well
120 if (!WB.enqueueMethodForCompilation(m, l)) {
121 throw new Exception("Could not be enqueued for compilation");
122 }
123
124 // Verify that it is compiled
125 if (!WB.isMethodCompiled(m)) {
126 throw new Exception("Must be compiled here");
127 }
128 // And verify the level
129 if (WB.getMethodCompilationLevel(m) != l) {
130 String msg = m + " should be compiled at level " + l +
131 "(but is actually compiled at level " +
132 WB.getMethodCompilationLevel(m) + ")";
133 System.out.println("==> " + msg);
134 throw new Exception(msg);
135 }
136 }
137 } finally {
138 WB.removeCompilerDirective(1);
139 }
140
141 // Clean up
142 WB.deoptimizeMethod(m);
143 WB.clearMethodState(m);
144
145 // Make sure no compilations can progress, blocking compiles will hang
146 WB.lockCompilation();
147
148 // Verify method state before test
149 if (WB.isMethodCompiled(m)) {
150 throw new Exception("Should not be compiled after deoptimization");
151 }
152 if (WB.isMethodQueuedForCompilation(m)) {
153 throw new Exception("Should not be enqueued on any level");
154 }
155
156 // Try compiling on highest available comp level.
157 // If the compiles are blocking, this call will block until the test time out,
158 // Progress == success
159 // (Don't run with -Xcomp since that can cause long timeouts due to many compiles)
160 WB.enqueueMethodForCompilation(m, highest_level);
161
162 // restore state
163 WB.unlockCompilation();
164 }
165 }