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