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