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