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 * @build BlockingCompilation
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 * -XX:TieredCompileTaskTimeout=60000
41 * BlockingCompilation
42 */
43
44 import java.lang.reflect.Method;
45 import java.util.Random;
46
47 import sun.hotspot.WhiteBox;
48 import compiler.testlibrary.CompilerUtils;
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: \"BlockingCompilation.foo\", BackgroundCompilation: false }]";
100 if (WB.addCompilerDirective(directive) != 1) {
101 throw new Exception("Failed to add compiler directive");
102 }
103
104 try {
105 for (int l : levels) {
106 // Make uncompiled
107 WB.deoptimizeMethod(m);
108
109 // Verify that it's not compiled
110 if (WB.isMethodCompiled(m)) {
111 throw new Exception("Should not be compiled after deoptimization");
112 }
113 if (WB.isMethodQueuedForCompilation(m)) {
114 throw new Exception("Should not be enqueued on any level");
115 }
116
117 // Add to queue and verify that it went well
118 if (!WB.enqueueMethodForCompilation(m, l)) {
119 throw new Exception("Could not be enqueued for compilation");
120 }
121
122 // Verify that it is compiled
123 if (!WB.isMethodCompiled(m)) {
124 throw new Exception("Must be compiled here");
125 }
126 // And verify the level
127 if (WB.getMethodCompilationLevel(m) != l) {
128 String msg = m + " should be compiled at level " + l +
129 "(but is actually compiled at level " +
130 WB.getMethodCompilationLevel(m) + ")";
131 System.out.println("==> " + msg);
132 throw new Exception(msg);
133 }
134 }
135 } finally {
136 WB.removeCompilerDirective(1);
137 }
138
139 // Clean up
140 WB.deoptimizeMethod(m);
141 WB.clearMethodState(m);
142
143 // Make sure no compilations can progress, blocking compiles will hang
144 WB.lockCompilation();
145
146 // Verify method state before test
147 if (WB.isMethodCompiled(m)) {
148 throw new Exception("Should not be compiled after deoptimization");
149 }
150 if (WB.isMethodQueuedForCompilation(m)) {
151 throw new Exception("Should not be enqueued on any level");
152 }
153
154 // Try compiling on highest available comp level.
155 // If the compiles are blocking, this call will block until the test time out,
156 // Progress == success
157 // (Don't run with -Xcomp since that can cause long timeouts due to many compiles)
158 WB.enqueueMethodForCompilation(m, highest_level);
159
160 // restore state
161 WB.unlockCompilation();
162 }
163 }