1 /*
2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. 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 package sun.hotspot.tools.ctw;
25
26 import sun.hotspot.WhiteBox;
27 import jdk.internal.misc.SharedSecrets;
28 import jdk.internal.reflect.ConstantPool;
29 import java.lang.reflect.Executable;
30
31 import java.util.Objects;
32 import java.util.concurrent.Executor;
33 import java.util.concurrent.atomic.AtomicLong;
34
35 /**
36 * Provide method to compile whole class.
37 * Also contains compiled methods and classes counters.
38 */
39 public class Compiler {
40
41 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
42 private static final AtomicLong METHOD_COUNT = new AtomicLong(0L);
43
44 private Compiler() { }
45
46 /**
47 * @return count of processed methods
48 */
49 public static long getMethodCount() {
50 return METHOD_COUNT.get();
51 }
52
53 /**
54 * Compiles all methods and constructors.
55 *
56 * @param aClass class to compile
57 * @param id an id of the class
58 * @param executor executor used for compile task invocation
59 * @throws NullPointerException if {@code class} or {@code executor}
60 * is {@code null}
61 */
62 public static void compileClass(Class<?> aClass, long id, Executor executor) {
63 Objects.requireNonNull(aClass);
64 Objects.requireNonNull(executor);
65 try {
66 ConstantPool constantPool = SharedSecrets.getJavaLangAccess().
67 getConstantPool(aClass);
68 if (Utils.COMPILE_THE_WORLD_PRELOAD_CLASSES) {
69 preloadClasses(aClass.getName(), id, constantPool);
70 }
71 long methodCount = 0;
72 for (Executable e : aClass.getDeclaredConstructors()) {
73 ++methodCount;
74 executor.execute(new CompileMethodCommand(id, e));
75 }
76 for (Executable e : aClass.getDeclaredMethods()) {
77 ++methodCount;
78 executor.execute(new CompileMethodCommand(id, e));
79 }
80 METHOD_COUNT.addAndGet(methodCount);
81
82 if (Utils.DEOPTIMIZE_ALL_CLASSES_RATE > 0
83 && (id % Utils.DEOPTIMIZE_ALL_CLASSES_RATE == 0)) {
84 WHITE_BOX.deoptimizeAll();
85 }
86 } catch (Throwable t) {
87 CompileTheWorld.OUT.printf("[%d]\t%s\tskipping %s%n", id, aClass.getName(), t);
88 t.printStackTrace();
89 }
90 }
91
92 private static void preloadClasses(String className, long id,
93 ConstantPool constantPool) {
94 try {
95 for (int i = 0, n = constantPool.getSize(); i < n; ++i) {
96 try {
97 constantPool.getClassAt(i);
98 } catch (IllegalArgumentException ignore) {
99 }
100 }
101 } catch (Throwable t) {
102 CompileTheWorld.OUT.printf("[%d]\t%s\tpreloading failed : %s%n",
103 id, className, t);
104 }
105 }
106
107
108
109 /**
110 * Compilation of method.
111 * Will compile method on all available comp levels.
112 */
113 private static class CompileMethodCommand implements Runnable {
114 private final long classId;
115 private final String className;
116 private final Executable method;
117
118 /**
119 * @param classId id of class
120 * @param method compiled for compilation
121 */
122 public CompileMethodCommand(long classId, Executable method) {
123 this.classId = classId;
124 this.className = method.getDeclaringClass().getName();
125 this.method = method;
126 }
127
128 @Override
129 public final void run() {
130 int compLevel = Utils.INITIAL_COMP_LEVEL;
131 if (Utils.TIERED_COMPILATION) {
132 for (int i = compLevel; i <= Utils.TIERED_STOP_AT_LEVEL; ++i) {
133 WHITE_BOX.deoptimizeMethod(method);
134 compileAtLevel(i);
135 }
136 } else {
137 compileAtLevel(compLevel);
138 }
139 }
140
141 private void waitCompilation() {
142 if (!Utils.BACKGROUND_COMPILATION) {
143 return;
144 }
145 final Object obj = new Object();
146 synchronized (obj) {
147 for (int i = 0;
148 i < 10 && WHITE_BOX.isMethodQueuedForCompilation(method);
149 ++i) {
150 try {
151 obj.wait(1000);
152 } catch (InterruptedException e) {
153 Thread.currentThread().interrupt();
154 }
155 }
156 }
157 }
158
159 private void compileAtLevel(int compLevel) {
160 if (WHITE_BOX.isMethodCompilable(method, compLevel)) {
161 try {
162 WHITE_BOX.enqueueMethodForCompilation(method, compLevel);
163 waitCompilation();
164 int tmp = WHITE_BOX.getMethodCompilationLevel(method);
165 if (tmp != compLevel) {
166 log("compilation level = " + tmp
167 + ", but not " + compLevel);
168 } else if (Utils.IS_VERBOSE) {
169 log("compilation level = " + tmp + ". OK");
170 }
171 } catch (Throwable t) {
172 log("error on compile at " + compLevel
173 + " level");
174 t.printStackTrace();
175 }
176 } else if (Utils.IS_VERBOSE) {
177 log("not compilable at " + compLevel);
178 }
179 }
180
181 private void log(String message) {
182 StringBuilder builder = new StringBuilder("[");
183 builder.append(classId);
184 builder.append("]\t");
185 builder.append(className);
186 builder.append("::");
187 builder.append(method.getName());
188 builder.append('(');
189 Class[] params = method.getParameterTypes();
190 for (int i = 0, n = params.length - 1; i < n; ++i) {
191 builder.append(params[i].getName());
192 builder.append(", ");
193 }
194 if (params.length != 0) {
195 builder.append(params[params.length - 1].getName());
196 }
197 builder.append(')');
198 if (message != null) {
199 builder.append('\t');
200 builder.append(message);
201 }
202 CompileTheWorld.ERR.println(builder);
203 }
204 }
205
206 }