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9108
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot;
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24
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25 import java.io.File;
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26 import java.lang.reflect.Constructor;
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27 import java.lang.reflect.Method;
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28 import java.lang.reflect.Modifier;
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29 import java.net.*;
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30 import java.util.Enumeration;
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31 import java.util.jar.*;
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32
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33 import com.oracle.graal.api.meta.*;
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34 import com.oracle.graal.bytecode.Bytecodes;
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35 import com.oracle.graal.debug.*;
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36 import com.oracle.graal.hotspot.bridge.*;
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37 import com.oracle.graal.hotspot.meta.*;
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38 import com.oracle.graal.nodes.*;
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39 import com.oracle.graal.phases.*;
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40 import com.oracle.graal.replacements.*;
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41
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42 /**
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43 * This class implements compile-the-world functionality in Graal.
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44 */
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45 public final class CompileTheWorld {
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46
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47 /**
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48 * This is our magic token to trigger reading files from the boot class path.
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49 */
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50 public static final String SUN_BOOT_CLASS_PATH = "sun.boot.class.path";
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51
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52 // Some runtime instances we need.
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53 private final HotSpotGraalRuntime graalRuntime = HotSpotGraalRuntime.getInstance();
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54 private final VMToCompilerImpl vmToCompiler = (VMToCompilerImpl) graalRuntime.getVMToCompiler();
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55
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56 /** List of Zip/Jar files to compile (see {@link GraalOptions#CompileTheWorld}. */
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57 private final String files;
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58
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59 /** Class index to start compilation at (see {@link GraalOptions#CompileTheWorldStartAt}. */
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60 private final int startAt;
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61
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62 /** Class index to stop compilation at (see {@link GraalOptions#CompileTheWorldStopAt}. */
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63 private final int stopAt;
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64
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65 // Counters
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66 private int classFileCounter = 0;
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67 private int compiledMethodsCounter = 0;
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68 private long compileTime = 0;
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69
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70 /**
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71 * Create a compile-the-world instance with default values from
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72 * {@link GraalOptions#CompileTheWorld}, {@link GraalOptions#CompileTheWorldStartAt} and
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73 * {@link GraalOptions#CompileTheWorldStopAt}.
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74 */
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75 public CompileTheWorld() {
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76 this(GraalOptions.CompileTheWorld, GraalOptions.CompileTheWorldStartAt, GraalOptions.CompileTheWorldStopAt);
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77 }
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78
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79 /**
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80 * Create a compile-the-world instance.
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81 *
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82 * @param files {@link File#pathSeparator} separated list of Zip/Jar files to compile
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83 * @param startAt index of the class file to start compilation at
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84 * @param stopAt index of the class file to stop compilation at
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85 */
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86 public CompileTheWorld(String files, int startAt, int stopAt) {
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87 this.files = files;
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88 this.startAt = startAt;
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89 this.stopAt = stopAt;
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90
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91 // We don't want the VM to exit when a method fails to compile.
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92 GraalOptions.ExitVMOnException = false;
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93 }
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94
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95 /**
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96 * Compile all methods in all classes in the Zip/Jar files in
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97 * {@link GraalOptions#CompileTheWorld}. If the GraalOptions.CompileTheWorld contains the magic
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98 * token {@link CompileTheWorld#SUN_BOOT_CLASS_PATH} passed up from HotSpot we take the files
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99 * from the boot class path.
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100 *
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101 * @throws Throwable
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102 */
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103 public void compile() throws Throwable {
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104 if (SUN_BOOT_CLASS_PATH.equals(files)) {
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105 final String[] entries = System.getProperty(SUN_BOOT_CLASS_PATH).split(File.pathSeparator);
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106 String bcpFiles = "";
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107 for (int i = 0; i < entries.length; i++) {
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108 final String entry = entries[i];
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109
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110 // We stop at rt.jar, unless it is the first boot class path entry.
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111 if (entry.endsWith("rt.jar") && (i > 0)) {
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112 break;
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113 }
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114 if (i > 0) {
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115 bcpFiles += File.pathSeparator;
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116 }
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117 bcpFiles += entry;
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118 }
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119 compile(bcpFiles);
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120 } else {
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121 compile(files);
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122 }
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123 }
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124
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125 /**
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126 * Compile all methods in all classes in the Zip/Jar files passed.
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127 *
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128 * @param fileList {@link File#pathSeparator} separated list of Zip/Jar files to compile
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129 * @throws Throwable
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130 */
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131 private void compile(String fileList) throws Throwable {
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132 final String[] entries = fileList.split(File.pathSeparator);
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133
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134 for (int i = 0; i < entries.length; i++) {
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135 final String entry = entries[i];
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136
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137 // For now we only compile all methods in all classes in zip/jar files.
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138 if (!entry.endsWith(".zip") && !entry.endsWith(".jar")) {
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139 TTY.println("CompileTheWorld : Skipped classes in " + entry);
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140 TTY.println();
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141 continue;
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142 }
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143
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144 TTY.println("CompileTheWorld : Compiling all classes in " + entry);
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145 TTY.println();
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146
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147 URL url = new URL("jar", "", "file:" + entry + "!/");
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148 ClassLoader loader = new URLClassLoader(new URL[]{url});
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149
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150 JarFile jarFile = new JarFile(entry);
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151 Enumeration<JarEntry> e = jarFile.entries();
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152
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153 while (e.hasMoreElements()) {
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154 JarEntry je = e.nextElement();
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155 if (je.isDirectory() || !je.getName().endsWith(".class")) {
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156 continue;
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157 }
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158
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159 // Are we done?
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160 if (classFileCounter >= stopAt) {
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161 break;
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162 }
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163
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164 String className = je.getName().substring(0, je.getName().length() - ".class".length());
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165 className = className.replace('/', '.');
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166 classFileCounter++;
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167
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168 try {
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169 // Load and initialize class
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170 Class<?> javaClass = Class.forName(className, true, loader);
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171
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172 // Pre-load all classes in the constant pool.
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173 try {
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174 HotSpotResolvedObjectType objectType = (HotSpotResolvedObjectType) HotSpotResolvedObjectType.fromClass(javaClass);
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175 ConstantPool constantPool = objectType.constantPool();
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176 for (int cpi = 1; cpi < constantPool.length(); cpi++) {
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177 constantPool.loadReferencedType(cpi, Bytecodes.LDC);
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178 }
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179 } catch (Throwable t) {
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180 // If something went wrong during pre-loading we just ignore it.
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181 TTY.println("CompileTheWorld (%d) : Preloading failed for %s", classFileCounter, className);
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182 }
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183
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184 // Are we compiling this class?
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185 if (classFileCounter >= startAt) {
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186 TTY.println("CompileTheWorld (%d) : %s", classFileCounter, className);
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187
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188 // Enqueue each constructor/method in the class for compilation.
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189 for (Constructor<?> constructor : javaClass.getDeclaredConstructors()) {
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190 HotSpotResolvedJavaMethod javaMethod = (HotSpotResolvedJavaMethod) graalRuntime.getRuntime().lookupJavaConstructor(constructor);
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191 if (canBeCompiled(javaMethod, constructor.getModifiers())) {
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192 compileMethod(javaMethod);
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193 }
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194 }
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195 for (Method method : javaClass.getDeclaredMethods()) {
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196 HotSpotResolvedJavaMethod javaMethod = (HotSpotResolvedJavaMethod) graalRuntime.getRuntime().lookupJavaMethod(method);
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197 if (canBeCompiled(javaMethod, method.getModifiers())) {
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198 compileMethod(javaMethod);
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199 }
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200 }
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201 }
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202 } catch (Throwable t) {
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203 TTY.println("CompileTheWorld (%d) : Skipping %s", classFileCounter, className);
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204 }
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205 }
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206 jarFile.close();
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207 }
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208
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209 TTY.println();
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210 TTY.println("CompileTheWorld : Done (%d classes, %d methods, %d ms)", classFileCounter, compiledMethodsCounter, compileTime);
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211 }
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212
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213 /**
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214 * Helper method to schedule a method for compilation and gather some statistics.
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215 */
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216 private void compileMethod(HotSpotResolvedJavaMethod method) {
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217 try {
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218 long start = System.currentTimeMillis();
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219 vmToCompiler.compileMethod(method, StructuredGraph.INVOCATION_ENTRY_BCI, true, 10);
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220 compileTime += (System.currentTimeMillis() - start);
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221 compiledMethodsCounter++;
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222 method.reprofile(); // makes the method also not-entrant
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223 } catch (Throwable t) {
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224 // Catch everything and print a message
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225 TTY.println("CompileTheWorld (%d) : Error compiling method: %s", classFileCounter, MetaUtil.format("%H.%n(%p):%r", method));
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226 t.printStackTrace(TTY.cachedOut);
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227 }
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228 }
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229
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230 /**
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231 * Helper method for CompileTheWorld to determine if a method should be compiled (Cf.
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232 * CompilationPolicy::can_be_compiled).
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233 *
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234 * @return true if it can be compiled, false otherwise
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235 */
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236 private static boolean canBeCompiled(HotSpotResolvedJavaMethod javaMethod, int modifiers) {
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237 if (Modifier.isAbstract(modifiers) || Modifier.isNative(modifiers)) {
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238 return false;
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239 }
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240 // This number is from HotSpot:
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241 final int hugeMethodLimit = 8000;
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242 if (javaMethod.getCodeSize() > hugeMethodLimit) {
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243 return false;
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244 }
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245 // Skip @Snippets for now
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246 if (javaMethod.getAnnotation(Snippet.class) != null) {
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247 return false;
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248 }
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249 return true;
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250 }
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251
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252 }
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