1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/lambdaShapes/org/openjdk/tests/separate/Compiler.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,229 @@
1.4 +/*
1.5 + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package org.openjdk.tests.separate;
1.30 +
1.31 +import java.util.*;
1.32 +import java.util.concurrent.atomic.AtomicInteger;
1.33 +import java.util.concurrent.ConcurrentHashMap;
1.34 +import java.io.*;
1.35 +import java.net.URI;
1.36 +import javax.tools.*;
1.37 +
1.38 +import com.sun.source.util.JavacTask;
1.39 +
1.40 +import static org.openjdk.tests.separate.SourceModel.Type;
1.41 +import static org.openjdk.tests.separate.SourceModel.Class;
1.42 +import static org.openjdk.tests.separate.SourceModel.Extends;
1.43 +import static org.openjdk.tests.separate.SourceModel.SourceProcessor;
1.44 +
1.45 +public class Compiler {
1.46 +
1.47 + public enum Flags {
1.48 + VERBOSE, // Prints out files as they are compiled
1.49 + USECACHE // Keeps results around for reuse. Only use this is
1.50 + // you're sure that each compilation name maps to the
1.51 + // same source code
1.52 + }
1.53 +
1.54 + private static final AtomicInteger counter = new AtomicInteger();
1.55 + private static final String targetDir = "gen-separate";
1.56 + private static final File root = new File(targetDir);
1.57 + private static ConcurrentHashMap<String,File> cache =
1.58 + new ConcurrentHashMap<>();
1.59 +
1.60 + Set<Flags> flags;
1.61 +
1.62 + private JavaCompiler systemJavaCompiler;
1.63 + private StandardJavaFileManager fm;
1.64 + private List<File> tempDirs;
1.65 + private List<ClassFilePreprocessor> postprocessors;
1.66 +
1.67 + private static class SourceFile extends SimpleJavaFileObject {
1.68 + private final String content;
1.69 +
1.70 + public SourceFile(String name, String content) {
1.71 + super(URI.create("myfo:/" + name + ".java"), Kind.SOURCE);
1.72 + this.content = content;
1.73 + }
1.74 +
1.75 + public CharSequence getCharContent(boolean ignoreEncodingErrors) {
1.76 + return toString();
1.77 + }
1.78 +
1.79 + public String toString() { return this.content; }
1.80 + }
1.81 +
1.82 + public Compiler(Flags ... flags) {
1.83 + setFlags(flags);
1.84 + this.tempDirs = new ArrayList<>();
1.85 + this.postprocessors = new ArrayList<>();
1.86 + this.systemJavaCompiler = ToolProvider.getSystemJavaCompiler();
1.87 + this.fm = systemJavaCompiler.getStandardFileManager(null, null, null);
1.88 + }
1.89 +
1.90 + public void setFlags(Flags ... flags) {
1.91 + this.flags = new HashSet<>(Arrays.asList(flags));
1.92 + }
1.93 +
1.94 + public void addPostprocessor(ClassFilePreprocessor cfp) {
1.95 + this.postprocessors.add(cfp);
1.96 + }
1.97 +
1.98 + /**
1.99 + * Compile hierarchies starting with each of the 'types' and return
1.100 + * a ClassLoader that can be used to load the compiled classes.
1.101 + */
1.102 + public ClassLoader compile(Type ... types) {
1.103 + ClassFilePreprocessor[] cfps = this.postprocessors.toArray(
1.104 + new ClassFilePreprocessor[0]);
1.105 +
1.106 + DirectedClassLoader dcl = new DirectedClassLoader(cfps);
1.107 +
1.108 + for (Type t : types) {
1.109 + for (Map.Entry<String,File> each : compileHierarchy(t).entrySet()) {
1.110 + dcl.setLocationFor(each.getKey(), each.getValue());
1.111 + }
1.112 + }
1.113 + return dcl;
1.114 + }
1.115 +
1.116 + /**
1.117 + * Compiles and loads a hierarchy, starting at 'type'
1.118 + */
1.119 + public java.lang.Class<?> compileAndLoad(Type type)
1.120 + throws ClassNotFoundException {
1.121 +
1.122 + ClassLoader loader = compile(type);
1.123 + return java.lang.Class.forName(type.getName(), false, loader);
1.124 + }
1.125 +
1.126 + /**
1.127 + * Compiles a hierarchy, starting at 'type' and return a mapping of the
1.128 + * name to the location where the classfile for that type resides.
1.129 + */
1.130 + private Map<String,File> compileHierarchy(Type type) {
1.131 + HashMap<String,File> outputDirs = new HashMap<>();
1.132 +
1.133 + File outDir = compileOne(type);
1.134 + outputDirs.put(type.getName(), outDir);
1.135 +
1.136 + Class superClass = type.getSuperclass();
1.137 + if (superClass != null)
1.138 + outputDirs.putAll(compileHierarchy(superClass));
1.139 + for (Extends ext : type.getSupertypes())
1.140 + outputDirs.putAll(compileHierarchy(ext.getType()));
1.141 +
1.142 + return outputDirs;
1.143 + }
1.144 +
1.145 + private File compileOne(Type type) {
1.146 + if (this.flags.contains(Flags.USECACHE)) {
1.147 + File dir = cache.get(type.getName());
1.148 + if (dir != null) {
1.149 + return dir;
1.150 + }
1.151 + }
1.152 + List<JavaFileObject> files = new ArrayList<>();
1.153 + SourceProcessor accum =
1.154 + (name, src) -> { files.add(new SourceFile(name, src)); };
1.155 +
1.156 + Collection<Type> deps = type.typeDependencies(type.isFullCompilation());
1.157 + for (Type dep : deps) {
1.158 + if (type.isFullCompilation())
1.159 + dep.generate(accum);
1.160 + else
1.161 + dep.generateAsDependency(accum, type.methodDependencies());
1.162 + }
1.163 +
1.164 + type.generate(accum);
1.165 +
1.166 + JavacTask ct = (JavacTask)this.systemJavaCompiler.getTask(
1.167 + null, this.fm, null, null, null, files);
1.168 + File destDir = null;
1.169 + do {
1.170 + int value = counter.incrementAndGet();
1.171 + destDir = new File(root, Integer.toString(value));
1.172 + } while (destDir.exists());
1.173 +
1.174 + if (this.flags.contains(Flags.VERBOSE)) {
1.175 + System.out.println("Compilation unit for " + type.getName() +
1.176 + " : compiled into " + destDir);
1.177 + for (JavaFileObject jfo : files) {
1.178 + System.out.println(jfo.toString());
1.179 + }
1.180 + }
1.181 +
1.182 + try {
1.183 + destDir.mkdirs();
1.184 + this.fm.setLocation(
1.185 + StandardLocation.CLASS_OUTPUT, Arrays.asList(destDir));
1.186 + } catch (IOException e) {
1.187 + throw new RuntimeException(
1.188 + "IOException encountered during compilation", e);
1.189 + }
1.190 + Boolean result = ct.call();
1.191 + if (result == Boolean.FALSE) {
1.192 + throw new RuntimeException(
1.193 + "Compilation failure in " + type.getName() + " unit");
1.194 + }
1.195 + if (this.flags.contains(Flags.USECACHE)) {
1.196 + File existing = cache.putIfAbsent(type.getName(), destDir);
1.197 + if (existing != null) {
1.198 + deleteDir(destDir);
1.199 + return existing;
1.200 + }
1.201 + } else {
1.202 + this.tempDirs.add(destDir);
1.203 + }
1.204 + return destDir;
1.205 + }
1.206 +
1.207 + private static void deleteDir(File dir) {
1.208 + for (File f : dir.listFiles()) {
1.209 + f.delete();
1.210 + };
1.211 + dir.delete();
1.212 + }
1.213 +
1.214 + public void cleanup() {
1.215 + if (!this.flags.contains(Flags.USECACHE)) {
1.216 + for (File d : tempDirs) {
1.217 + deleteDir(d);
1.218 + };
1.219 + tempDirs = new ArrayList<>();
1.220 + }
1.221 + }
1.222 +
1.223 + // Removes all of the elements in the cache and deletes the associated
1.224 + // output directories. This may not actually empty the cache if there
1.225 + // are concurrent users of it.
1.226 + public static void purgeCache() {
1.227 + for (Map.Entry<String,File> entry : cache.entrySet()) {
1.228 + cache.remove(entry.getKey());
1.229 + deleteDir(entry.getValue());
1.230 + }
1.231 + }
1.232 +}
