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 java.lang.management.ManagementFactory; 27 28 import java.io.*; 29 import java.nio.file.Files; 30 import java.nio.file.Paths; 31 32 import java.util.List; 33 import java.util.concurrent.*; 34 35 public class CompileTheWorld { 36 // in case when a static constructor changes System::out and System::err 37 // we hold these values of output streams 38 static PrintStream OUT = System.out; 39 static final PrintStream ERR = System.err; 40 /** 41 * Entry point. Compiles classes in {@code paths} 42 * 43 * @param paths paths to jar/zip, dir contains classes, or to .lst file 44 * contains list of classes to compile 45 */ 46 public static void main(String[] paths) { 47 if (paths.length == 0) { 48 throw new IllegalArgumentException("Expect a path to a compile target."); 49 } 50 String logfile = Utils.LOG_FILE; 51 PrintStream os = null; 52 if (logfile != null) { 53 try { 54 os = new PrintStream(Files.newOutputStream(Paths.get(logfile))); 55 } catch (IOException io) { 56 } 57 } 58 if (os != null) { 59 OUT = os; 60 } 61 62 boolean passed = false; 63 64 try { 65 try { 66 if (ManagementFactory.getCompilationMXBean() == null) { 67 throw new RuntimeException( 68 "CTW can not work in interpreted mode"); 69 } 70 } catch (java.lang.NoClassDefFoundError e) { 71 // compact1, compact2 support 72 } 73 ExecutorService executor = createExecutor(); 74 long start = System.currentTimeMillis(); 75 try { 76 String path; 77 for (int i = 0, n = paths.length; i < n 78 && !PathHandler.isFinished(); ++i) { 79 path = paths[i]; 80 PathHandler.create(path, executor).process(); 81 } 82 } finally { 83 await(executor); 84 } 85 CompileTheWorld.OUT.printf("Done (%d classes, %d methods, %d ms)%n", 86 PathHandler.getClassCount(), 87 Compiler.getMethodCount(), 88 System.currentTimeMillis() - start); 89 passed = true; 90 } finally { 91 // <clinit> might have started new threads 92 System.exit(passed ? 0 : 1); 93 } 94 } 95 96 private static ExecutorService createExecutor() { 97 final int threadsCount = Math.min( 98 Runtime.getRuntime().availableProcessors(), 99 Utils.CI_COMPILER_COUNT); 100 ExecutorService result; 101 if (threadsCount > 1) { 102 result = new ThreadPoolExecutor(threadsCount, threadsCount, 103 /* keepAliveTime */ 0L, TimeUnit.MILLISECONDS, 104 new ArrayBlockingQueue<>(threadsCount), 105 new ThreadPoolExecutor.CallerRunsPolicy()); 106 } else { 107 result = new CurrentThreadExecutor(); 108 } 109 return result; 110 } 111 112 private static void await(ExecutorService executor) { 113 executor.shutdown(); 114 while (!executor.isTerminated()) { 115 try { 116 executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS); 117 } catch (InterruptedException ie) { 118 Thread.currentThread().interrupt(); 119 break; 120 } 121 } 122 } 123 124 private static class CurrentThreadExecutor extends AbstractExecutorService { 125 private boolean isShutdown; 126 127 @Override 128 public void shutdown() { 129 this.isShutdown = true; 130 } 131 132 @Override 133 public List<Runnable> shutdownNow() { 134 return null; 135 } 136 137 @Override 138 public boolean isShutdown() { 139 return isShutdown; 140 } 141 142 @Override 143 public boolean isTerminated() { 144 return isShutdown; 145 } 146 147 @Override 148 public boolean awaitTermination(long timeout, TimeUnit unit) 149 throws InterruptedException { 150 return isShutdown; 151 } 152 153 @Override 154 public void execute(Runnable command) { 155 command.run(); 156 } 157 } 158 } 159