/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.hotspot.tools.ctw; import sun.hotspot.WhiteBox; import sun.misc.SharedSecrets; import sun.reflect.ConstantPool; import java.lang.reflect.Executable; import java.util.Objects; import java.util.concurrent.Executor; import java.util.concurrent.atomic.AtomicLong; /** * Provide method to compile whole class. * Also contains compiled methods and classes counters. * * @author igor.ignatyev@oracle.com */ public class Compiler { private Compiler() { } private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox(); private static final AtomicLong CLASS_COUNT = new AtomicLong(0L); private static final AtomicLong METHOD_COUNT = new AtomicLong(0L); private static volatile boolean CLASSES_LIMIT_REACHED = false; /** * @return count of processed classes */ public static long getClassCount() { return CLASS_COUNT.get(); } /** * @return count of processed methods */ public static long getMethodCount() { return METHOD_COUNT.get(); } /** * @return {@code true} if classes limit is reached */ public static boolean isLimitReached() { return CLASSES_LIMIT_REACHED; } /** * Compiles all methods and constructors. * * @param aClass class to compile * @param executor executor used for compile task invocation * @throws NullPointerException if {@code class} or {@code executor} * is {@code null} */ public static void compileClass(Class aClass, Executor executor) { Objects.requireNonNull(aClass); Objects.requireNonNull(executor); long id = CLASS_COUNT.incrementAndGet(); if (id > Utils.COMPILE_THE_WORLD_STOP_AT) { CLASS_COUNT.decrementAndGet(); CLASSES_LIMIT_REACHED = true; return; } if (id >= Utils.COMPILE_THE_WORLD_START_AT) { String name = aClass.getName(); try { System.out.printf("[%d]\t%s%n", id, name); ConstantPool constantPool = SharedSecrets.getJavaLangAccess(). getConstantPool(aClass); if (Utils.COMPILE_THE_WORLD_PRELOAD_CLASSES) { preloadClasses(name, id, constantPool); } long methodCount = 0; for (Executable e : aClass.getDeclaredConstructors()) { ++methodCount; executor.execute(new CompileMethodCommand(id, name, e)); } for (Executable e : aClass.getDeclaredMethods()) { ++methodCount; executor.execute(new CompileMethodCommand(id, name, e)); } METHOD_COUNT.addAndGet(methodCount); if (Utils.DEOPTIMIZE_ALL_CLASSES_RATE > 0 && (id % Utils.DEOPTIMIZE_ALL_CLASSES_RATE == 0)) { WHITE_BOX.deoptimizeAll(); } } catch (Throwable t) { System.out.printf("[%d]\t%s\tskipping %s%n", id, name, t); t.printStackTrace(); } } } private static void preloadClasses(String className, long id, ConstantPool constantPool) { try { for (int i = 0, n = constantPool.getSize(); i < n; ++i) { try { constantPool.getClassAt(i); } catch (IllegalArgumentException ignore) { } } } catch (Throwable t) { System.out.printf("[%d]\t%s\tpreloading failed : %s%n", id, className, t); } } /** * Compilation of method. * Will compile method on all available comp levels. */ private static class CompileMethodCommand implements Runnable { private final long classId; private final String className; private final Executable method; /** * @param classId id of class * @param className name of class * @param method compiled for compilation */ public CompileMethodCommand(long classId, String className, Executable method) { this.classId = classId; this.className = className; this.method = method; } @Override public final void run() { int compLevel = Utils.INITIAL_COMP_LEVEL; if (Utils.TIERED_COMPILATION) { for (int i = compLevel; i <= Utils.TIERED_STOP_AT_LEVEL; ++i) { WHITE_BOX.deoptimizeMethod(method); compileMethod(method, i); } } else { compileMethod(method, compLevel); } } private void waitCompilation() { if (!Utils.BACKGROUND_COMPILATION) { return; } final Object obj = new Object(); synchronized (obj) { for (int i = 0; i < 10 && WHITE_BOX.isMethodQueuedForCompilation(method); ++i) { try { obj.wait(1000); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } } } private void compileMethod(Executable method, int compLevel) { if (WHITE_BOX.isMethodCompilable(method, compLevel)) { try { WHITE_BOX.enqueueMethodForCompilation(method, compLevel); waitCompilation(); int tmp = WHITE_BOX.getMethodCompilationLevel(method); if (tmp != compLevel) { logMethod(method, "compilation level = " + tmp + ", but not " + compLevel); } else if (Utils.IS_VERBOSE) { logMethod(method, "compilation level = " + tmp + ". OK"); } } catch (Throwable t) { logMethod(method, "error on compile at " + compLevel + " level"); t.printStackTrace(); } } else if (Utils.IS_VERBOSE) { logMethod(method, "not compilable at " + compLevel); } } private void logMethod(Executable method, String message) { StringBuilder builder = new StringBuilder("["); builder.append(classId); builder.append("]\t"); builder.append(className); builder.append("::"); builder.append(method.getName()); builder.append('('); Class[] params = method.getParameterTypes(); for (int i = 0, n = params.length - 1; i < n; ++i) { builder.append(params[i].getName()); builder.append(", "); } if (params.length != 0) { builder.append(params[params.length - 1].getName()); } builder.append(')'); if (message != null) { builder.append('\t'); builder.append(message); } System.err.println(builder); } } }