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/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import sun.hotspot.WhiteBox;
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import sun.management.ManagementFactoryHelper;
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import com.sun.management.HotSpotDiagnosticMXBean;
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import java.lang.reflect.Method;
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/*
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* @author igor.ignatyev@oracle.com
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*/
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public abstract class CompilerWhiteBoxTest {
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protected static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
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protected static final Method METHOD = getMethod("method");
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protected static final int COMPILE_THRESHOLD
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= Integer.parseInt(getVMOption("CompileThreshold", "10000"));
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protected static final boolean BACKGROUND_COMPILATION
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= Boolean.valueOf(getVMOption("BackgroundCompilation", "true"));
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protected static Method getMethod(String name) {
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try {
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return CompilerWhiteBoxTest.class.getDeclaredMethod(name);
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} catch (NoSuchMethodException | SecurityException e) {
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throw new RuntimeException(
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"exception on getting method " + name, e);
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}
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}
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protected static String getVMOption(String name) {
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String result;
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HotSpotDiagnosticMXBean diagnostic
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= ManagementFactoryHelper.getDiagnosticMXBean();
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result = diagnostic.getVMOption(name).getValue();
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return result;
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}
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protected static String getVMOption(String name, String defaultValue) {
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String result = getVMOption(name);
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return result == null ? defaultValue : result;
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}
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protected final void runTest() throws RuntimeException {
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if (ManagementFactoryHelper.getCompilationMXBean() == null) {
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System.err.println(
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"Warning: test is not applicable in interpreted mode");
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return;
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}
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System.out.println("at test's start:");
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printInfo(METHOD);
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try {
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test();
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} catch (Exception e) {
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System.out.printf("on exception '%s':", e.getMessage());
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printInfo(METHOD);
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e.printStackTrace();
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throw new RuntimeException(e);
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}
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System.out.println("at test's end:");
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printInfo(METHOD);
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}
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protected static void checkNotCompiled(Method method) {
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if (WHITE_BOX.isMethodCompiled(method)) {
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throw new RuntimeException(method + " must be not compiled");
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}
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if (WHITE_BOX.getMethodCompilationLevel(method) != 0) {
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throw new RuntimeException(method + " comp_level must be == 0");
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}
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}
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protected static void checkCompiled(Method method)
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throws InterruptedException {
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final long start = System.currentTimeMillis();
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waitBackgroundCompilation(method);
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if (WHITE_BOX.isMethodQueuedForCompilation(method)) {
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System.err.printf("Warning: %s is still in queue after %dms%n",
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method, System.currentTimeMillis() - start);
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return;
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}
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if (!WHITE_BOX.isMethodCompiled(method)) {
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throw new RuntimeException(method + " must be compiled");
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}
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if (WHITE_BOX.getMethodCompilationLevel(method) == 0) {
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throw new RuntimeException(method + " comp_level must be != 0");
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}
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}
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protected static void waitBackgroundCompilation(Method method)
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throws InterruptedException {
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if (!BACKGROUND_COMPILATION) {
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return;
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}
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final Object obj = new Object();
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synchronized (obj) {
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for (int i = 0; i < 10; ++i) {
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if (!WHITE_BOX.isMethodQueuedForCompilation(method)) {
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break;
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}
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obj.wait(1000);
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}
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}
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}
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protected static void printInfo(Method method) {
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System.out.printf("%n%s:%n", method);
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System.out.printf("\tcompilable:\t%b%n",
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WHITE_BOX.isMethodCompilable(method));
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System.out.printf("\tcompiled:\t%b%n",
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WHITE_BOX.isMethodCompiled(method));
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System.out.printf("\tcomp_level:\t%d%n",
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WHITE_BOX.getMethodCompilationLevel(method));
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System.out.printf("\tin_queue:\t%b%n",
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WHITE_BOX.isMethodQueuedForCompilation(method));
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System.out.printf("compile_queues_size:\t%d%n%n",
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WHITE_BOX.getCompileQueuesSize());
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}
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protected abstract void test() throws Exception;
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protected final int compile() {
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int result = 0;
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int count = Math.max(COMPILE_THRESHOLD, 150000);
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for (int i = 0; i < count; ++i) {
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result += method();
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}
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System.out.println("method was invoked " + count + " times");
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return result;
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}
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protected int method() {
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return 42;
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}
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}
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