view test/compiler/6987555/Test6987555.java @ 2149:7e37af9d69ef

7011379: G1: overly long concurrent marking cycles Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads. Reviewed-by: johnc, ysr
author tonyp
date Wed, 19 Jan 2011 09:35:17 -0500
parents 5beba6174298
children 62a8557e8f36
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/*
 * Copyright (c) 2010, 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.
 *
 */

/**
 * @test
 * @bug 6987555
 * @summary JSR 292 unboxing to a boolean value fails on big-endian SPARC
 *
 * @run main/othervm -Xint -ea -XX:+UnlockExperimentalVMOptions -XX:+EnableMethodHandles -XX:+EnableInvokeDynamic -XX:+UnlockDiagnosticVMOptions -XX:+VerifyMethodHandles Test6987555
 */

import java.dyn.*;

public class Test6987555 {
    private static final Class   CLASS = Test6987555.class;
    private static final String  NAME  = "foo";
    private static final boolean DEBUG = false;

    public static void main(String[] args) throws Throwable {
        testboolean();
        testbyte();
        testchar();
        testshort();
        testint();
    }

    // boolean
    static void testboolean() throws Throwable {
        doboolean(false);
        doboolean(true);
    }
    static void doboolean(boolean x) throws Throwable {
        if (DEBUG)  System.out.println("boolean=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(boolean.class, boolean.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(boolean.class, Boolean.class));
        boolean a = mh1.<boolean>invokeExact(x);
        boolean b = mh2.<boolean>invokeExact(Boolean.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // byte
    static void testbyte() throws Throwable {
        byte[] a = new byte[] {
            Byte.MIN_VALUE,
            Byte.MIN_VALUE + 1,
            -0x0F,
            -1,
            0,
            1,
            0x0F,
            Byte.MAX_VALUE - 1,
            Byte.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            dobyte(a[i]);
        }
    }
    static void dobyte(byte x) throws Throwable {
        if (DEBUG)  System.out.println("byte=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(byte.class, byte.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(byte.class, Byte.class));
        byte a = mh1.<byte>invokeExact(x);
        byte b = mh2.<byte>invokeExact(Byte.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // char
    static void testchar() throws Throwable {
        char[] a = new char[] {
            Character.MIN_VALUE,
            Character.MIN_VALUE + 1,
            0x000F,
            0x00FF,
            0x0FFF,
            Character.MAX_VALUE - 1,
            Character.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            dochar(a[i]);
        }
    }
    static void dochar(char x) throws Throwable {
        if (DEBUG)  System.out.println("char=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(char.class, char.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(char.class, Character.class));
        char a = mh1.<char>invokeExact(x);
        char b = mh2.<char>invokeExact(Character.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // short
    static void testshort() throws Throwable {
        short[] a = new short[] {
            Short.MIN_VALUE,
            Short.MIN_VALUE + 1,
            -0x0FFF,
            -0x00FF,
            -0x000F,
            -1,
            0,
            1,
            0x000F,
            0x00FF,
            0x0FFF,
            Short.MAX_VALUE - 1,
            Short.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            doshort(a[i]);
        }
    }
    static void doshort(short x) throws Throwable {
        if (DEBUG)  System.out.println("short=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(short.class, short.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(short.class, Short.class));
        short a = mh1.<short>invokeExact(x);
        short b = mh2.<short>invokeExact(Short.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // int
    static void testint() throws Throwable {
        int[] a = new int[] {
            Integer.MIN_VALUE,
            Integer.MIN_VALUE + 1,
            -0x00000FFF,
            -0x000000FF,
            -0x0000000F,
            -1,
            0,
            1,
            0x0000000F,
            0x000000FF,
            0x00000FFF,
            Integer.MAX_VALUE - 1,
            Integer.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            doint(a[i]);
        }
    }
    static void doint(int x) throws Throwable {
        if (DEBUG)  System.out.println("int=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(int.class, int.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(int.class, Integer.class));
        int a = mh1.<int>invokeExact(x);
        int b = mh2.<int>invokeExact(Integer.valueOf(x));
        assert a == b : a + " != " + b;
    }

    public static boolean foo(boolean i) { return i; }
    public static byte    foo(byte    i) { return i; }
    public static char    foo(char    i) { return i; }
    public static short   foo(short   i) { return i; }
    public static int     foo(int     i) { return i; }
}