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view test/compiler/6987555/Test6987555.java @ 2134:b158bed62ef5
6994297: G1: do first-level slow-path allocations with a CAS
Summary: First attempt to allocate out the current alloc region using a CAS instead of taking the Heap_lock (first level of G1's slow allocation path). Only if that fails and it's necessary to replace the current alloc region take the Heap_lock (that's the second level of G1's slow allocation path).
Reviewed-by: johnc, brutisso, ysr
author | tonyp |
---|---|
date | Wed, 12 Jan 2011 16:34:25 -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; } }