Mercurial > hg > graal-compiler
view src/share/vm/runtime/atomic.hpp @ 549:fe3d7c11b4b7
6700941: G1: allocation spec missing for some G1 classes
Reviewed-by: tonyp
author | apetrusenko |
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date | Tue, 10 Feb 2009 18:39:09 +0300 |
parents | d1605aabd0a1 |
children | 665be97e8704 |
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/* * Copyright 1999-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ class Atomic : AllStatic { public: // Atomically store to a location static void store (jbyte store_value, jbyte* dest); static void store (jshort store_value, jshort* dest); static void store (jint store_value, jint* dest); static void store (jlong store_value, jlong* dest); static void store_ptr(intptr_t store_value, intptr_t* dest); static void store_ptr(void* store_value, void* dest); static void store (jbyte store_value, volatile jbyte* dest); static void store (jshort store_value, volatile jshort* dest); static void store (jint store_value, volatile jint* dest); static void store (jlong store_value, volatile jlong* dest); static void store_ptr(intptr_t store_value, volatile intptr_t* dest); static void store_ptr(void* store_value, volatile void* dest); // Atomically add to a location, return updated value static jint add (jint add_value, volatile jint* dest); static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest); static void* add_ptr(intptr_t add_value, volatile void* dest); // Atomically increment location static void inc (volatile jint* dest); static void inc_ptr(volatile intptr_t* dest); static void inc_ptr(volatile void* dest); // Atomically decrement a location static void dec (volatile jint* dest); static void dec_ptr(volatile intptr_t* dest); static void dec_ptr(volatile void* dest); // Performs atomic exchange of *dest with exchange_value. Returns old prior value of *dest. static jint xchg(jint exchange_value, volatile jint* dest); static unsigned int xchg(unsigned int exchange_value, volatile unsigned int* dest); static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest); static void* xchg_ptr(void* exchange_value, volatile void* dest); // Performs atomic compare of *dest and compare_value, and exchanges *dest with exchange_value // if the comparison succeeded. Returns prior value of *dest. Guarantees a two-way memory // barrier across the cmpxchg. I.e., it's really a 'fence_cmpxchg_acquire'. static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value); static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value); static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value); static unsigned int cmpxchg(unsigned int exchange_value, volatile unsigned int* dest, unsigned int compare_value); static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value); };