Fri, 12 Feb 2010 15:27:36 -0800
Merge
duke@435 | 1 | /* |
xdono@1383 | 2 | * Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class Atomic : AllStatic { |
duke@435 | 26 | public: |
duke@435 | 27 | // Atomically store to a location |
duke@435 | 28 | static void store (jbyte store_value, jbyte* dest); |
duke@435 | 29 | static void store (jshort store_value, jshort* dest); |
duke@435 | 30 | static void store (jint store_value, jint* dest); |
duke@435 | 31 | static void store (jlong store_value, jlong* dest); |
duke@435 | 32 | static void store_ptr(intptr_t store_value, intptr_t* dest); |
duke@435 | 33 | static void store_ptr(void* store_value, void* dest); |
duke@435 | 34 | |
duke@435 | 35 | static void store (jbyte store_value, volatile jbyte* dest); |
duke@435 | 36 | static void store (jshort store_value, volatile jshort* dest); |
duke@435 | 37 | static void store (jint store_value, volatile jint* dest); |
duke@435 | 38 | static void store (jlong store_value, volatile jlong* dest); |
duke@435 | 39 | static void store_ptr(intptr_t store_value, volatile intptr_t* dest); |
duke@435 | 40 | static void store_ptr(void* store_value, volatile void* dest); |
duke@435 | 41 | |
kvn@1329 | 42 | static jlong load(volatile jlong* src); |
kvn@1329 | 43 | |
duke@435 | 44 | // Atomically add to a location, return updated value |
duke@435 | 45 | static jint add (jint add_value, volatile jint* dest); |
duke@435 | 46 | static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest); |
duke@435 | 47 | static void* add_ptr(intptr_t add_value, volatile void* dest); |
duke@435 | 48 | |
duke@435 | 49 | // Atomically increment location |
duke@435 | 50 | static void inc (volatile jint* dest); |
duke@435 | 51 | static void inc_ptr(volatile intptr_t* dest); |
duke@435 | 52 | static void inc_ptr(volatile void* dest); |
duke@435 | 53 | |
duke@435 | 54 | // Atomically decrement a location |
duke@435 | 55 | static void dec (volatile jint* dest); |
duke@435 | 56 | static void dec_ptr(volatile intptr_t* dest); |
duke@435 | 57 | static void dec_ptr(volatile void* dest); |
duke@435 | 58 | |
duke@435 | 59 | // Performs atomic exchange of *dest with exchange_value. Returns old prior value of *dest. |
coleenp@548 | 60 | static jint xchg(jint exchange_value, volatile jint* dest); |
coleenp@548 | 61 | static unsigned int xchg(unsigned int exchange_value, |
coleenp@548 | 62 | volatile unsigned int* dest); |
coleenp@548 | 63 | |
duke@435 | 64 | static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest); |
duke@435 | 65 | static void* xchg_ptr(void* exchange_value, volatile void* dest); |
duke@435 | 66 | |
duke@435 | 67 | // Performs atomic compare of *dest and compare_value, and exchanges *dest with exchange_value |
duke@435 | 68 | // if the comparison succeeded. Returns prior value of *dest. Guarantees a two-way memory |
duke@435 | 69 | // barrier across the cmpxchg. I.e., it's really a 'fence_cmpxchg_acquire'. |
duke@435 | 70 | static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value); |
duke@435 | 71 | static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value); |
duke@435 | 72 | static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value); |
coleenp@548 | 73 | |
coleenp@548 | 74 | static unsigned int cmpxchg(unsigned int exchange_value, |
coleenp@548 | 75 | volatile unsigned int* dest, |
coleenp@548 | 76 | unsigned int compare_value); |
coleenp@548 | 77 | |
duke@435 | 78 | static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); |
duke@435 | 79 | static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value); |
duke@435 | 80 | }; |