mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-17 13:53:57 -07:00
43137fef3f
Differential Revision: https://code.wildfiregames.com/D716
Refs 09e974e1cb
Reviewed By: bb
Change in agreement with leper.
This was SVN commit r19899.
98 lines
3 KiB
C++
98 lines
3 KiB
C++
/* Copyright (C) 2011 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* routines specific to IA-32
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*/
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#include "precompiled.h"
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#include "lib/sysdep/cpu.h"
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#include "lib/sysdep/arch/ia32/ia32.h"
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#if MSC_VERSION
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// VC 2008 and ICC 12 differ in their declaration of _Interlocked*
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#if ICC_VERSION
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typedef long* P32;
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typedef __int64* P64;
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#else
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typedef volatile long* P32;
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typedef volatile __int64* P64;
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#endif
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bool cpu_CAS(volatile intptr_t* location, intptr_t expected, intptr_t newValue)
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{
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const intptr_t initial = _InterlockedCompareExchange((P32)location, newValue, expected);
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return initial == expected;
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}
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bool cpu_CAS64(volatile i64* location, i64 expected, i64 newValue)
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{
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const i64 initial = _InterlockedCompareExchange64((P64)location, newValue, expected);
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return initial == expected;
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}
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intptr_t cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
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{
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return _InterlockedExchangeAdd((P32)location, increment);
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}
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#elif OS_MACOSX
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#include <libkern/OSAtomic.h>
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intptr_t cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
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{
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cassert(sizeof(intptr_t) == sizeof(int32_t));
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return OSAtomicAdd32Barrier(increment, (volatile int32_t*)location);
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}
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bool cpu_CAS(volatile intptr_t* location, intptr_t expected, intptr_t newValue)
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{
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cassert(sizeof(intptr_t) == sizeof(void*));
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return OSAtomicCompareAndSwapPtrBarrier((void*)expected, (void*)newValue, (void* volatile*)location);
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}
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bool cpu_CAS64(volatile i64* location, i64 expected, i64 newValue)
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{
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return OSAtomicCompareAndSwap64Barrier(expected, newValue, location);
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}
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#elif GCC_VERSION
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intptr_t cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
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{
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return __sync_fetch_and_add(location, increment);
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}
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bool cpu_CAS(volatile intptr_t* location, intptr_t expected, intptr_t newValue)
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{
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return __sync_bool_compare_and_swap(location, expected, newValue);
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}
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bool cpu_CAS64(volatile i64* location, i64 expected, i64 newValue)
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{
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return __sync_bool_compare_and_swap(location, expected, newValue);
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}
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#endif
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