103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/* -----------------------------------------------------------------------------
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GSFramework
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Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
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----------------------------------------------------------------------------- */
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#include "thread/atomic_value.h"
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#include "assert/nassert.h"
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#if __PLATFORM_WINDOWS__
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#include <windows.h>
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namespace GS {
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namespace Threading {
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//------------------------------------------------------------------------------
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int Atomic32::Inc()
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{ return (int)InterlockedIncrement((LONG volatile *)v); }
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int Atomic32::Dec()
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{ return (int)InterlockedDecrement((LONG volatile *)v); }
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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int Atomic32::Get() const
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{ return *((int volatile *)v); }
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int Atomic32::Set(int _v)
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{ return InterlockedExchange((LONG volatile *)v, _v); }
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int Atomic32::Cas(int cmp, int _v)
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{ return InterlockedCompareExchange((LONG volatile *)v, _v, cmp); }
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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Atomic32::Atomic32(int _v)
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{
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v = _aligned_malloc(sizeof(LONG), 4);
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__ASSERT__(v != NULL);
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Set(_v);
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}
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Atomic32::~Atomic32()
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{ _aligned_free(v); }
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//------------------------------------------------------------------------------
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}
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}
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#elif (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 1)) // use >GCC4.1 builtins
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#include <malloc.h>
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namespace GS {
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namespace Threading {
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//------------------------------------------------------------------------------
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int Atomic32::Inc()
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{ return __sync_fetch_and_add((long volatile *)v, 1) + 1; }
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int Atomic32::Dec()
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{ return __sync_fetch_and_add((long volatile *)v, -1) - 1; }
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int Atomic32::Get() const
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{ return *((int volatile *)v); }
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int Atomic32::Set(int _v)
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{ return __sync_lock_test_and_set((long volatile *)v, _v); }
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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int Atomic32::Cas(int cmp, int _v)
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{ return __sync_val_compare_and_swap((long volatile *)v, cmp, _v); }
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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Atomic32::Atomic32(int _v)
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{
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v = memalign(4, sizeof(long));
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__ASSERT__(v != NULL);
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*(long *)v = _v;
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}
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Atomic32::~Atomic32()
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{ free(v); }
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//------------------------------------------------------------------------------
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}
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}
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#else
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namespace GS {
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namespace Threading {
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//------------------------------------------------------------------------------
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int Atomic32::Get() const
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{ __ASSERT(true); }
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int Atomic32::Set(int _v)
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{ __ASSERT(true); }
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int Atomic32::Cas(int cmp, int _v)
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{ __ASSERT(true); }
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//------------------------------------------------------------------------------
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}
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}
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#endif
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