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- // notice, this list of conditions and the following disclaimer in the
- // documentation and/or other materials provided with the distribution.
- // * Neither the name of NVIDIA CORPORATION nor the names of its
- // contributors may be used to endorse or promote products derived
- // from this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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- //
- // Copyright (c) 2008-2026 NVIDIA Corporation. All rights reserved.
- // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+ // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+ // SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ // SPDX-License-Identifier: Apache-2.0
#include "foundation/PxAtomic.h"
#if ! PX_EMSCRIPTEN
#define PAUSE() asm("nop")
#else
#define PAUSE()
#endif
namespace physx
{
void* PxAtomicCompareExchangePointer(volatile void** dest, void* exch, void* comp)
{
return __sync_val_compare_and_swap(const_cast<void**>(dest), comp, exch);
}
PxI32 PxAtomicCompareExchange(volatile PxI32* dest, PxI32 exch, PxI32 comp)
{
return __sync_val_compare_and_swap(dest, comp, exch);
}
PxI64 PxAtomicCompareExchange(volatile PxI64* dest, PxI64 exch, PxI64 comp)
{
return __sync_val_compare_and_swap(dest, comp, exch);
}
PxI32 PxAtomicIncrement(volatile PxI32* val)
{
return __sync_add_and_fetch(val, 1);
}
PxI64 PxAtomicIncrement(volatile PxI64* val)
{
return __sync_add_and_fetch(val, 1);
}
PxI32 PxAtomicDecrement(volatile PxI32* val)
{
return __sync_sub_and_fetch(val, 1);
}
PxI64 PxAtomicDecrement(volatile PxI64* val)
{
return __sync_sub_and_fetch(val, 1);
}
PxI32 PxAtomicAdd(volatile PxI32* val, PxI32 delta)
{
return __sync_add_and_fetch(val, delta);
}
PxI64 PxAtomicAdd(volatile PxI64* val, PxI64 delta)
{
return __sync_add_and_fetch(val, delta);
}
PxI32 PxAtomicMax(volatile PxI32* val, PxI32 val2)
{
PxI32 oldVal, newVal;
do
{
PAUSE();
oldVal = *val;
if(val2 > oldVal)
newVal = val2;
else
newVal = oldVal;
} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
return *val;
}
PxI64 PxAtomicMax(volatile PxI64* val, PxI64 val2)
{
PxI64 oldVal, newVal;
do
{
PAUSE();
oldVal = *val;
if(val2 > oldVal)
newVal = val2;
else
newVal = oldVal;
} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
return *val;
}
PxI32 PxAtomicExchange(volatile PxI32* val, PxI32 val2)
{
PxI32 newVal, oldVal;
do
{
PAUSE();
oldVal = *val;
newVal = val2;
} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
return oldVal;
}
PxI64 PxAtomicExchange(volatile PxI64* val, PxI64 val2)
{
PxI64 newVal, oldVal;
do
{
PAUSE();
oldVal = *val;
newVal = val2;
} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
return oldVal;
}
PxI32 PxAtomicOr(volatile PxI32* val, PxI32 mask)
{
return __sync_fetch_and_or(val, mask);
}
PxI64 PxAtomicOr(volatile PxI64* val, PxI64 mask)
{
return __sync_fetch_and_or(val, mask);
}
PxI32 PxAtomicAnd(volatile PxI32* val, PxI32 mask)
{
return __sync_fetch_and_and(val, mask);
}
PxI64 PxAtomicAnd(volatile PxI64* val, PxI64 mask)
{
return __sync_fetch_and_and(val, mask);
}
} // namespace physx