172 lines
4.1 KiB
C++
172 lines
4.1 KiB
C++
// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2025 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#include "foundation/PxAtomic.h"
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#if ! PX_EMSCRIPTEN
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#define PAUSE() asm("nop")
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#else
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#define PAUSE()
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#endif
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namespace physx
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{
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void* PxAtomicCompareExchangePointer(volatile void** dest, void* exch, void* comp)
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{
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return __sync_val_compare_and_swap(const_cast<void**>(dest), comp, exch);
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}
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PxI32 PxAtomicCompareExchange(volatile PxI32* dest, PxI32 exch, PxI32 comp)
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{
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return __sync_val_compare_and_swap(dest, comp, exch);
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}
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PxI64 PxAtomicCompareExchange(volatile PxI64* dest, PxI64 exch, PxI64 comp)
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{
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return __sync_val_compare_and_swap(dest, comp, exch);
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}
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PxI32 PxAtomicIncrement(volatile PxI32* val)
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{
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return __sync_add_and_fetch(val, 1);
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}
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PxI64 PxAtomicIncrement(volatile PxI64* val)
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{
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return __sync_add_and_fetch(val, 1);
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}
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PxI32 PxAtomicDecrement(volatile PxI32* val)
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{
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return __sync_sub_and_fetch(val, 1);
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}
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PxI64 PxAtomicDecrement(volatile PxI64* val)
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{
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return __sync_sub_and_fetch(val, 1);
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}
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PxI32 PxAtomicAdd(volatile PxI32* val, PxI32 delta)
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{
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return __sync_add_and_fetch(val, delta);
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}
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PxI64 PxAtomicAdd(volatile PxI64* val, PxI64 delta)
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{
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return __sync_add_and_fetch(val, delta);
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}
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PxI32 PxAtomicMax(volatile PxI32* val, PxI32 val2)
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{
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PxI32 oldVal, newVal;
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do
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{
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PAUSE();
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oldVal = *val;
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if(val2 > oldVal)
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newVal = val2;
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else
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newVal = oldVal;
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} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
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return *val;
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}
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PxI64 PxAtomicMax(volatile PxI64* val, PxI64 val2)
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{
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PxI64 oldVal, newVal;
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do
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{
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PAUSE();
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oldVal = *val;
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if(val2 > oldVal)
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newVal = val2;
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else
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newVal = oldVal;
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} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
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return *val;
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}
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PxI32 PxAtomicExchange(volatile PxI32* val, PxI32 val2)
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{
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PxI32 newVal, oldVal;
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do
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{
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PAUSE();
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oldVal = *val;
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newVal = val2;
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} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
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return oldVal;
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}
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PxI64 PxAtomicExchange(volatile PxI64* val, PxI64 val2)
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{
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PxI64 newVal, oldVal;
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do
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{
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PAUSE();
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oldVal = *val;
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newVal = val2;
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} while(PxAtomicCompareExchange(val, newVal, oldVal) != oldVal);
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return oldVal;
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}
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PxI32 PxAtomicOr(volatile PxI32* val, PxI32 mask)
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{
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return __sync_or_and_fetch(val, mask);
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}
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PxI64 PxAtomicOr(volatile PxI64* val, PxI64 mask)
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{
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return __sync_or_and_fetch(val, mask);
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}
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PxI32 PxAtomicAnd(volatile PxI32* val, PxI32 mask)
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{
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return __sync_and_and_fetch(val, mask);
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}
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PxI64 PxAtomicAnd(volatile PxI64* val, PxI64 mask)
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{
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return __sync_and_and_fetch(val, mask);
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}
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} // namespace physx
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