platformIntrinsics.h

Public Functions

bool

dCompareAndSwap(T *volatile & refPtr, T * oldPtr, T * newPtr)

bool

dTestAndSet(volatile U32 & ref)

bool

dTestAndSet(volatile U64 & ref)

Public Functions

dCompareAndSwap(T *volatile & refPtr, T * oldPtr, T * newPtr)

dTestAndSet(volatile U32 & ref)

dTestAndSet(volatile U64 & ref)

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2012 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#ifndef _PLATFORMINTRINSICS_H_
25#define _PLATFORMINTRINSICS_H_
26
27#ifndef _TORQUE_TYPES_H_
28#  include "platform/types.h"
29#endif
30
31#if defined( TORQUE_COMPILER_VISUALC )
32#  include "platform/platformIntrinsics.visualc.h"
33#elif defined ( TORQUE_COMPILER_GCC )
34#  include "platform/platformIntrinsics.gcc.h"
35#else
36#  error No intrinsics implemented for compiler.
37#endif
38
39//TODO: 64bit safe
40
41template< typename T >
42inline bool dCompareAndSwap( T* volatile& refPtr, T* oldPtr, T* newPtr )
43{
44   return dCompareAndSwap( *reinterpret_cast< volatile uintptr_t* >( &refPtr ), ( uintptr_t ) oldPtr, ( uintptr_t ) newPtr );
45}
46
47// Test-And-Set
48
49inline bool dTestAndSet( volatile U32& ref )
50{
51   return dCompareAndSwap( ref, 0, 1 );
52}
53inline bool dTestAndSet( volatile U64& ref )
54{
55   return dCompareAndSwap( ref, 0, 1 );
56}
57
58#endif // _PLATFORMINTRINSICS_H_
59