platformIntrinsics.gcc.h

Public Functions

U32

dAtomicRead(volatile U32 & ref)

bool

dCompareAndSwap(volatile U32 & ref, U32 oldVal, U32 newVal)

bool

dCompareAndSwap(volatile U64 & ref, U64 oldVal, U64 newVal)

void

dFetchAndAdd(volatile S32 & ref, S32 val)

void

dFetchAndAdd(volatile U32 & ref, U32 val)

Public Functions

dAtomicRead(volatile U32 & ref)

Performs an atomic read operation.

dCompareAndSwap(volatile U32 & ref, U32 oldVal, U32 newVal)

dCompareAndSwap(volatile U64 & ref, U64 oldVal, U64 newVal)

dFetchAndAdd(volatile S32 & ref, S32 val)

dFetchAndAdd(volatile U32 & ref, U32 val)

  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 _TORQUE_PLATFORM_PLATFORMINTRINSICS_GCC_H_
 25#define _TORQUE_PLATFORM_PLATFORMINTRINSICS_GCC_H_
 26
 27/// @file
 28/// Compiler intrinsics for GCC.
 29
 30#ifdef TORQUE_OS_MAC
 31#include <libkern/OSAtomic.h>
 32#elif defined(TORQUE_OS_PS3)
 33#include <cell/atomic.h>
 34#endif
 35
 36// Fetch-And-Add
 37//
 38// NOTE: These do not return the pre-add value because
 39// not all platforms (damn you OSX) can do that.
 40//
 41inline void dFetchAndAdd( volatile U32& ref, U32 val )
 42{
 43   #if defined(TORQUE_OS_PS3)
 44      cellAtomicAdd32( (std::uint32_t *)&ref, val );
 45   #elif !defined(TORQUE_OS_MAC)
 46      __sync_fetch_and_add(&ref, val );
 47   #else
 48      OSAtomicAdd32( val, (int32_t* ) &ref);
 49   #endif
 50}
 51
 52inline void dFetchAndAdd( volatile S32& ref, S32 val )
 53{
 54   #if defined(TORQUE_OS_PS3)
 55      cellAtomicAdd32( (std::uint32_t *)&ref, val );
 56   #elif !defined(TORQUE_OS_MAC)
 57      __sync_fetch_and_add( &ref, val );
 58   #else
 59      OSAtomicAdd32( val, (int32_t* ) &ref);
 60   #endif
 61}
 62
 63// Compare-And-Swap
 64
 65inline bool dCompareAndSwap( volatile U32& ref, U32 oldVal, U32 newVal )
 66{
 67   // bool
 68   //OSAtomicCompareAndSwap32(int32_t oldValue, int32_t newValue, volatile int32_t *theValue);
 69   #if defined(TORQUE_OS_PS3)
 70      return ( cellAtomicCompareAndSwap32( (std::uint32_t *)&ref, newVal, oldVal ) == oldVal );
 71   #elif !defined(TORQUE_OS_MAC)
 72      return ( __sync_val_compare_and_swap( &ref, oldVal, newVal ) == oldVal );
 73   #else
 74      return OSAtomicCompareAndSwap32(oldVal, newVal, (int32_t *) &ref);
 75   #endif
 76}
 77
 78inline bool dCompareAndSwap( volatile U64& ref, U64 oldVal, U64 newVal )
 79{
 80   #if defined(TORQUE_OS_PS3)
 81      return ( cellAtomicCompareAndSwap32( (std::uint32_t *)&ref, newVal, oldVal ) == oldVal );
 82   #elif !defined(TORQUE_OS_MAC)
 83      return ( __sync_val_compare_and_swap( &ref, oldVal, newVal ) == oldVal );
 84   #else
 85      return OSAtomicCompareAndSwap64(oldVal, newVal, (int64_t *) &ref);
 86   #endif
 87
 88}
 89
 90/// Performs an atomic read operation.
 91inline U32 dAtomicRead( volatile U32 &ref )
 92{
 93   #if defined(TORQUE_OS_PS3)
 94      return cellAtomicAdd32( (std::uint32_t *)&ref, 0 );
 95   #elif !defined(TORQUE_OS_MAC)
 96      return __sync_fetch_and_add( ( volatile long* ) &ref, 0 );
 97   #else
 98      return OSAtomicAdd32( 0, (int32_t* ) &ref);
 99   #endif
100}
101
102#endif // _TORQUE_PLATFORM_PLATFORMINTRINSICS_GCC_H_
103