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#ifndef VISIT_ATOMIC_H
#define VISIT_ATOMIC_H
// Should add the cstdatomic values too.
//#include <cstdatomic>
// Could be overridden below.
#define VISIT_ATOMIC_INLINE inline
// Type of value used for the atomic functions.
#if defined(VISIT_ATOMIC_USE_GCC_ATOMIC) || defined(VISIT_ATOMIC_USE_ICC_ATOMIC)
typedef volatile int VISIT_ATOMIC_TYPE;
typedef int VISIT_ATOMIC_AMOUNT;
#elif defined(VISIT_ATOMIC_USE_WIN32_ATOMIC)
#include <windows.h>
#include <intrin.h>
#pragma intrinsic (_InterlockedIncrement)
#define InterlockedIncrement _InterlockedIncrement
#pragma intrinsic (_InterlockedDecrement)
#define InterlockedDecrement _InterlockedDecrement
#pragma intrinsic(_InterlockedAdd)
#define InterlockedAdd _InterlockedAdd
typedef volatile LONG VISIT_ATOMIC_TYPE;
typedef LONG VISIT_ATOMIC_AMOUNT;
#elif defined(VISIT_ATOMIC_USE_MAC32_ATOMIC)
#include <libkern/OSAtomic.h>
typedef volatile int32_t VISIT_ATOMIC_TYPE;
typedef int32_t VISIT_ATOMIC_AMOUNT;
#elif defined(VISIT_ATOMIC_USE_MIPOSPRO_ATOMIC)
typedef volatile unsigned int VISIT_ATOMIC_TYPE;
typedef int VISIT_ATOMIC_AMOUNT;
#elif defined(VISIT_ATOMIC_USE_SUN_ATOMIC)
typedef volatile uint_t ATOMIC_TYPE;
typedef int ATOMIC_AMOUNT;
#elif defined(VISIT_ATOMIC_USE_MUTEX)
#include "vtkCriticalSection.h"
typedef int VISIT_ATOMIC_TYPE;
typedef int VISIT_ATOMIC_AMOUNT;
#else
typedef int VISIT_ATOMIC_TYPE;
typedef int VISIT_ATOMIC_AMOUNT;
#endif
#if defined(VISIT_ATOMIC_NO_INLINE)
#define VISIT_ATOMIC_INLINE
#endif
// ****************************************************************************
// Method: AtomicInc
//
// Arguments:
// _value The value to be incremented by 1.
//
// Purpose:
// Performs an atomic increment operation on the specified value.
//
// Programmer: David Camp
// Creation: March 6, 2013
//
// ****************************************************************************
static VISIT_ATOMIC_INLINE VISIT_ATOMIC_TYPE AtomicInc(VISIT_ATOMIC_TYPE &_value)
{
#if defined(VISIT_ATOMIC_USE_GCC_ATOMIC) || defined(VISIT_ATOMIC_USE_ICC_ATOMIC)
return( __sync_add_and_fetch(&_value, 1) );
#elif defined(VISIT_ATOMIC_USE_WIN32_ATOMIC)
return( InterlockedIncrement(&_value) );
#elif defined(VISIT_ATOMIC_USE_MAC32_ATOMIC)
return( OSAtomicIncrement32(&_value) );
#elif defined(VISIT_ATOMIC_USE_MIPOSPRO_ATOMIC)
return( __add_and_fetch(&_value, 1) );
#elif defined(VISIT_ATOMIC_USE_SUN_ATOMIC)
return( atomic_inc_uint_nv(&_value) );
#elif defined(VISIT_ATOMIC_USE_MUTEX)
static vtkSimpleCriticalSection AtomicIncCritSec;
AtomicIncCritSec.Lock();
++_value;
AtomicIncCritSec.Unlock();
return( _value );
#else
return( ++_value );
#endif
}
// ****************************************************************************
// Method: AtomicAdd
//
// Arguments:
// _value The value to be incremented by the _amount variable.
// _amount The amount to increment the value by.
//
// Purpose:
// Performs an atomic addition operation on the specified value.
//
// Programmer: David Camp
// Creation: March 6, 2013
//
// ****************************************************************************
static VISIT_ATOMIC_INLINE VISIT_ATOMIC_TYPE AtomicAdd(VISIT_ATOMIC_TYPE &_value, VISIT_ATOMIC_AMOUNT _amount)
{
#if defined(VISIT_ATOMIC_USE_GCC_ATOMIC)
return( __sync_add_and_fetch(&_value, _amount) );
#elif defined(VISIT_ATOMIC_USE_WIN32_ATOMIC)
return( InterlockedAdd(&_value, _amount) );
#elif defined(VISIT_ATOMIC_USE_MAC32_ATOMIC)
return( OSAtomicAdd32(_amount, &_value) );
#elif defined(VISIT_ATOMIC_USE_MIPOSPRO_BUILTINS)
return( __add_and_fetch(&_value, _amount) );
#elif defined(VISIT_ATOMIC_USE_SUN_ATOMIC)
return( atomic_add_int_nv(&_value, _amount) );
#elif defined(VISIT_ATOMIC_USE_MUTEX)
static vtkSimpleCriticalSection AtomicIncCritSec;
AtomicIncCritSec.Lock();
_value += _amount;
AtomicIncCritSec.Unlock();
return( _value );
#else
return( _value += _amount );
#endif
}
// ****************************************************************************
// Method: AtomicDec
//
// Arguments:
// _value The value to be decremented by 1.
//
// Purpose:
// Performs an atomic subtraction operation on the specified value.
//
// Programmer: David Camp
// Creation: March 6, 2013
//
// ****************************************************************************
static VISIT_ATOMIC_INLINE VISIT_ATOMIC_TYPE AtomicDec(VISIT_ATOMIC_TYPE &_value)
{
#if defined(VISIT_ATOMIC_USE_GCC_ATOMIC) || defined(VISIT_ATOMIC_USE_ICC_ATOMIC)
return( __sync_sub_and_fetch(&_value, 1) );
#elif defined(VISIT_ATOMIC_USE_WIN32_ATOMIC)
return( InterlockedDecrement(&_value) );
#elif defined(VISIT_ATOMIC_USE_MAC32_ATOMIC)
return( OSAtomicDecrement32(&_value) );
#elif defined(VISIT_ATOMIC_USE_MIPOSPRO_ATOMIC)
return( __sub_and_fetch(&_value, 1) );
#elif defined(VISIT_ATOMIC_USE_SUN_ATOMIC)
return( atomic_dec_uint_nv(&_value) );
#elif defined(VISIT_ATOMIC_USE_MUTEX)
static vtkSimpleCriticalSection AtomicIncCritSec;
AtomicIncCritSec.Lock();
--_value;
AtomicIncCritSec.Unlock();
return( _value );
#else
return( --_value );
#endif
}
// ****************************************************************************
// Method: AtomicSub
//
// Arguments:
// _value The value to be decremented by the _amount variable.
// _amount The amount to decrement the value by.
//
// Purpose:
// Performs an atomic subtraction operation on the specified value.
//
// Programmer: David Camp
// Creation: March 6, 2013
//
// ****************************************************************************
static VISIT_ATOMIC_INLINE VISIT_ATOMIC_TYPE AtomicSub(VISIT_ATOMIC_TYPE &_value, VISIT_ATOMIC_AMOUNT _amount)
{
#if defined(VISIT_ATOMIC_USE_GCC_ATOMIC) || defined(VISIT_ATOMIC_USE_ICC_ATOMIC)
return( __sync_sub_and_fetch(&_value, _amount) );
#elif defined(VISIT_ATOMIC_USE_WIN32_ATOMIC)
return( InterlockedAdd(&_value, (-1 * _amount) );
#elif defined(VISIT_ATOMIC_USE_MAC32_ATOMIC)
return( OSAtomicAdd32((-1 * _amount), &_value) );
#elif defined(VISIT_ATOMIC_USE_MIPOSPRO_BUILTINS)
return( __add_and_fetch(&_value, (-1 *_amount) );
#elif defined(VISIT_ATOMIC_USE_SUN_ATOMIC)
return( atomic_sub_int_nv(&_value, _amount) );
#elif defined(VISIT_ATOMIC_USE_MUTEX)
static vtkSimpleCriticalSection AtomicIncCritSec;
AtomicIncCritSec.Lock();
_value -= _amount;
AtomicIncCritSec.Unlock();
return( _value );
#else
return( _value -= _amount );
#endif
}
#endif // VISIT_ATOMIC_H
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