/usr/include/trilinos/impl/Kokkos_Atomic_Fetch_And.hpp is in libtrilinos-kokkos-dev 12.12.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
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// documentation and/or other materials provided with the distribution.
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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#include <Kokkos_Macros.hpp>
#if defined( KOKKOS_ATOMIC_HPP ) && ! defined( KOKKOS_ATOMIC_FETCH_AND_HPP )
#define KOKKOS_ATOMIC_FETCH_AND_HPP
namespace Kokkos {
//----------------------------------------------------------------------------
#if defined( KOKKOS_ENABLE_CUDA )
#if defined(__CUDA_ARCH__) || defined(KOKKOS_IMPL_CUDA_CLANG_WORKAROUND)
// Support for int, unsigned int, unsigned long long int, and float
__inline__ __device__
int atomic_fetch_and( volatile int * const dest , const int val )
{ return atomicAnd((int*)dest,val); }
__inline__ __device__
unsigned int atomic_fetch_and( volatile unsigned int * const dest , const unsigned int val )
{ return atomicAnd((unsigned int*)dest,val); }
#if defined( __CUDA_ARCH__ ) && ( 350 <= __CUDA_ARCH__ )
__inline__ __device__
unsigned long long int atomic_fetch_and( volatile unsigned long long int * const dest ,
const unsigned long long int val )
{ return atomicAnd((unsigned long long int*)dest,val); }
#endif
#endif
#endif
//----------------------------------------------------------------------------
#if !defined(__CUDA_ARCH__) || defined(KOKKOS_IMPL_CUDA_CLANG_WORKAROUND)
#if defined(KOKKOS_ENABLE_GNU_ATOMICS) || defined(KOKKOS_ENABLE_INTEL_ATOMICS)
inline
int atomic_fetch_and( volatile int * const dest , const int val )
{ return __sync_fetch_and_and(dest,val); }
inline
long int atomic_fetch_and( volatile long int * const dest , const long int val )
{ return __sync_fetch_and_and(dest,val); }
#if defined( KOKKOS_ENABLE_GNU_ATOMICS )
inline
unsigned int atomic_fetch_and( volatile unsigned int * const dest , const unsigned int val )
{ return __sync_fetch_and_and(dest,val); }
inline
unsigned long int atomic_fetch_and( volatile unsigned long int * const dest , const unsigned long int val )
{ return __sync_fetch_and_and(dest,val); }
#endif
//----------------------------------------------------------------------------
#elif defined( KOKKOS_ENABLE_OPENMP_ATOMICS )
template< typename T >
T atomic_fetch_and( volatile T * const dest , const T val )
{
T retval;
#pragma omp atomic capture
{
retval = dest[0];
dest[0] &= val;
}
return retval;
}
#endif
#endif
//----------------------------------------------------------------------------
// Simpler version of atomic_fetch_and without the fetch
template <typename T>
KOKKOS_INLINE_FUNCTION
void atomic_and(volatile T * const dest, const T src) {
(void)atomic_fetch_and(dest,src);
}
}
#endif
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