Atomics.hh File Reference

Atomics for use in kernel code (CUDA/HIP/OpenMP). More...

#include "corecel/Assert.hh"
#include "corecel/Macros.hh"
#include "corecel/Types.hh"
#include "Algorithms.hh"

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Macros
#define	CELER_CAPTURE_IF_OPENMP_TRACK
	Simply scope the next block.

Functions
template<class T >
CELER_FORCEINLINE_FUNCTION T	celeritas::atomic_add (T *address, T value)
	Add to a value, returning the original value.
template<class T >
CELER_FORCEINLINE_FUNCTION T	celeritas::atomic_min (T *address, T value)
	Set the value to the minimum of the actual and given, returning old.
template<class T >
CELER_FORCEINLINE_FUNCTION T	celeritas::atomic_max (T *address, T value)
	Set the value to the maximum of the actual and given, returning old.

Detailed Description

Atomics for use in kernel code (CUDA/HIP/OpenMP).

Note

On CPU, these functions assume the atomic add is being done in with track-level parallelism rather than event-level because these utilities are meant for "kernel" code. Multiple independent events must not use these functions to simultaneously modify shared data.

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