NAME¶
shmem_int4_finc(3), shmem_int8_finc(3), shmem_int_finc(3),
shmem_long_finc(3), shmem_longlong_finc(3) - Performs an atomic
fetch-and-increment operation on a remote data object
SYNOPSIS¶
C or C++:
#include <mpp/shmem.h>
int shmem_int_finc(int *target, int pe);
long shmem_long_finc(long *target, int pe);
long long shmem_longlong_finc(long long *target, int pe);
Fortran:
INCLUDE "mpp/shmem.fh"
INTEGER pe
INTEGER(KIND=4) SHMEM_INT4_FINC, target4
INTEGER(KIND=8) SHMEM_INT8_FINC, target8
ires4 = SHMEM_INT4_FINC(target4, pe)
ires8 = SHMEM_INT8_FINC(target8, pe)
DESCRIPTION¶
The fetch and increment routines retrieve the value at address target on
PE pe, and update target with the result of incrementing the
retrieved value by one. The operation must be completed without the
possibility of another process updating target between the time of the
fetch and the update.
The arguments are as follows:
- target
- The remotely accessible integer data object to be updated on the remote
PE. The type of target should match that implied in the SYNOPSIS
section.
- pe
- An integer that indicates the PE number upon which target is to be
updated. If you are using Fortran, it must be a default integer
value.
NOTES¶
The term remotely accessible is defined in intro_shmem(3).
RETURN VALUES¶
The contents that had been at the target address on the remote PE prior to the
increment.
