Manual Reference Pages - atomic_ref (3fortran)
ATOMIC_REF(3) - [ATOMIC] Obtaining the value of a variable atomically
SYNOPSIS
call atomic_ref(value, atom [,stat] )
subroutine atomic_ref(value,atom,stat)integer(atomic_int_kind),intent(in) :: value integer(atomic_int_kind) :: atom[*] integer,intent(out),intent(out) :: stat
CHARACTERISTICS
o ATOM is a scalar coarray or coindexed variable of either integer type with atomic_int_kind kind or logical type with atomic_logical_kind kind. o VALUE is a scalar of the same type as ATOM. If the kind is different, the value is converted to the kind of ATOM. o STAT is a Scalar default-kind integer variable.
DESCRIPTION
ATOMIC_REF(3) atomically assigns the value of the variable ATOM to VALUE. When STAT is present and the invocation was successful, it is assigned the value 0. If it is present and the invocation has failed, it is assigned a positive value; in particular, for a coindexed ATOM, if the remote image has stopped, it is assigned the value of iso_fortran_env’s STAT_STOPPED_IMAGE and if the remote image has failed, the value STAT_FAILED_IMAGE.
OPTIONS
o VALUE : Scalar of the same type as ATOM. If the kind is different, the value is converted to the kind of ATOM. o ATOM : Scalar coarray or coindexed variable of either integer type with atomic_int_kind kind or logical type with atomic_logical_kind kind. o STAT : (optional) Scalar default-kind integer variable.
EXAMPLES
Sample program:
program demo_atomic_ref use iso_fortran_env implicit none logical(atomic_logical_kind) :: atom[*] logical :: val call atomic_ref( val, atom[1] ) if (val) then print *, "Obtained" endif end program demo_atomic_ref
STANDARD
Fortran 2008 ; with STAT, TS 18508
SEE ALSO
ATOMIC_DEFINE(3), ATOMIC_CAS(3), ISO_FORTRAN_ENV(3),
ATOMIC_FETCH_ADD(3), ATOMIC_FETCH_AND(3),
ATOMIC_FETCH_OR(3), ATOMIC_FETCH_XOR(3)
Fortran intrinsic descriptions
| Nemo Release 3.1 | atomic_ref (3fortran) | November 02, 2024 |
