Manual Reference Pages - atomic_define (3)
atomic_define(3f) - [FORTRAN:INTRINSIC] Setting a variable atomically
CONTENTS
Syntax
Description
Arguments
Example
Standard
Class
See Also
SYNTAX
call atomic_define (atom, value [, stat])
DESCRIPTION
atomic_define(atom, value) defines the variable ATOM with the value VALUE atomically. 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.
ARGUMENTS
ATOM - Scalar coarray or coindexed variable of either integer type with atomic_int_kind kind or logical type with atomic_logical_kind kind. VALUE - Scalar of the same type as ATOM. If the kind is different, the value is converted to the kind of ATOM. STAT - (optional) Scalar default-kind integer variable.
EXAMPLE
Sample program:
program demo_atomic_define use iso_fortran_env integer(atomic_int_kind) :: atom[*] call atomic_define(atom[1], this_image()) end program demo_atomic_define
STANDARD
[[Fortran 2008]] and later; with STAT, [[TS 18508]] or later
CLASS
Atomic subroutine
SEE ALSO
[[atomic_ref]], [[atomic_cas]], [[iso_fortran_env]], [[atomic_add]], [[atomic_and]], [[atomic_or]], [[atomic_xor]]
| atomic_define (3) | March 18, 2019 |
