8.25 ATOMIC_REF — Obtaining the value of a variable atomically

Description:

ATOMIC_DEFINE(ATOM, VALUE) atomically assigns the value of the variable ATOM to VALUE.

Standard:

Fortran 2008 and later

Class:

Atomic subroutine

Syntax:

CALL ATOMIC_REF(VALUE, ATOM)

Arguments:

VALURE	Scalar and of the same type as ATOM. If the kind is different, the value is converted to the kind of ATOM.
ATOM	Scalar coarray or coindexed variable of either integer type with ATOMIC_INT_KIND kind or logical type with ATOMIC_LOGICAL_KIND kind.

Example:

          program atomic
            use iso_fortran_env
            logical(atomic_logical_kind) :: atom[*]
            logical :: val
            call atomic_ref (atom, .false.)
            ! ...
            call atomic_ref (atom, val)
            if (val) then
              print *, "Obtained"
            end if
          end program atomic

See also:

ATOMIC_DEFINE, ISO_FORTRAN_ENV