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MPI_File_get_atomicity.3.rst

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MPI_File_get_atomicity

:ref:`MPI_File_get_atomicity` |mdash| Returns current consistency semantics for data-access operations.

SYNTAX

C Syntax

#include <mpi.h>

int MPI_File_get_atomicity(MPI_File fh, int *flag)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_FILE_GET_ATOMICITY(FH, FLAG, IERROR)
     INTEGER FH, IERROR
     LOGICAL FLAG

Fortran 2008 Syntax

USE mpi_f08
MPI_File_get_atomicity(fh, flag, ierror)
     TYPE(MPI_File), INTENT(IN) :: fh
     LOGICAL, INTENT(OUT) :: flag
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

INPUT PARAMETER

  • fh: File handle (handle).

OUTPUT PARAMETER

  • flag: true if atomic mode is enabled, false if nonatomic mode is enabled (boolean).
  • ierror: Fortran only: Error status (integer).

DESCRIPTION

:ref:`MPI_File_get_atomicity` returns the current consistency semantics for data access operations on the set of file handles created by one collective :ref:`MPI_File_open`. If flag is true, atomic mode is currently enabled; if flag is false, nonatomic mode is currently enabled.

ERRORS