NAME

       MPI_File_get_atomicity - 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

C++ Syntax

       #include <mpi.h>
       bool MPI::File::Get_atomicity() const

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

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

ERRORS

       Almost  all  MPI  routines  return  an  error  value; C routines as the value of the function and Fortran
       routines in the last argument. C++ functions do not return errors. If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS,  then  on  error  the  C++  exception  mechanism  will  be used to throw an
       MPI::Exception object.

       Before the error value is returned, the current MPI error handler is called. For MPI I/O function errors,
       the  default  error  handler  is  set  to  MPI_ERRORS_RETURN.  The  error  handler  may  be  changed with
       MPI_File_set_errhandler; the predefined error handler MPI_ERRORS_ARE_FATAL may be used to make I/O errors
       fatal. Note that MPI does not guarantee that an MPI program can continue past an error.