|
« Return to documentation listing
Table of Contents
MPI_File_get_atomicity - Returns current consistency semantics
for data-access operations.
C Syntax
#include <mpi.h>
int MPI_File_get_atomicity(MPI_File fh, int *flag)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_FILE_GET_ATOMICITY(FH, FLAG, IERROR)
INTEGER FH, IERROR
LOGICAL FLAG
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
- fh
- File handle (handle).
- flag
- true if atomic
mode is enabled, false if nonatomic mode is enabled (boolean).
- IERROR
- Fortran
only: Error status (integer).
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.
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.
Table of Contents
« Return to documentation listing
|
