mpi_file_get_atomicity(3)
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
- 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.