int MPI_File_get_errhandler(
  MPI_File file,
  MPI_Errhandler *errhandler
);

Parameters

file

[in] MPI file (handle)

errhandler

[out] handler currently associated with file (handle)

Remarks

Retrieves the error handler currently associated with a file.

Thread and Interrupt Safety

This routine is thread and interrupt safe only if no MPI routine that updates or frees the same MPI object may be called concurrently with this routine.

The MPI standard defined a thread-safe interface but this does not mean that all routines may be called without any thread locks. For example, two threads must not attempt to change the contents of the same MPI_Info object concurrently. The user is responsible in this case for using some mechanism, such as thread locks, to ensure that only one thread at a time makes use of this routine.

Notes for Fortran

All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGER in Fortran.

Errors

All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error; however, MPI implementations will attempt to continue whenever possible.

MPI_SUCCESS

No error; MPI routine completed successfully.

Example Code

The following sample code illustrates MPI_File_get_errhandler.

#include "mpi.h"
#include <stdio.h>

int main( int argc, char *argv[] )
{
    MPI_Fint handleA, handleB;
    int rc;
    int errs = 0;
    int rank;
    MPI_File cFile;
    MPI_Errhandler eh;

    MPI_Init( &argc, &argv );
    MPI_Comm_rank( MPI_COMM_WORLD, &rank );
    rc = MPI_File_open( MPI_COMM_WORLD, "temp", MPI_MODE_RDWR | MPI_MODE_CREATE, MPI_INFO_NULL, &cFile );
    if (rc) {
        printf( "Unable to open file \"temp\"\n" );fflush(stdout);
    }
    else {
        rc = MPI_File_get_errhandler( cFile, &eh );
        rc = MPI_File_close( &cFile );
        if (rank == 0) {
            rc = MPI_File_delete( "temp", MPI_INFO_NULL );
            if (rc) {
                printf( "Unable to delete file \"temp\"\n" );fflush(stdout);
            }
        }
    }
    MPI_Finalize();
    return 0;
}