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libs/ck-libs/ampi/romio/mpi-io/close.c

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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/* 
 *
 *   Copyright (C) 1997 University of Chicago. 
 *   See COPYRIGHT notice in top-level directory.
 */

#include "mpioimpl.h"

#ifdef HAVE_WEAK_SYMBOLS

#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_File_close = PMPI_File_close
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_File_close MPI_File_close
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_File_close as PMPI_File_close
/* end of weak pragmas */
#endif

/* Include mapping from MPI->PMPI */
#define MPIO_BUILD_PROFILING
#include "mpioprof.h"
#endif

/*@
    MPI_File_close - Closes a file

Input Parameters:
. fh - file handle (handle)

.N fortran
@*/
int MPI_File_close(MPI_File *mpi_fh)
{
    int error_code;
    ADIO_File fh;
    static char myname[] = "MPI_FILE_CLOSE";
#ifdef MPI_hpux
    int fl_xmpi;

    HPMP_IO_WSTART(fl_xmpi, BLKMPIFILECLOSE, TRDTBLOCK, *fh);
#endif /* MPI_hpux */

    MPIU_THREAD_CS_ENTER(ALLFUNC,);

    fh = MPIO_File_resolve(*mpi_fh);

    /* --BEGIN ERROR HANDLING-- */
    MPIO_CHECK_FILE_HANDLE(fh, myname, error_code);
    /* --END ERROR HANDLING-- */

    if (ADIO_Feature(fh, ADIO_SHARED_FP)) 
    {
    ADIOI_Free((fh)->shared_fp_fname);
    /* POSIX semantics say a deleted file remains available until all
     * processes close the file.  But since when was NFS posix-compliant?
     */
    if (!ADIO_Feature(fh, ADIO_UNLINK_AFTER_CLOSE)) {
        MPI_Barrier((fh)->comm);
    }
    if ((fh)->shared_fp_fd != ADIO_FILE_NULL) {
        MPI_File *mpi_fh_shared = &(fh->shared_fp_fd);
        ADIO_Close((fh)->shared_fp_fd, &error_code);
            MPIO_File_free(mpi_fh_shared);
        /* --BEGIN ERROR HANDLING-- */
        if (error_code != MPI_SUCCESS) goto fn_fail;
        /* --END ERROR HANDLING-- */
    }
    }

    /* Because ROMIO expects the MPI library to provide error handler management
     * routines but it doesn't ever participate in MPI_File_close, we have to
     * somehow inform the MPI library that we no longer hold a reference to any
     * user defined error handler.  We do this by setting the errhandler at this
     * point to MPI_ERRORS_RETURN. */

    #if 0
    error_code = PMPI_File_set_errhandler(*mpi_fh, MPI_ERRORS_RETURN);
    if (error_code != MPI_SUCCESS) goto fn_fail;
    #endif

    ADIO_Close(fh, &error_code);
    MPIO_File_free(mpi_fh);
    /* --BEGIN ERROR HANDLING-- */
    if (error_code != MPI_SUCCESS) goto fn_fail;
    /* --END ERROR HANDLING-- */

#ifdef MPI_hpux
    HPMP_IO_WEND(fl_xmpi);
#endif /* MPI_hpux */

fn_exit:
    MPIU_THREAD_CS_EXIT(ALLFUNC,);
    return error_code;
fn_fail:
    /* --BEGIN ERROR HANDLING-- */
    error_code = MPIO_Err_return_file(fh, error_code);
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}

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