/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/* 
 *
 *   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_get_size = PMPI_File_get_size
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_File_get_size MPI_File_get_size
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_File_get_size as PMPI_File_get_size
/* end of weak pragmas */
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_File_get_size(MPI_File fh, MPI_Offset *size) __attribute__((weak,alias("PMPI_File_get_size")));
#endif

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

/*@
    MPI_File_get_size - Returns the file size

Input Parameters:
. fh - file handle (handle)

Output Parameters:
. size - size of the file in bytes (nonnegative integer)

.N fortran
@*/
int MPI_File_get_size(MPI_File fh, MPI_Offset *size)
{
    int error_code;
    ADIO_File adio_fh;
    ADIO_Fcntl_t *fcntl_struct;
    static char myname[] = "MPI_FILE_GET_SIZE";
#ifdef MPI_hpux
    int fl_xmpi;

    HPMP_IO_START(fl_xmpi, BLKMPIFILEGETSIZE, TRDTBLOCK, adio_fh,
		  MPI_DATATYPE_NULL, -1);
#endif /* MPI_hpux */

    adio_fh = MPIO_File_resolve(fh);

    /* --BEGIN ERROR HANDLING-- */
    MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
    if(size == NULL){
        error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
                     myname, __LINE__, MPI_ERR_ARG,
                     "**nullptr", "**nullptr %s", "size");
        goto fn_fail;
    }
    /* --END ERROR HANDLING-- */

    ADIOI_TEST_DEFERRED(adio_fh, myname, &error_code);

    fcntl_struct = (ADIO_Fcntl_t *) ADIOI_Malloc(sizeof(ADIO_Fcntl_t));
    ADIO_Fcntl(adio_fh, ADIO_FCNTL_GET_FSIZE, fcntl_struct, &error_code);
    /* --BEGIN ERROR HANDLING-- */
    if (error_code != MPI_SUCCESS)
	error_code = MPIO_Err_return_file(adio_fh, error_code);
    /* --END ERROR HANDLING-- */
    *size = fcntl_struct->fsize;
    ADIOI_Free(fcntl_struct);

#ifdef MPI_hpux
    HPMP_IO_END(fl_xmpi, adio_fh, MPI_DATATYPE_NULL, -1);
#endif /* MPI_hpux */

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