root/ompi/mpi/c/file_seek_shared.c

DEFINITIONS

1. MPI_File_seek_shared

   1 /*
   2  * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
   3  *                         University Research and Technology
   4  *                         Corporation.  All rights reserved.
   5  * Copyright (c) 2004-2005 The University of Tennessee and The University
   6  *                         of Tennessee Research Foundation.  All rights
   7  *                         reserved.
   8  * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
   9  *                         University of Stuttgart.  All rights reserved.
  10  * Copyright (c) 2004-2005 The Regents of the University of California.
  11  *                         All rights reserved.
  12  * Copyright (c) 2008      Sun Microsystems, Inc.  All rights reserved.
  13  * Copyright (c) 2015      Research Organization for Information Science
  14  *                         and Technology (RIST). All rights reserved.
  15  * $COPYRIGHT$
  16  *
  17  * Additional copyrights may follow
  18  *
  19  * $HEADER$
  20  */
  21 
  22 #include "ompi_config.h"
  23 
  24 #include "ompi/mpi/c/bindings.h"
  25 #include "ompi/runtime/params.h"
  26 #include "ompi/errhandler/errhandler.h"
  27 #include "ompi/file/file.h"
  28 
  29 #if OMPI_BUILD_MPI_PROFILING
  30 #if OPAL_HAVE_WEAK_SYMBOLS
  31 #pragma weak MPI_File_seek_shared = PMPI_File_seek_shared
  32 #endif
  33 #define MPI_File_seek_shared PMPI_File_seek_shared
  34 #endif
  35 
  36 static const char FUNC_NAME[] = "MPI_File_seek_shared";
  37 
  38 
  39 int MPI_File_seek_shared(MPI_File fh, MPI_Offset offset, int whence)
  40 {
  41     int rc;
  42 
  43     if (MPI_PARAM_CHECK) {
  44         rc = MPI_SUCCESS;
  45         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  46         if (ompi_file_invalid(fh)) {
  47             rc = MPI_ERR_FILE;
  48             fh = MPI_FILE_NULL;
  49         } else if (MPI_SEEK_SET != whence && MPI_SEEK_CUR != whence &&
  50                    MPI_SEEK_END != whence) {
  51             rc = MPI_ERR_ARG;
  52         }
  53         OMPI_ERRHANDLER_CHECK(rc, fh, rc, FUNC_NAME);
  54     }
  55 
  56     OPAL_CR_ENTER_LIBRARY();
  57 
  58     /* Call the back-end io component function */
  59 
  60     switch (fh->f_io_version) {
  61     case MCA_IO_BASE_V_2_0_0:
  62         rc = fh->f_io_selected_module.v2_0_0.
  63             io_module_file_seek_shared(fh, offset, whence);
  64         break;
  65 
  66     default:
  67         rc = MPI_ERR_INTERN;
  68         break;
  69     }
  70 
  71     /* All done */
  72 
  73     OMPI_ERRHANDLER_RETURN(rc, fh, rc, FUNC_NAME);
  74 }