root/ompi/mca/io/romio321/romio/mpi-io/read_atall.c

DEFINITIONS

1. MPI_File_read_at_all

   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
   2 /* 
   3  *
   4  *   Copyright (C) 1997 University of Chicago. 
   5  *   See COPYRIGHT notice in top-level directory.
   6  */
   7 
   8 #include "mpioimpl.h"
   9 
  10 #ifdef HAVE_WEAK_SYMBOLS
  11 
  12 #if defined(HAVE_PRAGMA_WEAK)
  13 #pragma weak MPI_File_read_at_all = PMPI_File_read_at_all
  14 #elif defined(HAVE_PRAGMA_HP_SEC_DEF)
  15 #pragma _HP_SECONDARY_DEF PMPI_File_read_at_all MPI_File_read_at_all
  16 #elif defined(HAVE_PRAGMA_CRI_DUP)
  17 #pragma _CRI duplicate MPI_File_read_at_all as PMPI_File_read_at_all
  18 /* end of weak pragmas */
  19 #elif defined(HAVE_WEAK_ATTRIBUTE)
  20 int MPI_File_read_at_all(MPI_File fh, MPI_Offset offset, void * buf, int count,
  21                          MPI_Datatype datatype, MPI_Status *status)
  22     __attribute__((weak,alias("PMPI_File_read_at_all")));
  23 #endif
  24 
  25 /* Include mapping from MPI->PMPI */
  26 #define MPIO_BUILD_PROFILING
  27 #include "mpioprof.h"
  28 #endif
  29 
  30 /* status object not filled currently */
  31 
  32 /*@
  33     MPI_File_read_at_all - Collective read using explicit offset
  34 
  35 Input Parameters:
  36 . fh - file handle (handle)
  37 . offset - file offset (nonnegative integer)
  38 . count - number of elements in buffer (nonnegative integer)
  39 . datatype - datatype of each buffer element (handle)
  40 
  41 Output Parameters:
  42 . buf - initial address of buffer (choice)
  43 . status - status object (Status)
  44 
  45 .N fortran
  46 @*/
  47 int MPI_File_read_at_all(MPI_File fh, MPI_Offset offset, void *buf,
  48                          int count, MPI_Datatype datatype, 
  49                          MPI_Status *status)
  50 {
  51     int error_code;
  52     static char myname[] = "MPI_FILE_IREAD_AT";
  53 #ifdef MPI_hpux
  54     int fl_xmpi;
  55 
  56     HPMP_IO_START(fl_xmpi, BLKMPIFILEREADATALL, TRDTBLOCK, fh, datatype,
  57                   count);
  58 #endif /* MPI_hpux */
  59 
  60     error_code = MPIOI_File_read_all(fh, offset, ADIO_EXPLICIT_OFFSET, buf,
  61                                      count, datatype, myname, status);
  62 
  63 #ifdef MPI_hpux
  64     HPMP_IO_END(fl_xmpi, fh, datatype, count);
  65 #endif /* MPI_hpux */
  66 
  67     return error_code;
  68 }