text: /* -*- 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_read_all_begin = PMPI_File_read_all_begin
  #elif defined(HAVE_PRAGMA_HP_SEC_DEF)
  #pragma _HP_SECONDARY_DEF PMPI_File_read_all_begin MPI_File_read_all_begin
  #elif defined(HAVE_PRAGMA_CRI_DUP)
  #pragma _CRI duplicate MPI_File_read_all_begin as PMPI_File_read_all_begin
  /* end of weak pragmas */
  #elif defined(HAVE_WEAK_ATTRIBUTE)
  int MPI_File_read_all_begin(MPI_File fh, void *buf, int count, MPI_Datatype datatype)
      __attribute__ ((weak, alias("PMPI_File_read_all_begin")));
  #endif
  
  /* Include mapping from MPI->PMPI */
  #define MPIO_BUILD_PROFILING
  #include "mpioprof.h"
  #endif
  
  /*@
      MPI_File_read_all_begin - Begin a split collective read using individual file pointer
  
  Input Parameters:
  . fh - file handle (handle)
  . count - number of elements in buffer (nonnegative integer)
  . datatype - datatype of each buffer element (handle)
  
  Output Parameters:
  . buf - initial address of buffer (choice)
  
  .N fortran
  @*/
  int MPI_File_read_all_begin(MPI_File fh, void *buf, int count, MPI_Datatype datatype)
  {
      int error_code;
      static char myname[] = "MPI_FILE_READ_ALL_BEGIN";
  
      error_code = MPIOI_File_read_all_begin(fh, (MPI_Offset) 0,
                                             ADIO_INDIVIDUAL, buf, count, datatype, myname);
  
      return error_code;
  }
  
  /* prevent multiple definitions of this routine */
  #ifdef MPIO_BUILD_PROFILING
  int MPIOI_File_read_all_begin(MPI_File fh,
                                MPI_Offset offset,
                                int file_ptr_type,
                                void *buf, int count, MPI_Datatype datatype, char *myname)
  {
      int error_code;
      MPI_Count datatype_size;
      ADIO_File adio_fh;
      void *xbuf = NULL, *e32_buf = NULL;
  
      ROMIO_THREAD_CS_ENTER();
  
      adio_fh = MPIO_File_resolve(fh);
  
      /* --BEGIN ERROR HANDLING-- */
      MPIO_CHECK_FILE_HANDLE(adio_fh, myname, error_code);
      MPIO_CHECK_COUNT(adio_fh, count, myname, error_code);
      MPIO_CHECK_DATATYPE(adio_fh, datatype, myname, error_code);
  
      if (file_ptr_type == ADIO_EXPLICIT_OFFSET && offset < 0) {
          error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
                                            myname, __LINE__, MPI_ERR_ARG, "**iobadoffset", 0);
          error_code = MPIO_Err_return_file(adio_fh, error_code);
          goto fn_exit;
      }
      /* --END ERROR HANDLING-- */
  
      MPI_Type_size_x(datatype, &datatype_size);
  
      /* --BEGIN ERROR HANDLING-- */
      MPIO_CHECK_INTEGRAL_ETYPE(adio_fh, count, datatype_size, myname, error_code);
      MPIO_CHECK_READABLE(adio_fh, myname, error_code);
      MPIO_CHECK_NOT_SEQUENTIAL_MODE(adio_fh, myname, error_code);
  
      if (adio_fh->split_coll_count) {
          error_code = MPIO_Err_create_code(MPI_SUCCESS, MPIR_ERR_RECOVERABLE,
                                            myname, __LINE__, MPI_ERR_IO, "**iosplitcoll", 0);
          error_code = MPIO_Err_return_file(adio_fh, error_code);
          goto fn_exit;
      }
      MPIO_CHECK_COUNT_SIZE(adio_fh, count, datatype_size, myname, error_code);
      /* --END ERROR HANDLING-- */
  
      adio_fh->split_coll_count = 1;
  
      xbuf = buf;
      if (adio_fh->is_external32) {
          MPI_Aint e32_size = 0;
          error_code = MPIU_datatype_full_size(datatype, &e32_size);
          if (error_code != MPI_SUCCESS)
              goto fn_exit;
  
          e32_buf = ADIOI_Malloc(e32_size * count);
          xbuf = e32_buf;
      }
  
      ADIO_ReadStridedColl(adio_fh, xbuf, count, datatype, file_ptr_type,
                           offset, &adio_fh->split_status, &error_code);
  
      /* --BEGIN ERROR HANDLING-- */
      if (error_code != MPI_SUCCESS)
          error_code = MPIO_Err_return_file(adio_fh, error_code);
      /* --END ERROR HANDLING-- */
  
      if (e32_buf != NULL) {
          error_code = MPIU_read_external32_conversion_fn(buf, datatype, count, e32_buf);
          ADIOI_Free(e32_buf);
      }
  
    fn_exit:
      ROMIO_THREAD_CS_EXIT();
  
      return error_code;
  }
  #endif
  