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/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2008 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/runtime/params.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/datatype/ompi_datatype.h"
#include "ompi/file/file.h"
#include "ompi/mca/io/io.h"
#include "ompi/mca/io/base/io_base_request.h"
#include "ompi/memchecker.h"
#if OMPI_BUILD_MPI_PROFILING
#if OPAL_HAVE_WEAK_SYMBOLS
#pragma weak MPI_File_iread_at = PMPI_File_iread_at
#endif
#define MPI_File_iread_at PMPI_File_iread_at
#endif
static const char FUNC_NAME[] = "MPI_File_iread_at";
int MPI_File_iread_at(MPI_File fh, MPI_Offset offset, void *buf,
int count, MPI_Datatype datatype, MPI_Request *request)
{
int rc;
MEMCHECKER(
memchecker_datatype(datatype);
);
if (MPI_PARAM_CHECK) {
rc = MPI_SUCCESS;
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (ompi_file_invalid(fh)) {
fh = MPI_FILE_NULL;
rc = MPI_ERR_FILE;
} else if (count < 0) {
rc = MPI_ERR_COUNT;
} else if (NULL == request) {
rc = MPI_ERR_REQUEST;
} else {
OMPI_CHECK_DATATYPE_FOR_RECV(rc, datatype, count);
}
OMPI_ERRHANDLER_CHECK(rc, fh, rc, FUNC_NAME);
}
/* Call the back-end io component function */
switch (fh->f_io_version) {
case MCA_IO_BASE_V_2_0_0:
rc = fh->f_io_selected_module.v2_0_0.
io_module_file_iread_at(fh, offset, buf, count, datatype,
request);
break;
default:
rc = MPI_ERR_INTERN;
break;
}
/* All done */
OMPI_ERRHANDLER_RETURN(rc, fh, rc, FUNC_NAME);
}
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