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/*
* Copyright (c) 2001-2002 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
*
* $Id: start.c,v 6.5 2002/12/11 19:15:13 jsquyres Exp $
*
* Function: - start communication request
* Accepts: - ptr to request
* Returns: - MPI_SUCCESS or error code
*/
#include <blktype.h>
#include <mpi.h>
#include <mpisys.h>
#include <rpisys.h>
/*
* external functions
*/
extern int lam_errfunc();
extern void lam_initerr();
extern void lam_resetfunc();
extern void lam_setfunc();
/*@
MPI_Start - Initiates a communication with a persistent request handle
Input Parameter:
. req - communication request (handle)
Notes:
This function starts a communication that was previously initialized
with any of the 'MPI_*_init' functions.
.N fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_REQUEST
.seealso MPI_Bsend_init, MPI_Request_free, MPI_Rsend_init, MPI_Send_init, MPI_Ssend_init, MPI_Startall, MPI_Test, MPI_Testall, MPI_Testany, MPI_Testsome, MPI_Wait, MPI_Waitall, MPI_Waitany, MPI_Waitsome
.N ACK
@*/
int MPI_Start(MPI_Request *req)
{
int err; /* error code */
lam_initerr();
lam_setfunc(BLKMPISTART);
if (req == 0) {
return(lam_errfunc(MPI_COMM_WORLD,
BLKMPISTART, lam_mkerr(MPI_ERR_ARG, EINVAL)));
}
if (*req == MPI_REQUEST_NULL) {
return(lam_errfunc(MPI_COMM_WORLD,
BLKMPISTART, lam_mkerr(MPI_ERR_REQUEST, EINVAL)));
}
err = MPI_Startall(1, req);
if (err != MPI_SUCCESS) {
return(lam_errfunc((*req)->rq_comm, BLKMPISTART, err));
}
lam_resetfunc(BLKMPISTART);
return(MPI_SUCCESS);
}
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