2004-01-30 00:42:40 +03:00
|
|
|
/*
|
|
|
|
* $HEADERS$
|
|
|
|
*/
|
2004-06-07 19:33:53 +04:00
|
|
|
#include "ompi_config.h"
|
2004-01-30 00:42:40 +03:00
|
|
|
#include <stdio.h>
|
|
|
|
|
|
|
|
#include "mpi.h"
|
2004-03-17 21:45:16 +03:00
|
|
|
#include "mpi/c/bindings.h"
|
2004-06-29 04:02:25 +04:00
|
|
|
#include "mca/coll/coll.h"
|
|
|
|
#include "errhandler/errhandler.h"
|
|
|
|
#include "communicator/communicator.h"
|
|
|
|
#include "op/op.h"
|
2004-01-30 00:42:40 +03:00
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
|
2004-01-30 00:42:40 +03:00
|
|
|
#pragma weak MPI_Scan = PMPI_Scan
|
|
|
|
#endif
|
|
|
|
|
2004-06-07 19:33:53 +04:00
|
|
|
#if OMPI_PROFILING_DEFINES
|
2004-04-20 22:50:43 +04:00
|
|
|
#include "mpi/c/profile/defines.h"
|
|
|
|
#endif
|
|
|
|
|
2004-07-30 06:58:53 +04:00
|
|
|
static const char FUNC_NAME[] = "MPI_Scan";
|
2004-06-29 04:02:25 +04:00
|
|
|
|
|
|
|
|
2004-01-30 00:42:40 +03:00
|
|
|
int MPI_Scan(void *sendbuf, void *recvbuf, int count,
|
2004-06-29 04:02:25 +04:00
|
|
|
MPI_Datatype datatype, MPI_Op op, MPI_Comm comm)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (MPI_PARAM_CHECK) {
|
2004-07-30 23:14:55 +04:00
|
|
|
err = MPI_SUCCESS;
|
2004-06-29 04:02:25 +04:00
|
|
|
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
|
|
|
|
if (ompi_comm_invalid(comm)) {
|
|
|
|
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
|
|
|
|
FUNC_NAME);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* No intercommunicators allowed! (MPI does not define
|
|
|
|
MPI_SCAN on intercommunicators) */
|
|
|
|
|
2004-07-30 23:14:55 +04:00
|
|
|
else if (OMPI_COMM_IS_INTER(comm)) {
|
|
|
|
err = MPI_ERR_COMM;
|
2004-06-29 04:02:25 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Unrooted operation; checks for all ranks */
|
|
|
|
|
2004-07-30 23:14:55 +04:00
|
|
|
else if (MPI_OP_NULL == op) {
|
|
|
|
err = MPI_ERR_OP;
|
|
|
|
} else if (ompi_op_is_intrinsic(op) &&
|
|
|
|
datatype->id < DT_MAX_PREDEFINED &&
|
|
|
|
-1 == ompi_op_ddt_map[datatype->id]) {
|
|
|
|
err = MPI_ERR_OP;
|
|
|
|
} else {
|
|
|
|
OMPI_CHECK_DATATYPE_FOR_SEND(err, datatype, count);
|
2004-06-29 04:02:25 +04:00
|
|
|
}
|
2004-07-30 23:14:55 +04:00
|
|
|
OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
|
2004-06-29 04:02:25 +04:00
|
|
|
}
|
|
|
|
|
2004-10-04 23:25:40 +04:00
|
|
|
/* If everyone supplied count == 0, we can just return */
|
|
|
|
|
|
|
|
if (0 == count) {
|
|
|
|
return MPI_SUCCESS;
|
|
|
|
}
|
|
|
|
|
2004-06-29 04:02:25 +04:00
|
|
|
/* Call the coll component to actually perform the allgather */
|
|
|
|
|
|
|
|
err = comm->c_coll.coll_scan(sendbuf, recvbuf, count,
|
|
|
|
datatype, op, comm);
|
|
|
|
OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
|
2004-01-30 00:42:40 +03:00
|
|
|
}
|