2004-01-30 00:42:40 +03:00
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/*
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* $HEADERS$
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*/
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2004-06-07 19:33:53 +04:00
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#include "ompi_config.h"
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2004-01-30 00:42:40 +03:00
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#include <stdio.h>
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#include "mpi.h"
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2004-03-17 21:45:16 +03:00
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#include "mpi/c/bindings.h"
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2004-06-29 04:02:25 +04:00
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#include "mca/coll/coll.h"
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#include "errhandler/errhandler.h"
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#include "communicator/communicator.h"
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2004-01-30 00:42:40 +03:00
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2004-06-07 19:33:53 +04:00
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#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
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2004-01-30 00:42:40 +03:00
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#pragma weak MPI_Scatterv = PMPI_Scatterv
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#endif
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2004-06-07 19:33:53 +04:00
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#if OMPI_PROFILING_DEFINES
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2004-04-20 22:50:43 +04:00
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#include "mpi/c/profile/defines.h"
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#endif
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2004-06-29 04:02:25 +04:00
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static char FUNC_NAME[] = "MPI_Scatterv";
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2004-01-30 00:42:40 +03:00
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int MPI_Scatterv(void *sendbuf, int *sendcounts, int *displs,
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MPI_Datatype sendtype, void *recvbuf, int recvcount,
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2004-06-29 04:02:25 +04:00
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MPI_Datatype recvtype, int root, MPI_Comm comm)
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{
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int i, size, err;
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if (MPI_PARAM_CHECK) {
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OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
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if (ompi_comm_invalid(comm)) {
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return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM,
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FUNC_NAME);
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}
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/* Errors for intracommunicators */
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if (OMPI_COMM_IS_INTRA(comm)) {
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/* Errors for all ranks */
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if ((root >= ompi_comm_size(comm)) || (root < 0)) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ROOT, FUNC_NAME);
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}
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if (recvcount < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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if (recvtype == MPI_DATATYPE_NULL) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
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}
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/* Errors for the root. Some of these could have been
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combined into compound if statements above, but since
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this whole section can be compiled out (or turned off at
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run time) for efficiency, it's more clear to separate
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them out into individual tests. */
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if (ompi_comm_rank(comm) == root) {
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if (sendtype == MPI_DATATYPE_NULL) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
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}
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if (NULL == displs) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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}
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if (NULL == sendcounts) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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size = ompi_comm_size(comm);
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for (i = 0; i < size; ++i) {
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if (sendcounts[i] < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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}
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}
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}
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/* Errors for intercommunicators */
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else {
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if (! ((root >= 0 && root < ompi_comm_remote_size(comm)) ||
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root == MPI_ROOT || root == MPI_PROC_NULL)) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ROOT, FUNC_NAME);
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}
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/* Errors for the receivers */
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if (root != MPI_ROOT && root != MPI_PROC_NULL) {
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if (recvcount < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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if (recvtype == MPI_DATATYPE_NULL) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_TYPE, FUNC_NAME);
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}
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}
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/* Errors for the root. Ditto on the comment above -- these
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error checks could have been combined above, but let's
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make the code easier to read. */
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else if (MPI_ROOT == root) {
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if (NULL == displs) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
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}
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if (NULL == sendcounts) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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size = ompi_comm_size(comm);
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for (i = 0; i < size; ++i) {
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if (sendcounts[i] < 0) {
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return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_COUNT, FUNC_NAME);
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}
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}
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}
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}
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}
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/* Invoke the coll component to perform the back-end operation */
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err = comm->c_coll.coll_scatterv(sendbuf, sendcounts, displs, sendtype,
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recvbuf, recvcount, recvtype, root, comm);
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OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
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2004-01-30 00:42:40 +03:00
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}
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