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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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*
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* (C) 2001 by Argonne National Laboratory.
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* See COPYRIGHT in top-level directory.
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*/
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#include "mpiimpl.h"
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/* -- Begin Profiling Symbol Block for routine MPI_Cart_get */
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPI_Cart_get = PMPI_Cart_get
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPI_Cart_get MPI_Cart_get
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPI_Cart_get as PMPI_Cart_get
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#elif defined(HAVE_WEAK_ATTRIBUTE)
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int MPI_Cart_get(MPI_Comm comm, int maxdims, int dims[], int periods[], int coords[])
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__attribute__ ((weak, alias("PMPI_Cart_get")));
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#endif
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/* -- End Profiling Symbol Block */
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/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
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the MPI routines */
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#ifndef MPICH_MPI_FROM_PMPI
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#undef MPI_Cart_get
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#define MPI_Cart_get PMPI_Cart_get
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#endif
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#undef FUNCNAME
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#define FUNCNAME MPI_Cart_get
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#undef FCNAME
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#define FCNAME MPL_QUOTE(FUNCNAME)
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/*@
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MPI_Cart_get - Retrieves Cartesian topology information associated with a
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communicator
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Input Parameters:
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+ comm - communicator with cartesian structure (handle)
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- maxdims - length of vectors 'dims', 'periods', and 'coords'
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in the calling program (integer)
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Output Parameters:
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+ dims - number of processes for each cartesian dimension (array of integer)
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. periods - periodicity (true/false) for each cartesian dimension
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(array of logical)
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- coords - coordinates of calling process in cartesian structure
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(array of integer)
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.N ThreadSafe
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.N Fortran
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.N Errors
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.N MPI_SUCCESS
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.N MPI_ERR_TOPOLOGY
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.N MPI_ERR_COMM
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.N MPI_ERR_ARG
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@*/
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int MPI_Cart_get(MPI_Comm comm, int maxdims, int dims[], int periods[], int coords[])
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{
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int mpi_errno = MPI_SUCCESS;
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MPIR_Comm *comm_ptr = NULL;
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MPIR_Topology *cart_ptr;
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int i, n, *vals;
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MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_CART_GET);
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MPIR_ERRTEST_INITIALIZED_ORDIE();
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MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_CART_GET);
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/* Validate parameters, especially handles needing to be converted */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPIR_ERRTEST_COMM(comm, mpi_errno);
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif
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/* Convert MPI object handles to object pointers */
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MPIR_Comm_get_ptr(comm, comm_ptr);
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/* Validate parameters and objects (post conversion) */
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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/* Validate comm_ptr */
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MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, TRUE);
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/* If comm_ptr is not valid, it will be reset to null */
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if (mpi_errno)
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goto fn_fail;
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif /* HAVE_ERROR_CHECKING */
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/* ... body of routine ... */
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cart_ptr = MPIR_Topology_get(comm_ptr);
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#ifdef HAVE_ERROR_CHECKING
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{
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MPID_BEGIN_ERROR_CHECKS;
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{
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MPIR_ERR_CHKANDJUMP((!cart_ptr ||
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cart_ptr->kind != MPI_CART), mpi_errno, MPI_ERR_TOPOLOGY,
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"**notcarttopo");
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MPIR_ERR_CHKANDJUMP2((cart_ptr->topo.cart.ndims > maxdims), mpi_errno, MPI_ERR_ARG,
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"**dimsmany", "**dimsmany %d %d", cart_ptr->topo.cart.ndims,
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maxdims);
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if (cart_ptr->topo.cart.ndims) {
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MPIR_ERRTEST_ARGNULL(dims, "dims", mpi_errno);
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MPIR_ERRTEST_ARGNULL(periods, "periods", mpi_errno);
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MPIR_ERRTEST_ARGNULL(coords, "coords", mpi_errno);
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}
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}
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MPID_END_ERROR_CHECKS;
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}
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#endif /* HAVE_ERROR_CHECKING */
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n = cart_ptr->topo.cart.ndims;
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vals = cart_ptr->topo.cart.dims;
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for (i = 0; i < n; i++)
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*dims++ = *vals++;
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/* Get periods */
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vals = cart_ptr->topo.cart.periodic;
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for (i = 0; i < n; i++)
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*periods++ = *vals++;
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/* Get coords */
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vals = cart_ptr->topo.cart.position;
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for (i = 0; i < n; i++)
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*coords++ = *vals++;
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/* ... end of body of routine ... */
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#ifdef HAVE_ERROR_CHECKING
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fn_exit:
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#endif
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MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_CART_GET);
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return mpi_errno;
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#ifdef HAVE_ERROR_CHECKING
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fn_fail:
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/* --BEGIN ERROR HANDLING-- */
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{
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mpi_errno =
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MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
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"**mpi_cart_get", "**mpi_cart_get %C %d %p %p %p", comm, maxdims,
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dims, periods, coords);
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}
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mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
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goto fn_exit;
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/* --END ERROR HANDLING-- */
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#endif
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}
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