root/ompi/mpiext/pcollreq/c/allgather_init.c

DEFINITIONS

1. MPIX_Allgather_init

   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
   2 /*
   3  * Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
   4  *                         University Research and Technology
   5  *                         Corporation.  All rights reserved.
   6  * Copyright (c) 2004-2018 The University of Tennessee and The University
   7  *                         of Tennessee Research Foundation.  All rights
   8  *                         reserved.
   9  * Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
  10  *                         University of Stuttgart.  All rights reserved.
  11  * Copyright (c) 2004-2005 The Regents of the University of California.
  12  *                         All rights reserved.
  13  * Copyright (c) 2007      Cisco Systems, Inc.  All rights reserved.
  14  * Copyright (c) 2012      Oak Ridge National Laboratory. All rights reserved.
  15  * Copyright (c) 2013      Los Alamos National Security, LLC.  All rights
  16  *                         reserved.
  17  * Copyright (c) 2015-2018 Research Organization for Information Science
  18  *                         and Technology (RIST). All rights reserved.
  19  * $COPYRIGHT$
  20  *
  21  * Additional copyrights may follow
  22  *
  23  * $HEADER$
  24  */
  25 
  26 #include "ompi_config.h"
  27 #include <stdio.h>
  28 
  29 #include "ompi/mpi/c/bindings.h"
  30 #include "ompi/runtime/params.h"
  31 #include "ompi/communicator/communicator.h"
  32 #include "ompi/errhandler/errhandler.h"
  33 #include "ompi/datatype/ompi_datatype.h"
  34 #include "ompi/memchecker.h"
  35 #include "ompi/mpiext/pcollreq/c/mpiext_pcollreq_c.h"
  36 #include "ompi/runtime/ompi_spc.h"
  37 
  38 #if OMPI_BUILD_MPI_PROFILING
  39 #if OPAL_HAVE_WEAK_SYMBOLS
  40 #pragma weak MPIX_Allgather_init = PMPIX_Allgather_init
  41 #endif
  42 #define MPIX_Allgather_init PMPIX_Allgather_init
  43 #endif
  44 
  45 static const char FUNC_NAME[] = "MPIX_Allgather_init";
  46 
  47 
  48 int MPIX_Allgather_init(const void *sendbuf, int sendcount, MPI_Datatype sendtype,
  49                    void *recvbuf, int recvcount, MPI_Datatype recvtype,
  50                    MPI_Comm comm, MPI_Info info, MPI_Request *request)
  51 {
  52     int err;
  53 
  54     SPC_RECORD(OMPI_SPC_ALLGATHER_INIT, 1);
  55 
  56     MEMCHECKER(
  57         int rank;
  58         ptrdiff_t ext;
  59 
  60         rank = ompi_comm_rank(comm);
  61         ompi_datatype_type_extent(recvtype, &ext);
  62 
  63         memchecker_datatype(recvtype);
  64         memchecker_comm(comm);
  65         /* check whether the actual send buffer is defined. */
  66         if (MPI_IN_PLACE == sendbuf) {
  67             memchecker_call(&opal_memchecker_base_isdefined,
  68                             (char *)(recvbuf)+rank*ext,
  69                             recvcount, recvtype);
  70         } else {
  71             memchecker_datatype(sendtype);
  72             memchecker_call(&opal_memchecker_base_isdefined, sendbuf, sendcount, sendtype);
  73         }
  74         /* check whether the receive buffer is addressable. */
  75         memchecker_call(&opal_memchecker_base_isaddressable, recvbuf, recvcount, recvtype);
  76     );
  77 
  78     if (MPI_PARAM_CHECK) {
  79 
  80         /* Unrooted operation -- same checks for all ranks on both
  81            intracommunicators and intercommunicators */
  82 
  83         err = MPI_SUCCESS;
  84         OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
  85         if (ompi_comm_invalid(comm)) {
  86           OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_COMM, FUNC_NAME);
  87         } else if (MPI_DATATYPE_NULL == recvtype || NULL == recvtype) {
  88           err = MPI_ERR_TYPE;
  89         } else if (recvcount < 0) {
  90           err = MPI_ERR_COUNT;
  91         } else if ((MPI_IN_PLACE == sendbuf && OMPI_COMM_IS_INTER(comm)) ||
  92                    MPI_IN_PLACE == recvbuf) {
  93           return OMPI_ERRHANDLER_INVOKE(comm, MPI_ERR_ARG, FUNC_NAME);
  94         } else if (MPI_IN_PLACE != sendbuf) {
  95             OMPI_CHECK_DATATYPE_FOR_SEND(err, sendtype, sendcount);
  96         }
  97         OMPI_ERRHANDLER_CHECK(err, comm, err, FUNC_NAME);
  98     }
  99 
 100     OPAL_CR_ENTER_LIBRARY();
 101 
 102     /* Invoke the coll component to perform the back-end operation */
 103     err = comm->c_coll->coll_allgather_init(sendbuf, sendcount, sendtype,
 104                                             recvbuf, recvcount, recvtype, comm,
 105                                             info, request, comm->c_coll->coll_allgather_init_module);
 106 
 107     OMPI_ERRHANDLER_RETURN(err, comm, err, FUNC_NAME);
 108 }