/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpiimpl.h"

/* -- Begin Profiling Symbol Block for routine MPI_Comm_accept */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Comm_accept = PMPI_Comm_accept

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Comm_accept  MPI_Comm_accept

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Comm_accept as PMPI_Comm_accept

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Comm_accept(const char *port_name, MPI_Info info, int root, MPI_Comm comm,

                    MPI_Comm * newcomm) __attribute__ ((weak, alias("PMPI_Comm_accept")));

#endif

/* -- End Profiling Symbol Block */

/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build

   the MPI routines */

#ifndef MPICH_MPI_FROM_PMPI

#undef MPI_Comm_accept

#define MPI_Comm_accept PMPI_Comm_accept

#undef FUNCNAME

#define FUNCNAME MPIR_Comm_accept_impl

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

int MPIR_Comm_accept_impl(const char *port_name, MPIR_Info * info_ptr, int root,

                          MPIR_Comm * comm_ptr, MPIR_Comm ** newcomm_ptr)

{

    return MPID_Comm_accept(port_name, info_ptr, root, comm_ptr, newcomm_ptr);

}

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Comm_accept

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

   MPI_Comm_accept - Accept a request to form a new intercommunicator

Input Parameters:

+ port_name - port name (string, used only on root)

. info - implementation-dependent information (handle, used only on root)

. root - rank in comm of root node (integer)

- comm - intracommunicator over which call is collective (handle)

Output Parameters:

. newcomm - intercommunicator with client as remote group (handle)

.N ThreadSafe

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_INFO

.N MPI_ERR_COMM

@*/

int MPI_Comm_accept(const char *port_name, MPI_Info info, int root, MPI_Comm comm,

                    MPI_Comm * newcomm)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_Comm *comm_ptr = NULL;

    MPIR_Comm *newcomm_ptr = NULL;

    MPIR_Info *info_ptr = NULL;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_COMM_ACCEPT);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_COMM_ACCEPT);

    /* Validate parameters, especially handles needing to be converted */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_COMM(comm, mpi_errno);

            MPIR_ERRTEST_INFO_OR_NULL(info, mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif

    /* Convert MPI object handles to object pointers */

    MPIR_Comm_get_ptr(comm, comm_ptr);

    MPIR_Info_get_ptr(info, info_ptr);

    /* Validate parameters and objects (post conversion) */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            /* Validate comm_ptr */

            MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);

            if (mpi_errno)

                goto fn_fail;

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

    /* ... body of routine ...  */

    mpi_errno = MPIR_Comm_accept_impl(port_name, info_ptr, root, comm_ptr, &newcomm_ptr);

    if (mpi_errno)

        goto fn_fail;

    MPIR_OBJ_PUBLISH_HANDLE(*newcomm, newcomm_ptr->handle);

    /* ... end of body of routine ... */

  fn_exit:

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_COMM_ACCEPT);

    MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    return mpi_errno;

  fn_fail:

    /* --BEGIN ERROR HANDLING-- */

#ifdef HAVE_ERROR_CHECKING

    {

        mpi_errno =

            MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,

                                 "**mpi_comm_accept", "**mpi_comm_accept %s %I %d %C %p", port_name,

                                 info, root, comm, newcomm);

    }

#endif

    mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}