comm_connect.c

刚才是说明 现在是安装程序在 LINUX环境下进行编程的MPICH安装文件

/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
 *  (C) 2001 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

#include "mpiimpl.h"

/* -- Begin Profiling Symbol Block for routine MPI_Comm_connect */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Comm_connect = PMPI_Comm_connect
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Comm_connect  MPI_Comm_connect
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Comm_connect as PMPI_Comm_connect
#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
#define MPI_Comm_connect PMPI_Comm_connect

/* Any internal routines can go here.  Make them static if possible */
#endif

#undef FUNCNAME
#define FUNCNAME MPI_Comm_connect

/*@
   MPI_Comm_connect - connect

   Input Arguments:
+  char *port_name - port name
.  MPI_Info info - info
.  int root - root
-  MPI_Comm comm - communicator

   Output Arguments:
.  MPI_Comm *newcomm - new communicator

   Notes:

.N Fortran

.N Errors
.N MPI_SUCCESS
.N ... others
@*/
int MPI_Comm_connect(char *port_name, MPI_Info info, int root, MPI_Comm comm, MPI_Comm *newcomm)
{
    static const char FCNAME[] = "MPI_Comm_connect";
    int mpi_errno = MPI_SUCCESS;
    MPID_Comm *comm_ptr = NULL;
    MPID_Comm *newcomm_ptr = NULL;
    MPID_Info *info_ptr = NULL;
    MPID_MPI_STATE_DECL(MPID_STATE_MPI_COMM_CONNECT);

    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_COMM_CONNECT);
    /* Get handles to MPI objects. */
    MPID_Comm_get_ptr( comm, comm_ptr );
    MPID_Info_get_ptr( info, info_ptr );
#   ifdef HAVE_ERROR_CHECKING
    {
        MPID_BEGIN_ERROR_CHECKS;
        {
            if (MPIR_Process.initialized != MPICH_WITHIN_MPI) {
                mpi_errno = MPIR_Err_create_code( MPI_ERR_OTHER,
                            "**initialized", 0 );
            }
            /* Validate comm_ptr */
            MPID_Comm_valid_ptr( comm_ptr, mpi_errno );
	    MPID_Info_valid_ptr( info_ptr, mpi_errno );
	    /* If comm_ptr is not value, it will be reset to null */
            if (mpi_errno) {
                MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_COMM_CONNECT);
                return MPIR_Err_return_comm( comm_ptr, FCNAME, mpi_errno );
            }
        }
        MPID_END_ERROR_CHECKS;
    }
#   endif /* HAVE_ERROR_CHECKING */

    MPID_Comm_connect(port_name, info_ptr, root, comm_ptr, &newcomm_ptr);
    /* *newcomm = MPID_Comm_ptr_to_MPI_Comm(newcomm_ptr); */

    MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_COMM_CONNECT);
    return MPI_SUCCESS;
}