|
Packit Service |
c5cf8c |
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
|
|
Packit Service |
c5cf8c |
/*
|
|
Packit Service |
c5cf8c |
*
|
|
Packit Service |
c5cf8c |
* (C) 2001 by Argonne National Laboratory.
|
|
Packit Service |
c5cf8c |
* See COPYRIGHT in top-level directory.
|
|
Packit Service |
c5cf8c |
*/
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
#include "mpiimpl.h"
|
|
Packit Service |
c5cf8c |
#include "mpicomm.h"
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* -- Begin Profiling Symbol Block for routine MPI_Comm_dup */
|
|
Packit Service |
c5cf8c |
#if defined(HAVE_PRAGMA_WEAK)
|
|
Packit Service |
c5cf8c |
#pragma weak MPI_Comm_dup = PMPI_Comm_dup
|
|
Packit Service |
c5cf8c |
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
|
|
Packit Service |
c5cf8c |
#pragma _HP_SECONDARY_DEF PMPI_Comm_dup MPI_Comm_dup
|
|
Packit Service |
c5cf8c |
#elif defined(HAVE_PRAGMA_CRI_DUP)
|
|
Packit Service |
c5cf8c |
#pragma _CRI duplicate MPI_Comm_dup as PMPI_Comm_dup
|
|
Packit Service |
c5cf8c |
#elif defined(HAVE_WEAK_ATTRIBUTE)
|
|
Packit Service |
c5cf8c |
int MPI_Comm_dup(MPI_Comm comm, MPI_Comm * newcomm) __attribute__ ((weak, alias("PMPI_Comm_dup")));
|
|
Packit Service |
c5cf8c |
#endif
|
|
Packit Service |
c5cf8c |
/* -- End Profiling Symbol Block */
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
|
|
Packit Service |
c5cf8c |
the MPI routines */
|
|
Packit Service |
c5cf8c |
#ifndef MPICH_MPI_FROM_PMPI
|
|
Packit Service |
c5cf8c |
#undef MPI_Comm_dup
|
|
Packit Service |
c5cf8c |
#define MPI_Comm_dup PMPI_Comm_dup
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
#undef FUNCNAME
|
|
Packit Service |
c5cf8c |
#define FUNCNAME MPIR_Comm_dup_impl
|
|
Packit Service |
c5cf8c |
#undef FCNAME
|
|
Packit Service |
c5cf8c |
#define FCNAME MPL_QUOTE(FUNCNAME)
|
|
Packit Service |
c5cf8c |
int MPIR_Comm_dup_impl(MPIR_Comm * comm_ptr, MPIR_Comm ** newcomm_ptr)
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
int mpi_errno = MPI_SUCCESS;
|
|
Packit Service |
c5cf8c |
MPIR_Attribute *new_attributes = 0;
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* Copy attributes, executing the attribute copy functions */
|
|
Packit Service |
c5cf8c |
/* This accesses the attribute dup function through the perprocess
|
|
Packit Service |
c5cf8c |
* structure to prevent comm_dup from forcing the linking of the
|
|
Packit Service |
c5cf8c |
* attribute functions. The actual function is (by default)
|
|
Packit Service |
c5cf8c |
* MPIR_Attr_dup_list
|
|
Packit Service |
c5cf8c |
*/
|
|
Packit Service |
c5cf8c |
if (MPIR_Process.attr_dup) {
|
|
Packit Service |
c5cf8c |
mpi_errno = MPIR_Process.attr_dup(comm_ptr->handle, comm_ptr->attributes, &new_attributes);
|
|
Packit Service |
c5cf8c |
if (mpi_errno)
|
|
Packit Service |
c5cf8c |
MPIR_ERR_POP(mpi_errno);
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* Generate a new context value and a new communicator structure */
|
|
Packit Service |
c5cf8c |
/* We must use the local size, because this is compared to the
|
|
Packit Service |
c5cf8c |
* rank of the process in the communicator. For intercomms,
|
|
Packit Service |
c5cf8c |
* this must be the local size */
|
|
Packit Service |
c5cf8c |
mpi_errno = MPII_Comm_copy(comm_ptr, comm_ptr->local_size, newcomm_ptr);
|
|
Packit Service |
c5cf8c |
if (mpi_errno)
|
|
Packit Service |
c5cf8c |
MPIR_ERR_POP(mpi_errno);
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
(*newcomm_ptr)->attributes = new_attributes;
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
fn_exit:
|
|
Packit Service |
c5cf8c |
return mpi_errno;
|
|
Packit Service |
c5cf8c |
fn_fail:
|
|
Packit Service |
c5cf8c |
goto fn_exit;
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
#endif
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
#undef FUNCNAME
|
|
Packit Service |
c5cf8c |
#define FUNCNAME MPI_Comm_dup
|
|
Packit Service |
c5cf8c |
#undef FCNAME
|
|
Packit Service |
c5cf8c |
#define FCNAME MPL_QUOTE(FUNCNAME)
|
|
Packit Service |
c5cf8c |
/*@
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
MPI_Comm_dup - Duplicates an existing communicator with all its cached
|
|
Packit Service |
c5cf8c |
information
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
Input Parameters:
|
|
Packit Service |
c5cf8c |
. comm - Communicator to be duplicated (handle)
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
Output Parameters:
|
|
Packit Service |
c5cf8c |
. newcomm - A new communicator over the same group as 'comm' but with a new
|
|
Packit Service |
c5cf8c |
context. See notes. (handle)
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
Notes:
|
|
Packit Service |
c5cf8c |
This routine is used to create a new communicator that has a new
|
|
Packit Service |
c5cf8c |
communication context but contains the same group of processes as
|
|
Packit Service |
c5cf8c |
the input communicator. Since all MPI communication is performed
|
|
Packit Service |
c5cf8c |
within a communicator (specifies as the group of processes `plus`
|
|
Packit Service |
c5cf8c |
the context), this routine provides an effective way to create a
|
|
Packit Service |
c5cf8c |
private communicator for use by a software module or library. In
|
|
Packit Service |
c5cf8c |
particular, no library routine should use 'MPI_COMM_WORLD' as the
|
|
Packit Service |
c5cf8c |
communicator; instead, a duplicate of a user-specified communicator
|
|
Packit Service |
c5cf8c |
should always be used. For more information, see Using MPI, 2nd
|
|
Packit Service |
c5cf8c |
edition.
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
Because this routine essentially produces a copy of a communicator,
|
|
Packit Service |
c5cf8c |
it also copies any attributes that have been defined on the input
|
|
Packit Service |
c5cf8c |
communicator, using the attribute copy function specified by the
|
|
Packit Service |
c5cf8c |
'copy_function' argument to 'MPI_Keyval_create'. This is
|
|
Packit Service |
c5cf8c |
particularly useful for (a) attributes that describe some property
|
|
Packit Service |
c5cf8c |
of the group associated with the communicator, such as its
|
|
Packit Service |
c5cf8c |
interconnection topology and (b) communicators that are given back
|
|
Packit Service |
c5cf8c |
to the user; the attibutes in this case can track subsequent
|
|
Packit Service |
c5cf8c |
'MPI_Comm_dup' operations on this communicator.
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
.N ThreadSafe
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
.N Fortran
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
.N Errors
|
|
Packit Service |
c5cf8c |
.N MPI_SUCCESS
|
|
Packit Service |
c5cf8c |
.N MPI_ERR_COMM
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
.seealso: MPI_Comm_free, MPI_Keyval_create, MPI_Attr_put, MPI_Attr_delete,
|
|
Packit Service |
c5cf8c |
MPI_Comm_create_keyval, MPI_Comm_set_attr, MPI_Comm_delete_attr
|
|
Packit Service |
c5cf8c |
@*/
|
|
Packit Service |
c5cf8c |
int MPI_Comm_dup(MPI_Comm comm, MPI_Comm * newcomm)
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
int mpi_errno = MPI_SUCCESS;
|
|
Packit Service |
c5cf8c |
MPIR_Comm *comm_ptr = NULL, *newcomm_ptr;
|
|
Packit Service |
c5cf8c |
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_COMM_DUP);
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
MPIR_ERRTEST_INITIALIZED_ORDIE();
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
|
|
Packit Service |
c5cf8c |
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_COMM_DUP);
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* Validate parameters, especially handles needing to be converted */
|
|
Packit Service |
c5cf8c |
#ifdef HAVE_ERROR_CHECKING
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
MPID_BEGIN_ERROR_CHECKS;
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
MPIR_ERRTEST_COMM(comm, mpi_errno);
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
MPID_END_ERROR_CHECKS;
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
#endif /* HAVE_ERROR_CHECKING */
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* Convert MPI object handles to object pointers */
|
|
Packit Service |
c5cf8c |
MPIR_Comm_get_ptr(comm, comm_ptr);
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* Validate parameters and objects (post conversion) */
|
|
Packit Service |
c5cf8c |
#ifdef HAVE_ERROR_CHECKING
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
MPID_BEGIN_ERROR_CHECKS;
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
/* Validate comm_ptr */
|
|
Packit Service |
c5cf8c |
MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
|
|
Packit Service |
c5cf8c |
if (mpi_errno)
|
|
Packit Service |
c5cf8c |
goto fn_fail;
|
|
Packit Service |
c5cf8c |
/* If comm_ptr is not valid, it will be reset to null */
|
|
Packit Service |
c5cf8c |
MPIR_ERRTEST_ARGNULL(newcomm, "newcomm", mpi_errno);
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
MPID_END_ERROR_CHECKS;
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
#endif /* HAVE_ERROR_CHECKING */
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
/* ... body of routine ... */
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
mpi_errno = MPIR_Comm_dup_impl(comm_ptr, &newcomm_ptr);
|
|
Packit Service |
c5cf8c |
if (mpi_errno)
|
|
Packit Service |
c5cf8c |
MPIR_ERR_POP(mpi_errno);
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
MPIR_OBJ_PUBLISH_HANDLE(*newcomm, newcomm_ptr->handle);
|
|
Packit Service |
c5cf8c |
/* ... end of body of routine ... */
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
fn_exit:
|
|
Packit Service |
c5cf8c |
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_COMM_DUP);
|
|
Packit Service |
c5cf8c |
MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
|
|
Packit Service |
c5cf8c |
return mpi_errno;
|
|
Packit Service |
c5cf8c |
|
|
Packit Service |
c5cf8c |
fn_fail:
|
|
Packit Service |
c5cf8c |
/* --BEGIN ERROR HANDLING-- */
|
|
Packit Service |
c5cf8c |
#ifdef HAVE_ERROR_CHECKING
|
|
Packit Service |
c5cf8c |
{
|
|
Packit Service |
c5cf8c |
mpi_errno =
|
|
Packit Service |
c5cf8c |
MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,
|
|
Packit Service |
c5cf8c |
"**mpi_comm_dup", "**mpi_comm_dup %C %p", comm, newcomm);
|
|
Packit Service |
c5cf8c |
}
|
|
Packit Service |
c5cf8c |
#endif
|
|
Packit Service |
c5cf8c |
if (newcomm)
|
|
Packit Service |
c5cf8c |
*newcomm = MPI_COMM_NULL;
|
|
Packit Service |
c5cf8c |
mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
|
|
Packit Service |
c5cf8c |
goto fn_exit;
|
|
Packit Service |
c5cf8c |
/* --END ERROR HANDLING-- */
|
|
Packit Service |
c5cf8c |
}
|