/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2012 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
#include "mpiimpl.h"
/* -- Begin Profiling Symbol Block for routine MPI_Comm_idup */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Comm_idup = PMPI_Comm_idup
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Comm_idup MPI_Comm_idup
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Comm_idup as PMPI_Comm_idup
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Comm_idup(MPI_Comm comm, MPI_Comm * newcomm, MPI_Request * request)
__attribute__ ((weak, alias("PMPI_Comm_idup")));
#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_idup
#define MPI_Comm_idup PMPI_Comm_idup
/* any non-MPI functions go here, especially non-static ones */
#undef FUNCNAME
#define FUNCNAME MPIR_Comm_idup_impl
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
int MPIR_Comm_idup_impl(MPIR_Comm * comm_ptr, MPIR_Comm ** newcommp, MPIR_Request ** reqp)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Attribute *new_attributes = 0;
/* Copy attributes, executing the attribute copy functions */
/* This accesses the attribute dup function through the perprocess
* structure to prevent comm_dup from forcing the linking of the
* attribute functions. The actual function is (by default)
* MPIR_Attr_dup_list
*/
if (MPIR_Process.attr_dup) {
mpi_errno = MPIR_Process.attr_dup(comm_ptr->handle, comm_ptr->attributes, &new_attributes);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
}
mpi_errno = MPII_Comm_copy_data(comm_ptr, newcommp);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
(*newcommp)->attributes = new_attributes;
/* We now have a mostly-valid new communicator, so begin the process of
* allocating a context ID to use for actual communication */
if (comm_ptr->comm_kind == MPIR_COMM_KIND__INTERCOMM) {
mpi_errno = MPIR_Get_intercomm_contextid_nonblock(comm_ptr, *newcommp, reqp);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
} else {
mpi_errno = MPIR_Get_contextid_nonblock(comm_ptr, *newcommp, reqp);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
}
fn_exit:
return mpi_errno;
fn_fail:
goto fn_exit;
}
#endif /* MPICH_MPI_FROM_PMPI */
#undef FUNCNAME
#define FUNCNAME MPI_Comm_idup
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Comm_idup - nonblocking communicator duplication
Input Parameters:
. comm - communicator (handle)
Output Parameters:
+ newcomm - copy of comm (handle)
- request - communication request (handle)
.N ThreadSafe
.N Fortran
.N Errors
@*/
int MPI_Comm_idup(MPI_Comm comm, MPI_Comm * newcomm, MPI_Request * request)
{
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL;
MPIR_Comm *newcomm_ptr = NULL;
MPIR_Request *dreq = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_COMM_IDUP);
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_COMM_IDUP);
/* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
/* TODO more checks may be appropriate */
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* Convert MPI object handles to object pointers */
MPIR_Comm_get_ptr(comm, comm_ptr);
/* Validate parameters and objects (post conversion) */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_ERRTEST_ARGNULL(request, "request", mpi_errno);
/* TODO more checks may be appropriate (counts, in_place, buffer aliasing, etc) */
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
/* ... body of routine ... */
*request = MPI_REQUEST_NULL;
*newcomm = MPI_COMM_NULL;
mpi_errno = MPIR_Comm_idup_impl(comm_ptr, &newcomm_ptr, &dreq);
if (mpi_errno)
MPIR_ERR_POP(mpi_errno);
/* NOTE: this is a publication for most of the comm, but the context ID
* won't be valid yet, so we must "republish" relative to the request
* handle at request completion time. */
MPIR_OBJ_PUBLISH_HANDLE(*newcomm, newcomm_ptr->handle);
*request = dreq->handle;
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_COMM_IDUP);
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_idup", "**mpi_comm_idup %C %p %p", comm, newcomm,
request);
}
#endif
mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}