/* -*- 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_spawn */
#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPI_Comm_spawn = PMPI_Comm_spawn
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPI_Comm_spawn MPI_Comm_spawn
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPI_Comm_spawn as PMPI_Comm_spawn
#elif defined(HAVE_WEAK_ATTRIBUTE)
int MPI_Comm_spawn(const char *command, char *argv[], int maxprocs, MPI_Info info, int root,
MPI_Comm comm, MPI_Comm * intercomm, int array_of_errcodes[])
__attribute__ ((weak, alias("PMPI_Comm_spawn")));
#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_spawn
#define MPI_Comm_spawn PMPI_Comm_spawn
/* Any internal routines can go here. Make them static if possible */
#endif
#undef FUNCNAME
#define FUNCNAME MPI_Comm_spawn
#undef FCNAME
#define FCNAME MPL_QUOTE(FUNCNAME)
/*@
MPI_Comm_spawn - Spawn up to maxprocs instances of a single MPI application
Input Parameters:
+ command - name of program to be spawned (string, significant only at root)
. argv - arguments to command (array of strings, significant only at root)
. maxprocs - maximum number of processes to start (integer, significant only
at root)
. info - a set of key-value pairs telling the runtime system where and how
to start the processes (handle, significant only at root)
. root - rank of process in which previous arguments are examined (integer)
- comm - intracommunicator containing group of spawning processes (handle)
Output Parameters:
+ intercomm - intercommunicator between original group and the
newly spawned group (handle)
- array_of_errcodes - one code per process (array of integer)
.N ThreadSafe
.N Fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_COMM
.N MPI_ERR_ARG
.N MPI_ERR_INFO
.N MPI_ERR_SPAWN
@*/
int MPI_Comm_spawn(const char *command, char *argv[], int maxprocs, MPI_Info info,
int root, MPI_Comm comm, MPI_Comm * intercomm, int array_of_errcodes[])
{
int mpi_errno = MPI_SUCCESS;
MPIR_Comm *comm_ptr = NULL, *intercomm_ptr;
MPIR_Info *info_ptr = NULL;
MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_COMM_SPAWN);
MPIR_ERRTEST_INITIALIZED_ORDIE();
MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);
MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_COMM_SPAWN);
/* Validate parameters, especially handles needing to be converted */
#ifdef HAVE_ERROR_CHECKING
{
MPID_BEGIN_ERROR_CHECKS;
{
MPIR_ERRTEST_COMM(comm, mpi_errno);
}
MPID_END_ERROR_CHECKS;
}
#endif
/* 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;
{
/* Validate comm_ptr */
MPIR_Comm_valid_ptr(comm_ptr, mpi_errno, FALSE);
/* If comm_ptr is not valid, it will be reset to null */
if (mpi_errno)
goto fn_fail;
MPIR_ERRTEST_COMM_INTRA(comm_ptr, mpi_errno);
MPIR_ERRTEST_RANK(comm_ptr, root, mpi_errno);
if (comm_ptr->rank == root) {
MPIR_ERRTEST_INFO_OR_NULL(info, mpi_errno);
MPIR_ERRTEST_ARGNULL(command, "command", mpi_errno);
MPIR_ERRTEST_ARGNEG(maxprocs, "maxprocs", mpi_errno);
}
}
MPID_END_ERROR_CHECKS;
}
#endif /* HAVE_ERROR_CHECKING */
if (comm_ptr->rank == root) {
MPIR_Info_get_ptr(info, info_ptr);
}
/* ... body of routine ... */
mpi_errno = MPID_Comm_spawn_multiple(1, (char **) &command, &argv,
&maxprocs, &info_ptr, root,
comm_ptr, &intercomm_ptr, array_of_errcodes);
if (mpi_errno != MPI_SUCCESS)
goto fn_fail;
MPIR_OBJ_PUBLISH_HANDLE(*intercomm, intercomm_ptr->handle);
/* ... end of body of routine ... */
fn_exit:
MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_COMM_SPAWN);
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_spawn", "**mpi_comm_spawn %s %p %d %I %d %C %p %p",
command, argv, maxprocs, info, root, comm, intercomm,
array_of_errcodes);
}
#endif
mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);
goto fn_exit;
/* --END ERROR HANDLING-- */
}