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/*
* Copyright (c) 2001-2003 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
*
* $Id: lamthreads.c,v 6.19 2003/04/09 17:25:04 brbarret Exp $
*
* Function: - LAM interface for threads in MPI layer
* - Anything applicable to threads in general
* should not be here, but should be in
* share/threads/
*/
#include <lam_config.h>
#include <stdio.h>
#include <mpi.h>
#include <lammpithreads.h>
/*
* Exported variables
*/
int lam_mpi_thread_level = MPI_THREAD_SINGLE;
lam_thread_t lam_mpi_main_thread;
lam_mutex_t lam_mpi_mutex;
/*
* lam_thread_init
*
* Function: - initialize the LAM thread interface
*/
void
lam_mpi_thread_init(void)
{
#if LAM_HAVE_THREADS
/* Initialize the global mutex */
if (lam_mpi_thread_level >= MPI_THREAD_SERIALIZED)
lam_mutex_init(&lam_mpi_mutex);
#endif
/* Set the main thread variable -- even if we don't have threads, so
that MPI_IS_THREAD_MAIN will return something predicable, at
least. */
lam_mpi_main_thread = lam_thread_self();
}
/*
* lam_thread_finalize
*
* Function: - finalize the LAM thread interface
*/
void
lam_mpi_thread_finalize(void)
{
#if LAM_HAVE_THREADS
if (lam_mpi_thread_level >= MPI_THREAD_SERIALIZED)
lam_mutex_destroy(&lam_mpi_mutex);
#endif
}
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