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/*
* Copyright (c) 2001-2002 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 1.3 2003/04/09 17:37:14 brbarret Exp $
*
* Function:
* - LAM interface for threads control in LAM layer
*/
#include <lam_config.h>
#include <lamthreads.h>
/*
* TO-DO: Attribute Interface
*/
/*
* lam_thread_create
*
* FUNCTION: Create a thread
*
* NOTES:
* - Needs attribute argument
*/
int
lam_thread_create(lam_thread_t *new_thread, void *(*start_func)(void *),
void *arg)
{
int ret = 0;
#if LAM_HAVE_POSIX_THREADS
ret = pthread_create(new_thread, NULL, start_func, arg);
#elif LAM_HAVE_SOLARIS_THREADS
ret = thr_create(NULL, 0, start_func, arg, NULL, new_thread);
#else
ret = 1;
#endif
return ret;
}
/*
* lam_thread_exit
*
* Function:
* - terminate calling thread
*
* Notes:
*/
void
lam_thread_exit(void *ret_val)
{
#if LAM_HAVE_POSIX_THREADS
pthread_exit(ret_val);
#elif LAM_HAVE_SOLARIS_THREADS
thr_exit(ret_val);
#endif
}
/*
* lam_thread_join
*
* Function:
* - wait for thread termination
*
* Notes:
*/
int
lam_thread_join(lam_thread_t thread, void **value)
{
int ret;
#if LAM_HAVE_POSIX_THREADS
ret = pthread_join(thread, value);
#elif LAM_HAVE_SOLARIS_THREADS
ret = thr_join(thread, NULL, value);
#else
ret = -1;
#endif
return ret;
}
/*
* lam_thread_self
*
* Function: - get thread specific identifier
* Returns: - thread specific identifier
*/
lam_thread_t
lam_thread_self(void)
{
#if LAM_HAVE_SOLARIS_THREADS
return thr_self();
#elif LAM_HAVE_POSIX_THREADS
return pthread_self();
#else
return -1;
#endif
}
/*
* lam_thread_compare
*
* Function: - compare two thread IDs
* Returns: - 1 if they are the same, 0 otherwise
* - 1 if threading is not enabled (on assumption
* that there is only one thread)
*/
int
lam_thread_compare(lam_thread_t a, lam_thread_t b)
{
#if LAM_HAVE_SOLARIS_THREADS
return (a == b);
#elif LAM_HAVE_POSIX_THREADS
return pthread_equal(a, b);
#else
return (a == b);
#endif
}
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