threads.c

/*  Copyright (C) 1996-1997  Id Software, Inc.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

    See file, 'COPYING', for details.
*/

/*
 * tyrlite/threads.c
 * Modifications by Kevin Shanahan, 1999-2000
 */

#include "cmdlib.h"
#include "threads.h"

#ifdef __alpha
  int             numthreads = 4;
  pthread_mutex_t *my_mutex;
#else
  int        numthreads = 1;
#endif

void InitThreads (void)
{
#ifdef __alpha
    pthread_mutexattr_t mattrib;

    my_mutex = malloc (sizeof(*my_mutex));
    if (pthread_mutexattr_create (&mattrib) == -1)
        Error ("pthread_mutex_attr_create failed");
    if (pthread_mutexattr_setkind_np (&mattrib, MUTEX_FAST_NP) == -1)
        Error ("pthread_mutexattr_setkind_np failed");
    if (pthread_mutex_init (my_mutex, mattrib) == -1)
        Error ("pthread_mutex_init failed");
#endif
}

/*
 * ===============
 * RunThreadsOn
 * ===============
 */
void RunThreadsOn ( threadfunc_t func )
{
#ifdef __alpha
    pthread_t      work_threads[256];
    pthread_addr_t status;
    pthread_attr_t attrib;
    int            i;

    if (numthreads == 1) 
	{
        func (NULL);
        return;
    }

    if (pthread_attr_create (&attrib) == -1)
        Error ("pthread_attr_create failed");
    if (pthread_attr_setstacksize (&attrib, 0x100000) == -1)
        Error ("pthread_attr_setstacksize failed");

    for (i=0 ; i<numthreads ; i++) 
	{
	if (pthread_create(&work_threads[i], attrib,
			   (pthread_startroutine_t)func,
			   (pthread_addr_t)i)            == -1)
            Error ("pthread_create failed");
    }

    for (i=0 ; i<numthreads ; i++) 
	{
        if (pthread_join (work_threads[i], &status) == -1)
            Error ("pthread_join failed");
    }
#else
    func (NULL);
#endif
}