1 /*
2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
3  *
4  * This code is derived from software contributed to The DragonFly Project
5  * by Matthew Dillon <dillon@backplane.com>
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in
15  *    the documentation and/or other materials provided with the
16  *    distribution.
17  * 3. Neither the name of The DragonFly Project nor the names of its
18  *    contributors may be used to endorse or promote products derived
19  *    from this software without specific, prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  * $DragonFly: src/sys/platform/vkernel/include/cothread.h,v 1.2 2008/03/27 04:28:07 dillon Exp $
35  */
36 
37 #ifndef _MACHINE_COTHREAD_H_
38 #define _MACHINE_COTHREAD_H_
39 
40 #include <pthread.h>
41 
42 struct cothread {
43 	pthread_t	pthr;
44 	pthread_t	pintr;
45 	void		*arg;
46 	void		(*thr_func)(struct cothread *);
47 	void		(*thr_intr)(struct cothread *);
48 	void		*intr_id;
49 	pthread_mutex_t	mutex;
50 	pthread_cond_t	cond;
51 };
52 
53 typedef struct cothread *cothread_t;
54 
55 cothread_t cothread_create(void (*thr_func)(cothread_t cotd),
56 			   void (*thr_intr)(cothread_t cotd),
57 			   void *arg, const  char *name);
58 void cothread_delete(cothread_t *cotdp);
59 void cothread_intr(cothread_t cotd);
60 void cothread_signal(cothread_t cotd);
61 void cothread_wait(cothread_t cotd);
62 void cothread_lock(cothread_t cotd, int is_cotd);
63 void cothread_unlock(cothread_t cotd, int is_cotd);
64 
65 #endif
66