WebSVN – HelenOS – Diff – /branches/tracing/uspace/lib/libc/include/fibril_sync.h


/*
 * Copyright (c) 2009 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup libc
 * @{
 */
/** @file
 */
 
#ifndef LIBC_FIBRIL_SYNC_H_
#define LIBC_FIBRIL_SYNC_H_
 
#include <async.h>
#include <fibril.h>
#include <adt/list.h>
#include <libarch/tls.h>
 
typedef struct {
    int counter;
    link_t waiters;
} fibril_mutex_t;
 
#define FIBRIL_MUTEX_INITIALIZE(name) \
    fibril_mutex_t name = { \
        .counter = 1, \
        .waiters = { \
            .prev = &name.waiters, \
            .next = &name.waiters, \
        } \
    }
 
typedef struct {
    unsigned writers;
    unsigned readers;
    link_t waiters;
} fibril_rwlock_t;
 
#define FIBRIL_RWLOCK_INITIALIZE(name) \
    fibril_rwlock_t name = { \
        .readers = 0, \
        .writers = 0, \
        .waiters = { \
            .prev = &name.waiters, \
            .next = &name.waiters, \
        } \
    }
 
typedef struct {
    link_t waiters;
} fibril_condvar_t;
 
#define FIBRIL_CONDVAR_INITIALIZE(name) \
    fibril_condvar_t name = { \
        .waiters = { \
            .next = &name.waiters, \
            .prev = &name.waiters, \
        } \
    }
 
extern void fibril_mutex_initialize(fibril_mutex_t *);
extern void fibril_mutex_lock(fibril_mutex_t *);
extern bool fibril_mutex_trylock(fibril_mutex_t *);
extern void fibril_mutex_unlock(fibril_mutex_t *);
 
extern void fibril_rwlock_initialize(fibril_rwlock_t *);
extern void fibril_rwlock_read_lock(fibril_rwlock_t *);
extern void fibril_rwlock_write_lock(fibril_rwlock_t *);
extern void fibril_rwlock_read_unlock(fibril_rwlock_t *);
extern void fibril_rwlock_write_unlock(fibril_rwlock_t *);
 
extern void fibril_condvar_initialize(fibril_condvar_t *);
extern void fibril_condvar_wait(fibril_condvar_t *, fibril_mutex_t *);
extern void fibril_condvar_signal(fibril_condvar_t *);
extern void fibril_condvar_broadcast(fibril_condvar_t *);
 
#endif
 
/** @}
 */
 

Rev 4535	Rev 4692
1	/*	1	/*
2	* Copyright (c) 2009 Jakub Jermar	2	* Copyright (c) 2009 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup libc	29	/** @addtogroup libc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef LIBC_FIBRIL_SYNC_H_	35	#ifndef LIBC_FIBRIL_SYNC_H_
36	#define LIBC_FIBRIL_SYNC_H_	36	#define LIBC_FIBRIL_SYNC_H_
37		37
38	#include <async.h>	38	#include <async.h>
39	#include <fibril.h>	39	#include <fibril.h>
40	#include <adt/list.h>	40	#include <adt/list.h>
41	#include <libarch/tls.h>	41	#include <libarch/tls.h>
42		42
43	typedef struct {	43	typedef struct {
44	int counter;	44	int counter;
45	link_t waiters;	45	link_t waiters;
46	} fibril_mutex_t;	46	} fibril_mutex_t;
47		47
48	#define FIBRIL_MUTEX_INITIALIZE(name) \	48	#define FIBRIL_MUTEX_INITIALIZE(name) \
49	fibril_mutex_t name = { \	49	fibril_mutex_t name = { \
50	.counter = 1, \	50	.counter = 1, \
51	.waiters = { \	51	.waiters = { \
52	.prev = &name.waiters, \	52	.prev = &name.waiters, \
53	.next = &name.waiters, \	53	.next = &name.waiters, \
54	} \	54	} \
55	}	55	}
56		56
57	typedef struct {	57	typedef struct {
58	unsigned writers;	58	unsigned writers;
59	unsigned readers;	59	unsigned readers;
60	link_t waiters;	60	link_t waiters;
61	} fibril_rwlock_t;	61	} fibril_rwlock_t;
62		62
63	#define FIBRIL_RWLOCK_INITIALIZE(name) \	63	#define FIBRIL_RWLOCK_INITIALIZE(name) \
64	fibril_rwlock_t name = { \	64	fibril_rwlock_t name = { \
65	.readers = 0, \	65	.readers = 0, \
66	.writers = 0, \	66	.writers = 0, \
67	.waiters = { \	67	.waiters = { \
68	.prev = &name.waiters, \	68	.prev = &name.waiters, \
69	.next = &name.waiters, \	69	.next = &name.waiters, \
70	} \	70	} \
71	}	71	}
72		72
73	typedef struct {	73	typedef struct {
74	link_t waiters;	74	link_t waiters;
75	} fibril_condvar_t;	75	} fibril_condvar_t;
76		76
77	#define FIBRIL_CONDVAR_INITIALIZE(name) \	77	#define FIBRIL_CONDVAR_INITIALIZE(name) \
78	fibril_condvar_t name = { \	78	fibril_condvar_t name = { \
79	.waiters = { \	79	.waiters = { \
80	.next = &name.waiters, \	80	.next = &name.waiters, \
81	.prev = &name.waiters, \	81	.prev = &name.waiters, \
82	} \	82	} \
83	}	83	}
84		84
85	extern void fibril_mutex_initialize(fibril_mutex_t *);	85	extern void fibril_mutex_initialize(fibril_mutex_t *);
86	extern void fibril_mutex_lock(fibril_mutex_t *);	86	extern void fibril_mutex_lock(fibril_mutex_t *);
87	extern bool fibril_mutex_trylock(fibril_mutex_t *);	87	extern bool fibril_mutex_trylock(fibril_mutex_t *);
88	extern void fibril_mutex_unlock(fibril_mutex_t *);	88	extern void fibril_mutex_unlock(fibril_mutex_t *);
89		89
90	extern void fibril_rwlock_initialize(fibril_rwlock_t *);	90	extern void fibril_rwlock_initialize(fibril_rwlock_t *);
91	extern void fibril_rwlock_read_lock(fibril_rwlock_t *);	91	extern void fibril_rwlock_read_lock(fibril_rwlock_t *);
92	extern void fibril_rwlock_write_lock(fibril_rwlock_t *);	92	extern void fibril_rwlock_write_lock(fibril_rwlock_t *);
93	extern void fibril_rwlock_read_unlock(fibril_rwlock_t *);	93	extern void fibril_rwlock_read_unlock(fibril_rwlock_t *);
94	extern void fibril_rwlock_write_unlock(fibril_rwlock_t *);	94	extern void fibril_rwlock_write_unlock(fibril_rwlock_t *);
95		95
96	extern void fibril_condvar_initialize(fibril_condvar_t *);	96	extern void fibril_condvar_initialize(fibril_condvar_t *);
97	extern void fibril_condvar_wait(fibril_condvar_t , fibril_mutex_t );	97	extern void fibril_condvar_wait(fibril_condvar_t , fibril_mutex_t );
98	extern void fibril_condvar_signal(fibril_condvar_t *);	98	extern void fibril_condvar_signal(fibril_condvar_t *);
99	extern void fibril_condvar_broadcast(fibril_condvar_t *);	99	extern void fibril_condvar_broadcast(fibril_condvar_t *);
100		100
101	#endif	101	#endif
102		102
103	/** @}	103	/** @}
104	*/	104	*/
105		105

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(root)/branches/tracing/uspace/lib/libc/include/fibril_sync.h – Rev 4535 → 4692