WebSVN – HelenOS – Diff – /branches/network/uspace/lib/libc/include/fibril.h


/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * 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_H_
#define LIBC_FIBRIL_H_
 
#include <libarch/fibril.h>
#include <adt/list.h>
#include <libarch/tls.h>
 
#ifndef context_set
#define context_set(c, _pc, stack, size, ptls) \
    (c)->pc = (sysarg_t) (_pc); \
    (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
    (c)->tls = (sysarg_t) (ptls);
#endif /* context_set */
 
#define FIBRIL_SERIALIZED   1
#define FIBRIL_WRITER       2
 
typedef enum {
    FIBRIL_PREEMPT,
    FIBRIL_TO_MANAGER,
    FIBRIL_FROM_MANAGER,
    FIBRIL_FROM_DEAD
} fibril_switch_type_t;
 
typedef sysarg_t fid_t;
 
struct fibril {
    link_t link;
    context_t ctx;
    void *stack;
    void *arg;
    int (*func)(void *);
    tcb_t *tcb;
 
    struct fibril *clean_after_me;
    int retval;
    int flags;
};
typedef struct fibril fibril_t;
 
/** Fibril-local variable specifier */
#define fibril_local __thread
 
extern int context_save(context_t *c) __attribute__ ((returns_twice));
extern void context_restore(context_t *c) __attribute__ ((noreturn));
 
extern fid_t fibril_create(int (*func)(void *), void *arg);
extern fibril_t *fibril_setup(void);
extern void fibril_teardown(fibril_t *f);
extern int fibril_switch(fibril_switch_type_t stype);
extern void fibril_add_ready(fid_t fid);
extern void fibril_add_manager(fid_t fid);
extern void fibril_remove_manager(void);
extern fid_t fibril_get_id(void);
extern void fibril_inc_sercount(void);
extern void fibril_dec_sercount(void);
 
static inline int fibril_yield(void) {
    return fibril_switch(FIBRIL_PREEMPT);
}
 
#endif
 
/** @}
 */
 

Rev 4581	Rev 4718
1	/*	1	/*
2	* Copyright (c) 2006 Ondrej Palkovsky	2	* Copyright (c) 2006 Ondrej Palkovsky
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_H_	35	#ifndef LIBC_FIBRIL_H_
36	#define LIBC_FIBRIL_H_	36	#define LIBC_FIBRIL_H_
37		37
38	#include <libarch/fibril.h>	38	#include <libarch/fibril.h>
39	#include <adt/list.h>	39	#include <adt/list.h>
40	#include <libarch/tls.h>	40	#include <libarch/tls.h>
41		41
42	#ifndef context_set	42	#ifndef context_set
43	#define context_set(c, _pc, stack, size, ptls) \	43	#define context_set(c, _pc, stack, size, ptls) \
44	(c)->pc = (sysarg_t) (_pc); \	44	(c)->pc = (sysarg_t) (_pc); \
45	(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \	45	(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
46	(c)->tls = (sysarg_t) (ptls);	46	(c)->tls = (sysarg_t) (ptls);
47	#endif /* context_set */	47	#endif /* context_set */
48		48
49	#define FIBRIL_SERIALIZED 1	49	#define FIBRIL_SERIALIZED 1
50	#define FIBRIL_WRITER 2	50	#define FIBRIL_WRITER 2
51		51
52	typedef enum {	52	typedef enum {
53	FIBRIL_PREEMPT,	53	FIBRIL_PREEMPT,
54	FIBRIL_TO_MANAGER,	54	FIBRIL_TO_MANAGER,
55	FIBRIL_FROM_MANAGER,	55	FIBRIL_FROM_MANAGER,
56	FIBRIL_FROM_DEAD	56	FIBRIL_FROM_DEAD
57	} fibril_switch_type_t;	57	} fibril_switch_type_t;
58		58
59	typedef sysarg_t fid_t;	59	typedef sysarg_t fid_t;
60		60
61	struct fibril {	61	struct fibril {
62	link_t link;	62	link_t link;
63	context_t ctx;	63	context_t ctx;
64	void *stack;	64	void *stack;
65	void *arg;	65	void *arg;
66	int (func)(void );	66	int (func)(void );
67	tcb_t *tcb;	67	tcb_t *tcb;
68		68
69	struct fibril *clean_after_me;	69	struct fibril *clean_after_me;
70	int retval;	70	int retval;
71	int flags;	71	int flags;
72	};	72	};
73	typedef struct fibril fibril_t;	73	typedef struct fibril fibril_t;
74		74
75	/** Fibril-local variable specifier */	75	/** Fibril-local variable specifier */
76	#define fibril_local __thread	76	#define fibril_local __thread
77		77
78	extern int context_save(context_t *c);	78	extern int context_save(context_t *c) __attribute__ ((returns_twice));
79	extern void context_restore(context_t *c) __attribute__ ((noreturn));	79	extern void context_restore(context_t *c) __attribute__ ((noreturn));
80		80
81	extern fid_t fibril_create(int (func)(void ), void *arg);	81	extern fid_t fibril_create(int (func)(void ), void *arg);
82	extern fibril_t *fibril_setup(void);	82	extern fibril_t *fibril_setup(void);
83	extern void fibril_teardown(fibril_t *f);	83	extern void fibril_teardown(fibril_t *f);
84	extern int fibril_switch(fibril_switch_type_t stype);	84	extern int fibril_switch(fibril_switch_type_t stype);
85	extern void fibril_add_ready(fid_t fid);	85	extern void fibril_add_ready(fid_t fid);
86	extern void fibril_add_manager(fid_t fid);	86	extern void fibril_add_manager(fid_t fid);
87	extern void fibril_remove_manager(void);	87	extern void fibril_remove_manager(void);
88	extern fid_t fibril_get_id(void);	88	extern fid_t fibril_get_id(void);
89	extern void fibril_inc_sercount(void);	89	extern void fibril_inc_sercount(void);
90	extern void fibril_dec_sercount(void);	90	extern void fibril_dec_sercount(void);
91		91
92	static inline int fibril_yield(void) {	92	static inline int fibril_yield(void) {
93	return fibril_switch(FIBRIL_PREEMPT);	93	return fibril_switch(FIBRIL_PREEMPT);
94	}	94	}
95		95
96	#endif	96	#endif
97		97
98	/** @}	98	/** @}
99	*/	99	*/
100		100

Subversion Repositories HelenOS

(root)/branches/network/uspace/lib/libc/include/fibril.h – Rev 4581 → 4718