Subversion Repositories HelenOS

Rev

Rev 2586 | Rev 4537 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1113 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2006 Ondrej Palkovsky
1113 palkovsky 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1866 jermar 29
/** @addtogroup libc
1653 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
2482 jermar 35
#ifndef LIBC_FIBRIL_H_
36
#define LIBC_FIBRIL_H_
1113 palkovsky 37
 
2482 jermar 38
#include <libarch/fibril.h>
1113 palkovsky 39
#include <libadt/list.h>
2586 jermar 40
#include <libarch/tls.h>
1113 palkovsky 41
 
42
#ifndef context_set
1125 jermar 43
#define context_set(c, _pc, stack, size, ptls)          \
44
    (c)->pc = (sysarg_t) (_pc);             \
45
    (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA;     \
1113 palkovsky 46
        (c)->tls = (sysarg_t) (ptls);
47
#endif /* context_set */
48
 
2482 jermar 49
#define FIBRIL_SERIALIZED   1
1610 palkovsky 50
 
1392 palkovsky 51
typedef enum {
2482 jermar 52
    FIBRIL_PREEMPT,
53
    FIBRIL_TO_MANAGER,
54
    FIBRIL_FROM_MANAGER,
55
    FIBRIL_FROM_DEAD
56
} fibril_switch_type_t;
1392 palkovsky 57
 
2482 jermar 58
typedef sysarg_t fid_t;
1113 palkovsky 59
 
2482 jermar 60
struct fibril {
1128 jermar 61
    link_t link;
1113 palkovsky 62
    context_t ctx;
63
    void *stack;
64
    void *arg;
65
    int (*func)(void *);
1129 palkovsky 66
    tcb_t *tcb;
1113 palkovsky 67
 
2482 jermar 68
    struct fibril *clean_after_me;
1113 palkovsky 69
    int retval;
70
    int flags;
71
};
2482 jermar 72
typedef struct fibril fibril_t;
1113 palkovsky 73
 
74
extern int context_save(context_t *c);
75
extern void context_restore(context_t *c) __attribute__ ((noreturn));
76
 
2482 jermar 77
extern fid_t fibril_create(int (*func)(void *), void *arg);
78
extern fibril_t *fibril_setup(void);
79
extern void fibril_teardown(fibril_t *f);
2568 jermar 80
extern int fibril_switch(fibril_switch_type_t stype);
2482 jermar 81
extern void fibril_add_ready(fid_t fid);
82
extern void fibril_add_manager(fid_t fid);
83
extern void fibril_remove_manager(void);
84
extern fid_t fibril_get_id(void);
85
extern void fibril_inc_sercount(void);
86
extern void fibril_dec_sercount(void);
1113 palkovsky 87
 
2568 jermar 88
static inline int fibril_yield(void) {
89
    return fibril_switch(FIBRIL_PREEMPT);
1392 palkovsky 90
}
1129 palkovsky 91
 
1113 palkovsky 92
#endif
1653 cejka 93
 
1866 jermar 94
/** @}
1653 cejka 95
 */