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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 <libadt/list.h> |
39 | #include <libadt/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 | 50 | ||
51 | typedef enum { |
51 | typedef enum { |
52 | FIBRIL_PREEMPT, |
52 | FIBRIL_PREEMPT, |
53 | FIBRIL_TO_MANAGER, |
53 | FIBRIL_TO_MANAGER, |
54 | FIBRIL_FROM_MANAGER, |
54 | FIBRIL_FROM_MANAGER, |
55 | FIBRIL_FROM_DEAD |
55 | FIBRIL_FROM_DEAD |
56 | } fibril_switch_type_t; |
56 | } fibril_switch_type_t; |
57 | 57 | ||
58 | typedef sysarg_t fid_t; |
58 | typedef sysarg_t fid_t; |
59 | 59 | ||
60 | struct fibril { |
60 | struct fibril { |
61 | link_t link; |
61 | link_t link; |
62 | context_t ctx; |
62 | context_t ctx; |
63 | void *stack; |
63 | void *stack; |
64 | void *arg; |
64 | void *arg; |
65 | int (*func)(void *); |
65 | int (*func)(void *); |
66 | tcb_t *tcb; |
66 | tcb_t *tcb; |
67 | 67 | ||
68 | struct fibril *clean_after_me; |
68 | struct fibril *clean_after_me; |
69 | int retval; |
69 | int retval; |
70 | int flags; |
70 | int flags; |
71 | }; |
71 | }; |
72 | typedef struct fibril fibril_t; |
72 | typedef struct fibril fibril_t; |
73 | 73 | ||
74 | extern int context_save(context_t *c); |
74 | extern int context_save(context_t *c); |
75 | extern void context_restore(context_t *c) __attribute__ ((noreturn)); |
75 | extern void context_restore(context_t *c) __attribute__ ((noreturn)); |
76 | 76 | ||
77 | extern fid_t fibril_create(int (*func)(void *), void *arg); |
77 | extern fid_t fibril_create(int (*func)(void *), void *arg); |
78 | extern fibril_t *fibril_setup(void); |
78 | extern fibril_t *fibril_setup(void); |
79 | extern void fibril_teardown(fibril_t *f); |
79 | extern void fibril_teardown(fibril_t *f); |
80 | extern int fibril_switch(fibril_switch_type_t stype); |
80 | extern int fibril_switch(fibril_switch_type_t stype); |
81 | extern void fibril_add_ready(fid_t fid); |
81 | extern void fibril_add_ready(fid_t fid); |
82 | extern void fibril_add_manager(fid_t fid); |
82 | extern void fibril_add_manager(fid_t fid); |
83 | extern void fibril_remove_manager(void); |
83 | extern void fibril_remove_manager(void); |
84 | extern fid_t fibril_get_id(void); |
84 | extern fid_t fibril_get_id(void); |
85 | extern void fibril_inc_sercount(void); |
85 | extern void fibril_inc_sercount(void); |
86 | extern void fibril_dec_sercount(void); |
86 | extern void fibril_dec_sercount(void); |
87 | 87 | ||
88 | static inline int fibril_yield(void) { |
88 | static inline int fibril_yield(void) { |
89 | return fibril_switch(FIBRIL_PREEMPT); |
89 | return fibril_switch(FIBRIL_PREEMPT); |
90 | } |
90 | } |
91 | 91 | ||
92 | #endif |
92 | #endif |
93 | 93 | ||
94 | /** @} |
94 | /** @} |
95 | */ |
95 | */ |
96 | 96 |