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1113 | palkovsky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2006 Ondrej Palkovsky |
1113 | palkovsky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1866 | jermar | 29 | /** @addtogroup libc |
1653 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
2482 | jermar | 35 | #ifndef LIBC_FIBRIL_H_ |
36 | #define LIBC_FIBRIL_H_ |
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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 |
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1125 | jermar | 43 | #define context_set(c, _pc, stack, size, ptls) \ |
44 | (c)->pc = (sysarg_t) (_pc); \ |
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45 | (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \ |
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1113 | palkovsky | 46 | (c)->tls = (sysarg_t) (ptls); |
47 | #endif /* context_set */ |
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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, |
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54 | FIBRIL_FROM_MANAGER, |
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55 | FIBRIL_FROM_DEAD |
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56 | } fibril_switch_type_t; |
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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; |
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64 | void *arg; |
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65 | int (*func)(void *); |
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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; |
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71 | }; |
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2482 | jermar | 72 | typedef struct fibril fibril_t; |
1113 | palkovsky | 73 | |
74 | extern int context_save(context_t *c); |
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75 | extern void context_restore(context_t *c) __attribute__ ((noreturn)); |
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76 | |||
2482 | jermar | 77 | extern fid_t fibril_create(int (*func)(void *), void *arg); |
78 | extern fibril_t *fibril_setup(void); |
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79 | extern void fibril_teardown(fibril_t *f); |
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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); |
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83 | extern void fibril_remove_manager(void); |
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84 | extern fid_t fibril_get_id(void); |
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85 | extern void fibril_inc_sercount(void); |
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86 | extern void fibril_dec_sercount(void); |
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1113 | palkovsky | 87 | |
2568 | jermar | 88 | static inline int fibril_yield(void) { |
89 | return fibril_switch(FIBRIL_PREEMPT); |
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1392 | palkovsky | 90 | } |
1129 | palkovsky | 91 | |
1113 | palkovsky | 92 | #endif |
1653 | cejka | 93 | |
1866 | jermar | 94 | /** @} |
1653 | cejka | 95 | */ |