Mercurial > MadButterfly
annotate src/timer.c @ 795:46a4cd4d382b
Remove dependent on system time to gain frame rate
Date.now() would read system time. It is ineffeciency in for some
implementation. To gain frame rate, we should rely on accuration of
setInterval().
| author | Thinker K.F. Li <thinker@codemud.net> |
|---|---|
| date | Tue, 31 Aug 2010 10:04:15 +0800 |
| parents | 530bb7728546 |
| children | 586e50f82c1f |
| rev | line source |
|---|---|
| 39 | 1 #include <stdio.h> |
| 2 #include <stdint.h> | |
| 3 #include <stdlib.h> | |
| 41 | 4 #include <string.h> |
|
186
530bb7728546
Move header files to $(top_srcdir)/include/ and prefixed with 'mb_'.
Thinker K.F. Li <thinker@branda.to>
parents:
185
diff
changeset
|
5 #include "mb_timer.h" |
|
530bb7728546
Move header files to $(top_srcdir)/include/ and prefixed with 'mb_'.
Thinker K.F. Li <thinker@branda.to>
parents:
185
diff
changeset
|
6 #include "mb_tools.h" |
| 39 | 7 |
| 8 | |
| 9 #define OK 0 | |
| 10 #define ERR -1 | |
| 11 | |
| 12 struct _mb_timer { | |
| 41 | 13 mb_timeval_t tmo; |
| 39 | 14 mb_tmo_hdlr hdlr; |
| 15 void *arg; | |
| 16 mb_timer_t *next; | |
| 17 }; | |
| 18 | |
| 19 struct _mb_tman { | |
| 20 STAILQ(mb_timer_t) timers; | |
| 21 elmpool_t *timer_pool; | |
| 22 }; | |
| 23 | |
| 24 mb_tman_t *mb_tman_new(void) { | |
| 25 mb_tman_t *tman; | |
| 26 | |
| 27 tman = (mb_tman_t *)malloc(sizeof(mb_tman_t)); | |
| 28 if(tman == NULL) | |
| 29 return NULL; | |
| 30 | |
| 31 tman->timer_pool = elmpool_new(sizeof(mb_timer_t), 32); | |
| 32 if(tman->timer_pool == NULL) { | |
| 33 free(tman); | |
| 34 return NULL; | |
| 35 } | |
| 36 | |
| 37 STAILQ_INIT(tman->timers); | |
| 38 | |
| 39 return tman; | |
| 40 } | |
| 41 | |
| 42 void mb_tman_free(mb_tman_t *tman) { | |
| 43 elmpool_free(tman->timer_pool); | |
| 44 free(tman); | |
| 45 } | |
| 46 | |
| 47 mb_timer_t *mb_tman_timeout(mb_tman_t *tman, | |
| 41 | 48 const mb_timeval_t *tmo, |
| 39 | 49 mb_tmo_hdlr hdlr, void *arg) { |
| 50 mb_timer_t *timer, *visit, *last; | |
| 51 | |
| 52 timer = elmpool_elm_alloc(tman->timer_pool); | |
| 53 if(timer == NULL) | |
| 54 return NULL; | |
| 55 | |
|
43
6270230b9248
Use MB_TIMEVAL_CP() instead of memcpy
Thinker K.F. Li <thinker@branda.to>
parents:
41
diff
changeset
|
56 MB_TIMEVAL_CP(&timer->tmo, tmo); |
| 39 | 57 timer->hdlr = hdlr; |
| 58 timer->arg = arg; | |
| 59 | |
| 60 last = NULL; | |
| 61 for(visit = STAILQ_HEAD(tman->timers); | |
| 62 visit != NULL; | |
| 63 visit = STAILQ_NEXT(mb_timer_t, next, visit)) { | |
|
155
6749f6639924
Fix bug for STAILQ that fail to remove a node.
Thinker K.F. Li <thinker@branda.to>
parents:
50
diff
changeset
|
64 if(MB_TIMEVAL_LATER(&visit->tmo, tmo) || |
|
6749f6639924
Fix bug for STAILQ that fail to remove a node.
Thinker K.F. Li <thinker@branda.to>
parents:
50
diff
changeset
|
65 MB_TIMEVAL_EQ(&visit->tmo, tmo)) |
| 39 | 66 break; |
| 67 last = visit; | |
| 68 } | |
| 69 | |
| 70 if(last == NULL) | |
| 71 STAILQ_INS(tman->timers, mb_timer_t, next, timer); | |
| 72 else if(visit == NULL) | |
| 73 STAILQ_INS_TAIL(tman->timers, mb_timer_t, next, timer); | |
| 74 else | |
| 75 STAILQ_INS_AFTER(mb_timer_t, next, timer, last); | |
| 76 | |
| 77 return timer; | |
| 78 } | |
| 79 | |
| 80 int mb_tman_remove(mb_tman_t *tman, mb_timer_t *timer) { | |
| 81 STAILQ_REMOVE(tman->timers, mb_timer_t, next, timer); | |
| 82 elmpool_elm_free(tman->timer_pool, timer); | |
| 83 | |
| 84 return OK; | |
| 85 } | |
| 86 | |
| 50 | 87 /*! \brief Get how long to next timeout from this monent. |
| 88 * | |
| 89 * \return 0 for having next timeout, -1 for not more timeout. | |
| 90 */ | |
| 39 | 91 int mb_tman_next_timeout(mb_tman_t *tman, |
| 41 | 92 const mb_timeval_t *now, mb_timeval_t *tmo_after) { |
| 39 | 93 mb_timer_t *timer; |
| 94 | |
| 95 timer = STAILQ_HEAD(tman->timers); | |
| 96 if(timer == NULL) | |
| 97 return ERR; | |
| 98 | |
| 41 | 99 if(!MB_TIMEVAL_LATER(&timer->tmo, now)) { |
| 100 memset(tmo_after, 0, sizeof(mb_timeval_t)); | |
| 39 | 101 return OK; |
| 102 } | |
| 103 | |
|
43
6270230b9248
Use MB_TIMEVAL_CP() instead of memcpy
Thinker K.F. Li <thinker@branda.to>
parents:
41
diff
changeset
|
104 MB_TIMEVAL_CP(tmo_after, &timer->tmo); |
| 41 | 105 MB_TIMEVAL_DIFF(tmo_after, now); |
| 39 | 106 |
| 107 return OK; | |
| 108 } | |
| 109 | |
| 41 | 110 int mb_tman_handle_timeout(mb_tman_t *tman, mb_timeval_t *now) { |
| 39 | 111 mb_timer_t *timer; |
| 112 | |
| 113 while((timer = STAILQ_HEAD(tman->timers)) != NULL){ | |
| 41 | 114 if(MB_TIMEVAL_LATER(&timer->tmo, now)) |
| 39 | 115 break; |
| 41 | 116 timer->hdlr(&timer->tmo, now, timer->arg); |
| 39 | 117 STAILQ_REMOVE(tman->timers, mb_timer_t, next, timer); |
| 118 elmpool_elm_free(tman->timer_pool, timer); | |
| 119 } | |
| 120 | |
| 121 return OK; | |
| 122 } |