[9c7a701] | 1 | #include "owl.h" |
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| 2 | |
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[1895c29] | 3 | static int dispatch_active = 0; |
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[4f2166b] | 4 | static int psa_active = 0; |
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[3ecd78b] | 5 | static int loop_active = 0; |
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[1895c29] | 6 | |
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[9cf96c8] | 7 | int _owl_select_timer_cmp(const owl_timer *t1, const owl_timer *t2) { |
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[ca1fc33a] | 8 | return t1->time - t2->time; |
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[b7bb454] | 9 | } |
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| 10 | |
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[9cf96c8] | 11 | int _owl_select_timer_eq(const owl_timer *t1, const owl_timer *t2) { |
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[ca1fc33a] | 12 | return t1 == t2; |
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[b7bb454] | 13 | } |
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| 14 | |
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[c6adf17] | 15 | owl_timer *owl_select_add_timer(const char* name, int after, int interval, void (*cb)(owl_timer *, void *), void (*destroy)(owl_timer*), void *data) |
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[b7bb454] | 16 | { |
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[ca1fc33a] | 17 | owl_timer *t = owl_malloc(sizeof(owl_timer)); |
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[58d1f8a] | 18 | GList **timers = owl_global_get_timerlist(&g); |
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[b7bb454] | 19 | |
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[ca1fc33a] | 20 | t->time = time(NULL) + after; |
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| 21 | t->interval = interval; |
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| 22 | t->callback = cb; |
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[c675b39] | 23 | t->destroy = destroy; |
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[ca1fc33a] | 24 | t->data = data; |
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[c6adf17] | 25 | t->name = name ? owl_strdup(name) : NULL; |
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[b7bb454] | 26 | |
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[58d1f8a] | 27 | *timers = g_list_insert_sorted(*timers, t, |
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| 28 | (GCompareFunc)_owl_select_timer_cmp); |
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[ca1fc33a] | 29 | return t; |
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[b7bb454] | 30 | } |
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| 31 | |
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| 32 | void owl_select_remove_timer(owl_timer *t) |
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| 33 | { |
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[58d1f8a] | 34 | GList **timers = owl_global_get_timerlist(&g); |
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| 35 | if (t && g_list_find(*timers, t)) { |
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| 36 | *timers = g_list_remove(*timers, t); |
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[c675b39] | 37 | if(t->destroy) { |
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| 38 | t->destroy(t); |
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| 39 | } |
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[c6adf17] | 40 | owl_free(t->name); |
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[ca1fc33a] | 41 | owl_free(t); |
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| 42 | } |
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[b7bb454] | 43 | } |
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| 44 | |
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[3a84694] | 45 | void owl_select_process_timers(struct timespec *timeout) |
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[b7bb454] | 46 | { |
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[ca1fc33a] | 47 | time_t now = time(NULL); |
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[58d1f8a] | 48 | GList **timers = owl_global_get_timerlist(&g); |
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[b7bb454] | 49 | |
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[58d1f8a] | 50 | while(*timers) { |
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| 51 | owl_timer *t = (*timers)->data; |
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[c675b39] | 52 | int remove = 0; |
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[b7bb454] | 53 | |
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[ca1fc33a] | 54 | if(t->time > now) |
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| 55 | break; |
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[b7bb454] | 56 | |
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[ca1fc33a] | 57 | /* Reschedule if appropriate */ |
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| 58 | if(t->interval > 0) { |
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| 59 | t->time = now + t->interval; |
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[58d1f8a] | 60 | *timers = g_list_remove(*timers, t); |
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| 61 | *timers = g_list_insert_sorted(*timers, t, |
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| 62 | (GCompareFunc)_owl_select_timer_cmp); |
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[ca1fc33a] | 63 | } else { |
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[c675b39] | 64 | remove = 1; |
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[ca1fc33a] | 65 | } |
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[b7bb454] | 66 | |
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[ca1fc33a] | 67 | /* Do the callback */ |
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[c675b39] | 68 | t->callback(t, t->data); |
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| 69 | if(remove) { |
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| 70 | owl_select_remove_timer(t); |
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| 71 | } |
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[ca1fc33a] | 72 | } |
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[b7bb454] | 73 | |
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[58d1f8a] | 74 | if(*timers) { |
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| 75 | owl_timer *t = (*timers)->data; |
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[ca1fc33a] | 76 | timeout->tv_sec = t->time - now; |
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[58d1f8a] | 77 | if (timeout->tv_sec > 60) |
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| 78 | timeout->tv_sec = 60; |
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| 79 | } else { |
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| 80 | timeout->tv_sec = 60; |
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[ca1fc33a] | 81 | } |
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[b7bb454] | 82 | |
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[3a84694] | 83 | timeout->tv_nsec = 0; |
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[b7bb454] | 84 | } |
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| 85 | |
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[df0138f] | 86 | static const owl_io_dispatch *owl_select_find_io_dispatch_by_fd(const int fd) |
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| 87 | { |
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| 88 | int i, len; |
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| 89 | const owl_list *dl; |
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| 90 | owl_io_dispatch *d; |
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| 91 | dl = owl_global_get_io_dispatch_list(&g); |
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| 92 | len = owl_list_get_size(dl); |
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| 93 | for(i = 0; i < len; i++) { |
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| 94 | d = owl_list_get_element(dl, i); |
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| 95 | if (d->fd == fd) return d; |
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| 96 | } |
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| 97 | return NULL; |
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| 98 | } |
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| 99 | |
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| 100 | static int owl_select_find_io_dispatch(const owl_io_dispatch *in) |
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| 101 | { |
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| 102 | int i, len; |
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| 103 | const owl_list *dl; |
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| 104 | |
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| 105 | if (in != NULL) { |
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| 106 | dl = owl_global_get_io_dispatch_list(&g); |
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| 107 | len = owl_list_get_size(dl); |
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| 108 | for(i = 0; i < len; i++) { |
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| 109 | const owl_io_dispatch *d = owl_list_get_element(dl, i); |
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| 110 | if (d == in) return i; |
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| 111 | } |
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| 112 | } |
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| 113 | return -1; |
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| 114 | } |
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| 115 | |
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| 116 | void owl_select_remove_io_dispatch(const owl_io_dispatch *in) |
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| 117 | { |
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| 118 | int elt; |
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| 119 | if (in != NULL) { |
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| 120 | elt = owl_select_find_io_dispatch(in); |
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| 121 | if (elt != -1) { |
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| 122 | owl_list *dl = owl_global_get_io_dispatch_list(&g); |
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| 123 | owl_io_dispatch *d = owl_list_get_element(dl, elt); |
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| 124 | if (dispatch_active) |
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| 125 | d->needs_gc = 1; |
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| 126 | else { |
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| 127 | owl_list_remove_element(dl, elt); |
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| 128 | if (d->destroy) |
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| 129 | d->destroy(d); |
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| 130 | owl_free(d); |
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| 131 | } |
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| 132 | } |
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| 133 | } |
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| 134 | } |
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| 135 | |
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| 136 | void owl_select_io_dispatch_gc(void) |
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| 137 | { |
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| 138 | int i; |
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| 139 | owl_list *dl; |
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| 140 | |
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| 141 | dl = owl_global_get_io_dispatch_list(&g); |
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| 142 | /* |
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| 143 | * Count down so we aren't set off by removing items from the list |
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| 144 | * during the iteration. |
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| 145 | */ |
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| 146 | for(i = owl_list_get_size(dl) - 1; i >= 0; i--) { |
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| 147 | owl_io_dispatch *d = owl_list_get_element(dl, i); |
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| 148 | if(d->needs_gc) { |
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| 149 | owl_select_remove_io_dispatch(d); |
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| 150 | } |
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| 151 | } |
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| 152 | } |
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| 153 | |
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| 154 | /* Each FD may have at most one dispatcher. |
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| 155 | * If a new dispatch is added for an FD, the old one is removed. |
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| 156 | * mode determines what types of events are watched for, and may be any combination of: |
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| 157 | * OWL_IO_READ, OWL_IO_WRITE, OWL_IO_EXCEPT |
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| 158 | */ |
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| 159 | const owl_io_dispatch *owl_select_add_io_dispatch(int fd, int mode, void (*cb)(const owl_io_dispatch *, void *), void (*destroy)(const owl_io_dispatch *), void *data) |
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| 160 | { |
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| 161 | owl_io_dispatch *d = owl_malloc(sizeof(owl_io_dispatch)); |
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| 162 | owl_list *dl = owl_global_get_io_dispatch_list(&g); |
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| 163 | |
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| 164 | d->fd = fd; |
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| 165 | d->needs_gc = 0; |
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| 166 | d->mode = mode; |
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| 167 | d->callback = cb; |
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| 168 | d->destroy = destroy; |
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| 169 | d->data = data; |
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| 170 | |
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| 171 | owl_select_remove_io_dispatch(owl_select_find_io_dispatch_by_fd(fd)); |
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| 172 | owl_list_append_element(dl, d); |
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| 173 | |
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| 174 | return d; |
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| 175 | } |
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| 176 | |
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| 177 | int owl_select_prepare_io_dispatch_fd_sets(fd_set *rfds, fd_set *wfds, fd_set *efds) { |
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| 178 | int i, len, max_fd; |
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| 179 | owl_io_dispatch *d; |
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| 180 | owl_list *dl = owl_global_get_io_dispatch_list(&g); |
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| 181 | |
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| 182 | max_fd = 0; |
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| 183 | len = owl_list_get_size(dl); |
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| 184 | for (i = 0; i < len; i++) { |
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| 185 | d = owl_list_get_element(dl, i); |
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| 186 | if (d->mode & (OWL_IO_READ | OWL_IO_WRITE | OWL_IO_EXCEPT)) { |
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| 187 | if (max_fd < d->fd) max_fd = d->fd; |
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| 188 | if (d->mode & OWL_IO_READ) FD_SET(d->fd, rfds); |
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| 189 | if (d->mode & OWL_IO_WRITE) FD_SET(d->fd, wfds); |
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| 190 | if (d->mode & OWL_IO_EXCEPT) FD_SET(d->fd, efds); |
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| 191 | } |
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| 192 | } |
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| 193 | return max_fd + 1; |
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| 194 | } |
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| 195 | |
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| 196 | void owl_select_io_dispatch(const fd_set *rfds, const fd_set *wfds, const fd_set *efds, const int max_fd) |
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| 197 | { |
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| 198 | int i, len; |
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| 199 | owl_io_dispatch *d; |
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| 200 | owl_list *dl = owl_global_get_io_dispatch_list(&g); |
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| 201 | |
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| 202 | dispatch_active = 1; |
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| 203 | len = owl_list_get_size(dl); |
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| 204 | for (i = 0; i < len; i++) { |
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| 205 | d = owl_list_get_element(dl, i); |
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| 206 | if (d->fd < max_fd && d->callback != NULL && |
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| 207 | ((d->mode & OWL_IO_READ && FD_ISSET(d->fd, rfds)) || |
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| 208 | (d->mode & OWL_IO_WRITE && FD_ISSET(d->fd, wfds)) || |
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| 209 | (d->mode & OWL_IO_EXCEPT && FD_ISSET(d->fd, efds)))) { |
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| 210 | d->callback(d, d->data); |
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| 211 | } |
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| 212 | } |
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| 213 | dispatch_active = 0; |
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| 214 | owl_select_io_dispatch_gc(); |
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| 215 | } |
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| 216 | |
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| 217 | int owl_select_add_perl_io_dispatch(int fd, int mode, SV *cb) |
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| 218 | { |
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| 219 | const owl_io_dispatch *d = owl_select_find_io_dispatch_by_fd(fd); |
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| 220 | if (d != NULL && d->callback != owl_perlconfig_io_dispatch) { |
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| 221 | /* Don't mess with non-perl dispatch functions from here. */ |
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| 222 | return 1; |
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| 223 | } |
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| 224 | owl_select_add_io_dispatch(fd, mode, owl_perlconfig_io_dispatch, owl_perlconfig_io_dispatch_destroy, cb); |
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| 225 | return 0; |
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| 226 | } |
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| 227 | |
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| 228 | int owl_select_remove_perl_io_dispatch(int fd) |
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| 229 | { |
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| 230 | const owl_io_dispatch *d = owl_select_find_io_dispatch_by_fd(fd); |
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| 231 | if (d != NULL && d->callback == owl_perlconfig_io_dispatch) { |
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| 232 | /* Only remove perl io dispatchers from here. */ |
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| 233 | owl_select_remove_io_dispatch(d); |
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| 234 | return 0; |
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| 235 | } |
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| 236 | return 1; |
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| 237 | } |
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| 238 | |
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[2f69081] | 239 | int owl_select_aim_hack(fd_set *rfds, fd_set *wfds) |
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[9c7a701] | 240 | { |
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| 241 | aim_conn_t *cur; |
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| 242 | aim_session_t *sess; |
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| 243 | int max_fd; |
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| 244 | |
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| 245 | max_fd = 0; |
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| 246 | sess = owl_global_get_aimsess(&g); |
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| 247 | for (cur = sess->connlist, max_fd = 0; cur; cur = cur->next) { |
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| 248 | if (cur->fd != -1) { |
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[2f69081] | 249 | FD_SET(cur->fd, rfds); |
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| 250 | if (cur->status & AIM_CONN_STATUS_INPROGRESS) { |
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| 251 | /* Yes, we're checking writable sockets here. Without it, AIM |
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| 252 | login is really slow. */ |
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| 253 | FD_SET(cur->fd, wfds); |
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| 254 | } |
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| 255 | |
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[9c7a701] | 256 | if (cur->fd > max_fd) |
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| 257 | max_fd = cur->fd; |
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| 258 | } |
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| 259 | } |
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| 260 | return max_fd; |
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| 261 | } |
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| 262 | |
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[5a35c708] | 263 | void owl_process_input_char(owl_input j) |
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| 264 | { |
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| 265 | int ret; |
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| 266 | |
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| 267 | owl_global_set_lastinputtime(&g, time(NULL)); |
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| 268 | ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j); |
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| 269 | if (ret!=0 && ret!=1) { |
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| 270 | owl_function_makemsg("Unable to handle keypress"); |
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| 271 | } |
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| 272 | } |
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| 273 | |
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[40bda84] | 274 | void owl_select_mask_signals(sigset_t *oldmask) { |
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| 275 | sigset_t set; |
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| 276 | |
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| 277 | sigemptyset(&set); |
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[c3031f3] | 278 | sigaddset(&set, SIGWINCH); |
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| 279 | sigaddset(&set, SIGALRM); |
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| 280 | sigaddset(&set, SIGPIPE); |
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| 281 | sigaddset(&set, SIGTERM); |
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| 282 | sigaddset(&set, SIGHUP); |
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[40bda84] | 283 | sigaddset(&set, SIGINT); |
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| 284 | sigprocmask(SIG_BLOCK, &set, oldmask); |
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| 285 | } |
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| 286 | |
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| 287 | void owl_select_handle_intr(sigset_t *restore) |
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[3a84694] | 288 | { |
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| 289 | owl_input in; |
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[0cb6c26] | 290 | |
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| 291 | owl_global_unset_interrupted(&g); |
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[40bda84] | 292 | |
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| 293 | sigprocmask(SIG_SETMASK, restore, NULL); |
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[0cb6c26] | 294 | |
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[3a84694] | 295 | in.ch = in.uch = owl_global_get_startup_tio(&g)->c_cc[VINTR]; |
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| 296 | owl_process_input_char(in); |
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| 297 | } |
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| 298 | |
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[4f2166b] | 299 | owl_ps_action *owl_select_add_pre_select_action(int (*cb)(owl_ps_action *, void *), void (*destroy)(owl_ps_action *), void *data) |
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| 300 | { |
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| 301 | owl_ps_action *a = owl_malloc(sizeof(owl_ps_action)); |
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| 302 | owl_list *psa_list = owl_global_get_psa_list(&g); |
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| 303 | a->needs_gc = 0; |
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| 304 | a->callback = cb; |
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| 305 | a->destroy = destroy; |
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| 306 | a->data = data; |
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| 307 | owl_list_append_element(psa_list, a); |
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| 308 | return a; |
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| 309 | } |
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| 310 | |
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| 311 | void owl_select_psa_gc(void) |
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| 312 | { |
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| 313 | int i; |
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| 314 | owl_list *psa_list; |
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| 315 | owl_ps_action *a; |
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| 316 | |
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| 317 | psa_list = owl_global_get_psa_list(&g); |
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| 318 | for (i = owl_list_get_size(psa_list) - 1; i >= 0; i--) { |
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| 319 | a = owl_list_get_element(psa_list, i); |
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| 320 | if (a->needs_gc) { |
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| 321 | owl_list_remove_element(psa_list, i); |
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| 322 | if (a->destroy) { |
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| 323 | a->destroy(a); |
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| 324 | } |
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| 325 | owl_free(a); |
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| 326 | } |
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| 327 | } |
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| 328 | } |
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| 329 | |
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| 330 | void owl_select_remove_pre_select_action(owl_ps_action *a) |
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| 331 | { |
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| 332 | a->needs_gc = 1; |
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| 333 | if (!psa_active) |
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| 334 | owl_select_psa_gc(); |
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| 335 | } |
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| 336 | |
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| 337 | int owl_select_do_pre_select_actions(void) |
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| 338 | { |
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| 339 | int i, len, ret; |
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| 340 | owl_list *psa_list; |
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| 341 | |
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| 342 | psa_active = 1; |
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| 343 | ret = 0; |
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| 344 | psa_list = owl_global_get_psa_list(&g); |
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| 345 | len = owl_list_get_size(psa_list); |
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| 346 | for (i = 0; i < len; i++) { |
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| 347 | owl_ps_action *a = owl_list_get_element(psa_list, i); |
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| 348 | if (a->callback != NULL && a->callback(a, a->data)) { |
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| 349 | ret = 1; |
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| 350 | } |
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| 351 | } |
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| 352 | psa_active = 0; |
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| 353 | owl_select_psa_gc(); |
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| 354 | return ret; |
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| 355 | } |
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| 356 | |
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[c79a047] | 357 | void owl_select(void) |
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[9c7a701] | 358 | { |
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[df0138f] | 359 | int i, max_fd, max_fd2, aim_done, ret; |
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[9c7a701] | 360 | fd_set r; |
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[df0138f] | 361 | fd_set w; |
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[9c7a701] | 362 | fd_set e; |
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[2f69081] | 363 | fd_set aim_rfds, aim_wfds; |
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[3a84694] | 364 | struct timespec timeout; |
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[0cb6c26] | 365 | sigset_t mask; |
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[9c7a701] | 366 | |
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[b7bb454] | 367 | owl_select_process_timers(&timeout); |
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[9c7a701] | 368 | |
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[40bda84] | 369 | owl_select_mask_signals(&mask); |
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| 370 | |
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[3a84694] | 371 | if(owl_global_is_interrupted(&g)) { |
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[40bda84] | 372 | owl_select_handle_intr(&mask); |
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[3a84694] | 373 | return; |
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| 374 | } |
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[df0138f] | 375 | FD_ZERO(&r); |
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| 376 | FD_ZERO(&w); |
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| 377 | FD_ZERO(&e); |
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[3a84694] | 378 | |
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[6fc40a7] | 379 | max_fd = owl_select_prepare_io_dispatch_fd_sets(&r, &w, &e); |
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[9c7a701] | 380 | |
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| 381 | /* AIM HACK: |
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| 382 | * |
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| 383 | * The problem - I'm not sure where to hook into the owl/faim |
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| 384 | * interface to keep track of when the AIM socket(s) open and |
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| 385 | * close. In particular, the bosconn thing throws me off. So, |
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| 386 | * rather than register particular dispatchers for AIM, I look up |
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| 387 | * the relevant FDs and add them to select's watch lists, then |
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| 388 | * check for them individually before moving on to the other |
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| 389 | * dispatchers. --asedeno |
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| 390 | */ |
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| 391 | aim_done = 1; |
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[2f69081] | 392 | FD_ZERO(&aim_rfds); |
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| 393 | FD_ZERO(&aim_wfds); |
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[9c7a701] | 394 | if (owl_global_is_doaimevents(&g)) { |
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| 395 | aim_done = 0; |
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[df0138f] | 396 | max_fd2 = owl_select_aim_hack(&aim_rfds, &aim_wfds); |
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| 397 | if (max_fd < max_fd2) max_fd = max_fd2; |
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| 398 | for(i = 0; i <= max_fd2; i++) { |
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[2f69081] | 399 | if (FD_ISSET(i, &aim_rfds)) { |
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[9c7a701] | 400 | FD_SET(i, &r); |
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| 401 | FD_SET(i, &e); |
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| 402 | } |
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[df0138f] | 403 | if (FD_ISSET(i, &aim_wfds)) { |
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| 404 | FD_SET(i, &w); |
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| 405 | FD_SET(i, &e); |
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| 406 | } |
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[9c7a701] | 407 | } |
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| 408 | } |
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| 409 | /* END AIM HACK */ |
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[2f69081] | 410 | |
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[4f2166b] | 411 | if (owl_select_do_pre_select_actions()) { |
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| 412 | timeout.tv_sec = 0; |
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| 413 | timeout.tv_nsec = 0; |
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| 414 | } |
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| 415 | |
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[df0138f] | 416 | ret = pselect(max_fd+1, &r, &w, &e, &timeout, &mask); |
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[3a84694] | 417 | |
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| 418 | if(ret < 0 && errno == EINTR) { |
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| 419 | if(owl_global_is_interrupted(&g)) { |
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[40bda84] | 420 | owl_select_handle_intr(NULL); |
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[3a84694] | 421 | } |
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[40bda84] | 422 | sigprocmask(SIG_SETMASK, &mask, NULL); |
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[3a84694] | 423 | return; |
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| 424 | } |
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| 425 | |
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[40bda84] | 426 | sigprocmask(SIG_SETMASK, &mask, NULL); |
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[3a84694] | 427 | |
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| 428 | if(ret > 0) { |
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[7ca5d3e] | 429 | /* AIM HACK: process all AIM events at once. */ |
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| 430 | for(i = 0; !aim_done && i <= max_fd; i++) { |
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[df0138f] | 431 | if (FD_ISSET(i, &r) || FD_ISSET(i, &w) || FD_ISSET(i, &e)) { |
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[7ca5d3e] | 432 | if (FD_ISSET(i, &aim_rfds) || FD_ISSET(i, &aim_wfds)) { |
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[9c7a701] | 433 | owl_process_aim(); |
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| 434 | aim_done = 1; |
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| 435 | } |
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| 436 | } |
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| 437 | } |
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[df0138f] | 438 | owl_select_io_dispatch(&r, &w, &e, max_fd); |
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[9c7a701] | 439 | } |
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| 440 | } |
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[3ecd78b] | 441 | |
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| 442 | void owl_select_run_loop(void) |
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| 443 | { |
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| 444 | loop_active = 1; |
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| 445 | while (loop_active) { |
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| 446 | owl_select(); |
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| 447 | } |
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| 448 | } |
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| 449 | |
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| 450 | void owl_select_quit_loop(void) |
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| 451 | { |
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| 452 | loop_active = 0; |
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| 453 | } |
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