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4 | typedef double ev_tstamp; |
4 | typedef double ev_tstamp; |
5 | |
5 | |
6 | /* eventmask, revents, events... */ |
6 | /* eventmask, revents, events... */ |
7 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
7 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
8 | #define EV_NONE 0 |
8 | #define EV_NONE 0x00 |
9 | #define EV_READ 1 |
9 | #define EV_READ 0x01 |
10 | #define EV_WRITE 2 |
10 | #define EV_WRITE 0x02 |
11 | #define EV_TIMEOUT 4 |
11 | #define EV_TIMEOUT 0x04 |
12 | #define EV_SIGNAL 8 |
12 | #define EV_SIGNAL 0x08 |
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13 | #define EV_IDLE 0x10 |
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14 | #define EV_CHECK 0x20 |
13 | |
15 | |
14 | /* shared by all watchers */ |
16 | /* shared by all watchers */ |
15 | #define EV_WATCHER(type) \ |
17 | #define EV_WATCHER(type) \ |
16 | int active; /* private */ \ |
18 | int active; /* private */ \ |
17 | int pending; /* private */ \ |
19 | int pending; /* private */ \ |
18 | void *data; /* rw */ \ |
20 | void *data; /* rw */ \ |
19 | void (*cb)(struct type *, int revents) /* rw */ |
21 | void (*cb)(struct type *, int revents) /* rw */ /* gets invoked with an eventmask */ |
20 | |
22 | |
21 | #define EV_WATCHER_LIST(type) \ |
23 | #define EV_WATCHER_LIST(type) \ |
22 | EV_WATCHER (type); \ |
24 | EV_WATCHER (type); \ |
23 | struct type *next /* private */ |
25 | struct type *next /* private */ |
24 | |
26 | |
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27 | /* invoked at a specific time or after a specific time, repeatable */ |
25 | struct ev_timer |
28 | struct ev_timer |
26 | { |
29 | { |
27 | EV_WATCHER_LIST (ev_timer); |
30 | EV_WATCHER_LIST (ev_timer); |
28 | |
31 | |
29 | ev_tstamp at; /* ro */ |
32 | ev_tstamp at; /* private */ |
30 | ev_tstamp repeat; /* rw */ |
33 | ev_tstamp repeat; /* rw */ |
31 | unsigned char is_abs; /* rw */ |
34 | unsigned char is_abs; /* ro */ |
32 | }; |
35 | }; |
33 | |
36 | |
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37 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
34 | struct ev_io |
38 | struct ev_io |
35 | { |
39 | { |
36 | EV_WATCHER_LIST (ev_io); |
40 | EV_WATCHER_LIST (ev_io); |
37 | |
41 | |
38 | int fd; /* ro */ |
42 | int fd; /* ro */ |
39 | int events; /* ro */ |
43 | int events; /* ro */ |
40 | }; |
44 | }; |
41 | |
45 | |
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46 | /* invoked when the given signal has been received */ |
42 | struct ev_signal |
47 | struct ev_signal |
43 | { |
48 | { |
44 | EV_WATCHER_LIST (ev_signal); |
49 | EV_WATCHER_LIST (ev_signal); |
45 | |
50 | |
46 | int signum; /* ro */ |
51 | int signum; /* ro */ |
47 | }; |
52 | }; |
48 | |
53 | |
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54 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
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55 | struct ev_idle |
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56 | { |
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57 | EV_WATCHER (ev_idle); |
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58 | }; |
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59 | |
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60 | /* invoked for each run of the mainloop, just before the next blocking vall is initiated */ |
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61 | struct ev_check |
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62 | { |
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63 | EV_WATCHER (ev_check); |
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64 | }; |
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65 | |
49 | #define EVMETHOD_NONE 0 |
66 | #define EVMETHOD_NONE 0 |
50 | #define EVMETHOD_SELECT 1 |
67 | #define EVMETHOD_SELECT 1 |
51 | #define EVMETHOD_EPOLL 2 |
68 | #define EVMETHOD_EPOLL 2 |
52 | int ev_init (int flags); |
69 | int ev_init (int flags); /* returns ev_method */ |
53 | extern int ev_method; |
70 | extern int ev_method; |
54 | |
71 | |
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72 | /* these three calls are suitable for plugging into pthread_atfork */ |
55 | void ev_prefork (void); |
73 | void ev_prefork (void); |
56 | void ev_postfork_parent (void); |
74 | void ev_postfork_parent (void); |
57 | void ev_postfork_child (void); |
75 | void ev_postfork_child (void); |
58 | |
76 | |
59 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
77 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
60 | ev_tstamp ev_time (void); |
78 | ev_tstamp ev_time (void); |
61 | |
79 | |
62 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
80 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
63 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
81 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
64 | int ev_loop (int flags); |
82 | void ev_loop (int flags); |
65 | extern int ev_loop_done; /* set to 1 to break out of event loop */ |
83 | extern int ev_loop_done; /* set to 1 to break out of event loop */ |
66 | |
84 | |
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85 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
67 | #define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0) |
86 | #define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0) |
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87 | |
68 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
88 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
69 | #define evtimer_set_rel(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); (ev)->is_abs = 0; } while (0) |
89 | #define evtimer_set_rel(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); (ev)->is_abs = 0; } while (0) |
70 | #define evtimer_set_abs(ev,at_,repeat_) do { (ev)->at = (at_); (ev)->repeat = (repeat_); (ev)->is_abs = 1; } while (0) |
90 | #define evtimer_set_abs(ev,at_,repeat_) do { (ev)->at = (at_); (ev)->repeat = (repeat_); (ev)->is_abs = 1; } while (0) |
71 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
91 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
72 | |
92 | |
73 | #define ev_is_active(ev) (0 + (ev)->active) /* wether the watcher has been started */ |
93 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
74 | |
94 | |
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95 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
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96 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
75 | void evio_start (struct ev_io *w); |
97 | void evio_start (struct ev_io *w); |
76 | void evio_stop (struct ev_io *w); |
98 | void evio_stop (struct ev_io *w); |
77 | |
99 | |
78 | void evtimer_start (struct ev_timer *w); |
100 | void evtimer_start (struct ev_timer *w); |
79 | void evtimer_stop (struct ev_timer *w); |
101 | void evtimer_stop (struct ev_timer *w); |
80 | |
102 | |
81 | void evsignal_start (struct ev_signal *w); |
103 | void evsignal_start (struct ev_signal *w); |
82 | void evsignal_stop (struct ev_signal *w); |
104 | void evsignal_stop (struct ev_signal *w); |
83 | |
105 | |
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106 | void evidle_start (struct ev_idle *w); |
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107 | void evidle_stop (struct ev_idle *w); |
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108 | |
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109 | void evcheck_start (struct ev_check *w); |
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110 | void evcheck_stop (struct ev_check *w); |
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111 | |
84 | #endif |
112 | #endif |
85 | |
113 | |