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28 | */ |
28 | */ |
29 | |
29 | |
30 | #ifndef EV_H |
30 | #ifndef EV_H |
31 | #define EV_H |
31 | #define EV_H |
32 | |
32 | |
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33 | #ifdef __cplusplus |
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34 | extern "C" { |
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35 | #endif |
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36 | |
33 | typedef double ev_tstamp; |
37 | typedef double ev_tstamp; |
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38 | |
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39 | /* these priorities are inclusive, higher priorities will be called earlier */ |
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40 | #ifndef EV_MINPRI |
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41 | # define EV_MINPRI -2 |
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42 | #endif |
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43 | #ifndef EV_MAXPRI |
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44 | # define EV_MAXPRI +2 |
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45 | #endif |
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46 | |
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47 | /* support multiple event loops? */ |
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48 | #ifdef EV_MULTIPLICITY |
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49 | struct ev_loop; |
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50 | # define EV_P struct ev_loop *loop |
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51 | # define EV_P_ EV_P, |
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52 | # define EV_A loop |
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53 | # define EV_A_ EV_A, |
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54 | #else |
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55 | # define EV_P void |
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56 | # define EV_P_ |
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57 | # define EV_A |
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58 | # define EV_A_ |
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59 | |
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60 | #endif |
34 | |
61 | |
35 | /* eventmask, revents, events... */ |
62 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
63 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x00 |
64 | #define EV_NONE 0x00 |
38 | #define EV_READ 0x01 |
65 | #define EV_READ 0x01 |
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66 | |
93 | |
67 | /* shared by all watchers */ |
94 | /* shared by all watchers */ |
68 | #define EV_WATCHER(type) \ |
95 | #define EV_WATCHER(type) \ |
69 | int active; /* private */ \ |
96 | int active; /* private */ \ |
70 | int pending; /* private */ \ |
97 | int pending; /* private */ \ |
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98 | int priority; /* ro */ \ |
71 | EV_COMMON; /* rw */ \ |
99 | EV_COMMON; /* rw */ \ |
72 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
100 | void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
73 | |
101 | |
74 | #define EV_WATCHER_LIST(type) \ |
102 | #define EV_WATCHER_LIST(type) \ |
75 | EV_WATCHER (type); \ |
103 | EV_WATCHER (type); \ |
76 | struct type *next /* private */ |
104 | struct ev_watcher_list *next /* private */ |
77 | |
105 | |
78 | #define EV_WATCHER_TIME(type) \ |
106 | #define EV_WATCHER_TIME(type) \ |
79 | EV_WATCHER (type); \ |
107 | EV_WATCHER (type); \ |
80 | ev_tstamp at /* private */ |
108 | ev_tstamp at /* private */ |
81 | |
109 | |
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153 | EV_WATCHER (ev_check); |
181 | EV_WATCHER (ev_check); |
154 | }; |
182 | }; |
155 | |
183 | |
156 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
184 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
157 | /* revent EV_CHILD */ |
185 | /* revent EV_CHILD */ |
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186 | /* does not support priorities */ |
158 | struct ev_child |
187 | struct ev_child |
159 | { |
188 | { |
160 | EV_WATCHER_LIST (ev_child); |
189 | EV_WATCHER_LIST (ev_child); |
161 | |
190 | |
162 | int pid; /* ro */ |
191 | int pid; /* ro */ |
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192 | int rpid; /* rw, holds the received pid */ |
163 | int status; /* rw, holds the exit status, use the macros from sys/wait.h */ |
193 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
164 | }; |
194 | }; |
165 | |
195 | |
166 | #define EVMETHOD_NONE 0 |
196 | #define EVMETHOD_AUTO 0 /* consults environment */ |
167 | #define EVMETHOD_SELECT 1 |
197 | #define EVMETHOD_SELECT 1 |
168 | #define EVMETHOD_EPOLL 2 |
198 | #define EVMETHOD_POLL 2 |
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199 | #define EVMETHOD_EPOLL 4 |
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200 | #define EVMETHOD_KQUEUE 8 |
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201 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
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202 | #define EVMETHOD_PORT 32 /* NYI */ |
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203 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
169 | #if EV_PROTOTYPES |
204 | #if EV_PROTOTYPES |
170 | extern int ev_method; |
205 | int ev_method (EV_P); |
171 | int ev_init (int flags); /* returns ev_method */ |
206 | int ev_init (EV_P_ int methods); /* returns ev_method */ |
172 | int ev_version_major (void); |
207 | int ev_version_major (void); |
173 | int ev_version_minor (void); |
208 | int ev_version_minor (void); |
174 | |
209 | |
175 | /* these three calls are suitable for plugging into pthread_atfork */ |
210 | /* these three calls are suitable for plugging into pthread_atfork */ |
176 | void ev_prefork (void); |
211 | void ev_fork_prepare (void); |
177 | void ev_postfork_parent (void); |
212 | void ev_fork_parent (void); |
178 | void ev_postfork_child (void); |
213 | void ev_fork_child (void); |
179 | |
214 | |
180 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
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181 | ev_tstamp ev_time (void); |
215 | ev_tstamp ev_time (void); |
182 | #endif |
216 | #endif |
183 | |
217 | |
184 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
218 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
185 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
219 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
186 | #if EV_PROTOTYPES |
220 | #if EV_PROTOTYPES |
187 | void ev_loop (int flags); |
221 | void ev_loop (EV_P_ int flags); |
188 | extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
222 | void ev_unloop (EV_P_ int status); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
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223 | |
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224 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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225 | |
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226 | /* |
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227 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
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228 | * keeps one reference. if you have a long-runing watcher you never unregister that |
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229 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
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230 | */ |
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231 | void ev_ref (EV_P); |
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232 | void ev_unref (EV_P); |
189 | |
233 | |
190 | /* convinience function, wait for a single event, without registering an event watcher */ |
234 | /* convinience function, wait for a single event, without registering an event watcher */ |
191 | /* if timeout is < 0, do wait indefinitely */ |
235 | /* if timeout is < 0, do wait indefinitely */ |
192 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
236 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
193 | #endif |
237 | #endif |
194 | |
238 | |
195 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
239 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
196 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
240 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
197 | #define ev_watcher_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) |
241 | #define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0) |
198 | |
242 | |
199 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
243 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
200 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
244 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
201 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
245 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
202 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
246 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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212 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
256 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
213 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
257 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
214 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
258 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
215 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
259 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
216 | |
260 | |
217 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
261 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
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262 | #define ev_set_priority(ev,pri) (ev)->priority = pri |
218 | |
263 | |
219 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
264 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
220 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
265 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
221 | #if EV_PROTOTYPES |
266 | #if EV_PROTOTYPES |
222 | void ev_io_start (struct ev_io *w); |
267 | void ev_io_start (EV_P_ struct ev_io *w); |
223 | void ev_io_stop (struct ev_io *w); |
268 | void ev_io_stop (EV_P_ struct ev_io *w); |
224 | |
269 | |
225 | void ev_timer_start (struct ev_timer *w); |
270 | void ev_timer_start (EV_P_ struct ev_timer *w); |
226 | void ev_timer_stop (struct ev_timer *w); |
271 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
227 | void ev_timer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
272 | void ev_timer_again (EV_P_ struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
228 | |
273 | |
229 | void ev_periodic_start (struct ev_periodic *w); |
274 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
230 | void ev_periodic_stop (struct ev_periodic *w); |
275 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
231 | |
276 | |
232 | void ev_signal_start (struct ev_signal *w); |
277 | void ev_signal_start (EV_P_ struct ev_signal *w); |
233 | void ev_signal_stop (struct ev_signal *w); |
278 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
234 | |
279 | |
235 | void ev_idle_start (struct ev_idle *w); |
280 | void ev_idle_start (EV_P_ struct ev_idle *w); |
236 | void ev_idle_stop (struct ev_idle *w); |
281 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
237 | |
282 | |
238 | void ev_prepare_start (struct ev_prepare *w); |
283 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
239 | void ev_prepare_stop (struct ev_prepare *w); |
284 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
240 | |
285 | |
241 | void ev_check_start (struct ev_check *w); |
286 | void ev_check_start (EV_P_ struct ev_check *w); |
242 | void ev_check_stop (struct ev_check *w); |
287 | void ev_check_stop (EV_P_ struct ev_check *w); |
243 | |
288 | |
244 | void ev_child_start (struct ev_child *w); |
289 | void ev_child_start (EV_P_ struct ev_child *w); |
245 | void ev_child_stop (struct ev_child *w); |
290 | void ev_child_stop (EV_P_ struct ev_child *w); |
246 | #endif |
291 | #endif |
247 | |
292 | |
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293 | #ifdef __cplusplus |
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294 | } |
248 | #endif |
295 | #endif |
249 | |
296 | |
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297 | #endif |
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298 | |