… | |
… | |
28 | */ |
28 | */ |
29 | |
29 | |
30 | #ifndef EV_H |
30 | #ifndef EV_H |
31 | #define EV_H |
31 | #define EV_H |
32 | |
32 | |
|
|
33 | #ifdef __cplusplus |
|
|
34 | extern "C" { |
|
|
35 | #endif |
|
|
36 | |
33 | typedef double ev_tstamp; |
37 | typedef double ev_tstamp; |
34 | |
38 | |
|
|
39 | /* these priorities are inclusive, higher priorities will be called earlier */ |
|
|
40 | #ifndef EV_MINPRI |
|
|
41 | # define EV_MINPRI -2 |
|
|
42 | #endif |
|
|
43 | #ifndef EV_MAXPRI |
|
|
44 | # define EV_MAXPRI +2 |
|
|
45 | #endif |
|
|
46 | |
|
|
47 | #ifndef EV_MULTIPLICITY |
|
|
48 | # define EV_MULTIPLICITY 1 |
|
|
49 | #endif |
|
|
50 | |
|
|
51 | /* support multiple event loops? */ |
|
|
52 | #if EV_MULTIPLICITY |
|
|
53 | struct ev_loop; |
|
|
54 | # define EV_P struct ev_loop *loop |
|
|
55 | # define EV_P_ EV_P, |
|
|
56 | # define EV_A loop |
|
|
57 | # define EV_A_ EV_A, |
|
|
58 | #else |
|
|
59 | # define EV_P void |
|
|
60 | # define EV_P_ |
|
|
61 | # define EV_A |
|
|
62 | # define EV_A_ |
|
|
63 | #endif |
|
|
64 | |
35 | /* eventmask, revents, events... */ |
65 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
66 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x00 |
67 | #define EV_NONE 0x00 |
38 | #define EV_READ 0x01 |
68 | #define EV_READ 0x01 |
39 | #define EV_WRITE 0x02 |
69 | #define EV_WRITE 0x02 |
40 | #define EV_TIMEOUT 0x04 |
70 | #define EV_TIMEOUT 0x000100 |
|
|
71 | #define EV_PERIODIC 0x000200 |
41 | #define EV_SIGNAL 0x08 |
72 | #define EV_SIGNAL 0x000400 |
42 | #define EV_IDLE 0x10 |
73 | #define EV_IDLE 0x000800 |
43 | #define EV_CHECK 0x20 |
74 | #define EV_CHECK 0x001000 |
44 | #define EV_PREPARE 0x40 |
75 | #define EV_PREPARE 0x002000 |
45 | #define EV_ERROR (0x7f|0x80) |
76 | #define EV_CHILD 0x004000 |
|
|
77 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
46 | |
78 | |
47 | /* can be used to add custom fields to all watchers */ |
79 | /* can be used to add custom fields to all watchers */ |
48 | #ifndef EV_COMMON |
80 | #ifndef EV_COMMON |
49 | # define EV_COMMON void *data |
81 | # define EV_COMMON void *data |
50 | #endif |
82 | #endif |
51 | #ifndef EV_PROTOTYPES |
83 | #ifndef EV_PROTOTYPES |
52 | # define EV_PROTOTYPES 1 |
84 | # define EV_PROTOTYPES 1 |
53 | #endif |
85 | #endif |
|
|
86 | |
|
|
87 | #define EV_VERSION_MAJOR 1 |
|
|
88 | #define EV_VERSION_MINOR 1 |
54 | |
89 | |
55 | /* |
90 | /* |
56 | * struct member types: |
91 | * struct member types: |
57 | * private: you can look at them, but not change them, and they might not mean anything to you. |
92 | * private: you can look at them, but not change them, and they might not mean anything to you. |
58 | * ro: can be read anytime, but only changed when the watcher isn't active |
93 | * ro: can be read anytime, but only changed when the watcher isn't active |
… | |
… | |
61 | |
96 | |
62 | /* shared by all watchers */ |
97 | /* shared by all watchers */ |
63 | #define EV_WATCHER(type) \ |
98 | #define EV_WATCHER(type) \ |
64 | int active; /* private */ \ |
99 | int active; /* private */ \ |
65 | int pending; /* private */ \ |
100 | int pending; /* private */ \ |
|
|
101 | int priority; /* private */ \ |
66 | EV_COMMON; /* rw */ \ |
102 | EV_COMMON; /* rw */ \ |
67 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
103 | void (*cb)(EV_P_ struct type *, int revents); /* private */ /* gets invoked with an eventmask */ |
68 | |
104 | |
69 | #define EV_WATCHER_LIST(type) \ |
105 | #define EV_WATCHER_LIST(type) \ |
70 | EV_WATCHER (type); \ |
106 | EV_WATCHER (type); \ |
71 | struct type *next /* private */ |
107 | struct ev_watcher_list *next /* private */ |
72 | |
108 | |
73 | #define EV_WATCHER_TIME(type) \ |
109 | #define EV_WATCHER_TIME(type) \ |
74 | EV_WATCHER (type); \ |
110 | EV_WATCHER (type); \ |
75 | ev_tstamp at /* private */ |
111 | ev_tstamp at /* private */ |
76 | |
112 | |
… | |
… | |
88 | struct ev_watcher_time { |
124 | struct ev_watcher_time { |
89 | EV_WATCHER_TIME (ev_watcher_time); |
125 | EV_WATCHER_TIME (ev_watcher_time); |
90 | }; |
126 | }; |
91 | |
127 | |
92 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
128 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
|
|
129 | /* revent EV_TIMEOUT */ |
93 | struct ev_timer |
130 | struct ev_timer |
94 | { |
131 | { |
95 | EV_WATCHER_TIME (ev_timer); |
132 | EV_WATCHER_TIME (ev_timer); |
96 | |
133 | |
97 | ev_tstamp repeat; /* rw */ |
134 | ev_tstamp repeat; /* rw */ |
98 | }; |
135 | }; |
99 | |
136 | |
100 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
137 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
|
|
138 | /* revent EV_PERIODIC */ |
101 | struct ev_periodic |
139 | struct ev_periodic |
102 | { |
140 | { |
103 | EV_WATCHER_TIME (ev_periodic); |
141 | EV_WATCHER_TIME (ev_periodic); |
104 | |
142 | |
105 | ev_tstamp interval; /* rw */ |
143 | ev_tstamp interval; /* rw */ |
106 | }; |
144 | }; |
107 | |
145 | |
108 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
146 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
|
|
147 | /* revent EV_READ, EV_WRITE */ |
109 | struct ev_io |
148 | struct ev_io |
110 | { |
149 | { |
111 | EV_WATCHER_LIST (ev_io); |
150 | EV_WATCHER_LIST (ev_io); |
112 | |
151 | |
113 | int fd; /* ro */ |
152 | int fd; /* ro */ |
114 | int events; /* ro */ |
153 | int events; /* ro */ |
115 | }; |
154 | }; |
116 | |
155 | |
117 | /* invoked when the given signal has been received */ |
156 | /* invoked when the given signal has been received */ |
|
|
157 | /* revent EV_SIGNAL */ |
118 | struct ev_signal |
158 | struct ev_signal |
119 | { |
159 | { |
120 | EV_WATCHER_LIST (ev_signal); |
160 | EV_WATCHER_LIST (ev_signal); |
|
|
161 | #if EV_MULTIPLICITY |
|
|
162 | struct ev_loop *loop; |
|
|
163 | #endif |
121 | |
164 | |
122 | int signum; /* ro */ |
165 | int signum; /* ro */ |
123 | }; |
166 | }; |
124 | |
167 | |
125 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
168 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
|
|
169 | /* revent EV_IDLE */ |
126 | struct ev_idle |
170 | struct ev_idle |
127 | { |
171 | { |
128 | EV_WATCHER (ev_idle); |
172 | EV_WATCHER (ev_idle); |
129 | }; |
173 | }; |
130 | |
174 | |
131 | /* invoked for each run of the mainloop, just before the blocking call */ |
175 | /* invoked for each run of the mainloop, just before the blocking call */ |
132 | /* you can still change events in any way you like */ |
176 | /* you can still change events in any way you like */ |
|
|
177 | /* revent EV_PREPARE */ |
133 | struct ev_prepare |
178 | struct ev_prepare |
134 | { |
179 | { |
135 | EV_WATCHER (ev_prepare); |
180 | EV_WATCHER (ev_prepare); |
136 | }; |
181 | }; |
137 | |
182 | |
138 | /* invoked for each run of the mainloop, just after the blocking call */ |
183 | /* invoked for each run of the mainloop, just after the blocking call */ |
|
|
184 | /* revent EV_CHECK */ |
139 | struct ev_check |
185 | struct ev_check |
140 | { |
186 | { |
141 | EV_WATCHER (ev_check); |
187 | EV_WATCHER (ev_check); |
142 | }; |
188 | }; |
143 | |
189 | |
144 | #define EVMETHOD_NONE 0 |
190 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
|
|
191 | /* revent EV_CHILD */ |
|
|
192 | /* does not support priorities */ |
|
|
193 | struct ev_child |
|
|
194 | { |
|
|
195 | EV_WATCHER_LIST (ev_child); |
|
|
196 | |
|
|
197 | int pid; /* ro */ |
|
|
198 | int rpid; /* rw, holds the received pid */ |
|
|
199 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
|
|
200 | }; |
|
|
201 | |
|
|
202 | #define EVMETHOD_AUTO 0 /* consults environment */ |
145 | #define EVMETHOD_SELECT 1 |
203 | #define EVMETHOD_SELECT 1 |
146 | #define EVMETHOD_EPOLL 2 |
204 | #define EVMETHOD_POLL 2 |
|
|
205 | #define EVMETHOD_EPOLL 4 |
|
|
206 | #define EVMETHOD_KQUEUE 8 |
|
|
207 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
|
|
208 | #define EVMETHOD_PORT 32 /* NYI */ |
|
|
209 | #define EVMETHOD_WIN32 64 /* NYI */ |
|
|
210 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
|
|
211 | |
147 | #if EV_PROTOTYPES |
212 | #if EV_PROTOTYPES |
148 | extern int ev_method; |
213 | int ev_version_major (void); |
149 | int ev_init (int flags); /* returns ev_method */ |
214 | int ev_version_minor (void); |
150 | |
215 | |
151 | /* these three calls are suitable for plugging into pthread_atfork */ |
|
|
152 | void ev_prefork (void); |
|
|
153 | void ev_postfork_parent (void); |
|
|
154 | void ev_postfork_child (void); |
|
|
155 | |
|
|
156 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
|
|
157 | ev_tstamp ev_time (void); |
216 | ev_tstamp ev_time (void); |
|
|
217 | |
|
|
218 | # if EV_MULTIPLICITY |
|
|
219 | /* the default loop is the only one that handles signals and child watchers */ |
|
|
220 | /* you can call this as often as you like */ |
|
|
221 | struct ev_loop *ev_default_loop (int methods); /* returns default loop */ |
|
|
222 | |
|
|
223 | /* create and destroy alternative loops that don't handle signals */ |
|
|
224 | struct ev_loop *ev_loop_new (int methods); |
|
|
225 | void ev_loop_destroy (EV_P); |
|
|
226 | void ev_loop_fork (EV_P); |
|
|
227 | # else |
|
|
228 | int ev_default_loop (int methods); /* returns true when successful */ |
|
|
229 | # endif |
|
|
230 | |
|
|
231 | void ev_default_destroy (void); /* destroy the default loop */ |
|
|
232 | /* this needs to be called after fork, to duplicate the default loop */ |
|
|
233 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
|
|
234 | /* you can call it in either the parent or the child */ |
|
|
235 | /* you can actually call it at any time, anywhere :) */ |
|
|
236 | void ev_default_fork (void); |
|
|
237 | |
|
|
238 | int ev_method (EV_P); |
158 | #endif |
239 | #endif |
159 | |
240 | |
160 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
241 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
161 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
242 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
|
|
243 | #define EVUNLOOP_ONCE 1 /* unloop once */ |
|
|
244 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
|
|
245 | |
162 | #if EV_PROTOTYPES |
246 | #if EV_PROTOTYPES |
163 | void ev_loop (int flags); |
247 | void ev_loop (EV_P_ int flags); |
164 | extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
248 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
|
|
249 | |
|
|
250 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
|
|
251 | |
|
|
252 | /* |
|
|
253 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
|
|
254 | * keeps one reference. if you have a long-runing watcher you never unregister that |
|
|
255 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
|
|
256 | */ |
|
|
257 | void ev_ref (EV_P); |
|
|
258 | void ev_unref (EV_P); |
165 | |
259 | |
166 | /* convinience function, wait for a single event, without registering an event watcher */ |
260 | /* convinience function, wait for a single event, without registering an event watcher */ |
167 | /* if timeout is < 0, do wait indefinitely */ |
261 | /* if timeout is < 0, do wait indefinitely */ |
168 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
262 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
169 | #endif |
263 | #endif |
170 | |
264 | |
171 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
265 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
172 | /* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ |
266 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
173 | #define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) |
267 | #define ev_watcher_init(ev,cb_) do { \ |
|
|
268 | ((struct ev_watcher *)(ev))->active = \ |
|
|
269 | ((struct ev_watcher *)(ev))->pending = \ |
|
|
270 | ((struct ev_watcher *)(ev))->priority = 0; \ |
|
|
271 | ((struct ev_watcher *)(ev))->cb = (cb_); \ |
|
|
272 | } while (0) |
174 | |
273 | |
175 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
274 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
176 | #define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
275 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
177 | #define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
276 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
178 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
277 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
179 | #define evidle_set(ev) /* nop, yes, this is a serious in-joke */ |
278 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
180 | #define evprepare_set(ev) /* nop, yes, this is a serious in-joke */ |
279 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
181 | #define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ |
280 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
|
|
281 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
182 | |
282 | |
183 | #define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) |
283 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
184 | #define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) |
284 | #define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
185 | #define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) |
285 | #define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0) |
186 | #define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) |
286 | #define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
187 | #define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) |
287 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
188 | #define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) |
288 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
189 | #define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) |
289 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
|
|
290 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
190 | |
291 | |
|
|
292 | #define ev_is_pending(ev) (0 + ((struct ev_watcher *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
191 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
293 | #define ev_is_active(ev) (0 + ((struct ev_watcher *)(ev))->active) /* ro, true when the watcher has been started */ |
|
|
294 | |
|
|
295 | #define ev_priority(ev) ((struct ev_watcher *)(ev))->priority /* rw */ |
|
|
296 | #define ev_cb(ev) ((struct ev_watcher *)(ev))->cb /* rw */ |
|
|
297 | #define ev_set_priority(ev,pri) ev_priority (ev) = (pri) |
|
|
298 | #define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
192 | |
299 | |
193 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
300 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
194 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
301 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
195 | #if EV_PROTOTYPES |
302 | #if EV_PROTOTYPES |
196 | void evio_start (struct ev_io *w); |
303 | void ev_io_start (EV_P_ struct ev_io *w); |
197 | void evio_stop (struct ev_io *w); |
304 | void ev_io_stop (EV_P_ struct ev_io *w); |
198 | |
305 | |
199 | void evtimer_start (struct ev_timer *w); |
306 | void ev_timer_start (EV_P_ struct ev_timer *w); |
200 | void evtimer_stop (struct ev_timer *w); |
307 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
201 | void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
308 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
|
|
309 | void ev_timer_again (EV_P_ struct ev_timer *w); |
202 | |
310 | |
203 | void evperiodic_start (struct ev_periodic *w); |
311 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
204 | void evperiodic_stop (struct ev_periodic *w); |
312 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
205 | |
313 | |
206 | void evsignal_start (struct ev_signal *w); |
|
|
207 | void evsignal_stop (struct ev_signal *w); |
|
|
208 | |
|
|
209 | void evidle_start (struct ev_idle *w); |
314 | void ev_idle_start (EV_P_ struct ev_idle *w); |
210 | void evidle_stop (struct ev_idle *w); |
315 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
211 | |
316 | |
212 | void evprepare_start (struct ev_prepare *w); |
317 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
213 | void evprepare_stop (struct ev_prepare *w); |
318 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
214 | |
319 | |
215 | void evcheck_start (struct ev_check *w); |
320 | void ev_check_start (EV_P_ struct ev_check *w); |
216 | void evcheck_stop (struct ev_check *w); |
321 | void ev_check_stop (EV_P_ struct ev_check *w); |
217 | #endif |
|
|
218 | |
322 | |
219 | #endif |
323 | /* only supported in the default loop */ |
|
|
324 | void ev_signal_start (EV_P_ struct ev_signal *w); |
|
|
325 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
220 | |
326 | |
|
|
327 | /* only supported in the default loop */ |
|
|
328 | void ev_child_start (EV_P_ struct ev_child *w); |
|
|
329 | void ev_child_stop (EV_P_ struct ev_child *w); |
|
|
330 | #endif |
|
|
331 | |
|
|
332 | #ifdef __cplusplus |
|
|
333 | } |
|
|
334 | #endif |
|
|
335 | |
|
|
336 | #endif |
|
|
337 | |