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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 |
34 | |
46 | |
35 | /* eventmask, revents, events... */ |
47 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
48 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x00 |
49 | #define EV_NONE 0x00 |
38 | #define EV_READ 0x01 |
50 | #define EV_READ 0x01 |
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66 | |
78 | |
67 | /* shared by all watchers */ |
79 | /* shared by all watchers */ |
68 | #define EV_WATCHER(type) \ |
80 | #define EV_WATCHER(type) \ |
69 | int active; /* private */ \ |
81 | int active; /* private */ \ |
70 | int pending; /* private */ \ |
82 | int pending; /* private */ \ |
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83 | int priority; /* ro */ \ |
71 | EV_COMMON; /* rw */ \ |
84 | EV_COMMON; /* rw */ \ |
72 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
85 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
73 | |
86 | |
74 | #define EV_WATCHER_LIST(type) \ |
87 | #define EV_WATCHER_LIST(type) \ |
75 | EV_WATCHER (type); \ |
88 | EV_WATCHER (type); \ |
76 | struct type *next /* private */ |
89 | struct ev_watcher_list *next /* private */ |
77 | |
90 | |
78 | #define EV_WATCHER_TIME(type) \ |
91 | #define EV_WATCHER_TIME(type) \ |
79 | EV_WATCHER (type); \ |
92 | EV_WATCHER (type); \ |
80 | ev_tstamp at /* private */ |
93 | ev_tstamp at /* private */ |
81 | |
94 | |
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153 | EV_WATCHER (ev_check); |
166 | EV_WATCHER (ev_check); |
154 | }; |
167 | }; |
155 | |
168 | |
156 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
169 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
157 | /* revent EV_CHILD */ |
170 | /* revent EV_CHILD */ |
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171 | /* does not support priorities */ |
158 | struct ev_child |
172 | struct ev_child |
159 | { |
173 | { |
160 | EV_WATCHER_LIST (ev_child); |
174 | EV_WATCHER_LIST (ev_child); |
161 | |
175 | |
162 | int pid; /* ro */ |
176 | int pid; /* ro */ |
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177 | int rpid; /* rw, holds the received pid */ |
163 | int status; /* rw, holds the exit status, use the macros from sys/wait.h */ |
178 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
164 | }; |
179 | }; |
165 | |
180 | |
166 | #define EVMETHOD_NONE 0 |
181 | #define EVMETHOD_AUTO 0 /* consults environment */ |
167 | #define EVMETHOD_SELECT 1 |
182 | #define EVMETHOD_SELECT 1 |
168 | #define EVMETHOD_EPOLL 2 |
183 | #define EVMETHOD_POLL 2 |
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184 | #define EVMETHOD_EPOLL 4 |
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185 | #define EVMETHOD_KQUEUE 8 |
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186 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
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187 | #define EVMETHOD_PORT 32 /* NYI */ |
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188 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
169 | #if EV_PROTOTYPES |
189 | #if EV_PROTOTYPES |
170 | extern int ev_method; |
190 | extern int ev_method; |
171 | int ev_init (int flags); /* returns ev_method */ |
191 | int ev_init (int methods); /* returns ev_method */ |
172 | int ev_version_major (void); |
192 | int ev_version_major (void); |
173 | int ev_version_minor (void); |
193 | int ev_version_minor (void); |
174 | |
194 | |
175 | /* these three calls are suitable for plugging into pthread_atfork */ |
195 | /* these three calls are suitable for plugging into pthread_atfork */ |
176 | void ev_prefork (void); |
196 | void ev_fork_prepare (void); |
177 | void ev_postfork_parent (void); |
197 | void ev_fork_parent (void); |
178 | void ev_postfork_child (void); |
198 | void ev_fork_child (void); |
179 | |
199 | |
180 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
200 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
181 | ev_tstamp ev_time (void); |
201 | ev_tstamp ev_time (void); |
182 | #endif |
202 | #endif |
183 | |
203 | |
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192 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
212 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
193 | #endif |
213 | #endif |
194 | |
214 | |
195 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
215 | /* 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 */ |
216 | /* 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) |
217 | #define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0) |
198 | |
218 | |
199 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
219 | #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) |
220 | #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) |
221 | #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) |
222 | #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) |
232 | #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) |
233 | #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) |
234 | #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) |
235 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
216 | |
236 | |
217 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
237 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
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238 | #define ev_set_priority(ev,pri) (ev)->priority = pri |
218 | |
239 | |
219 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
240 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
220 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
241 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
221 | #if EV_PROTOTYPES |
242 | #if EV_PROTOTYPES |
222 | void ev_io_start (struct ev_io *w); |
243 | void ev_io_start (struct ev_io *w); |
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243 | |
264 | |
244 | void ev_child_start (struct ev_child *w); |
265 | void ev_child_start (struct ev_child *w); |
245 | void ev_child_stop (struct ev_child *w); |
266 | void ev_child_stop (struct ev_child *w); |
246 | #endif |
267 | #endif |
247 | |
268 | |
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269 | #ifdef __cplusplus |
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270 | } |
248 | #endif |
271 | #endif |
249 | |
272 | |
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273 | #endif |
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274 | |