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31 | #define EV_H |
31 | #define EV_H |
32 | |
32 | |
33 | typedef double ev_tstamp; |
33 | typedef double ev_tstamp; |
34 | |
34 | |
35 | /* eventmask, revents, events... */ |
35 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x00 |
37 | #define EV_NONE 0x00 |
38 | #define EV_READ 0x01 |
38 | #define EV_READ 0x01 |
39 | #define EV_WRITE 0x02 |
39 | #define EV_WRITE 0x02 |
40 | #define EV_REIFY 0x04 /* private */ |
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41 | #define EV_TIMEOUT 0x000100 |
40 | #define EV_TIMEOUT 0x000100 |
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41 | #define EV_PERIODIC 0x000200 |
42 | #define EV_SIGNAL 0x000200 |
42 | #define EV_SIGNAL 0x000400 |
43 | #define EV_IDLE 0x000400 |
43 | #define EV_IDLE 0x000800 |
44 | #define EV_CHECK 0x000800 |
44 | #define EV_CHECK 0x001000 |
45 | #define EV_PREPARE 0x001000 |
45 | #define EV_PREPARE 0x002000 |
46 | #define EV_CHILD 0x002000 |
46 | #define EV_CHILD 0x004000 |
47 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
47 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
48 | |
48 | |
49 | /* can be used to add custom fields to all watchers */ |
49 | /* can be used to add custom fields to all watchers */ |
50 | #ifndef EV_COMMON |
50 | #ifndef EV_COMMON |
51 | # define EV_COMMON void *data |
51 | # define EV_COMMON void *data |
52 | #endif |
52 | #endif |
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93 | struct ev_watcher_time { |
93 | struct ev_watcher_time { |
94 | EV_WATCHER_TIME (ev_watcher_time); |
94 | EV_WATCHER_TIME (ev_watcher_time); |
95 | }; |
95 | }; |
96 | |
96 | |
97 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
97 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
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98 | /* revent EV_TIMEOUT */ |
98 | struct ev_timer |
99 | struct ev_timer |
99 | { |
100 | { |
100 | EV_WATCHER_TIME (ev_timer); |
101 | EV_WATCHER_TIME (ev_timer); |
101 | |
102 | |
102 | ev_tstamp repeat; /* rw */ |
103 | ev_tstamp repeat; /* rw */ |
103 | }; |
104 | }; |
104 | |
105 | |
105 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
106 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
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107 | /* revent EV_PERIODIC */ |
106 | struct ev_periodic |
108 | struct ev_periodic |
107 | { |
109 | { |
108 | EV_WATCHER_TIME (ev_periodic); |
110 | EV_WATCHER_TIME (ev_periodic); |
109 | |
111 | |
110 | ev_tstamp interval; /* rw */ |
112 | ev_tstamp interval; /* rw */ |
111 | }; |
113 | }; |
112 | |
114 | |
113 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
115 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
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116 | /* revent EV_READ, EV_WRITE */ |
114 | struct ev_io |
117 | struct ev_io |
115 | { |
118 | { |
116 | EV_WATCHER_LIST (ev_io); |
119 | EV_WATCHER_LIST (ev_io); |
117 | |
120 | |
118 | int fd; /* ro */ |
121 | int fd; /* ro */ |
119 | int events; /* ro */ |
122 | int events; /* ro */ |
120 | }; |
123 | }; |
121 | |
124 | |
122 | /* invoked when the given signal has been received */ |
125 | /* invoked when the given signal has been received */ |
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126 | /* revent EV_SIGNAL */ |
123 | struct ev_signal |
127 | struct ev_signal |
124 | { |
128 | { |
125 | EV_WATCHER_LIST (ev_signal); |
129 | EV_WATCHER_LIST (ev_signal); |
126 | |
130 | |
127 | int signum; /* ro */ |
131 | int signum; /* ro */ |
128 | }; |
132 | }; |
129 | |
133 | |
130 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
134 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
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135 | /* revent EV_IDLE */ |
131 | struct ev_idle |
136 | struct ev_idle |
132 | { |
137 | { |
133 | EV_WATCHER (ev_idle); |
138 | EV_WATCHER (ev_idle); |
134 | }; |
139 | }; |
135 | |
140 | |
136 | /* invoked for each run of the mainloop, just before the blocking call */ |
141 | /* invoked for each run of the mainloop, just before the blocking call */ |
137 | /* you can still change events in any way you like */ |
142 | /* you can still change events in any way you like */ |
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143 | /* revent EV_PREPARE */ |
138 | struct ev_prepare |
144 | struct ev_prepare |
139 | { |
145 | { |
140 | EV_WATCHER (ev_prepare); |
146 | EV_WATCHER (ev_prepare); |
141 | }; |
147 | }; |
142 | |
148 | |
143 | /* invoked for each run of the mainloop, just after the blocking call */ |
149 | /* invoked for each run of the mainloop, just after the blocking call */ |
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150 | /* revent EV_CHECK */ |
144 | struct ev_check |
151 | struct ev_check |
145 | { |
152 | { |
146 | EV_WATCHER (ev_check); |
153 | EV_WATCHER (ev_check); |
147 | }; |
154 | }; |
148 | |
155 | |
149 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
156 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
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157 | /* revent EV_CHILD */ |
150 | struct ev_child |
158 | struct ev_child |
151 | { |
159 | { |
152 | EV_WATCHER_LIST (ev_child); |
160 | EV_WATCHER_LIST (ev_child); |
153 | |
161 | |
154 | int pid; /* ro */ |
162 | int pid; /* ro */ |
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163 | int ev_init (int flags); /* returns ev_method */ |
171 | int ev_init (int flags); /* returns ev_method */ |
164 | int ev_version_major (void); |
172 | int ev_version_major (void); |
165 | int ev_version_minor (void); |
173 | int ev_version_minor (void); |
166 | |
174 | |
167 | /* these three calls are suitable for plugging into pthread_atfork */ |
175 | /* these three calls are suitable for plugging into pthread_atfork */ |
168 | void ev_prefork (void); |
176 | void ev_fork_prepare (void); |
169 | void ev_postfork_parent (void); |
177 | void ev_fork_parent (void); |
170 | void ev_postfork_child (void); |
178 | void ev_fork_child (void); |
171 | |
179 | |
172 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
180 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
173 | ev_tstamp ev_time (void); |
181 | ev_tstamp ev_time (void); |
174 | #endif |
182 | #endif |
175 | |
183 | |
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183 | /* if timeout is < 0, do wait indefinitely */ |
191 | /* if timeout is < 0, do wait indefinitely */ |
184 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
192 | void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
185 | #endif |
193 | #endif |
186 | |
194 | |
187 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
195 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
188 | /* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ |
196 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
189 | #define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) |
197 | #define ev_watcher_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) |
190 | |
198 | |
191 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
199 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
192 | #define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
200 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
193 | #define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
201 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
194 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
202 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
195 | #define evidle_set(ev) /* nop, yes, this is a serious in-joke */ |
203 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
196 | #define evprepare_set(ev) /* nop, yes, this is a serious in-joke */ |
204 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
197 | #define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ |
205 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
198 | #define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
206 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
199 | |
207 | |
200 | #define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) |
208 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
201 | #define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) |
209 | #define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
202 | #define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) |
210 | #define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0) |
203 | #define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) |
211 | #define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
204 | #define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) |
212 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
205 | #define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) |
213 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
206 | #define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) |
214 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
207 | #define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0) |
215 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
208 | |
216 | |
209 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
217 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
210 | |
218 | |
211 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
219 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
212 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
220 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
213 | #if EV_PROTOTYPES |
221 | #if EV_PROTOTYPES |
214 | void evio_start (struct ev_io *w); |
222 | void ev_io_start (struct ev_io *w); |
215 | void evio_stop (struct ev_io *w); |
223 | void ev_io_stop (struct ev_io *w); |
216 | |
224 | |
217 | void evtimer_start (struct ev_timer *w); |
225 | void ev_timer_start (struct ev_timer *w); |
218 | void evtimer_stop (struct ev_timer *w); |
226 | void ev_timer_stop (struct ev_timer *w); |
219 | void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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 */ |
220 | |
228 | |
221 | void evperiodic_start (struct ev_periodic *w); |
229 | void ev_periodic_start (struct ev_periodic *w); |
222 | void evperiodic_stop (struct ev_periodic *w); |
230 | void ev_periodic_stop (struct ev_periodic *w); |
223 | |
231 | |
224 | void evsignal_start (struct ev_signal *w); |
232 | void ev_signal_start (struct ev_signal *w); |
225 | void evsignal_stop (struct ev_signal *w); |
233 | void ev_signal_stop (struct ev_signal *w); |
226 | |
234 | |
227 | void evidle_start (struct ev_idle *w); |
235 | void ev_idle_start (struct ev_idle *w); |
228 | void evidle_stop (struct ev_idle *w); |
236 | void ev_idle_stop (struct ev_idle *w); |
229 | |
237 | |
230 | void evprepare_start (struct ev_prepare *w); |
238 | void ev_prepare_start (struct ev_prepare *w); |
231 | void evprepare_stop (struct ev_prepare *w); |
239 | void ev_prepare_stop (struct ev_prepare *w); |
232 | |
240 | |
233 | void evcheck_start (struct ev_check *w); |
241 | void ev_check_start (struct ev_check *w); |
234 | void evcheck_stop (struct ev_check *w); |
242 | void ev_check_stop (struct ev_check *w); |
235 | |
243 | |
236 | void evchild_start (struct ev_child *w); |
244 | void ev_child_start (struct ev_child *w); |
237 | void evchild_stop (struct ev_child *w); |
245 | void ev_child_stop (struct ev_child *w); |
238 | #endif |
246 | #endif |
239 | |
247 | |
240 | #endif |
248 | #endif |
241 | |
249 | |