… | |
… | |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | |
29 | |
30 | #ifndef EV_H |
30 | #ifndef EV_H__ |
31 | #define EV_H |
31 | #define EV_H__ |
|
|
32 | |
|
|
33 | #ifdef __cplusplus |
|
|
34 | extern "C" { |
|
|
35 | #endif |
32 | |
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 | #ifndef EV_PERIODIC_ENABLE |
|
|
52 | # define EV_PERIODIC_ENABLE 1 |
|
|
53 | #endif |
|
|
54 | |
|
|
55 | #ifndef EV_STAT_ENABLE |
|
|
56 | # define EV_STAT_ENABLE 1 |
|
|
57 | #endif |
|
|
58 | |
|
|
59 | #ifndef EV_IDLE_ENABLE |
|
|
60 | # define EV_IDLE_ENABLE 1 |
|
|
61 | #endif |
|
|
62 | |
|
|
63 | #ifndef EV_FORK_ENABLE |
|
|
64 | # define EV_FORK_ENABLE 1 |
|
|
65 | #endif |
|
|
66 | |
|
|
67 | #ifndef EV_EMBED_ENABLE |
|
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68 | # define EV_EMBED_ENABLE 1 |
|
|
69 | #endif |
|
|
70 | |
|
|
71 | /*****************************************************************************/ |
|
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72 | |
|
|
73 | #if EV_STAT_ENABLE |
|
|
74 | # include <sys/stat.h> |
|
|
75 | #endif |
|
|
76 | |
|
|
77 | /* support multiple event loops? */ |
|
|
78 | #if EV_MULTIPLICITY |
|
|
79 | struct ev_loop; |
|
|
80 | # define EV_P struct ev_loop *loop |
|
|
81 | # define EV_P_ EV_P, |
|
|
82 | # define EV_A loop |
|
|
83 | # define EV_A_ EV_A, |
|
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84 | # define EV_DEFAULT ev_default_loop (0) |
|
|
85 | # define EV_DEFAULT_ EV_DEFAULT, |
|
|
86 | #else |
|
|
87 | # define EV_P void |
|
|
88 | # define EV_P_ |
|
|
89 | # define EV_A |
|
|
90 | # define EV_A_ |
|
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91 | # define EV_DEFAULT |
|
|
92 | # define EV_DEFAULT_ |
|
|
93 | |
|
|
94 | # undef EV_EMBED_ENABLE |
|
|
95 | #endif |
|
|
96 | |
35 | /* eventmask, revents, events... */ |
97 | /* eventmask, revents, events... */ |
36 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
98 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
37 | #define EV_NONE 0x00 |
99 | #define EV_NONE 0x00L /* no events */ |
38 | #define EV_READ 0x01 |
100 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
39 | #define EV_WRITE 0x02 |
101 | #define EV_WRITE 0x02L /* ev_io detected write will not block */ |
40 | #define EV_REIFY 0x04 /* private */ |
102 | #define EV_TIMEOUT 0x00000100L /* timer timed out */ |
41 | #define EV_TIMEOUT 0x000100 |
103 | #define EV_PERIODIC 0x00000200L /* periodic timer timed out */ |
42 | #define EV_SIGNAL 0x000200 |
104 | #define EV_SIGNAL 0x00000400L /* signal was received */ |
43 | #define EV_IDLE 0x000400 |
105 | #define EV_CHILD 0x00000800L /* child/pid had status change */ |
44 | #define EV_CHECK 0x000800 |
106 | #define EV_STAT 0x00001000L /* stat data changed */ |
45 | #define EV_PREPARE 0x001000 |
107 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
46 | #define EV_CHILD 0x002000 |
108 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
|
|
109 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
|
|
110 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
|
|
111 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
47 | #define EV_ERROR 0x800000 /* sent when an error occurs */ |
112 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
48 | |
113 | |
49 | /* can be used to add custom fields to all watchers */ |
114 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
50 | #ifndef EV_COMMON |
115 | #ifndef EV_COMMON |
51 | # define EV_COMMON void *data |
116 | # define EV_COMMON void *data; |
52 | #endif |
117 | #endif |
53 | #ifndef EV_PROTOTYPES |
118 | #ifndef EV_PROTOTYPES |
54 | # define EV_PROTOTYPES 1 |
119 | # define EV_PROTOTYPES 1 |
55 | #endif |
120 | #endif |
56 | |
121 | |
57 | #define EV_VERSION_MAJOR 1 |
122 | #define EV_VERSION_MAJOR 1 |
58 | #define EV_VERSION_MINOR 1 |
123 | #define EV_VERSION_MINOR 1 |
|
|
124 | |
|
|
125 | #ifndef EV_CB_DECLARE |
|
|
126 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
|
|
127 | #endif |
|
|
128 | #ifndef EV_CB_INVOKE |
|
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129 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
|
|
130 | #endif |
59 | |
131 | |
60 | /* |
132 | /* |
61 | * struct member types: |
133 | * struct member types: |
62 | * private: you can look at them, but not change them, and they might not mean anything to you. |
134 | * private: you can look at them, but not change them, and they might not mean anything to you. |
63 | * ro: can be read anytime, but only changed when the watcher isn't active |
135 | * ro: can be read anytime, but only changed when the watcher isn't active |
… | |
… | |
66 | |
138 | |
67 | /* shared by all watchers */ |
139 | /* shared by all watchers */ |
68 | #define EV_WATCHER(type) \ |
140 | #define EV_WATCHER(type) \ |
69 | int active; /* private */ \ |
141 | int active; /* private */ \ |
70 | int pending; /* private */ \ |
142 | int pending; /* private */ \ |
|
|
143 | int priority; /* private */ \ |
71 | EV_COMMON; /* rw */ \ |
144 | EV_COMMON /* rw */ \ |
72 | void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
145 | EV_CB_DECLARE (type) /* private */ |
73 | |
146 | |
74 | #define EV_WATCHER_LIST(type) \ |
147 | #define EV_WATCHER_LIST(type) \ |
75 | EV_WATCHER (type); \ |
148 | EV_WATCHER (type) \ |
76 | struct type *next /* private */ |
149 | struct ev_watcher_list *next; /* private */ |
77 | |
150 | |
78 | #define EV_WATCHER_TIME(type) \ |
151 | #define EV_WATCHER_TIME(type) \ |
79 | EV_WATCHER (type); \ |
152 | EV_WATCHER (type) \ |
80 | ev_tstamp at /* private */ |
153 | ev_tstamp at; /* private */ |
81 | |
154 | |
82 | /* base class, nothing to see here unless you subclass */ |
155 | /* base class, nothing to see here unless you subclass */ |
83 | struct ev_watcher { |
156 | typedef struct ev_watcher |
|
|
157 | { |
84 | EV_WATCHER (ev_watcher); |
158 | EV_WATCHER (ev_watcher) |
85 | }; |
159 | } ev_watcher; |
86 | |
160 | |
87 | /* base class, nothing to see here unless you subclass */ |
161 | /* base class, nothing to see here unless you subclass */ |
88 | struct ev_watcher_list { |
162 | typedef struct ev_watcher_list |
|
|
163 | { |
89 | EV_WATCHER_LIST (ev_watcher_list); |
164 | EV_WATCHER_LIST (ev_watcher_list) |
90 | }; |
165 | } ev_watcher_list; |
91 | |
166 | |
92 | /* base class, nothing to see here unless you subclass */ |
167 | /* base class, nothing to see here unless you subclass */ |
93 | struct ev_watcher_time { |
168 | typedef struct ev_watcher_time |
|
|
169 | { |
94 | EV_WATCHER_TIME (ev_watcher_time); |
170 | EV_WATCHER_TIME (ev_watcher_time) |
95 | }; |
171 | } ev_watcher_time; |
96 | |
|
|
97 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
|
|
98 | struct ev_timer |
|
|
99 | { |
|
|
100 | EV_WATCHER_TIME (ev_timer); |
|
|
101 | |
|
|
102 | ev_tstamp repeat; /* rw */ |
|
|
103 | }; |
|
|
104 | |
|
|
105 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
|
|
106 | struct ev_periodic |
|
|
107 | { |
|
|
108 | EV_WATCHER_TIME (ev_periodic); |
|
|
109 | |
|
|
110 | ev_tstamp interval; /* rw */ |
|
|
111 | }; |
|
|
112 | |
172 | |
113 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
173 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
|
|
174 | /* revent EV_READ, EV_WRITE */ |
114 | struct ev_io |
175 | typedef struct ev_io |
115 | { |
176 | { |
116 | EV_WATCHER_LIST (ev_io); |
177 | EV_WATCHER_LIST (ev_io) |
117 | |
178 | |
118 | int fd; /* ro */ |
179 | int fd; /* ro */ |
119 | int events; /* ro */ |
180 | int events; /* ro */ |
120 | }; |
181 | } ev_io; |
|
|
182 | |
|
|
183 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
|
|
184 | /* revent EV_TIMEOUT */ |
|
|
185 | typedef struct ev_timer |
|
|
186 | { |
|
|
187 | EV_WATCHER_TIME (ev_timer) |
|
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188 | |
|
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189 | ev_tstamp repeat; /* rw */ |
|
|
190 | } ev_timer; |
|
|
191 | |
|
|
192 | /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ |
|
|
193 | /* revent EV_PERIODIC */ |
|
|
194 | typedef struct ev_periodic |
|
|
195 | { |
|
|
196 | EV_WATCHER_TIME (ev_periodic) |
|
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197 | |
|
|
198 | ev_tstamp offset; /* rw */ |
|
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199 | ev_tstamp interval; /* rw */ |
|
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200 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
|
|
201 | } ev_periodic; |
121 | |
202 | |
122 | /* invoked when the given signal has been received */ |
203 | /* invoked when the given signal has been received */ |
|
|
204 | /* revent EV_SIGNAL */ |
123 | struct ev_signal |
205 | typedef struct ev_signal |
124 | { |
206 | { |
125 | EV_WATCHER_LIST (ev_signal); |
207 | EV_WATCHER_LIST (ev_signal) |
126 | |
208 | |
127 | int signum; /* ro */ |
209 | int signum; /* ro */ |
128 | }; |
210 | } ev_signal; |
129 | |
211 | |
|
|
212 | /* invoked when sigchld is received and waitpid indicates the given pid */ |
|
|
213 | /* revent EV_CHILD */ |
|
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214 | /* does not support priorities */ |
|
|
215 | typedef struct ev_child |
|
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216 | { |
|
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217 | EV_WATCHER_LIST (ev_child) |
|
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218 | |
|
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219 | int pid; /* ro */ |
|
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220 | int rpid; /* rw, holds the received pid */ |
|
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221 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
|
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222 | } ev_child; |
|
|
223 | |
|
|
224 | #if EV_STAT_ENABLE |
|
|
225 | /* st_nlink = 0 means missing file or other error */ |
|
|
226 | # ifdef _WIN32 |
|
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227 | typedef struct _stati64 ev_statdata; |
|
|
228 | # else |
|
|
229 | typedef struct stat ev_statdata; |
|
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230 | # endif |
|
|
231 | |
|
|
232 | /* invoked each time the stat data changes for a given path */ |
|
|
233 | /* revent EV_STAT */ |
|
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234 | typedef struct ev_stat |
|
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235 | { |
|
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236 | EV_WATCHER_LIST (ev_stat) |
|
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237 | |
|
|
238 | ev_timer timer; /* private */ |
|
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239 | ev_tstamp interval; /* ro */ |
|
|
240 | const char *path; /* ro */ |
|
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241 | ev_statdata prev; /* ro */ |
|
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242 | ev_statdata attr; /* ro */ |
|
|
243 | |
|
|
244 | int wd; /* wd for inotify, fd for kqueue */ |
|
|
245 | } ev_stat; |
|
|
246 | #endif |
|
|
247 | |
|
|
248 | #if EV_IDLE_ENABLE |
130 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
249 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
|
|
250 | /* revent EV_IDLE */ |
131 | struct ev_idle |
251 | typedef struct ev_idle |
132 | { |
252 | { |
133 | EV_WATCHER (ev_idle); |
253 | EV_WATCHER (ev_idle) |
134 | }; |
254 | } ev_idle; |
|
|
255 | #endif |
135 | |
256 | |
136 | /* invoked for each run of the mainloop, just before the blocking call */ |
257 | /* invoked for each run of the mainloop, just before the blocking call */ |
137 | /* you can still change events in any way you like */ |
258 | /* you can still change events in any way you like */ |
|
|
259 | /* revent EV_PREPARE */ |
138 | struct ev_prepare |
260 | typedef struct ev_prepare |
139 | { |
261 | { |
140 | EV_WATCHER (ev_prepare); |
262 | EV_WATCHER (ev_prepare) |
|
|
263 | } ev_prepare; |
|
|
264 | |
|
|
265 | /* invoked for each run of the mainloop, just after the blocking call */ |
|
|
266 | /* revent EV_CHECK */ |
|
|
267 | typedef struct ev_check |
|
|
268 | { |
|
|
269 | EV_WATCHER (ev_check) |
|
|
270 | } ev_check; |
|
|
271 | |
|
|
272 | #if EV_FORK_ENABLE |
|
|
273 | /* the callback gets invoked before check in the child process when a fork was detected */ |
|
|
274 | typedef struct ev_fork |
|
|
275 | { |
|
|
276 | EV_WATCHER (ev_fork) |
|
|
277 | } ev_fork; |
|
|
278 | #endif |
|
|
279 | |
|
|
280 | #if EV_EMBED_ENABLE |
|
|
281 | /* used to embed an event loop inside another */ |
|
|
282 | /* the callback gets invoked when the event loop has handled events, and can be 0 */ |
|
|
283 | typedef struct ev_embed |
|
|
284 | { |
|
|
285 | EV_WATCHER (ev_embed) |
|
|
286 | |
|
|
287 | ev_io io; /* private */ |
|
|
288 | struct ev_loop *loop; /* ro */ |
|
|
289 | } ev_embed; |
|
|
290 | #endif |
|
|
291 | |
|
|
292 | /* the presence of this union forces similar struct layout */ |
|
|
293 | union ev_any_watcher |
|
|
294 | { |
|
|
295 | struct ev_watcher w; |
|
|
296 | struct ev_watcher_list wl; |
|
|
297 | |
|
|
298 | struct ev_io io; |
|
|
299 | struct ev_timer timer; |
|
|
300 | struct ev_periodic periodic; |
|
|
301 | struct ev_signal signal; |
|
|
302 | struct ev_child child; |
|
|
303 | #if EV_STAT_ENABLE |
|
|
304 | struct ev_stat stat; |
|
|
305 | #endif |
|
|
306 | #if EV_IDLE_ENABLE |
|
|
307 | struct ev_idle idle; |
|
|
308 | #endif |
|
|
309 | struct ev_prepare prepare; |
|
|
310 | struct ev_check check; |
|
|
311 | #if EV_FORK_ENABLE |
|
|
312 | struct ev_fork fork; |
|
|
313 | #endif |
|
|
314 | #if EV_EMBED_ENABLE |
|
|
315 | struct ev_embed embed; |
|
|
316 | #endif |
141 | }; |
317 | }; |
142 | |
318 | |
143 | /* invoked for each run of the mainloop, just after the blocking call */ |
319 | /* bits for ev_default_loop and ev_loop_new */ |
144 | struct ev_check |
320 | /* the default */ |
145 | { |
321 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
146 | EV_WATCHER (ev_check); |
322 | /* flag bits */ |
147 | }; |
323 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
|
|
324 | #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ |
|
|
325 | /* method bits to be ored together */ |
|
|
326 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
|
|
327 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
|
|
328 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
|
|
329 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
|
|
330 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
|
|
331 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
148 | |
332 | |
149 | /* invoked when sigchld is received and waitpid indicates the givne pid */ |
|
|
150 | struct ev_child |
|
|
151 | { |
|
|
152 | EV_WATCHER_LIST (ev_child); |
|
|
153 | |
|
|
154 | int pid; /* ro */ |
|
|
155 | int status; /* rw, holds the exit status, use the macros from sys/wait.h */ |
|
|
156 | }; |
|
|
157 | |
|
|
158 | #define EVMETHOD_NONE 0 |
|
|
159 | #define EVMETHOD_SELECT 1 |
|
|
160 | #define EVMETHOD_EPOLL 2 |
|
|
161 | #if EV_PROTOTYPES |
333 | #if EV_PROTOTYPES |
162 | extern int ev_method; |
|
|
163 | int ev_init (int flags); /* returns ev_method */ |
|
|
164 | int ev_version_major (void); |
334 | int ev_version_major (void); |
165 | int ev_version_minor (void); |
335 | int ev_version_minor (void); |
166 | |
336 | |
167 | /* these three calls are suitable for plugging into pthread_atfork */ |
337 | unsigned int ev_supported_backends (void); |
168 | void ev_prefork (void); |
338 | unsigned int ev_recommended_backends (void); |
169 | void ev_postfork_parent (void); |
339 | unsigned int ev_embeddable_backends (void); |
170 | void ev_postfork_child (void); |
|
|
171 | |
340 | |
172 | extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ |
|
|
173 | ev_tstamp ev_time (void); |
341 | ev_tstamp ev_time (void); |
|
|
342 | |
|
|
343 | /* Sets the allocation function to use, works like realloc. |
|
|
344 | * It is used to allocate and free memory. |
|
|
345 | * If it returns zero when memory needs to be allocated, the library might abort |
|
|
346 | * or take some potentially destructive action. |
|
|
347 | * The default is your system realloc function. |
|
|
348 | */ |
|
|
349 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
|
|
350 | |
|
|
351 | /* set the callback function to call on a |
|
|
352 | * retryable syscall error |
|
|
353 | * (such as failed select, poll, epoll_wait) |
|
|
354 | */ |
|
|
355 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
|
|
356 | |
|
|
357 | # if EV_MULTIPLICITY |
|
|
358 | /* the default loop is the only one that handles signals and child watchers */ |
|
|
359 | /* you can call this as often as you like */ |
|
|
360 | static struct ev_loop * |
|
|
361 | ev_default_loop (unsigned int flags) |
|
|
362 | { |
|
|
363 | extern struct ev_loop *ev_default_loop_ptr; |
|
|
364 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
|
|
365 | |
|
|
366 | if (!ev_default_loop_ptr) |
|
|
367 | ev_default_loop_init (flags); |
|
|
368 | |
|
|
369 | return ev_default_loop_ptr; |
|
|
370 | } |
|
|
371 | |
|
|
372 | /* create and destroy alternative loops that don't handle signals */ |
|
|
373 | struct ev_loop *ev_loop_new (unsigned int flags); |
|
|
374 | void ev_loop_destroy (EV_P); |
|
|
375 | void ev_loop_fork (EV_P); |
|
|
376 | |
|
|
377 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
|
|
378 | |
|
|
379 | # else |
|
|
380 | |
|
|
381 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
|
|
382 | |
|
|
383 | static ev_tstamp |
|
|
384 | ev_now (void) |
|
|
385 | { |
|
|
386 | extern ev_tstamp ev_rt_now; |
|
|
387 | |
|
|
388 | return ev_rt_now; |
|
|
389 | } |
|
|
390 | # endif |
|
|
391 | |
|
|
392 | void ev_default_destroy (void); /* destroy the default loop */ |
|
|
393 | /* this needs to be called after fork, to duplicate the default loop */ |
|
|
394 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
|
|
395 | /* you can call it in either the parent or the child */ |
|
|
396 | /* you can actually call it at any time, anywhere :) */ |
|
|
397 | void ev_default_fork (void); |
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398 | |
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399 | unsigned int ev_backend (EV_P); |
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400 | unsigned int ev_loop_count (EV_P); |
174 | #endif |
401 | #endif |
175 | |
402 | |
176 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
403 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
177 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
404 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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405 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
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406 | #define EVUNLOOP_ONE 1 /* unloop once */ |
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407 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
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408 | |
178 | #if EV_PROTOTYPES |
409 | #if EV_PROTOTYPES |
179 | void ev_loop (int flags); |
410 | void ev_loop (EV_P_ int flags); |
180 | extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
411 | 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 */ |
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412 | |
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413 | /* |
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414 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
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415 | * keeps one reference. if you have a long-runing watcher you never unregister that |
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416 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
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417 | */ |
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418 | void ev_ref (EV_P); |
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419 | void ev_unref (EV_P); |
181 | |
420 | |
182 | /* convinience function, wait for a single event, without registering an event watcher */ |
421 | /* convinience function, wait for a single event, without registering an event watcher */ |
183 | /* if timeout is < 0, do wait indefinitely */ |
422 | /* 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); |
423 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
185 | #endif |
424 | #endif |
186 | |
425 | |
187 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
426 | /* 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 */ |
427 | /* either use ev_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) |
428 | #define ev_init(ev,cb_) do { \ |
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429 | ((ev_watcher *)(void *)(ev))->active = \ |
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430 | ((ev_watcher *)(void *)(ev))->pending = \ |
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431 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
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432 | ev_set_cb ((ev), cb_); \ |
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433 | } while (0) |
190 | |
434 | |
191 | #define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
435 | #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) |
436 | #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) |
437 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
194 | #define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
438 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
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439 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
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440 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
195 | #define evidle_set(ev) /* nop, yes, this is a serious in-joke */ |
441 | #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 */ |
442 | #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 */ |
443 | #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) |
444 | #define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0) |
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445 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
199 | |
446 | |
200 | #define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) |
447 | #define ev_io_init(ev,cb,fd,events) do { ev_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) |
448 | #define ev_timer_init(ev,cb,after,repeat) do { ev_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) |
449 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
203 | #define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) |
450 | #define ev_signal_init(ev,cb,signum) do { ev_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) |
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205 | #define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) |
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206 | #define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) |
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207 | #define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0) |
451 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
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452 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_path_set ((ev),(path),(interval)); } while (0) |
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453 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
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454 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
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455 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
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456 | #define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0) |
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457 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
208 | |
458 | |
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459 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
209 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
460 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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461 | |
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462 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
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463 | #define ev_cb(ev) (ev)->cb /* rw */ |
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464 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
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465 | |
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466 | #ifndef ev_set_cb |
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467 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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468 | #endif |
210 | |
469 | |
211 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
470 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
212 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
471 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
213 | #if EV_PROTOTYPES |
472 | #if EV_PROTOTYPES |
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473 | |
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474 | /* feeds an event into a watcher as if the event actually occured */ |
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475 | /* accepts any ev_watcher type */ |
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476 | void ev_feed_event (EV_P_ void *w, int revents); |
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477 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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478 | void ev_feed_signal_event (EV_P_ int signum); |
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479 | void ev_invoke (EV_P_ void *w, int revents); |
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480 | int ev_clear_pending (EV_P_ void *w); |
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481 | |
214 | void evio_start (struct ev_io *w); |
482 | void ev_io_start (EV_P_ ev_io *w); |
215 | void evio_stop (struct ev_io *w); |
483 | void ev_io_stop (EV_P_ ev_io *w); |
216 | |
484 | |
217 | void evtimer_start (struct ev_timer *w); |
485 | void ev_timer_start (EV_P_ ev_timer *w); |
218 | void evtimer_stop (struct ev_timer *w); |
486 | void ev_timer_stop (EV_P_ 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 */ |
487 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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488 | void ev_timer_again (EV_P_ ev_timer *w); |
220 | |
489 | |
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490 | #if EV_PERIODIC_ENABLE |
221 | void evperiodic_start (struct ev_periodic *w); |
491 | void ev_periodic_start (EV_P_ ev_periodic *w); |
222 | void evperiodic_stop (struct ev_periodic *w); |
492 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
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493 | void ev_periodic_again (EV_P_ ev_periodic *w); |
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494 | #endif |
223 | |
495 | |
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496 | /* only supported in the default loop */ |
224 | void evsignal_start (struct ev_signal *w); |
497 | void ev_signal_start (EV_P_ ev_signal *w); |
225 | void evsignal_stop (struct ev_signal *w); |
498 | void ev_signal_stop (EV_P_ ev_signal *w); |
226 | |
499 | |
227 | void evidle_start (struct ev_idle *w); |
500 | /* only supported in the default loop */ |
228 | void evidle_stop (struct ev_idle *w); |
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229 | |
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230 | void evprepare_start (struct ev_prepare *w); |
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231 | void evprepare_stop (struct ev_prepare *w); |
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232 | |
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233 | void evcheck_start (struct ev_check *w); |
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234 | void evcheck_stop (struct ev_check *w); |
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235 | |
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236 | void evchild_start (struct ev_child *w); |
501 | void ev_child_start (EV_P_ ev_child *w); |
237 | void evchild_stop (struct ev_child *w); |
502 | void ev_child_stop (EV_P_ ev_child *w); |
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503 | |
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504 | # if EV_STAT_ENABLE |
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505 | void ev_stat_start (EV_P_ ev_stat *w); |
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506 | void ev_stat_stop (EV_P_ ev_stat *w); |
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507 | void ev_stat_stat (EV_P_ ev_stat *w); |
238 | #endif |
508 | # endif |
239 | |
509 | |
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510 | # if EV_IDLE_ENABLE |
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511 | void ev_idle_start (EV_P_ ev_idle *w); |
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512 | void ev_idle_stop (EV_P_ ev_idle *w); |
240 | #endif |
513 | # endif |
241 | |
514 | |
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515 | void ev_prepare_start (EV_P_ ev_prepare *w); |
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516 | void ev_prepare_stop (EV_P_ ev_prepare *w); |
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517 | |
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518 | void ev_check_start (EV_P_ ev_check *w); |
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519 | void ev_check_stop (EV_P_ ev_check *w); |
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520 | |
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521 | # if EV_FORK_ENABLE |
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522 | void ev_fork_start (EV_P_ ev_fork *w); |
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523 | void ev_fork_stop (EV_P_ ev_fork *w); |
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524 | # endif |
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525 | |
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526 | # if EV_EMBED_ENABLE |
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527 | /* only supported when loop to be embedded is in fact embeddable */ |
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528 | void ev_embed_start (EV_P_ ev_embed *w); |
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529 | void ev_embed_stop (EV_P_ ev_embed *w); |
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530 | void ev_embed_sweep (EV_P_ ev_embed *w); |
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531 | # endif |
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532 | |
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533 | #endif |
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534 | |
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535 | #ifdef __cplusplus |
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536 | } |
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537 | #endif |
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538 | |
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539 | #endif |
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540 | |