1 | /* |
1 | /* |
2 | * libev native API header |
2 | * libev native API header |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
40 | #ifndef EV_H__ |
40 | #ifndef EV_H_ |
41 | #define EV_H__ |
41 | #define EV_H_ |
42 | |
42 | |
43 | #ifdef __cplusplus |
43 | #ifdef __cplusplus |
44 | extern "C" { |
44 | extern "C" { |
45 | #endif |
45 | #endif |
46 | |
46 | |
… | |
… | |
72 | |
72 | |
73 | #ifndef EV_FORK_ENABLE |
73 | #ifndef EV_FORK_ENABLE |
74 | # define EV_FORK_ENABLE 1 |
74 | # define EV_FORK_ENABLE 1 |
75 | #endif |
75 | #endif |
76 | |
76 | |
|
|
77 | #ifndef EV_SIGNAL_ENABLE |
|
|
78 | # define EV_SIGNAL_ENABLE 1 |
|
|
79 | #endif |
|
|
80 | |
|
|
81 | #ifndef EV_CHILD_ENABLE |
|
|
82 | # ifdef _WIN32 |
|
|
83 | # define EV_CHILD_ENABLE 0 |
|
|
84 | # else |
|
|
85 | # define EV_CHILD_ENABLE 1 |
|
|
86 | #endif |
|
|
87 | #endif |
|
|
88 | |
|
|
89 | #ifndef EV_ASYNC_ENABLE |
|
|
90 | # define EV_ASYNC_ENABLE 1 |
|
|
91 | #endif |
|
|
92 | |
77 | #ifndef EV_EMBED_ENABLE |
93 | #ifndef EV_EMBED_ENABLE |
78 | # define EV_EMBED_ENABLE 1 |
94 | # define EV_EMBED_ENABLE 1 |
79 | #endif |
95 | #endif |
80 | |
96 | |
81 | #ifndef EV_ASYNC_ENABLE |
97 | #ifndef EV_WALK_ENABLE |
82 | # define EV_ASYNC_ENABLE 1 |
98 | # define EV_WALK_ENABLE 0 /* not yet */ |
83 | #endif |
99 | #endif |
84 | |
100 | |
85 | #ifndef EV_ATOMIC_T |
101 | #ifndef EV_ATOMIC_T |
86 | # include <signal.h> |
102 | # include <signal.h> |
87 | # define EV_ATOMIC_T sig_atomic_t volatile |
103 | # define EV_ATOMIC_T sig_atomic_t volatile |
88 | #endif |
104 | #endif |
89 | |
105 | |
90 | /*****************************************************************************/ |
106 | /*****************************************************************************/ |
91 | |
107 | |
|
|
108 | #if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE |
|
|
109 | # undef EV_SIGNAL_ENABLE |
|
|
110 | # define EV_SIGNAL_ENABLE 1 |
|
|
111 | #endif |
|
|
112 | |
92 | #if EV_STAT_ENABLE |
113 | #if EV_STAT_ENABLE |
|
|
114 | # ifdef _WIN32 |
|
|
115 | # include <time.h> |
|
|
116 | # include <sys/types.h> |
|
|
117 | # endif |
93 | # include <sys/stat.h> |
118 | # include <sys/stat.h> |
94 | #endif |
119 | #endif |
95 | |
120 | |
96 | /* support multiple event loops? */ |
121 | /* support multiple event loops? */ |
97 | #if EV_MULTIPLICITY |
122 | #if EV_MULTIPLICITY |
98 | struct ev_loop; |
123 | struct ev_loop; |
99 | # define EV_P struct ev_loop *loop |
124 | # define EV_P struct ev_loop *loop |
100 | # define EV_P_ EV_P, |
125 | # define EV_P_ EV_P, |
101 | # define EV_A loop |
126 | # define EV_A loop |
102 | # define EV_A_ EV_A, |
127 | # define EV_A_ EV_A, |
|
|
128 | # define EV_DEFAULT_UC ev_default_loop_uc () |
|
|
129 | # define EV_DEFAULT_UC_ EV_DEFAULT_UC, |
103 | # define EV_DEFAULT ev_default_loop (0) |
130 | # define EV_DEFAULT ev_default_loop (0) |
104 | # define EV_DEFAULT_ EV_DEFAULT, |
131 | # define EV_DEFAULT_ EV_DEFAULT, |
105 | #else |
132 | #else |
106 | # define EV_P void |
133 | # define EV_P void |
107 | # define EV_P_ |
134 | # define EV_P_ |
108 | # define EV_A |
135 | # define EV_A |
109 | # define EV_A_ |
136 | # define EV_A_ |
110 | # define EV_DEFAULT |
137 | # define EV_DEFAULT |
111 | # define EV_DEFAULT_ |
138 | # define EV_DEFAULT_ |
112 | |
139 | # define EV_DEFAULT_UC |
|
|
140 | # define EV_DEFAULT_UC_ |
113 | # undef EV_EMBED_ENABLE |
141 | # undef EV_EMBED_ENABLE |
114 | #endif |
142 | #endif |
115 | |
143 | |
|
|
144 | #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 |
|
|
145 | # define EV_INLINE static inline |
|
|
146 | #else |
|
|
147 | # define EV_INLINE static |
|
|
148 | #endif |
|
|
149 | |
|
|
150 | /*****************************************************************************/ |
|
|
151 | |
116 | /* eventmask, revents, events... */ |
152 | /* eventmask, revents, events... */ |
117 | #define EV_UNDEF -1L /* guaranteed to be invalid */ |
153 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
118 | #define EV_NONE 0x00L /* no events */ |
154 | #define EV_NONE 0x00 /* no events */ |
119 | #define EV_READ 0x01L /* ev_io detected read will not block */ |
155 | #define EV_READ 0x01 /* ev_io detected read will not block */ |
120 | #define EV_WRITE 0x02L /* ev_io detected write will not block */ |
156 | #define EV_WRITE 0x02 /* ev_io detected write will not block */ |
121 | #define EV_IOFDSET 0x80L /* internal use only */ |
157 | #define EV__IOFDSET 0x80 /* internal use only */ |
|
|
158 | #define EV_IO EV_READ /* alias for type-detection */ |
122 | #define EV_TIMEOUT 0x00000100L /* timer timed out */ |
159 | #define EV_TIMEOUT 0x00000100 /* timer timed out */ |
|
|
160 | #define EV_TIMER EV_TIMEOUT /* alias for type-detection */ |
123 | #define EV_PERIODIC 0x00000200L /* periodic timer timed out */ |
161 | #define EV_PERIODIC 0x00000200 /* periodic timer timed out */ |
124 | #define EV_SIGNAL 0x00000400L /* signal was received */ |
162 | #define EV_SIGNAL 0x00000400 /* signal was received */ |
125 | #define EV_CHILD 0x00000800L /* child/pid had status change */ |
163 | #define EV_CHILD 0x00000800 /* child/pid had status change */ |
126 | #define EV_STAT 0x00001000L /* stat data changed */ |
164 | #define EV_STAT 0x00001000 /* stat data changed */ |
127 | #define EV_IDLE 0x00002000L /* event loop is idling */ |
165 | #define EV_IDLE 0x00002000 /* event loop is idling */ |
128 | #define EV_PREPARE 0x00004000L /* event loop about to poll */ |
166 | #define EV_PREPARE 0x00004000 /* event loop about to poll */ |
129 | #define EV_CHECK 0x00008000L /* event loop finished poll */ |
167 | #define EV_CHECK 0x00008000 /* event loop finished poll */ |
130 | #define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ |
168 | #define EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
131 | #define EV_FORK 0x00020000L /* event loop resumed in child */ |
169 | #define EV_FORK 0x00020000 /* event loop resumed in child */ |
132 | #define EV_ASYNC 0x00040000L /* async intra-loop signal */ |
170 | #define EV_ASYNC 0x00040000 /* async intra-loop signal */ |
|
|
171 | #define EV_CUSTOM 0x01000000 /* for use by user code */ |
133 | #define EV_ERROR 0x80000000L /* sent when an error occurs */ |
172 | #define EV_ERROR 0x80000000 /* sent when an error occurs */ |
134 | |
173 | |
135 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
174 | /* can be used to add custom fields to all watchers, while losing binary compatibility */ |
136 | #ifndef EV_COMMON |
175 | #ifndef EV_COMMON |
137 | # define EV_COMMON void *data; |
176 | # define EV_COMMON void *data; |
138 | #endif |
177 | #endif |
139 | #ifndef EV_PROTOTYPES |
178 | #ifndef EV_PROTOTYPES |
140 | # define EV_PROTOTYPES 1 |
179 | # define EV_PROTOTYPES 1 |
141 | #endif |
180 | #endif |
142 | |
181 | |
143 | #define EV_VERSION_MAJOR 3 |
182 | #define EV_VERSION_MAJOR 3 |
144 | #define EV_VERSION_MINOR 0 |
183 | #define EV_VERSION_MINOR 9 |
145 | |
184 | |
146 | #ifndef EV_CB_DECLARE |
185 | #ifndef EV_CB_DECLARE |
147 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
186 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
148 | #endif |
187 | #endif |
149 | #ifndef EV_CB_INVOKE |
188 | #ifndef EV_CB_INVOKE |
150 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
189 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
151 | #endif |
190 | #endif |
152 | |
191 | |
153 | /* |
192 | /* |
154 | * struct member types: |
193 | * struct member types: |
155 | * private: you can look at them, but not change them, and they might not mean anything to you. |
194 | * private: you may look at them, but not change them, |
|
|
195 | * and they might not mean anything to you. |
156 | * ro: can be read anytime, but only changed when the watcher isn't active |
196 | * ro: can be read anytime, but only changed when the watcher isn't active. |
157 | * rw: can be read and modified anytime, even when the watcher is active |
197 | * rw: can be read and modified anytime, even when the watcher is active. |
|
|
198 | * |
|
|
199 | * some internal details that might be helpful for debugging: |
|
|
200 | * |
|
|
201 | * active is either 0, which means the watcher is not active, |
|
|
202 | * or the array index of the watcher (periodics, timers) |
|
|
203 | * or the array index + 1 (most other watchers) |
|
|
204 | * or simply 1 for watchers that aren't in some array. |
|
|
205 | * pending is either 0, in which case the watcher isn't, |
|
|
206 | * or the array index + 1 in the pendings array. |
158 | */ |
207 | */ |
|
|
208 | |
|
|
209 | #if EV_MINPRI == EV_MAXPRI |
|
|
210 | # define EV_DECL_PRIORITY |
|
|
211 | #else |
|
|
212 | # define EV_DECL_PRIORITY int priority; |
|
|
213 | #endif |
159 | |
214 | |
160 | /* shared by all watchers */ |
215 | /* shared by all watchers */ |
161 | #define EV_WATCHER(type) \ |
216 | #define EV_WATCHER(type) \ |
162 | int active; /* private */ \ |
217 | int active; /* private */ \ |
163 | int pending; /* private */ \ |
218 | int pending; /* private */ \ |
164 | int priority; /* private */ \ |
219 | EV_DECL_PRIORITY /* private */ \ |
165 | EV_COMMON /* rw */ \ |
220 | EV_COMMON /* rw */ \ |
166 | EV_CB_DECLARE (type) /* private */ |
221 | EV_CB_DECLARE (type) /* private */ |
167 | |
222 | |
168 | #define EV_WATCHER_LIST(type) \ |
223 | #define EV_WATCHER_LIST(type) \ |
169 | EV_WATCHER (type) \ |
224 | EV_WATCHER (type) \ |
… | |
… | |
311 | ev_prepare prepare; /* private */ |
366 | ev_prepare prepare; /* private */ |
312 | ev_check check; /* unused */ |
367 | ev_check check; /* unused */ |
313 | ev_timer timer; /* unused */ |
368 | ev_timer timer; /* unused */ |
314 | ev_periodic periodic; /* unused */ |
369 | ev_periodic periodic; /* unused */ |
315 | ev_idle idle; /* unused */ |
370 | ev_idle idle; /* unused */ |
316 | ev_fork fork; /* unused */ |
371 | ev_fork fork; /* private */ |
317 | } ev_embed; |
372 | } ev_embed; |
318 | #endif |
373 | #endif |
319 | |
374 | |
320 | #if EV_ASYNC_ENABLE |
375 | #if EV_ASYNC_ENABLE |
321 | /* invoked when somebody calls ev_async_send on the watcher */ |
376 | /* invoked when somebody calls ev_async_send on the watcher */ |
… | |
… | |
325 | EV_WATCHER (ev_async) |
380 | EV_WATCHER (ev_async) |
326 | |
381 | |
327 | EV_ATOMIC_T sent; /* private */ |
382 | EV_ATOMIC_T sent; /* private */ |
328 | } ev_async; |
383 | } ev_async; |
329 | |
384 | |
330 | # define ev_async_pending(w) (((w)->sent + 0) |
385 | # define ev_async_pending(w) (+(w)->sent) |
331 | #endif |
386 | #endif |
332 | |
387 | |
333 | /* the presence of this union forces similar struct layout */ |
388 | /* the presence of this union forces similar struct layout */ |
334 | union ev_any_watcher |
389 | union ev_any_watcher |
335 | { |
390 | { |
… | |
… | |
353 | struct ev_fork fork; |
408 | struct ev_fork fork; |
354 | #endif |
409 | #endif |
355 | #if EV_EMBED_ENABLE |
410 | #if EV_EMBED_ENABLE |
356 | struct ev_embed embed; |
411 | struct ev_embed embed; |
357 | #endif |
412 | #endif |
358 | #if EV_ASYND_ENABLE |
413 | #if EV_ASYNC_ENABLE |
359 | struct ev_async async; |
414 | struct ev_async async; |
360 | #endif |
415 | #endif |
361 | }; |
416 | }; |
362 | |
417 | |
363 | /* bits for ev_default_loop and ev_loop_new */ |
418 | /* bits for ev_default_loop and ev_loop_new */ |
364 | /* the default */ |
419 | /* the default */ |
365 | #define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ |
420 | #define EVFLAG_AUTO 0x00000000U /* not quite a mask */ |
366 | /* flag bits */ |
421 | /* flag bits */ |
367 | #define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ |
422 | #define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */ |
368 | #define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ |
423 | #define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */ |
|
|
424 | /* debugging/feature disable */ |
|
|
425 | #define EVFLAG_NOINOTIFY 0x00100000U /* do not attempt to use inotify */ |
|
|
426 | #define EVFLAG_NOSIGFD 0 /* compatibility to pre-3.9 */ |
|
|
427 | #define EVFLAG_SIGNALFD 0x00200000U /* attempt to use signalfd */ |
369 | /* method bits to be ored together */ |
428 | /* method bits to be ored together */ |
370 | #define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ |
429 | #define EVBACKEND_SELECT 0x00000001U /* about anywhere */ |
371 | #define EVBACKEND_POLL 0x00000002UL /* !win */ |
430 | #define EVBACKEND_POLL 0x00000002U /* !win */ |
372 | #define EVBACKEND_EPOLL 0x00000004UL /* linux */ |
431 | #define EVBACKEND_EPOLL 0x00000004U /* linux */ |
373 | #define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ |
432 | #define EVBACKEND_KQUEUE 0x00000008U /* bsd */ |
374 | #define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ |
433 | #define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */ |
375 | #define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ |
434 | #define EVBACKEND_PORT 0x00000020U /* solaris 10 */ |
|
|
435 | #define EVBACKEND_ALL 0x0000003FU |
376 | |
436 | |
377 | #if EV_PROTOTYPES |
437 | #if EV_PROTOTYPES |
378 | int ev_version_major (void); |
438 | int ev_version_major (void); |
379 | int ev_version_minor (void); |
439 | int ev_version_minor (void); |
380 | |
440 | |
… | |
… | |
397 | * retryable syscall error |
457 | * retryable syscall error |
398 | * (such as failed select, poll, epoll_wait) |
458 | * (such as failed select, poll, epoll_wait) |
399 | */ |
459 | */ |
400 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
460 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
401 | |
461 | |
402 | # if EV_MULTIPLICITY |
462 | #if EV_MULTIPLICITY |
|
|
463 | EV_INLINE struct ev_loop * |
|
|
464 | ev_default_loop_uc (void) |
|
|
465 | { |
|
|
466 | extern struct ev_loop *ev_default_loop_ptr; |
|
|
467 | |
|
|
468 | return ev_default_loop_ptr; |
|
|
469 | } |
|
|
470 | |
403 | /* the default loop is the only one that handles signals and child watchers */ |
471 | /* the default loop is the only one that handles signals and child watchers */ |
404 | /* you can call this as often as you like */ |
472 | /* you can call this as often as you like */ |
405 | static struct ev_loop * |
473 | EV_INLINE struct ev_loop * |
406 | ev_default_loop (unsigned int flags) |
474 | ev_default_loop (unsigned int flags) |
407 | { |
475 | { |
408 | extern struct ev_loop *ev_default_loop_ptr; |
476 | struct ev_loop *loop = ev_default_loop_uc (); |
|
|
477 | |
|
|
478 | if (!loop) |
|
|
479 | { |
409 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
480 | extern struct ev_loop *ev_default_loop_init (unsigned int flags); |
410 | |
481 | |
411 | if (!ev_default_loop_ptr) |
|
|
412 | ev_default_loop_init (flags); |
482 | loop = ev_default_loop_init (flags); |
|
|
483 | } |
413 | |
484 | |
414 | return ev_default_loop_ptr; |
485 | return loop; |
415 | } |
486 | } |
416 | |
487 | |
417 | /* create and destroy alternative loops that don't handle signals */ |
488 | /* create and destroy alternative loops that don't handle signals */ |
418 | struct ev_loop *ev_loop_new (unsigned int flags); |
489 | struct ev_loop *ev_loop_new (unsigned int flags); |
419 | void ev_loop_destroy (EV_P); |
490 | void ev_loop_destroy (EV_P); |
420 | void ev_loop_fork (EV_P); |
491 | void ev_loop_fork (EV_P); |
421 | |
492 | |
422 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
493 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
423 | |
494 | |
424 | # else |
495 | #else |
425 | |
496 | |
426 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
497 | int ev_default_loop (unsigned int flags); /* returns true when successful */ |
427 | |
498 | |
428 | static ev_tstamp |
499 | EV_INLINE ev_tstamp |
429 | ev_now (void) |
500 | ev_now (void) |
430 | { |
501 | { |
431 | extern ev_tstamp ev_rt_now; |
502 | extern ev_tstamp ev_rt_now; |
432 | |
503 | |
433 | return ev_rt_now; |
504 | return ev_rt_now; |
434 | } |
505 | } |
435 | # endif |
506 | #endif /* multiplicity */ |
436 | |
507 | |
437 | static int |
508 | EV_INLINE int |
438 | ev_is_default_loop (EV_P) |
509 | ev_is_default_loop (EV_P) |
439 | { |
510 | { |
440 | #if EV_MULTIPLICITY |
511 | #if EV_MULTIPLICITY |
441 | extern struct ev_loop *ev_default_loop_ptr; |
512 | extern struct ev_loop *ev_default_loop_ptr; |
442 | |
513 | |
… | |
… | |
451 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
522 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
452 | /* you can call it in either the parent or the child */ |
523 | /* you can call it in either the parent or the child */ |
453 | /* you can actually call it at any time, anywhere :) */ |
524 | /* you can actually call it at any time, anywhere :) */ |
454 | void ev_default_fork (void); |
525 | void ev_default_fork (void); |
455 | |
526 | |
456 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
527 | unsigned int ev_backend (EV_P); /* backend in use by loop */ |
457 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
528 | |
|
|
529 | void ev_now_update (EV_P); /* update event loop time */ |
|
|
530 | |
|
|
531 | #if EV_WALK_ENABLE |
|
|
532 | /* walk (almost) all watchers in the loop of a given type, invoking the */ |
|
|
533 | /* callback on every such watcher. The callback might stop the watcher, */ |
|
|
534 | /* but do nothing else with the loop */ |
|
|
535 | void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); |
458 | #endif |
536 | #endif |
|
|
537 | |
|
|
538 | #endif /* prototypes */ |
459 | |
539 | |
460 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
540 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
461 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
541 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
462 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
542 | #define EVUNLOOP_CANCEL 0 /* undo unloop */ |
463 | #define EVUNLOOP_ONE 1 /* unloop once */ |
543 | #define EVUNLOOP_ONE 1 /* unloop once */ |
… | |
… | |
465 | |
545 | |
466 | #if EV_PROTOTYPES |
546 | #if EV_PROTOTYPES |
467 | void ev_loop (EV_P_ int flags); |
547 | void ev_loop (EV_P_ int flags); |
468 | 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 */ |
548 | 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 */ |
469 | |
549 | |
470 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
|
|
471 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
|
|
472 | |
|
|
473 | /* |
550 | /* |
474 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
551 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
475 | * keeps one reference. if you have a long-runing watcher you never unregister that |
552 | * keeps one reference. if you have a long-running watcher you never unregister that |
476 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
553 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
477 | */ |
554 | */ |
478 | void ev_ref (EV_P); |
555 | void ev_ref (EV_P); |
479 | void ev_unref (EV_P); |
556 | void ev_unref (EV_P); |
480 | |
557 | |
|
|
558 | /* |
481 | /* convinience function, wait for a single event, without registering an event watcher */ |
559 | * convenience function, wait for a single event, without registering an event watcher |
482 | /* if timeout is < 0, do wait indefinitely */ |
560 | * if timeout is < 0, do wait indefinitely |
|
|
561 | */ |
483 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
562 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
|
|
563 | |
|
|
564 | # if EV_MINIMAL < 2 |
|
|
565 | unsigned int ev_loop_count (EV_P); /* number of loop iterations */ |
|
|
566 | unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */ |
|
|
567 | void ev_loop_verify (EV_P); /* abort if loop data corrupted */ |
|
|
568 | |
|
|
569 | void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
|
|
570 | void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ |
|
|
571 | |
|
|
572 | /* advanced stuff for threading etc. support, see docs */ |
|
|
573 | void ev_set_userdata (EV_P_ void *data); |
|
|
574 | void *ev_userdata (EV_P); |
|
|
575 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); |
|
|
576 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); |
|
|
577 | |
|
|
578 | unsigned int ev_pending_count (EV_P); /* number of pending events, if any */ |
|
|
579 | void ev_invoke_pending (EV_P); /* invoke all pending watchers */ |
|
|
580 | |
|
|
581 | /* |
|
|
582 | * stop/start the timer handling. |
|
|
583 | */ |
|
|
584 | void ev_suspend (EV_P); |
|
|
585 | void ev_resume (EV_P); |
|
|
586 | #endif |
|
|
587 | |
484 | #endif |
588 | #endif |
485 | |
589 | |
486 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
590 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
487 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
591 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
488 | #define ev_init(ev,cb_) do { \ |
592 | #define ev_init(ev,cb_) do { \ |
489 | ((ev_watcher *)(void *)(ev))->active = \ |
593 | ((ev_watcher *)(void *)(ev))->active = \ |
490 | ((ev_watcher *)(void *)(ev))->pending = \ |
594 | ((ev_watcher *)(void *)(ev))->pending = 0; \ |
491 | ((ev_watcher *)(void *)(ev))->priority = 0; \ |
595 | ev_set_priority ((ev), 0); \ |
492 | ev_set_cb ((ev), cb_); \ |
596 | ev_set_cb ((ev), cb_); \ |
493 | } while (0) |
597 | } while (0) |
494 | |
598 | |
495 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) |
599 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) |
496 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
600 | #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) |
497 | #define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
601 | #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) |
498 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
602 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
499 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
603 | #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) |
500 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
604 | #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) |
501 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
605 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
502 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
606 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
503 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
607 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
504 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
608 | #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) |
505 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
609 | #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ |
506 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
610 | #define ev_async_set(ev) do { (ev)->sent = 0; } while (0) |
507 | |
611 | |
508 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
612 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
509 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
613 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
510 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
614 | #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) |
511 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
615 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
512 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
616 | #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) |
513 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
617 | #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) |
514 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
618 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
515 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
619 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
516 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
620 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
517 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
621 | #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) |
518 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
622 | #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) |
519 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
623 | #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) |
520 | |
624 | |
521 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
625 | #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
522 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
626 | #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
523 | |
627 | |
524 | #define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) |
|
|
525 | #define ev_cb(ev) (ev)->cb /* rw */ |
628 | #define ev_cb(ev) (ev)->cb /* rw */ |
|
|
629 | |
|
|
630 | #if EV_MINPRI == EV_MAXPRI |
|
|
631 | # define ev_priority(ev) ((ev), EV_MINPRI) |
|
|
632 | # define ev_set_priority(ev,pri) ((ev), (pri)) |
|
|
633 | #else |
|
|
634 | # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) |
526 | #define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) |
635 | # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) |
|
|
636 | #endif |
|
|
637 | |
|
|
638 | #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) |
527 | |
639 | |
528 | #ifndef ev_set_cb |
640 | #ifndef ev_set_cb |
529 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
641 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
530 | #endif |
642 | #endif |
531 | |
643 | |
532 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
644 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
533 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
645 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
534 | #if EV_PROTOTYPES |
646 | #if EV_PROTOTYPES |
535 | |
647 | |
536 | /* feeds an event into a watcher as if the event actually occured */ |
648 | /* feeds an event into a watcher as if the event actually occured */ |
537 | /* accepts any ev_watcher type */ |
649 | /* accepts any ev_watcher type */ |
538 | void ev_feed_event (EV_P_ void *w, int revents); |
650 | void ev_feed_event (EV_P_ void *w, int revents); |
539 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
651 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
|
|
652 | #if EV_SIGNAL_ENABLE |
540 | void ev_feed_signal_event (EV_P_ int signum); |
653 | void ev_feed_signal_event (EV_P_ int signum); |
|
|
654 | #endif |
541 | void ev_invoke (EV_P_ void *w, int revents); |
655 | void ev_invoke (EV_P_ void *w, int revents); |
542 | int ev_clear_pending (EV_P_ void *w); |
656 | int ev_clear_pending (EV_P_ void *w); |
543 | |
657 | |
544 | void ev_io_start (EV_P_ ev_io *w); |
658 | void ev_io_start (EV_P_ ev_io *w); |
545 | void ev_io_stop (EV_P_ ev_io *w); |
659 | void ev_io_stop (EV_P_ ev_io *w); |
546 | |
660 | |
547 | void ev_timer_start (EV_P_ ev_timer *w); |
661 | void ev_timer_start (EV_P_ ev_timer *w); |
548 | void ev_timer_stop (EV_P_ ev_timer *w); |
662 | void ev_timer_stop (EV_P_ ev_timer *w); |
549 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
663 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
550 | void ev_timer_again (EV_P_ ev_timer *w); |
664 | void ev_timer_again (EV_P_ ev_timer *w); |
|
|
665 | /* return remaining time */ |
|
|
666 | ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); |
551 | |
667 | |
552 | #if EV_PERIODIC_ENABLE |
668 | #if EV_PERIODIC_ENABLE |
553 | void ev_periodic_start (EV_P_ ev_periodic *w); |
669 | void ev_periodic_start (EV_P_ ev_periodic *w); |
554 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
670 | void ev_periodic_stop (EV_P_ ev_periodic *w); |
555 | void ev_periodic_again (EV_P_ ev_periodic *w); |
671 | void ev_periodic_again (EV_P_ ev_periodic *w); |
556 | #endif |
672 | #endif |
557 | |
673 | |
558 | /* only supported in the default loop */ |
674 | /* only supported in the default loop */ |
|
|
675 | #if EV_SIGNAL_ENABLE |
559 | void ev_signal_start (EV_P_ ev_signal *w); |
676 | void ev_signal_start (EV_P_ ev_signal *w); |
560 | void ev_signal_stop (EV_P_ ev_signal *w); |
677 | void ev_signal_stop (EV_P_ ev_signal *w); |
|
|
678 | #endif |
561 | |
679 | |
562 | /* only supported in the default loop */ |
680 | /* only supported in the default loop */ |
|
|
681 | # if EV_CHILD_ENABLE |
563 | void ev_child_start (EV_P_ ev_child *w); |
682 | void ev_child_start (EV_P_ ev_child *w); |
564 | void ev_child_stop (EV_P_ ev_child *w); |
683 | void ev_child_stop (EV_P_ ev_child *w); |
|
|
684 | # endif |
565 | |
685 | |
566 | # if EV_STAT_ENABLE |
686 | # if EV_STAT_ENABLE |
567 | void ev_stat_start (EV_P_ ev_stat *w); |
687 | void ev_stat_start (EV_P_ ev_stat *w); |
568 | void ev_stat_stop (EV_P_ ev_stat *w); |
688 | void ev_stat_stop (EV_P_ ev_stat *w); |
569 | void ev_stat_stat (EV_P_ ev_stat *w); |
689 | void ev_stat_stat (EV_P_ ev_stat *w); |