2 * libev native API header
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met:
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
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15 * documentation and/or other materials provided with the distribution.
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19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
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49 #define EV_THROW EV_CPP(throw())
51 /* apple's proprietary clang fork errors out with exception specifications */
52 /* in all sorts of places, so let's not even bother with them */
53 /* users are strongly advised to install clang or gcc */
54 #if __APPLE__ && __clang__
61 /*****************************************************************************/
63 /* pre-4.0 compatibility */
69 # if defined __OPTIMIZE_SIZE__
70 # define EV_FEATURES 0x7c
72 # define EV_FEATURES 0x7f
76 #define EV_FEATURE_CODE ((EV_FEATURES) & 1)
77 #define EV_FEATURE_DATA ((EV_FEATURES) & 2)
78 #define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
79 #define EV_FEATURE_API ((EV_FEATURES) & 8)
80 #define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
81 #define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
82 #define EV_FEATURE_OS ((EV_FEATURES) & 64)
84 /* these priorities are inclusive, higher priorities will be invoked earlier */
86 # define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
89 # define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
92 #ifndef EV_MULTIPLICITY
93 # define EV_MULTIPLICITY EV_FEATURE_CONFIG
96 #ifndef EV_PERIODIC_ENABLE
97 # define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
100 #ifndef EV_STAT_ENABLE
101 # define EV_STAT_ENABLE EV_FEATURE_WATCHERS
104 #ifndef EV_PREPARE_ENABLE
105 # define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
108 #ifndef EV_CHECK_ENABLE
109 # define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
112 #ifndef EV_IDLE_ENABLE
113 # define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
116 #ifndef EV_FORK_ENABLE
117 # define EV_FORK_ENABLE EV_FEATURE_WATCHERS
120 #ifndef EV_CLEANUP_ENABLE
121 # define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
124 #ifndef EV_SIGNAL_ENABLE
125 # define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
128 #ifndef EV_CHILD_ENABLE
130 # define EV_CHILD_ENABLE 0
132 # define EV_CHILD_ENABLE EV_FEATURE_WATCHERS
136 #ifndef EV_ASYNC_ENABLE
137 # define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS
140 #ifndef EV_EMBED_ENABLE
141 # define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
144 #ifndef EV_WALK_ENABLE
145 # define EV_WALK_ENABLE 0 /* not yet */
148 /*****************************************************************************/
150 #if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE
151 # undef EV_SIGNAL_ENABLE
152 # define EV_SIGNAL_ENABLE 1
155 /*****************************************************************************/
157 typedef double ev_tstamp;
161 # define EV_ATOMIC_T sig_atomic_t volatile
167 # include <sys/types.h>
169 # include <sys/stat.h>
172 /* support multiple event loops? */
175 # define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */
176 # define EV_P_ EV_P, /* a loop as first of multiple parameters */
177 # define EV_A loop /* a loop as sole argument to a function call */
178 # define EV_A_ EV_A, /* a loop as first of multiple arguments */
179 # define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
180 # define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
181 # define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
182 # define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
190 # define EV_DEFAULT_UC
191 # define EV_DEFAULT_UC_
192 # undef EV_EMBED_ENABLE
195 /* EV_INLINE is used for functions in header files */
196 #if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
197 # define EV_INLINE static inline
199 # define EV_INLINE static
203 # define EV_API_DECL static
205 # define EV_API_DECL extern
208 /* EV_PROTOTYPES can be used to switch of prototype declarations */
209 #ifndef EV_PROTOTYPES
210 # define EV_PROTOTYPES 1
213 /*****************************************************************************/
215 #define EV_VERSION_MAJOR 4
216 #define EV_VERSION_MINOR 18
218 /* eventmask, revents, events... */
220 EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */
221 EV_NONE = 0x00, /* no events */
222 EV_READ = 0x01, /* ev_io detected read will not block */
223 EV_WRITE = 0x02, /* ev_io detected write will not block */
224 EV__IOFDSET = 0x80, /* internal use only */
225 EV_IO = EV_READ, /* alias for type-detection */
226 EV_TIMER = 0x00000100, /* timer timed out */
228 EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
230 EV_PERIODIC = 0x00000200, /* periodic timer timed out */
231 EV_SIGNAL = 0x00000400, /* signal was received */
232 EV_CHILD = 0x00000800, /* child/pid had status change */
233 EV_STAT = 0x00001000, /* stat data changed */
234 EV_IDLE = 0x00002000, /* event loop is idling */
235 EV_PREPARE = 0x00004000, /* event loop about to poll */
236 EV_CHECK = 0x00008000, /* event loop finished poll */
237 EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
238 EV_FORK = 0x00020000, /* event loop resumed in child */
239 EV_CLEANUP = 0x00040000, /* event loop resumed in child */
240 EV_ASYNC = 0x00080000, /* async intra-loop signal */
241 EV_CUSTOM = 0x01000000, /* for use by user code */
242 EV_ERROR = (int)0x80000000 /* sent when an error occurs */
245 /* can be used to add custom fields to all watchers, while losing binary compatibility */
247 # define EV_COMMON void *data;
250 #ifndef EV_CB_DECLARE
251 # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
254 # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
257 /* not official, do not use */
258 #define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
261 * struct member types:
262 * private: you may look at them, but not change them,
263 * and they might not mean anything to you.
264 * ro: can be read anytime, but only changed when the watcher isn't active.
265 * rw: can be read and modified anytime, even when the watcher is active.
267 * some internal details that might be helpful for debugging:
269 * active is either 0, which means the watcher is not active,
270 * or the array index of the watcher (periodics, timers)
271 * or the array index + 1 (most other watchers)
272 * or simply 1 for watchers that aren't in some array.
273 * pending is either 0, in which case the watcher isn't,
274 * or the array index + 1 in the pendings array.
277 #if EV_MINPRI == EV_MAXPRI
278 # define EV_DECL_PRIORITY
279 #elif !defined (EV_DECL_PRIORITY)
280 # define EV_DECL_PRIORITY int priority;
283 /* shared by all watchers */
284 #define EV_WATCHER(type) \
285 int active; /* private */ \
286 int pending; /* private */ \
287 EV_DECL_PRIORITY /* private */ \
289 EV_CB_DECLARE (type) /* private */
291 #define EV_WATCHER_LIST(type) \
293 struct ev_watcher_list *next; /* private */
295 #define EV_WATCHER_TIME(type) \
297 ev_tstamp at; /* private */
299 /* base class, nothing to see here unless you subclass */
300 typedef struct ev_watcher
302 EV_WATCHER (ev_watcher)
305 /* base class, nothing to see here unless you subclass */
306 typedef struct ev_watcher_list
308 EV_WATCHER_LIST (ev_watcher_list)
311 /* base class, nothing to see here unless you subclass */
312 typedef struct ev_watcher_time
314 EV_WATCHER_TIME (ev_watcher_time)
317 /* invoked when fd is either EV_READable or EV_WRITEable */
318 /* revent EV_READ, EV_WRITE */
321 EV_WATCHER_LIST (ev_io)
327 /* invoked after a specific time, repeatable (based on monotonic clock) */
328 /* revent EV_TIMEOUT */
329 typedef struct ev_timer
331 EV_WATCHER_TIME (ev_timer)
333 ev_tstamp repeat; /* rw */
336 /* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
337 /* revent EV_PERIODIC */
338 typedef struct ev_periodic
340 EV_WATCHER_TIME (ev_periodic)
342 ev_tstamp offset; /* rw */
343 ev_tstamp interval; /* rw */
344 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) EV_THROW; /* rw */
347 /* invoked when the given signal has been received */
348 /* revent EV_SIGNAL */
349 typedef struct ev_signal
351 EV_WATCHER_LIST (ev_signal)
356 /* invoked when sigchld is received and waitpid indicates the given pid */
357 /* revent EV_CHILD */
358 /* does not support priorities */
359 typedef struct ev_child
361 EV_WATCHER_LIST (ev_child)
363 int flags; /* private */
365 int rpid; /* rw, holds the received pid */
366 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
370 /* st_nlink = 0 means missing file or other error */
372 typedef struct _stati64 ev_statdata;
374 typedef struct stat ev_statdata;
377 /* invoked each time the stat data changes for a given path */
379 typedef struct ev_stat
381 EV_WATCHER_LIST (ev_stat)
383 ev_timer timer; /* private */
384 ev_tstamp interval; /* ro */
385 const char *path; /* ro */
386 ev_statdata prev; /* ro */
387 ev_statdata attr; /* ro */
389 int wd; /* wd for inotify, fd for kqueue */
394 /* invoked when the nothing else needs to be done, keeps the process from blocking */
396 typedef struct ev_idle
402 /* invoked for each run of the mainloop, just before the blocking call */
403 /* you can still change events in any way you like */
404 /* revent EV_PREPARE */
405 typedef struct ev_prepare
407 EV_WATCHER (ev_prepare)
410 /* invoked for each run of the mainloop, just after the blocking call */
411 /* revent EV_CHECK */
412 typedef struct ev_check
414 EV_WATCHER (ev_check)
418 /* the callback gets invoked before check in the child process when a fork was detected */
420 typedef struct ev_fork
426 #if EV_CLEANUP_ENABLE
427 /* is invoked just before the loop gets destroyed */
428 /* revent EV_CLEANUP */
429 typedef struct ev_cleanup
431 EV_WATCHER (ev_cleanup)
436 /* used to embed an event loop inside another */
437 /* the callback gets invoked when the event loop has handled events, and can be 0 */
438 typedef struct ev_embed
440 EV_WATCHER (ev_embed)
442 struct ev_loop *other; /* ro */
443 ev_io io; /* private */
444 ev_prepare prepare; /* private */
445 ev_check check; /* unused */
446 ev_timer timer; /* unused */
447 ev_periodic periodic; /* unused */
448 ev_idle idle; /* unused */
449 ev_fork fork; /* private */
450 #if EV_CLEANUP_ENABLE
451 ev_cleanup cleanup; /* unused */
457 /* invoked when somebody calls ev_async_send on the watcher */
458 /* revent EV_ASYNC */
459 typedef struct ev_async
461 EV_WATCHER (ev_async)
463 EV_ATOMIC_T sent; /* private */
466 # define ev_async_pending(w) (+(w)->sent)
469 /* the presence of this union forces similar struct layout */
473 struct ev_watcher_list wl;
476 struct ev_timer timer;
477 struct ev_periodic periodic;
478 struct ev_signal signal;
479 struct ev_child child;
486 struct ev_prepare prepare;
487 struct ev_check check;
491 #if EV_CLEANUP_ENABLE
492 struct ev_cleanup cleanup;
495 struct ev_embed embed;
498 struct ev_async async;
502 /* flag bits for ev_default_loop and ev_loop_new */
505 EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
507 EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
508 EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
509 /* debugging/feature disable */
510 EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
512 EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
514 EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */
515 EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */
518 /* method bits to be ored together */
520 EVBACKEND_SELECT = 0x00000001U, /* about anywhere */
521 EVBACKEND_POLL = 0x00000002U, /* !win */
522 EVBACKEND_EPOLL = 0x00000004U, /* linux */
523 EVBACKEND_KQUEUE = 0x00000008U, /* bsd */
524 EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
525 EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
526 EVBACKEND_ALL = 0x0000003FU, /* all known backends */
527 EVBACKEND_MASK = 0x0000FFFFU /* all future backends */
531 EV_API_DECL int ev_version_major (void) EV_THROW;
532 EV_API_DECL int ev_version_minor (void) EV_THROW;
534 EV_API_DECL unsigned int ev_supported_backends (void) EV_THROW;
535 EV_API_DECL unsigned int ev_recommended_backends (void) EV_THROW;
536 EV_API_DECL unsigned int ev_embeddable_backends (void) EV_THROW;
538 EV_API_DECL ev_tstamp ev_time (void) EV_THROW;
539 EV_API_DECL void ev_sleep (ev_tstamp delay) EV_THROW; /* sleep for a while */
541 /* Sets the allocation function to use, works like realloc.
542 * It is used to allocate and free memory.
543 * If it returns zero when memory needs to be allocated, the library might abort
544 * or take some potentially destructive action.
545 * The default is your system realloc function.
547 EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW;
549 /* set the callback function to call on a
550 * retryable syscall error
551 * (such as failed select, poll, epoll_wait)
553 EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW;
557 /* the default loop is the only one that handles signals and child watchers */
558 /* you can call this as often as you like */
559 EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW;
562 EV_API_DECL struct ev_loop *ev_default_loop_ptr;
565 EV_INLINE struct ev_loop *
566 ev_default_loop_uc_ (void) EV_THROW
568 extern struct ev_loop *ev_default_loop_ptr;
570 return ev_default_loop_ptr;
574 ev_is_default_loop (EV_P) EV_THROW
576 return EV_A == EV_DEFAULT_UC;
579 /* create and destroy alternative loops that don't handle signals */
580 EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)) EV_THROW;
582 EV_API_DECL ev_tstamp ev_now (EV_P) EV_THROW; /* time w.r.t. timers and the eventloop, updated after each poll */
586 EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW; /* returns true when successful */
588 EV_API_DECL ev_tstamp ev_rt_now;
591 ev_now (void) EV_THROW
596 /* looks weird, but ev_is_default_loop (EV_A) still works if this exists */
598 ev_is_default_loop (void) EV_THROW
603 #endif /* multiplicity */
605 /* destroy event loops, also works for the default loop */
606 EV_API_DECL void ev_loop_destroy (EV_P);
608 /* this needs to be called after fork, to duplicate the loop */
609 /* when you want to re-use it in the child */
610 /* you can call it in either the parent or the child */
611 /* you can actually call it at any time, anywhere :) */
612 EV_API_DECL void ev_loop_fork (EV_P) EV_THROW;
614 EV_API_DECL unsigned int ev_backend (EV_P) EV_THROW; /* backend in use by loop */
616 EV_API_DECL void ev_now_update (EV_P) EV_THROW; /* update event loop time */
619 /* walk (almost) all watchers in the loop of a given type, invoking the */
620 /* callback on every such watcher. The callback might stop the watcher, */
621 /* but do nothing else with the loop */
622 EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW;
625 #endif /* prototypes */
627 /* ev_run flags values */
629 EVRUN_NOWAIT = 1, /* do not block/wait */
630 EVRUN_ONCE = 2 /* block *once* only */
633 /* ev_break how values */
635 EVBREAK_CANCEL = 0, /* undo unloop */
636 EVBREAK_ONE = 1, /* unloop once */
637 EVBREAK_ALL = 2 /* unloop all loops */
641 EV_API_DECL int ev_run (EV_P_ int flags EV_CPP (= 0));
642 EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)) EV_THROW; /* break out of the loop */
645 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
646 * keeps one reference. if you have a long-running watcher you never unregister that
647 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
649 EV_API_DECL void ev_ref (EV_P) EV_THROW;
650 EV_API_DECL void ev_unref (EV_P) EV_THROW;
653 * convenience function, wait for a single event, without registering an event watcher
654 * if timeout is < 0, do wait indefinitely
656 EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW;
659 EV_API_DECL unsigned int ev_iteration (EV_P) EV_THROW; /* number of loop iterations */
660 EV_API_DECL unsigned int ev_depth (EV_P) EV_THROW; /* #ev_loop enters - #ev_loop leaves */
661 EV_API_DECL void ev_verify (EV_P) EV_THROW; /* abort if loop data corrupted */
663 EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */
664 EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */
666 /* advanced stuff for threading etc. support, see docs */
667 EV_API_DECL void ev_set_userdata (EV_P_ void *data) EV_THROW;
668 EV_API_DECL void *ev_userdata (EV_P) EV_THROW;
669 typedef void (*ev_loop_callback)(EV_P);
670 EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW;
671 EV_API_DECL void ev_set_loop_release_cb (EV_P_ ev_loop_callback EV_THROW release, ev_loop_callback EV_THROW acquire) EV_THROW;
673 EV_API_DECL unsigned int ev_pending_count (EV_P) EV_THROW; /* number of pending events, if any */
674 EV_API_DECL void ev_invoke_pending (EV_P); /* invoke all pending watchers */
677 * stop/start the timer handling.
679 EV_API_DECL void ev_suspend (EV_P) EV_THROW;
680 EV_API_DECL void ev_resume (EV_P) EV_THROW;
685 /* these may evaluate ev multiple times, and the other arguments at most once */
686 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
687 #define ev_init(ev,cb_) do { \
688 ((ev_watcher *)(void *)(ev))->active = \
689 ((ev_watcher *)(void *)(ev))->pending = 0; \
690 ev_set_priority ((ev), 0); \
691 ev_set_cb ((ev), cb_); \
694 #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
695 #define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
696 #define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
697 #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
698 #define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
699 #define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
700 #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
701 #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
702 #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
703 #define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
704 #define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
705 #define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
706 #define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
708 #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
709 #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
710 #define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
711 #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
712 #define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
713 #define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
714 #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
715 #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
716 #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
717 #define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
718 #define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
719 #define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0)
720 #define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
722 #define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
723 #define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
725 #define ev_cb(ev) (ev)->cb /* rw */
727 #if EV_MINPRI == EV_MAXPRI
728 # define ev_priority(ev) ((ev), EV_MINPRI)
729 # define ev_set_priority(ev,pri) ((ev), (pri))
731 # define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
732 # define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
735 #define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
738 # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
741 /* stopping (enabling, adding) a watcher does nothing if it is already running */
742 /* stopping (disabling, deleting) a watcher does nothing unless it's already running */
745 /* feeds an event into a watcher as if the event actually occurred */
746 /* accepts any ev_watcher type */
747 EV_API_DECL void ev_feed_event (EV_P_ void *w, int revents) EV_THROW;
748 EV_API_DECL void ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW;
750 EV_API_DECL void ev_feed_signal (int signum) EV_THROW;
751 EV_API_DECL void ev_feed_signal_event (EV_P_ int signum) EV_THROW;
753 EV_API_DECL void ev_invoke (EV_P_ void *w, int revents);
754 EV_API_DECL int ev_clear_pending (EV_P_ void *w) EV_THROW;
756 EV_API_DECL void ev_io_start (EV_P_ ev_io *w) EV_THROW;
757 EV_API_DECL void ev_io_stop (EV_P_ ev_io *w) EV_THROW;
759 EV_API_DECL void ev_timer_start (EV_P_ ev_timer *w) EV_THROW;
760 EV_API_DECL void ev_timer_stop (EV_P_ ev_timer *w) EV_THROW;
761 /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
762 EV_API_DECL void ev_timer_again (EV_P_ ev_timer *w) EV_THROW;
763 /* return remaining time */
764 EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW;
766 #if EV_PERIODIC_ENABLE
767 EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW;
768 EV_API_DECL void ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW;
769 EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW;
772 /* only supported in the default loop */
774 EV_API_DECL void ev_signal_start (EV_P_ ev_signal *w) EV_THROW;
775 EV_API_DECL void ev_signal_stop (EV_P_ ev_signal *w) EV_THROW;
778 /* only supported in the default loop */
780 EV_API_DECL void ev_child_start (EV_P_ ev_child *w) EV_THROW;
781 EV_API_DECL void ev_child_stop (EV_P_ ev_child *w) EV_THROW;
785 EV_API_DECL void ev_stat_start (EV_P_ ev_stat *w) EV_THROW;
786 EV_API_DECL void ev_stat_stop (EV_P_ ev_stat *w) EV_THROW;
787 EV_API_DECL void ev_stat_stat (EV_P_ ev_stat *w) EV_THROW;
791 EV_API_DECL void ev_idle_start (EV_P_ ev_idle *w) EV_THROW;
792 EV_API_DECL void ev_idle_stop (EV_P_ ev_idle *w) EV_THROW;
795 #if EV_PREPARE_ENABLE
796 EV_API_DECL void ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW;
797 EV_API_DECL void ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW;
801 EV_API_DECL void ev_check_start (EV_P_ ev_check *w) EV_THROW;
802 EV_API_DECL void ev_check_stop (EV_P_ ev_check *w) EV_THROW;
806 EV_API_DECL void ev_fork_start (EV_P_ ev_fork *w) EV_THROW;
807 EV_API_DECL void ev_fork_stop (EV_P_ ev_fork *w) EV_THROW;
810 # if EV_CLEANUP_ENABLE
811 EV_API_DECL void ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW;
812 EV_API_DECL void ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW;
816 /* only supported when loop to be embedded is in fact embeddable */
817 EV_API_DECL void ev_embed_start (EV_P_ ev_embed *w) EV_THROW;
818 EV_API_DECL void ev_embed_stop (EV_P_ ev_embed *w) EV_THROW;
819 EV_API_DECL void ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW;
823 EV_API_DECL void ev_async_start (EV_P_ ev_async *w) EV_THROW;
824 EV_API_DECL void ev_async_stop (EV_P_ ev_async *w) EV_THROW;
825 EV_API_DECL void ev_async_send (EV_P_ ev_async *w) EV_THROW;
829 #define EVLOOP_NONBLOCK EVRUN_NOWAIT
830 #define EVLOOP_ONESHOT EVRUN_ONCE
831 #define EVUNLOOP_CANCEL EVBREAK_CANCEL
832 #define EVUNLOOP_ONE EVBREAK_ONE
833 #define EVUNLOOP_ALL EVBREAK_ALL
835 EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
836 EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
837 EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
838 EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
840 EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); }
841 EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); }
842 EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
846 typedef struct ev_loop ev_loop;