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Comparing libev/ev.h (file contents):
Revision 1.92 by root, Thu Jan 31 13:10:56 2008 UTC vs.
Revision 1.116 by root, Wed Jul 8 02:46:05 2009 UTC

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 *
… …
80 80
81#ifndef EV_ASYNC_ENABLE 81#ifndef EV_ASYNC_ENABLE
82# define EV_ASYNC_ENABLE 1 82# define EV_ASYNC_ENABLE 1
83#endif 83#endif
84 84
85#ifndef EV_WALK_ENABLE
86# define EV_WALK_ENABLE 0 /* not yet */
87#endif
88
85#ifndef EV_ATOMIC_T 89#ifndef EV_ATOMIC_T
86# include <signal.h> 90# include <signal.h>
87# define EV_ATOMIC_T sig_atomic_t volatile 91# define EV_ATOMIC_T sig_atomic_t volatile
88#endif 92#endif
89 93
90/*****************************************************************************/ 94/*****************************************************************************/
91 95
92#if EV_STAT_ENABLE 96#if EV_STAT_ENABLE
97# ifdef _WIN32
98# include <time.h>
99# include <sys/types.h>
100# endif
93# include <sys/stat.h> 101# include <sys/stat.h>
94#endif 102#endif
95 103
96/* support multiple event loops? */ 104/* support multiple event loops? */
97#if EV_MULTIPLICITY 105#if EV_MULTIPLICITY
98struct ev_loop; 106struct ev_loop;
99# define EV_P struct ev_loop *loop 107# define EV_P struct ev_loop *loop
100# define EV_P_ EV_P, 108# define EV_P_ EV_P,
101# define EV_A loop 109# define EV_A loop
102# define EV_A_ EV_A, 110# define EV_A_ EV_A,
111# define EV_DEFAULT_UC ev_default_loop_uc ()
112# define EV_DEFAULT_UC_ EV_DEFAULT_UC,
103# define EV_DEFAULT ev_default_loop (0) 113# define EV_DEFAULT ev_default_loop (0)
104# define EV_DEFAULT_ EV_DEFAULT, 114# define EV_DEFAULT_ EV_DEFAULT,
105#else 115#else
106# define EV_P void 116# define EV_P void
107# define EV_P_ 117# define EV_P_
108# define EV_A 118# define EV_A
109# define EV_A_ 119# define EV_A_
110# define EV_DEFAULT 120# define EV_DEFAULT
111# define EV_DEFAULT_ 121# define EV_DEFAULT_
112 122# define EV_DEFAULT_UC
123# define EV_DEFAULT_UC_
113# undef EV_EMBED_ENABLE 124# undef EV_EMBED_ENABLE
114#endif 125#endif
115 126
127#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
128# define EV_INLINE static inline
129#else
130# define EV_INLINE static
131#endif
132
133/*****************************************************************************/
134
116/* eventmask, revents, events... */ 135/* eventmask, revents, events... */
117#define EV_UNDEF -1L /* guaranteed to be invalid */ 136#define EV_UNDEF -1 /* guaranteed to be invalid */
118#define EV_NONE 0x00L /* no events */ 137#define EV_NONE 0x00 /* no events */
119#define EV_READ 0x01L /* ev_io detected read will not block */ 138#define EV_READ 0x01 /* ev_io detected read will not block */
120#define EV_WRITE 0x02L /* ev_io detected write will not block */ 139#define EV_WRITE 0x02 /* ev_io detected write will not block */
121#define EV_IOFDSET 0x80L /* internal use only */ 140#define EV__IOFDSET 0x80 /* internal use only */
141#define EV_IO EV_READ /* alias for type-detection */
122#define EV_TIMEOUT 0x00000100L /* timer timed out */ 142#define EV_TIMEOUT 0x00000100 /* timer timed out */
143#define EV_TIMER EV_TIMEOUT /* alias for type-detection */
123#define EV_PERIODIC 0x00000200L /* periodic timer timed out */ 144#define EV_PERIODIC 0x00000200 /* periodic timer timed out */
124#define EV_SIGNAL 0x00000400L /* signal was received */ 145#define EV_SIGNAL 0x00000400 /* signal was received */
125#define EV_CHILD 0x00000800L /* child/pid had status change */ 146#define EV_CHILD 0x00000800 /* child/pid had status change */
126#define EV_STAT 0x00001000L /* stat data changed */ 147#define EV_STAT 0x00001000 /* stat data changed */
127#define EV_IDLE 0x00002000L /* event loop is idling */ 148#define EV_IDLE 0x00002000 /* event loop is idling */
128#define EV_PREPARE 0x00004000L /* event loop about to poll */ 149#define EV_PREPARE 0x00004000 /* event loop about to poll */
129#define EV_CHECK 0x00008000L /* event loop finished poll */ 150#define EV_CHECK 0x00008000 /* event loop finished poll */
130#define EV_EMBED 0x00010000L /* embedded event loop needs sweep */ 151#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
131#define EV_FORK 0x00020000L /* event loop resumed in child */ 152#define EV_FORK 0x00020000 /* event loop resumed in child */
132#define EV_ASYNC 0x00040000L /* async intra-loop signal */ 153#define EV_ASYNC 0x00040000 /* async intra-loop signal */
154#define EV_CUSTOM 0x01000000 /* for use by user code */
133#define EV_ERROR 0x80000000L /* sent when an error occurs */ 155#define EV_ERROR 0x80000000 /* sent when an error occurs */
134 156
135/* can be used to add custom fields to all watchers, while losing binary compatibility */ 157/* can be used to add custom fields to all watchers, while losing binary compatibility */
136#ifndef EV_COMMON 158#ifndef EV_COMMON
137# define EV_COMMON void *data; 159# define EV_COMMON void *data;
138#endif 160#endif
… …
150# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) 172# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
151#endif 173#endif
152 174
153/* 175/*
154 * struct member types: 176 * struct member types:
155 * private: you can look at them, but not change them, and they might not mean anything to you. 177 * private: you may look at them, but not change them,
178 * and they might not mean anything to you.
156 * ro: can be read anytime, but only changed when the watcher isn't active 179 * 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 180 * rw: can be read and modified anytime, even when the watcher is active.
181 *
182 * some internal details that might be helpful for debugging:
183 *
184 * active is either 0, which means the watcher is not active,
185 * or the array index of the watcher (periodics, timers)
186 * or the array index + 1 (most other watchers)
187 * or simply 1 for watchers that aren't in some array.
188 * pending is either 0, in which case the watcher isn't,
189 * or the array index + 1 in the pendings array.
158 */ 190 */
159 191
160/* shared by all watchers */ 192/* shared by all watchers */
161#define EV_WATCHER(type) \ 193#define EV_WATCHER(type) \
162 int active; /* private */ \ 194 int active; /* private */ \
… …
311 ev_prepare prepare; /* private */ 343 ev_prepare prepare; /* private */
312 ev_check check; /* unused */ 344 ev_check check; /* unused */
313 ev_timer timer; /* unused */ 345 ev_timer timer; /* unused */
314 ev_periodic periodic; /* unused */ 346 ev_periodic periodic; /* unused */
315 ev_idle idle; /* unused */ 347 ev_idle idle; /* unused */
316 ev_fork fork; /* unused */ 348 ev_fork fork; /* private */
317} ev_embed; 349} ev_embed;
318#endif 350#endif
319 351
320#if EV_ASYNC_ENABLE 352#if EV_ASYNC_ENABLE
321/* invoked when somebody calls ev_async_send on the watcher */ 353/* invoked when somebody calls ev_async_send on the watcher */
… …
324{ 356{
325 EV_WATCHER (ev_async) 357 EV_WATCHER (ev_async)
326 358
327 EV_ATOMIC_T sent; /* private */ 359 EV_ATOMIC_T sent; /* private */
328} ev_async; 360} ev_async;
361
362# define ev_async_pending(w) ((w)->sent + 0)
329#endif 363#endif
330 364
331/* the presence of this union forces similar struct layout */ 365/* the presence of this union forces similar struct layout */
332union ev_any_watcher 366union ev_any_watcher
333{ 367{
… …
351 struct ev_fork fork; 385 struct ev_fork fork;
352#endif 386#endif
353#if EV_EMBED_ENABLE 387#if EV_EMBED_ENABLE
354 struct ev_embed embed; 388 struct ev_embed embed;
355#endif 389#endif
356#if EV_ASYND_ENABLE 390#if EV_ASYNC_ENABLE
357 struct ev_async async; 391 struct ev_async async;
358#endif 392#endif
359}; 393};
360 394
361/* bits for ev_default_loop and ev_loop_new */ 395/* bits for ev_default_loop and ev_loop_new */
362/* the default */ 396/* the default */
363#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ 397#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
364/* flag bits */ 398/* flag bits */
365#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ 399#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
366#define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */ 400#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
367/* method bits to be ored together */ 401/* method bits to be ored together */
368#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ 402#define EVBACKEND_SELECT 0x00000001U /* about anywhere */
369#define EVBACKEND_POLL 0x00000002UL /* !win */ 403#define EVBACKEND_POLL 0x00000002U /* !win */
370#define EVBACKEND_EPOLL 0x00000004UL /* linux */ 404#define EVBACKEND_EPOLL 0x00000004U /* linux */
371#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ 405#define EVBACKEND_KQUEUE 0x00000008U /* bsd */
372#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ 406#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
373#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ 407#define EVBACKEND_PORT 0x00000020U /* solaris 10 */
374 408
375#if EV_PROTOTYPES 409#if EV_PROTOTYPES
376int ev_version_major (void); 410int ev_version_major (void);
377int ev_version_minor (void); 411int ev_version_minor (void);
378 412
… …
395 * retryable syscall error 429 * retryable syscall error
396 * (such as failed select, poll, epoll_wait) 430 * (such as failed select, poll, epoll_wait)
397 */ 431 */
398void ev_set_syserr_cb (void (*cb)(const char *msg)); 432void ev_set_syserr_cb (void (*cb)(const char *msg));
399 433
400# if EV_MULTIPLICITY 434#if EV_MULTIPLICITY
435EV_INLINE struct ev_loop *
436ev_default_loop_uc (void)
437{
438 extern struct ev_loop *ev_default_loop_ptr;
439
440 return ev_default_loop_ptr;
441}
442
401/* the default loop is the only one that handles signals and child watchers */ 443/* the default loop is the only one that handles signals and child watchers */
402/* you can call this as often as you like */ 444/* you can call this as often as you like */
403static struct ev_loop * 445EV_INLINE struct ev_loop *
404ev_default_loop (unsigned int flags) 446ev_default_loop (unsigned int flags)
405{ 447{
406 extern struct ev_loop *ev_default_loop_ptr; 448 struct ev_loop *loop = ev_default_loop_uc ();
449
450 if (!loop)
451 {
407 extern struct ev_loop *ev_default_loop_init (unsigned int flags); 452 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
408 453
409 if (!ev_default_loop_ptr)
410 ev_default_loop_init (flags); 454 loop = ev_default_loop_init (flags);
455 }
411 456
412 return ev_default_loop_ptr; 457 return loop;
413} 458}
414 459
415/* create and destroy alternative loops that don't handle signals */ 460/* create and destroy alternative loops that don't handle signals */
416struct ev_loop *ev_loop_new (unsigned int flags); 461struct ev_loop *ev_loop_new (unsigned int flags);
417void ev_loop_destroy (EV_P); 462void ev_loop_destroy (EV_P);
418void ev_loop_fork (EV_P); 463void ev_loop_fork (EV_P);
419 464
420ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 465ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
466void ev_now_update (EV_P);
421 467
422# else 468#else
423 469
424int ev_default_loop (unsigned int flags); /* returns true when successful */ 470int ev_default_loop (unsigned int flags); /* returns true when successful */
425 471
426static ev_tstamp 472EV_INLINE ev_tstamp
427ev_now (void) 473ev_now (void)
428{ 474{
429 extern ev_tstamp ev_rt_now; 475 extern ev_tstamp ev_rt_now;
430 476
431 return ev_rt_now; 477 return ev_rt_now;
432} 478}
479#endif /* multiplicity */
480
481EV_INLINE int
482ev_is_default_loop (EV_P)
483{
484#if EV_MULTIPLICITY
485 extern struct ev_loop *ev_default_loop_ptr;
486
487 return !!(EV_A == ev_default_loop_ptr);
488#else
489 return 1;
433# endif 490#endif
491}
434 492
435void ev_default_destroy (void); /* destroy the default loop */ 493void ev_default_destroy (void); /* destroy the default loop */
436/* this needs to be called after fork, to duplicate the default loop */ 494/* this needs to be called after fork, to duplicate the default loop */
437/* if you create alternative loops you have to call ev_loop_fork on them */ 495/* if you create alternative loops you have to call ev_loop_fork on them */
438/* you can call it in either the parent or the child */ 496/* you can call it in either the parent or the child */
439/* you can actually call it at any time, anywhere :) */ 497/* you can actually call it at any time, anywhere :) */
440void ev_default_fork (void); 498void ev_default_fork (void);
441 499
442unsigned int ev_backend (EV_P); /* backend in use by loop */ 500unsigned int ev_backend (EV_P); /* backend in use by loop */
443unsigned int ev_loop_count (EV_P); /* number of loop iterations */ 501unsigned int ev_loop_count (EV_P); /* number of loop iterations */
502unsigned int ev_loop_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */
503void ev_loop_verify (EV_P); /* abort if loop data corrupted */
504
505#if EV_WALK_ENABLE
506/* walk (almost) all watchers in the loop of a given type, invoking the */
507/* callback on every such watcher. The callback might stop the watcher, */
508/* but do nothing else with the loop */
509void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
444#endif 510#endif
511
512#endif /* prototypes */
445 513
446#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 514#define EVLOOP_NONBLOCK 1 /* do not block/wait */
447#define EVLOOP_ONESHOT 2 /* block *once* only */ 515#define EVLOOP_ONESHOT 2 /* block *once* only */
448#define EVUNLOOP_CANCEL 0 /* undo unloop */ 516#define EVUNLOOP_CANCEL 0 /* undo unloop */
449#define EVUNLOOP_ONE 1 /* unloop once */ 517#define EVUNLOOP_ONE 1 /* unloop once */
… …
462 * should not keep ev_loop from running, unref() after starting, and ref() before stopping. 530 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
463 */ 531 */
464void ev_ref (EV_P); 532void ev_ref (EV_P);
465void ev_unref (EV_P); 533void ev_unref (EV_P);
466 534
535/*
536 * stop/start the timer handling.
537 */
538void ev_suspend (EV_P);
539void ev_resume (EV_P);
540
541/*
467/* convinience function, wait for a single event, without registering an event watcher */ 542 * convenience function, wait for a single event, without registering an event watcher
468/* if timeout is < 0, do wait indefinitely */ 543 * if timeout is < 0, do wait indefinitely
544 */
469void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 545void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
470#endif 546#endif
471 547
472/* these may evaluate ev multiple times, and the other arguments at most once */ 548/* these may evaluate ev multiple times, and the other arguments at most once */
473/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ 549/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
… …
476 ((ev_watcher *)(void *)(ev))->pending = \ 552 ((ev_watcher *)(void *)(ev))->pending = \
477 ((ev_watcher *)(void *)(ev))->priority = 0; \ 553 ((ev_watcher *)(void *)(ev))->priority = 0; \
478 ev_set_cb ((ev), cb_); \ 554 ev_set_cb ((ev), cb_); \
479} while (0) 555} while (0)
480 556
481#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0) 557#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
482#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 558#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
483#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) 559#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
484#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 560#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
485#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) 561#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
486#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) 562#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
487#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 563#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
488#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 564#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
489#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 565#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
490#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) 566#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
491#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ 567#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
492#define ev_async_set(ev) do { (ev)->gotasync = 0; } while (0) 568#define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
493 569
494#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 570#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
495#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 571#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
496#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) 572#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
497#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) 573#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
498#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) 574#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
499#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) 575#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
500#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 576#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
501#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 577#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
502#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 578#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
503#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) 579#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
504#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) 580#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
505#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) 581#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
506 582
507#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 583#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
508#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 584#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
509 585
510#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0) 586#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
511#define ev_cb(ev) (ev)->cb /* rw */ 587#define ev_cb(ev) (ev)->cb /* rw */
512#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri) 588#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
589
590#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
513 591
514#ifndef ev_set_cb 592#ifndef ev_set_cb
515# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 593# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
516#endif 594#endif
517 595
518/* stopping (enabling, adding) a watcher does nothing if it is already running */ 596/* stopping (enabling, adding) a watcher does nothing if it is already running */
519/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 597/* stopping (disabling, deleting) a watcher does nothing unless its already running */
520#if EV_PROTOTYPES 598#if EV_PROTOTYPES

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