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Comparing libev/ev.h (file contents):
Revision 1.34 by root, Sun Nov 4 23:29:48 2007 UTC vs.
Revision 1.111 by root, Mon Mar 16 21:15:06 2009 UTC

1/* 1/*
2 * libev native API header
3 *
2 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
3 * All rights reserved. 5 * All rights reserved.
4 * 6 *
5 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
6 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
7 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
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-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
8 * 27 *
9 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
10 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
11 * 30 * in which case the provisions of the GPL are applicable instead of
12 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
13 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
14 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
15 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
16 * 35 * and other provisions required by the GPL. If you do not delete the
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.
28 */ 38 */
29 39
30#ifndef EV_H 40#ifndef EV_H__
31#define EV_H 41#define EV_H__
32 42
33#ifdef __cplusplus 43#ifdef __cplusplus
34extern "C" { 44extern "C" {
35#endif 45#endif
36 46
… …
44# define EV_MAXPRI +2 54# define EV_MAXPRI +2
45#endif 55#endif
46 56
47#ifndef EV_MULTIPLICITY 57#ifndef EV_MULTIPLICITY
48# define EV_MULTIPLICITY 1 58# define EV_MULTIPLICITY 1
59#endif
60
61#ifndef EV_PERIODIC_ENABLE
62# define EV_PERIODIC_ENABLE 1
63#endif
64
65#ifndef EV_STAT_ENABLE
66# define EV_STAT_ENABLE 1
67#endif
68
69#ifndef EV_IDLE_ENABLE
70# define EV_IDLE_ENABLE 1
71#endif
72
73#ifndef EV_FORK_ENABLE
74# define EV_FORK_ENABLE 1
75#endif
76
77#ifndef EV_EMBED_ENABLE
78# define EV_EMBED_ENABLE 1
79#endif
80
81#ifndef EV_ASYNC_ENABLE
82# define EV_ASYNC_ENABLE 1
83#endif
84
85#ifndef EV_ATOMIC_T
86# include <signal.h>
87# define EV_ATOMIC_T sig_atomic_t volatile
88#endif
89
90/*****************************************************************************/
91
92#if EV_STAT_ENABLE
93# ifdef _WIN32
94# include <time.h>
95# include <sys/types.h>
96# endif
97# include <sys/stat.h>
49#endif 98#endif
50 99
51/* support multiple event loops? */ 100/* support multiple event loops? */
52#if EV_MULTIPLICITY 101#if EV_MULTIPLICITY
53struct ev_loop; 102struct ev_loop;
54# define EV_P struct ev_loop *loop 103# define EV_P struct ev_loop *loop
55# define EV_P_ EV_P, 104# define EV_P_ EV_P,
56# define EV_A loop 105# define EV_A loop
57# define EV_A_ EV_A, 106# define EV_A_ EV_A,
107# define EV_DEFAULT_UC ev_default_loop_uc ()
108# define EV_DEFAULT_UC_ EV_DEFAULT_UC,
109# define EV_DEFAULT ev_default_loop (0)
110# define EV_DEFAULT_ EV_DEFAULT,
58#else 111#else
59# define EV_P void 112# define EV_P void
60# define EV_P_ 113# define EV_P_
61# define EV_A 114# define EV_A
62# define EV_A_ 115# define EV_A_
116# define EV_DEFAULT
117# define EV_DEFAULT_
118# define EV_DEFAULT_UC
119# define EV_DEFAULT_UC_
120# undef EV_EMBED_ENABLE
63#endif 121#endif
122
123#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
124# define EV_INLINE static inline
125#else
126# define EV_INLINE static
127#endif
128
129/*****************************************************************************/
64 130
65/* eventmask, revents, events... */ 131/* eventmask, revents, events... */
66#define EV_UNDEF -1 /* guaranteed to be invalid */ 132#define EV_UNDEF -1 /* guaranteed to be invalid */
67#define EV_NONE 0x00 133#define EV_NONE 0x00 /* no events */
68#define EV_READ 0x01 134#define EV_READ 0x01 /* ev_io detected read will not block */
69#define EV_WRITE 0x02 135#define EV_WRITE 0x02 /* ev_io detected write will not block */
70#define EV_TIMEOUT 0x000100 136#define EV__IOFDSET 0x80 /* internal use only */
71#define EV_PERIODIC 0x000200 137#define EV_IO EV_READ /* alias for type-detection */
72#define EV_SIGNAL 0x000400 138#define EV_TIMEOUT 0x00000100 /* timer timed out */
73#define EV_IDLE 0x000800 139#define EV_PERIODIC 0x00000200 /* periodic timer timed out */
74#define EV_CHECK 0x001000 140#define EV_SIGNAL 0x00000400 /* signal was received */
75#define EV_PREPARE 0x002000 141#define EV_CHILD 0x00000800 /* child/pid had status change */
76#define EV_CHILD 0x004000 142#define EV_STAT 0x00001000 /* stat data changed */
143#define EV_IDLE 0x00002000 /* event loop is idling */
144#define EV_PREPARE 0x00004000 /* event loop about to poll */
145#define EV_CHECK 0x00008000 /* event loop finished poll */
146#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
147#define EV_FORK 0x00020000 /* event loop resumed in child */
148#define EV_ASYNC 0x00040000 /* async intra-loop signal */
77#define EV_ERROR 0x800000 /* sent when an error occurs */ 149#define EV_ERROR 0x80000000 /* sent when an error occurs */
78 150
79/* can be used to add custom fields to all watchers */ 151/* can be used to add custom fields to all watchers, while losing binary compatibility */
80#ifndef EV_COMMON 152#ifndef EV_COMMON
81# define EV_COMMON void *data 153# define EV_COMMON void *data;
82#endif 154#endif
83#ifndef EV_PROTOTYPES 155#ifndef EV_PROTOTYPES
84# define EV_PROTOTYPES 1 156# define EV_PROTOTYPES 1
85#endif 157#endif
86 158
87#define EV_VERSION_MAJOR 1 159#define EV_VERSION_MAJOR 3
88#define EV_VERSION_MINOR 1 160#define EV_VERSION_MINOR 0
161
162#ifndef EV_CB_DECLARE
163# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
164#endif
165#ifndef EV_CB_INVOKE
166# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
167#endif
89 168
90/* 169/*
91 * struct member types: 170 * struct member types:
92 * private: you can look at them, but not change them, and they might not mean anything to you. 171 * private: you may look at them, but not change them,
172 * and they might not mean anything to you.
93 * ro: can be read anytime, but only changed when the watcher isn't active 173 * ro: can be read anytime, but only changed when the watcher isn't active.
94 * rw: can be read and modified anytime, even when the watcher is active 174 * rw: can be read and modified anytime, even when the watcher is active.
175 *
176 * some internal details that might be helpful for debugging:
177 *
178 * active is either 0, which means the watcher is not active,
179 * or the array index of the watcher (periodics, timers)
180 * or the array index + 1 (most other watchers)
181 * or simply 1 for watchers that aren't in some array.
182 * pending is either 0, in which case the watcher isn't,
183 * or the array index + 1 in the pendings array.
95 */ 184 */
96 185
97/* shared by all watchers */ 186/* shared by all watchers */
98#define EV_WATCHER(type) \ 187#define EV_WATCHER(type) \
99 int active; /* private */ \ 188 int active; /* private */ \
100 int pending; /* private */ \ 189 int pending; /* private */ \
101 int priority; /* private */ \ 190 int priority; /* private */ \
102 EV_COMMON; /* rw */ \ 191 EV_COMMON /* rw */ \
103 void (*cb)(EV_P_ struct type *, int revents); /* private */ /* gets invoked with an eventmask */ 192 EV_CB_DECLARE (type) /* private */
104 193
105#define EV_WATCHER_LIST(type) \ 194#define EV_WATCHER_LIST(type) \
106 EV_WATCHER (type); \ 195 EV_WATCHER (type) \
107 struct ev_watcher_list *next /* private */ 196 struct ev_watcher_list *next; /* private */
108 197
109#define EV_WATCHER_TIME(type) \ 198#define EV_WATCHER_TIME(type) \
110 EV_WATCHER (type); \ 199 EV_WATCHER (type) \
111 ev_tstamp at /* private */ 200 ev_tstamp at; /* private */
112 201
113/* base class, nothing to see here unless you subclass */ 202/* base class, nothing to see here unless you subclass */
114struct ev_watcher { 203typedef struct ev_watcher
204{
115 EV_WATCHER (ev_watcher); 205 EV_WATCHER (ev_watcher)
116}; 206} ev_watcher;
117 207
118/* base class, nothing to see here unless you subclass */ 208/* base class, nothing to see here unless you subclass */
119struct ev_watcher_list { 209typedef struct ev_watcher_list
210{
120 EV_WATCHER_LIST (ev_watcher_list); 211 EV_WATCHER_LIST (ev_watcher_list)
121}; 212} ev_watcher_list;
122 213
123/* base class, nothing to see here unless you subclass */ 214/* base class, nothing to see here unless you subclass */
124struct ev_watcher_time { 215typedef struct ev_watcher_time
216{
125 EV_WATCHER_TIME (ev_watcher_time); 217 EV_WATCHER_TIME (ev_watcher_time)
126}; 218} ev_watcher_time;
219
220/* invoked when fd is either EV_READable or EV_WRITEable */
221/* revent EV_READ, EV_WRITE */
222typedef struct ev_io
223{
224 EV_WATCHER_LIST (ev_io)
225
226 int fd; /* ro */
227 int events; /* ro */
228} ev_io;
127 229
128/* invoked after a specific time, repeatable (based on monotonic clock) */ 230/* invoked after a specific time, repeatable (based on monotonic clock) */
129/* revent EV_TIMEOUT */ 231/* revent EV_TIMEOUT */
130struct ev_timer 232typedef struct ev_timer
131{ 233{
132 EV_WATCHER_TIME (ev_timer); 234 EV_WATCHER_TIME (ev_timer)
133 235
134 ev_tstamp repeat; /* rw */ 236 ev_tstamp repeat; /* rw */
135}; 237} ev_timer;
136 238
137/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 239/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
138/* revent EV_PERIODIC */ 240/* revent EV_PERIODIC */
139struct ev_periodic 241typedef struct ev_periodic
140{ 242{
141 EV_WATCHER_TIME (ev_periodic); 243 EV_WATCHER_TIME (ev_periodic)
142 244
245 ev_tstamp offset; /* rw */
143 ev_tstamp interval; /* rw */ 246 ev_tstamp interval; /* rw */
144}; 247 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
145 248} ev_periodic;
146/* invoked when fd is either EV_READable or EV_WRITEable */
147/* revent EV_READ, EV_WRITE */
148struct ev_io
149{
150 EV_WATCHER_LIST (ev_io);
151
152 int fd; /* ro */
153 int events; /* ro */
154};
155 249
156/* invoked when the given signal has been received */ 250/* invoked when the given signal has been received */
157/* revent EV_SIGNAL */ 251/* revent EV_SIGNAL */
158struct ev_signal 252typedef struct ev_signal
159{ 253{
160 EV_WATCHER_LIST (ev_signal); 254 EV_WATCHER_LIST (ev_signal)
161#if EV_MULTIPLICITY
162 struct ev_loop *loop;
163#endif
164 255
165 int signum; /* ro */ 256 int signum; /* ro */
166}; 257} ev_signal;
167 258
259/* invoked when sigchld is received and waitpid indicates the given pid */
260/* revent EV_CHILD */
261/* does not support priorities */
262typedef struct ev_child
263{
264 EV_WATCHER_LIST (ev_child)
265
266 int flags; /* private */
267 int pid; /* ro */
268 int rpid; /* rw, holds the received pid */
269 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
270} ev_child;
271
272#if EV_STAT_ENABLE
273/* st_nlink = 0 means missing file or other error */
274# ifdef _WIN32
275typedef struct _stati64 ev_statdata;
276# else
277typedef struct stat ev_statdata;
278# endif
279
280/* invoked each time the stat data changes for a given path */
281/* revent EV_STAT */
282typedef struct ev_stat
283{
284 EV_WATCHER_LIST (ev_stat)
285
286 ev_timer timer; /* private */
287 ev_tstamp interval; /* ro */
288 const char *path; /* ro */
289 ev_statdata prev; /* ro */
290 ev_statdata attr; /* ro */
291
292 int wd; /* wd for inotify, fd for kqueue */
293} ev_stat;
294#endif
295
296#if EV_IDLE_ENABLE
168/* invoked when the nothing else needs to be done, keeps the process from blocking */ 297/* invoked when the nothing else needs to be done, keeps the process from blocking */
169/* revent EV_IDLE */ 298/* revent EV_IDLE */
170struct ev_idle 299typedef struct ev_idle
171{ 300{
172 EV_WATCHER (ev_idle); 301 EV_WATCHER (ev_idle)
173}; 302} ev_idle;
303#endif
174 304
175/* invoked for each run of the mainloop, just before the blocking call */ 305/* invoked for each run of the mainloop, just before the blocking call */
176/* you can still change events in any way you like */ 306/* you can still change events in any way you like */
177/* revent EV_PREPARE */ 307/* revent EV_PREPARE */
178struct ev_prepare 308typedef struct ev_prepare
179{ 309{
180 EV_WATCHER (ev_prepare); 310 EV_WATCHER (ev_prepare)
181}; 311} ev_prepare;
182 312
183/* invoked for each run of the mainloop, just after the blocking call */ 313/* invoked for each run of the mainloop, just after the blocking call */
184/* revent EV_CHECK */ 314/* revent EV_CHECK */
185struct ev_check 315typedef struct ev_check
186{ 316{
187 EV_WATCHER (ev_check); 317 EV_WATCHER (ev_check)
318} ev_check;
319
320#if EV_FORK_ENABLE
321/* the callback gets invoked before check in the child process when a fork was detected */
322typedef struct ev_fork
323{
324 EV_WATCHER (ev_fork)
325} ev_fork;
326#endif
327
328#if EV_EMBED_ENABLE
329/* used to embed an event loop inside another */
330/* the callback gets invoked when the event loop has handled events, and can be 0 */
331typedef struct ev_embed
332{
333 EV_WATCHER (ev_embed)
334
335 struct ev_loop *other; /* ro */
336 ev_io io; /* private */
337 ev_prepare prepare; /* private */
338 ev_check check; /* unused */
339 ev_timer timer; /* unused */
340 ev_periodic periodic; /* unused */
341 ev_idle idle; /* unused */
342 ev_fork fork; /* private */
343} ev_embed;
344#endif
345
346#if EV_ASYNC_ENABLE
347/* invoked when somebody calls ev_async_send on the watcher */
348/* revent EV_ASYNC */
349typedef struct ev_async
350{
351 EV_WATCHER (ev_async)
352
353 EV_ATOMIC_T sent; /* private */
354} ev_async;
355
356# define ev_async_pending(w) ((w)->sent + 0)
357#endif
358
359/* the presence of this union forces similar struct layout */
360union ev_any_watcher
361{
362 struct ev_watcher w;
363 struct ev_watcher_list wl;
364
365 struct ev_io io;
366 struct ev_timer timer;
367 struct ev_periodic periodic;
368 struct ev_signal signal;
369 struct ev_child child;
370#if EV_STAT_ENABLE
371 struct ev_stat stat;
372#endif
373#if EV_IDLE_ENABLE
374 struct ev_idle idle;
375#endif
376 struct ev_prepare prepare;
377 struct ev_check check;
378#if EV_FORK_ENABLE
379 struct ev_fork fork;
380#endif
381#if EV_EMBED_ENABLE
382 struct ev_embed embed;
383#endif
384#if EV_ASYNC_ENABLE
385 struct ev_async async;
386#endif
188}; 387};
189 388
190/* invoked when sigchld is received and waitpid indicates the givne pid */ 389/* bits for ev_default_loop and ev_loop_new */
191/* revent EV_CHILD */ 390/* the default */
192/* does not support priorities */ 391#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
193struct ev_child 392/* flag bits */
194{ 393#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
195 EV_WATCHER_LIST (ev_child); 394#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
196 395/* method bits to be ored together */
197 int pid; /* ro */ 396#define EVBACKEND_SELECT 0x00000001U /* about anywhere */
198 int rpid; /* rw, holds the received pid */ 397#define EVBACKEND_POLL 0x00000002U /* !win */
199 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ 398#define EVBACKEND_EPOLL 0x00000004U /* linux */
200}; 399#define EVBACKEND_KQUEUE 0x00000008U /* bsd */
201 400#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
202#define EVMETHOD_AUTO 0 /* consults environment */ 401#define EVBACKEND_PORT 0x00000020U /* solaris 10 */
203#define EVMETHOD_SELECT 1
204#define EVMETHOD_POLL 2
205#define EVMETHOD_EPOLL 4
206#define EVMETHOD_KQUEUE 8
207#define EVMETHOD_DEVPOLL 16 /* NYI */
208#define EVMETHOD_PORT 32 /* NYI */
209#define EVMETHOD_WIN32 64 /* NYI */
210#define EVMETHOD_ANY ~0 /* any method, do not consult env */
211 402
212#if EV_PROTOTYPES 403#if EV_PROTOTYPES
213int ev_version_major (void); 404int ev_version_major (void);
214int ev_version_minor (void); 405int ev_version_minor (void);
215 406
407unsigned int ev_supported_backends (void);
408unsigned int ev_recommended_backends (void);
409unsigned int ev_embeddable_backends (void);
410
216ev_tstamp ev_time (void); 411ev_tstamp ev_time (void);
412void ev_sleep (ev_tstamp delay); /* sleep for a while */
217 413
414/* Sets the allocation function to use, works like realloc.
415 * It is used to allocate and free memory.
416 * If it returns zero when memory needs to be allocated, the library might abort
417 * or take some potentially destructive action.
418 * The default is your system realloc function.
419 */
420void ev_set_allocator (void *(*cb)(void *ptr, long size));
421
422/* set the callback function to call on a
423 * retryable syscall error
424 * (such as failed select, poll, epoll_wait)
425 */
426void ev_set_syserr_cb (void (*cb)(const char *msg));
427
218# if EV_MULTIPLICITY 428#if EV_MULTIPLICITY
429EV_INLINE struct ev_loop *
430ev_default_loop_uc (void)
431{
432 extern struct ev_loop *ev_default_loop_ptr;
433
434 return ev_default_loop_ptr;
435}
436
219/* the default loop is the only one that handles signals and child watchers */ 437/* the default loop is the only one that handles signals and child watchers */
220/* you can call this as often as you like */ 438/* you can call this as often as you like */
221struct ev_loop *ev_default_loop (int methods); /* returns default loop */ 439EV_INLINE struct ev_loop *
440ev_default_loop (unsigned int flags)
441{
442 struct ev_loop *loop = ev_default_loop_uc ();
443
444 if (!loop)
445 {
446 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
447
448 loop = ev_default_loop_init (flags);
449 }
450
451 return loop;
452}
222 453
223/* create and destroy alternative loops that don't handle signals */ 454/* create and destroy alternative loops that don't handle signals */
224struct ev_loop *ev_loop_new (int methods); 455struct ev_loop *ev_loop_new (unsigned int flags);
225void ev_loop_destroy (EV_P); 456void ev_loop_destroy (EV_P);
226void ev_loop_fork (EV_P); 457void ev_loop_fork (EV_P);
458void ev_loop_verify (EV_P);
459
460ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
461void ev_now_update (EV_P);
462
227# else 463#else
464
228int ev_default_loop (int methods); /* returns true when successful */ 465int ev_default_loop (unsigned int flags); /* returns true when successful */
466
467EV_INLINE ev_tstamp
468ev_now (void)
469{
470 extern ev_tstamp ev_rt_now;
471
472 return ev_rt_now;
473}
474#endif /* multiplicity */
475
476EV_INLINE int
477ev_is_default_loop (EV_P)
478{
479#if EV_MULTIPLICITY
480 extern struct ev_loop *ev_default_loop_ptr;
481
482 return !!(EV_A == ev_default_loop_ptr);
483#else
484 return 1;
229# endif 485#endif
486}
230 487
231void ev_default_destroy (void); /* destroy the default loop */ 488void ev_default_destroy (void); /* destroy the default loop */
232/* this needs to be called after fork, to duplicate the default loop */ 489/* this needs to be called after fork, to duplicate the default loop */
233/* if you create alternative loops you have to call ev_loop_fork on them */ 490/* if you create alternative loops you have to call ev_loop_fork on them */
234/* you can call it in either the parent or the child */ 491/* you can call it in either the parent or the child */
235/* you can actually call it at any time, anywhere :) */ 492/* you can actually call it at any time, anywhere :) */
236void ev_default_fork (void); 493void ev_default_fork (void);
237 494
238int ev_method (EV_P); 495unsigned int ev_backend (EV_P); /* backend in use by loop */
239#endif 496unsigned int ev_loop_count (EV_P); /* number of loop iterations */
497#endif /* prototypes */
240 498
241#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 499#define EVLOOP_NONBLOCK 1 /* do not block/wait */
242#define EVLOOP_ONESHOT 2 /* block *once* only */ 500#define EVLOOP_ONESHOT 2 /* block *once* only */
501#define EVUNLOOP_CANCEL 0 /* undo unloop */
243#define EVUNLOOP_ONCE 1 /* unloop once */ 502#define EVUNLOOP_ONE 1 /* unloop once */
244#define EVUNLOOP_ALL 2 /* unloop all loops */ 503#define EVUNLOOP_ALL 2 /* unloop all loops */
245 504
246#if EV_PROTOTYPES 505#if EV_PROTOTYPES
247void ev_loop (EV_P_ int flags); 506void ev_loop (EV_P_ int flags);
248void 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 */ 507void 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 */
249 508
250ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 509void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
510void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
251 511
252/* 512/*
253 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher 513 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
254 * keeps one reference. if you have a long-runing watcher you never unregister that 514 * keeps one reference. if you have a long-runing watcher you never unregister that
255 * should not keep ev_loop from running, unref() after starting, and ref() before stopping. 515 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
256 */ 516 */
257void ev_ref (EV_P); 517void ev_ref (EV_P);
258void ev_unref (EV_P); 518void ev_unref (EV_P);
259 519
260/* convinience function, wait for a single event, without registering an event watcher */ 520/* convenience function, wait for a single event, without registering an event watcher */
261/* if timeout is < 0, do wait indefinitely */ 521/* if timeout is < 0, do wait indefinitely */
262void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 522void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
263#endif 523#endif
264 524
265/* these may evaluate ev multiple times, and the other arguments at most once */ 525/* these may evaluate ev multiple times, and the other arguments at most once */
266/* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ 526/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
267#define ev_watcher_init(ev,cb_) do { \ 527#define ev_init(ev,cb_) do { \
268 ((struct ev_watcher *)(void *)(ev))->active = \ 528 ((ev_watcher *)(void *)(ev))->active = \
269 ((struct ev_watcher *)(void *)(ev))->pending = \ 529 ((ev_watcher *)(void *)(ev))->pending = \
270 ((struct ev_watcher *)(void *)(ev))->priority = 0; \ 530 ((ev_watcher *)(void *)(ev))->priority = 0; \
271 (ev)->cb = (cb_); \ 531 ev_set_cb ((ev), cb_); \
272} while (0) 532} while (0)
273 533
274#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 534#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
275#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 535#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
276#define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) 536#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
277#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 537#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
538#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
539#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
278#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 540#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
279#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 541#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
280#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 542#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
281#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) 543#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
544#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
545#define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
282 546
283#define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 547#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
284#define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 548#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
285#define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0) 549#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
286#define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) 550#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
551#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
552#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
287#define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 553#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
288#define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 554#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
289#define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 555#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
556#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
557#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
290#define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) 558#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
291 559
292#define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 560#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
293#define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 561#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
294 562
295#define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ 563#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
296#define ev_cb(ev) (ev)->cb /* rw */ 564#define ev_cb(ev) (ev)->cb /* rw */
297#define ev_set_priority(ev,pri) ev_priority (ev) = (pri) 565#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
566
567#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
568
569#ifndef ev_set_cb
298#define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 570# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
571#endif
299 572
300/* stopping (enabling, adding) a watcher does nothing if it is already running */ 573/* stopping (enabling, adding) a watcher does nothing if it is already running */
301/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 574/* stopping (disabling, deleting) a watcher does nothing unless its already running */
302#if EV_PROTOTYPES 575#if EV_PROTOTYPES
576
577/* feeds an event into a watcher as if the event actually occured */
578/* accepts any ev_watcher type */
579void ev_feed_event (EV_P_ void *w, int revents);
580void ev_feed_fd_event (EV_P_ int fd, int revents);
581void ev_feed_signal_event (EV_P_ int signum);
582void ev_invoke (EV_P_ void *w, int revents);
583int ev_clear_pending (EV_P_ void *w);
584
303void ev_io_start (EV_P_ struct ev_io *w); 585void ev_io_start (EV_P_ ev_io *w);
304void ev_io_stop (EV_P_ struct ev_io *w); 586void ev_io_stop (EV_P_ ev_io *w);
305 587
306void ev_timer_start (EV_P_ struct ev_timer *w); 588void ev_timer_start (EV_P_ ev_timer *w);
307void ev_timer_stop (EV_P_ struct ev_timer *w); 589void ev_timer_stop (EV_P_ ev_timer *w);
308/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 590/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
309void ev_timer_again (EV_P_ struct ev_timer *w); 591void ev_timer_again (EV_P_ ev_timer *w);
310 592
593#if EV_PERIODIC_ENABLE
311void ev_periodic_start (EV_P_ struct ev_periodic *w); 594void ev_periodic_start (EV_P_ ev_periodic *w);
312void ev_periodic_stop (EV_P_ struct ev_periodic *w); 595void ev_periodic_stop (EV_P_ ev_periodic *w);
313 596void ev_periodic_again (EV_P_ ev_periodic *w);
314void ev_idle_start (EV_P_ struct ev_idle *w); 597#endif
315void ev_idle_stop (EV_P_ struct ev_idle *w);
316
317void ev_prepare_start (EV_P_ struct ev_prepare *w);
318void ev_prepare_stop (EV_P_ struct ev_prepare *w);
319
320void ev_check_start (EV_P_ struct ev_check *w);
321void ev_check_stop (EV_P_ struct ev_check *w);
322 598
323/* only supported in the default loop */ 599/* only supported in the default loop */
324void ev_signal_start (EV_P_ struct ev_signal *w); 600void ev_signal_start (EV_P_ ev_signal *w);
325void ev_signal_stop (EV_P_ struct ev_signal *w); 601void ev_signal_stop (EV_P_ ev_signal *w);
326 602
327/* only supported in the default loop */ 603/* only supported in the default loop */
328void ev_child_start (EV_P_ struct ev_child *w); 604void ev_child_start (EV_P_ ev_child *w);
329void ev_child_stop (EV_P_ struct ev_child *w); 605void ev_child_stop (EV_P_ ev_child *w);
606
607# if EV_STAT_ENABLE
608void ev_stat_start (EV_P_ ev_stat *w);
609void ev_stat_stop (EV_P_ ev_stat *w);
610void ev_stat_stat (EV_P_ ev_stat *w);
611# endif
612
613# if EV_IDLE_ENABLE
614void ev_idle_start (EV_P_ ev_idle *w);
615void ev_idle_stop (EV_P_ ev_idle *w);
616# endif
617
618void ev_prepare_start (EV_P_ ev_prepare *w);
619void ev_prepare_stop (EV_P_ ev_prepare *w);
620
621void ev_check_start (EV_P_ ev_check *w);
622void ev_check_stop (EV_P_ ev_check *w);
623
624# if EV_FORK_ENABLE
625void ev_fork_start (EV_P_ ev_fork *w);
626void ev_fork_stop (EV_P_ ev_fork *w);
627# endif
628
629# if EV_EMBED_ENABLE
630/* only supported when loop to be embedded is in fact embeddable */
631void ev_embed_start (EV_P_ ev_embed *w);
632void ev_embed_stop (EV_P_ ev_embed *w);
633void ev_embed_sweep (EV_P_ ev_embed *w);
634# endif
635
636# if EV_ASYNC_ENABLE
637void ev_async_start (EV_P_ ev_async *w);
638void ev_async_stop (EV_P_ ev_async *w);
639void ev_async_send (EV_P_ ev_async *w);
640# endif
641
330#endif 642#endif
331 643
332#ifdef __cplusplus 644#ifdef __cplusplus
333} 645}
334#endif 646#endif

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