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Comparing libev/ev.h (file contents):
Revision 1.67 by root, Sat Nov 24 07:14:49 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
… …
46 56
47#ifndef EV_MULTIPLICITY 57#ifndef EV_MULTIPLICITY
48# define EV_MULTIPLICITY 1 58# define EV_MULTIPLICITY 1
49#endif 59#endif
50 60
51#ifndef EV_PERIODICS 61#ifndef EV_PERIODIC_ENABLE
52# define EV_PERIODICS 1 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>
53#endif 98#endif
54 99
55/* support multiple event loops? */ 100/* support multiple event loops? */
56#if EV_MULTIPLICITY 101#if EV_MULTIPLICITY
57struct ev_loop; 102struct ev_loop;
58# define EV_P struct ev_loop *loop 103# define EV_P struct ev_loop *loop
59# define EV_P_ EV_P, 104# define EV_P_ EV_P,
60# define EV_A loop 105# define EV_A loop
61# 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,
62# define EV_DEFAULT_A ev_default_loop (0) 109# define EV_DEFAULT ev_default_loop (0)
63# define EV_DEFAULT_A_ EV_DEFAULT_A, 110# define EV_DEFAULT_ EV_DEFAULT,
64#else 111#else
65# define EV_P void 112# define EV_P void
66# define EV_P_ 113# define EV_P_
67# define EV_A 114# define EV_A
68# define EV_A_ 115# define EV_A_
116# define EV_DEFAULT
69# define EV_DEFAULT_A 117# define EV_DEFAULT_
118# define EV_DEFAULT_UC
70# define EV_DEFAULT_A_ 119# define EV_DEFAULT_UC_
120# undef EV_EMBED_ENABLE
71#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/*****************************************************************************/
72 130
73/* eventmask, revents, events... */ 131/* eventmask, revents, events... */
74#define EV_UNDEF -1L /* guaranteed to be invalid */ 132#define EV_UNDEF -1 /* guaranteed to be invalid */
75#define EV_NONE 0x00L
76#define EV_READ 0x01L /* io only */ 133#define EV_NONE 0x00 /* no events */
77#define EV_WRITE 0x02L /* io only */ 134#define EV_READ 0x01 /* ev_io detected read will not block */
135#define EV_WRITE 0x02 /* ev_io detected write will not block */
136#define EV__IOFDSET 0x80 /* internal use only */
137#define EV_IO EV_READ /* alias for type-detection */
78#define EV_TIMEOUT 0x000100L /* timer only */ 138#define EV_TIMEOUT 0x00000100 /* timer timed out */
79#define EV_PERIODIC 0x000200L /* periodic timer only */ 139#define EV_PERIODIC 0x00000200 /* periodic timer timed out */
80#define EV_SIGNAL 0x000400L /* signal only */ 140#define EV_SIGNAL 0x00000400 /* signal was received */
81#define EV_IDLE 0x000800L /* idle only */
82#define EV_CHECK 0x001000L /* check only */
83#define EV_PREPARE 0x002000L /* prepare only */
84#define EV_CHILD 0x004000L /* child/pid only */ 141#define EV_CHILD 0x00000800 /* child/pid had status change */
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 */
85#define EV_EMBED 0x008000L /* embedded event loop */ 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 */
86#define EV_ERROR 0x800000L /* sent when an error occurs */ 149#define EV_ERROR 0x80000000 /* sent when an error occurs */
87 150
88/* can be used to add custom fields to all watchers, while losing binary compatibility */ 151/* can be used to add custom fields to all watchers, while losing binary compatibility */
89#ifndef EV_COMMON 152#ifndef EV_COMMON
90# define EV_COMMON void *data; 153# define EV_COMMON void *data;
91#endif 154#endif
92#ifndef EV_PROTOTYPES 155#ifndef EV_PROTOTYPES
93# define EV_PROTOTYPES 1 156# define EV_PROTOTYPES 1
94#endif 157#endif
95 158
96#define EV_VERSION_MAJOR 1 159#define EV_VERSION_MAJOR 3
97#define EV_VERSION_MINOR 1 160#define EV_VERSION_MINOR 0
98 161
99#ifndef EV_CB_DECLARE 162#ifndef EV_CB_DECLARE
100# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); 163# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
101#endif 164#endif
102#ifndef EV_CB_INVOKE 165#ifndef EV_CB_INVOKE
103# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) 166# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
104#endif 167#endif
105 168
106/* 169/*
107 * struct member types: 170 * struct member types:
108 * 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.
109 * 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.
110 * 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.
111 */ 184 */
112 185
113/* shared by all watchers */ 186/* shared by all watchers */
114#define EV_WATCHER(type) \ 187#define EV_WATCHER(type) \
115 int active; /* private */ \ 188 int active; /* private */ \
… …
142typedef struct ev_watcher_time 215typedef struct ev_watcher_time
143{ 216{
144 EV_WATCHER_TIME (ev_watcher_time) 217 EV_WATCHER_TIME (ev_watcher_time)
145} ev_watcher_time; 218} ev_watcher_time;
146 219
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;
229
147/* invoked after a specific time, repeatable (based on monotonic clock) */ 230/* invoked after a specific time, repeatable (based on monotonic clock) */
148/* revent EV_TIMEOUT */ 231/* revent EV_TIMEOUT */
149typedef struct ev_timer 232typedef struct ev_timer
150{ 233{
151 EV_WATCHER_TIME (ev_timer) 234 EV_WATCHER_TIME (ev_timer)
… …
157/* revent EV_PERIODIC */ 240/* revent EV_PERIODIC */
158typedef struct ev_periodic 241typedef struct ev_periodic
159{ 242{
160 EV_WATCHER_TIME (ev_periodic) 243 EV_WATCHER_TIME (ev_periodic)
161 244
245 ev_tstamp offset; /* rw */
162 ev_tstamp interval; /* rw */ 246 ev_tstamp interval; /* rw */
163 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ 247 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
164} ev_periodic; 248} ev_periodic;
165 249
166/* invoked when fd is either EV_READable or EV_WRITEable */
167/* revent EV_READ, EV_WRITE */
168typedef struct ev_io
169{
170 EV_WATCHER_LIST (ev_io)
171
172 int fd; /* ro */
173 int events; /* ro */
174} ev_io;
175
176/* invoked when the given signal has been received */ 250/* invoked when the given signal has been received */
177/* revent EV_SIGNAL */ 251/* revent EV_SIGNAL */
178typedef struct ev_signal 252typedef struct ev_signal
179{ 253{
180 EV_WATCHER_LIST (ev_signal) 254 EV_WATCHER_LIST (ev_signal)
181 255
182 int signum; /* ro */ 256 int signum; /* ro */
183} ev_signal; 257} ev_signal;
184 258
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
185/* 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 */
186/* revent EV_IDLE */ 298/* revent EV_IDLE */
187typedef struct ev_idle 299typedef struct ev_idle
188{ 300{
189 EV_WATCHER (ev_idle) 301 EV_WATCHER (ev_idle)
190} ev_idle; 302} ev_idle;
303#endif
191 304
192/* 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 */
193/* you can still change events in any way you like */ 306/* you can still change events in any way you like */
194/* revent EV_PREPARE */ 307/* revent EV_PREPARE */
195typedef struct ev_prepare 308typedef struct ev_prepare
… …
202typedef struct ev_check 315typedef struct ev_check
203{ 316{
204 EV_WATCHER (ev_check) 317 EV_WATCHER (ev_check)
205} ev_check; 318} ev_check;
206 319
207/* invoked when sigchld is received and waitpid indicates the given pid */ 320#if EV_FORK_ENABLE
208/* revent EV_CHILD */ 321/* the callback gets invoked before check in the child process when a fork was detected */
209/* does not support priorities */
210typedef struct ev_child 322typedef struct ev_fork
211{ 323{
212 EV_WATCHER_LIST (ev_child) 324 EV_WATCHER (ev_fork)
325} ev_fork;
326#endif
213 327
214 int pid; /* ro */ 328#if EV_EMBED_ENABLE
215 int rpid; /* rw, holds the received pid */
216 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
217} ev_child;
218
219#if EV_MULTIPLICITY
220/* used to embed an event loop inside another */ 329/* used to embed an event loop inside another */
221/* the callback gets invoked when the event loop has handled events, and can be 0 */ 330/* the callback gets invoked when the event loop has handled events, and can be 0 */
222typedef struct ev_embed 331typedef struct ev_embed
223{ 332{
224 EV_WATCHER (ev_embed) 333 EV_WATCHER (ev_embed)
225 334
226 ev_io io; /* private */
227 struct ev_loop *loop; /* ro */ 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 */
228} ev_embed; 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)
229#endif 357#endif
230 358
231/* the presence of this union forces similar struct layout */ 359/* the presence of this union forces similar struct layout */
232union ev_any_watcher 360union ev_any_watcher
233{ 361{
… …
235 struct ev_watcher_list wl; 363 struct ev_watcher_list wl;
236 364
237 struct ev_io io; 365 struct ev_io io;
238 struct ev_timer timer; 366 struct ev_timer timer;
239 struct ev_periodic periodic; 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
240 struct ev_idle idle; 374 struct ev_idle idle;
375#endif
241 struct ev_prepare prepare; 376 struct ev_prepare prepare;
242 struct ev_check check; 377 struct ev_check check;
243 struct ev_signal signal; 378#if EV_FORK_ENABLE
244 struct ev_child child; 379 struct ev_fork fork;
245#if EV_MULTIPLICITY 380#endif
381#if EV_EMBED_ENABLE
246 struct ev_embed embed; 382 struct ev_embed embed;
383#endif
384#if EV_ASYNC_ENABLE
385 struct ev_async async;
247#endif 386#endif
248}; 387};
249 388
250/* bits for ev_default_loop and ev_loop_new */ 389/* bits for ev_default_loop and ev_loop_new */
251/* the default */ 390/* the default */
252#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ 391#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
253/* flag bits */ 392/* flag bits */
254#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ 393#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
394#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
255/* method bits to be ored together */ 395/* method bits to be ored together */
256#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ 396#define EVBACKEND_SELECT 0x00000001U /* about anywhere */
257#define EVBACKEND_POLL 0x00000002UL /* !win */ 397#define EVBACKEND_POLL 0x00000002U /* !win */
258#define EVBACKEND_EPOLL 0x00000004UL /* linux */ 398#define EVBACKEND_EPOLL 0x00000004U /* linux */
259#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ 399#define EVBACKEND_KQUEUE 0x00000008U /* bsd */
260#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ 400#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
261#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ 401#define EVBACKEND_PORT 0x00000020U /* solaris 10 */
262 402
263#if EV_PROTOTYPES 403#if EV_PROTOTYPES
264int ev_version_major (void); 404int ev_version_major (void);
265int ev_version_minor (void); 405int ev_version_minor (void);
266 406
267unsigned int ev_supported_backends (void); 407unsigned int ev_supported_backends (void);
268unsigned int ev_recommended_backends (void); 408unsigned int ev_recommended_backends (void);
269unsigned int ev_embeddable_backends (void); 409unsigned int ev_embeddable_backends (void);
270 410
271ev_tstamp ev_time (void); 411ev_tstamp ev_time (void);
412void ev_sleep (ev_tstamp delay); /* sleep for a while */
272 413
273/* Sets the allocation function to use, works like realloc. 414/* Sets the allocation function to use, works like realloc.
274 * It is used to allocate and free memory. 415 * It is used to allocate and free memory.
275 * If it returns zero when memory needs to be allocated, the library might abort 416 * If it returns zero when memory needs to be allocated, the library might abort
276 * or take some potentially destructive action. 417 * or take some potentially destructive action.
… …
282 * retryable syscall error 423 * retryable syscall error
283 * (such as failed select, poll, epoll_wait) 424 * (such as failed select, poll, epoll_wait)
284 */ 425 */
285void ev_set_syserr_cb (void (*cb)(const char *msg)); 426void ev_set_syserr_cb (void (*cb)(const char *msg));
286 427
287# 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
288/* 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 */
289/* you can call this as often as you like */ 438/* you can call this as often as you like */
290static struct ev_loop * 439EV_INLINE struct ev_loop *
291ev_default_loop (unsigned int flags) 440ev_default_loop (unsigned int flags)
292{ 441{
293 extern struct ev_loop *ev_default_loop_ptr; 442 struct ev_loop *loop = ev_default_loop_uc ();
443
444 if (!loop)
445 {
294 extern struct ev_loop *ev_default_loop_init (unsigned int flags); 446 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
295 447
296 if (!ev_default_loop_ptr)
297 ev_default_loop_init (flags); 448 loop = ev_default_loop_init (flags);
449 }
298 450
299 return ev_default_loop_ptr; 451 return loop;
300} 452}
301 453
302/* create and destroy alternative loops that don't handle signals */ 454/* create and destroy alternative loops that don't handle signals */
303struct ev_loop *ev_loop_new (unsigned int flags); 455struct ev_loop *ev_loop_new (unsigned int flags);
304void ev_loop_destroy (EV_P); 456void ev_loop_destroy (EV_P);
305void ev_loop_fork (EV_P); 457void ev_loop_fork (EV_P);
458void ev_loop_verify (EV_P);
306 459
307ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 460ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
461void ev_now_update (EV_P);
308 462
309# else 463#else
310 464
311int ev_default_loop (unsigned int flags); /* returns true when successful */ 465int ev_default_loop (unsigned int flags); /* returns true when successful */
312 466
313static ev_tstamp 467EV_INLINE ev_tstamp
314ev_now (void) 468ev_now (void)
315{ 469{
316 extern ev_tstamp ev_rt_now; 470 extern ev_tstamp ev_rt_now;
317 471
318 return ev_rt_now; 472 return ev_rt_now;
319} 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;
320# endif 485#endif
486}
321 487
322void ev_default_destroy (void); /* destroy the default loop */ 488void ev_default_destroy (void); /* destroy the default loop */
323/* 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 */
324/* 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 */
325/* you can call it in either the parent or the child */ 491/* you can call it in either the parent or the child */
326/* you can actually call it at any time, anywhere :) */ 492/* you can actually call it at any time, anywhere :) */
327void ev_default_fork (void); 493void ev_default_fork (void);
328 494
329unsigned int ev_backend (EV_P); 495unsigned int ev_backend (EV_P); /* backend in use by loop */
330#endif 496unsigned int ev_loop_count (EV_P); /* number of loop iterations */
497#endif /* prototypes */
331 498
332#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 499#define EVLOOP_NONBLOCK 1 /* do not block/wait */
333#define EVLOOP_ONESHOT 2 /* block *once* only */ 500#define EVLOOP_ONESHOT 2 /* block *once* only */
334#define EVUNLOOP_CANCEL 0 /* undo unloop */ 501#define EVUNLOOP_CANCEL 0 /* undo unloop */
335#define EVUNLOOP_ONE 1 /* unloop once */ 502#define EVUNLOOP_ONE 1 /* unloop once */
336#define EVUNLOOP_ALL 2 /* unloop all loops */ 503#define EVUNLOOP_ALL 2 /* unloop all loops */
337 504
338#if EV_PROTOTYPES 505#if EV_PROTOTYPES
339void ev_loop (EV_P_ int flags); 506void ev_loop (EV_P_ int flags);
340void 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 */
508
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 */
341 511
342/* 512/*
343 * 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
344 * 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
345 * 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.
346 */ 516 */
347void ev_ref (EV_P); 517void ev_ref (EV_P);
348void ev_unref (EV_P); 518void ev_unref (EV_P);
349 519
350/* 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 */
351/* if timeout is < 0, do wait indefinitely */ 521/* if timeout is < 0, do wait indefinitely */
352void 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);
353#endif 523#endif
354 524
355/* 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 */
356/* either use ev_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 */
357#define ev_init(ev,cb_) do { \ 527#define ev_init(ev,cb_) do { \
358 ((ev_watcher *)(void *)(ev))->active = \ 528 ((ev_watcher *)(void *)(ev))->active = \
359 ((ev_watcher *)(void *)(ev))->pending = \ 529 ((ev_watcher *)(void *)(ev))->pending = \
360 ((ev_watcher *)(void *)(ev))->priority = 0; \ 530 ((ev_watcher *)(void *)(ev))->priority = 0; \
361 ev_set_cb ((ev), cb_); \ 531 ev_set_cb ((ev), cb_); \
362} while (0) 532} while (0)
363 533
364#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)
365#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)
366#define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) 536#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
367#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)
368#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 */
369#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 */
370#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 */
371#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
372#define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } 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)
373 546
374#define ev_io_init(ev,cb,fd,events) do { ev_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)
375#define ev_timer_init(ev,cb,after,repeat) do { ev_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)
376#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } 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)
377#define ev_signal_init(ev,cb,signum) do { ev_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)
378#define ev_idle_init(ev,cb) do { ev_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)
379#define ev_prepare_init(ev,cb) do { ev_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)
380#define ev_check_init(ev,cb) do { ev_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)
381#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
382#define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } 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)
558#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
383 559
384#define ev_is_pending(ev) (0 + ((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 */
385#define ev_is_active(ev) (0 + ((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 */
386 562
387#define ev_priority(ev) ((ev_watcher *)(void *)(ev))->priority /* rw */ 563#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
388#define ev_cb(ev) (ev)->cb /* rw */ 564#define ev_cb(ev) (ev)->cb /* rw */
389#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.)
390 568
391#ifndef ev_set_cb 569#ifndef ev_set_cb
392# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 570# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
393#endif 571#endif
394 572
395/* 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 */
396/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 574/* stopping (disabling, deleting) a watcher does nothing unless its already running */
397#if EV_PROTOTYPES 575#if EV_PROTOTYPES
… …
399/* feeds an event into a watcher as if the event actually occured */ 577/* feeds an event into a watcher as if the event actually occured */
400/* accepts any ev_watcher type */ 578/* accepts any ev_watcher type */
401void ev_feed_event (EV_P_ void *w, int revents); 579void ev_feed_event (EV_P_ void *w, int revents);
402void ev_feed_fd_event (EV_P_ int fd, int revents); 580void ev_feed_fd_event (EV_P_ int fd, int revents);
403void ev_feed_signal_event (EV_P_ int signum); 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);
404 584
405void ev_io_start (EV_P_ ev_io *w); 585void ev_io_start (EV_P_ ev_io *w);
406void ev_io_stop (EV_P_ ev_io *w); 586void ev_io_stop (EV_P_ ev_io *w);
407 587
408void ev_timer_start (EV_P_ ev_timer *w); 588void ev_timer_start (EV_P_ ev_timer *w);
409void ev_timer_stop (EV_P_ ev_timer *w); 589void ev_timer_stop (EV_P_ ev_timer *w);
410/* 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 */
411void ev_timer_again (EV_P_ ev_timer *w); 591void ev_timer_again (EV_P_ ev_timer *w);
412 592
413#if EV_PERIODICS 593#if EV_PERIODIC_ENABLE
414void ev_periodic_start (EV_P_ ev_periodic *w); 594void ev_periodic_start (EV_P_ ev_periodic *w);
415void ev_periodic_stop (EV_P_ ev_periodic *w); 595void ev_periodic_stop (EV_P_ ev_periodic *w);
416void ev_periodic_again (EV_P_ ev_periodic *w); 596void ev_periodic_again (EV_P_ ev_periodic *w);
417#endif 597#endif
418 598
419void ev_idle_start (EV_P_ ev_idle *w);
420void ev_idle_stop (EV_P_ ev_idle *w);
421
422void ev_prepare_start (EV_P_ ev_prepare *w);
423void ev_prepare_stop (EV_P_ ev_prepare *w);
424
425void ev_check_start (EV_P_ ev_check *w);
426void ev_check_stop (EV_P_ ev_check *w);
427
428/* only supported in the default loop */ 599/* only supported in the default loop */
429void ev_signal_start (EV_P_ ev_signal *w); 600void ev_signal_start (EV_P_ ev_signal *w);
430void ev_signal_stop (EV_P_ ev_signal *w); 601void ev_signal_stop (EV_P_ ev_signal *w);
431 602
432/* only supported in the default loop */ 603/* only supported in the default loop */
433void ev_child_start (EV_P_ ev_child *w); 604void ev_child_start (EV_P_ ev_child *w);
434void ev_child_stop (EV_P_ ev_child *w); 605void ev_child_stop (EV_P_ ev_child *w);
435 606
436# if EV_MULTIPLICITY 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
437/* only supported when loop to be embedded is in fact embeddable */ 630/* only supported when loop to be embedded is in fact embeddable */
438void ev_embed_start (EV_P_ ev_embed *w); 631void ev_embed_start (EV_P_ ev_embed *w);
439void ev_embed_stop (EV_P_ ev_embed *w); 632void ev_embed_stop (EV_P_ ev_embed *w);
440void ev_embed_loop (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);
441# endif 640# endif
442 641
443#endif 642#endif
444 643
445#ifdef __cplusplus 644#ifdef __cplusplus

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