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Comparing libev/ev.h (file contents):
Revision 1.64 by root, Fri Nov 23 19:13:33 2007 UTC vs.
Revision 1.112 by root, Sat Mar 28 22:17:17 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 */
139#define EV_TIMER EV_TIMEOUT /* alias for type-detection */
79#define EV_PERIODIC 0x000200L /* periodic timer only */ 140#define EV_PERIODIC 0x00000200 /* periodic timer timed out */
80#define EV_SIGNAL 0x000400L /* signal only */ 141#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 */ 142#define EV_CHILD 0x00000800 /* child/pid had status change */
143#define EV_STAT 0x00001000 /* stat data changed */
144#define EV_IDLE 0x00002000 /* event loop is idling */
145#define EV_PREPARE 0x00004000 /* event loop about to poll */
146#define EV_CHECK 0x00008000 /* event loop finished poll */
85#define EV_EMBED 0x008000L /* embedded event loop */ 147#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
148#define EV_FORK 0x00020000 /* event loop resumed in child */
149#define EV_ASYNC 0x00040000 /* async intra-loop signal */
86#define EV_ERROR 0x800000L /* sent when an error occurs */ 150#define EV_ERROR 0x80000000 /* sent when an error occurs */
87 151
88/* can be used to add custom fields to all watchers, while losing binary compatibility */ 152/* can be used to add custom fields to all watchers, while losing binary compatibility */
89#ifndef EV_COMMON 153#ifndef EV_COMMON
90# define EV_COMMON void *data; 154# define EV_COMMON void *data;
91#endif 155#endif
92#ifndef EV_PROTOTYPES 156#ifndef EV_PROTOTYPES
93# define EV_PROTOTYPES 1 157# define EV_PROTOTYPES 1
94#endif 158#endif
95 159
96#define EV_VERSION_MAJOR 1 160#define EV_VERSION_MAJOR 3
97#define EV_VERSION_MINOR 1 161#define EV_VERSION_MINOR 0
98 162
99#ifndef EV_CB_DECLARE 163#ifndef EV_CB_DECLARE
100# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); 164# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
101#endif 165#endif
102#ifndef EV_CB_INVOKE 166#ifndef EV_CB_INVOKE
103# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) 167# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
104#endif 168#endif
105 169
106/* 170/*
107 * struct member types: 171 * struct member types:
108 * private: you can look at them, but not change them, and they might not mean anything to you. 172 * private: you may look at them, but not change them,
173 * and they might not mean anything to you.
109 * ro: can be read anytime, but only changed when the watcher isn't active 174 * 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 175 * rw: can be read and modified anytime, even when the watcher is active.
176 *
177 * some internal details that might be helpful for debugging:
178 *
179 * active is either 0, which means the watcher is not active,
180 * or the array index of the watcher (periodics, timers)
181 * or the array index + 1 (most other watchers)
182 * or simply 1 for watchers that aren't in some array.
183 * pending is either 0, in which case the watcher isn't,
184 * or the array index + 1 in the pendings array.
111 */ 185 */
112 186
113/* shared by all watchers */ 187/* shared by all watchers */
114#define EV_WATCHER(type) \ 188#define EV_WATCHER(type) \
115 int active; /* private */ \ 189 int active; /* private */ \
… …
125#define EV_WATCHER_TIME(type) \ 199#define EV_WATCHER_TIME(type) \
126 EV_WATCHER (type) \ 200 EV_WATCHER (type) \
127 ev_tstamp at; /* private */ 201 ev_tstamp at; /* private */
128 202
129/* base class, nothing to see here unless you subclass */ 203/* base class, nothing to see here unless you subclass */
130struct ev_watcher 204typedef struct ev_watcher
131{ 205{
132 EV_WATCHER (ev_watcher) 206 EV_WATCHER (ev_watcher)
133}; 207} ev_watcher;
134 208
135/* base class, nothing to see here unless you subclass */ 209/* base class, nothing to see here unless you subclass */
136struct ev_watcher_list 210typedef struct ev_watcher_list
137{ 211{
138 EV_WATCHER_LIST (ev_watcher_list) 212 EV_WATCHER_LIST (ev_watcher_list)
139}; 213} ev_watcher_list;
140 214
141/* base class, nothing to see here unless you subclass */ 215/* base class, nothing to see here unless you subclass */
142struct ev_watcher_time 216typedef struct ev_watcher_time
143{ 217{
144 EV_WATCHER_TIME (ev_watcher_time) 218 EV_WATCHER_TIME (ev_watcher_time)
145}; 219} ev_watcher_time;
220
221/* invoked when fd is either EV_READable or EV_WRITEable */
222/* revent EV_READ, EV_WRITE */
223typedef struct ev_io
224{
225 EV_WATCHER_LIST (ev_io)
226
227 int fd; /* ro */
228 int events; /* ro */
229} ev_io;
146 230
147/* invoked after a specific time, repeatable (based on monotonic clock) */ 231/* invoked after a specific time, repeatable (based on monotonic clock) */
148/* revent EV_TIMEOUT */ 232/* revent EV_TIMEOUT */
149struct ev_timer 233typedef struct ev_timer
150{ 234{
151 EV_WATCHER_TIME (ev_timer) 235 EV_WATCHER_TIME (ev_timer)
152 236
153 ev_tstamp repeat; /* rw */ 237 ev_tstamp repeat; /* rw */
154}; 238} ev_timer;
155 239
156/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 240/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
157/* revent EV_PERIODIC */ 241/* revent EV_PERIODIC */
158struct ev_periodic 242typedef struct ev_periodic
159{ 243{
160 EV_WATCHER_TIME (ev_periodic) 244 EV_WATCHER_TIME (ev_periodic)
161 245
246 ev_tstamp offset; /* rw */
162 ev_tstamp interval; /* rw */ 247 ev_tstamp interval; /* rw */
163 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ 248 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
164}; 249} ev_periodic;
165
166/* invoked when fd is either EV_READable or EV_WRITEable */
167/* revent EV_READ, EV_WRITE */
168struct ev_io
169{
170 EV_WATCHER_LIST (ev_io)
171
172 int fd; /* ro */
173 int events; /* ro */
174};
175 250
176/* invoked when the given signal has been received */ 251/* invoked when the given signal has been received */
177/* revent EV_SIGNAL */ 252/* revent EV_SIGNAL */
178struct ev_signal 253typedef struct ev_signal
179{ 254{
180 EV_WATCHER_LIST (ev_signal) 255 EV_WATCHER_LIST (ev_signal)
181 256
182 int signum; /* ro */ 257 int signum; /* ro */
183}; 258} ev_signal;
184 259
260/* invoked when sigchld is received and waitpid indicates the given pid */
261/* revent EV_CHILD */
262/* does not support priorities */
263typedef struct ev_child
264{
265 EV_WATCHER_LIST (ev_child)
266
267 int flags; /* private */
268 int pid; /* ro */
269 int rpid; /* rw, holds the received pid */
270 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
271} ev_child;
272
273#if EV_STAT_ENABLE
274/* st_nlink = 0 means missing file or other error */
275# ifdef _WIN32
276typedef struct _stati64 ev_statdata;
277# else
278typedef struct stat ev_statdata;
279# endif
280
281/* invoked each time the stat data changes for a given path */
282/* revent EV_STAT */
283typedef struct ev_stat
284{
285 EV_WATCHER_LIST (ev_stat)
286
287 ev_timer timer; /* private */
288 ev_tstamp interval; /* ro */
289 const char *path; /* ro */
290 ev_statdata prev; /* ro */
291 ev_statdata attr; /* ro */
292
293 int wd; /* wd for inotify, fd for kqueue */
294} ev_stat;
295#endif
296
297#if EV_IDLE_ENABLE
185/* invoked when the nothing else needs to be done, keeps the process from blocking */ 298/* invoked when the nothing else needs to be done, keeps the process from blocking */
186/* revent EV_IDLE */ 299/* revent EV_IDLE */
187struct ev_idle 300typedef struct ev_idle
188{ 301{
189 EV_WATCHER (ev_idle) 302 EV_WATCHER (ev_idle)
190}; 303} ev_idle;
304#endif
191 305
192/* invoked for each run of the mainloop, just before the blocking call */ 306/* invoked for each run of the mainloop, just before the blocking call */
193/* you can still change events in any way you like */ 307/* you can still change events in any way you like */
194/* revent EV_PREPARE */ 308/* revent EV_PREPARE */
195struct ev_prepare 309typedef struct ev_prepare
196{ 310{
197 EV_WATCHER (ev_prepare) 311 EV_WATCHER (ev_prepare)
198}; 312} ev_prepare;
199 313
200/* invoked for each run of the mainloop, just after the blocking call */ 314/* invoked for each run of the mainloop, just after the blocking call */
201/* revent EV_CHECK */ 315/* revent EV_CHECK */
202struct ev_check 316typedef struct ev_check
203{ 317{
204 EV_WATCHER (ev_check) 318 EV_WATCHER (ev_check)
205}; 319} ev_check;
206 320
207/* invoked when sigchld is received and waitpid indicates the given pid */ 321#if EV_FORK_ENABLE
208/* revent EV_CHILD */ 322/* the callback gets invoked before check in the child process when a fork was detected */
209/* does not support priorities */ 323typedef struct ev_fork
210struct ev_child
211{ 324{
212 EV_WATCHER_LIST (ev_child) 325 EV_WATCHER (ev_fork)
326} ev_fork;
327#endif
213 328
214 int pid; /* ro */ 329#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};
218
219#if EV_MULTIPLICITY
220/* used to embed an event loop inside another */ 330/* used to embed an event loop inside another */
221/* the callback gets invoked when the event loop has handled events, and can be 0 */ 331/* the callback gets invoked when the event loop has handled events, and can be 0 */
222struct ev_embed 332typedef struct ev_embed
223{ 333{
224 EV_WATCHER (ev_embed) 334 EV_WATCHER (ev_embed)
225 335
226 struct ev_io io; /* private */
227 struct ev_loop *loop; /* ro */ 336 struct ev_loop *other; /* ro */
228}; 337 ev_io io; /* private */
338 ev_prepare prepare; /* private */
339 ev_check check; /* unused */
340 ev_timer timer; /* unused */
341 ev_periodic periodic; /* unused */
342 ev_idle idle; /* unused */
343 ev_fork fork; /* private */
344} ev_embed;
345#endif
346
347#if EV_ASYNC_ENABLE
348/* invoked when somebody calls ev_async_send on the watcher */
349/* revent EV_ASYNC */
350typedef struct ev_async
351{
352 EV_WATCHER (ev_async)
353
354 EV_ATOMIC_T sent; /* private */
355} ev_async;
356
357# define ev_async_pending(w) ((w)->sent + 0)
229#endif 358#endif
230 359
231/* the presence of this union forces similar struct layout */ 360/* the presence of this union forces similar struct layout */
232union ev_any_watcher 361union ev_any_watcher
233{ 362{
… …
235 struct ev_watcher_list wl; 364 struct ev_watcher_list wl;
236 365
237 struct ev_io io; 366 struct ev_io io;
238 struct ev_timer timer; 367 struct ev_timer timer;
239 struct ev_periodic periodic; 368 struct ev_periodic periodic;
369 struct ev_signal signal;
370 struct ev_child child;
371#if EV_STAT_ENABLE
372 struct ev_stat stat;
373#endif
374#if EV_IDLE_ENABLE
240 struct ev_idle idle; 375 struct ev_idle idle;
376#endif
241 struct ev_prepare prepare; 377 struct ev_prepare prepare;
242 struct ev_check check; 378 struct ev_check check;
243 struct ev_signal signal; 379#if EV_FORK_ENABLE
244 struct ev_child child; 380 struct ev_fork fork;
381#endif
382#if EV_EMBED_ENABLE
245 struct ev_embed embed; 383 struct ev_embed embed;
384#endif
385#if EV_ASYNC_ENABLE
386 struct ev_async async;
387#endif
246}; 388};
247 389
248/* bits for ev_default_loop and ev_loop_new */ 390/* bits for ev_default_loop and ev_loop_new */
249/* the default */ 391/* the default */
250#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ 392#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
251/* flag bits */ 393/* flag bits */
252#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ 394#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
395#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
253/* method bits to be ored together */ 396/* method bits to be ored together */
254#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ 397#define EVBACKEND_SELECT 0x00000001U /* about anywhere */
255#define EVBACKEND_POLL 0x00000002UL /* !win */ 398#define EVBACKEND_POLL 0x00000002U /* !win */
256#define EVBACKEND_EPOLL 0x00000004UL /* linux */ 399#define EVBACKEND_EPOLL 0x00000004U /* linux */
257#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ 400#define EVBACKEND_KQUEUE 0x00000008U /* bsd */
258#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ 401#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
259#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ 402#define EVBACKEND_PORT 0x00000020U /* solaris 10 */
260 403
261#if EV_PROTOTYPES 404#if EV_PROTOTYPES
262int ev_version_major (void); 405int ev_version_major (void);
263int ev_version_minor (void); 406int ev_version_minor (void);
264 407
265unsigned int ev_supported_backends (void); 408unsigned int ev_supported_backends (void);
266unsigned int ev_recommended_backends (void); 409unsigned int ev_recommended_backends (void);
267unsigned int ev_embeddable_backends (void); 410unsigned int ev_embeddable_backends (void);
268 411
269ev_tstamp ev_time (void); 412ev_tstamp ev_time (void);
413void ev_sleep (ev_tstamp delay); /* sleep for a while */
270 414
271/* Sets the allocation function to use, works like realloc. 415/* Sets the allocation function to use, works like realloc.
272 * It is used to allocate and free memory. 416 * It is used to allocate and free memory.
273 * If it returns zero when memory needs to be allocated, the library might abort 417 * If it returns zero when memory needs to be allocated, the library might abort
274 * or take some potentially destructive action. 418 * or take some potentially destructive action.
… …
280 * retryable syscall error 424 * retryable syscall error
281 * (such as failed select, poll, epoll_wait) 425 * (such as failed select, poll, epoll_wait)
282 */ 426 */
283void ev_set_syserr_cb (void (*cb)(const char *msg)); 427void ev_set_syserr_cb (void (*cb)(const char *msg));
284 428
285# if EV_MULTIPLICITY 429#if EV_MULTIPLICITY
430EV_INLINE struct ev_loop *
431ev_default_loop_uc (void)
432{
433 extern struct ev_loop *ev_default_loop_ptr;
434
435 return ev_default_loop_ptr;
436}
437
286/* the default loop is the only one that handles signals and child watchers */ 438/* the default loop is the only one that handles signals and child watchers */
287/* you can call this as often as you like */ 439/* you can call this as often as you like */
288static struct ev_loop * 440EV_INLINE struct ev_loop *
289ev_default_loop (unsigned int flags) 441ev_default_loop (unsigned int flags)
290{ 442{
291 extern struct ev_loop *ev_default_loop_ptr; 443 struct ev_loop *loop = ev_default_loop_uc ();
444
445 if (!loop)
446 {
292 extern struct ev_loop *ev_default_loop_init (unsigned int flags); 447 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
293 448
294 if (!ev_default_loop_ptr)
295 ev_default_loop_init (flags); 449 loop = ev_default_loop_init (flags);
450 }
296 451
297 return ev_default_loop_ptr; 452 return loop;
298} 453}
299 454
300/* create and destroy alternative loops that don't handle signals */ 455/* create and destroy alternative loops that don't handle signals */
301struct ev_loop *ev_loop_new (unsigned int flags); 456struct ev_loop *ev_loop_new (unsigned int flags);
302void ev_loop_destroy (EV_P); 457void ev_loop_destroy (EV_P);
303void ev_loop_fork (EV_P); 458void ev_loop_fork (EV_P);
459void ev_loop_verify (EV_P);
304 460
305ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 461ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
462void ev_now_update (EV_P);
306 463
307# else 464#else
308 465
309int ev_default_loop (unsigned int flags); /* returns true when successful */ 466int ev_default_loop (unsigned int flags); /* returns true when successful */
310 467
311static ev_tstamp 468EV_INLINE ev_tstamp
312ev_now (void) 469ev_now (void)
313{ 470{
314 extern ev_tstamp ev_rt_now; 471 extern ev_tstamp ev_rt_now;
315 472
316 return ev_rt_now; 473 return ev_rt_now;
317} 474}
475#endif /* multiplicity */
476
477EV_INLINE int
478ev_is_default_loop (EV_P)
479{
480#if EV_MULTIPLICITY
481 extern struct ev_loop *ev_default_loop_ptr;
482
483 return !!(EV_A == ev_default_loop_ptr);
484#else
485 return 1;
318# endif 486#endif
487}
319 488
320void ev_default_destroy (void); /* destroy the default loop */ 489void ev_default_destroy (void); /* destroy the default loop */
321/* this needs to be called after fork, to duplicate the default loop */ 490/* this needs to be called after fork, to duplicate the default loop */
322/* if you create alternative loops you have to call ev_loop_fork on them */ 491/* if you create alternative loops you have to call ev_loop_fork on them */
323/* you can call it in either the parent or the child */ 492/* you can call it in either the parent or the child */
324/* you can actually call it at any time, anywhere :) */ 493/* you can actually call it at any time, anywhere :) */
325void ev_default_fork (void); 494void ev_default_fork (void);
326 495
327unsigned int ev_backend (EV_P); 496#if 0
497/* walk (almost) all watchers in the loop of a given type, invoking the */
498/* callback on every such watcher. The callback might stop the watcher, */
499/* but do nothing else with the loop */
500void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
328#endif 501#endif
502
503unsigned int ev_backend (EV_P); /* backend in use by loop */
504unsigned int ev_loop_count (EV_P); /* number of loop iterations */
505#endif /* prototypes */
329 506
330#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 507#define EVLOOP_NONBLOCK 1 /* do not block/wait */
331#define EVLOOP_ONESHOT 2 /* block *once* only */ 508#define EVLOOP_ONESHOT 2 /* block *once* only */
509#define EVUNLOOP_CANCEL 0 /* undo unloop */
332#define EVUNLOOP_ONE 1 /* unloop once */ 510#define EVUNLOOP_ONE 1 /* unloop once */
333#define EVUNLOOP_ALL 2 /* unloop all loops */ 511#define EVUNLOOP_ALL 2 /* unloop all loops */
334 512
335#if EV_PROTOTYPES 513#if EV_PROTOTYPES
336void ev_loop (EV_P_ int flags); 514void ev_loop (EV_P_ int flags);
337void 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 */ 515void 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 */
516
517void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
518void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
338 519
339/* 520/*
340 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher 521 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
341 * keeps one reference. if you have a long-runing watcher you never unregister that 522 * keeps one reference. if you have a long-runing watcher you never unregister that
342 * should not keep ev_loop from running, unref() after starting, and ref() before stopping. 523 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
343 */ 524 */
344void ev_ref (EV_P); 525void ev_ref (EV_P);
345void ev_unref (EV_P); 526void ev_unref (EV_P);
346 527
347/* convinience function, wait for a single event, without registering an event watcher */ 528/* convenience function, wait for a single event, without registering an event watcher */
348/* if timeout is < 0, do wait indefinitely */ 529/* if timeout is < 0, do wait indefinitely */
349void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 530void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
350#endif 531#endif
351 532
352/* these may evaluate ev multiple times, and the other arguments at most once */ 533/* these may evaluate ev multiple times, and the other arguments at most once */
353/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ 534/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
354#define ev_init(ev,cb_) do { \ 535#define ev_init(ev,cb_) do { \
355 ((struct ev_watcher *)(void *)(ev))->active = \ 536 ((ev_watcher *)(void *)(ev))->active = \
356 ((struct ev_watcher *)(void *)(ev))->pending = \ 537 ((ev_watcher *)(void *)(ev))->pending = \
357 ((struct ev_watcher *)(void *)(ev))->priority = 0; \ 538 ((ev_watcher *)(void *)(ev))->priority = 0; \
358 ev_set_cb ((ev), cb_); \ 539 ev_set_cb ((ev), cb_); \
359} while (0) 540} while (0)
360 541
361#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 542#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
362#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 543#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
363#define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) 544#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
364#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 545#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
546#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
547#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
365#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 548#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
366#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 549#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
367#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 550#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
368#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
369#define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0) 551#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
552#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
553#define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
370 554
371#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 555#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
372#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 556#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
373#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) 557#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
374#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) 558#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
559#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
560#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
375#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 561#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
376#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 562#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
377#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 563#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
378#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
379#define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0) 564#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
565#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
566#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
380 567
381#define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 568#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
382#define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 569#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
383 570
384#define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ 571#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
385#define ev_cb(ev) (ev)->cb /* rw */ 572#define ev_cb(ev) (ev)->cb /* rw */
386#define ev_set_priority(ev,pri) ev_priority (ev) = (pri) 573#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
574
575#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
387 576
388#ifndef ev_set_cb 577#ifndef ev_set_cb
389# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 578# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
390#endif 579#endif
391 580
392/* stopping (enabling, adding) a watcher does nothing if it is already running */ 581/* stopping (enabling, adding) a watcher does nothing if it is already running */
393/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 582/* stopping (disabling, deleting) a watcher does nothing unless its already running */
394#if EV_PROTOTYPES 583#if EV_PROTOTYPES
… …
396/* feeds an event into a watcher as if the event actually occured */ 585/* feeds an event into a watcher as if the event actually occured */
397/* accepts any ev_watcher type */ 586/* accepts any ev_watcher type */
398void ev_feed_event (EV_P_ void *w, int revents); 587void ev_feed_event (EV_P_ void *w, int revents);
399void ev_feed_fd_event (EV_P_ int fd, int revents); 588void ev_feed_fd_event (EV_P_ int fd, int revents);
400void ev_feed_signal_event (EV_P_ int signum); 589void ev_feed_signal_event (EV_P_ int signum);
590void ev_invoke (EV_P_ void *w, int revents);
591int ev_clear_pending (EV_P_ void *w);
401 592
402void ev_io_start (EV_P_ struct ev_io *w); 593void ev_io_start (EV_P_ ev_io *w);
403void ev_io_stop (EV_P_ struct ev_io *w); 594void ev_io_stop (EV_P_ ev_io *w);
404 595
405void ev_timer_start (EV_P_ struct ev_timer *w); 596void ev_timer_start (EV_P_ ev_timer *w);
406void ev_timer_stop (EV_P_ struct ev_timer *w); 597void ev_timer_stop (EV_P_ ev_timer *w);
407/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 598/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
408void ev_timer_again (EV_P_ struct ev_timer *w); 599void ev_timer_again (EV_P_ ev_timer *w);
409 600
410#if EV_PERIODICS 601#if EV_PERIODIC_ENABLE
411void ev_periodic_start (EV_P_ struct ev_periodic *w); 602void ev_periodic_start (EV_P_ ev_periodic *w);
412void ev_periodic_stop (EV_P_ struct ev_periodic *w); 603void ev_periodic_stop (EV_P_ ev_periodic *w);
413void ev_periodic_again (EV_P_ struct ev_periodic *w); 604void ev_periodic_again (EV_P_ ev_periodic *w);
414#endif 605#endif
415
416void ev_idle_start (EV_P_ struct ev_idle *w);
417void ev_idle_stop (EV_P_ struct ev_idle *w);
418
419void ev_prepare_start (EV_P_ struct ev_prepare *w);
420void ev_prepare_stop (EV_P_ struct ev_prepare *w);
421
422void ev_check_start (EV_P_ struct ev_check *w);
423void ev_check_stop (EV_P_ struct ev_check *w);
424 606
425/* only supported in the default loop */ 607/* only supported in the default loop */
426void ev_signal_start (EV_P_ struct ev_signal *w); 608void ev_signal_start (EV_P_ ev_signal *w);
427void ev_signal_stop (EV_P_ struct ev_signal *w); 609void ev_signal_stop (EV_P_ ev_signal *w);
428 610
429/* only supported in the default loop */ 611/* only supported in the default loop */
430void ev_child_start (EV_P_ struct ev_child *w); 612void ev_child_start (EV_P_ ev_child *w);
431void ev_child_stop (EV_P_ struct ev_child *w); 613void ev_child_stop (EV_P_ ev_child *w);
432 614
433# if EV_MULTIPLICITY 615# if EV_STAT_ENABLE
616void ev_stat_start (EV_P_ ev_stat *w);
617void ev_stat_stop (EV_P_ ev_stat *w);
618void ev_stat_stat (EV_P_ ev_stat *w);
619# endif
620
621# if EV_IDLE_ENABLE
622void ev_idle_start (EV_P_ ev_idle *w);
623void ev_idle_stop (EV_P_ ev_idle *w);
624# endif
625
626void ev_prepare_start (EV_P_ ev_prepare *w);
627void ev_prepare_stop (EV_P_ ev_prepare *w);
628
629void ev_check_start (EV_P_ ev_check *w);
630void ev_check_stop (EV_P_ ev_check *w);
631
632# if EV_FORK_ENABLE
633void ev_fork_start (EV_P_ ev_fork *w);
634void ev_fork_stop (EV_P_ ev_fork *w);
635# endif
636
637# if EV_EMBED_ENABLE
434/* only supported when loop to be embedded is in fact embeddable */ 638/* only supported when loop to be embedded is in fact embeddable */
435void ev_embed_start (EV_P_ struct ev_embed *w); 639void ev_embed_start (EV_P_ ev_embed *w);
436void ev_embed_stop (EV_P_ struct ev_embed *w); 640void ev_embed_stop (EV_P_ ev_embed *w);
641void ev_embed_sweep (EV_P_ ev_embed *w);
642# endif
643
644# if EV_ASYNC_ENABLE
645void ev_async_start (EV_P_ ev_async *w);
646void ev_async_stop (EV_P_ ev_async *w);
647void ev_async_send (EV_P_ ev_async *w);
437# endif 648# endif
438 649
439#endif 650#endif
440 651
441#ifdef __cplusplus 652#ifdef __cplusplus

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