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Comparing libev/ev.h (file contents):
Revision 1.65 by root, Sat Nov 24 06:23:27 2007 UTC vs.
Revision 1.106 by root, Mon Sep 29 03:31:14 2008 UTC

1/* 1/*
2 * libev native API header
3 *
2 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 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 */
134#define EV_READ 0x01 /* ev_io detected read will not block */
135#define EV_WRITE 0x02 /* ev_io detected write will not block */
77#define EV_WRITE 0x02L /* io only */ 136#define EV_IOFDSET 0x80 /* internal use only */
78#define EV_TIMEOUT 0x000100L /* timer only */ 137#define EV_TIMEOUT 0x00000100 /* timer timed out */
79#define EV_PERIODIC 0x000200L /* periodic timer only */ 138#define EV_PERIODIC 0x00000200 /* periodic timer timed out */
80#define EV_SIGNAL 0x000400L /* signal only */ 139#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 */ 140#define EV_CHILD 0x00000800 /* child/pid had status change */
141#define EV_STAT 0x00001000 /* stat data changed */
142#define EV_IDLE 0x00002000 /* event loop is idling */
143#define EV_PREPARE 0x00004000 /* event loop about to poll */
144#define EV_CHECK 0x00008000 /* event loop finished poll */
85#define EV_EMBED 0x008000L /* embedded event loop */ 145#define EV_EMBED 0x00010000 /* embedded event loop needs sweep */
146#define EV_FORK 0x00020000 /* event loop resumed in child */
147#define EV_ASYNC 0x00040000 /* async intra-loop signal */
86#define EV_ERROR 0x800000L /* sent when an error occurs */ 148#define EV_ERROR 0x80000000 /* sent when an error occurs */
87 149
88/* can be used to add custom fields to all watchers, while losing binary compatibility */ 150/* can be used to add custom fields to all watchers, while losing binary compatibility */
89#ifndef EV_COMMON 151#ifndef EV_COMMON
90# define EV_COMMON void *data; 152# define EV_COMMON void *data;
91#endif 153#endif
92#ifndef EV_PROTOTYPES 154#ifndef EV_PROTOTYPES
93# define EV_PROTOTYPES 1 155# define EV_PROTOTYPES 1
94#endif 156#endif
95 157
96#define EV_VERSION_MAJOR 1 158#define EV_VERSION_MAJOR 3
97#define EV_VERSION_MINOR 1 159#define EV_VERSION_MINOR 0
98 160
99#ifndef EV_CB_DECLARE 161#ifndef EV_CB_DECLARE
100# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); 162# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
101#endif 163#endif
102#ifndef EV_CB_INVOKE 164#ifndef EV_CB_INVOKE
… …
106/* 168/*
107 * struct member types: 169 * struct member types:
108 * private: you can look at them, but not change them, and they might not mean anything to you. 170 * private: you can look at them, but not change them, and they might not mean anything to you.
109 * ro: can be read anytime, but only changed when the watcher isn't active 171 * 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 172 * rw: can be read and modified anytime, even when the watcher is active
173 *
174 * some internal details that might be helpful for debugging:
175 *
176 * active is either 0, which means the watcher is not active,
177 * or the array index of the watcher (periodics, timers)
178 * or the array index + 1 (most other watchers)
179 * or simply 1 for watchers that aren't in some array.
180 * pending is either 0, in which case the watcher isn't,
181 * or the array index + 1 in the pendings array.
111 */ 182 */
112 183
113/* shared by all watchers */ 184/* shared by all watchers */
114#define EV_WATCHER(type) \ 185#define EV_WATCHER(type) \
115 int active; /* private */ \ 186 int active; /* private */ \
… …
125#define EV_WATCHER_TIME(type) \ 196#define EV_WATCHER_TIME(type) \
126 EV_WATCHER (type) \ 197 EV_WATCHER (type) \
127 ev_tstamp at; /* private */ 198 ev_tstamp at; /* private */
128 199
129/* base class, nothing to see here unless you subclass */ 200/* base class, nothing to see here unless you subclass */
130struct ev_watcher 201typedef struct ev_watcher
131{ 202{
132 EV_WATCHER (ev_watcher) 203 EV_WATCHER (ev_watcher)
133}; 204} ev_watcher;
134 205
135/* base class, nothing to see here unless you subclass */ 206/* base class, nothing to see here unless you subclass */
136struct ev_watcher_list 207typedef struct ev_watcher_list
137{ 208{
138 EV_WATCHER_LIST (ev_watcher_list) 209 EV_WATCHER_LIST (ev_watcher_list)
139}; 210} ev_watcher_list;
140 211
141/* base class, nothing to see here unless you subclass */ 212/* base class, nothing to see here unless you subclass */
142struct ev_watcher_time 213typedef struct ev_watcher_time
143{ 214{
144 EV_WATCHER_TIME (ev_watcher_time) 215 EV_WATCHER_TIME (ev_watcher_time)
145}; 216} ev_watcher_time;
217
218/* invoked when fd is either EV_READable or EV_WRITEable */
219/* revent EV_READ, EV_WRITE */
220typedef struct ev_io
221{
222 EV_WATCHER_LIST (ev_io)
223
224 int fd; /* ro */
225 int events; /* ro */
226} ev_io;
146 227
147/* invoked after a specific time, repeatable (based on monotonic clock) */ 228/* invoked after a specific time, repeatable (based on monotonic clock) */
148/* revent EV_TIMEOUT */ 229/* revent EV_TIMEOUT */
149struct ev_timer 230typedef struct ev_timer
150{ 231{
151 EV_WATCHER_TIME (ev_timer) 232 EV_WATCHER_TIME (ev_timer)
152 233
153 ev_tstamp repeat; /* rw */ 234 ev_tstamp repeat; /* rw */
154}; 235} ev_timer;
155 236
156/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 237/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
157/* revent EV_PERIODIC */ 238/* revent EV_PERIODIC */
158struct ev_periodic 239typedef struct ev_periodic
159{ 240{
160 EV_WATCHER_TIME (ev_periodic) 241 EV_WATCHER_TIME (ev_periodic)
161 242
243 ev_tstamp offset; /* rw */
162 ev_tstamp interval; /* rw */ 244 ev_tstamp interval; /* rw */
163 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ 245 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
164}; 246} 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};
175 247
176/* invoked when the given signal has been received */ 248/* invoked when the given signal has been received */
177/* revent EV_SIGNAL */ 249/* revent EV_SIGNAL */
178struct ev_signal 250typedef struct ev_signal
179{ 251{
180 EV_WATCHER_LIST (ev_signal) 252 EV_WATCHER_LIST (ev_signal)
181 253
182 int signum; /* ro */ 254 int signum; /* ro */
183}; 255} ev_signal;
184 256
257/* invoked when sigchld is received and waitpid indicates the given pid */
258/* revent EV_CHILD */
259/* does not support priorities */
260typedef struct ev_child
261{
262 EV_WATCHER_LIST (ev_child)
263
264 int flags; /* private */
265 int pid; /* ro */
266 int rpid; /* rw, holds the received pid */
267 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
268} ev_child;
269
270#if EV_STAT_ENABLE
271/* st_nlink = 0 means missing file or other error */
272# ifdef _WIN32
273typedef struct _stati64 ev_statdata;
274# else
275typedef struct stat ev_statdata;
276# endif
277
278/* invoked each time the stat data changes for a given path */
279/* revent EV_STAT */
280typedef struct ev_stat
281{
282 EV_WATCHER_LIST (ev_stat)
283
284 ev_timer timer; /* private */
285 ev_tstamp interval; /* ro */
286 const char *path; /* ro */
287 ev_statdata prev; /* ro */
288 ev_statdata attr; /* ro */
289
290 int wd; /* wd for inotify, fd for kqueue */
291} ev_stat;
292#endif
293
294#if EV_IDLE_ENABLE
185/* invoked when the nothing else needs to be done, keeps the process from blocking */ 295/* invoked when the nothing else needs to be done, keeps the process from blocking */
186/* revent EV_IDLE */ 296/* revent EV_IDLE */
187struct ev_idle 297typedef struct ev_idle
188{ 298{
189 EV_WATCHER (ev_idle) 299 EV_WATCHER (ev_idle)
190}; 300} ev_idle;
301#endif
191 302
192/* invoked for each run of the mainloop, just before the blocking call */ 303/* invoked for each run of the mainloop, just before the blocking call */
193/* you can still change events in any way you like */ 304/* you can still change events in any way you like */
194/* revent EV_PREPARE */ 305/* revent EV_PREPARE */
195struct ev_prepare 306typedef struct ev_prepare
196{ 307{
197 EV_WATCHER (ev_prepare) 308 EV_WATCHER (ev_prepare)
198}; 309} ev_prepare;
199 310
200/* invoked for each run of the mainloop, just after the blocking call */ 311/* invoked for each run of the mainloop, just after the blocking call */
201/* revent EV_CHECK */ 312/* revent EV_CHECK */
202struct ev_check 313typedef struct ev_check
203{ 314{
204 EV_WATCHER (ev_check) 315 EV_WATCHER (ev_check)
205}; 316} ev_check;
206 317
207/* invoked when sigchld is received and waitpid indicates the given pid */ 318#if EV_FORK_ENABLE
208/* revent EV_CHILD */ 319/* the callback gets invoked before check in the child process when a fork was detected */
209/* does not support priorities */ 320typedef struct ev_fork
210struct ev_child
211{ 321{
212 EV_WATCHER_LIST (ev_child) 322 EV_WATCHER (ev_fork)
323} ev_fork;
324#endif
213 325
214 int pid; /* ro */ 326#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 */ 327/* used to embed an event loop inside another */
221/* the callback gets invoked when the event loop has handled events, and can be 0 */ 328/* the callback gets invoked when the event loop has handled events, and can be 0 */
222struct ev_embed 329typedef struct ev_embed
223{ 330{
224 EV_WATCHER (ev_embed) 331 EV_WATCHER (ev_embed)
225 332
226 struct ev_io io; /* private */
227 struct ev_loop *loop; /* ro */ 333 struct ev_loop *other; /* ro */
228}; 334 ev_io io; /* private */
335 ev_prepare prepare; /* private */
336 ev_check check; /* unused */
337 ev_timer timer; /* unused */
338 ev_periodic periodic; /* unused */
339 ev_idle idle; /* unused */
340 ev_fork fork; /* private */
341} ev_embed;
342#endif
343
344#if EV_ASYNC_ENABLE
345/* invoked when somebody calls ev_async_send on the watcher */
346/* revent EV_ASYNC */
347typedef struct ev_async
348{
349 EV_WATCHER (ev_async)
350
351 EV_ATOMIC_T sent; /* private */
352} ev_async;
353
354# define ev_async_pending(w) ((w)->sent + 0)
229#endif 355#endif
230 356
231/* the presence of this union forces similar struct layout */ 357/* the presence of this union forces similar struct layout */
232union ev_any_watcher 358union ev_any_watcher
233{ 359{
… …
235 struct ev_watcher_list wl; 361 struct ev_watcher_list wl;
236 362
237 struct ev_io io; 363 struct ev_io io;
238 struct ev_timer timer; 364 struct ev_timer timer;
239 struct ev_periodic periodic; 365 struct ev_periodic periodic;
366 struct ev_signal signal;
367 struct ev_child child;
368#if EV_STAT_ENABLE
369 struct ev_stat stat;
370#endif
371#if EV_IDLE_ENABLE
240 struct ev_idle idle; 372 struct ev_idle idle;
373#endif
241 struct ev_prepare prepare; 374 struct ev_prepare prepare;
242 struct ev_check check; 375 struct ev_check check;
243 struct ev_signal signal; 376#if EV_FORK_ENABLE
244 struct ev_child child; 377 struct ev_fork fork;
378#endif
379#if EV_EMBED_ENABLE
245 struct ev_embed embed; 380 struct ev_embed embed;
381#endif
382#if EV_ASYNC_ENABLE
383 struct ev_async async;
384#endif
246}; 385};
247 386
248/* bits for ev_default_loop and ev_loop_new */ 387/* bits for ev_default_loop and ev_loop_new */
249/* the default */ 388/* the default */
250#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */ 389#define EVFLAG_AUTO 0x00000000U /* not quite a mask */
251/* flag bits */ 390/* flag bits */
252#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */ 391#define EVFLAG_NOENV 0x01000000U /* do NOT consult environment */
392#define EVFLAG_FORKCHECK 0x02000000U /* check for a fork in each iteration */
253/* method bits to be ored together */ 393/* method bits to be ored together */
254#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */ 394#define EVBACKEND_SELECT 0x00000001U /* about anywhere */
255#define EVBACKEND_POLL 0x00000002UL /* !win */ 395#define EVBACKEND_POLL 0x00000002U /* !win */
256#define EVBACKEND_EPOLL 0x00000004UL /* linux */ 396#define EVBACKEND_EPOLL 0x00000004U /* linux */
257#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */ 397#define EVBACKEND_KQUEUE 0x00000008U /* bsd */
258#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */ 398#define EVBACKEND_DEVPOLL 0x00000010U /* solaris 8 */ /* NYI */
259#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */ 399#define EVBACKEND_PORT 0x00000020U /* solaris 10 */
260 400
261#if EV_PROTOTYPES 401#if EV_PROTOTYPES
262int ev_version_major (void); 402int ev_version_major (void);
263int ev_version_minor (void); 403int ev_version_minor (void);
264 404
265unsigned int ev_supported_backends (void); 405unsigned int ev_supported_backends (void);
266unsigned int ev_recommended_backends (void); 406unsigned int ev_recommended_backends (void);
267unsigned int ev_embeddable_backends (void); 407unsigned int ev_embeddable_backends (void);
268 408
269ev_tstamp ev_time (void); 409ev_tstamp ev_time (void);
410void ev_sleep (ev_tstamp delay); /* sleep for a while */
270 411
271/* Sets the allocation function to use, works like realloc. 412/* Sets the allocation function to use, works like realloc.
272 * It is used to allocate and free memory. 413 * It is used to allocate and free memory.
273 * If it returns zero when memory needs to be allocated, the library might abort 414 * If it returns zero when memory needs to be allocated, the library might abort
274 * or take some potentially destructive action. 415 * or take some potentially destructive action.
… …
280 * retryable syscall error 421 * retryable syscall error
281 * (such as failed select, poll, epoll_wait) 422 * (such as failed select, poll, epoll_wait)
282 */ 423 */
283void ev_set_syserr_cb (void (*cb)(const char *msg)); 424void ev_set_syserr_cb (void (*cb)(const char *msg));
284 425
285# if EV_MULTIPLICITY 426#if EV_MULTIPLICITY
427EV_INLINE struct ev_loop *
428ev_default_loop_uc (void)
429{
430 extern struct ev_loop *ev_default_loop_ptr;
431
432 return ev_default_loop_ptr;
433}
434
286/* the default loop is the only one that handles signals and child watchers */ 435/* the default loop is the only one that handles signals and child watchers */
287/* you can call this as often as you like */ 436/* you can call this as often as you like */
288static struct ev_loop * 437EV_INLINE struct ev_loop *
289ev_default_loop (unsigned int flags) 438ev_default_loop (unsigned int flags)
290{ 439{
291 extern struct ev_loop *ev_default_loop_ptr; 440 struct ev_loop *loop = ev_default_loop_uc ();
441
442 if (!loop)
443 {
292 extern struct ev_loop *ev_default_loop_init (unsigned int flags); 444 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
293 445
294 if (!ev_default_loop_ptr)
295 ev_default_loop_init (flags); 446 loop = ev_default_loop_init (flags);
447 }
296 448
297 return ev_default_loop_ptr; 449 return loop;
298} 450}
299 451
300/* create and destroy alternative loops that don't handle signals */ 452/* create and destroy alternative loops that don't handle signals */
301struct ev_loop *ev_loop_new (unsigned int flags); 453struct ev_loop *ev_loop_new (unsigned int flags);
302void ev_loop_destroy (EV_P); 454void ev_loop_destroy (EV_P);
303void ev_loop_fork (EV_P); 455void ev_loop_fork (EV_P);
456void ev_loop_verify (EV_P);
304 457
305ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 458ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
459void ev_now_update (EV_P);
306 460
307# else 461#else
308 462
309int ev_default_loop (unsigned int flags); /* returns true when successful */ 463int ev_default_loop (unsigned int flags); /* returns true when successful */
310 464
311static ev_tstamp 465EV_INLINE ev_tstamp
312ev_now (void) 466ev_now (void)
313{ 467{
314 extern ev_tstamp ev_rt_now; 468 extern ev_tstamp ev_rt_now;
315 469
316 return ev_rt_now; 470 return ev_rt_now;
317} 471}
472#endif /* multiplicity */
473
474EV_INLINE int
475ev_is_default_loop (EV_P)
476{
477#if EV_MULTIPLICITY
478 extern struct ev_loop *ev_default_loop_ptr;
479
480 return !!(EV_A == ev_default_loop_ptr);
481#else
482 return 1;
318# endif 483#endif
484}
319 485
320void ev_default_destroy (void); /* destroy the default loop */ 486void ev_default_destroy (void); /* destroy the default loop */
321/* this needs to be called after fork, to duplicate the default loop */ 487/* 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 */ 488/* 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 */ 489/* you can call it in either the parent or the child */
324/* you can actually call it at any time, anywhere :) */ 490/* you can actually call it at any time, anywhere :) */
325void ev_default_fork (void); 491void ev_default_fork (void);
326 492
327unsigned int ev_backend (EV_P); 493unsigned int ev_backend (EV_P); /* backend in use by loop */
328#endif 494unsigned int ev_loop_count (EV_P); /* number of loop iterations */
495#endif /* prototypes */
329 496
330#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 497#define EVLOOP_NONBLOCK 1 /* do not block/wait */
331#define EVLOOP_ONESHOT 2 /* block *once* only */ 498#define EVLOOP_ONESHOT 2 /* block *once* only */
332#define EVUNLOOP_CANCEL 0 /* undo unloop */ 499#define EVUNLOOP_CANCEL 0 /* undo unloop */
333#define EVUNLOOP_ONE 1 /* unloop once */ 500#define EVUNLOOP_ONE 1 /* unloop once */
334#define EVUNLOOP_ALL 2 /* unloop all loops */ 501#define EVUNLOOP_ALL 2 /* unloop all loops */
335 502
336#if EV_PROTOTYPES 503#if EV_PROTOTYPES
337void ev_loop (EV_P_ int flags); 504void ev_loop (EV_P_ int flags);
338void 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 */ 505void 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 */
506
507void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
508void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
339 509
340/* 510/*
341 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher 511 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
342 * keeps one reference. if you have a long-runing watcher you never unregister that 512 * keeps one reference. if you have a long-runing watcher you never unregister that
343 * should not keep ev_loop from running, unref() after starting, and ref() before stopping. 513 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
… …
350void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 520void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
351#endif 521#endif
352 522
353/* these may evaluate ev multiple times, and the other arguments at most once */ 523/* these may evaluate ev multiple times, and the other arguments at most once */
354/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ 524/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
355#define ev_init(ev,cb_) do { \ 525#define ev_init(ev,cb_) do { \
356 ((struct ev_watcher *)(void *)(ev))->active = \ 526 ((ev_watcher *)(void *)(ev))->active = \
357 ((struct ev_watcher *)(void *)(ev))->pending = \ 527 ((ev_watcher *)(void *)(ev))->pending = \
358 ((struct ev_watcher *)(void *)(ev))->priority = 0; \ 528 ((ev_watcher *)(void *)(ev))->priority = 0; \
359 ev_set_cb ((ev), cb_); \ 529 ev_set_cb ((ev), cb_); \
360} while (0) 530} while (0)
361 531
362#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 532#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0)
363#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 533#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
364#define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) 534#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
365#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 535#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
536#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
537#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
366#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 538#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
367#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 539#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
368#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 540#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
369#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
370#define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0) 541#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
542#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
543#define ev_async_set(ev) do { (ev)->sent = 0; } while (0)
371 544
372#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 545#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
373#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 546#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
374#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) 547#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
375#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) 548#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
549#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
550#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
376#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 551#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
377#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 552#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
378#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 553#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
379#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
380#define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0) 554#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
555#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
556#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
381 557
382#define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 558#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
383#define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 559#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
384 560
385#define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ 561#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
386#define ev_cb(ev) (ev)->cb /* rw */ 562#define ev_cb(ev) (ev)->cb /* rw */
387#define ev_set_priority(ev,pri) ev_priority (ev) = (pri) 563#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
564
565#define ev_periodic_at(ev) (((ev_watcher_time *)(ev))->at + 0.)
388 566
389#ifndef ev_set_cb 567#ifndef ev_set_cb
390# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 568# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
391#endif 569#endif
392 570
… …
397/* feeds an event into a watcher as if the event actually occured */ 575/* feeds an event into a watcher as if the event actually occured */
398/* accepts any ev_watcher type */ 576/* accepts any ev_watcher type */
399void ev_feed_event (EV_P_ void *w, int revents); 577void ev_feed_event (EV_P_ void *w, int revents);
400void ev_feed_fd_event (EV_P_ int fd, int revents); 578void ev_feed_fd_event (EV_P_ int fd, int revents);
401void ev_feed_signal_event (EV_P_ int signum); 579void ev_feed_signal_event (EV_P_ int signum);
580void ev_invoke (EV_P_ void *w, int revents);
581int ev_clear_pending (EV_P_ void *w);
402 582
403void ev_io_start (EV_P_ struct ev_io *w); 583void ev_io_start (EV_P_ ev_io *w);
404void ev_io_stop (EV_P_ struct ev_io *w); 584void ev_io_stop (EV_P_ ev_io *w);
405 585
406void ev_timer_start (EV_P_ struct ev_timer *w); 586void ev_timer_start (EV_P_ ev_timer *w);
407void ev_timer_stop (EV_P_ struct ev_timer *w); 587void ev_timer_stop (EV_P_ ev_timer *w);
408/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 588/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
409void ev_timer_again (EV_P_ struct ev_timer *w); 589void ev_timer_again (EV_P_ ev_timer *w);
410 590
411#if EV_PERIODICS 591#if EV_PERIODIC_ENABLE
412void ev_periodic_start (EV_P_ struct ev_periodic *w); 592void ev_periodic_start (EV_P_ ev_periodic *w);
413void ev_periodic_stop (EV_P_ struct ev_periodic *w); 593void ev_periodic_stop (EV_P_ ev_periodic *w);
414void ev_periodic_again (EV_P_ struct ev_periodic *w); 594void ev_periodic_again (EV_P_ ev_periodic *w);
415#endif 595#endif
416
417void ev_idle_start (EV_P_ struct ev_idle *w);
418void ev_idle_stop (EV_P_ struct ev_idle *w);
419
420void ev_prepare_start (EV_P_ struct ev_prepare *w);
421void ev_prepare_stop (EV_P_ struct ev_prepare *w);
422
423void ev_check_start (EV_P_ struct ev_check *w);
424void ev_check_stop (EV_P_ struct ev_check *w);
425 596
426/* only supported in the default loop */ 597/* only supported in the default loop */
427void ev_signal_start (EV_P_ struct ev_signal *w); 598void ev_signal_start (EV_P_ ev_signal *w);
428void ev_signal_stop (EV_P_ struct ev_signal *w); 599void ev_signal_stop (EV_P_ ev_signal *w);
429 600
430/* only supported in the default loop */ 601/* only supported in the default loop */
431void ev_child_start (EV_P_ struct ev_child *w); 602void ev_child_start (EV_P_ ev_child *w);
432void ev_child_stop (EV_P_ struct ev_child *w); 603void ev_child_stop (EV_P_ ev_child *w);
433 604
434# if EV_MULTIPLICITY 605# if EV_STAT_ENABLE
606void ev_stat_start (EV_P_ ev_stat *w);
607void ev_stat_stop (EV_P_ ev_stat *w);
608void ev_stat_stat (EV_P_ ev_stat *w);
609# endif
610
611# if EV_IDLE_ENABLE
612void ev_idle_start (EV_P_ ev_idle *w);
613void ev_idle_stop (EV_P_ ev_idle *w);
614# endif
615
616void ev_prepare_start (EV_P_ ev_prepare *w);
617void ev_prepare_stop (EV_P_ ev_prepare *w);
618
619void ev_check_start (EV_P_ ev_check *w);
620void ev_check_stop (EV_P_ ev_check *w);
621
622# if EV_FORK_ENABLE
623void ev_fork_start (EV_P_ ev_fork *w);
624void ev_fork_stop (EV_P_ ev_fork *w);
625# endif
626
627# if EV_EMBED_ENABLE
435/* only supported when loop to be embedded is in fact embeddable */ 628/* only supported when loop to be embedded is in fact embeddable */
436void ev_embed_start (EV_P_ struct ev_embed *w); 629void ev_embed_start (EV_P_ ev_embed *w);
437void ev_embed_stop (EV_P_ struct ev_embed *w); 630void ev_embed_stop (EV_P_ ev_embed *w);
631void ev_embed_sweep (EV_P_ ev_embed *w);
632# endif
633
634# if EV_ASYNC_ENABLE
635void ev_async_start (EV_P_ ev_async *w);
636void ev_async_stop (EV_P_ ev_async *w);
637void ev_async_send (EV_P_ ev_async *w);
438# endif 638# endif
439 639
440#endif 640#endif
441 641
442#ifdef __cplusplus 642#ifdef __cplusplus

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