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Comparing libev/ev.h (file contents):
Revision 1.52 by root, Mon Nov 12 00:31:08 2007 UTC vs.
Revision 1.91 by root, Fri Jan 25 15:45:09 2008 UTC

1/* 1/*
2 * libev native API header
3 *
2 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007 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/*****************************************************************************/
82
83#if EV_STAT_ENABLE
84# include <sys/stat.h>
53#endif 85#endif
54 86
55/* support multiple event loops? */ 87/* support multiple event loops? */
56#if EV_MULTIPLICITY 88#if EV_MULTIPLICITY
57struct ev_loop; 89struct ev_loop;
58# define EV_P struct ev_loop *loop 90# define EV_P struct ev_loop *loop
59# define EV_P_ EV_P, 91# define EV_P_ EV_P,
60# define EV_A loop 92# define EV_A loop
61# define EV_A_ EV_A, 93# define EV_A_ EV_A,
62# define EV_DEFAULT_A ev_default_loop (0) 94# define EV_DEFAULT ev_default_loop (0)
63# define EV_DEFAULT_A_ EV_DEFAULT_A, 95# define EV_DEFAULT_ EV_DEFAULT,
64#else 96#else
65# define EV_P void 97# define EV_P void
66# define EV_P_ 98# define EV_P_
67# define EV_A 99# define EV_A
68# define EV_A_ 100# define EV_A_
101# define EV_DEFAULT
69# define EV_DEFAULT_A 102# define EV_DEFAULT_
70# define EV_DEFAULT_A_ 103
104# undef EV_EMBED_ENABLE
71#endif 105#endif
72 106
73/* eventmask, revents, events... */ 107/* eventmask, revents, events... */
74#define EV_UNDEF -1 /* guaranteed to be invalid */ 108#define EV_UNDEF -1L /* guaranteed to be invalid */
75#define EV_NONE 0x00
76#define EV_READ 0x01 /* io only */ 109#define EV_NONE 0x00L /* no events */
110#define EV_READ 0x01L /* ev_io detected read will not block */
111#define EV_WRITE 0x02L /* ev_io detected write will not block */
77#define EV_WRITE 0x02 /* io only */ 112#define EV_IOFDSET 0x80L /* internal use only */
78#define EV_TIMEOUT 0x000100 /* timer only */ 113#define EV_TIMEOUT 0x00000100L /* timer timed out */
79#define EV_PERIODIC 0x000200 /* periodic timer only */ 114#define EV_PERIODIC 0x00000200L /* periodic timer timed out */
80#define EV_SIGNAL 0x000400 /* signal only */ 115#define EV_SIGNAL 0x00000400L /* signal was received */
81#define EV_IDLE 0x000800 /* idle only */
82#define EV_CHECK 0x001000 /* check only */
83#define EV_PREPARE 0x002000 /* prepare only */
84#define EV_CHILD 0x004000 /* child/pid only */ 116#define EV_CHILD 0x00000800L /* child/pid had status change */
117#define EV_STAT 0x00001000L /* stat data changed */
118#define EV_IDLE 0x00002000L /* event loop is idling */
119#define EV_PREPARE 0x00004000L /* event loop about to poll */
120#define EV_CHECK 0x00008000L /* event loop finished poll */
121#define EV_EMBED 0x00010000L /* embedded event loop needs sweep */
122#define EV_FORK 0x00020000L /* event loop resumed in child */
85#define EV_ERROR 0x800000 /* sent when an error occurs */ 123#define EV_ERROR 0x80000000L /* sent when an error occurs */
86 124
87/* can be used to add custom fields to all watchers, while losing binary compatibility */ 125/* can be used to add custom fields to all watchers, while losing binary compatibility */
88#ifndef EV_COMMON 126#ifndef EV_COMMON
89# define EV_COMMON void *data; 127# define EV_COMMON void *data;
90#endif 128#endif
91#ifndef EV_PROTOTYPES 129#ifndef EV_PROTOTYPES
92# define EV_PROTOTYPES 1 130# define EV_PROTOTYPES 1
93#endif 131#endif
94 132
95#define EV_VERSION_MAJOR 1 133#define EV_VERSION_MAJOR 3
96#define EV_VERSION_MINOR 1 134#define EV_VERSION_MINOR 0
97 135
98#ifndef EV_CB_DECLARE 136#ifndef EV_CB_DECLARE
99# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); 137# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
100#endif 138#endif
101#ifndef EV_CB_INVOKE 139#ifndef EV_CB_INVOKE
124#define EV_WATCHER_TIME(type) \ 162#define EV_WATCHER_TIME(type) \
125 EV_WATCHER (type) \ 163 EV_WATCHER (type) \
126 ev_tstamp at; /* private */ 164 ev_tstamp at; /* private */
127 165
128/* base class, nothing to see here unless you subclass */ 166/* base class, nothing to see here unless you subclass */
129struct ev_watcher 167typedef struct ev_watcher
130{ 168{
131 EV_WATCHER (ev_watcher) 169 EV_WATCHER (ev_watcher)
132}; 170} ev_watcher;
133 171
134/* base class, nothing to see here unless you subclass */ 172/* base class, nothing to see here unless you subclass */
135struct ev_watcher_list 173typedef struct ev_watcher_list
136{ 174{
137 EV_WATCHER_LIST (ev_watcher_list) 175 EV_WATCHER_LIST (ev_watcher_list)
138}; 176} ev_watcher_list;
139 177
140/* base class, nothing to see here unless you subclass */ 178/* base class, nothing to see here unless you subclass */
141struct ev_watcher_time 179typedef struct ev_watcher_time
142{ 180{
143 EV_WATCHER_TIME (ev_watcher_time) 181 EV_WATCHER_TIME (ev_watcher_time)
144}; 182} ev_watcher_time;
183
184/* invoked when fd is either EV_READable or EV_WRITEable */
185/* revent EV_READ, EV_WRITE */
186typedef struct ev_io
187{
188 EV_WATCHER_LIST (ev_io)
189
190 int fd; /* ro */
191 int events; /* ro */
192} ev_io;
145 193
146/* invoked after a specific time, repeatable (based on monotonic clock) */ 194/* invoked after a specific time, repeatable (based on monotonic clock) */
147/* revent EV_TIMEOUT */ 195/* revent EV_TIMEOUT */
148struct ev_timer 196typedef struct ev_timer
149{ 197{
150 EV_WATCHER_TIME (ev_timer) 198 EV_WATCHER_TIME (ev_timer)
151 199
152 ev_tstamp repeat; /* rw */ 200 ev_tstamp repeat; /* rw */
153}; 201} ev_timer;
154 202
155/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 203/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
156/* revent EV_PERIODIC */ 204/* revent EV_PERIODIC */
157struct ev_periodic 205typedef struct ev_periodic
158{ 206{
159 EV_WATCHER_TIME (ev_periodic) 207 EV_WATCHER_TIME (ev_periodic)
160 208
209 ev_tstamp offset; /* rw */
161 ev_tstamp interval; /* rw */ 210 ev_tstamp interval; /* rw */
162 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ 211 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
163}; 212} ev_periodic;
164
165/* invoked when fd is either EV_READable or EV_WRITEable */
166/* revent EV_READ, EV_WRITE */
167struct ev_io
168{
169 EV_WATCHER_LIST (ev_io)
170
171 int fd; /* ro */
172 int events; /* ro */
173};
174 213
175/* invoked when the given signal has been received */ 214/* invoked when the given signal has been received */
176/* revent EV_SIGNAL */ 215/* revent EV_SIGNAL */
177struct ev_signal 216typedef struct ev_signal
178{ 217{
179 EV_WATCHER_LIST (ev_signal) 218 EV_WATCHER_LIST (ev_signal)
180 219
181 int signum; /* ro */ 220 int signum; /* ro */
182}; 221} ev_signal;
183 222
223/* invoked when sigchld is received and waitpid indicates the given pid */
224/* revent EV_CHILD */
225/* does not support priorities */
226typedef struct ev_child
227{
228 EV_WATCHER_LIST (ev_child)
229
230 int flags; /* private */
231 int pid; /* ro */
232 int rpid; /* rw, holds the received pid */
233 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
234} ev_child;
235
236#if EV_STAT_ENABLE
237/* st_nlink = 0 means missing file or other error */
238# ifdef _WIN32
239typedef struct _stati64 ev_statdata;
240# else
241typedef struct stat ev_statdata;
242# endif
243
244/* invoked each time the stat data changes for a given path */
245/* revent EV_STAT */
246typedef struct ev_stat
247{
248 EV_WATCHER_LIST (ev_stat)
249
250 ev_timer timer; /* private */
251 ev_tstamp interval; /* ro */
252 const char *path; /* ro */
253 ev_statdata prev; /* ro */
254 ev_statdata attr; /* ro */
255
256 int wd; /* wd for inotify, fd for kqueue */
257} ev_stat;
258#endif
259
260#if EV_IDLE_ENABLE
184/* invoked when the nothing else needs to be done, keeps the process from blocking */ 261/* invoked when the nothing else needs to be done, keeps the process from blocking */
185/* revent EV_IDLE */ 262/* revent EV_IDLE */
186struct ev_idle 263typedef struct ev_idle
187{ 264{
188 EV_WATCHER (ev_idle) 265 EV_WATCHER (ev_idle)
189}; 266} ev_idle;
267#endif
190 268
191/* invoked for each run of the mainloop, just before the blocking call */ 269/* invoked for each run of the mainloop, just before the blocking call */
192/* you can still change events in any way you like */ 270/* you can still change events in any way you like */
193/* revent EV_PREPARE */ 271/* revent EV_PREPARE */
194struct ev_prepare 272typedef struct ev_prepare
195{ 273{
196 EV_WATCHER (ev_prepare) 274 EV_WATCHER (ev_prepare)
197}; 275} ev_prepare;
198 276
199/* invoked for each run of the mainloop, just after the blocking call */ 277/* invoked for each run of the mainloop, just after the blocking call */
200/* revent EV_CHECK */ 278/* revent EV_CHECK */
201struct ev_check 279typedef struct ev_check
202{ 280{
203 EV_WATCHER (ev_check) 281 EV_WATCHER (ev_check)
204}; 282} ev_check;
205 283
206/* invoked when sigchld is received and waitpid indicates the givne pid */ 284#if EV_FORK_ENABLE
207/* revent EV_CHILD */ 285/* the callback gets invoked before check in the child process when a fork was detected */
208/* does not support priorities */ 286typedef struct ev_fork
209struct ev_child
210{ 287{
211 EV_WATCHER_LIST (ev_child) 288 EV_WATCHER (ev_fork)
289} ev_fork;
290#endif
212 291
213 int pid; /* ro */ 292#if EV_EMBED_ENABLE
214 int rpid; /* rw, holds the received pid */ 293/* used to embed an event loop inside another */
215 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ 294/* the callback gets invoked when the event loop has handled events, and can be 0 */
216}; 295typedef struct ev_embed
296{
297 EV_WATCHER (ev_embed)
298
299 struct ev_loop *other; /* ro */
300 ev_io io; /* private */
301 ev_prepare prepare; /* private */
302 ev_check check; /* unused */
303 ev_timer timer; /* unused */
304 ev_periodic periodic; /* unused */
305 ev_idle idle; /* unused */
306 ev_fork fork; /* unused */
307} ev_embed;
308#endif
217 309
218/* the presence of this union forces similar struct layout */ 310/* the presence of this union forces similar struct layout */
219union ev_any_watcher 311union ev_any_watcher
220{ 312{
221 struct ev_watcher w; 313 struct ev_watcher w;
222 struct ev_watcher_list wl; 314 struct ev_watcher_list wl;
223 315
224 struct ev_io io; 316 struct ev_io io;
225 struct ev_timer timer; 317 struct ev_timer timer;
226 struct ev_periodic periodic; 318 struct ev_periodic periodic;
319 struct ev_signal signal;
320 struct ev_child child;
321#if EV_STAT_ENABLE
322 struct ev_stat stat;
323#endif
324#if EV_IDLE_ENABLE
227 struct ev_idle idle; 325 struct ev_idle idle;
326#endif
228 struct ev_prepare prepare; 327 struct ev_prepare prepare;
229 struct ev_check check; 328 struct ev_check check;
230 struct ev_signal signal; 329#if EV_FORK_ENABLE
231 struct ev_child child; 330 struct ev_fork fork;
331#endif
332#if EV_EMBED_ENABLE
333 struct ev_embed embed;
334#endif
232}; 335};
233 336
234#define EVMETHOD_AUTO 0 /* consults environment */ 337/* bits for ev_default_loop and ev_loop_new */
235#define EVMETHOD_SELECT 1 338/* the default */
236#define EVMETHOD_POLL 2 339#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */
237#define EVMETHOD_EPOLL 4 340/* flag bits */
238#define EVMETHOD_KQUEUE 8 341#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */
239#define EVMETHOD_DEVPOLL 16 /* NYI */ 342#define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */
240#define EVMETHOD_PORT 32 /* NYI */ 343/* method bits to be ored together */
241#define EVMETHOD_WIN32 64 /* NYI */ 344#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */
242#define EVMETHOD_ANY ~0 /* any method, do not consult env */ 345#define EVBACKEND_POLL 0x00000002UL /* !win */
346#define EVBACKEND_EPOLL 0x00000004UL /* linux */
347#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */
348#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */
349#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */
243 350
244#if EV_PROTOTYPES 351#if EV_PROTOTYPES
245int ev_version_major (void); 352int ev_version_major (void);
246int ev_version_minor (void); 353int ev_version_minor (void);
247 354
355unsigned int ev_supported_backends (void);
356unsigned int ev_recommended_backends (void);
357unsigned int ev_embeddable_backends (void);
358
248ev_tstamp ev_time (void); 359ev_tstamp ev_time (void);
360void ev_sleep (ev_tstamp delay); /* sleep for a while */
249 361
250/* Sets the allocation function to use, works like realloc. 362/* Sets the allocation function to use, works like realloc.
251 * It is used to allocate and free memory. 363 * It is used to allocate and free memory.
252 * If it returns zero when memory needs to be allocated, the library might abort 364 * If it returns zero when memory needs to be allocated, the library might abort
253 * or take some potentially destructive action. 365 * or take some potentially destructive action.
262void ev_set_syserr_cb (void (*cb)(const char *msg)); 374void ev_set_syserr_cb (void (*cb)(const char *msg));
263 375
264# if EV_MULTIPLICITY 376# if EV_MULTIPLICITY
265/* the default loop is the only one that handles signals and child watchers */ 377/* the default loop is the only one that handles signals and child watchers */
266/* you can call this as often as you like */ 378/* you can call this as often as you like */
267struct ev_loop *ev_default_loop (int methods); /* returns default loop */ 379static struct ev_loop *
380ev_default_loop (unsigned int flags)
381{
382 extern struct ev_loop *ev_default_loop_ptr;
383 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
384
385 if (!ev_default_loop_ptr)
386 ev_default_loop_init (flags);
387
388 return ev_default_loop_ptr;
389}
268 390
269/* create and destroy alternative loops that don't handle signals */ 391/* create and destroy alternative loops that don't handle signals */
270struct ev_loop *ev_loop_new (int methods); 392struct ev_loop *ev_loop_new (unsigned int flags);
271void ev_loop_destroy (EV_P); 393void ev_loop_destroy (EV_P);
272void ev_loop_fork (EV_P); 394void ev_loop_fork (EV_P);
273 395
274ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 396ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
275 397
276# else 398# else
277 399
278int ev_default_loop (int methods); /* returns true when successful */ 400int ev_default_loop (unsigned int flags); /* returns true when successful */
279 401
280static ev_tstamp 402static ev_tstamp
281ev_now (void) 403ev_now (void)
282{ 404{
283 extern ev_tstamp ev_rt_now; 405 extern ev_tstamp ev_rt_now;
291/* if you create alternative loops you have to call ev_loop_fork on them */ 413/* if you create alternative loops you have to call ev_loop_fork on them */
292/* you can call it in either the parent or the child */ 414/* you can call it in either the parent or the child */
293/* you can actually call it at any time, anywhere :) */ 415/* you can actually call it at any time, anywhere :) */
294void ev_default_fork (void); 416void ev_default_fork (void);
295 417
296int ev_method (EV_P); 418unsigned int ev_backend (EV_P); /* backend in use by loop */
419unsigned int ev_loop_count (EV_P); /* number of loop iterations */
297#endif 420#endif
298 421
299#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 422#define EVLOOP_NONBLOCK 1 /* do not block/wait */
300#define EVLOOP_ONESHOT 2 /* block *once* only */ 423#define EVLOOP_ONESHOT 2 /* block *once* only */
424#define EVUNLOOP_CANCEL 0 /* undo unloop */
301#define EVUNLOOP_ONCE 1 /* unloop once */ 425#define EVUNLOOP_ONE 1 /* unloop once */
302#define EVUNLOOP_ALL 2 /* unloop all loops */ 426#define EVUNLOOP_ALL 2 /* unloop all loops */
303 427
304#if EV_PROTOTYPES 428#if EV_PROTOTYPES
305void ev_loop (EV_P_ int flags); 429void ev_loop (EV_P_ int flags);
306void 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 */ 430void 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 */
431
432void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
433void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
307 434
308/* 435/*
309 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher 436 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
310 * keeps one reference. if you have a long-runing watcher you never unregister that 437 * keeps one reference. if you have a long-runing watcher you never unregister that
311 * should not keep ev_loop from running, unref() after starting, and ref() before stopping. 438 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
318void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 445void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
319#endif 446#endif
320 447
321/* these may evaluate ev multiple times, and the other arguments at most once */ 448/* these may evaluate ev multiple times, and the other arguments at most once */
322/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ 449/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
323#define ev_init(ev,cb_) do { \ 450#define ev_init(ev,cb_) do { \
324 ((struct ev_watcher *)(void *)(ev))->active = \ 451 ((ev_watcher *)(void *)(ev))->active = \
325 ((struct ev_watcher *)(void *)(ev))->pending = \ 452 ((ev_watcher *)(void *)(ev))->pending = \
326 ((struct ev_watcher *)(void *)(ev))->priority = 0; \ 453 ((ev_watcher *)(void *)(ev))->priority = 0; \
327 ev_set_cb ((ev), cb_); \ 454 ev_set_cb ((ev), cb_); \
328} while (0) 455} while (0)
329 456
330#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 457#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0)
331#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 458#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
332#define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) 459#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
333#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 460#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
461#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
462#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
334#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 463#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
335#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 464#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
336#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 465#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
337#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) 466#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
467#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
338 468
339#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 469#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
340#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 470#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
341#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) 471#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
342#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) 472#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
473#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
474#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
343#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 475#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
344#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 476#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
345#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 477#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
346#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) 478#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
479#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
347 480
348#define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 481#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
349#define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 482#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
350 483
351#define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ 484#define ev_priority(ev) ((((ev_watcher *)(void *)(ev))->priority) + 0)
352#define ev_cb(ev) (ev)->cb /* rw */ 485#define ev_cb(ev) (ev)->cb /* rw */
353#define ev_set_priority(ev,pri) ev_priority (ev) = (pri) 486#define ev_set_priority(ev,pri) ((ev_watcher *)(void *)(ev))->priority = (pri)
354 487
355#ifndef ev_set_cb 488#ifndef ev_set_cb
356# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 489# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
357#endif 490#endif
358 491
363/* feeds an event into a watcher as if the event actually occured */ 496/* feeds an event into a watcher as if the event actually occured */
364/* accepts any ev_watcher type */ 497/* accepts any ev_watcher type */
365void ev_feed_event (EV_P_ void *w, int revents); 498void ev_feed_event (EV_P_ void *w, int revents);
366void ev_feed_fd_event (EV_P_ int fd, int revents); 499void ev_feed_fd_event (EV_P_ int fd, int revents);
367void ev_feed_signal_event (EV_P_ int signum); 500void ev_feed_signal_event (EV_P_ int signum);
501void ev_invoke (EV_P_ void *w, int revents);
502int ev_clear_pending (EV_P_ void *w);
368 503
369void ev_io_start (EV_P_ struct ev_io *w); 504void ev_io_start (EV_P_ ev_io *w);
370void ev_io_stop (EV_P_ struct ev_io *w); 505void ev_io_stop (EV_P_ ev_io *w);
371 506
372void ev_timer_start (EV_P_ struct ev_timer *w); 507void ev_timer_start (EV_P_ ev_timer *w);
373void ev_timer_stop (EV_P_ struct ev_timer *w); 508void ev_timer_stop (EV_P_ ev_timer *w);
374/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 509/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
375void ev_timer_again (EV_P_ struct ev_timer *w); 510void ev_timer_again (EV_P_ ev_timer *w);
376 511
377#if EV_PERIODICS 512#if EV_PERIODIC_ENABLE
378void ev_periodic_start (EV_P_ struct ev_periodic *w); 513void ev_periodic_start (EV_P_ ev_periodic *w);
379void ev_periodic_stop (EV_P_ struct ev_periodic *w); 514void ev_periodic_stop (EV_P_ ev_periodic *w);
380void ev_periodic_again (EV_P_ struct ev_periodic *w); 515void ev_periodic_again (EV_P_ ev_periodic *w);
381#endif 516#endif
382
383void ev_idle_start (EV_P_ struct ev_idle *w);
384void ev_idle_stop (EV_P_ struct ev_idle *w);
385
386void ev_prepare_start (EV_P_ struct ev_prepare *w);
387void ev_prepare_stop (EV_P_ struct ev_prepare *w);
388
389void ev_check_start (EV_P_ struct ev_check *w);
390void ev_check_stop (EV_P_ struct ev_check *w);
391 517
392/* only supported in the default loop */ 518/* only supported in the default loop */
393void ev_signal_start (EV_P_ struct ev_signal *w); 519void ev_signal_start (EV_P_ ev_signal *w);
394void ev_signal_stop (EV_P_ struct ev_signal *w); 520void ev_signal_stop (EV_P_ ev_signal *w);
395 521
396/* only supported in the default loop */ 522/* only supported in the default loop */
397void ev_child_start (EV_P_ struct ev_child *w); 523void ev_child_start (EV_P_ ev_child *w);
398void ev_child_stop (EV_P_ struct ev_child *w); 524void ev_child_stop (EV_P_ ev_child *w);
525
526# if EV_STAT_ENABLE
527void ev_stat_start (EV_P_ ev_stat *w);
528void ev_stat_stop (EV_P_ ev_stat *w);
529void ev_stat_stat (EV_P_ ev_stat *w);
530# endif
531
532# if EV_IDLE_ENABLE
533void ev_idle_start (EV_P_ ev_idle *w);
534void ev_idle_stop (EV_P_ ev_idle *w);
535# endif
536
537void ev_prepare_start (EV_P_ ev_prepare *w);
538void ev_prepare_stop (EV_P_ ev_prepare *w);
539
540void ev_check_start (EV_P_ ev_check *w);
541void ev_check_stop (EV_P_ ev_check *w);
542
543# if EV_FORK_ENABLE
544void ev_fork_start (EV_P_ ev_fork *w);
545void ev_fork_stop (EV_P_ ev_fork *w);
546# endif
547
548# if EV_EMBED_ENABLE
549/* only supported when loop to be embedded is in fact embeddable */
550void ev_embed_start (EV_P_ ev_embed *w);
551void ev_embed_stop (EV_P_ ev_embed *w);
552void ev_embed_sweep (EV_P_ ev_embed *w);
553# endif
554
399#endif 555#endif
400 556
401#ifdef __cplusplus 557#ifdef __cplusplus
402} 558}
403#endif 559#endif

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