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Comparing libev/ev.h (file contents):
Revision 1.15 by root, Wed Oct 31 22:16:36 2007 UTC vs.
Revision 1.194 by root, Mon Jul 1 21:47:42 2019 UTC

1/* 1/*
2 * libev native API header
3 *
2 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 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:
8 * 9 *
9 * * Redistributions of source code must retain the above copyright 10 * 1. Redistributions of source code must retain the above copyright notice,
10 * notice, this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
11 * 12 *
12 * * Redistributions in binary form must reproduce the above 13 * 2. Redistributions in binary form must reproduce the above copyright
13 * copyright notice, this list of conditions and the following 14 * notice, this list of conditions and the following disclaimer in the
14 * disclaimer in the documentation and/or other materials provided 15 * documentation and/or other materials provided with the distribution.
15 * with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL.
28 */ 38 */
29 39
30#ifndef EV_H 40#ifndef EV_H_
31#define EV_H 41#define EV_H_
42
43#ifdef __cplusplus
44# define EV_CPP(x) x
45# if __cplusplus >= 201103L
46# define EV_NOEXCEPT noexcept
47# else
48# define EV_NOEXCEPT
49# endif
50#else
51# define EV_CPP(x)
52# define EV_NOEXCEPT
53#endif
54#define EV_THROW EV_NOEXCEPT /* pre-4.25, do not use in new code */
55
56EV_CPP(extern "C" {)
57
58/*****************************************************************************/
59
60/* pre-4.0 compatibility */
61#ifndef EV_COMPAT3
62# define EV_COMPAT3 1
63#endif
64
65#ifndef EV_FEATURES
66# if defined __OPTIMIZE_SIZE__
67# define EV_FEATURES 0x7c
68# else
69# define EV_FEATURES 0x7f
70# endif
71#endif
72
73#define EV_FEATURE_CODE ((EV_FEATURES) & 1)
74#define EV_FEATURE_DATA ((EV_FEATURES) & 2)
75#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
76#define EV_FEATURE_API ((EV_FEATURES) & 8)
77#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
78#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
79#define EV_FEATURE_OS ((EV_FEATURES) & 64)
80
81/* these priorities are inclusive, higher priorities will be invoked earlier */
82#ifndef EV_MINPRI
83# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
84#endif
85#ifndef EV_MAXPRI
86# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
87#endif
88
89#ifndef EV_MULTIPLICITY
90# define EV_MULTIPLICITY EV_FEATURE_CONFIG
91#endif
92
93#ifndef EV_PERIODIC_ENABLE
94# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
95#endif
96
97#ifndef EV_STAT_ENABLE
98# define EV_STAT_ENABLE EV_FEATURE_WATCHERS
99#endif
100
101#ifndef EV_PREPARE_ENABLE
102# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
103#endif
104
105#ifndef EV_CHECK_ENABLE
106# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
107#endif
108
109#ifndef EV_IDLE_ENABLE
110# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
111#endif
112
113#ifndef EV_FORK_ENABLE
114# define EV_FORK_ENABLE EV_FEATURE_WATCHERS
115#endif
116
117#ifndef EV_CLEANUP_ENABLE
118# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
119#endif
120
121#ifndef EV_SIGNAL_ENABLE
122# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
123#endif
124
125#ifndef EV_CHILD_ENABLE
126# ifdef _WIN32
127# define EV_CHILD_ENABLE 0
128# else
129# define EV_CHILD_ENABLE EV_FEATURE_WATCHERS
130#endif
131#endif
132
133#ifndef EV_ASYNC_ENABLE
134# define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS
135#endif
136
137#ifndef EV_EMBED_ENABLE
138# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
139#endif
140
141#ifndef EV_WALK_ENABLE
142# define EV_WALK_ENABLE 0 /* not yet */
143#endif
144
145/*****************************************************************************/
146
147#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE
148# undef EV_SIGNAL_ENABLE
149# define EV_SIGNAL_ENABLE 1
150#endif
151
152/*****************************************************************************/
32 153
33typedef double ev_tstamp; 154typedef double ev_tstamp;
34 155
35/* eventmask, revents, events... */ 156#include <string.h> /* for memmove */
36#define EV_UNDEF -1 /* guaranteed to be invalid */
37#define EV_NONE 0x00
38#define EV_READ 0x01
39#define EV_WRITE 0x02
40#define EV_REIFY 0x04 /* private */
41#define EV_TIMEOUT 0x000100
42#define EV_SIGNAL 0x000200
43#define EV_IDLE 0x000400
44#define EV_CHECK 0x000800
45#define EV_PREPARE 0x001000
46#define EV_CHILD 0x002000
47#define EV_ERROR 0x800000 /* sent when an error occurs */
48 157
49/* can be used to add custom fields to all watchers */ 158#ifndef EV_ATOMIC_T
50#ifndef EV_COMMON 159# include <signal.h>
51# define EV_COMMON void *data 160# define EV_ATOMIC_T sig_atomic_t volatile
161#endif
162
163#if EV_STAT_ENABLE
164# ifdef _WIN32
165# include <time.h>
166# include <sys/types.h>
52#endif 167# endif
168# include <sys/stat.h>
169#endif
170
171/* support multiple event loops? */
172#if EV_MULTIPLICITY
173struct ev_loop;
174# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */
175# define EV_P_ EV_P, /* a loop as first of multiple parameters */
176# define EV_A loop /* a loop as sole argument to a function call */
177# define EV_A_ EV_A, /* a loop as first of multiple arguments */
178# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
179# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
180# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
181# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
182#else
183# define EV_P void
184# define EV_P_
185# define EV_A
186# define EV_A_
187# define EV_DEFAULT
188# define EV_DEFAULT_
189# define EV_DEFAULT_UC
190# define EV_DEFAULT_UC_
191# undef EV_EMBED_ENABLE
192#endif
193
194/* EV_INLINE is used for functions in header files */
195#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
196# define EV_INLINE static inline
197#else
198# define EV_INLINE static
199#endif
200
201#ifdef EV_API_STATIC
202# define EV_API_DECL static
203#else
204# define EV_API_DECL extern
205#endif
206
207/* EV_PROTOTYPES can be used to switch of prototype declarations */
53#ifndef EV_PROTOTYPES 208#ifndef EV_PROTOTYPES
54# define EV_PROTOTYPES 1 209# define EV_PROTOTYPES 1
55#endif 210#endif
56 211
212/*****************************************************************************/
213
57#define EV_VERSION_MAJOR 1 214#define EV_VERSION_MAJOR 4
58#define EV_VERSION_MINOR 1 215#define EV_VERSION_MINOR 27
216
217/* eventmask, revents, events... */
218enum {
219 EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */
220 EV_NONE = 0x00, /* no events */
221 EV_READ = 0x01, /* ev_io detected read will not block */
222 EV_WRITE = 0x02, /* ev_io detected write will not block */
223 EV__IOFDSET = 0x80, /* internal use only */
224 EV_IO = EV_READ, /* alias for type-detection */
225 EV_TIMER = 0x00000100, /* timer timed out */
226#if EV_COMPAT3
227 EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
228#endif
229 EV_PERIODIC = 0x00000200, /* periodic timer timed out */
230 EV_SIGNAL = 0x00000400, /* signal was received */
231 EV_CHILD = 0x00000800, /* child/pid had status change */
232 EV_STAT = 0x00001000, /* stat data changed */
233 EV_IDLE = 0x00002000, /* event loop is idling */
234 EV_PREPARE = 0x00004000, /* event loop about to poll */
235 EV_CHECK = 0x00008000, /* event loop finished poll */
236 EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
237 EV_FORK = 0x00020000, /* event loop resumed in child */
238 EV_CLEANUP = 0x00040000, /* event loop resumed in child */
239 EV_ASYNC = 0x00080000, /* async intra-loop signal */
240 EV_CUSTOM = 0x01000000, /* for use by user code */
241 EV_ERROR = (int)0x80000000 /* sent when an error occurs */
242};
243
244/* can be used to add custom fields to all watchers, while losing binary compatibility */
245#ifndef EV_COMMON
246# define EV_COMMON void *data;
247#endif
248
249#ifndef EV_CB_DECLARE
250# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
251#endif
252#ifndef EV_CB_INVOKE
253# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
254#endif
255
256/* not official, do not use */
257#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
59 258
60/* 259/*
61 * struct member types: 260 * struct member types:
62 * private: you can look at them, but not change them, and they might not mean anything to you. 261 * private: you may look at them, but not change them,
262 * and they might not mean anything to you.
63 * ro: can be read anytime, but only changed when the watcher isn't active 263 * ro: can be read anytime, but only changed when the watcher isn't active.
64 * rw: can be read and modified anytime, even when the watcher is active 264 * rw: can be read and modified anytime, even when the watcher is active.
265 *
266 * some internal details that might be helpful for debugging:
267 *
268 * active is either 0, which means the watcher is not active,
269 * or the array index of the watcher (periodics, timers)
270 * or the array index + 1 (most other watchers)
271 * or simply 1 for watchers that aren't in some array.
272 * pending is either 0, in which case the watcher isn't,
273 * or the array index + 1 in the pendings array.
65 */ 274 */
275
276#if EV_MINPRI == EV_MAXPRI
277# define EV_DECL_PRIORITY
278#elif !defined (EV_DECL_PRIORITY)
279# define EV_DECL_PRIORITY int priority;
280#endif
66 281
67/* shared by all watchers */ 282/* shared by all watchers */
68#define EV_WATCHER(type) \ 283#define EV_WATCHER(type) \
69 int active; /* private */ \ 284 int active; /* private */ \
70 int pending; /* private */ \ 285 int pending; /* private */ \
286 EV_DECL_PRIORITY /* private */ \
71 EV_COMMON; /* rw */ \ 287 EV_COMMON /* rw */ \
72 void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ 288 EV_CB_DECLARE (type) /* private */
73 289
74#define EV_WATCHER_LIST(type) \ 290#define EV_WATCHER_LIST(type) \
75 EV_WATCHER (type); \ 291 EV_WATCHER (type) \
76 struct type *next /* private */ 292 struct ev_watcher_list *next; /* private */
77 293
78#define EV_WATCHER_TIME(type) \ 294#define EV_WATCHER_TIME(type) \
79 EV_WATCHER (type); \ 295 EV_WATCHER (type) \
80 ev_tstamp at /* private */ 296 ev_tstamp at; /* private */
81 297
82/* base class, nothing to see here unless you subclass */ 298/* base class, nothing to see here unless you subclass */
83struct ev_watcher { 299typedef struct ev_watcher
300{
84 EV_WATCHER (ev_watcher); 301 EV_WATCHER (ev_watcher)
85}; 302} ev_watcher;
86 303
87/* base class, nothing to see here unless you subclass */ 304/* base class, nothing to see here unless you subclass */
88struct ev_watcher_list { 305typedef struct ev_watcher_list
306{
89 EV_WATCHER_LIST (ev_watcher_list); 307 EV_WATCHER_LIST (ev_watcher_list)
90}; 308} ev_watcher_list;
91 309
92/* base class, nothing to see here unless you subclass */ 310/* base class, nothing to see here unless you subclass */
93struct ev_watcher_time { 311typedef struct ev_watcher_time
312{
94 EV_WATCHER_TIME (ev_watcher_time); 313 EV_WATCHER_TIME (ev_watcher_time)
95}; 314} ev_watcher_time;
96
97/* invoked after a specific time, repeatable (based on monotonic clock) */
98struct ev_timer
99{
100 EV_WATCHER_TIME (ev_timer);
101
102 ev_tstamp repeat; /* rw */
103};
104
105/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
106struct ev_periodic
107{
108 EV_WATCHER_TIME (ev_periodic);
109
110 ev_tstamp interval; /* rw */
111};
112 315
113/* invoked when fd is either EV_READable or EV_WRITEable */ 316/* invoked when fd is either EV_READable or EV_WRITEable */
317/* revent EV_READ, EV_WRITE */
114struct ev_io 318typedef struct ev_io
115{ 319{
116 EV_WATCHER_LIST (ev_io); 320 EV_WATCHER_LIST (ev_io)
117 321
118 int fd; /* ro */ 322 int fd; /* ro */
119 int events; /* ro */ 323 int events; /* ro */
120}; 324} ev_io;
325
326/* invoked after a specific time, repeatable (based on monotonic clock) */
327/* revent EV_TIMEOUT */
328typedef struct ev_timer
329{
330 EV_WATCHER_TIME (ev_timer)
331
332 ev_tstamp repeat; /* rw */
333} ev_timer;
334
335/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
336/* revent EV_PERIODIC */
337typedef struct ev_periodic
338{
339 EV_WATCHER_TIME (ev_periodic)
340
341 ev_tstamp offset; /* rw */
342 ev_tstamp interval; /* rw */
343 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) EV_NOEXCEPT; /* rw */
344} ev_periodic;
121 345
122/* invoked when the given signal has been received */ 346/* invoked when the given signal has been received */
347/* revent EV_SIGNAL */
123struct ev_signal 348typedef struct ev_signal
124{ 349{
125 EV_WATCHER_LIST (ev_signal); 350 EV_WATCHER_LIST (ev_signal)
126 351
127 int signum; /* ro */ 352 int signum; /* ro */
128}; 353} ev_signal;
129 354
355/* invoked when sigchld is received and waitpid indicates the given pid */
356/* revent EV_CHILD */
357/* does not support priorities */
358typedef struct ev_child
359{
360 EV_WATCHER_LIST (ev_child)
361
362 int flags; /* private */
363 int pid; /* ro */
364 int rpid; /* rw, holds the received pid */
365 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
366} ev_child;
367
368#if EV_STAT_ENABLE
369/* st_nlink = 0 means missing file or other error */
370# ifdef _WIN32
371typedef struct _stati64 ev_statdata;
372# else
373typedef struct stat ev_statdata;
374# endif
375
376/* invoked each time the stat data changes for a given path */
377/* revent EV_STAT */
378typedef struct ev_stat
379{
380 EV_WATCHER_LIST (ev_stat)
381
382 ev_timer timer; /* private */
383 ev_tstamp interval; /* ro */
384 const char *path; /* ro */
385 ev_statdata prev; /* ro */
386 ev_statdata attr; /* ro */
387
388 int wd; /* wd for inotify, fd for kqueue */
389} ev_stat;
390#endif
391
392#if EV_IDLE_ENABLE
130/* invoked when the nothing else needs to be done, keeps the process from blocking */ 393/* invoked when the nothing else needs to be done, keeps the process from blocking */
394/* revent EV_IDLE */
131struct ev_idle 395typedef struct ev_idle
132{ 396{
133 EV_WATCHER (ev_idle); 397 EV_WATCHER (ev_idle)
134}; 398} ev_idle;
399#endif
135 400
136/* invoked for each run of the mainloop, just before the blocking call */ 401/* invoked for each run of the mainloop, just before the blocking call */
137/* you can still change events in any way you like */ 402/* you can still change events in any way you like */
403/* revent EV_PREPARE */
138struct ev_prepare 404typedef struct ev_prepare
139{ 405{
140 EV_WATCHER (ev_prepare); 406 EV_WATCHER (ev_prepare)
407} ev_prepare;
408
409/* invoked for each run of the mainloop, just after the blocking call */
410/* revent EV_CHECK */
411typedef struct ev_check
412{
413 EV_WATCHER (ev_check)
414} ev_check;
415
416#if EV_FORK_ENABLE
417/* the callback gets invoked before check in the child process when a fork was detected */
418/* revent EV_FORK */
419typedef struct ev_fork
420{
421 EV_WATCHER (ev_fork)
422} ev_fork;
423#endif
424
425#if EV_CLEANUP_ENABLE
426/* is invoked just before the loop gets destroyed */
427/* revent EV_CLEANUP */
428typedef struct ev_cleanup
429{
430 EV_WATCHER (ev_cleanup)
431} ev_cleanup;
432#endif
433
434#if EV_EMBED_ENABLE
435/* used to embed an event loop inside another */
436/* the callback gets invoked when the event loop has handled events, and can be 0 */
437typedef struct ev_embed
438{
439 EV_WATCHER (ev_embed)
440
441 struct ev_loop *other; /* ro */
442 ev_io io; /* private */
443 ev_prepare prepare; /* private */
444 ev_check check; /* unused */
445 ev_timer timer; /* unused */
446 ev_periodic periodic; /* unused */
447 ev_idle idle; /* unused */
448 ev_fork fork; /* private */
449#if EV_CLEANUP_ENABLE
450 ev_cleanup cleanup; /* unused */
451#endif
452} ev_embed;
453#endif
454
455#if EV_ASYNC_ENABLE
456/* invoked when somebody calls ev_async_send on the watcher */
457/* revent EV_ASYNC */
458typedef struct ev_async
459{
460 EV_WATCHER (ev_async)
461
462 EV_ATOMIC_T sent; /* private */
463} ev_async;
464
465# define ev_async_pending(w) (+(w)->sent)
466#endif
467
468/* the presence of this union forces similar struct layout */
469union ev_any_watcher
470{
471 struct ev_watcher w;
472 struct ev_watcher_list wl;
473
474 struct ev_io io;
475 struct ev_timer timer;
476 struct ev_periodic periodic;
477 struct ev_signal signal;
478 struct ev_child child;
479#if EV_STAT_ENABLE
480 struct ev_stat stat;
481#endif
482#if EV_IDLE_ENABLE
483 struct ev_idle idle;
484#endif
485 struct ev_prepare prepare;
486 struct ev_check check;
487#if EV_FORK_ENABLE
488 struct ev_fork fork;
489#endif
490#if EV_CLEANUP_ENABLE
491 struct ev_cleanup cleanup;
492#endif
493#if EV_EMBED_ENABLE
494 struct ev_embed embed;
495#endif
496#if EV_ASYNC_ENABLE
497 struct ev_async async;
498#endif
141}; 499};
142 500
143/* invoked for each run of the mainloop, just after the blocking call */ 501/* flag bits for ev_default_loop and ev_loop_new */
144struct ev_check 502enum {
145{ 503 /* the default */
146 EV_WATCHER (ev_check); 504 EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
505 /* flag bits */
506 EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
507 EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
508 /* debugging/feature disable */
509 EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
510#if EV_COMPAT3
511 EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
512#endif
513 EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */
514 EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */
147}; 515};
148 516
149/* invoked when sigchld is received and waitpid indicates the givne pid */ 517/* method bits to be ored together */
150struct ev_child 518enum {
151{ 519 EVBACKEND_SELECT = 0x00000001U, /* available just about anywhere */
152 EV_WATCHER_LIST (ev_child); 520 EVBACKEND_POLL = 0x00000002U, /* !win, !aix, broken on osx */
153 521 EVBACKEND_EPOLL = 0x00000004U, /* linux */
154 int pid; /* ro */ 522 EVBACKEND_KQUEUE = 0x00000008U, /* bsd, broken on osx */
155 int status; /* rw, holds the exit status, use the macros from sys/wait.h */ 523 EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
524 EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
525 EVBACKEND_LINUXAIO = 0x00000040U, /* linuix AIO */
526 EVBACKEND_IOURING = 0x00000080U, /* linux io_uring, TBD */
527 EVBACKEND_ALL = 0x000000FFU, /* all known backends */
528 EVBACKEND_MASK = 0x0000FFFFU /* all future backends */
156}; 529};
157 530
158#define EVMETHOD_NONE 0
159#define EVMETHOD_SELECT 1
160#define EVMETHOD_EPOLL 2
161#if EV_PROTOTYPES 531#if EV_PROTOTYPES
162extern int ev_method; 532EV_API_DECL int ev_version_major (void) EV_NOEXCEPT;
163int ev_init (int flags); /* returns ev_method */ 533EV_API_DECL int ev_version_minor (void) EV_NOEXCEPT;
164int ev_version_major (void);
165int ev_version_minor (void);
166 534
167/* these three calls are suitable for plugging into pthread_atfork */ 535EV_API_DECL unsigned int ev_supported_backends (void) EV_NOEXCEPT;
168void ev_prefork (void); 536EV_API_DECL unsigned int ev_recommended_backends (void) EV_NOEXCEPT;
169void ev_postfork_parent (void); 537EV_API_DECL unsigned int ev_embeddable_backends (void) EV_NOEXCEPT;
170void ev_postfork_child (void);
171 538
539EV_API_DECL ev_tstamp ev_time (void) EV_NOEXCEPT;
540EV_API_DECL void ev_sleep (ev_tstamp delay) EV_NOEXCEPT; /* sleep for a while */
541
542/* Sets the allocation function to use, works like realloc.
543 * It is used to allocate and free memory.
544 * If it returns zero when memory needs to be allocated, the library might abort
545 * or take some potentially destructive action.
546 * The default is your system realloc function.
547 */
548EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT;
549
550/* set the callback function to call on a
551 * retryable syscall error
552 * (such as failed select, poll, epoll_wait)
553 */
554EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT;
555
556#if EV_MULTIPLICITY
557
558/* the default loop is the only one that handles signals and child watchers */
559/* you can call this as often as you like */
560EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_NOEXCEPT;
561
562#ifdef EV_API_STATIC
563EV_API_DECL struct ev_loop *ev_default_loop_ptr;
564#endif
565
566EV_INLINE struct ev_loop *
567ev_default_loop_uc_ (void) EV_NOEXCEPT
568{
569 extern struct ev_loop *ev_default_loop_ptr;
570
571 return ev_default_loop_ptr;
572}
573
574EV_INLINE int
575ev_is_default_loop (EV_P) EV_NOEXCEPT
576{
577 return EV_A == EV_DEFAULT_UC;
578}
579
580/* create and destroy alternative loops that don't handle signals */
581EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)) EV_NOEXCEPT;
582
172extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ 583EV_API_DECL ev_tstamp ev_now (EV_P) EV_NOEXCEPT; /* time w.r.t. timers and the eventloop, updated after each poll */
173ev_tstamp ev_time (void);
174#endif
175 584
176#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 585#else
177#define EVLOOP_ONESHOT 2 /* block *once* only */ 586
587EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_NOEXCEPT; /* returns true when successful */
588
589EV_API_DECL ev_tstamp ev_rt_now;
590
591EV_INLINE ev_tstamp
592ev_now (void) EV_NOEXCEPT
593{
594 return ev_rt_now;
595}
596
597/* looks weird, but ev_is_default_loop (EV_A) still works if this exists */
598EV_INLINE int
599ev_is_default_loop (void) EV_NOEXCEPT
600{
601 return 1;
602}
603
604#endif /* multiplicity */
605
606/* destroy event loops, also works for the default loop */
607EV_API_DECL void ev_loop_destroy (EV_P);
608
609/* this needs to be called after fork, to duplicate the loop */
610/* when you want to re-use it in the child */
611/* you can call it in either the parent or the child */
612/* you can actually call it at any time, anywhere :) */
613EV_API_DECL void ev_loop_fork (EV_P) EV_NOEXCEPT;
614
615EV_API_DECL unsigned int ev_backend (EV_P) EV_NOEXCEPT; /* backend in use by loop */
616
617EV_API_DECL void ev_now_update (EV_P) EV_NOEXCEPT; /* update event loop time */
618
619#if EV_WALK_ENABLE
620/* walk (almost) all watchers in the loop of a given type, invoking the */
621/* callback on every such watcher. The callback might stop the watcher, */
622/* but do nothing else with the loop */
623EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT;
624#endif
625
626#endif /* prototypes */
627
628/* ev_run flags values */
629enum {
630 EVRUN_NOWAIT = 1, /* do not block/wait */
631 EVRUN_ONCE = 2 /* block *once* only */
632};
633
634/* ev_break how values */
635enum {
636 EVBREAK_CANCEL = 0, /* undo unloop */
637 EVBREAK_ONE = 1, /* unloop once */
638 EVBREAK_ALL = 2 /* unloop all loops */
639};
640
178#if EV_PROTOTYPES 641#if EV_PROTOTYPES
179void ev_loop (int flags); 642EV_API_DECL int ev_run (EV_P_ int flags EV_CPP (= 0));
180extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ 643EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)) EV_NOEXCEPT; /* break out of the loop */
181 644
645/*
646 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
647 * keeps one reference. if you have a long-running watcher you never unregister that
648 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
649 */
650EV_API_DECL void ev_ref (EV_P) EV_NOEXCEPT;
651EV_API_DECL void ev_unref (EV_P) EV_NOEXCEPT;
652
653/*
182/* convinience function, wait for a single event, without registering an event watcher */ 654 * convenience function, wait for a single event, without registering an event watcher
183/* if timeout is < 0, do wait indefinitely */ 655 * if timeout is < 0, do wait indefinitely
656 */
184void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 657EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT;
658
659# if EV_FEATURE_API
660EV_API_DECL unsigned int ev_iteration (EV_P) EV_NOEXCEPT; /* number of loop iterations */
661EV_API_DECL unsigned int ev_depth (EV_P) EV_NOEXCEPT; /* #ev_loop enters - #ev_loop leaves */
662EV_API_DECL void ev_verify (EV_P) EV_NOEXCEPT; /* abort if loop data corrupted */
663
664EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT; /* sleep at least this time, default 0 */
665EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT; /* sleep at least this time, default 0 */
666
667/* advanced stuff for threading etc. support, see docs */
668EV_API_DECL void ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT;
669EV_API_DECL void *ev_userdata (EV_P) EV_NOEXCEPT;
670typedef void (*ev_loop_callback)(EV_P);
671EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT;
672/* C++ doesn't allow the use of the ev_loop_callback typedef here, so we need to spell it out */
673EV_API_DECL void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT;
674
675EV_API_DECL unsigned int ev_pending_count (EV_P) EV_NOEXCEPT; /* number of pending events, if any */
676EV_API_DECL void ev_invoke_pending (EV_P); /* invoke all pending watchers */
677
678/*
679 * stop/start the timer handling.
680 */
681EV_API_DECL void ev_suspend (EV_P) EV_NOEXCEPT;
682EV_API_DECL void ev_resume (EV_P) EV_NOEXCEPT;
683#endif
684
185#endif 685#endif
186 686
187/* these may evaluate ev multiple times, and the other arguments at most once */ 687/* these may evaluate ev multiple times, and the other arguments at most once */
188/* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ 688/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
189#define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) 689#define ev_init(ev,cb_) do { \
690 ((ev_watcher *)(void *)(ev))->active = \
691 ((ev_watcher *)(void *)(ev))->pending = 0; \
692 ev_set_priority ((ev), 0); \
693 ev_set_cb ((ev), cb_); \
694} while (0)
190 695
191#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 696#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
192#define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 697#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
193#define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) 698#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
194#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 699#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
700#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
701#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
195#define evidle_set(ev) /* nop, yes, this is a serious in-joke */ 702#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
196#define evprepare_set(ev) /* nop, yes, this is a serious in-joke */ 703#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
197#define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ 704#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
198#define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) 705#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
706#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
707#define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
708#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
199 709
200#define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) 710#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
201#define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) 711#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
202#define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) 712#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
203#define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) 713#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
714#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
715#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
204#define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) 716#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
205#define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) 717#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
206#define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) 718#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
719#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
720#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
207#define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0) 721#define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0)
722#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
208 723
724#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
209#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ 725#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
726
727#define ev_cb_(ev) (ev)->cb /* rw */
728#define ev_cb(ev) (memmove (&ev_cb_ (ev), &((ev_watcher *)(ev))->cb, sizeof (ev_cb_ (ev))), (ev)->cb)
729
730#if EV_MINPRI == EV_MAXPRI
731# define ev_priority(ev) ((ev), EV_MINPRI)
732# define ev_set_priority(ev,pri) ((ev), (pri))
733#else
734# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
735# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
736#endif
737
738#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
739
740#ifndef ev_set_cb
741# define ev_set_cb(ev,cb_) (ev_cb_ (ev) = (cb_), memmove (&((ev_watcher *)(ev))->cb, &ev_cb_ (ev), sizeof (ev_cb_ (ev))))
742#endif
210 743
211/* stopping (enabling, adding) a watcher does nothing if it is already running */ 744/* stopping (enabling, adding) a watcher does nothing if it is already running */
212/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 745/* stopping (disabling, deleting) a watcher does nothing unless it's already running */
213#if EV_PROTOTYPES 746#if EV_PROTOTYPES
214void evio_start (struct ev_io *w);
215void evio_stop (struct ev_io *w);
216 747
217void evtimer_start (struct ev_timer *w); 748/* feeds an event into a watcher as if the event actually occurred */
218void evtimer_stop (struct ev_timer *w); 749/* accepts any ev_watcher type */
750EV_API_DECL void ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT;
751EV_API_DECL void ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT;
752#if EV_SIGNAL_ENABLE
753EV_API_DECL void ev_feed_signal (int signum) EV_NOEXCEPT;
754EV_API_DECL void ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT;
755#endif
756EV_API_DECL void ev_invoke (EV_P_ void *w, int revents);
757EV_API_DECL int ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT;
758
759EV_API_DECL void ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT;
760EV_API_DECL void ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT;
761
762EV_API_DECL void ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT;
763EV_API_DECL void ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT;
219void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 764/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
765EV_API_DECL void ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT;
766/* return remaining time */
767EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT;
220 768
221void evperiodic_start (struct ev_periodic *w); 769#if EV_PERIODIC_ENABLE
222void evperiodic_stop (struct ev_periodic *w); 770EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT;
771EV_API_DECL void ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT;
772EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT;
773#endif
223 774
224void evsignal_start (struct ev_signal *w); 775/* only supported in the default loop */
225void evsignal_stop (struct ev_signal *w); 776#if EV_SIGNAL_ENABLE
777EV_API_DECL void ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT;
778EV_API_DECL void ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT;
779#endif
226 780
227void evidle_start (struct ev_idle *w); 781/* only supported in the default loop */
228void evidle_stop (struct ev_idle *w); 782# if EV_CHILD_ENABLE
229 783EV_API_DECL void ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT;
230void evprepare_start (struct ev_prepare *w); 784EV_API_DECL void ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT;
231void evprepare_stop (struct ev_prepare *w);
232
233void evcheck_start (struct ev_check *w);
234void evcheck_stop (struct ev_check *w);
235
236void evchild_start (struct ev_child *w);
237void evchild_stop (struct ev_child *w);
238#endif 785# endif
239 786
787# if EV_STAT_ENABLE
788EV_API_DECL void ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT;
789EV_API_DECL void ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT;
790EV_API_DECL void ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT;
240#endif 791# endif
241 792
793# if EV_IDLE_ENABLE
794EV_API_DECL void ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT;
795EV_API_DECL void ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT;
796# endif
797
798#if EV_PREPARE_ENABLE
799EV_API_DECL void ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT;
800EV_API_DECL void ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT;
801#endif
802
803#if EV_CHECK_ENABLE
804EV_API_DECL void ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT;
805EV_API_DECL void ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT;
806#endif
807
808# if EV_FORK_ENABLE
809EV_API_DECL void ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT;
810EV_API_DECL void ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT;
811# endif
812
813# if EV_CLEANUP_ENABLE
814EV_API_DECL void ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT;
815EV_API_DECL void ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT;
816# endif
817
818# if EV_EMBED_ENABLE
819/* only supported when loop to be embedded is in fact embeddable */
820EV_API_DECL void ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT;
821EV_API_DECL void ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT;
822EV_API_DECL void ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT;
823# endif
824
825# if EV_ASYNC_ENABLE
826EV_API_DECL void ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT;
827EV_API_DECL void ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT;
828EV_API_DECL void ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT;
829# endif
830
831#if EV_COMPAT3
832 #define EVLOOP_NONBLOCK EVRUN_NOWAIT
833 #define EVLOOP_ONESHOT EVRUN_ONCE
834 #define EVUNLOOP_CANCEL EVBREAK_CANCEL
835 #define EVUNLOOP_ONE EVBREAK_ONE
836 #define EVUNLOOP_ALL EVBREAK_ALL
837 #if EV_PROTOTYPES
838 EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
839 EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
840 EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
841 EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
842 #if EV_FEATURE_API
843 EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); }
844 EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); }
845 EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
846 #endif
847 #endif
848#else
849 typedef struct ev_loop ev_loop;
850#endif
851
852#endif
853
854EV_CPP(})
855
856#endif
857

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