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Comparing libev/ev.h (file contents):
Revision 1.146 by root, Fri Oct 22 06:14:28 2010 UTC vs.
Revision 1.192 by root, Mon Jun 24 22:27:29 2019 UTC

1/* 1/*
2 * libev native API header 2 * libev native API header
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 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- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 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- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
39 39
40#ifndef EV_H_ 40#ifndef EV_H_
41#define EV_H_ 41#define EV_H_
42 42
43#ifdef __cplusplus 43#ifdef __cplusplus
44extern "C" { 44# define EV_CPP(x) x
45# if __cplusplus >= 201103L
46# define EV_NOEXCEPT noexcept
47# else
48# define EV_NOEXCEPT
45#endif 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" {)
46 57
47/*****************************************************************************/ 58/*****************************************************************************/
48 59
49/* pre-4.0 compatibility */ 60/* pre-4.0 compatibility */
50#ifndef EV_COMPAT3 61#ifndef EV_COMPAT3
51# define EV_COMPAT3 1 62# define EV_COMPAT3 1
52#endif 63#endif
53 64
54#ifndef EV_FEATURES 65#ifndef EV_FEATURES
66# if defined __OPTIMIZE_SIZE__
67# define EV_FEATURES 0x7c
68# else
55# define EV_FEATURES 0x7f 69# define EV_FEATURES 0x7f
70# endif
56#endif 71#endif
57 72
58#define EV_FEATURE_CODE ((EV_FEATURES) & 1) 73#define EV_FEATURE_CODE ((EV_FEATURES) & 1)
59#define EV_FEATURE_DATA ((EV_FEATURES) & 2) 74#define EV_FEATURE_DATA ((EV_FEATURES) & 2)
60#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4) 75#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
… …
97 112
98#ifndef EV_FORK_ENABLE 113#ifndef EV_FORK_ENABLE
99# define EV_FORK_ENABLE EV_FEATURE_WATCHERS 114# define EV_FORK_ENABLE EV_FEATURE_WATCHERS
100#endif 115#endif
101 116
117#ifndef EV_CLEANUP_ENABLE
118# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
119#endif
120
102#ifndef EV_SIGNAL_ENABLE 121#ifndef EV_SIGNAL_ENABLE
103# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS 122# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
104#endif 123#endif
105 124
106#ifndef EV_CHILD_ENABLE 125#ifndef EV_CHILD_ENABLE
… …
132 151
133/*****************************************************************************/ 152/*****************************************************************************/
134 153
135typedef double ev_tstamp; 154typedef double ev_tstamp;
136 155
156#include <string.h> /* for memmove */
157
137#ifndef EV_ATOMIC_T 158#ifndef EV_ATOMIC_T
138# include <signal.h> 159# include <signal.h>
139# define EV_ATOMIC_T sig_atomic_t volatile 160# define EV_ATOMIC_T sig_atomic_t volatile
140#endif 161#endif
141 162
… …
143# ifdef _WIN32 164# ifdef _WIN32
144# include <time.h> 165# include <time.h>
145# include <sys/types.h> 166# include <sys/types.h>
146# endif 167# endif
147# include <sys/stat.h> 168# include <sys/stat.h>
148#endif
149
150/* in C++ we can use this to provide default arguments */
151#ifdef __cplusplus
152# define EV_DEFARG(x) = x
153#else
154# define EV_DEFARG(x)
155#endif 169#endif
156 170
157/* support multiple event loops? */ 171/* support multiple event loops? */
158#if EV_MULTIPLICITY 172#if EV_MULTIPLICITY
159struct ev_loop; 173struct ev_loop;
160# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */ 174# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */
161# define EV_P_ EV_P, /* a loop as first of multiple parameters */ 175# define EV_P_ EV_P, /* a loop as first of multiple parameters */
162# define EV_A loop /* a loop as sole argument to a function call */ 176# define EV_A loop /* a loop as sole argument to a function call */
163# define EV_A_ EV_A, /* a loop as first of multiple arguments */ 177# define EV_A_ EV_A, /* a loop as first of multiple arguments */
164# define EV_DEFAULT_UC ev_default_loop_uc () /* the default loop, if initialised, as sole arg */ 178# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
165# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ 179# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
166# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ 180# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
167# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ 181# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
168# define EV_PDEF EV_P EV_DEFARG (EV_DEFAULT_UC) /* EV_P, but with default argument in C++ */
169# define EV_PDEF_ EV_P EV_DEFARG (EV_DEFAULT_UC), /* EV_P_, but with default argument in C++ */
170#else 182#else
171# define EV_P void 183# define EV_P void
172# define EV_P_ 184# define EV_P_
173# define EV_A 185# define EV_A
174# define EV_A_ 186# define EV_A_
175# define EV_DEFAULT 187# define EV_DEFAULT
176# define EV_DEFAULT_ 188# define EV_DEFAULT_
177# define EV_DEFAULT_UC 189# define EV_DEFAULT_UC
178# define EV_DEFAULT_UC_ 190# define EV_DEFAULT_UC_
179# define EV_PDEF EV_P
180# define EV_PDEF_ EV_P_
181# undef EV_EMBED_ENABLE 191# undef EV_EMBED_ENABLE
182#endif 192#endif
183 193
184/* EV_INLINE is used for functions in header files */ 194/* EV_INLINE is used for functions in header files */
185#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 195#if __STDC_VERSION__ >= 199901L || __GNUC__ >= 3
186# define EV_INLINE static inline 196# define EV_INLINE static inline
187#else 197#else
188# define EV_INLINE static 198# define EV_INLINE static
189#endif 199#endif
190 200
201#ifdef EV_API_STATIC
202# define EV_API_DECL static
203#else
204# define EV_API_DECL extern
205#endif
206
191/* EV_PROTOTYPES can be sued to switch of prototype declarations */ 207/* EV_PROTOTYPES can be used to switch of prototype declarations */
192#ifndef EV_PROTOTYPES 208#ifndef EV_PROTOTYPES
193# define EV_PROTOTYPES 1 209# define EV_PROTOTYPES 1
194#endif 210#endif
195 211
196/*****************************************************************************/ 212/*****************************************************************************/
197 213
198#define EV_VERSION_MAJOR 4 214#define EV_VERSION_MAJOR 4
199#define EV_VERSION_MINOR 0 215#define EV_VERSION_MINOR 26
200 216
201/* eventmask, revents, events... */ 217/* eventmask, revents, events... */
202enum { 218enum {
203 EV_UNDEF = -1, /* guaranteed to be invalid */ 219 EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */
204 EV_NONE = 0x00, /* no events */ 220 EV_NONE = 0x00, /* no events */
205 EV_READ = 0x01, /* ev_io detected read will not block */ 221 EV_READ = 0x01, /* ev_io detected read will not block */
206 EV_WRITE = 0x02, /* ev_io detected write will not block */ 222 EV_WRITE = 0x02, /* ev_io detected write will not block */
207 EV__IOFDSET = 0x80, /* internal use only */ 223 EV__IOFDSET = 0x80, /* internal use only */
208 EV_IO = EV_READ, /* alias for type-detection */ 224 EV_IO = EV_READ, /* alias for type-detection */
209 EV_TIMER = 0x00000100, /* timer timed out */ 225 EV_TIMER = 0x00000100, /* timer timed out */
210#if EV_COMPAT3 226#if EV_COMPAT3
211 EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */ 227 EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
212#endif 228#endif
213 EV_PERIODIC = 0x00000200, /* periodic timer timed out */ 229 EV_PERIODIC = 0x00000200, /* periodic timer timed out */
214 EV_SIGNAL = 0x00000400, /* signal was received */ 230 EV_SIGNAL = 0x00000400, /* signal was received */
215 EV_CHILD = 0x00000800, /* child/pid had status change */ 231 EV_CHILD = 0x00000800, /* child/pid had status change */
216 EV_STAT = 0x00001000, /* stat data changed */ 232 EV_STAT = 0x00001000, /* stat data changed */
217 EV_IDLE = 0x00002000, /* event loop is idling */ 233 EV_IDLE = 0x00002000, /* event loop is idling */
218 EV_PREPARE = 0x00004000, /* event loop about to poll */ 234 EV_PREPARE = 0x00004000, /* event loop about to poll */
219 EV_CHECK = 0x00008000, /* event loop finished poll */ 235 EV_CHECK = 0x00008000, /* event loop finished poll */
220 EV_EMBED = 0x00010000, /* embedded event loop needs sweep */ 236 EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
221 EV_FORK = 0x00020000, /* event loop resumed in child */ 237 EV_FORK = 0x00020000, /* event loop resumed in child */
238 EV_CLEANUP = 0x00040000, /* event loop resumed in child */
222 EV_ASYNC = 0x00040000, /* async intra-loop signal */ 239 EV_ASYNC = 0x00080000, /* async intra-loop signal */
223 EV_CUSTOM = 0x01000000, /* for use by user code */ 240 EV_CUSTOM = 0x01000000, /* for use by user code */
224 EV_ERROR = 0x80000000 /* sent when an error occurs */ 241 EV_ERROR = (int)0x80000000 /* sent when an error occurs */
225}; 242};
226 243
227/* can be used to add custom fields to all watchers, while losing binary compatibility */ 244/* can be used to add custom fields to all watchers, while losing binary compatibility */
228#ifndef EV_COMMON 245#ifndef EV_COMMON
229# define EV_COMMON void *data; 246# define EV_COMMON void *data;
… …
321{ 338{
322 EV_WATCHER_TIME (ev_periodic) 339 EV_WATCHER_TIME (ev_periodic)
323 340
324 ev_tstamp offset; /* rw */ 341 ev_tstamp offset; /* rw */
325 ev_tstamp interval; /* rw */ 342 ev_tstamp interval; /* rw */
326 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ 343 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) EV_NOEXCEPT; /* rw */
327} ev_periodic; 344} ev_periodic;
328 345
329/* invoked when the given signal has been received */ 346/* invoked when the given signal has been received */
330/* revent EV_SIGNAL */ 347/* revent EV_SIGNAL */
331typedef struct ev_signal 348typedef struct ev_signal
… …
396 EV_WATCHER (ev_check) 413 EV_WATCHER (ev_check)
397} ev_check; 414} ev_check;
398 415
399#if EV_FORK_ENABLE 416#if EV_FORK_ENABLE
400/* the callback gets invoked before check in the child process when a fork was detected */ 417/* the callback gets invoked before check in the child process when a fork was detected */
418/* revent EV_FORK */
401typedef struct ev_fork 419typedef struct ev_fork
402{ 420{
403 EV_WATCHER (ev_fork) 421 EV_WATCHER (ev_fork)
404} 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;
405#endif 432#endif
406 433
407#if EV_EMBED_ENABLE 434#if EV_EMBED_ENABLE
408/* used to embed an event loop inside another */ 435/* used to embed an event loop inside another */
409/* the callback gets invoked when the event loop has handled events, and can be 0 */ 436/* the callback gets invoked when the event loop has handled events, and can be 0 */
… …
417 ev_check check; /* unused */ 444 ev_check check; /* unused */
418 ev_timer timer; /* unused */ 445 ev_timer timer; /* unused */
419 ev_periodic periodic; /* unused */ 446 ev_periodic periodic; /* unused */
420 ev_idle idle; /* unused */ 447 ev_idle idle; /* unused */
421 ev_fork fork; /* private */ 448 ev_fork fork; /* private */
449#if EV_CLEANUP_ENABLE
450 ev_cleanup cleanup; /* unused */
451#endif
422} ev_embed; 452} ev_embed;
423#endif 453#endif
424 454
425#if EV_ASYNC_ENABLE 455#if EV_ASYNC_ENABLE
426/* invoked when somebody calls ev_async_send on the watcher */ 456/* invoked when somebody calls ev_async_send on the watcher */
… …
454#endif 484#endif
455 struct ev_prepare prepare; 485 struct ev_prepare prepare;
456 struct ev_check check; 486 struct ev_check check;
457#if EV_FORK_ENABLE 487#if EV_FORK_ENABLE
458 struct ev_fork fork; 488 struct ev_fork fork;
489#endif
490#if EV_CLEANUP_ENABLE
491 struct ev_cleanup cleanup;
459#endif 492#endif
460#if EV_EMBED_ENABLE 493#if EV_EMBED_ENABLE
461 struct ev_embed embed; 494 struct ev_embed embed;
462#endif 495#endif
463#if EV_ASYNC_ENABLE 496#if EV_ASYNC_ENABLE
… …
475 /* debugging/feature disable */ 508 /* debugging/feature disable */
476 EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */ 509 EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
477#if EV_COMPAT3 510#if EV_COMPAT3
478 EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */ 511 EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
479#endif 512#endif
480 EVFLAG_SIGNALFD = 0x00200000U /* attempt to use signalfd */ 513 EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */
514 EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */
481}; 515};
482 516
483/* method bits to be ored together */ 517/* method bits to be ored together */
484enum { 518enum {
485 EVBACKEND_SELECT = 0x00000001U, /* about anywhere */ 519 EVBACKEND_SELECT = 0x00000001U, /* available just about anywhere */
486 EVBACKEND_POLL = 0x00000002U, /* !win */ 520 EVBACKEND_POLL = 0x00000002U, /* !win, !aix, broken on osx */
487 EVBACKEND_EPOLL = 0x00000004U, /* linux */ 521 EVBACKEND_EPOLL = 0x00000004U, /* linux */
488 EVBACKEND_KQUEUE = 0x00000008U, /* bsd */ 522 EVBACKEND_KQUEUE = 0x00000008U, /* bsd, broken on osx */
489 EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */ 523 EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
490 EVBACKEND_PORT = 0x00000020U, /* solaris 10 */ 524 EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
491 EVBACKEND_ALL = 0x0000003FU 525 EVBACKEND_LINUXAIO = 0x00000040U, /* Linuix AIO */
526 EVBACKEND_ALL = 0x0000007FU, /* all known backends */
527 EVBACKEND_MASK = 0x0000FFFFU /* all future backends */
492}; 528};
493 529
494#if EV_PROTOTYPES 530#if EV_PROTOTYPES
495int ev_version_major (void); 531EV_API_DECL int ev_version_major (void) EV_NOEXCEPT;
496int ev_version_minor (void); 532EV_API_DECL int ev_version_minor (void) EV_NOEXCEPT;
497 533
498unsigned int ev_supported_backends (void); 534EV_API_DECL unsigned int ev_supported_backends (void) EV_NOEXCEPT;
499unsigned int ev_recommended_backends (void); 535EV_API_DECL unsigned int ev_recommended_backends (void) EV_NOEXCEPT;
500unsigned int ev_embeddable_backends (void); 536EV_API_DECL unsigned int ev_embeddable_backends (void) EV_NOEXCEPT;
501 537
502ev_tstamp ev_time (void); 538EV_API_DECL ev_tstamp ev_time (void) EV_NOEXCEPT;
503void ev_sleep (ev_tstamp delay); /* sleep for a while */ 539EV_API_DECL void ev_sleep (ev_tstamp delay) EV_NOEXCEPT; /* sleep for a while */
504 540
505/* Sets the allocation function to use, works like realloc. 541/* Sets the allocation function to use, works like realloc.
506 * It is used to allocate and free memory. 542 * It is used to allocate and free memory.
507 * If it returns zero when memory needs to be allocated, the library might abort 543 * If it returns zero when memory needs to be allocated, the library might abort
508 * or take some potentially destructive action. 544 * or take some potentially destructive action.
509 * The default is your system realloc function. 545 * The default is your system realloc function.
510 */ 546 */
511void ev_set_allocator (void *(*cb)(void *ptr, long size)); 547EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT;
512 548
513/* set the callback function to call on a 549/* set the callback function to call on a
514 * retryable syscall error 550 * retryable syscall error
515 * (such as failed select, poll, epoll_wait) 551 * (such as failed select, poll, epoll_wait)
516 */ 552 */
517void ev_set_syserr_cb (void (*cb)(const char *msg)); 553EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT;
518 554
519#if EV_MULTIPLICITY 555#if EV_MULTIPLICITY
556
557/* the default loop is the only one that handles signals and child watchers */
558/* you can call this as often as you like */
559EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_NOEXCEPT;
560
561#ifdef EV_API_STATIC
562EV_API_DECL struct ev_loop *ev_default_loop_ptr;
563#endif
564
520EV_INLINE struct ev_loop * 565EV_INLINE struct ev_loop *
521ev_default_loop_uc (void) 566ev_default_loop_uc_ (void) EV_NOEXCEPT
522{ 567{
523 extern struct ev_loop *ev_default_loop_ptr; 568 extern struct ev_loop *ev_default_loop_ptr;
524 569
525 return ev_default_loop_ptr; 570 return ev_default_loop_ptr;
526} 571}
527 572
528/* the default loop is the only one that handles signals and child watchers */ 573EV_INLINE int
529/* you can call this as often as you like */ 574ev_is_default_loop (EV_P) EV_NOEXCEPT
530EV_INLINE struct ev_loop *
531ev_default_loop (unsigned int flags EV_DEFARG (0))
532{ 575{
533 struct ev_loop *loop = ev_default_loop_uc (); 576 return EV_A == EV_DEFAULT_UC;
534
535 if (!loop)
536 {
537 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
538
539 loop = ev_default_loop_init (flags);
540 }
541
542 return loop;
543} 577}
544 578
545/* create and destroy alternative loops that don't handle signals */ 579/* create and destroy alternative loops that don't handle signals */
546struct ev_loop *ev_loop_new (unsigned int flags EV_DEFARG (0)); 580EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)) EV_NOEXCEPT;
547void ev_loop_destroy (EV_PDEF);
548void ev_loop_fork (EV_PDEF);
549 581
550ev_tstamp ev_now (EV_PDEF); /* time w.r.t. timers and the eventloop, updated after each poll */ 582EV_API_DECL ev_tstamp ev_now (EV_P) EV_NOEXCEPT; /* time w.r.t. timers and the eventloop, updated after each poll */
551 583
552#else 584#else
553 585
554int ev_default_loop (unsigned int flags EV_DEFARG (0)); /* returns true when successful */ 586EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_NOEXCEPT; /* returns true when successful */
587
588EV_API_DECL ev_tstamp ev_rt_now;
555 589
556EV_INLINE ev_tstamp 590EV_INLINE ev_tstamp
557ev_now (void) 591ev_now (void) EV_NOEXCEPT
558{ 592{
559 extern ev_tstamp ev_rt_now;
560
561 return ev_rt_now; 593 return ev_rt_now;
562} 594}
595
596/* looks weird, but ev_is_default_loop (EV_A) still works if this exists */
597EV_INLINE int
598ev_is_default_loop (void) EV_NOEXCEPT
599{
600 return 1;
601}
602
563#endif /* multiplicity */ 603#endif /* multiplicity */
564 604
565EV_INLINE int 605/* destroy event loops, also works for the default loop */
566ev_is_default_loop (EV_PDEF) 606EV_API_DECL void ev_loop_destroy (EV_P);
567{
568#if EV_MULTIPLICITY
569 extern struct ev_loop *ev_default_loop_ptr;
570 607
571 return !!(EV_A == ev_default_loop_ptr);
572#else
573 return 1;
574#endif
575}
576
577void ev_default_destroy (void); /* destroy the default loop */
578/* this needs to be called after fork, to duplicate the default loop */ 608/* this needs to be called after fork, to duplicate the loop */
579/* if you create alternative loops you have to call ev_loop_fork on them */ 609/* when you want to re-use it in the child */
580/* you can call it in either the parent or the child */ 610/* you can call it in either the parent or the child */
581/* you can actually call it at any time, anywhere :) */ 611/* you can actually call it at any time, anywhere :) */
582void ev_default_fork (void); 612EV_API_DECL void ev_loop_fork (EV_P) EV_NOEXCEPT;
583 613
584unsigned int ev_backend (EV_PDEF); /* backend in use by loop */ 614EV_API_DECL unsigned int ev_backend (EV_P) EV_NOEXCEPT; /* backend in use by loop */
585 615
586void ev_now_update (EV_PDEF); /* update event loop time */ 616EV_API_DECL void ev_now_update (EV_P) EV_NOEXCEPT; /* update event loop time */
587 617
588#if EV_WALK_ENABLE 618#if EV_WALK_ENABLE
589/* walk (almost) all watchers in the loop of a given type, invoking the */ 619/* walk (almost) all watchers in the loop of a given type, invoking the */
590/* callback on every such watcher. The callback might stop the watcher, */ 620/* callback on every such watcher. The callback might stop the watcher, */
591/* but do nothing else with the loop */ 621/* but do nothing else with the loop */
592void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)); 622EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT;
593#endif 623#endif
594 624
595#endif /* prototypes */ 625#endif /* prototypes */
596 626
597/* ev_run flags values */ 627/* ev_run flags values */
… …
606 EVBREAK_ONE = 1, /* unloop once */ 636 EVBREAK_ONE = 1, /* unloop once */
607 EVBREAK_ALL = 2 /* unloop all loops */ 637 EVBREAK_ALL = 2 /* unloop all loops */
608}; 638};
609 639
610#if EV_PROTOTYPES 640#if EV_PROTOTYPES
611void ev_run (EV_PDEF_ int flags EV_DEFARG (0)); 641EV_API_DECL int ev_run (EV_P_ int flags EV_CPP (= 0));
612void ev_break (EV_PDEF_ int how EV_DEFARG (EVBREAK_ONE)); /* break out of the loop */ 642EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)) EV_NOEXCEPT; /* break out of the loop */
613 643
614/* 644/*
615 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher 645 * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
616 * keeps one reference. if you have a long-running watcher you never unregister that 646 * keeps one reference. if you have a long-running watcher you never unregister that
617 * should not keep ev_loop from running, unref() after starting, and ref() before stopping. 647 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
618 */ 648 */
619void ev_ref (EV_PDEF); 649EV_API_DECL void ev_ref (EV_P) EV_NOEXCEPT;
620void ev_unref (EV_PDEF); 650EV_API_DECL void ev_unref (EV_P) EV_NOEXCEPT;
621 651
622/* 652/*
623 * convenience function, wait for a single event, without registering an event watcher 653 * convenience function, wait for a single event, without registering an event watcher
624 * if timeout is < 0, do wait indefinitely 654 * if timeout is < 0, do wait indefinitely
625 */ 655 */
626void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 656EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT;
627 657
628# if EV_FEATURE_API 658# if EV_FEATURE_API
629unsigned int ev_iteration (EV_PDEF); /* number of loop iterations */ 659EV_API_DECL unsigned int ev_iteration (EV_P) EV_NOEXCEPT; /* number of loop iterations */
630unsigned int ev_depth (EV_PDEF); /* #ev_loop enters - #ev_loop leaves */ 660EV_API_DECL unsigned int ev_depth (EV_P) EV_NOEXCEPT; /* #ev_loop enters - #ev_loop leaves */
631void ev_verify (EV_PDEF); /* abort if loop data corrupted */ 661EV_API_DECL void ev_verify (EV_P) EV_NOEXCEPT; /* abort if loop data corrupted */
632 662
633void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ 663EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT; /* sleep at least this time, default 0 */
634void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */ 664EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT; /* sleep at least this time, default 0 */
635 665
636/* advanced stuff for threading etc. support, see docs */ 666/* advanced stuff for threading etc. support, see docs */
637void ev_set_userdata (EV_P_ void *data); 667EV_API_DECL void ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT;
638void *ev_userdata (EV_PDEF); 668EV_API_DECL void *ev_userdata (EV_P) EV_NOEXCEPT;
639void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)); 669typedef void (*ev_loop_callback)(EV_P);
670EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT;
671/* C++ doesn't allow the use of the ev_loop_callback typedef here, so we need to spell it out */
640void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)); 672EV_API_DECL void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT;
641 673
642unsigned int ev_pending_count (EV_PDEF); /* number of pending events, if any */ 674EV_API_DECL unsigned int ev_pending_count (EV_P) EV_NOEXCEPT; /* number of pending events, if any */
643void ev_invoke_pending (EV_PDEF); /* invoke all pending watchers */ 675EV_API_DECL void ev_invoke_pending (EV_P); /* invoke all pending watchers */
644 676
645/* 677/*
646 * stop/start the timer handling. 678 * stop/start the timer handling.
647 */ 679 */
648void ev_suspend (EV_PDEF); 680EV_API_DECL void ev_suspend (EV_P) EV_NOEXCEPT;
649void ev_resume (EV_PDEF); 681EV_API_DECL void ev_resume (EV_P) EV_NOEXCEPT;
650#endif 682#endif
651 683
652#endif 684#endif
653 685
654/* these may evaluate ev multiple times, and the other arguments at most once */ 686/* these may evaluate ev multiple times, and the other arguments at most once */
… …
669#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 701#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
670#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 702#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
671#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 703#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
672#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) 704#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
673#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ 705#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
706#define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
674#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */ 707#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
675 708
676#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 709#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
677#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 710#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
678#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) 711#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
… …
682#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 715#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
683#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 716#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
684#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 717#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
685#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) 718#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
686#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) 719#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
720#define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0)
687#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) 721#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
688 722
689#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 723#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
690#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 724#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
691 725
692#define ev_cb(ev) (ev)->cb /* rw */ 726#define ev_cb_(ev) (ev)->cb /* rw */
727#define ev_cb(ev) (memmove (&ev_cb_ (ev), &((ev_watcher *)(ev))->cb, sizeof (ev_cb_ (ev))), (ev)->cb)
693 728
694#if EV_MINPRI == EV_MAXPRI 729#if EV_MINPRI == EV_MAXPRI
695# define ev_priority(ev) ((ev), EV_MINPRI) 730# define ev_priority(ev) ((ev), EV_MINPRI)
696# define ev_set_priority(ev,pri) ((ev), (pri)) 731# define ev_set_priority(ev,pri) ((ev), (pri))
697#else 732#else
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700#endif 735#endif
701 736
702#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) 737#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
703 738
704#ifndef ev_set_cb 739#ifndef ev_set_cb
705# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) 740# define ev_set_cb(ev,cb_) (ev_cb_ (ev) = (cb_), memmove (&((ev_watcher *)(ev))->cb, &ev_cb_ (ev), sizeof (ev_cb_ (ev))))
706#endif 741#endif
707 742
708/* stopping (enabling, adding) a watcher does nothing if it is already running */ 743/* stopping (enabling, adding) a watcher does nothing if it is already running */
709/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 744/* stopping (disabling, deleting) a watcher does nothing unless it's already running */
710#if EV_PROTOTYPES 745#if EV_PROTOTYPES
711 746
712/* feeds an event into a watcher as if the event actually occured */ 747/* feeds an event into a watcher as if the event actually occurred */
713/* accepts any ev_watcher type */ 748/* accepts any ev_watcher type */
714void ev_feed_event (EV_P_ void *w, int revents); 749EV_API_DECL void ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT;
715void ev_feed_fd_event (EV_P_ int fd, int revents); 750EV_API_DECL void ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT;
716#if EV_SIGNAL_ENABLE 751#if EV_SIGNAL_ENABLE
752EV_API_DECL void ev_feed_signal (int signum) EV_NOEXCEPT;
717void ev_feed_signal_event (EV_P_ int signum); 753EV_API_DECL void ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT;
718#endif 754#endif
719void ev_invoke (EV_P_ void *w, int revents); 755EV_API_DECL void ev_invoke (EV_P_ void *w, int revents);
720int ev_clear_pending (EV_P_ void *w); 756EV_API_DECL int ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT;
721 757
722void ev_io_start (EV_P_ ev_io *w); 758EV_API_DECL void ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT;
723void ev_io_stop (EV_P_ ev_io *w); 759EV_API_DECL void ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT;
724 760
725void ev_timer_start (EV_P_ ev_timer *w); 761EV_API_DECL void ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT;
726void ev_timer_stop (EV_P_ ev_timer *w); 762EV_API_DECL void ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT;
727/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 763/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
728void ev_timer_again (EV_P_ ev_timer *w); 764EV_API_DECL void ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT;
729/* return remaining time */ 765/* return remaining time */
730ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w); 766EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT;
731 767
732#if EV_PERIODIC_ENABLE 768#if EV_PERIODIC_ENABLE
733void ev_periodic_start (EV_P_ ev_periodic *w); 769EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT;
734void ev_periodic_stop (EV_P_ ev_periodic *w); 770EV_API_DECL void ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT;
735void ev_periodic_again (EV_P_ ev_periodic *w); 771EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT;
736#endif 772#endif
737 773
738/* only supported in the default loop */ 774/* only supported in the default loop */
739#if EV_SIGNAL_ENABLE 775#if EV_SIGNAL_ENABLE
740void ev_signal_start (EV_P_ ev_signal *w); 776EV_API_DECL void ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT;
741void ev_signal_stop (EV_P_ ev_signal *w); 777EV_API_DECL void ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT;
742#endif 778#endif
743 779
744/* only supported in the default loop */ 780/* only supported in the default loop */
745# if EV_CHILD_ENABLE 781# if EV_CHILD_ENABLE
746void ev_child_start (EV_P_ ev_child *w); 782EV_API_DECL void ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT;
747void ev_child_stop (EV_P_ ev_child *w); 783EV_API_DECL void ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT;
748# endif 784# endif
749 785
750# if EV_STAT_ENABLE 786# if EV_STAT_ENABLE
751void ev_stat_start (EV_P_ ev_stat *w); 787EV_API_DECL void ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT;
752void ev_stat_stop (EV_P_ ev_stat *w); 788EV_API_DECL void ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT;
753void ev_stat_stat (EV_P_ ev_stat *w); 789EV_API_DECL void ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT;
754# endif 790# endif
755 791
756# if EV_IDLE_ENABLE 792# if EV_IDLE_ENABLE
757void ev_idle_start (EV_P_ ev_idle *w); 793EV_API_DECL void ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT;
758void ev_idle_stop (EV_P_ ev_idle *w); 794EV_API_DECL void ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT;
759# endif 795# endif
760 796
761#if EV_PREPARE_ENABLE 797#if EV_PREPARE_ENABLE
762void ev_prepare_start (EV_P_ ev_prepare *w); 798EV_API_DECL void ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT;
763void ev_prepare_stop (EV_P_ ev_prepare *w); 799EV_API_DECL void ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT;
764#endif 800#endif
765 801
766#if EV_CHECK_ENABLE 802#if EV_CHECK_ENABLE
767void ev_check_start (EV_P_ ev_check *w); 803EV_API_DECL void ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT;
768void ev_check_stop (EV_P_ ev_check *w); 804EV_API_DECL void ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT;
769#endif 805#endif
770 806
771# if EV_FORK_ENABLE 807# if EV_FORK_ENABLE
772void ev_fork_start (EV_P_ ev_fork *w); 808EV_API_DECL void ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT;
773void ev_fork_stop (EV_P_ ev_fork *w); 809EV_API_DECL void ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT;
810# endif
811
812# if EV_CLEANUP_ENABLE
813EV_API_DECL void ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT;
814EV_API_DECL void ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT;
774# endif 815# endif
775 816
776# if EV_EMBED_ENABLE 817# if EV_EMBED_ENABLE
777/* only supported when loop to be embedded is in fact embeddable */ 818/* only supported when loop to be embedded is in fact embeddable */
778void ev_embed_start (EV_P_ ev_embed *w); 819EV_API_DECL void ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT;
779void ev_embed_stop (EV_P_ ev_embed *w); 820EV_API_DECL void ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT;
780void ev_embed_sweep (EV_P_ ev_embed *w); 821EV_API_DECL void ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT;
781# endif 822# endif
782 823
783# if EV_ASYNC_ENABLE 824# if EV_ASYNC_ENABLE
784void ev_async_start (EV_P_ ev_async *w); 825EV_API_DECL void ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT;
785void ev_async_stop (EV_P_ ev_async *w); 826EV_API_DECL void ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT;
786void ev_async_send (EV_P_ ev_async *w); 827EV_API_DECL void ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT;
787# endif 828# endif
788 829
789#if EV_COMPAT3 830#if EV_COMPAT3
790 #define EVLOOP_NONBLOCK EVRUN_NOWAIT 831 #define EVLOOP_NONBLOCK EVRUN_NOWAIT
791 #define EVLOOP_ONESHOT EVRUN_ONCE 832 #define EVLOOP_ONESHOT EVRUN_ONCE
… …
793 #define EVUNLOOP_ONE EVBREAK_ONE 834 #define EVUNLOOP_ONE EVBREAK_ONE
794 #define EVUNLOOP_ALL EVBREAK_ALL 835 #define EVUNLOOP_ALL EVBREAK_ALL
795 #if EV_PROTOTYPES 836 #if EV_PROTOTYPES
796 EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); } 837 EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
797 EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); } 838 EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
839 EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
840 EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
798 #if EV_FEATURE_API 841 #if EV_FEATURE_API
799 EV_INLINE void ev_loop_count (EV_P) { ev_iteration (EV_A); } 842 EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); }
800 EV_INLINE void ev_loop_depth (EV_P) { ev_depth (EV_A); } 843 EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); }
801 EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); } 844 EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
802 #endif 845 #endif
803 #endif 846 #endif
804#else 847#else
805 typedef struct ev_loop ev_loop; 848 typedef struct ev_loop ev_loop;
806#endif 849#endif
807 850
808#endif 851#endif
809 852
810#ifdef __cplusplus 853EV_CPP(})
811}
812#endif
813 854
814#endif 855#endif
815 856

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