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Comparing libev/ev.c (file contents):
Revision 1.334 by root, Tue Mar 9 09:00:59 2010 UTC vs.
Revision 1.378 by root, Mon Jun 13 09:52:36 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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,
… …
35 * and other provisions required by the GPL. If you do not delete the 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 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
176#endif 186#endif
187
188EV_CPP(extern "C" {)
177 189
178#ifndef _WIN32 190#ifndef _WIN32
179# include <sys/time.h> 191# include <sys/time.h>
180# include <sys/wait.h> 192# include <sys/wait.h>
181# include <unistd.h> 193# include <unistd.h>
… …
186# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
188# endif 200# endif
189# undef EV_AVOID_STDIO 201# undef EV_AVOID_STDIO
190#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
191 211
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
193 213
194/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
207#elif defined (MAXSIG) 227#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1) 228# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 229#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1) 230# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 231#elif defined (SIGARRAYSIZE)
212# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 233#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 235#else
216# error "unable to find value for NSIG, please report" 236# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line */ 237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
218# define EV_NSIG 65 239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
219#endif 244#endif
220 245
221#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
222# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
223# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
224# else 249# else
225# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
226# endif 251# endif
227#endif 252#endif
228 253
229#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
231# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
232# else 257# else
233# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
234# endif 259# endif
235#endif 260#endif
236 261
… …
238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
239#endif 264#endif
240 265
241#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
242# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
243# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
244# else 269# else
245# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
246# endif 271# endif
247#endif 272#endif
248 273
249#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
250# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
251#endif 276#endif
252 277
253#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
254# ifdef _WIN32 279# ifdef _WIN32
255# define EV_USE_POLL 0 280# define EV_USE_POLL 0
256# else 281# else
257# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
258# endif 283# endif
259#endif 284#endif
260 285
261#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
263# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
264# else 289# else
265# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
266# endif 291# endif
267#endif 292#endif
268 293
… …
274# define EV_USE_PORT 0 299# define EV_USE_PORT 0
275#endif 300#endif
276 301
277#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
279# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
280# else 305# else
281# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
282# endif 307# endif
283#endif 308#endif
284 309
285#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
286# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
287# define EV_PID_HASHSIZE 1
288# else
289# define EV_PID_HASHSIZE 16
290# endif
291#endif 312#endif
292 313
293#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
294# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
295# define EV_INOTIFY_HASHSIZE 1
296# else
297# define EV_INOTIFY_HASHSIZE 16
298# endif
299#endif 316#endif
300 317
301#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
302# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
303# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
304# else 321# else
305# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
306# endif 323# endif
307#endif 324#endif
308 325
309#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
312# else 329# else
313# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
314# endif 331# endif
315#endif 332#endif
316 333
… …
319# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
320# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
321#endif 338#endif
322 339
323#ifndef EV_VERIFY 340#ifndef EV_VERIFY
324# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
325#endif 342#endif
326 343
327#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
328# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
329#endif 346#endif
330 347
331#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
332# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
333#endif 350#endif
334 351
335/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
336/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
337#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
368# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
369# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
370#endif 387#endif
371 388
372#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
373# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
374# include <sys/select.h> 392# include <sys/select.h>
375# endif 393# endif
376#endif 394#endif
377 395
378#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h> 397# include <sys/statfs.h>
381# include <sys/inotify.h> 398# include <sys/inotify.h>
382/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
383# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
384# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
401# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
402# else 419# else
403# define EFD_CLOEXEC 02000000 420# define EFD_CLOEXEC 02000000
404# endif 421# endif
405# endif 422# endif
406# ifdef __cplusplus
407extern "C" {
408# endif
409int (eventfd) (unsigned int initval, int flags); 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
410# ifdef __cplusplus
411}
412# endif
413#endif 424#endif
414 425
415#if EV_USE_SIGNALFD 426#if EV_USE_SIGNALFD
416/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
417# include <stdint.h> 428# include <stdint.h>
… …
423# define SFD_CLOEXEC O_CLOEXEC 434# define SFD_CLOEXEC O_CLOEXEC
424# else 435# else
425# define SFD_CLOEXEC 02000000 436# define SFD_CLOEXEC 02000000
426# endif 437# endif
427# endif 438# endif
428# ifdef __cplusplus
429extern "C" {
430# endif
431int signalfd (int fd, const sigset_t *mask, int flags); 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
432 440
433struct signalfd_siginfo 441struct signalfd_siginfo
434{ 442{
435 uint32_t ssi_signo; 443 uint32_t ssi_signo;
436 char pad[128 - sizeof (uint32_t)]; 444 char pad[128 - sizeof (uint32_t)];
437}; 445};
438# ifdef __cplusplus
439}
440# endif 446#endif
441#endif
442
443 447
444/**/ 448/**/
445 449
446#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
448#else 452#else
449# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
450#endif 454#endif
451 455
452/* 456/*
453 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
454 * It is added to ev_rt_now when scheduling periodics
455 * to ensure progress, time-wise, even when rounding
456 * errors are against us.
457 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
458 * Better solutions welcome.
459 */ 459 */
460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
461 462
462#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
463#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
464 468
465#if __GNUC__ >= 4 469#if __GNUC__ >= 4
466# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
467# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
468#else 472#else
… …
475 479
476#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
477#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
478#define inline_size static inline 482#define inline_size static inline
479 483
480#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
481# define inline_speed static noinline 487# define inline_speed static noinline
482#else
483# define inline_speed static inline
484#endif 488#endif
485 489
486#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
487 491
488#if EV_MINPRI == EV_MAXPRI 492#if EV_MINPRI == EV_MAXPRI
… …
501#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
502#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
503 507
504#if EV_USE_REALTIME 508#if EV_USE_REALTIME
505/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 509/* sig_atomic_t is used to avoid per-thread variables or locking but still */
506/* giving it a reasonably high chance of working on typical architetcures */ 510/* giving it a reasonably high chance of working on typical architectures */
507static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
508#endif 512#endif
509 513
510#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
511static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
522#endif 526#endif
523 527
524#ifdef _WIN32 528#ifdef _WIN32
525# include "ev_win32.c" 529# include "ev_win32.c"
526#endif 530#endif
531
532/*****************************************************************************/
533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
527 621
528/*****************************************************************************/ 622/*****************************************************************************/
529 623
530#if EV_AVOID_STDIO 624#if EV_AVOID_STDIO
531static void noinline 625static void noinline
… …
552 if (syserr_cb) 646 if (syserr_cb)
553 syserr_cb (msg); 647 syserr_cb (msg);
554 else 648 else
555 { 649 {
556#if EV_AVOID_STDIO 650#if EV_AVOID_STDIO
557 const char *err = strerror (errno);
558
559 ev_printerr (msg); 651 ev_printerr (msg);
560 ev_printerr (": "); 652 ev_printerr (": ");
561 ev_printerr (err); 653 ev_printerr (strerror (errno));
562 ev_printerr ("\n"); 654 ev_printerr ("\n");
563#else 655#else
564 perror (msg); 656 perror (msg);
565#endif 657#endif
566 abort (); 658 abort ();
… …
572{ 664{
573#if __GLIBC__ 665#if __GLIBC__
574 return realloc (ptr, size); 666 return realloc (ptr, size);
575#else 667#else
576 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
577 * implement realloc (x, 0) (as required by both ansi c-98 and 669 * implement realloc (x, 0) (as required by both ansi c-89 and
578 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
579 */ 671 */
580 672
581 if (size) 673 if (size)
582 return realloc (ptr, size); 674 return realloc (ptr, size);
… …
600 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
601 693
602 if (!ptr && size) 694 if (!ptr && size)
603 { 695 {
604#if EV_AVOID_STDIO 696#if EV_AVOID_STDIO
605 ev_printerr ("libev: memory allocation failed, aborting.\n"); 697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
606#else 698#else
607 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
608#endif 700#endif
609 abort (); 701 abort ();
610 } 702 }
611 703
612 return ptr; 704 return ptr;
… …
629 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
630 unsigned char unused; 722 unsigned char unused;
631#if EV_USE_EPOLL 723#if EV_USE_EPOLL
632 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
633#endif 725#endif
634#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
635 SOCKET handle; 727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
636#endif 731#endif
637} ANFD; 732} ANFD;
638 733
639/* stores the pending event set for a given watcher */ 734/* stores the pending event set for a given watcher */
640typedef struct 735typedef struct
… …
695 790
696 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
697 792
698#endif 793#endif
699 794
700#if EV_MINIMAL < 2 795#if EV_FEATURE_API
701# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 796# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
702# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 797# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
703# define EV_INVOKE_PENDING invoke_cb (EV_A) 798# define EV_INVOKE_PENDING invoke_cb (EV_A)
704#else 799#else
705# define EV_RELEASE_CB (void)0 800# define EV_RELEASE_CB (void)0
706# define EV_ACQUIRE_CB (void)0 801# define EV_ACQUIRE_CB (void)0
707# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
708#endif 803#endif
709 804
710#define EVUNLOOP_RECURSE 0x80 805#define EVBREAK_RECURSE 0x80
711 806
712/*****************************************************************************/ 807/*****************************************************************************/
713 808
714#ifndef EV_HAVE_EV_TIME 809#ifndef EV_HAVE_EV_TIME
715ev_tstamp 810ev_tstamp
… …
759 if (delay > 0.) 854 if (delay > 0.)
760 { 855 {
761#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
762 struct timespec ts; 857 struct timespec ts;
763 858
764 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
765 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
766
767 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
768#elif defined(_WIN32) 861#elif defined(_WIN32)
769 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
770#else 863#else
771 struct timeval tv; 864 struct timeval tv;
772 865
773 tv.tv_sec = (time_t)delay;
774 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
775
776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
777 /* something not guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
778 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
779 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
780#endif 871#endif
781 } 872 }
782} 873}
783 874
784/*****************************************************************************/ 875/*****************************************************************************/
785 876
786#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 877#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
787 878
788/* find a suitable new size for the given array, */ 879/* find a suitable new size for the given array, */
789/* hopefully by rounding to a ncie-to-malloc size */ 880/* hopefully by rounding to a nice-to-malloc size */
790inline_size int 881inline_size int
791array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
792{ 883{
793 int ncur = cur + 1; 884 int ncur = cur + 1;
794 885
… …
890} 981}
891 982
892/*****************************************************************************/ 983/*****************************************************************************/
893 984
894inline_speed void 985inline_speed void
895fd_event_nc (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
896{ 987{
897 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
898 ev_io *w; 989 ev_io *w;
899 990
900 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 991 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
912fd_event (EV_P_ int fd, int revents) 1003fd_event (EV_P_ int fd, int revents)
913{ 1004{
914 ANFD *anfd = anfds + fd; 1005 ANFD *anfd = anfds + fd;
915 1006
916 if (expect_true (!anfd->reify)) 1007 if (expect_true (!anfd->reify))
917 fd_event_nc (EV_A_ fd, revents); 1008 fd_event_nocheck (EV_A_ fd, revents);
918} 1009}
919 1010
920void 1011void
921ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
922{ 1013{
923 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
924 fd_event_nc (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
925} 1016}
926 1017
927/* make sure the external fd watch events are in-sync */ 1018/* make sure the external fd watch events are in-sync */
928/* with the kernel/libev internal state */ 1019/* with the kernel/libev internal state */
929inline_size void 1020inline_size void
930fd_reify (EV_P) 1021fd_reify (EV_P)
931{ 1022{
932 int i; 1023 int i;
933 1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
1049
934 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
935 { 1051 {
936 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
937 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
938 ev_io *w; 1054 ev_io *w;
939 1055
940 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
941 1058
942 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
943 events |= (unsigned char)w->events;
944 1060
945#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
946 if (events)
947 { 1062 {
948 unsigned long arg; 1063 anfd->events = 0;
949 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1064
950 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1066 anfd->events |= (unsigned char)w->events;
1067
1068 if (o_events != anfd->events)
1069 o_reify = EV__IOFDSET; /* actually |= */
951 } 1070 }
952#endif
953 1071
954 { 1072 if (o_reify & EV__IOFDSET)
955 unsigned char o_events = anfd->events;
956 unsigned char o_reify = anfd->reify;
957
958 anfd->reify = 0;
959 anfd->events = events;
960
961 if (o_events != events || o_reify & EV__IOFDSET)
962 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
963 }
964 } 1074 }
965 1075
966 fdchangecnt = 0; 1076 fdchangecnt = 0;
967} 1077}
968 1078
… …
992 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
993 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
994 } 1104 }
995} 1105}
996 1106
997/* check whether the given fd is atcually valid, for error recovery */ 1107/* check whether the given fd is actually valid, for error recovery */
998inline_size int 1108inline_size int
999fd_valid (int fd) 1109fd_valid (int fd)
1000{ 1110{
1001#ifdef _WIN32 1111#ifdef _WIN32
1002 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
… …
1044 anfds [fd].emask = 0; 1154 anfds [fd].emask = 0;
1045 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1046 } 1156 }
1047} 1157}
1048 1158
1159/* used to prepare libev internal fd's */
1160/* this is not fork-safe */
1161inline_speed void
1162fd_intern (int fd)
1163{
1164#ifdef _WIN32
1165 unsigned long arg = 1;
1166 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1167#else
1168 fcntl (fd, F_SETFD, FD_CLOEXEC);
1169 fcntl (fd, F_SETFL, O_NONBLOCK);
1170#endif
1171}
1172
1049/*****************************************************************************/ 1173/*****************************************************************************/
1050 1174
1051/* 1175/*
1052 * the heap functions want a real array index. array index 0 uis guaranteed to not 1176 * the heap functions want a real array index. array index 0 is guaranteed to not
1053 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1177 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1054 * the branching factor of the d-tree. 1178 * the branching factor of the d-tree.
1055 */ 1179 */
1056 1180
1057/* 1181/*
… …
1205 1329
1206static ANSIG signals [EV_NSIG - 1]; 1330static ANSIG signals [EV_NSIG - 1];
1207 1331
1208/*****************************************************************************/ 1332/*****************************************************************************/
1209 1333
1210/* used to prepare libev internal fd's */ 1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1211/* this is not fork-safe */
1212inline_speed void
1213fd_intern (int fd)
1214{
1215#ifdef _WIN32
1216 unsigned long arg = 1;
1217 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1218#else
1219 fcntl (fd, F_SETFD, FD_CLOEXEC);
1220 fcntl (fd, F_SETFL, O_NONBLOCK);
1221#endif
1222}
1223 1335
1224static void noinline 1336static void noinline
1225evpipe_init (EV_P) 1337evpipe_init (EV_P)
1226{ 1338{
1227 if (!ev_is_active (&pipe_w)) 1339 if (!ev_is_active (&pipe_w))
1228 { 1340 {
1229#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1230 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1231 if (evfd < 0 && errno == EINVAL) 1343 if (evfd < 0 && errno == EINVAL)
1232 evfd = eventfd (0, 0); 1344 evfd = eventfd (0, 0);
1233 1345
1234 if (evfd >= 0) 1346 if (evfd >= 0)
… …
1236 evpipe [0] = -1; 1348 evpipe [0] = -1;
1237 fd_intern (evfd); /* doing it twice doesn't hurt */ 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
1238 ev_io_set (&pipe_w, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
1239 } 1351 }
1240 else 1352 else
1241#endif 1353# endif
1242 { 1354 {
1243 while (pipe (evpipe)) 1355 while (pipe (evpipe))
1244 ev_syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
1245 1357
1246 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
… …
1256inline_size void 1368inline_size void
1257evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1258{ 1370{
1259 if (!*flag) 1371 if (!*flag)
1260 { 1372 {
1261 int old_errno = errno; /* save errno because write might clobber it */
1262
1263 *flag = 1; 1373 *flag = 1;
1264 1374
1375 pipe_write_skipped = 1;
1376
1377 if (pipe_write_wanted)
1378 {
1379 int old_errno = errno; /* save errno because write will clobber it */
1380 char dummy;
1381
1382 pipe_write_skipped = 0;
1383
1265#if EV_USE_EVENTFD 1384#if EV_USE_EVENTFD
1266 if (evfd >= 0) 1385 if (evfd >= 0)
1267 { 1386 {
1268 uint64_t counter = 1; 1387 uint64_t counter = 1;
1269 write (evfd, &counter, sizeof (uint64_t)); 1388 write (evfd, &counter, sizeof (uint64_t));
1389 }
1390 else
1391#endif
1392 {
1393 /* win32 people keep sending patches that change this write() to send() */
1394 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1395 /* so when you think this write should be a send instead, please find out */
1396 /* where your send() is from - it's definitely not the microsoft send, and */
1397 /* tell me. thank you. */
1398 write (evpipe [1], &dummy, 1);
1399 }
1400
1401 errno = old_errno;
1270 } 1402 }
1271 else
1272#endif
1273 write (evpipe [1], &old_errno, 1);
1274
1275 errno = old_errno;
1276 } 1403 }
1277} 1404}
1278 1405
1279/* called whenever the libev signal pipe */ 1406/* called whenever the libev signal pipe */
1280/* got some events (signal, async) */ 1407/* got some events (signal, async) */
1281static void 1408static void
1282pipecb (EV_P_ ev_io *iow, int revents) 1409pipecb (EV_P_ ev_io *iow, int revents)
1283{ 1410{
1284 int i; 1411 int i;
1285 1412
1413 if (revents & EV_READ)
1414 {
1286#if EV_USE_EVENTFD 1415#if EV_USE_EVENTFD
1287 if (evfd >= 0) 1416 if (evfd >= 0)
1288 { 1417 {
1289 uint64_t counter; 1418 uint64_t counter;
1290 read (evfd, &counter, sizeof (uint64_t)); 1419 read (evfd, &counter, sizeof (uint64_t));
1291 } 1420 }
1292 else 1421 else
1293#endif 1422#endif
1294 { 1423 {
1295 char dummy; 1424 char dummy;
1425 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1296 read (evpipe [0], &dummy, 1); 1426 read (evpipe [0], &dummy, 1);
1427 }
1297 } 1428 }
1298 1429
1430 pipe_write_skipped = 0;
1431
1432#if EV_SIGNAL_ENABLE
1299 if (sig_pending) 1433 if (sig_pending)
1300 { 1434 {
1301 sig_pending = 0; 1435 sig_pending = 0;
1302 1436
1303 for (i = EV_NSIG - 1; i--; ) 1437 for (i = EV_NSIG - 1; i--; )
1304 if (expect_false (signals [i].pending)) 1438 if (expect_false (signals [i].pending))
1305 ev_feed_signal_event (EV_A_ i + 1); 1439 ev_feed_signal_event (EV_A_ i + 1);
1306 } 1440 }
1441#endif
1307 1442
1308#if EV_ASYNC_ENABLE 1443#if EV_ASYNC_ENABLE
1309 if (async_pending) 1444 if (async_pending)
1310 { 1445 {
1311 async_pending = 0; 1446 async_pending = 0;
… …
1320#endif 1455#endif
1321} 1456}
1322 1457
1323/*****************************************************************************/ 1458/*****************************************************************************/
1324 1459
1460void
1461ev_feed_signal (int signum)
1462{
1463#if EV_MULTIPLICITY
1464 EV_P = signals [signum - 1].loop;
1465
1466 if (!EV_A)
1467 return;
1468#endif
1469
1470 evpipe_init (EV_A);
1471
1472 signals [signum - 1].pending = 1;
1473 evpipe_write (EV_A_ &sig_pending);
1474}
1475
1325static void 1476static void
1326ev_sighandler (int signum) 1477ev_sighandler (int signum)
1327{ 1478{
1328#if EV_MULTIPLICITY
1329 EV_P = signals [signum - 1].loop;
1330#endif
1331
1332#ifdef _WIN32 1479#ifdef _WIN32
1333 signal (signum, ev_sighandler); 1480 signal (signum, ev_sighandler);
1334#endif 1481#endif
1335 1482
1336 signals [signum - 1].pending = 1; 1483 ev_feed_signal (signum);
1337 evpipe_write (EV_A_ &sig_pending);
1338} 1484}
1339 1485
1340void noinline 1486void noinline
1341ev_feed_signal_event (EV_P_ int signum) 1487ev_feed_signal_event (EV_P_ int signum)
1342{ 1488{
… …
1379 break; 1525 break;
1380 } 1526 }
1381} 1527}
1382#endif 1528#endif
1383 1529
1530#endif
1531
1384/*****************************************************************************/ 1532/*****************************************************************************/
1385 1533
1534#if EV_CHILD_ENABLE
1386static WL childs [EV_PID_HASHSIZE]; 1535static WL childs [EV_PID_HASHSIZE];
1387
1388#ifndef _WIN32
1389 1536
1390static ev_signal childev; 1537static ev_signal childev;
1391 1538
1392#ifndef WIFCONTINUED 1539#ifndef WIFCONTINUED
1393# define WIFCONTINUED(status) 0 1540# define WIFCONTINUED(status) 0
… …
1398child_reap (EV_P_ int chain, int pid, int status) 1545child_reap (EV_P_ int chain, int pid, int status)
1399{ 1546{
1400 ev_child *w; 1547 ev_child *w;
1401 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1548 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1402 1549
1403 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1550 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1404 { 1551 {
1405 if ((w->pid == pid || !w->pid) 1552 if ((w->pid == pid || !w->pid)
1406 && (!traced || (w->flags & 1))) 1553 && (!traced || (w->flags & 1)))
1407 { 1554 {
1408 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1555 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1433 /* make sure we are called again until all children have been reaped */ 1580 /* make sure we are called again until all children have been reaped */
1434 /* we need to do it this way so that the callback gets called before we continue */ 1581 /* we need to do it this way so that the callback gets called before we continue */
1435 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1582 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1436 1583
1437 child_reap (EV_A_ pid, pid, status); 1584 child_reap (EV_A_ pid, pid, status);
1438 if (EV_PID_HASHSIZE > 1) 1585 if ((EV_PID_HASHSIZE) > 1)
1439 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1586 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1440} 1587}
1441 1588
1442#endif 1589#endif
1443 1590
1444/*****************************************************************************/ 1591/*****************************************************************************/
1445 1592
1593#if EV_USE_IOCP
1594# include "ev_iocp.c"
1595#endif
1446#if EV_USE_PORT 1596#if EV_USE_PORT
1447# include "ev_port.c" 1597# include "ev_port.c"
1448#endif 1598#endif
1449#if EV_USE_KQUEUE 1599#if EV_USE_KQUEUE
1450# include "ev_kqueue.c" 1600# include "ev_kqueue.c"
… …
1510#ifdef __APPLE__ 1660#ifdef __APPLE__
1511 /* only select works correctly on that "unix-certified" platform */ 1661 /* only select works correctly on that "unix-certified" platform */
1512 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1662 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1513 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1663 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1514#endif 1664#endif
1665#ifdef __FreeBSD__
1666 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1667#endif
1515 1668
1516 return flags; 1669 return flags;
1517} 1670}
1518 1671
1519unsigned int 1672unsigned int
1520ev_embeddable_backends (void) 1673ev_embeddable_backends (void)
1521{ 1674{
1522 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1675 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1523 1676
1524 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1677 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1525 /* please fix it and tell me how to detect the fix */ 1678 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1526 flags &= ~EVBACKEND_EPOLL; 1679 flags &= ~EVBACKEND_EPOLL;
1527 1680
1528 return flags; 1681 return flags;
1529} 1682}
1530 1683
1531unsigned int 1684unsigned int
1532ev_backend (EV_P) 1685ev_backend (EV_P)
1533{ 1686{
1534 return backend; 1687 return backend;
1535} 1688}
1536 1689
1537#if EV_MINIMAL < 2 1690#if EV_FEATURE_API
1538unsigned int 1691unsigned int
1539ev_loop_count (EV_P) 1692ev_iteration (EV_P)
1540{ 1693{
1541 return loop_count; 1694 return loop_count;
1542} 1695}
1543 1696
1544unsigned int 1697unsigned int
1545ev_loop_depth (EV_P) 1698ev_depth (EV_P)
1546{ 1699{
1547 return loop_depth; 1700 return loop_depth;
1548} 1701}
1549 1702
1550void 1703void
… …
1587static void noinline 1740static void noinline
1588loop_init (EV_P_ unsigned int flags) 1741loop_init (EV_P_ unsigned int flags)
1589{ 1742{
1590 if (!backend) 1743 if (!backend)
1591 { 1744 {
1745 origflags = flags;
1746
1592#if EV_USE_REALTIME 1747#if EV_USE_REALTIME
1593 if (!have_realtime) 1748 if (!have_realtime)
1594 { 1749 {
1595 struct timespec ts; 1750 struct timespec ts;
1596 1751
… …
1618 if (!(flags & EVFLAG_NOENV) 1773 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure () 1774 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS")) 1775 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS")); 1776 flags = atoi (getenv ("LIBEV_FLAGS"));
1622 1777
1623 ev_rt_now = ev_time (); 1778 ev_rt_now = ev_time ();
1624 mn_now = get_clock (); 1779 mn_now = get_clock ();
1625 now_floor = mn_now; 1780 now_floor = mn_now;
1626 rtmn_diff = ev_rt_now - mn_now; 1781 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_MINIMAL < 2 1782#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending; 1783 invoke_cb = ev_invoke_pending;
1629#endif 1784#endif
1630 1785
1631 io_blocktime = 0.; 1786 io_blocktime = 0.;
1632 timeout_blocktime = 0.; 1787 timeout_blocktime = 0.;
1633 backend = 0; 1788 backend = 0;
1634 backend_fd = -1; 1789 backend_fd = -1;
1635 sig_pending = 0; 1790 sig_pending = 0;
1636#if EV_ASYNC_ENABLE 1791#if EV_ASYNC_ENABLE
1637 async_pending = 0; 1792 async_pending = 0;
1638#endif 1793#endif
1794 pipe_write_skipped = 0;
1795 pipe_write_wanted = 0;
1639#if EV_USE_INOTIFY 1796#if EV_USE_INOTIFY
1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1797 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1641#endif 1798#endif
1642#if EV_USE_SIGNALFD 1799#if EV_USE_SIGNALFD
1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1800 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1644#endif 1801#endif
1645 1802
1646 if (!(flags & 0x0000ffffU)) 1803 if (!(flags & EVBACKEND_MASK))
1647 flags |= ev_recommended_backends (); 1804 flags |= ev_recommended_backends ();
1648 1805
1806#if EV_USE_IOCP
1807 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1808#endif
1649#if EV_USE_PORT 1809#if EV_USE_PORT
1650 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1810 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1651#endif 1811#endif
1652#if EV_USE_KQUEUE 1812#if EV_USE_KQUEUE
1653 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1813 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1662 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1822 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1663#endif 1823#endif
1664 1824
1665 ev_prepare_init (&pending_w, pendingcb); 1825 ev_prepare_init (&pending_w, pendingcb);
1666 1826
1827#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1667 ev_init (&pipe_w, pipecb); 1828 ev_init (&pipe_w, pipecb);
1668 ev_set_priority (&pipe_w, EV_MAXPRI); 1829 ev_set_priority (&pipe_w, EV_MAXPRI);
1830#endif
1669 } 1831 }
1670} 1832}
1671 1833
1672/* free up a loop structure */ 1834/* free up a loop structure */
1673static void noinline 1835void
1674loop_destroy (EV_P) 1836ev_loop_destroy (EV_P)
1675{ 1837{
1676 int i; 1838 int i;
1839
1840#if EV_MULTIPLICITY
1841 /* mimic free (0) */
1842 if (!EV_A)
1843 return;
1844#endif
1845
1846#if EV_CLEANUP_ENABLE
1847 /* queue cleanup watchers (and execute them) */
1848 if (expect_false (cleanupcnt))
1849 {
1850 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1851 EV_INVOKE_PENDING;
1852 }
1853#endif
1854
1855#if EV_CHILD_ENABLE
1856 if (ev_is_active (&childev))
1857 {
1858 ev_ref (EV_A); /* child watcher */
1859 ev_signal_stop (EV_A_ &childev);
1860 }
1861#endif
1677 1862
1678 if (ev_is_active (&pipe_w)) 1863 if (ev_is_active (&pipe_w))
1679 { 1864 {
1680 /*ev_ref (EV_A);*/ 1865 /*ev_ref (EV_A);*/
1681 /*ev_io_stop (EV_A_ &pipe_w);*/ 1866 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1703#endif 1888#endif
1704 1889
1705 if (backend_fd >= 0) 1890 if (backend_fd >= 0)
1706 close (backend_fd); 1891 close (backend_fd);
1707 1892
1893#if EV_USE_IOCP
1894 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1895#endif
1708#if EV_USE_PORT 1896#if EV_USE_PORT
1709 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1710#endif 1898#endif
1711#if EV_USE_KQUEUE 1899#if EV_USE_KQUEUE
1712 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1739 array_free (periodic, EMPTY); 1927 array_free (periodic, EMPTY);
1740#endif 1928#endif
1741#if EV_FORK_ENABLE 1929#if EV_FORK_ENABLE
1742 array_free (fork, EMPTY); 1930 array_free (fork, EMPTY);
1743#endif 1931#endif
1932#if EV_CLEANUP_ENABLE
1933 array_free (cleanup, EMPTY);
1934#endif
1744 array_free (prepare, EMPTY); 1935 array_free (prepare, EMPTY);
1745 array_free (check, EMPTY); 1936 array_free (check, EMPTY);
1746#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1747 array_free (async, EMPTY); 1938 array_free (async, EMPTY);
1748#endif 1939#endif
1749 1940
1750 backend = 0; 1941 backend = 0;
1942
1943#if EV_MULTIPLICITY
1944 if (ev_is_default_loop (EV_A))
1945#endif
1946 ev_default_loop_ptr = 0;
1947#if EV_MULTIPLICITY
1948 else
1949 ev_free (EV_A);
1950#endif
1751} 1951}
1752 1952
1753#if EV_USE_INOTIFY 1953#if EV_USE_INOTIFY
1754inline_size void infy_fork (EV_P); 1954inline_size void infy_fork (EV_P);
1755#endif 1955#endif
… …
1770 infy_fork (EV_A); 1970 infy_fork (EV_A);
1771#endif 1971#endif
1772 1972
1773 if (ev_is_active (&pipe_w)) 1973 if (ev_is_active (&pipe_w))
1774 { 1974 {
1775 /* this "locks" the handlers against writing to the pipe */ 1975 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1776 /* while we modify the fd vars */
1777 sig_pending = 1;
1778#if EV_ASYNC_ENABLE
1779 async_pending = 1;
1780#endif
1781 1976
1782 ev_ref (EV_A); 1977 ev_ref (EV_A);
1783 ev_io_stop (EV_A_ &pipe_w); 1978 ev_io_stop (EV_A_ &pipe_w);
1784 1979
1785#if EV_USE_EVENTFD 1980#if EV_USE_EVENTFD
… …
1791 { 1986 {
1792 EV_WIN32_CLOSE_FD (evpipe [0]); 1987 EV_WIN32_CLOSE_FD (evpipe [0]);
1793 EV_WIN32_CLOSE_FD (evpipe [1]); 1988 EV_WIN32_CLOSE_FD (evpipe [1]);
1794 } 1989 }
1795 1990
1991#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 evpipe_init (EV_A); 1992 evpipe_init (EV_A);
1797 /* now iterate over everything, in case we missed something */ 1993 /* now iterate over everything, in case we missed something */
1798 pipecb (EV_A_ &pipe_w, EV_READ); 1994 pipecb (EV_A_ &pipe_w, EV_READ);
1995#endif
1799 } 1996 }
1800 1997
1801 postfork = 0; 1998 postfork = 0;
1802} 1999}
1803 2000
… …
1812 loop_init (EV_A_ flags); 2009 loop_init (EV_A_ flags);
1813 2010
1814 if (ev_backend (EV_A)) 2011 if (ev_backend (EV_A))
1815 return EV_A; 2012 return EV_A;
1816 2013
2014 ev_free (EV_A);
1817 return 0; 2015 return 0;
1818} 2016}
1819 2017
1820void
1821ev_loop_destroy (EV_P)
1822{
1823 loop_destroy (EV_A);
1824 ev_free (loop);
1825}
1826
1827void
1828ev_loop_fork (EV_P)
1829{
1830 postfork = 1; /* must be in line with ev_default_fork */
1831}
1832#endif /* multiplicity */ 2018#endif /* multiplicity */
1833 2019
1834#if EV_VERIFY 2020#if EV_VERIFY
1835static void noinline 2021static void noinline
1836verify_watcher (EV_P_ W w) 2022verify_watcher (EV_P_ W w)
… …
1865 verify_watcher (EV_A_ ws [cnt]); 2051 verify_watcher (EV_A_ ws [cnt]);
1866 } 2052 }
1867} 2053}
1868#endif 2054#endif
1869 2055
1870#if EV_MINIMAL < 2 2056#if EV_FEATURE_API
1871void 2057void
1872ev_loop_verify (EV_P) 2058ev_verify (EV_P)
1873{ 2059{
1874#if EV_VERIFY 2060#if EV_VERIFY
1875 int i; 2061 int i;
1876 WL w; 2062 WL w;
1877 2063
… …
1911#if EV_FORK_ENABLE 2097#if EV_FORK_ENABLE
1912 assert (forkmax >= forkcnt); 2098 assert (forkmax >= forkcnt);
1913 array_verify (EV_A_ (W *)forks, forkcnt); 2099 array_verify (EV_A_ (W *)forks, forkcnt);
1914#endif 2100#endif
1915 2101
2102#if EV_CLEANUP_ENABLE
2103 assert (cleanupmax >= cleanupcnt);
2104 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2105#endif
2106
1916#if EV_ASYNC_ENABLE 2107#if EV_ASYNC_ENABLE
1917 assert (asyncmax >= asynccnt); 2108 assert (asyncmax >= asynccnt);
1918 array_verify (EV_A_ (W *)asyncs, asynccnt); 2109 array_verify (EV_A_ (W *)asyncs, asynccnt);
1919#endif 2110#endif
1920 2111
2112#if EV_PREPARE_ENABLE
1921 assert (preparemax >= preparecnt); 2113 assert (preparemax >= preparecnt);
1922 array_verify (EV_A_ (W *)prepares, preparecnt); 2114 array_verify (EV_A_ (W *)prepares, preparecnt);
2115#endif
1923 2116
2117#if EV_CHECK_ENABLE
1924 assert (checkmax >= checkcnt); 2118 assert (checkmax >= checkcnt);
1925 array_verify (EV_A_ (W *)checks, checkcnt); 2119 array_verify (EV_A_ (W *)checks, checkcnt);
2120#endif
1926 2121
1927# if 0 2122# if 0
2123#if EV_CHILD_ENABLE
1928 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2124 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1929 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2125 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2126#endif
1930# endif 2127# endif
1931#endif 2128#endif
1932} 2129}
1933#endif 2130#endif
1934 2131
1935#if EV_MULTIPLICITY 2132#if EV_MULTIPLICITY
1936struct ev_loop * 2133struct ev_loop *
1937ev_default_loop_init (unsigned int flags)
1938#else 2134#else
1939int 2135int
2136#endif
1940ev_default_loop (unsigned int flags) 2137ev_default_loop (unsigned int flags)
1941#endif
1942{ 2138{
1943 if (!ev_default_loop_ptr) 2139 if (!ev_default_loop_ptr)
1944 { 2140 {
1945#if EV_MULTIPLICITY 2141#if EV_MULTIPLICITY
1946 EV_P = ev_default_loop_ptr = &default_loop_struct; 2142 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1950 2146
1951 loop_init (EV_A_ flags); 2147 loop_init (EV_A_ flags);
1952 2148
1953 if (ev_backend (EV_A)) 2149 if (ev_backend (EV_A))
1954 { 2150 {
1955#ifndef _WIN32 2151#if EV_CHILD_ENABLE
1956 ev_signal_init (&childev, childcb, SIGCHLD); 2152 ev_signal_init (&childev, childcb, SIGCHLD);
1957 ev_set_priority (&childev, EV_MAXPRI); 2153 ev_set_priority (&childev, EV_MAXPRI);
1958 ev_signal_start (EV_A_ &childev); 2154 ev_signal_start (EV_A_ &childev);
1959 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2155 ev_unref (EV_A); /* child watcher should not keep loop alive */
1960#endif 2156#endif
… …
1965 2161
1966 return ev_default_loop_ptr; 2162 return ev_default_loop_ptr;
1967} 2163}
1968 2164
1969void 2165void
1970ev_default_destroy (void) 2166ev_loop_fork (EV_P)
1971{ 2167{
1972#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr;
1974#endif
1975
1976 ev_default_loop_ptr = 0;
1977
1978#ifndef _WIN32
1979 ev_ref (EV_A); /* child watcher */
1980 ev_signal_stop (EV_A_ &childev);
1981#endif
1982
1983 loop_destroy (EV_A);
1984}
1985
1986void
1987ev_default_fork (void)
1988{
1989#if EV_MULTIPLICITY
1990 EV_P = ev_default_loop_ptr;
1991#endif
1992
1993 postfork = 1; /* must be in line with ev_loop_fork */ 2168 postfork = 1; /* must be in line with ev_default_fork */
1994} 2169}
1995 2170
1996/*****************************************************************************/ 2171/*****************************************************************************/
1997 2172
1998void 2173void
… …
2020 2195
2021 for (pri = NUMPRI; pri--; ) 2196 for (pri = NUMPRI; pri--; )
2022 while (pendingcnt [pri]) 2197 while (pendingcnt [pri])
2023 { 2198 {
2024 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2199 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2025
2026 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2027 /* ^ this is no longer true, as pending_w could be here */
2028 2200
2029 p->w->pending = 0; 2201 p->w->pending = 0;
2030 EV_CB_INVOKE (p->w, p->events); 2202 EV_CB_INVOKE (p->w, p->events);
2031 EV_FREQUENT_CHECK; 2203 EV_FREQUENT_CHECK;
2032 } 2204 }
… …
2089 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
2090 feed_reverse (EV_A_ (W)w); 2262 feed_reverse (EV_A_ (W)w);
2091 } 2263 }
2092 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2264 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2093 2265
2094 feed_reverse_done (EV_A_ EV_TIMEOUT); 2266 feed_reverse_done (EV_A_ EV_TIMER);
2095 } 2267 }
2096} 2268}
2097 2269
2098#if EV_PERIODIC_ENABLE 2270#if EV_PERIODIC_ENABLE
2271
2272static void noinline
2273periodic_recalc (EV_P_ ev_periodic *w)
2274{
2275 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2276 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2277
2278 /* the above almost always errs on the low side */
2279 while (at <= ev_rt_now)
2280 {
2281 ev_tstamp nat = at + w->interval;
2282
2283 /* when resolution fails us, we use ev_rt_now */
2284 if (expect_false (nat == at))
2285 {
2286 at = ev_rt_now;
2287 break;
2288 }
2289
2290 at = nat;
2291 }
2292
2293 ev_at (w) = at;
2294}
2295
2099/* make periodics pending */ 2296/* make periodics pending */
2100inline_size void 2297inline_size void
2101periodics_reify (EV_P) 2298periodics_reify (EV_P)
2102{ 2299{
2103 EV_FREQUENT_CHECK; 2300 EV_FREQUENT_CHECK;
… …
2122 ANHE_at_cache (periodics [HEAP0]); 2319 ANHE_at_cache (periodics [HEAP0]);
2123 downheap (periodics, periodiccnt, HEAP0); 2320 downheap (periodics, periodiccnt, HEAP0);
2124 } 2321 }
2125 else if (w->interval) 2322 else if (w->interval)
2126 { 2323 {
2127 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2324 periodic_recalc (EV_A_ w);
2128 /* if next trigger time is not sufficiently in the future, put it there */
2129 /* this might happen because of floating point inexactness */
2130 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2131 {
2132 ev_at (w) += w->interval;
2133
2134 /* if interval is unreasonably low we might still have a time in the past */
2135 /* so correct this. this will make the periodic very inexact, but the user */
2136 /* has effectively asked to get triggered more often than possible */
2137 if (ev_at (w) < ev_rt_now)
2138 ev_at (w) = ev_rt_now;
2139 }
2140
2141 ANHE_at_cache (periodics [HEAP0]); 2325 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 2326 downheap (periodics, periodiccnt, HEAP0);
2143 } 2327 }
2144 else 2328 else
2145 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2329 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2152 feed_reverse_done (EV_A_ EV_PERIODIC); 2336 feed_reverse_done (EV_A_ EV_PERIODIC);
2153 } 2337 }
2154} 2338}
2155 2339
2156/* simply recalculate all periodics */ 2340/* simply recalculate all periodics */
2157/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2341/* TODO: maybe ensure that at least one event happens when jumping forward? */
2158static void noinline 2342static void noinline
2159periodics_reschedule (EV_P) 2343periodics_reschedule (EV_P)
2160{ 2344{
2161 int i; 2345 int i;
2162 2346
… …
2166 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2350 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2167 2351
2168 if (w->reschedule_cb) 2352 if (w->reschedule_cb)
2169 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2353 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2170 else if (w->interval) 2354 else if (w->interval)
2171 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2355 periodic_recalc (EV_A_ w);
2172 2356
2173 ANHE_at_cache (periodics [i]); 2357 ANHE_at_cache (periodics [i]);
2174 } 2358 }
2175 2359
2176 reheap (periodics, periodiccnt); 2360 reheap (periodics, periodiccnt);
… …
2223 * doesn't hurt either as we only do this on time-jumps or 2407 * doesn't hurt either as we only do this on time-jumps or
2224 * in the unlikely event of having been preempted here. 2408 * in the unlikely event of having been preempted here.
2225 */ 2409 */
2226 for (i = 4; --i; ) 2410 for (i = 4; --i; )
2227 { 2411 {
2412 ev_tstamp diff;
2228 rtmn_diff = ev_rt_now - mn_now; 2413 rtmn_diff = ev_rt_now - mn_now;
2229 2414
2415 diff = odiff - rtmn_diff;
2416
2230 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2417 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2231 return; /* all is well */ 2418 return; /* all is well */
2232 2419
2233 ev_rt_now = ev_time (); 2420 ev_rt_now = ev_time ();
2234 mn_now = get_clock (); 2421 mn_now = get_clock ();
2235 now_floor = mn_now; 2422 now_floor = mn_now;
… …
2258 mn_now = ev_rt_now; 2445 mn_now = ev_rt_now;
2259 } 2446 }
2260} 2447}
2261 2448
2262void 2449void
2263ev_loop (EV_P_ int flags) 2450ev_run (EV_P_ int flags)
2264{ 2451{
2265#if EV_MINIMAL < 2 2452#if EV_FEATURE_API
2266 ++loop_depth; 2453 ++loop_depth;
2267#endif 2454#endif
2268 2455
2269 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2456 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2270 2457
2271 loop_done = EVUNLOOP_CANCEL; 2458 loop_done = EVBREAK_CANCEL;
2272 2459
2273 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2460 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2274 2461
2275 do 2462 do
2276 { 2463 {
2277#if EV_VERIFY >= 2 2464#if EV_VERIFY >= 2
2278 ev_loop_verify (EV_A); 2465 ev_verify (EV_A);
2279#endif 2466#endif
2280 2467
2281#ifndef _WIN32 2468#ifndef _WIN32
2282 if (expect_false (curpid)) /* penalise the forking check even more */ 2469 if (expect_false (curpid)) /* penalise the forking check even more */
2283 if (expect_false (getpid () != curpid)) 2470 if (expect_false (getpid () != curpid))
… …
2295 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2482 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2296 EV_INVOKE_PENDING; 2483 EV_INVOKE_PENDING;
2297 } 2484 }
2298#endif 2485#endif
2299 2486
2487#if EV_PREPARE_ENABLE
2300 /* queue prepare watchers (and execute them) */ 2488 /* queue prepare watchers (and execute them) */
2301 if (expect_false (preparecnt)) 2489 if (expect_false (preparecnt))
2302 { 2490 {
2303 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2491 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2304 EV_INVOKE_PENDING; 2492 EV_INVOKE_PENDING;
2305 } 2493 }
2494#endif
2306 2495
2307 if (expect_false (loop_done)) 2496 if (expect_false (loop_done))
2308 break; 2497 break;
2309 2498
2310 /* we might have forked, so reify kernel state if necessary */ 2499 /* we might have forked, so reify kernel state if necessary */
… …
2317 /* calculate blocking time */ 2506 /* calculate blocking time */
2318 { 2507 {
2319 ev_tstamp waittime = 0.; 2508 ev_tstamp waittime = 0.;
2320 ev_tstamp sleeptime = 0.; 2509 ev_tstamp sleeptime = 0.;
2321 2510
2511 /* remember old timestamp for io_blocktime calculation */
2512 ev_tstamp prev_mn_now = mn_now;
2513
2514 /* update time to cancel out callback processing overhead */
2515 time_update (EV_A_ 1e100);
2516
2517 /* from now on, we want a pipe-wake-up */
2518 pipe_write_wanted = 1;
2519
2322 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2520 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2323 { 2521 {
2324 /* remember old timestamp for io_blocktime calculation */
2325 ev_tstamp prev_mn_now = mn_now;
2326
2327 /* update time to cancel out callback processing overhead */
2328 time_update (EV_A_ 1e100);
2329
2330 waittime = MAX_BLOCKTIME; 2522 waittime = MAX_BLOCKTIME;
2331 2523
2332 if (timercnt) 2524 if (timercnt)
2333 { 2525 {
2334 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2526 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2335 if (waittime > to) waittime = to; 2527 if (waittime > to) waittime = to;
2336 } 2528 }
2337 2529
2338#if EV_PERIODIC_ENABLE 2530#if EV_PERIODIC_ENABLE
2339 if (periodiccnt) 2531 if (periodiccnt)
2340 { 2532 {
2341 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2533 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2342 if (waittime > to) waittime = to; 2534 if (waittime > to) waittime = to;
2343 } 2535 }
2344#endif 2536#endif
2345 2537
2346 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2538 /* don't let timeouts decrease the waittime below timeout_blocktime */
2347 if (expect_false (waittime < timeout_blocktime)) 2539 if (expect_false (waittime < timeout_blocktime))
2348 waittime = timeout_blocktime; 2540 waittime = timeout_blocktime;
2541
2542 /* at this point, we NEED to wait, so we have to ensure */
2543 /* to pass a minimum nonzero value to the backend */
2544 if (expect_false (waittime < backend_mintime))
2545 waittime = backend_mintime;
2349 2546
2350 /* extra check because io_blocktime is commonly 0 */ 2547 /* extra check because io_blocktime is commonly 0 */
2351 if (expect_false (io_blocktime)) 2548 if (expect_false (io_blocktime))
2352 { 2549 {
2353 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2550 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2354 2551
2355 if (sleeptime > waittime - backend_fudge) 2552 if (sleeptime > waittime - backend_mintime)
2356 sleeptime = waittime - backend_fudge; 2553 sleeptime = waittime - backend_mintime;
2357 2554
2358 if (expect_true (sleeptime > 0.)) 2555 if (expect_true (sleeptime > 0.))
2359 { 2556 {
2360 ev_sleep (sleeptime); 2557 ev_sleep (sleeptime);
2361 waittime -= sleeptime; 2558 waittime -= sleeptime;
2362 } 2559 }
2363 } 2560 }
2364 } 2561 }
2365 2562
2366#if EV_MINIMAL < 2 2563#if EV_FEATURE_API
2367 ++loop_count; 2564 ++loop_count;
2368#endif 2565#endif
2369 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2566 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2370 backend_poll (EV_A_ waittime); 2567 backend_poll (EV_A_ waittime);
2371 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2568 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2569
2570 pipe_write_wanted = 0;
2571
2572 if (pipe_write_skipped)
2573 {
2574 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2575 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2576 }
2577
2372 2578
2373 /* update ev_rt_now, do magic */ 2579 /* update ev_rt_now, do magic */
2374 time_update (EV_A_ waittime + sleeptime); 2580 time_update (EV_A_ waittime + sleeptime);
2375 } 2581 }
2376 2582
… …
2383#if EV_IDLE_ENABLE 2589#if EV_IDLE_ENABLE
2384 /* queue idle watchers unless other events are pending */ 2590 /* queue idle watchers unless other events are pending */
2385 idle_reify (EV_A); 2591 idle_reify (EV_A);
2386#endif 2592#endif
2387 2593
2594#if EV_CHECK_ENABLE
2388 /* queue check watchers, to be executed first */ 2595 /* queue check watchers, to be executed first */
2389 if (expect_false (checkcnt)) 2596 if (expect_false (checkcnt))
2390 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2597 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2598#endif
2391 2599
2392 EV_INVOKE_PENDING; 2600 EV_INVOKE_PENDING;
2393 } 2601 }
2394 while (expect_true ( 2602 while (expect_true (
2395 activecnt 2603 activecnt
2396 && !loop_done 2604 && !loop_done
2397 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2605 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2398 )); 2606 ));
2399 2607
2400 if (loop_done == EVUNLOOP_ONE) 2608 if (loop_done == EVBREAK_ONE)
2401 loop_done = EVUNLOOP_CANCEL; 2609 loop_done = EVBREAK_CANCEL;
2402 2610
2403#if EV_MINIMAL < 2 2611#if EV_FEATURE_API
2404 --loop_depth; 2612 --loop_depth;
2405#endif 2613#endif
2406} 2614}
2407 2615
2408void 2616void
2409ev_unloop (EV_P_ int how) 2617ev_break (EV_P_ int how)
2410{ 2618{
2411 loop_done = how; 2619 loop_done = how;
2412} 2620}
2413 2621
2414void 2622void
… …
2562 EV_FREQUENT_CHECK; 2770 EV_FREQUENT_CHECK;
2563 2771
2564 wlist_del (&anfds[w->fd].head, (WL)w); 2772 wlist_del (&anfds[w->fd].head, (WL)w);
2565 ev_stop (EV_A_ (W)w); 2773 ev_stop (EV_A_ (W)w);
2566 2774
2567 fd_change (EV_A_ w->fd, 1); 2775 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2568 2776
2569 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
2570} 2778}
2571 2779
2572void noinline 2780void noinline
… …
2664 if (w->reschedule_cb) 2872 if (w->reschedule_cb)
2665 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2873 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2666 else if (w->interval) 2874 else if (w->interval)
2667 { 2875 {
2668 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2876 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2669 /* this formula differs from the one in periodic_reify because we do not always round up */ 2877 periodic_recalc (EV_A_ w);
2670 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2671 } 2878 }
2672 else 2879 else
2673 ev_at (w) = w->offset; 2880 ev_at (w) = w->offset;
2674 2881
2675 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
… …
2724#endif 2931#endif
2725 2932
2726#ifndef SA_RESTART 2933#ifndef SA_RESTART
2727# define SA_RESTART 0 2934# define SA_RESTART 0
2728#endif 2935#endif
2936
2937#if EV_SIGNAL_ENABLE
2729 2938
2730void noinline 2939void noinline
2731ev_signal_start (EV_P_ ev_signal *w) 2940ev_signal_start (EV_P_ ev_signal *w)
2732{ 2941{
2733 if (expect_false (ev_is_active (w))) 2942 if (expect_false (ev_is_active (w)))
… …
2794 sa.sa_handler = ev_sighandler; 3003 sa.sa_handler = ev_sighandler;
2795 sigfillset (&sa.sa_mask); 3004 sigfillset (&sa.sa_mask);
2796 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3005 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2797 sigaction (w->signum, &sa, 0); 3006 sigaction (w->signum, &sa, 0);
2798 3007
3008 if (origflags & EVFLAG_NOSIGMASK)
3009 {
2799 sigemptyset (&sa.sa_mask); 3010 sigemptyset (&sa.sa_mask);
2800 sigaddset (&sa.sa_mask, w->signum); 3011 sigaddset (&sa.sa_mask, w->signum);
2801 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3012 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3013 }
2802#endif 3014#endif
2803 } 3015 }
2804 3016
2805 EV_FREQUENT_CHECK; 3017 EV_FREQUENT_CHECK;
2806} 3018}
… …
2840 } 3052 }
2841 3053
2842 EV_FREQUENT_CHECK; 3054 EV_FREQUENT_CHECK;
2843} 3055}
2844 3056
3057#endif
3058
3059#if EV_CHILD_ENABLE
3060
2845void 3061void
2846ev_child_start (EV_P_ ev_child *w) 3062ev_child_start (EV_P_ ev_child *w)
2847{ 3063{
2848#if EV_MULTIPLICITY 3064#if EV_MULTIPLICITY
2849 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3065 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2852 return; 3068 return;
2853 3069
2854 EV_FREQUENT_CHECK; 3070 EV_FREQUENT_CHECK;
2855 3071
2856 ev_start (EV_A_ (W)w, 1); 3072 ev_start (EV_A_ (W)w, 1);
2857 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3073 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2858 3074
2859 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2860} 3076}
2861 3077
2862void 3078void
… …
2866 if (expect_false (!ev_is_active (w))) 3082 if (expect_false (!ev_is_active (w)))
2867 return; 3083 return;
2868 3084
2869 EV_FREQUENT_CHECK; 3085 EV_FREQUENT_CHECK;
2870 3086
2871 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3087 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2872 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2873 3089
2874 EV_FREQUENT_CHECK; 3090 EV_FREQUENT_CHECK;
2875} 3091}
3092
3093#endif
2876 3094
2877#if EV_STAT_ENABLE 3095#if EV_STAT_ENABLE
2878 3096
2879# ifdef _WIN32 3097# ifdef _WIN32
2880# undef lstat 3098# undef lstat
… …
2941 if (!pend || pend == path) 3159 if (!pend || pend == path)
2942 break; 3160 break;
2943 3161
2944 *pend = 0; 3162 *pend = 0;
2945 w->wd = inotify_add_watch (fs_fd, path, mask); 3163 w->wd = inotify_add_watch (fs_fd, path, mask);
2946 } 3164 }
2947 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3165 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2948 } 3166 }
2949 } 3167 }
2950 3168
2951 if (w->wd >= 0) 3169 if (w->wd >= 0)
2952 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3170 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2953 3171
2954 /* now re-arm timer, if required */ 3172 /* now re-arm timer, if required */
2955 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3173 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2956 ev_timer_again (EV_A_ &w->timer); 3174 ev_timer_again (EV_A_ &w->timer);
2957 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3175 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2965 3183
2966 if (wd < 0) 3184 if (wd < 0)
2967 return; 3185 return;
2968 3186
2969 w->wd = -2; 3187 w->wd = -2;
2970 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3188 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2971 wlist_del (&fs_hash [slot].head, (WL)w); 3189 wlist_del (&fs_hash [slot].head, (WL)w);
2972 3190
2973 /* remove this watcher, if others are watching it, they will rearm */ 3191 /* remove this watcher, if others are watching it, they will rearm */
2974 inotify_rm_watch (fs_fd, wd); 3192 inotify_rm_watch (fs_fd, wd);
2975} 3193}
… …
2977static void noinline 3195static void noinline
2978infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3196infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2979{ 3197{
2980 if (slot < 0) 3198 if (slot < 0)
2981 /* overflow, need to check for all hash slots */ 3199 /* overflow, need to check for all hash slots */
2982 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3200 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2983 infy_wd (EV_A_ slot, wd, ev); 3201 infy_wd (EV_A_ slot, wd, ev);
2984 else 3202 else
2985 { 3203 {
2986 WL w_; 3204 WL w_;
2987 3205
2988 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3206 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2989 { 3207 {
2990 ev_stat *w = (ev_stat *)w_; 3208 ev_stat *w = (ev_stat *)w_;
2991 w_ = w_->next; /* lets us remove this watcher and all before it */ 3209 w_ = w_->next; /* lets us remove this watcher and all before it */
2992 3210
2993 if (w->wd == wd || wd == -1) 3211 if (w->wd == wd || wd == -1)
2994 { 3212 {
2995 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3213 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2996 { 3214 {
2997 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3215 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2998 w->wd = -1; 3216 w->wd = -1;
2999 infy_add (EV_A_ w); /* re-add, no matter what */ 3217 infy_add (EV_A_ w); /* re-add, no matter what */
3000 } 3218 }
3001 3219
3002 stat_timer_cb (EV_A_ &w->timer, 0); 3220 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3016 { 3234 {
3017 struct inotify_event *ev = (struct inotify_event *)(buf + ofs); 3235 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3018 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3236 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3019 ofs += sizeof (struct inotify_event) + ev->len; 3237 ofs += sizeof (struct inotify_event) + ev->len;
3020 } 3238 }
3021}
3022
3023inline_size unsigned int
3024ev_linux_version (void)
3025{
3026 struct utsname buf;
3027 unsigned int v;
3028 int i;
3029 char *p = buf.release;
3030
3031 if (uname (&buf))
3032 return 0;
3033
3034 for (i = 3+1; --i; )
3035 {
3036 unsigned int c = 0;
3037
3038 for (;;)
3039 {
3040 if (*p >= '0' && *p <= '9')
3041 c = c * 10 + *p++ - '0';
3042 else
3043 {
3044 p += *p == '.';
3045 break;
3046 }
3047 }
3048
3049 v = (v << 8) | c;
3050 }
3051
3052 return v;
3053} 3239}
3054 3240
3055inline_size void 3241inline_size void
3056ev_check_2625 (EV_P) 3242ev_check_2625 (EV_P)
3057{ 3243{
… …
3116 ev_io_set (&fs_w, fs_fd, EV_READ); 3302 ev_io_set (&fs_w, fs_fd, EV_READ);
3117 ev_io_start (EV_A_ &fs_w); 3303 ev_io_start (EV_A_ &fs_w);
3118 ev_unref (EV_A); 3304 ev_unref (EV_A);
3119 } 3305 }
3120 3306
3121 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3307 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3122 { 3308 {
3123 WL w_ = fs_hash [slot].head; 3309 WL w_ = fs_hash [slot].head;
3124 fs_hash [slot].head = 0; 3310 fs_hash [slot].head = 0;
3125 3311
3126 while (w_) 3312 while (w_)
… …
3301 3487
3302 EV_FREQUENT_CHECK; 3488 EV_FREQUENT_CHECK;
3303} 3489}
3304#endif 3490#endif
3305 3491
3492#if EV_PREPARE_ENABLE
3306void 3493void
3307ev_prepare_start (EV_P_ ev_prepare *w) 3494ev_prepare_start (EV_P_ ev_prepare *w)
3308{ 3495{
3309 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
3310 return; 3497 return;
… …
3336 3523
3337 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
3338 3525
3339 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
3340} 3527}
3528#endif
3341 3529
3530#if EV_CHECK_ENABLE
3342void 3531void
3343ev_check_start (EV_P_ ev_check *w) 3532ev_check_start (EV_P_ ev_check *w)
3344{ 3533{
3345 if (expect_false (ev_is_active (w))) 3534 if (expect_false (ev_is_active (w)))
3346 return; 3535 return;
… …
3372 3561
3373 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
3374 3563
3375 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
3376} 3565}
3566#endif
3377 3567
3378#if EV_EMBED_ENABLE 3568#if EV_EMBED_ENABLE
3379void noinline 3569void noinline
3380ev_embed_sweep (EV_P_ ev_embed *w) 3570ev_embed_sweep (EV_P_ ev_embed *w)
3381{ 3571{
3382 ev_loop (w->other, EVLOOP_NONBLOCK); 3572 ev_run (w->other, EVRUN_NOWAIT);
3383} 3573}
3384 3574
3385static void 3575static void
3386embed_io_cb (EV_P_ ev_io *io, int revents) 3576embed_io_cb (EV_P_ ev_io *io, int revents)
3387{ 3577{
3388 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3578 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3389 3579
3390 if (ev_cb (w)) 3580 if (ev_cb (w))
3391 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3581 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3392 else 3582 else
3393 ev_loop (w->other, EVLOOP_NONBLOCK); 3583 ev_run (w->other, EVRUN_NOWAIT);
3394} 3584}
3395 3585
3396static void 3586static void
3397embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3587embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3398{ 3588{
… …
3402 EV_P = w->other; 3592 EV_P = w->other;
3403 3593
3404 while (fdchangecnt) 3594 while (fdchangecnt)
3405 { 3595 {
3406 fd_reify (EV_A); 3596 fd_reify (EV_A);
3407 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3597 ev_run (EV_A_ EVRUN_NOWAIT);
3408 } 3598 }
3409 } 3599 }
3410} 3600}
3411 3601
3412static void 3602static void
… …
3418 3608
3419 { 3609 {
3420 EV_P = w->other; 3610 EV_P = w->other;
3421 3611
3422 ev_loop_fork (EV_A); 3612 ev_loop_fork (EV_A);
3423 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3613 ev_run (EV_A_ EVRUN_NOWAIT);
3424 } 3614 }
3425 3615
3426 ev_embed_start (EV_A_ w); 3616 ev_embed_start (EV_A_ w);
3427} 3617}
3428 3618
… …
3520 3710
3521 EV_FREQUENT_CHECK; 3711 EV_FREQUENT_CHECK;
3522} 3712}
3523#endif 3713#endif
3524 3714
3525#if EV_ASYNC_ENABLE 3715#if EV_CLEANUP_ENABLE
3526void 3716void
3527ev_async_start (EV_P_ ev_async *w) 3717ev_cleanup_start (EV_P_ ev_cleanup *w)
3528{ 3718{
3529 if (expect_false (ev_is_active (w))) 3719 if (expect_false (ev_is_active (w)))
3530 return; 3720 return;
3721
3722 EV_FREQUENT_CHECK;
3723
3724 ev_start (EV_A_ (W)w, ++cleanupcnt);
3725 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3726 cleanups [cleanupcnt - 1] = w;
3727
3728 /* cleanup watchers should never keep a refcount on the loop */
3729 ev_unref (EV_A);
3730 EV_FREQUENT_CHECK;
3731}
3732
3733void
3734ev_cleanup_stop (EV_P_ ev_cleanup *w)
3735{
3736 clear_pending (EV_A_ (W)w);
3737 if (expect_false (!ev_is_active (w)))
3738 return;
3739
3740 EV_FREQUENT_CHECK;
3741 ev_ref (EV_A);
3742
3743 {
3744 int active = ev_active (w);
3745
3746 cleanups [active - 1] = cleanups [--cleanupcnt];
3747 ev_active (cleanups [active - 1]) = active;
3748 }
3749
3750 ev_stop (EV_A_ (W)w);
3751
3752 EV_FREQUENT_CHECK;
3753}
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757void
3758ev_async_start (EV_P_ ev_async *w)
3759{
3760 if (expect_false (ev_is_active (w)))
3761 return;
3762
3763 w->sent = 0;
3531 3764
3532 evpipe_init (EV_A); 3765 evpipe_init (EV_A);
3533 3766
3534 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
3535 3768
… …
3613{ 3846{
3614 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3847 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3615 3848
3616 if (expect_false (!once)) 3849 if (expect_false (!once))
3617 { 3850 {
3618 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3851 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3619 return; 3852 return;
3620 } 3853 }
3621 3854
3622 once->cb = cb; 3855 once->cb = cb;
3623 once->arg = arg; 3856 once->arg = arg;
… …
3710 if (types & EV_ASYNC) 3943 if (types & EV_ASYNC)
3711 for (i = asynccnt; i--; ) 3944 for (i = asynccnt; i--; )
3712 cb (EV_A_ EV_ASYNC, asyncs [i]); 3945 cb (EV_A_ EV_ASYNC, asyncs [i]);
3713#endif 3946#endif
3714 3947
3948#if EV_PREPARE_ENABLE
3715 if (types & EV_PREPARE) 3949 if (types & EV_PREPARE)
3716 for (i = preparecnt; i--; ) 3950 for (i = preparecnt; i--; )
3717#if EV_EMBED_ENABLE 3951# if EV_EMBED_ENABLE
3718 if (ev_cb (prepares [i]) != embed_prepare_cb) 3952 if (ev_cb (prepares [i]) != embed_prepare_cb)
3719#endif 3953# endif
3720 cb (EV_A_ EV_PREPARE, prepares [i]); 3954 cb (EV_A_ EV_PREPARE, prepares [i]);
3955#endif
3721 3956
3957#if EV_CHECK_ENABLE
3722 if (types & EV_CHECK) 3958 if (types & EV_CHECK)
3723 for (i = checkcnt; i--; ) 3959 for (i = checkcnt; i--; )
3724 cb (EV_A_ EV_CHECK, checks [i]); 3960 cb (EV_A_ EV_CHECK, checks [i]);
3961#endif
3725 3962
3963#if EV_SIGNAL_ENABLE
3726 if (types & EV_SIGNAL) 3964 if (types & EV_SIGNAL)
3727 for (i = 0; i < EV_NSIG - 1; ++i) 3965 for (i = 0; i < EV_NSIG - 1; ++i)
3728 for (wl = signals [i].head; wl; ) 3966 for (wl = signals [i].head; wl; )
3729 { 3967 {
3730 wn = wl->next; 3968 wn = wl->next;
3731 cb (EV_A_ EV_SIGNAL, wl); 3969 cb (EV_A_ EV_SIGNAL, wl);
3732 wl = wn; 3970 wl = wn;
3733 } 3971 }
3972#endif
3734 3973
3974#if EV_CHILD_ENABLE
3735 if (types & EV_CHILD) 3975 if (types & EV_CHILD)
3736 for (i = EV_PID_HASHSIZE; i--; ) 3976 for (i = (EV_PID_HASHSIZE); i--; )
3737 for (wl = childs [i]; wl; ) 3977 for (wl = childs [i]; wl; )
3738 { 3978 {
3739 wn = wl->next; 3979 wn = wl->next;
3740 cb (EV_A_ EV_CHILD, wl); 3980 cb (EV_A_ EV_CHILD, wl);
3741 wl = wn; 3981 wl = wn;
3742 } 3982 }
3983#endif
3743/* EV_STAT 0x00001000 /* stat data changed */ 3984/* EV_STAT 0x00001000 /* stat data changed */
3744/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3985/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3745} 3986}
3746#endif 3987#endif
3747 3988
3748#if EV_MULTIPLICITY 3989#if EV_MULTIPLICITY
3749 #include "ev_wrap.h" 3990 #include "ev_wrap.h"
3750#endif 3991#endif
3751 3992
3752#ifdef __cplusplus 3993EV_CPP(})
3753}
3754#endif
3755 3994

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