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Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.377 by root, Wed Jun 8 13:11:55 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 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
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
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
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
166#endif 186#endif
187
188EV_CPP(extern "C" {)
167 189
168#ifndef _WIN32 190#ifndef _WIN32
169# include <sys/time.h> 191# include <sys/time.h>
170# include <sys/wait.h> 192# include <sys/wait.h>
171# include <unistd.h> 193# include <unistd.h>
… …
174# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 197# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
178# endif 200# endif
201# undef EV_AVOID_STDIO
179#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
180 211
181/* 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 */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
182 245
183#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 249# else
187# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
188# endif 251# endif
189#endif 252#endif
190 253
191#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 257# else
195# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
196# endif 259# endif
197#endif 260#endif
198 261
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 264#endif
202 265
203#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 269# else
207# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
208# endif 271# endif
209#endif 272#endif
210 273
211#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 276#endif
214 277
215#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
216# ifdef _WIN32 279# ifdef _WIN32
217# define EV_USE_POLL 0 280# define EV_USE_POLL 0
218# else 281# else
219# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 283# endif
221#endif 284#endif
222 285
223#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 289# else
227# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
228# endif 291# endif
229#endif 292#endif
230 293
… …
236# define EV_USE_PORT 0 299# define EV_USE_PORT 0
237#endif 300#endif
238 301
239#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 305# else
243# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
244# endif 307# endif
245#endif 308#endif
246 309
247#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 312#endif
254 313
255#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 316#endif
262 317
263#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 321# else
267# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
268# endif 331# endif
269#endif 332#endif
270 333
271#if 0 /* debugging */ 334#if 0 /* debugging */
272# define EV_VERIFY 3 335# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
275#endif 338#endif
276 339
277#ifndef EV_VERIFY 340#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 342#endif
280 343
281#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 346#endif
284 347
285#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 350#endif
288 351
289/* 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, */
290/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
300# endif 363# endif
301#endif 364#endif
302 365
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
305#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
308#endif 377#endif
309 378
… …
316# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
318#endif 387#endif
319 388
320#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 392# include <sys/select.h>
323# endif 393# endif
324#endif 394#endif
325 395
326#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 397# include <sys/statfs.h>
329# include <sys/inotify.h> 398# include <sys/inotify.h>
330/* 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 */
331# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
339#endif 408#endif
340 409
341#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 412# include <stdint.h>
344# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
345extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
346# endif 415# endif
347int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 417# ifdef O_CLOEXEC
349} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
350# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
351#endif 446#endif
352 447
353/**/ 448/**/
354 449
355#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 452#else
358# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
359#endif 454#endif
360 455
361/* 456/*
362 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 459 */
369#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 */
370 462
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 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)
374 468
375#if __GNUC__ >= 4 469#if __GNUC__ >= 4
376# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
378#else 472#else
… …
385 479
386#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline 482#define inline_size static inline
389 483
390#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
391# define inline_speed static noinline 487# define inline_speed static noinline
488#endif
489
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
491
492#if EV_MINPRI == EV_MAXPRI
493# define ABSPRI(w) (((W)w), 0)
392#else 494#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 495# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
496#endif
398 497
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 498#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 499#define EMPTY2(a,b) /* used to suppress some warnings */
401 500
402typedef ev_watcher *W; 501typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
408 507
409#if EV_USE_REALTIME 508#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 510/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 512#endif
414 513
415#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 516#endif
418 517
518#ifndef EV_FD_TO_WIN32_HANDLE
519# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
520#endif
521#ifndef EV_WIN32_HANDLE_TO_FD
522# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
523#endif
524#ifndef EV_WIN32_CLOSE_FD
525# define EV_WIN32_CLOSE_FD(fd) close (fd)
526#endif
527
419#ifdef _WIN32 528#ifdef _WIN32
420# include "ev_win32.c" 529# include "ev_win32.c"
421#endif 530#endif
422 531
423/*****************************************************************************/ 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}
621
622/*****************************************************************************/
623
624#if EV_AVOID_STDIO
625static void noinline
626ev_printerr (const char *msg)
627{
628 write (STDERR_FILENO, msg, strlen (msg));
629}
630#endif
424 631
425static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
426 633
427void 634void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
… …
438 645
439 if (syserr_cb) 646 if (syserr_cb)
440 syserr_cb (msg); 647 syserr_cb (msg);
441 else 648 else
442 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
443 perror (msg); 656 perror (msg);
657#endif
444 abort (); 658 abort ();
445 } 659 }
446} 660}
447 661
448static void * 662static void *
449ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
450{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
451 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
454 */ 671 */
455 672
456 if (size) 673 if (size)
457 return realloc (ptr, size); 674 return realloc (ptr, size);
458 675
459 free (ptr); 676 free (ptr);
460 return 0; 677 return 0;
678#endif
461} 679}
462 680
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 682
465void 683void
… …
473{ 691{
474 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
475 693
476 if (!ptr && size) 694 if (!ptr && size)
477 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
479 abort (); 701 abort ();
480 } 702 }
481 703
482 return ptr; 704 return ptr;
483} 705}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
487 709
488/*****************************************************************************/ 710/*****************************************************************************/
489 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
490/* file descriptor info structure */ 715/* file descriptor info structure */
491typedef struct 716typedef struct
492{ 717{
493 WL head; 718 WL head;
494 unsigned char events; /* the events watched for */ 719 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 720 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 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 */
497 unsigned char unused; 722 unsigned char unused;
498#if EV_USE_EPOLL 723#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 725#endif
501#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
503#endif 731#endif
504} ANFD; 732} ANFD;
505 733
506/* stores the pending event set for a given watcher */ 734/* stores the pending event set for a given watcher */
507typedef struct 735typedef struct
… …
562 790
563 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
564 792
565#endif 793#endif
566 794
795#if EV_FEATURE_API
796# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
797# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
798# define EV_INVOKE_PENDING invoke_cb (EV_A)
799#else
800# define EV_RELEASE_CB (void)0
801# define EV_ACQUIRE_CB (void)0
802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
803#endif
804
805#define EVBREAK_RECURSE 0x80
806
567/*****************************************************************************/ 807/*****************************************************************************/
568 808
569#ifndef EV_HAVE_EV_TIME 809#ifndef EV_HAVE_EV_TIME
570ev_tstamp 810ev_tstamp
571ev_time (void) 811ev_time (void)
… …
614 if (delay > 0.) 854 if (delay > 0.)
615 { 855 {
616#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
617 struct timespec ts; 857 struct timespec ts;
618 858
619 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
623#elif defined(_WIN32) 861#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
625#else 863#else
626 struct timeval tv; 864 struct timeval tv;
627 865
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* 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 */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
635#endif 871#endif
636 } 872 }
637} 873}
638 874
639/*****************************************************************************/ 875/*****************************************************************************/
640 876
641#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 */
642 878
643/* find a suitable new size for the given array, */ 879/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 880/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 881inline_size int
646array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
647{ 883{
648 int ncur = cur + 1; 884 int ncur = cur + 1;
649 885
… …
745} 981}
746 982
747/*****************************************************************************/ 983/*****************************************************************************/
748 984
749inline_speed void 985inline_speed void
750fd_event (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
751{ 987{
752 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
753 ev_io *w; 989 ev_io *w;
754 990
755 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)
… …
759 if (ev) 995 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 996 ev_feed_event (EV_A_ (W)w, ev);
761 } 997 }
762} 998}
763 999
1000/* do not submit kernel events for fds that have reify set */
1001/* because that means they changed while we were polling for new events */
1002inline_speed void
1003fd_event (EV_P_ int fd, int revents)
1004{
1005 ANFD *anfd = anfds + fd;
1006
1007 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents);
1009}
1010
764void 1011void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 1013{
767 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
769} 1016}
770 1017
771/* make sure the external fd watch events are in-sync */ 1018/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1019/* with the kernel/libev internal state */
773inline_size void 1020inline_size void
774fd_reify (EV_P) 1021fd_reify (EV_P)
775{ 1022{
776 int i; 1023 int i;
777 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
778 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
779 { 1051 {
780 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
782 ev_io *w; 1054 ev_io *w;
783 1055
784 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
785 1058
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1060
789#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1062 {
792 unsigned long arg; 1063 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1064
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1066 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1067
797 #endif 1068 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1069 o_reify = EV__IOFDSET; /* actually |= */
799 } 1070 }
800#endif
801 1071
802 { 1072 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1074 }
813 1075
814 fdchangecnt = 0; 1076 fdchangecnt = 0;
815} 1077}
816 1078
… …
840 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
841 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);
842 } 1104 }
843} 1105}
844 1106
845/* check whether the given fd is atcually valid, for error recovery */ 1107/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1108inline_size int
847fd_valid (int fd) 1109fd_valid (int fd)
848{ 1110{
849#ifdef _WIN32 1111#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1113#else
852 return fcntl (fd, F_GETFD) != -1; 1114 return fcntl (fd, F_GETFD) != -1;
853#endif 1115#endif
854} 1116}
855 1117
… …
873 1135
874 for (fd = anfdmax; fd--; ) 1136 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1137 if (anfds [fd].events)
876 { 1138 {
877 fd_kill (EV_A_ fd); 1139 fd_kill (EV_A_ fd);
878 return; 1140 break;
879 } 1141 }
880} 1142}
881 1143
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1144/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1145static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1150 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1151 if (anfds [fd].events)
890 { 1152 {
891 anfds [fd].events = 0; 1153 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1154 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1156 }
895} 1157}
896 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
897/*****************************************************************************/ 1173/*****************************************************************************/
898 1174
899/* 1175/*
900 * 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
901 * 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
902 * the branching factor of the d-tree. 1178 * the branching factor of the d-tree.
903 */ 1179 */
904 1180
905/* 1181/*
… …
973 1249
974 for (;;) 1250 for (;;)
975 { 1251 {
976 int c = k << 1; 1252 int c = k << 1;
977 1253
978 if (c > N + HEAP0 - 1) 1254 if (c >= N + HEAP0)
979 break; 1255 break;
980 1256
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1257 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1258 ? 1 : 0;
983 1259
… …
1019 1295
1020/* move an element suitably so it is in a correct place */ 1296/* move an element suitably so it is in a correct place */
1021inline_size void 1297inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1298adjustheap (ANHE *heap, int N, int k)
1023{ 1299{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1300 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1301 upheap (heap, k);
1026 else 1302 else
1027 downheap (heap, N, k); 1303 downheap (heap, N, k);
1028} 1304}
1029 1305
… …
1042/*****************************************************************************/ 1318/*****************************************************************************/
1043 1319
1044/* associate signal watchers to a signal signal */ 1320/* associate signal watchers to a signal signal */
1045typedef struct 1321typedef struct
1046{ 1322{
1323 EV_ATOMIC_T pending;
1324#if EV_MULTIPLICITY
1325 EV_P;
1326#endif
1047 WL head; 1327 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1328} ANSIG;
1050 1329
1051static ANSIG *signals; 1330static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1331
1056/*****************************************************************************/ 1332/*****************************************************************************/
1057 1333
1058/* used to prepare libev internal fd's */ 1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1335
1072static void noinline 1336static void noinline
1073evpipe_init (EV_P) 1337evpipe_init (EV_P)
1074{ 1338{
1075 if (!ev_is_active (&pipe_w)) 1339 if (!ev_is_active (&pipe_w))
1076 { 1340 {
1077#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1344 evfd = eventfd (0, 0);
1345
1346 if (evfd >= 0)
1079 { 1347 {
1080 evpipe [0] = -1; 1348 evpipe [0] = -1;
1081 fd_intern (evfd); 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1351 }
1084 else 1352 else
1085#endif 1353# endif
1086 { 1354 {
1087 while (pipe (evpipe)) 1355 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
1089 1357
1090 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
… …
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1370{
1103 if (!*flag) 1371 if (!*flag)
1104 { 1372 {
1105 int old_errno = errno; /* save errno because write might clobber it */ 1373 int old_errno = errno; /* save errno because write might clobber it */
1374 char dummy;
1106 1375
1107 *flag = 1; 1376 *flag = 1;
1108 1377
1109#if EV_USE_EVENTFD 1378#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1379 if (evfd >= 0)
… …
1112 uint64_t counter = 1; 1381 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1382 write (evfd, &counter, sizeof (uint64_t));
1114 } 1383 }
1115 else 1384 else
1116#endif 1385#endif
1386 /* win32 people keep sending patches that change this write() to send() */
1387 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1388 /* so when you think this write should be a send instead, please find out */
1389 /* where your send() is from - it's definitely not the microsoft send, and */
1390 /* tell me. thank you. */
1117 write (evpipe [1], &old_errno, 1); 1391 write (evpipe [1], &dummy, 1);
1118 1392
1119 errno = old_errno; 1393 errno = old_errno;
1120 } 1394 }
1121} 1395}
1122 1396
1123/* called whenever the libev signal pipe */ 1397/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1398/* got some events (signal, async) */
1125static void 1399static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1400pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1401{
1402 int i;
1403
1128#if EV_USE_EVENTFD 1404#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1405 if (evfd >= 0)
1130 { 1406 {
1131 uint64_t counter; 1407 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1408 read (evfd, &counter, sizeof (uint64_t));
1133 } 1409 }
1134 else 1410 else
1135#endif 1411#endif
1136 { 1412 {
1137 char dummy; 1413 char dummy;
1414 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 read (evpipe [0], &dummy, 1); 1415 read (evpipe [0], &dummy, 1);
1139 } 1416 }
1140 1417
1141 if (gotsig && ev_is_default_loop (EV_A)) 1418#if EV_SIGNAL_ENABLE
1142 { 1419 if (sig_pending)
1143 int signum; 1420 {
1144 gotsig = 0; 1421 sig_pending = 0;
1145 1422
1146 for (signum = signalmax; signum--; ) 1423 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1424 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1425 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1426 }
1427#endif
1150 1428
1151#if EV_ASYNC_ENABLE 1429#if EV_ASYNC_ENABLE
1152 if (gotasync) 1430 if (async_pending)
1153 { 1431 {
1154 int i; 1432 async_pending = 0;
1155 gotasync = 0;
1156 1433
1157 for (i = asynccnt; i--; ) 1434 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1435 if (asyncs [i]->sent)
1159 { 1436 {
1160 asyncs [i]->sent = 0; 1437 asyncs [i]->sent = 0;
… …
1164#endif 1441#endif
1165} 1442}
1166 1443
1167/*****************************************************************************/ 1444/*****************************************************************************/
1168 1445
1446void
1447ev_feed_signal (int signum)
1448{
1449#if EV_MULTIPLICITY
1450 EV_P = signals [signum - 1].loop;
1451
1452 if (!EV_A)
1453 return;
1454#endif
1455
1456 signals [signum - 1].pending = 1;
1457 evpipe_write (EV_A_ &sig_pending);
1458}
1459
1169static void 1460static void
1170ev_sighandler (int signum) 1461ev_sighandler (int signum)
1171{ 1462{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32 1463#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1464 signal (signum, ev_sighandler);
1178#endif 1465#endif
1179 1466
1180 signals [signum - 1].gotsig = 1; 1467 ev_feed_signal (signum);
1181 evpipe_write (EV_A_ &gotsig);
1182} 1468}
1183 1469
1184void noinline 1470void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1471ev_feed_signal_event (EV_P_ int signum)
1186{ 1472{
1187 WL w; 1473 WL w;
1188 1474
1475 if (expect_false (signum <= 0 || signum > EV_NSIG))
1476 return;
1477
1478 --signum;
1479
1189#if EV_MULTIPLICITY 1480#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1481 /* it is permissible to try to feed a signal to the wrong loop */
1191#endif 1482 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1483
1193 --signum; 1484 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1485 return;
1486#endif
1197 1487
1198 signals [signum].gotsig = 0; 1488 signals [signum].pending = 0;
1199 1489
1200 for (w = signals [signum].head; w; w = w->next) 1490 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1491 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1492}
1203 1493
1494#if EV_USE_SIGNALFD
1495static void
1496sigfdcb (EV_P_ ev_io *iow, int revents)
1497{
1498 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1499
1500 for (;;)
1501 {
1502 ssize_t res = read (sigfd, si, sizeof (si));
1503
1504 /* not ISO-C, as res might be -1, but works with SuS */
1505 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1506 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1507
1508 if (res < (ssize_t)sizeof (si))
1509 break;
1510 }
1511}
1512#endif
1513
1514#endif
1515
1204/*****************************************************************************/ 1516/*****************************************************************************/
1205 1517
1518#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1519static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1520
1210static ev_signal childev; 1521static ev_signal childev;
1211 1522
1212#ifndef WIFCONTINUED 1523#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1524# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 1529child_reap (EV_P_ int chain, int pid, int status)
1219{ 1530{
1220 ev_child *w; 1531 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1532 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1533
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 1535 {
1225 if ((w->pid == pid || !w->pid) 1536 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1537 && (!traced || (w->flags & 1)))
1227 { 1538 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1539 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 1564 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 1565 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1566 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 1567
1257 child_reap (EV_A_ pid, pid, status); 1568 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 1569 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1570 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 1571}
1261 1572
1262#endif 1573#endif
1263 1574
1264/*****************************************************************************/ 1575/*****************************************************************************/
1265 1576
1577#if EV_USE_IOCP
1578# include "ev_iocp.c"
1579#endif
1266#if EV_USE_PORT 1580#if EV_USE_PORT
1267# include "ev_port.c" 1581# include "ev_port.c"
1268#endif 1582#endif
1269#if EV_USE_KQUEUE 1583#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 1584# include "ev_kqueue.c"
… …
1330#ifdef __APPLE__ 1644#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 1645 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1646 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1647 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 1648#endif
1649#ifdef __FreeBSD__
1650 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1651#endif
1335 1652
1336 return flags; 1653 return flags;
1337} 1654}
1338 1655
1339unsigned int 1656unsigned int
1340ev_embeddable_backends (void) 1657ev_embeddable_backends (void)
1341{ 1658{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1659 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 1660
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1661 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 1662 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 1663 flags &= ~EVBACKEND_EPOLL;
1347 1664
1348 return flags; 1665 return flags;
1349} 1666}
1350 1667
1351unsigned int 1668unsigned int
1352ev_backend (EV_P) 1669ev_backend (EV_P)
1353{ 1670{
1354 return backend; 1671 return backend;
1355} 1672}
1356 1673
1674#if EV_FEATURE_API
1357unsigned int 1675unsigned int
1358ev_loop_count (EV_P) 1676ev_iteration (EV_P)
1359{ 1677{
1360 return loop_count; 1678 return loop_count;
1361} 1679}
1362 1680
1681unsigned int
1682ev_depth (EV_P)
1683{
1684 return loop_depth;
1685}
1686
1363void 1687void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1688ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365{ 1689{
1366 io_blocktime = interval; 1690 io_blocktime = interval;
1367} 1691}
… …
1369void 1693void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1694ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371{ 1695{
1372 timeout_blocktime = interval; 1696 timeout_blocktime = interval;
1373} 1697}
1698
1699void
1700ev_set_userdata (EV_P_ void *data)
1701{
1702 userdata = data;
1703}
1704
1705void *
1706ev_userdata (EV_P)
1707{
1708 return userdata;
1709}
1710
1711void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1712{
1713 invoke_cb = invoke_pending_cb;
1714}
1715
1716void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1717{
1718 release_cb = release;
1719 acquire_cb = acquire;
1720}
1721#endif
1374 1722
1375/* initialise a loop structure, must be zero-initialised */ 1723/* initialise a loop structure, must be zero-initialised */
1376static void noinline 1724static void noinline
1377loop_init (EV_P_ unsigned int flags) 1725loop_init (EV_P_ unsigned int flags)
1378{ 1726{
1379 if (!backend) 1727 if (!backend)
1380 { 1728 {
1729 origflags = flags;
1730
1381#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
1382 if (!have_realtime) 1732 if (!have_realtime)
1383 { 1733 {
1384 struct timespec ts; 1734 struct timespec ts;
1385 1735
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1746 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 1747 have_monotonic = 1;
1398 } 1748 }
1399#endif 1749#endif
1400 1750
1751 /* pid check not overridable via env */
1752#ifndef _WIN32
1753 if (flags & EVFLAG_FORKCHECK)
1754 curpid = getpid ();
1755#endif
1756
1757 if (!(flags & EVFLAG_NOENV)
1758 && !enable_secure ()
1759 && getenv ("LIBEV_FLAGS"))
1760 flags = atoi (getenv ("LIBEV_FLAGS"));
1761
1401 ev_rt_now = ev_time (); 1762 ev_rt_now = ev_time ();
1402 mn_now = get_clock (); 1763 mn_now = get_clock ();
1403 now_floor = mn_now; 1764 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now; 1765 rtmn_diff = ev_rt_now - mn_now;
1766#if EV_FEATURE_API
1767 invoke_cb = ev_invoke_pending;
1768#endif
1405 1769
1406 io_blocktime = 0.; 1770 io_blocktime = 0.;
1407 timeout_blocktime = 0.; 1771 timeout_blocktime = 0.;
1408 backend = 0; 1772 backend = 0;
1409 backend_fd = -1; 1773 backend_fd = -1;
1410 gotasync = 0; 1774 sig_pending = 0;
1775#if EV_ASYNC_ENABLE
1776 async_pending = 0;
1777#endif
1411#if EV_USE_INOTIFY 1778#if EV_USE_INOTIFY
1412 fs_fd = -2; 1779 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1413#endif 1780#endif
1414 1781#if EV_USE_SIGNALFD
1415 /* pid check not overridable via env */ 1782 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1416#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid ();
1419#endif 1783#endif
1420 1784
1421 if (!(flags & EVFLAG_NOENV) 1785 if (!(flags & EVBACKEND_MASK))
1422 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS"));
1425
1426 if (!(flags & 0x0000ffffU))
1427 flags |= ev_recommended_backends (); 1786 flags |= ev_recommended_backends ();
1428 1787
1788#if EV_USE_IOCP
1789 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1790#endif
1429#if EV_USE_PORT 1791#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1792 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 1793#endif
1432#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1795 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1804 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 1805#endif
1444 1806
1445 ev_prepare_init (&pending_w, pendingcb); 1807 ev_prepare_init (&pending_w, pendingcb);
1446 1808
1809#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 1810 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 1811 ev_set_priority (&pipe_w, EV_MAXPRI);
1812#endif
1449 } 1813 }
1450} 1814}
1451 1815
1452/* free up a loop structure */ 1816/* free up a loop structure */
1453static void noinline 1817void
1454loop_destroy (EV_P) 1818ev_loop_destroy (EV_P)
1455{ 1819{
1456 int i; 1820 int i;
1457 1821
1822#if EV_MULTIPLICITY
1823 /* mimic free (0) */
1824 if (!EV_A)
1825 return;
1826#endif
1827
1828#if EV_CLEANUP_ENABLE
1829 /* queue cleanup watchers (and execute them) */
1830 if (expect_false (cleanupcnt))
1831 {
1832 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1833 EV_INVOKE_PENDING;
1834 }
1835#endif
1836
1837#if EV_CHILD_ENABLE
1838 if (ev_is_active (&childev))
1839 {
1840 ev_ref (EV_A); /* child watcher */
1841 ev_signal_stop (EV_A_ &childev);
1842 }
1843#endif
1844
1458 if (ev_is_active (&pipe_w)) 1845 if (ev_is_active (&pipe_w))
1459 { 1846 {
1460 ev_ref (EV_A); /* signal watcher */ 1847 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 1848 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 1849
1463#if EV_USE_EVENTFD 1850#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1851 if (evfd >= 0)
1465 close (evfd); 1852 close (evfd);
1466#endif 1853#endif
1467 1854
1468 if (evpipe [0] >= 0) 1855 if (evpipe [0] >= 0)
1469 { 1856 {
1470 close (evpipe [0]); 1857 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 1858 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 1859 }
1473 } 1860 }
1861
1862#if EV_USE_SIGNALFD
1863 if (ev_is_active (&sigfd_w))
1864 close (sigfd);
1865#endif
1474 1866
1475#if EV_USE_INOTIFY 1867#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 1868 if (fs_fd >= 0)
1477 close (fs_fd); 1869 close (fs_fd);
1478#endif 1870#endif
1479 1871
1480 if (backend_fd >= 0) 1872 if (backend_fd >= 0)
1481 close (backend_fd); 1873 close (backend_fd);
1482 1874
1875#if EV_USE_IOCP
1876 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1877#endif
1483#if EV_USE_PORT 1878#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1879 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 1880#endif
1486#if EV_USE_KQUEUE 1881#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1882 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 1897#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 1898 array_free (idle, [i]);
1504#endif 1899#endif
1505 } 1900 }
1506 1901
1507 ev_free (anfds); anfdmax = 0; 1902 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 1903
1509 /* have to use the microsoft-never-gets-it-right macro */ 1904 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 1905 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 1906 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 1907 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 1909 array_free (periodic, EMPTY);
1515#endif 1910#endif
1516#if EV_FORK_ENABLE 1911#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 1912 array_free (fork, EMPTY);
1518#endif 1913#endif
1914#if EV_CLEANUP_ENABLE
1915 array_free (cleanup, EMPTY);
1916#endif
1519 array_free (prepare, EMPTY); 1917 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 1918 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 1919#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 1920 array_free (async, EMPTY);
1523#endif 1921#endif
1524 1922
1525 backend = 0; 1923 backend = 0;
1924
1925#if EV_MULTIPLICITY
1926 if (ev_is_default_loop (EV_A))
1927#endif
1928 ev_default_loop_ptr = 0;
1929#if EV_MULTIPLICITY
1930 else
1931 ev_free (EV_A);
1932#endif
1526} 1933}
1527 1934
1528#if EV_USE_INOTIFY 1935#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 1936inline_size void infy_fork (EV_P);
1530#endif 1937#endif
… …
1547 1954
1548 if (ev_is_active (&pipe_w)) 1955 if (ev_is_active (&pipe_w))
1549 { 1956 {
1550 /* this "locks" the handlers against writing to the pipe */ 1957 /* this "locks" the handlers against writing to the pipe */
1551 /* while we modify the fd vars */ 1958 /* while we modify the fd vars */
1552 gotsig = 1; 1959 sig_pending = 1;
1553#if EV_ASYNC_ENABLE 1960#if EV_ASYNC_ENABLE
1554 gotasync = 1; 1961 async_pending = 1;
1555#endif 1962#endif
1556 1963
1557 ev_ref (EV_A); 1964 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 1965 ev_io_stop (EV_A_ &pipe_w);
1559 1966
… …
1562 close (evfd); 1969 close (evfd);
1563#endif 1970#endif
1564 1971
1565 if (evpipe [0] >= 0) 1972 if (evpipe [0] >= 0)
1566 { 1973 {
1567 close (evpipe [0]); 1974 EV_WIN32_CLOSE_FD (evpipe [0]);
1568 close (evpipe [1]); 1975 EV_WIN32_CLOSE_FD (evpipe [1]);
1569 } 1976 }
1570 1977
1978#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1571 evpipe_init (EV_A); 1979 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 1980 /* now iterate over everything, in case we missed something */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 1981 pipecb (EV_A_ &pipe_w, EV_READ);
1982#endif
1574 } 1983 }
1575 1984
1576 postfork = 0; 1985 postfork = 0;
1577} 1986}
1578 1987
1579#if EV_MULTIPLICITY 1988#if EV_MULTIPLICITY
1580 1989
1581struct ev_loop * 1990struct ev_loop *
1582ev_loop_new (unsigned int flags) 1991ev_loop_new (unsigned int flags)
1583{ 1992{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1993 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 1994
1586 memset (loop, 0, sizeof (struct ev_loop)); 1995 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 1996 loop_init (EV_A_ flags);
1589 1997
1590 if (ev_backend (EV_A)) 1998 if (ev_backend (EV_A))
1591 return loop; 1999 return EV_A;
1592 2000
2001 ev_free (EV_A);
1593 return 0; 2002 return 0;
1594} 2003}
1595 2004
1596void 2005#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2006
1609#if EV_VERIFY 2007#if EV_VERIFY
1610static void noinline 2008static void noinline
1611verify_watcher (EV_P_ W w) 2009verify_watcher (EV_P_ W w)
1612{ 2010{
… …
1640 verify_watcher (EV_A_ ws [cnt]); 2038 verify_watcher (EV_A_ ws [cnt]);
1641 } 2039 }
1642} 2040}
1643#endif 2041#endif
1644 2042
2043#if EV_FEATURE_API
1645void 2044void
1646ev_loop_verify (EV_P) 2045ev_verify (EV_P)
1647{ 2046{
1648#if EV_VERIFY 2047#if EV_VERIFY
1649 int i; 2048 int i;
1650 WL w; 2049 WL w;
1651 2050
… …
1685#if EV_FORK_ENABLE 2084#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2085 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2086 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2087#endif
1689 2088
2089#if EV_CLEANUP_ENABLE
2090 assert (cleanupmax >= cleanupcnt);
2091 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2092#endif
2093
1690#if EV_ASYNC_ENABLE 2094#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2095 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2096 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2097#endif
1694 2098
2099#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2100 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2101 array_verify (EV_A_ (W *)prepares, preparecnt);
2102#endif
1697 2103
2104#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2105 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2106 array_verify (EV_A_ (W *)checks, checkcnt);
2107#endif
1700 2108
1701# if 0 2109# if 0
2110#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2111 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2112 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2113#endif
1704# endif 2114# endif
1705#endif 2115#endif
1706} 2116}
1707 2117#endif
1708#endif /* multiplicity */
1709 2118
1710#if EV_MULTIPLICITY 2119#if EV_MULTIPLICITY
1711struct ev_loop * 2120struct ev_loop *
1712ev_default_loop_init (unsigned int flags)
1713#else 2121#else
1714int 2122int
2123#endif
1715ev_default_loop (unsigned int flags) 2124ev_default_loop (unsigned int flags)
1716#endif
1717{ 2125{
1718 if (!ev_default_loop_ptr) 2126 if (!ev_default_loop_ptr)
1719 { 2127 {
1720#if EV_MULTIPLICITY 2128#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2129 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2130#else
1723 ev_default_loop_ptr = 1; 2131 ev_default_loop_ptr = 1;
1724#endif 2132#endif
1725 2133
1726 loop_init (EV_A_ flags); 2134 loop_init (EV_A_ flags);
1727 2135
1728 if (ev_backend (EV_A)) 2136 if (ev_backend (EV_A))
1729 { 2137 {
1730#ifndef _WIN32 2138#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2139 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2140 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2141 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2142 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2143#endif
… …
1740 2148
1741 return ev_default_loop_ptr; 2149 return ev_default_loop_ptr;
1742} 2150}
1743 2151
1744void 2152void
1745ev_default_destroy (void) 2153ev_loop_fork (EV_P)
1746{ 2154{
1747#if EV_MULTIPLICITY
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */ 2155 postfork = 1; /* must be in line with ev_default_fork */
1769} 2156}
1770 2157
1771/*****************************************************************************/ 2158/*****************************************************************************/
1772 2159
1773void 2160void
1774ev_invoke (EV_P_ void *w, int revents) 2161ev_invoke (EV_P_ void *w, int revents)
1775{ 2162{
1776 EV_CB_INVOKE ((W)w, revents); 2163 EV_CB_INVOKE ((W)w, revents);
1777} 2164}
1778 2165
1779inline_speed void 2166unsigned int
1780call_pending (EV_P) 2167ev_pending_count (EV_P)
2168{
2169 int pri;
2170 unsigned int count = 0;
2171
2172 for (pri = NUMPRI; pri--; )
2173 count += pendingcnt [pri];
2174
2175 return count;
2176}
2177
2178void noinline
2179ev_invoke_pending (EV_P)
1781{ 2180{
1782 int pri; 2181 int pri;
1783 2182
1784 for (pri = NUMPRI; pri--; ) 2183 for (pri = NUMPRI; pri--; )
1785 while (pendingcnt [pri]) 2184 while (pendingcnt [pri])
1786 { 2185 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2186 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1788
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791 2187
1792 p->w->pending = 0; 2188 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 2189 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 2190 EV_FREQUENT_CHECK;
1795 } 2191 }
… …
1852 EV_FREQUENT_CHECK; 2248 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 2249 feed_reverse (EV_A_ (W)w);
1854 } 2250 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2251 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 2252
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 2253 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 2254 }
1859} 2255}
1860 2256
1861#if EV_PERIODIC_ENABLE 2257#if EV_PERIODIC_ENABLE
2258
2259static void noinline
2260periodic_recalc (EV_P_ ev_periodic *w)
2261{
2262 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2263 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2264
2265 /* the above almost always errs on the low side */
2266 while (at <= ev_rt_now)
2267 {
2268 ev_tstamp nat = at + w->interval;
2269
2270 /* when resolution fails us, we use ev_rt_now */
2271 if (expect_false (nat == at))
2272 {
2273 at = ev_rt_now;
2274 break;
2275 }
2276
2277 at = nat;
2278 }
2279
2280 ev_at (w) = at;
2281}
2282
1862/* make periodics pending */ 2283/* make periodics pending */
1863inline_size void 2284inline_size void
1864periodics_reify (EV_P) 2285periodics_reify (EV_P)
1865{ 2286{
1866 EV_FREQUENT_CHECK; 2287 EV_FREQUENT_CHECK;
… …
1885 ANHE_at_cache (periodics [HEAP0]); 2306 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 2307 downheap (periodics, periodiccnt, HEAP0);
1887 } 2308 }
1888 else if (w->interval) 2309 else if (w->interval)
1889 { 2310 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2311 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 2312 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 2313 downheap (periodics, periodiccnt, HEAP0);
1906 } 2314 }
1907 else 2315 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2316 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 2323 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 2324 }
1917} 2325}
1918 2326
1919/* simply recalculate all periodics */ 2327/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2328/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 2329static void noinline
1922periodics_reschedule (EV_P) 2330periodics_reschedule (EV_P)
1923{ 2331{
1924 int i; 2332 int i;
1925 2333
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2337 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 2338
1931 if (w->reschedule_cb) 2339 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2340 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2341 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2342 periodic_recalc (EV_A_ w);
1935 2343
1936 ANHE_at_cache (periodics [i]); 2344 ANHE_at_cache (periodics [i]);
1937 } 2345 }
1938 2346
1939 reheap (periodics, periodiccnt); 2347 reheap (periodics, periodiccnt);
… …
1953 ANHE_at_cache (*he); 2361 ANHE_at_cache (*he);
1954 } 2362 }
1955} 2363}
1956 2364
1957/* fetch new monotonic and realtime times from the kernel */ 2365/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 2366/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 2367inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 2368time_update (EV_P_ ev_tstamp max_block)
1961{ 2369{
1962#if EV_USE_MONOTONIC 2370#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 2371 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 2394 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 2395 * in the unlikely event of having been preempted here.
1988 */ 2396 */
1989 for (i = 4; --i; ) 2397 for (i = 4; --i; )
1990 { 2398 {
2399 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 2400 rtmn_diff = ev_rt_now - mn_now;
1992 2401
2402 diff = odiff - rtmn_diff;
2403
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2404 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 2405 return; /* all is well */
1995 2406
1996 ev_rt_now = ev_time (); 2407 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 2408 mn_now = get_clock ();
1998 now_floor = mn_now; 2409 now_floor = mn_now;
… …
2020 2431
2021 mn_now = ev_rt_now; 2432 mn_now = ev_rt_now;
2022 } 2433 }
2023} 2434}
2024 2435
2025static int loop_done;
2026
2027void 2436void
2028ev_loop (EV_P_ int flags) 2437ev_run (EV_P_ int flags)
2029{ 2438{
2439#if EV_FEATURE_API
2440 ++loop_depth;
2441#endif
2442
2443 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2444
2030 loop_done = EVUNLOOP_CANCEL; 2445 loop_done = EVBREAK_CANCEL;
2031 2446
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2447 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 2448
2034 do 2449 do
2035 { 2450 {
2036#if EV_VERIFY >= 2 2451#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 2452 ev_verify (EV_A);
2038#endif 2453#endif
2039 2454
2040#ifndef _WIN32 2455#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 2456 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 2457 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 2465 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 2466 if (expect_false (postfork))
2052 if (forkcnt) 2467 if (forkcnt)
2053 { 2468 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2469 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 2470 EV_INVOKE_PENDING;
2056 } 2471 }
2057#endif 2472#endif
2058 2473
2474#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 2475 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 2476 if (expect_false (preparecnt))
2061 { 2477 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2478 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 2479 EV_INVOKE_PENDING;
2064 } 2480 }
2481#endif
2482
2483 if (expect_false (loop_done))
2484 break;
2065 2485
2066 /* we might have forked, so reify kernel state if necessary */ 2486 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 2487 if (expect_false (postfork))
2068 loop_fork (EV_A); 2488 loop_fork (EV_A);
2069 2489
… …
2073 /* calculate blocking time */ 2493 /* calculate blocking time */
2074 { 2494 {
2075 ev_tstamp waittime = 0.; 2495 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 2496 ev_tstamp sleeptime = 0.;
2077 2497
2498 /* remember old timestamp for io_blocktime calculation */
2499 ev_tstamp prev_mn_now = mn_now;
2500
2501 /* update time to cancel out callback processing overhead */
2502 time_update (EV_A_ 1e100);
2503
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2504 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2079 { 2505 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 2506 waittime = MAX_BLOCKTIME;
2087 2507
2088 if (timercnt) 2508 if (timercnt)
2089 { 2509 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2510 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 2511 if (waittime > to) waittime = to;
2092 } 2512 }
2093 2513
2094#if EV_PERIODIC_ENABLE 2514#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 2515 if (periodiccnt)
2096 { 2516 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2517 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 2518 if (waittime > to) waittime = to;
2099 } 2519 }
2100#endif 2520#endif
2101 2521
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2522 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 2523 if (expect_false (waittime < timeout_blocktime))
2104 waittime = timeout_blocktime; 2524 waittime = timeout_blocktime;
2525
2526 /* at this point, we NEED to wait, so we have to ensure */
2527 /* to pass a minimum nonzero value to the backend */
2528 if (expect_false (waittime < backend_mintime))
2529 waittime = backend_mintime;
2105 2530
2106 /* extra check because io_blocktime is commonly 0 */ 2531 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 2532 if (expect_false (io_blocktime))
2108 { 2533 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2534 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 2535
2111 if (sleeptime > waittime - backend_fudge) 2536 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 2537 sleeptime = waittime - backend_mintime;
2113 2538
2114 if (expect_true (sleeptime > 0.)) 2539 if (expect_true (sleeptime > 0.))
2115 { 2540 {
2116 ev_sleep (sleeptime); 2541 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 2542 waittime -= sleeptime;
2118 } 2543 }
2119 } 2544 }
2120 } 2545 }
2121 2546
2547#if EV_FEATURE_API
2122 ++loop_count; 2548 ++loop_count;
2549#endif
2550 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 2551 backend_poll (EV_A_ waittime);
2552 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2124 2553
2125 /* update ev_rt_now, do magic */ 2554 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 2555 time_update (EV_A_ waittime + sleeptime);
2127 } 2556 }
2128 2557
… …
2135#if EV_IDLE_ENABLE 2564#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 2565 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 2566 idle_reify (EV_A);
2138#endif 2567#endif
2139 2568
2569#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 2570 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 2571 if (expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2572 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2573#endif
2143 2574
2144 call_pending (EV_A); 2575 EV_INVOKE_PENDING;
2145 } 2576 }
2146 while (expect_true ( 2577 while (expect_true (
2147 activecnt 2578 activecnt
2148 && !loop_done 2579 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2580 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 2581 ));
2151 2582
2152 if (loop_done == EVUNLOOP_ONE) 2583 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 2584 loop_done = EVBREAK_CANCEL;
2154}
2155 2585
2586#if EV_FEATURE_API
2587 --loop_depth;
2588#endif
2589}
2590
2156void 2591void
2157ev_unloop (EV_P_ int how) 2592ev_break (EV_P_ int how)
2158{ 2593{
2159 loop_done = how; 2594 loop_done = how;
2160} 2595}
2161 2596
2162void 2597void
… …
2209inline_size void 2644inline_size void
2210wlist_del (WL *head, WL elem) 2645wlist_del (WL *head, WL elem)
2211{ 2646{
2212 while (*head) 2647 while (*head)
2213 { 2648 {
2214 if (*head == elem) 2649 if (expect_true (*head == elem))
2215 { 2650 {
2216 *head = elem->next; 2651 *head = elem->next;
2217 return; 2652 break;
2218 } 2653 }
2219 2654
2220 head = &(*head)->next; 2655 head = &(*head)->next;
2221 } 2656 }
2222} 2657}
… …
2250} 2685}
2251 2686
2252inline_size void 2687inline_size void
2253pri_adjust (EV_P_ W w) 2688pri_adjust (EV_P_ W w)
2254{ 2689{
2255 int pri = w->priority; 2690 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2691 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2692 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 2693 ev_set_priority (w, pri);
2259} 2694}
2260 2695
2261inline_speed void 2696inline_speed void
2262ev_start (EV_P_ W w, int active) 2697ev_start (EV_P_ W w, int active)
2263{ 2698{
… …
2282 2717
2283 if (expect_false (ev_is_active (w))) 2718 if (expect_false (ev_is_active (w)))
2284 return; 2719 return;
2285 2720
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2721 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2722 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2288 2723
2289 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
2290 2725
2291 ev_start (EV_A_ (W)w, 1); 2726 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2727 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293 wlist_add (&anfds[fd].head, (WL)w); 2728 wlist_add (&anfds[fd].head, (WL)w);
2294 2729
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2730 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 2731 w->events &= ~EV__IOFDSET;
2297 2732
2298 EV_FREQUENT_CHECK; 2733 EV_FREQUENT_CHECK;
2299} 2734}
2300 2735
… …
2310 EV_FREQUENT_CHECK; 2745 EV_FREQUENT_CHECK;
2311 2746
2312 wlist_del (&anfds[w->fd].head, (WL)w); 2747 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2314 2749
2315 fd_change (EV_A_ w->fd, 1); 2750 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 2751
2317 EV_FREQUENT_CHECK; 2752 EV_FREQUENT_CHECK;
2318} 2753}
2319 2754
2320void noinline 2755void noinline
… …
2362 timers [active] = timers [timercnt + HEAP0]; 2797 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 2798 adjustheap (timers, timercnt, active);
2364 } 2799 }
2365 } 2800 }
2366 2801
2367 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now; 2802 ev_at (w) -= mn_now;
2370 2803
2371 ev_stop (EV_A_ (W)w); 2804 ev_stop (EV_A_ (W)w);
2805
2806 EV_FREQUENT_CHECK;
2372} 2807}
2373 2808
2374void noinline 2809void noinline
2375ev_timer_again (EV_P_ ev_timer *w) 2810ev_timer_again (EV_P_ ev_timer *w)
2376{ 2811{
… …
2394 } 2829 }
2395 2830
2396 EV_FREQUENT_CHECK; 2831 EV_FREQUENT_CHECK;
2397} 2832}
2398 2833
2834ev_tstamp
2835ev_timer_remaining (EV_P_ ev_timer *w)
2836{
2837 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2838}
2839
2399#if EV_PERIODIC_ENABLE 2840#if EV_PERIODIC_ENABLE
2400void noinline 2841void noinline
2401ev_periodic_start (EV_P_ ev_periodic *w) 2842ev_periodic_start (EV_P_ ev_periodic *w)
2402{ 2843{
2403 if (expect_false (ev_is_active (w))) 2844 if (expect_false (ev_is_active (w)))
… …
2406 if (w->reschedule_cb) 2847 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2848 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 2849 else if (w->interval)
2409 { 2850 {
2410 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2851 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 2852 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 2853 }
2414 else 2854 else
2415 ev_at (w) = w->offset; 2855 ev_at (w) = w->offset;
2416 2856
2417 EV_FREQUENT_CHECK; 2857 EV_FREQUENT_CHECK;
… …
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 2889 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 2890 adjustheap (periodics, periodiccnt, active);
2451 } 2891 }
2452 } 2892 }
2453 2893
2454 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w); 2894 ev_stop (EV_A_ (W)w);
2895
2896 EV_FREQUENT_CHECK;
2457} 2897}
2458 2898
2459void noinline 2899void noinline
2460ev_periodic_again (EV_P_ ev_periodic *w) 2900ev_periodic_again (EV_P_ ev_periodic *w)
2461{ 2901{
… …
2467 2907
2468#ifndef SA_RESTART 2908#ifndef SA_RESTART
2469# define SA_RESTART 0 2909# define SA_RESTART 0
2470#endif 2910#endif
2471 2911
2912#if EV_SIGNAL_ENABLE
2913
2472void noinline 2914void noinline
2473ev_signal_start (EV_P_ ev_signal *w) 2915ev_signal_start (EV_P_ ev_signal *w)
2474{ 2916{
2475#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477#endif
2478 if (expect_false (ev_is_active (w))) 2917 if (expect_false (ev_is_active (w)))
2479 return; 2918 return;
2480 2919
2481 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2920 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2482 2921
2483 evpipe_init (EV_A); 2922#if EV_MULTIPLICITY
2923 assert (("libev: a signal must not be attached to two different loops",
2924 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2484 2925
2485 EV_FREQUENT_CHECK; 2926 signals [w->signum - 1].loop = EV_A;
2927#endif
2486 2928
2929 EV_FREQUENT_CHECK;
2930
2931#if EV_USE_SIGNALFD
2932 if (sigfd == -2)
2487 { 2933 {
2488#ifndef _WIN32 2934 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 2935 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 2936 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 2937
2494 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2938 if (sigfd >= 0)
2939 {
2940 fd_intern (sigfd); /* doing it twice will not hurt */
2495 2941
2496#ifndef _WIN32 2942 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 2943
2498#endif 2944 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2945 ev_set_priority (&sigfd_w, EV_MAXPRI);
2946 ev_io_start (EV_A_ &sigfd_w);
2947 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2948 }
2499 } 2949 }
2950
2951 if (sigfd >= 0)
2952 {
2953 /* TODO: check .head */
2954 sigaddset (&sigfd_set, w->signum);
2955 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2956
2957 signalfd (sigfd, &sigfd_set, 0);
2958 }
2959#endif
2500 2960
2501 ev_start (EV_A_ (W)w, 1); 2961 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 2962 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 2963
2504 if (!((WL)w)->next) 2964 if (!((WL)w)->next)
2965# if EV_USE_SIGNALFD
2966 if (sigfd < 0) /*TODO*/
2967# endif
2505 { 2968 {
2506#if _WIN32 2969# ifdef _WIN32
2970 evpipe_init (EV_A);
2971
2507 signal (w->signum, ev_sighandler); 2972 signal (w->signum, ev_sighandler);
2508#else 2973# else
2509 struct sigaction sa; 2974 struct sigaction sa;
2975
2976 evpipe_init (EV_A);
2977
2510 sa.sa_handler = ev_sighandler; 2978 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 2979 sigfillset (&sa.sa_mask);
2512 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2980 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2513 sigaction (w->signum, &sa, 0); 2981 sigaction (w->signum, &sa, 0);
2982
2983 if (origflags & EVFLAG_NOSIGMASK)
2984 {
2985 sigemptyset (&sa.sa_mask);
2986 sigaddset (&sa.sa_mask, w->signum);
2987 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2988 }
2514#endif 2989#endif
2515 } 2990 }
2516 2991
2517 EV_FREQUENT_CHECK; 2992 EV_FREQUENT_CHECK;
2518} 2993}
2519 2994
2520void noinline 2995void noinline
… …
2528 3003
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 3004 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 3005 ev_stop (EV_A_ (W)w);
2531 3006
2532 if (!signals [w->signum - 1].head) 3007 if (!signals [w->signum - 1].head)
3008 {
3009#if EV_MULTIPLICITY
3010 signals [w->signum - 1].loop = 0; /* unattach from signal */
3011#endif
3012#if EV_USE_SIGNALFD
3013 if (sigfd >= 0)
3014 {
3015 sigset_t ss;
3016
3017 sigemptyset (&ss);
3018 sigaddset (&ss, w->signum);
3019 sigdelset (&sigfd_set, w->signum);
3020
3021 signalfd (sigfd, &sigfd_set, 0);
3022 sigprocmask (SIG_UNBLOCK, &ss, 0);
3023 }
3024 else
3025#endif
2533 signal (w->signum, SIG_DFL); 3026 signal (w->signum, SIG_DFL);
3027 }
2534 3028
2535 EV_FREQUENT_CHECK; 3029 EV_FREQUENT_CHECK;
2536} 3030}
3031
3032#endif
3033
3034#if EV_CHILD_ENABLE
2537 3035
2538void 3036void
2539ev_child_start (EV_P_ ev_child *w) 3037ev_child_start (EV_P_ ev_child *w)
2540{ 3038{
2541#if EV_MULTIPLICITY 3039#if EV_MULTIPLICITY
… …
2545 return; 3043 return;
2546 3044
2547 EV_FREQUENT_CHECK; 3045 EV_FREQUENT_CHECK;
2548 3046
2549 ev_start (EV_A_ (W)w, 1); 3047 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3048 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 3049
2552 EV_FREQUENT_CHECK; 3050 EV_FREQUENT_CHECK;
2553} 3051}
2554 3052
2555void 3053void
… …
2559 if (expect_false (!ev_is_active (w))) 3057 if (expect_false (!ev_is_active (w)))
2560 return; 3058 return;
2561 3059
2562 EV_FREQUENT_CHECK; 3060 EV_FREQUENT_CHECK;
2563 3061
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3062 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 3063 ev_stop (EV_A_ (W)w);
2566 3064
2567 EV_FREQUENT_CHECK; 3065 EV_FREQUENT_CHECK;
2568} 3066}
3067
3068#endif
2569 3069
2570#if EV_STAT_ENABLE 3070#if EV_STAT_ENABLE
2571 3071
2572# ifdef _WIN32 3072# ifdef _WIN32
2573# undef lstat 3073# undef lstat
… …
2579#define MIN_STAT_INTERVAL 0.1074891 3079#define MIN_STAT_INTERVAL 0.1074891
2580 3080
2581static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3081static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2582 3082
2583#if EV_USE_INOTIFY 3083#if EV_USE_INOTIFY
2584# define EV_INOTIFY_BUFSIZE 8192 3084
3085/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3086# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2585 3087
2586static void noinline 3088static void noinline
2587infy_add (EV_P_ ev_stat *w) 3089infy_add (EV_P_ ev_stat *w)
2588{ 3090{
2589 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3091 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2590 3092
2591 if (w->wd < 0) 3093 if (w->wd >= 0)
3094 {
3095 struct statfs sfs;
3096
3097 /* now local changes will be tracked by inotify, but remote changes won't */
3098 /* unless the filesystem is known to be local, we therefore still poll */
3099 /* also do poll on <2.6.25, but with normal frequency */
3100
3101 if (!fs_2625)
3102 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3103 else if (!statfs (w->path, &sfs)
3104 && (sfs.f_type == 0x1373 /* devfs */
3105 || sfs.f_type == 0xEF53 /* ext2/3 */
3106 || sfs.f_type == 0x3153464a /* jfs */
3107 || sfs.f_type == 0x52654973 /* reiser3 */
3108 || sfs.f_type == 0x01021994 /* tempfs */
3109 || sfs.f_type == 0x58465342 /* xfs */))
3110 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3111 else
3112 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2592 { 3113 }
3114 else
3115 {
3116 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3117 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 3118
2596 /* monitor some parent directory for speedup hints */ 3119 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3120 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2598 /* but an efficiency issue only */ 3121 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3122 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 3123 {
2601 char path [4096]; 3124 char path [4096];
… …
2611 if (!pend || pend == path) 3134 if (!pend || pend == path)
2612 break; 3135 break;
2613 3136
2614 *pend = 0; 3137 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 3138 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 3139 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3140 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 3141 }
2619 } 3142 }
2620 3143
2621 if (w->wd >= 0) 3144 if (w->wd >= 0)
2622 {
2623 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3145 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 3146
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 3147 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 3148 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 3149 ev_timer_again (EV_A_ &w->timer);
2641 } 3150 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 3151}
2643 3152
2644static void noinline 3153static void noinline
2645infy_del (EV_P_ ev_stat *w) 3154infy_del (EV_P_ ev_stat *w)
2646{ 3155{
… …
2649 3158
2650 if (wd < 0) 3159 if (wd < 0)
2651 return; 3160 return;
2652 3161
2653 w->wd = -2; 3162 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3163 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 3164 wlist_del (&fs_hash [slot].head, (WL)w);
2656 3165
2657 /* remove this watcher, if others are watching it, they will rearm */ 3166 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 3167 inotify_rm_watch (fs_fd, wd);
2659} 3168}
… …
2661static void noinline 3170static void noinline
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3171infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 3172{
2664 if (slot < 0) 3173 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 3174 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3175 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 3176 infy_wd (EV_A_ slot, wd, ev);
2668 else 3177 else
2669 { 3178 {
2670 WL w_; 3179 WL w_;
2671 3180
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3181 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 3182 {
2674 ev_stat *w = (ev_stat *)w_; 3183 ev_stat *w = (ev_stat *)w_;
2675 w_ = w_->next; /* lets us remove this watcher and all before it */ 3184 w_ = w_->next; /* lets us remove this watcher and all before it */
2676 3185
2677 if (w->wd == wd || wd == -1) 3186 if (w->wd == wd || wd == -1)
2678 { 3187 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3188 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 3189 {
2681 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3190 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 w->wd = -1; 3191 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 3192 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 3193 }
2685 3194
2686 stat_timer_cb (EV_A_ &w->timer, 0); 3195 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 3200
2692static void 3201static void
2693infy_cb (EV_P_ ev_io *w, int revents) 3202infy_cb (EV_P_ ev_io *w, int revents)
2694{ 3203{
2695 char buf [EV_INOTIFY_BUFSIZE]; 3204 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 3205 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 3206 int len = read (fs_fd, buf, sizeof (buf));
2699 3207
2700 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3208 for (ofs = 0; ofs < len; )
3209 {
3210 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3211 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3212 ofs += sizeof (struct inotify_event) + ev->len;
3213 }
2702} 3214}
2703 3215
2704inline_size void 3216inline_size void
2705check_2625 (EV_P) 3217ev_check_2625 (EV_P)
2706{ 3218{
2707 /* kernels < 2.6.25 are borked 3219 /* kernels < 2.6.25 are borked
2708 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3220 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2709 */ 3221 */
2710 struct utsname buf; 3222 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 3223 return;
2715 3224
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 fs_2625 = 1; 3225 fs_2625 = 1;
3226}
3227
3228inline_size int
3229infy_newfd (void)
3230{
3231#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3232 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3233 if (fd >= 0)
3234 return fd;
3235#endif
3236 return inotify_init ();
2725} 3237}
2726 3238
2727inline_size void 3239inline_size void
2728infy_init (EV_P) 3240infy_init (EV_P)
2729{ 3241{
2730 if (fs_fd != -2) 3242 if (fs_fd != -2)
2731 return; 3243 return;
2732 3244
2733 fs_fd = -1; 3245 fs_fd = -1;
2734 3246
2735 check_2625 (EV_A); 3247 ev_check_2625 (EV_A);
2736 3248
2737 fs_fd = inotify_init (); 3249 fs_fd = infy_newfd ();
2738 3250
2739 if (fs_fd >= 0) 3251 if (fs_fd >= 0)
2740 { 3252 {
3253 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3254 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 3255 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 3256 ev_io_start (EV_A_ &fs_w);
3257 ev_unref (EV_A);
2744 } 3258 }
2745} 3259}
2746 3260
2747inline_size void 3261inline_size void
2748infy_fork (EV_P) 3262infy_fork (EV_P)
… …
2750 int slot; 3264 int slot;
2751 3265
2752 if (fs_fd < 0) 3266 if (fs_fd < 0)
2753 return; 3267 return;
2754 3268
3269 ev_ref (EV_A);
3270 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 3271 close (fs_fd);
2756 fs_fd = inotify_init (); 3272 fs_fd = infy_newfd ();
2757 3273
3274 if (fs_fd >= 0)
3275 {
3276 fd_intern (fs_fd);
3277 ev_io_set (&fs_w, fs_fd, EV_READ);
3278 ev_io_start (EV_A_ &fs_w);
3279 ev_unref (EV_A);
3280 }
3281
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3282 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 3283 {
2760 WL w_ = fs_hash [slot].head; 3284 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 3285 fs_hash [slot].head = 0;
2762 3286
2763 while (w_) 3287 while (w_)
… …
2768 w->wd = -1; 3292 w->wd = -1;
2769 3293
2770 if (fs_fd >= 0) 3294 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 3295 infy_add (EV_A_ w); /* re-add, no matter what */
2772 else 3296 else
3297 {
3298 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3299 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2773 ev_timer_again (EV_A_ &w->timer); 3300 ev_timer_again (EV_A_ &w->timer);
3301 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3302 }
2774 } 3303 }
2775 } 3304 }
2776} 3305}
2777 3306
2778#endif 3307#endif
… …
2795static void noinline 3324static void noinline
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3325stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 3326{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3327 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 3328
2800 /* we copy this here each the time so that */ 3329 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 3330 ev_stat_stat (EV_A_ w);
2804 3331
2805 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3332 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2806 if ( 3333 if (
2807 w->prev.st_dev != w->attr.st_dev 3334 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 3335 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 3336 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 3337 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 3338 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 3339 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 3340 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 3341 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 3342 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 3343 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 3344 || prev.st_ctime != w->attr.st_ctime
2818 ) { 3345 ) {
3346 /* we only update w->prev on actual differences */
3347 /* in case we test more often than invoke the callback, */
3348 /* to ensure that prev is always different to attr */
3349 w->prev = prev;
3350
2819 #if EV_USE_INOTIFY 3351 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 3352 if (fs_fd >= 0)
2821 { 3353 {
2822 infy_del (EV_A_ w); 3354 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 3355 infy_add (EV_A_ w);
… …
2848 3380
2849 if (fs_fd >= 0) 3381 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 3382 infy_add (EV_A_ w);
2851 else 3383 else
2852#endif 3384#endif
3385 {
2853 ev_timer_again (EV_A_ &w->timer); 3386 ev_timer_again (EV_A_ &w->timer);
3387 ev_unref (EV_A);
3388 }
2854 3389
2855 ev_start (EV_A_ (W)w, 1); 3390 ev_start (EV_A_ (W)w, 1);
2856 3391
2857 EV_FREQUENT_CHECK; 3392 EV_FREQUENT_CHECK;
2858} 3393}
… …
2867 EV_FREQUENT_CHECK; 3402 EV_FREQUENT_CHECK;
2868 3403
2869#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 3405 infy_del (EV_A_ w);
2871#endif 3406#endif
3407
3408 if (ev_is_active (&w->timer))
3409 {
3410 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 3411 ev_timer_stop (EV_A_ &w->timer);
3412 }
2873 3413
2874 ev_stop (EV_A_ (W)w); 3414 ev_stop (EV_A_ (W)w);
2875 3415
2876 EV_FREQUENT_CHECK; 3416 EV_FREQUENT_CHECK;
2877} 3417}
… …
2922 3462
2923 EV_FREQUENT_CHECK; 3463 EV_FREQUENT_CHECK;
2924} 3464}
2925#endif 3465#endif
2926 3466
3467#if EV_PREPARE_ENABLE
2927void 3468void
2928ev_prepare_start (EV_P_ ev_prepare *w) 3469ev_prepare_start (EV_P_ ev_prepare *w)
2929{ 3470{
2930 if (expect_false (ev_is_active (w))) 3471 if (expect_false (ev_is_active (w)))
2931 return; 3472 return;
… …
2957 3498
2958 ev_stop (EV_A_ (W)w); 3499 ev_stop (EV_A_ (W)w);
2959 3500
2960 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2961} 3502}
3503#endif
2962 3504
3505#if EV_CHECK_ENABLE
2963void 3506void
2964ev_check_start (EV_P_ ev_check *w) 3507ev_check_start (EV_P_ ev_check *w)
2965{ 3508{
2966 if (expect_false (ev_is_active (w))) 3509 if (expect_false (ev_is_active (w)))
2967 return; 3510 return;
… …
2993 3536
2994 ev_stop (EV_A_ (W)w); 3537 ev_stop (EV_A_ (W)w);
2995 3538
2996 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2997} 3540}
3541#endif
2998 3542
2999#if EV_EMBED_ENABLE 3543#if EV_EMBED_ENABLE
3000void noinline 3544void noinline
3001ev_embed_sweep (EV_P_ ev_embed *w) 3545ev_embed_sweep (EV_P_ ev_embed *w)
3002{ 3546{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 3547 ev_run (w->other, EVRUN_NOWAIT);
3004} 3548}
3005 3549
3006static void 3550static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 3551embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 3552{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3553 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 3554
3011 if (ev_cb (w)) 3555 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3556 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 3557 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 3558 ev_run (w->other, EVRUN_NOWAIT);
3015} 3559}
3016 3560
3017static void 3561static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3562embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 3563{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3564 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 3565
3022 { 3566 {
3023 struct ev_loop *loop = w->other; 3567 EV_P = w->other;
3024 3568
3025 while (fdchangecnt) 3569 while (fdchangecnt)
3026 { 3570 {
3027 fd_reify (EV_A); 3571 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3572 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 3573 }
3030 } 3574 }
3031} 3575}
3032 3576
3033static void 3577static void
… …
3036 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3580 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3037 3581
3038 ev_embed_stop (EV_A_ w); 3582 ev_embed_stop (EV_A_ w);
3039 3583
3040 { 3584 {
3041 struct ev_loop *loop = w->other; 3585 EV_P = w->other;
3042 3586
3043 ev_loop_fork (EV_A); 3587 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3588 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 3589 }
3046 3590
3047 ev_embed_start (EV_A_ w); 3591 ev_embed_start (EV_A_ w);
3048} 3592}
3049 3593
… …
3060{ 3604{
3061 if (expect_false (ev_is_active (w))) 3605 if (expect_false (ev_is_active (w)))
3062 return; 3606 return;
3063 3607
3064 { 3608 {
3065 struct ev_loop *loop = w->other; 3609 EV_P = w->other;
3066 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3610 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3067 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3611 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3068 } 3612 }
3069 3613
3070 EV_FREQUENT_CHECK; 3614 EV_FREQUENT_CHECK;
… …
3097 3641
3098 ev_io_stop (EV_A_ &w->io); 3642 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 3643 ev_prepare_stop (EV_A_ &w->prepare);
3100 ev_fork_stop (EV_A_ &w->fork); 3644 ev_fork_stop (EV_A_ &w->fork);
3101 3645
3646 ev_stop (EV_A_ (W)w);
3647
3102 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
3103} 3649}
3104#endif 3650#endif
3105 3651
3106#if EV_FORK_ENABLE 3652#if EV_FORK_ENABLE
… …
3139 3685
3140 EV_FREQUENT_CHECK; 3686 EV_FREQUENT_CHECK;
3141} 3687}
3142#endif 3688#endif
3143 3689
3144#if EV_ASYNC_ENABLE 3690#if EV_CLEANUP_ENABLE
3145void 3691void
3146ev_async_start (EV_P_ ev_async *w) 3692ev_cleanup_start (EV_P_ ev_cleanup *w)
3147{ 3693{
3148 if (expect_false (ev_is_active (w))) 3694 if (expect_false (ev_is_active (w)))
3149 return; 3695 return;
3696
3697 EV_FREQUENT_CHECK;
3698
3699 ev_start (EV_A_ (W)w, ++cleanupcnt);
3700 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3701 cleanups [cleanupcnt - 1] = w;
3702
3703 /* cleanup watchers should never keep a refcount on the loop */
3704 ev_unref (EV_A);
3705 EV_FREQUENT_CHECK;
3706}
3707
3708void
3709ev_cleanup_stop (EV_P_ ev_cleanup *w)
3710{
3711 clear_pending (EV_A_ (W)w);
3712 if (expect_false (!ev_is_active (w)))
3713 return;
3714
3715 EV_FREQUENT_CHECK;
3716 ev_ref (EV_A);
3717
3718 {
3719 int active = ev_active (w);
3720
3721 cleanups [active - 1] = cleanups [--cleanupcnt];
3722 ev_active (cleanups [active - 1]) = active;
3723 }
3724
3725 ev_stop (EV_A_ (W)w);
3726
3727 EV_FREQUENT_CHECK;
3728}
3729#endif
3730
3731#if EV_ASYNC_ENABLE
3732void
3733ev_async_start (EV_P_ ev_async *w)
3734{
3735 if (expect_false (ev_is_active (w)))
3736 return;
3737
3738 w->sent = 0;
3150 3739
3151 evpipe_init (EV_A); 3740 evpipe_init (EV_A);
3152 3741
3153 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
3154 3743
… …
3182 3771
3183void 3772void
3184ev_async_send (EV_P_ ev_async *w) 3773ev_async_send (EV_P_ ev_async *w)
3185{ 3774{
3186 w->sent = 1; 3775 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 3776 evpipe_write (EV_A_ &async_pending);
3188} 3777}
3189#endif 3778#endif
3190 3779
3191/*****************************************************************************/ 3780/*****************************************************************************/
3192 3781
… …
3232{ 3821{
3233 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3822 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3234 3823
3235 if (expect_false (!once)) 3824 if (expect_false (!once))
3236 { 3825 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3826 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3238 return; 3827 return;
3239 } 3828 }
3240 3829
3241 once->cb = cb; 3830 once->cb = cb;
3242 once->arg = arg; 3831 once->arg = arg;
… …
3329 if (types & EV_ASYNC) 3918 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 3919 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 3920 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 3921#endif
3333 3922
3923#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 3924 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 3925 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 3926# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 3927 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 3928# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 3929 cb (EV_A_ EV_PREPARE, prepares [i]);
3930#endif
3340 3931
3932#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 3933 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 3934 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 3935 cb (EV_A_ EV_CHECK, checks [i]);
3936#endif
3344 3937
3938#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 3939 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 3940 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 3941 for (wl = signals [i].head; wl; )
3348 { 3942 {
3349 wn = wl->next; 3943 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 3944 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 3945 wl = wn;
3352 } 3946 }
3947#endif
3353 3948
3949#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 3950 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 3951 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 3952 for (wl = childs [i]; wl; )
3357 { 3953 {
3358 wn = wl->next; 3954 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 3955 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 3956 wl = wn;
3361 } 3957 }
3958#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 3959/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3960/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 3961}
3365#endif 3962#endif
3366 3963
3367#if EV_MULTIPLICITY 3964#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 3965 #include "ev_wrap.h"
3369#endif 3966#endif
3370 3967
3371#ifdef __cplusplus 3968EV_CPP(})
3372}
3373#endif
3374 3969

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