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Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs.
Revision 1.388 by root, Fri Jul 29 12:17:26 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
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
174#endif 186#endif
187
188EV_CPP(extern "C" {)
175 189
176#ifndef _WIN32 190#ifndef _WIN32
177# include <sys/time.h> 191# include <sys/time.h>
178# include <sys/wait.h> 192# include <sys/wait.h>
179# include <unistd.h> 193# include <unistd.h>
… …
182# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 197# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
186# endif 200# endif
201# undef EV_AVOID_STDIO
187#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
188 211
189/* 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 */
190 213
191/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
204#elif defined (MAXSIG) 227#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1) 228# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 229#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1) 230# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 231#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 233#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 235#else
213# error "unable to find value for NSIG, please report" 236# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
215# define EV_NSIG 64 239# define EV_NSIG 65
216#endif 240#endif
217 241
218/* Default to some arbitrary number that's big enough to get most 242#ifndef EV_USE_FLOOR
219 of the common signals. 243# define EV_USE_FLOOR 0
220*/
221#ifndef NSIG
222# define NSIG 50
223#endif 244#endif
224/* <-- NSIG logic from Configure */ 245
225#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
226# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
227# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
228# else 249# else
229# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
230# endif 251# endif
231#endif 252#endif
232 253
233#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
234# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
235# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
236# else 257# else
237# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
238# endif 259# endif
239#endif 260#endif
240 261
… …
242# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
243#endif 264#endif
244 265
245#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
246# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
247# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
248# else 269# else
249# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
250# endif 271# endif
251#endif 272#endif
252 273
253#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
254# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
255#endif 276#endif
256 277
257#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
258# ifdef _WIN32 279# ifdef _WIN32
259# define EV_USE_POLL 0 280# define EV_USE_POLL 0
260# else 281# else
261# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
262# endif 283# endif
263#endif 284#endif
264 285
265#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
266# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
267# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
268# else 289# else
269# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
270# endif 291# endif
271#endif 292#endif
272 293
… …
278# define EV_USE_PORT 0 299# define EV_USE_PORT 0
279#endif 300#endif
280 301
281#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
282# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
283# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
284# else 305# else
285# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
286# endif 307# endif
287#endif 308#endif
288 309
289#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
290# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
291# define EV_PID_HASHSIZE 1
292# else
293# define EV_PID_HASHSIZE 16
294# endif
295#endif 312#endif
296 313
297#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
298# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
299# define EV_INOTIFY_HASHSIZE 1
300# else
301# define EV_INOTIFY_HASHSIZE 16
302# endif
303#endif 316#endif
304 317
305#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
306# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
307# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
308# else 321# else
309# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
310# endif 323# endif
311#endif 324#endif
312 325
313#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
316# else 329# else
317# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
318# endif 331# endif
319#endif 332#endif
320 333
… …
323# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
324# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
325#endif 338#endif
326 339
327#ifndef EV_VERIFY 340#ifndef EV_VERIFY
328# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
329#endif 342#endif
330 343
331#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
332# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
333#endif 346#endif
334 347
335#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
336# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
337#endif 350#endif
338 351
339/* 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, */
340/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
341#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
350# endif 363# endif
351#endif 364#endif
352 365
353/* 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 */
354 367
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
355#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
356# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
358#endif 377#endif
359 378
… …
366# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
368#endif 387#endif
369 388
370#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
372# include <sys/select.h> 392# include <sys/select.h>
373# endif 393# endif
374#endif 394#endif
375 395
376#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 397# include <sys/statfs.h>
379# include <sys/inotify.h> 398# include <sys/inotify.h>
380/* 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 */
381# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
393# include <stdint.h> 412# include <stdint.h>
394# ifndef EFD_NONBLOCK 413# ifndef EFD_NONBLOCK
395# define EFD_NONBLOCK O_NONBLOCK 414# define EFD_NONBLOCK O_NONBLOCK
396# endif 415# endif
397# ifndef EFD_CLOEXEC 416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
398# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
399# endif 422# endif
400# ifdef __cplusplus 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401extern "C" { 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
402# endif 431# endif
403int eventfd (unsigned int initval, int flags); 432# ifndef SFD_CLOEXEC
404# ifdef __cplusplus 433# ifdef O_CLOEXEC
405} 434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
406# endif 438# endif
407#endif 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
408 440
409#if EV_USE_SIGNALFD 441struct signalfd_siginfo
410# include <sys/signalfd.h> 442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
411#endif 446#endif
412 447
413/**/ 448/**/
414 449
415#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
416# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
417#else 452#else
418# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
419#endif 454#endif
420 455
421/* 456/*
422 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
423 * It is added to ev_rt_now when scheduling periodics
424 * to ensure progress, time-wise, even when rounding
425 * errors are against us.
426 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
427 * Better solutions welcome.
428 */ 459 */
429#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 */
430 462
431#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) */
432#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) */
433/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
434 465
435#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
436# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
437# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
438#else 493#else
439# define expect(expr,value) (expr) 494 #define ecb_inline static
440# define noinline
441# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
442# define inline
443# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
444#endif 508 #endif
509#endif
445 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32)
521 #include <WinNT.h>
522 #define ECB_MEMORY_FENCE MemoryBarrier ()
523 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
524 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
525 #endif
526#endif
527
528#ifndef ECB_MEMORY_FENCE
529 #include <pthread.h>
530
531 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
532 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
533 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
534 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
535#endif
536
537#if ECB_GCC_VERSION(3,1)
538 #define ecb_attribute(attrlist) __attribute__(attrlist)
539 #define ecb_is_constant(expr) __builtin_constant_p (expr)
540 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
541 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
542#else
543 #define ecb_attribute(attrlist)
544 #define ecb_is_constant(expr) 0
545 #define ecb_expect(expr,value) (expr)
546 #define ecb_prefetch(addr,rw,locality)
547#endif
548
549#define ecb_noinline ecb_attribute ((__noinline__))
550#define ecb_noreturn ecb_attribute ((__noreturn__))
551#define ecb_unused ecb_attribute ((__unused__))
552#define ecb_const ecb_attribute ((__const__))
553#define ecb_pure ecb_attribute ((__pure__))
554
555#if ECB_GCC_VERSION(4,3)
556 #define ecb_artificial ecb_attribute ((__artificial__))
557 #define ecb_hot ecb_attribute ((__hot__))
558 #define ecb_cold ecb_attribute ((__cold__))
559#else
560 #define ecb_artificial
561 #define ecb_hot
562 #define ecb_cold
563#endif
564
565/* put around conditional expressions if you are very sure that the */
566/* expression is mostly true or mostly false. note that these return */
567/* booleans, not the expression. */
446#define expect_false(expr) expect ((expr) != 0, 0) 568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
447#define expect_true(expr) expect ((expr) != 0, 1) 569#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
570/* ecb.h end */
571
572#define expect_false(cond) ecb_expect_false (cond)
573#define expect_true(cond) ecb_expect_true (cond)
574#define noinline ecb_noinline
575
448#define inline_size static inline 576#define inline_size ecb_inline
449 577
450#if EV_MINIMAL 578#if EV_FEATURE_CODE
579# define inline_speed ecb_inline
580#else
451# define inline_speed static noinline 581# define inline_speed static noinline
452#else
453# define inline_speed static inline
454#endif 582#endif
455 583
456#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 584#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
457 585
458#if EV_MINPRI == EV_MAXPRI 586#if EV_MINPRI == EV_MAXPRI
… …
471#define ev_active(w) ((W)(w))->active 599#define ev_active(w) ((W)(w))->active
472#define ev_at(w) ((WT)(w))->at 600#define ev_at(w) ((WT)(w))->at
473 601
474#if EV_USE_REALTIME 602#if EV_USE_REALTIME
475/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 603/* sig_atomic_t is used to avoid per-thread variables or locking but still */
476/* giving it a reasonably high chance of working on typical architetcures */ 604/* giving it a reasonably high chance of working on typical architectures */
477static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 605static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
478#endif 606#endif
479 607
480#if EV_USE_MONOTONIC 608#if EV_USE_MONOTONIC
481static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 609static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
482#endif 610#endif
483 611
612#ifndef EV_FD_TO_WIN32_HANDLE
613# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
614#endif
615#ifndef EV_WIN32_HANDLE_TO_FD
616# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
617#endif
618#ifndef EV_WIN32_CLOSE_FD
619# define EV_WIN32_CLOSE_FD(fd) close (fd)
620#endif
621
484#ifdef _WIN32 622#ifdef _WIN32
485# include "ev_win32.c" 623# include "ev_win32.c"
486#endif 624#endif
487 625
488/*****************************************************************************/ 626/*****************************************************************************/
489 627
628/* define a suitable floor function (only used by periodics atm) */
629
630#if EV_USE_FLOOR
631# include <math.h>
632# define ev_floor(v) floor (v)
633#else
634
635#include <float.h>
636
637/* a floor() replacement function, should be independent of ev_tstamp type */
638static ev_tstamp noinline
639ev_floor (ev_tstamp v)
640{
641 /* the choice of shift factor is not terribly important */
642#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
643 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
644#else
645 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
646#endif
647
648 /* argument too large for an unsigned long? */
649 if (expect_false (v >= shift))
650 {
651 ev_tstamp f;
652
653 if (v == v - 1.)
654 return v; /* very large number */
655
656 f = shift * ev_floor (v * (1. / shift));
657 return f + ev_floor (v - f);
658 }
659
660 /* special treatment for negative args? */
661 if (expect_false (v < 0.))
662 {
663 ev_tstamp f = -ev_floor (-v);
664
665 return f - (f == v ? 0 : 1);
666 }
667
668 /* fits into an unsigned long */
669 return (unsigned long)v;
670}
671
672#endif
673
674/*****************************************************************************/
675
676#ifdef __linux
677# include <sys/utsname.h>
678#endif
679
680static unsigned int noinline ecb_cold
681ev_linux_version (void)
682{
683#ifdef __linux
684 unsigned int v = 0;
685 struct utsname buf;
686 int i;
687 char *p = buf.release;
688
689 if (uname (&buf))
690 return 0;
691
692 for (i = 3+1; --i; )
693 {
694 unsigned int c = 0;
695
696 for (;;)
697 {
698 if (*p >= '0' && *p <= '9')
699 c = c * 10 + *p++ - '0';
700 else
701 {
702 p += *p == '.';
703 break;
704 }
705 }
706
707 v = (v << 8) | c;
708 }
709
710 return v;
711#else
712 return 0;
713#endif
714}
715
716/*****************************************************************************/
717
718#if EV_AVOID_STDIO
719static void noinline ecb_cold
720ev_printerr (const char *msg)
721{
722 write (STDERR_FILENO, msg, strlen (msg));
723}
724#endif
725
490static void (*syserr_cb)(const char *msg); 726static void (*syserr_cb)(const char *msg);
491 727
492void 728void ecb_cold
493ev_set_syserr_cb (void (*cb)(const char *msg)) 729ev_set_syserr_cb (void (*cb)(const char *msg))
494{ 730{
495 syserr_cb = cb; 731 syserr_cb = cb;
496} 732}
497 733
498static void noinline 734static void noinline ecb_cold
499ev_syserr (const char *msg) 735ev_syserr (const char *msg)
500{ 736{
501 if (!msg) 737 if (!msg)
502 msg = "(libev) system error"; 738 msg = "(libev) system error";
503 739
504 if (syserr_cb) 740 if (syserr_cb)
505 syserr_cb (msg); 741 syserr_cb (msg);
506 else 742 else
507 { 743 {
744#if EV_AVOID_STDIO
745 ev_printerr (msg);
746 ev_printerr (": ");
747 ev_printerr (strerror (errno));
748 ev_printerr ("\n");
749#else
508 perror (msg); 750 perror (msg);
751#endif
509 abort (); 752 abort ();
510 } 753 }
511} 754}
512 755
513static void * 756static void *
514ev_realloc_emul (void *ptr, long size) 757ev_realloc_emul (void *ptr, long size)
515{ 758{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
516 /* some systems, notably openbsd and darwin, fail to properly 762 /* some systems, notably openbsd and darwin, fail to properly
517 * implement realloc (x, 0) (as required by both ansi c-98 and 763 * implement realloc (x, 0) (as required by both ansi c-89 and
518 * the single unix specification, so work around them here. 764 * the single unix specification, so work around them here.
519 */ 765 */
520 766
521 if (size) 767 if (size)
522 return realloc (ptr, size); 768 return realloc (ptr, size);
523 769
524 free (ptr); 770 free (ptr);
525 return 0; 771 return 0;
772#endif
526} 773}
527 774
528static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
529 776
530void 777void ecb_cold
531ev_set_allocator (void *(*cb)(void *ptr, long size)) 778ev_set_allocator (void *(*cb)(void *ptr, long size))
532{ 779{
533 alloc = cb; 780 alloc = cb;
534} 781}
535 782
… …
538{ 785{
539 ptr = alloc (ptr, size); 786 ptr = alloc (ptr, size);
540 787
541 if (!ptr && size) 788 if (!ptr && size)
542 { 789 {
790#if EV_AVOID_STDIO
791 ev_printerr ("(libev) memory allocation failed, aborting.\n");
792#else
543 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 793 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
794#endif
544 abort (); 795 abort ();
545 } 796 }
546 797
547 return ptr; 798 return ptr;
548} 799}
… …
564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 815 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
565 unsigned char unused; 816 unsigned char unused;
566#if EV_USE_EPOLL 817#if EV_USE_EPOLL
567 unsigned int egen; /* generation counter to counter epoll bugs */ 818 unsigned int egen; /* generation counter to counter epoll bugs */
568#endif 819#endif
569#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
570 SOCKET handle; 821 SOCKET handle;
822#endif
823#if EV_USE_IOCP
824 OVERLAPPED or, ow;
571#endif 825#endif
572} ANFD; 826} ANFD;
573 827
574/* stores the pending event set for a given watcher */ 828/* stores the pending event set for a given watcher */
575typedef struct 829typedef struct
… …
630 884
631 static int ev_default_loop_ptr; 885 static int ev_default_loop_ptr;
632 886
633#endif 887#endif
634 888
635#if EV_MINIMAL < 2 889#if EV_FEATURE_API
636# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 890# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
637# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 891# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
638# define EV_INVOKE_PENDING invoke_cb (EV_A) 892# define EV_INVOKE_PENDING invoke_cb (EV_A)
639#else 893#else
640# define EV_RELEASE_CB (void)0 894# define EV_RELEASE_CB (void)0
641# define EV_ACQUIRE_CB (void)0 895# define EV_ACQUIRE_CB (void)0
642# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 896# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
643#endif 897#endif
644 898
645#define EVUNLOOP_RECURSE 0x80 899#define EVBREAK_RECURSE 0x80
646 900
647/*****************************************************************************/ 901/*****************************************************************************/
648 902
649#ifndef EV_HAVE_EV_TIME 903#ifndef EV_HAVE_EV_TIME
650ev_tstamp 904ev_tstamp
… …
694 if (delay > 0.) 948 if (delay > 0.)
695 { 949 {
696#if EV_USE_NANOSLEEP 950#if EV_USE_NANOSLEEP
697 struct timespec ts; 951 struct timespec ts;
698 952
699 ts.tv_sec = (time_t)delay; 953 EV_TS_SET (ts, delay);
700 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
701
702 nanosleep (&ts, 0); 954 nanosleep (&ts, 0);
703#elif defined(_WIN32) 955#elif defined(_WIN32)
704 Sleep ((unsigned long)(delay * 1e3)); 956 Sleep ((unsigned long)(delay * 1e3));
705#else 957#else
706 struct timeval tv; 958 struct timeval tv;
707 959
708 tv.tv_sec = (time_t)delay;
709 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
710
711 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 960 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
712 /* something not guaranteed by newer posix versions, but guaranteed */ 961 /* something not guaranteed by newer posix versions, but guaranteed */
713 /* by older ones */ 962 /* by older ones */
963 EV_TV_SET (tv, delay);
714 select (0, 0, 0, 0, &tv); 964 select (0, 0, 0, 0, &tv);
715#endif 965#endif
716 } 966 }
717} 967}
718 968
719/*****************************************************************************/ 969/*****************************************************************************/
720 970
721#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 971#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
722 972
723/* find a suitable new size for the given array, */ 973/* find a suitable new size for the given array, */
724/* hopefully by rounding to a ncie-to-malloc size */ 974/* hopefully by rounding to a nice-to-malloc size */
725inline_size int 975inline_size int
726array_nextsize (int elem, int cur, int cnt) 976array_nextsize (int elem, int cur, int cnt)
727{ 977{
728 int ncur = cur + 1; 978 int ncur = cur + 1;
729 979
… …
741 } 991 }
742 992
743 return ncur; 993 return ncur;
744} 994}
745 995
746static noinline void * 996static void * noinline ecb_cold
747array_realloc (int elem, void *base, int *cur, int cnt) 997array_realloc (int elem, void *base, int *cur, int cnt)
748{ 998{
749 *cur = array_nextsize (elem, *cur, cnt); 999 *cur = array_nextsize (elem, *cur, cnt);
750 return ev_realloc (base, elem * *cur); 1000 return ev_realloc (base, elem * *cur);
751} 1001}
… …
754 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1004 memset ((void *)(base), 0, sizeof (*(base)) * (count))
755 1005
756#define array_needsize(type,base,cur,cnt,init) \ 1006#define array_needsize(type,base,cur,cnt,init) \
757 if (expect_false ((cnt) > (cur))) \ 1007 if (expect_false ((cnt) > (cur))) \
758 { \ 1008 { \
759 int ocur_ = (cur); \ 1009 int ecb_unused ocur_ = (cur); \
760 (base) = (type *)array_realloc \ 1010 (base) = (type *)array_realloc \
761 (sizeof (type), (base), &(cur), (cnt)); \ 1011 (sizeof (type), (base), &(cur), (cnt)); \
762 init ((base) + (ocur_), (cur) - ocur_); \ 1012 init ((base) + (ocur_), (cur) - ocur_); \
763 } 1013 }
764 1014
… …
825} 1075}
826 1076
827/*****************************************************************************/ 1077/*****************************************************************************/
828 1078
829inline_speed void 1079inline_speed void
830fd_event_nc (EV_P_ int fd, int revents) 1080fd_event_nocheck (EV_P_ int fd, int revents)
831{ 1081{
832 ANFD *anfd = anfds + fd; 1082 ANFD *anfd = anfds + fd;
833 ev_io *w; 1083 ev_io *w;
834 1084
835 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1085 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
847fd_event (EV_P_ int fd, int revents) 1097fd_event (EV_P_ int fd, int revents)
848{ 1098{
849 ANFD *anfd = anfds + fd; 1099 ANFD *anfd = anfds + fd;
850 1100
851 if (expect_true (!anfd->reify)) 1101 if (expect_true (!anfd->reify))
852 fd_event_nc (EV_A_ fd, revents); 1102 fd_event_nocheck (EV_A_ fd, revents);
853} 1103}
854 1104
855void 1105void
856ev_feed_fd_event (EV_P_ int fd, int revents) 1106ev_feed_fd_event (EV_P_ int fd, int revents)
857{ 1107{
858 if (fd >= 0 && fd < anfdmax) 1108 if (fd >= 0 && fd < anfdmax)
859 fd_event_nc (EV_A_ fd, revents); 1109 fd_event_nocheck (EV_A_ fd, revents);
860} 1110}
861 1111
862/* make sure the external fd watch events are in-sync */ 1112/* make sure the external fd watch events are in-sync */
863/* with the kernel/libev internal state */ 1113/* with the kernel/libev internal state */
864inline_size void 1114inline_size void
865fd_reify (EV_P) 1115fd_reify (EV_P)
866{ 1116{
867 int i; 1117 int i;
868 1118
1119#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1120 for (i = 0; i < fdchangecnt; ++i)
1121 {
1122 int fd = fdchanges [i];
1123 ANFD *anfd = anfds + fd;
1124
1125 if (anfd->reify & EV__IOFDSET && anfd->head)
1126 {
1127 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1128
1129 if (handle != anfd->handle)
1130 {
1131 unsigned long arg;
1132
1133 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1134
1135 /* handle changed, but fd didn't - we need to do it in two steps */
1136 backend_modify (EV_A_ fd, anfd->events, 0);
1137 anfd->events = 0;
1138 anfd->handle = handle;
1139 }
1140 }
1141 }
1142#endif
1143
869 for (i = 0; i < fdchangecnt; ++i) 1144 for (i = 0; i < fdchangecnt; ++i)
870 { 1145 {
871 int fd = fdchanges [i]; 1146 int fd = fdchanges [i];
872 ANFD *anfd = anfds + fd; 1147 ANFD *anfd = anfds + fd;
873 ev_io *w; 1148 ev_io *w;
874 1149
875 unsigned char events = 0; 1150 unsigned char o_events = anfd->events;
1151 unsigned char o_reify = anfd->reify;
876 1152
877 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1153 anfd->reify = 0;
878 events |= (unsigned char)w->events;
879 1154
880#if EV_SELECT_IS_WINSOCKET 1155 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
881 if (events)
882 { 1156 {
883 unsigned long arg; 1157 anfd->events = 0;
884 #ifdef EV_FD_TO_WIN32_HANDLE 1158
885 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
886 #else 1160 anfd->events |= (unsigned char)w->events;
887 anfd->handle = _get_osfhandle (fd); 1161
888 #endif 1162 if (o_events != anfd->events)
889 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1163 o_reify = EV__IOFDSET; /* actually |= */
890 } 1164 }
891#endif
892 1165
893 { 1166 if (o_reify & EV__IOFDSET)
894 unsigned char o_events = anfd->events;
895 unsigned char o_reify = anfd->reify;
896
897 anfd->reify = 0;
898 anfd->events = events;
899
900 if (o_events != events || o_reify & EV__IOFDSET)
901 backend_modify (EV_A_ fd, o_events, events); 1167 backend_modify (EV_A_ fd, o_events, anfd->events);
902 }
903 } 1168 }
904 1169
905 fdchangecnt = 0; 1170 fdchangecnt = 0;
906} 1171}
907 1172
… …
919 fdchanges [fdchangecnt - 1] = fd; 1184 fdchanges [fdchangecnt - 1] = fd;
920 } 1185 }
921} 1186}
922 1187
923/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
924inline_speed void 1189inline_speed void ecb_cold
925fd_kill (EV_P_ int fd) 1190fd_kill (EV_P_ int fd)
926{ 1191{
927 ev_io *w; 1192 ev_io *w;
928 1193
929 while ((w = (ev_io *)anfds [fd].head)) 1194 while ((w = (ev_io *)anfds [fd].head))
… …
931 ev_io_stop (EV_A_ w); 1196 ev_io_stop (EV_A_ w);
932 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
933 } 1198 }
934} 1199}
935 1200
936/* check whether the given fd is atcually valid, for error recovery */ 1201/* check whether the given fd is actually valid, for error recovery */
937inline_size int 1202inline_size int ecb_cold
938fd_valid (int fd) 1203fd_valid (int fd)
939{ 1204{
940#ifdef _WIN32 1205#ifdef _WIN32
941 return _get_osfhandle (fd) != -1; 1206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942#else 1207#else
943 return fcntl (fd, F_GETFD) != -1; 1208 return fcntl (fd, F_GETFD) != -1;
944#endif 1209#endif
945} 1210}
946 1211
947/* called on EBADF to verify fds */ 1212/* called on EBADF to verify fds */
948static void noinline 1213static void noinline ecb_cold
949fd_ebadf (EV_P) 1214fd_ebadf (EV_P)
950{ 1215{
951 int fd; 1216 int fd;
952 1217
953 for (fd = 0; fd < anfdmax; ++fd) 1218 for (fd = 0; fd < anfdmax; ++fd)
… …
955 if (!fd_valid (fd) && errno == EBADF) 1220 if (!fd_valid (fd) && errno == EBADF)
956 fd_kill (EV_A_ fd); 1221 fd_kill (EV_A_ fd);
957} 1222}
958 1223
959/* called on ENOMEM in select/poll to kill some fds and retry */ 1224/* called on ENOMEM in select/poll to kill some fds and retry */
960static void noinline 1225static void noinline ecb_cold
961fd_enomem (EV_P) 1226fd_enomem (EV_P)
962{ 1227{
963 int fd; 1228 int fd;
964 1229
965 for (fd = anfdmax; fd--; ) 1230 for (fd = anfdmax; fd--; )
966 if (anfds [fd].events) 1231 if (anfds [fd].events)
967 { 1232 {
968 fd_kill (EV_A_ fd); 1233 fd_kill (EV_A_ fd);
969 return; 1234 break;
970 } 1235 }
971} 1236}
972 1237
973/* usually called after fork if backend needs to re-arm all fds from scratch */ 1238/* usually called after fork if backend needs to re-arm all fds from scratch */
974static void noinline 1239static void noinline
… …
983 anfds [fd].emask = 0; 1248 anfds [fd].emask = 0;
984 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1249 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
985 } 1250 }
986} 1251}
987 1252
1253/* used to prepare libev internal fd's */
1254/* this is not fork-safe */
1255inline_speed void
1256fd_intern (int fd)
1257{
1258#ifdef _WIN32
1259 unsigned long arg = 1;
1260 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1261#else
1262 fcntl (fd, F_SETFD, FD_CLOEXEC);
1263 fcntl (fd, F_SETFL, O_NONBLOCK);
1264#endif
1265}
1266
988/*****************************************************************************/ 1267/*****************************************************************************/
989 1268
990/* 1269/*
991 * the heap functions want a real array index. array index 0 uis guaranteed to not 1270 * the heap functions want a real array index. array index 0 is guaranteed to not
992 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1271 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
993 * the branching factor of the d-tree. 1272 * the branching factor of the d-tree.
994 */ 1273 */
995 1274
996/* 1275/*
… …
1064 1343
1065 for (;;) 1344 for (;;)
1066 { 1345 {
1067 int c = k << 1; 1346 int c = k << 1;
1068 1347
1069 if (c > N + HEAP0 - 1) 1348 if (c >= N + HEAP0)
1070 break; 1349 break;
1071 1350
1072 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1351 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073 ? 1 : 0; 1352 ? 1 : 0;
1074 1353
… …
1110 1389
1111/* move an element suitably so it is in a correct place */ 1390/* move an element suitably so it is in a correct place */
1112inline_size void 1391inline_size void
1113adjustheap (ANHE *heap, int N, int k) 1392adjustheap (ANHE *heap, int N, int k)
1114{ 1393{
1115 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1394 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116 upheap (heap, k); 1395 upheap (heap, k);
1117 else 1396 else
1118 downheap (heap, N, k); 1397 downheap (heap, N, k);
1119} 1398}
1120 1399
… …
1133/*****************************************************************************/ 1412/*****************************************************************************/
1134 1413
1135/* associate signal watchers to a signal signal */ 1414/* associate signal watchers to a signal signal */
1136typedef struct 1415typedef struct
1137{ 1416{
1417 EV_ATOMIC_T pending;
1418#if EV_MULTIPLICITY
1419 EV_P;
1420#endif
1138 WL head; 1421 WL head;
1139 EV_ATOMIC_T gotsig;
1140} ANSIG; 1422} ANSIG;
1141 1423
1142static ANSIG *signals; 1424static ANSIG signals [EV_NSIG - 1];
1143static int signalmax;
1144
1145static EV_ATOMIC_T gotsig;
1146 1425
1147/*****************************************************************************/ 1426/*****************************************************************************/
1148 1427
1149/* used to prepare libev internal fd's */ 1428#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1150/* this is not fork-safe */
1151inline_speed void
1152fd_intern (int fd)
1153{
1154#ifdef _WIN32
1155 unsigned long arg = 1;
1156 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1157#else
1158 fcntl (fd, F_SETFD, FD_CLOEXEC);
1159 fcntl (fd, F_SETFL, O_NONBLOCK);
1160#endif
1161}
1162 1429
1163static void noinline 1430static void noinline ecb_cold
1164evpipe_init (EV_P) 1431evpipe_init (EV_P)
1165{ 1432{
1166 if (!ev_is_active (&pipe_w)) 1433 if (!ev_is_active (&pipe_w))
1167 { 1434 {
1168#if EV_USE_EVENTFD 1435# if EV_USE_EVENTFD
1169 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1170 if (evfd < 0 && errno == EINVAL) 1437 if (evfd < 0 && errno == EINVAL)
1171 evfd = eventfd (0, 0); 1438 evfd = eventfd (0, 0);
1172 1439
1173 if (evfd >= 0) 1440 if (evfd >= 0)
… …
1175 evpipe [0] = -1; 1442 evpipe [0] = -1;
1176 fd_intern (evfd); /* doing it twice doesn't hurt */ 1443 fd_intern (evfd); /* doing it twice doesn't hurt */
1177 ev_io_set (&pipe_w, evfd, EV_READ); 1444 ev_io_set (&pipe_w, evfd, EV_READ);
1178 } 1445 }
1179 else 1446 else
1180#endif 1447# endif
1181 { 1448 {
1182 while (pipe (evpipe)) 1449 while (pipe (evpipe))
1183 ev_syserr ("(libev) error creating signal/async pipe"); 1450 ev_syserr ("(libev) error creating signal/async pipe");
1184 1451
1185 fd_intern (evpipe [0]); 1452 fd_intern (evpipe [0]);
… …
1190 ev_io_start (EV_A_ &pipe_w); 1457 ev_io_start (EV_A_ &pipe_w);
1191 ev_unref (EV_A); /* watcher should not keep loop alive */ 1458 ev_unref (EV_A); /* watcher should not keep loop alive */
1192 } 1459 }
1193} 1460}
1194 1461
1195inline_size void 1462inline_speed void
1196evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1197{ 1464{
1198 if (!*flag) 1465 if (expect_true (*flag))
1466 return;
1467
1468 *flag = 1;
1469
1470 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1471
1472 pipe_write_skipped = 1;
1473
1474 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1475
1476 if (pipe_write_wanted)
1199 { 1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
1200 int old_errno = errno; /* save errno because write might clobber it */ 1482 old_errno = errno; /* save errno because write will clobber it */
1201
1202 *flag = 1;
1203 1483
1204#if EV_USE_EVENTFD 1484#if EV_USE_EVENTFD
1205 if (evfd >= 0) 1485 if (evfd >= 0)
1206 { 1486 {
1207 uint64_t counter = 1; 1487 uint64_t counter = 1;
1208 write (evfd, &counter, sizeof (uint64_t)); 1488 write (evfd, &counter, sizeof (uint64_t));
1209 } 1489 }
1210 else 1490 else
1211#endif 1491#endif
1492 {
1493 /* win32 people keep sending patches that change this write() to send() */
1494 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1495 /* so when you think this write should be a send instead, please find out */
1496 /* where your send() is from - it's definitely not the microsoft send, and */
1497 /* tell me. thank you. */
1212 write (evpipe [1], &old_errno, 1); 1498 write (evpipe [1], &(evpipe [1]), 1);
1499 }
1213 1500
1214 errno = old_errno; 1501 errno = old_errno;
1215 } 1502 }
1216} 1503}
1217 1504
1218/* called whenever the libev signal pipe */ 1505/* called whenever the libev signal pipe */
1219/* got some events (signal, async) */ 1506/* got some events (signal, async) */
1220static void 1507static void
1221pipecb (EV_P_ ev_io *iow, int revents) 1508pipecb (EV_P_ ev_io *iow, int revents)
1222{ 1509{
1510 int i;
1511
1512 if (revents & EV_READ)
1513 {
1223#if EV_USE_EVENTFD 1514#if EV_USE_EVENTFD
1224 if (evfd >= 0) 1515 if (evfd >= 0)
1225 { 1516 {
1226 uint64_t counter; 1517 uint64_t counter;
1227 read (evfd, &counter, sizeof (uint64_t)); 1518 read (evfd, &counter, sizeof (uint64_t));
1228 } 1519 }
1229 else 1520 else
1230#endif 1521#endif
1231 { 1522 {
1232 char dummy; 1523 char dummy;
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1233 read (evpipe [0], &dummy, 1); 1525 read (evpipe [0], &dummy, 1);
1526 }
1527 }
1528
1529 pipe_write_skipped = 0;
1530
1531#if EV_SIGNAL_ENABLE
1532 if (sig_pending)
1234 } 1533 {
1534 sig_pending = 0;
1235 1535
1236 if (gotsig && ev_is_default_loop (EV_A)) 1536 for (i = EV_NSIG - 1; i--; )
1237 { 1537 if (expect_false (signals [i].pending))
1238 int signum;
1239 gotsig = 0;
1240
1241 for (signum = signalmax; signum--; )
1242 if (signals [signum].gotsig)
1243 ev_feed_signal_event (EV_A_ signum + 1); 1538 ev_feed_signal_event (EV_A_ i + 1);
1244 } 1539 }
1540#endif
1245 1541
1246#if EV_ASYNC_ENABLE 1542#if EV_ASYNC_ENABLE
1247 if (gotasync) 1543 if (async_pending)
1248 { 1544 {
1249 int i; 1545 async_pending = 0;
1250 gotasync = 0;
1251 1546
1252 for (i = asynccnt; i--; ) 1547 for (i = asynccnt; i--; )
1253 if (asyncs [i]->sent) 1548 if (asyncs [i]->sent)
1254 { 1549 {
1255 asyncs [i]->sent = 0; 1550 asyncs [i]->sent = 0;
… …
1259#endif 1554#endif
1260} 1555}
1261 1556
1262/*****************************************************************************/ 1557/*****************************************************************************/
1263 1558
1559void
1560ev_feed_signal (int signum)
1561{
1562#if EV_MULTIPLICITY
1563 EV_P = signals [signum - 1].loop;
1564
1565 if (!EV_A)
1566 return;
1567#endif
1568
1569 if (!ev_active (&pipe_w))
1570 return;
1571
1572 signals [signum - 1].pending = 1;
1573 evpipe_write (EV_A_ &sig_pending);
1574}
1575
1264static void 1576static void
1265ev_sighandler (int signum) 1577ev_sighandler (int signum)
1266{ 1578{
1267#if EV_MULTIPLICITY
1268 struct ev_loop *loop = &default_loop_struct;
1269#endif
1270
1271#if _WIN32 1579#ifdef _WIN32
1272 signal (signum, ev_sighandler); 1580 signal (signum, ev_sighandler);
1273#endif 1581#endif
1274 1582
1275 signals [signum - 1].gotsig = 1; 1583 ev_feed_signal (signum);
1276 evpipe_write (EV_A_ &gotsig);
1277} 1584}
1278 1585
1279void noinline 1586void noinline
1280ev_feed_signal_event (EV_P_ int signum) 1587ev_feed_signal_event (EV_P_ int signum)
1281{ 1588{
1282 WL w; 1589 WL w;
1283 1590
1591 if (expect_false (signum <= 0 || signum > EV_NSIG))
1592 return;
1593
1594 --signum;
1595
1284#if EV_MULTIPLICITY 1596#if EV_MULTIPLICITY
1285 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1597 /* it is permissible to try to feed a signal to the wrong loop */
1286#endif 1598 /* or, likely more useful, feeding a signal nobody is waiting for */
1287 1599
1288 --signum; 1600 if (expect_false (signals [signum].loop != EV_A))
1289
1290 if (signum < 0 || signum >= signalmax)
1291 return; 1601 return;
1602#endif
1292 1603
1293 signals [signum].gotsig = 0; 1604 signals [signum].pending = 0;
1294 1605
1295 for (w = signals [signum].head; w; w = w->next) 1606 for (w = signals [signum].head; w; w = w->next)
1296 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297} 1608}
1298 1609
1299#if EV_USE_SIGNALFD 1610#if EV_USE_SIGNALFD
1300static void 1611static void
1301sigfdcb (EV_P_ ev_io *iow, int revents) 1612sigfdcb (EV_P_ ev_io *iow, int revents)
1302{ 1613{
1303 struct signalfd_siginfo si[4], *sip; 1614 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1304 1615
1305 for (;;) 1616 for (;;)
1306 { 1617 {
1307 ssize_t res = read (sigfd, si, sizeof (si)); 1618 ssize_t res = read (sigfd, si, sizeof (si));
1308 1619
… …
1314 break; 1625 break;
1315 } 1626 }
1316} 1627}
1317#endif 1628#endif
1318 1629
1630#endif
1631
1319/*****************************************************************************/ 1632/*****************************************************************************/
1320 1633
1634#if EV_CHILD_ENABLE
1321static WL childs [EV_PID_HASHSIZE]; 1635static WL childs [EV_PID_HASHSIZE];
1322
1323#ifndef _WIN32
1324 1636
1325static ev_signal childev; 1637static ev_signal childev;
1326 1638
1327#ifndef WIFCONTINUED 1639#ifndef WIFCONTINUED
1328# define WIFCONTINUED(status) 0 1640# define WIFCONTINUED(status) 0
… …
1333child_reap (EV_P_ int chain, int pid, int status) 1645child_reap (EV_P_ int chain, int pid, int status)
1334{ 1646{
1335 ev_child *w; 1647 ev_child *w;
1336 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1648 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1337 1649
1338 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1650 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1339 { 1651 {
1340 if ((w->pid == pid || !w->pid) 1652 if ((w->pid == pid || !w->pid)
1341 && (!traced || (w->flags & 1))) 1653 && (!traced || (w->flags & 1)))
1342 { 1654 {
1343 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1655 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1368 /* make sure we are called again until all children have been reaped */ 1680 /* make sure we are called again until all children have been reaped */
1369 /* we need to do it this way so that the callback gets called before we continue */ 1681 /* we need to do it this way so that the callback gets called before we continue */
1370 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1371 1683
1372 child_reap (EV_A_ pid, pid, status); 1684 child_reap (EV_A_ pid, pid, status);
1373 if (EV_PID_HASHSIZE > 1) 1685 if ((EV_PID_HASHSIZE) > 1)
1374 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1686 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1375} 1687}
1376 1688
1377#endif 1689#endif
1378 1690
1379/*****************************************************************************/ 1691/*****************************************************************************/
1380 1692
1693#if EV_USE_IOCP
1694# include "ev_iocp.c"
1695#endif
1381#if EV_USE_PORT 1696#if EV_USE_PORT
1382# include "ev_port.c" 1697# include "ev_port.c"
1383#endif 1698#endif
1384#if EV_USE_KQUEUE 1699#if EV_USE_KQUEUE
1385# include "ev_kqueue.c" 1700# include "ev_kqueue.c"
… …
1392#endif 1707#endif
1393#if EV_USE_SELECT 1708#if EV_USE_SELECT
1394# include "ev_select.c" 1709# include "ev_select.c"
1395#endif 1710#endif
1396 1711
1397int 1712int ecb_cold
1398ev_version_major (void) 1713ev_version_major (void)
1399{ 1714{
1400 return EV_VERSION_MAJOR; 1715 return EV_VERSION_MAJOR;
1401} 1716}
1402 1717
1403int 1718int ecb_cold
1404ev_version_minor (void) 1719ev_version_minor (void)
1405{ 1720{
1406 return EV_VERSION_MINOR; 1721 return EV_VERSION_MINOR;
1407} 1722}
1408 1723
1409/* return true if we are running with elevated privileges and should ignore env variables */ 1724/* return true if we are running with elevated privileges and should ignore env variables */
1410int inline_size 1725int inline_size ecb_cold
1411enable_secure (void) 1726enable_secure (void)
1412{ 1727{
1413#ifdef _WIN32 1728#ifdef _WIN32
1414 return 0; 1729 return 0;
1415#else 1730#else
1416 return getuid () != geteuid () 1731 return getuid () != geteuid ()
1417 || getgid () != getegid (); 1732 || getgid () != getegid ();
1418#endif 1733#endif
1419} 1734}
1420 1735
1421unsigned int 1736unsigned int ecb_cold
1422ev_supported_backends (void) 1737ev_supported_backends (void)
1423{ 1738{
1424 unsigned int flags = 0; 1739 unsigned int flags = 0;
1425 1740
1426 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1430 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1431 1746
1432 return flags; 1747 return flags;
1433} 1748}
1434 1749
1435unsigned int 1750unsigned int ecb_cold
1436ev_recommended_backends (void) 1751ev_recommended_backends (void)
1437{ 1752{
1438 unsigned int flags = ev_supported_backends (); 1753 unsigned int flags = ev_supported_backends ();
1439 1754
1440#ifndef __NetBSD__ 1755#ifndef __NetBSD__
… …
1445#ifdef __APPLE__ 1760#ifdef __APPLE__
1446 /* only select works correctly on that "unix-certified" platform */ 1761 /* only select works correctly on that "unix-certified" platform */
1447 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1762 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1448 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1763 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1449#endif 1764#endif
1765#ifdef __FreeBSD__
1766 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1767#endif
1450 1768
1451 return flags; 1769 return flags;
1452} 1770}
1453 1771
1454unsigned int 1772unsigned int ecb_cold
1455ev_embeddable_backends (void) 1773ev_embeddable_backends (void)
1456{ 1774{
1457 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1458 1776
1459 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1777 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1460 /* please fix it and tell me how to detect the fix */ 1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1461 flags &= ~EVBACKEND_EPOLL; 1779 flags &= ~EVBACKEND_EPOLL;
1462 1780
1463 return flags; 1781 return flags;
1464} 1782}
1465 1783
1466unsigned int 1784unsigned int
1467ev_backend (EV_P) 1785ev_backend (EV_P)
1468{ 1786{
1469 return backend; 1787 return backend;
1470} 1788}
1471 1789
1472#if EV_MINIMAL < 2 1790#if EV_FEATURE_API
1473unsigned int 1791unsigned int
1474ev_loop_count (EV_P) 1792ev_iteration (EV_P)
1475{ 1793{
1476 return loop_count; 1794 return loop_count;
1477} 1795}
1478 1796
1479unsigned int 1797unsigned int
1480ev_loop_depth (EV_P) 1798ev_depth (EV_P)
1481{ 1799{
1482 return loop_depth; 1800 return loop_depth;
1483} 1801}
1484 1802
1485void 1803void
… …
1504ev_userdata (EV_P) 1822ev_userdata (EV_P)
1505{ 1823{
1506 return userdata; 1824 return userdata;
1507} 1825}
1508 1826
1827void
1509void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1828ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1510{ 1829{
1511 invoke_cb = invoke_pending_cb; 1830 invoke_cb = invoke_pending_cb;
1512} 1831}
1513 1832
1833void
1514void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1834ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1515{ 1835{
1516 release_cb = release; 1836 release_cb = release;
1517 acquire_cb = acquire; 1837 acquire_cb = acquire;
1518} 1838}
1519#endif 1839#endif
1520 1840
1521/* initialise a loop structure, must be zero-initialised */ 1841/* initialise a loop structure, must be zero-initialised */
1522static void noinline 1842static void noinline ecb_cold
1523loop_init (EV_P_ unsigned int flags) 1843loop_init (EV_P_ unsigned int flags)
1524{ 1844{
1525 if (!backend) 1845 if (!backend)
1526 { 1846 {
1847 origflags = flags;
1848
1527#if EV_USE_REALTIME 1849#if EV_USE_REALTIME
1528 if (!have_realtime) 1850 if (!have_realtime)
1529 { 1851 {
1530 struct timespec ts; 1852 struct timespec ts;
1531 1853
… …
1542 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1864 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543 have_monotonic = 1; 1865 have_monotonic = 1;
1544 } 1866 }
1545#endif 1867#endif
1546 1868
1547 ev_rt_now = ev_time ();
1548 mn_now = get_clock ();
1549 now_floor = mn_now;
1550 rtmn_diff = ev_rt_now - mn_now;
1551#if EV_MINIMAL < 2
1552 invoke_cb = ev_invoke_pending;
1553#endif
1554
1555 io_blocktime = 0.;
1556 timeout_blocktime = 0.;
1557 backend = 0;
1558 backend_fd = -1;
1559 gotasync = 0;
1560#if EV_USE_INOTIFY
1561 fs_fd = -2;
1562#endif
1563#if EV_USE_SIGNALFD
1564 sigfd = -2;
1565#endif
1566
1567 /* pid check not overridable via env */ 1869 /* pid check not overridable via env */
1568#ifndef _WIN32 1870#ifndef _WIN32
1569 if (flags & EVFLAG_FORKCHECK) 1871 if (flags & EVFLAG_FORKCHECK)
1570 curpid = getpid (); 1872 curpid = getpid ();
1571#endif 1873#endif
… …
1573 if (!(flags & EVFLAG_NOENV) 1875 if (!(flags & EVFLAG_NOENV)
1574 && !enable_secure () 1876 && !enable_secure ()
1575 && getenv ("LIBEV_FLAGS")) 1877 && getenv ("LIBEV_FLAGS"))
1576 flags = atoi (getenv ("LIBEV_FLAGS")); 1878 flags = atoi (getenv ("LIBEV_FLAGS"));
1577 1879
1578 if (!(flags & 0x0000ffffU)) 1880 ev_rt_now = ev_time ();
1881 mn_now = get_clock ();
1882 now_floor = mn_now;
1883 rtmn_diff = ev_rt_now - mn_now;
1884#if EV_FEATURE_API
1885 invoke_cb = ev_invoke_pending;
1886#endif
1887
1888 io_blocktime = 0.;
1889 timeout_blocktime = 0.;
1890 backend = 0;
1891 backend_fd = -1;
1892 sig_pending = 0;
1893#if EV_ASYNC_ENABLE
1894 async_pending = 0;
1895#endif
1896 pipe_write_skipped = 0;
1897 pipe_write_wanted = 0;
1898#if EV_USE_INOTIFY
1899 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1900#endif
1901#if EV_USE_SIGNALFD
1902 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1903#endif
1904
1905 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 1906 flags |= ev_recommended_backends ();
1580 1907
1908#if EV_USE_IOCP
1909 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1910#endif
1581#if EV_USE_PORT 1911#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1912 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 1913#endif
1584#if EV_USE_KQUEUE 1914#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1915 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1924 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595#endif 1925#endif
1596 1926
1597 ev_prepare_init (&pending_w, pendingcb); 1927 ev_prepare_init (&pending_w, pendingcb);
1598 1928
1929#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 1930 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 1931 ev_set_priority (&pipe_w, EV_MAXPRI);
1932#endif
1601 } 1933 }
1602} 1934}
1603 1935
1604/* free up a loop structure */ 1936/* free up a loop structure */
1605static void noinline 1937void ecb_cold
1606loop_destroy (EV_P) 1938ev_loop_destroy (EV_P)
1607{ 1939{
1608 int i; 1940 int i;
1941
1942#if EV_MULTIPLICITY
1943 /* mimic free (0) */
1944 if (!EV_A)
1945 return;
1946#endif
1947
1948#if EV_CLEANUP_ENABLE
1949 /* queue cleanup watchers (and execute them) */
1950 if (expect_false (cleanupcnt))
1951 {
1952 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1953 EV_INVOKE_PENDING;
1954 }
1955#endif
1956
1957#if EV_CHILD_ENABLE
1958 if (ev_is_active (&childev))
1959 {
1960 ev_ref (EV_A); /* child watcher */
1961 ev_signal_stop (EV_A_ &childev);
1962 }
1963#endif
1609 1964
1610 if (ev_is_active (&pipe_w)) 1965 if (ev_is_active (&pipe_w))
1611 { 1966 {
1612 /*ev_ref (EV_A);*/ 1967 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 1968 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1617 close (evfd); 1972 close (evfd);
1618#endif 1973#endif
1619 1974
1620 if (evpipe [0] >= 0) 1975 if (evpipe [0] >= 0)
1621 { 1976 {
1622 close (evpipe [0]); 1977 EV_WIN32_CLOSE_FD (evpipe [0]);
1623 close (evpipe [1]); 1978 EV_WIN32_CLOSE_FD (evpipe [1]);
1624 } 1979 }
1625 } 1980 }
1626 1981
1627#if EV_USE_SIGNALFD 1982#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 1983 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 1984 close (sigfd);
1634 }
1635#endif 1985#endif
1636 1986
1637#if EV_USE_INOTIFY 1987#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 1988 if (fs_fd >= 0)
1639 close (fs_fd); 1989 close (fs_fd);
1640#endif 1990#endif
1641 1991
1642 if (backend_fd >= 0) 1992 if (backend_fd >= 0)
1643 close (backend_fd); 1993 close (backend_fd);
1644 1994
1995#if EV_USE_IOCP
1996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1997#endif
1645#if EV_USE_PORT 1998#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 2000#endif
1648#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1676 array_free (periodic, EMPTY); 2029 array_free (periodic, EMPTY);
1677#endif 2030#endif
1678#if EV_FORK_ENABLE 2031#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 2032 array_free (fork, EMPTY);
1680#endif 2033#endif
2034#if EV_CLEANUP_ENABLE
2035 array_free (cleanup, EMPTY);
2036#endif
1681 array_free (prepare, EMPTY); 2037 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 2038 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 2039#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 2040 array_free (async, EMPTY);
1685#endif 2041#endif
1686 2042
1687 backend = 0; 2043 backend = 0;
2044
2045#if EV_MULTIPLICITY
2046 if (ev_is_default_loop (EV_A))
2047#endif
2048 ev_default_loop_ptr = 0;
2049#if EV_MULTIPLICITY
2050 else
2051 ev_free (EV_A);
2052#endif
1688} 2053}
1689 2054
1690#if EV_USE_INOTIFY 2055#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 2056inline_size void infy_fork (EV_P);
1692#endif 2057#endif
… …
1707 infy_fork (EV_A); 2072 infy_fork (EV_A);
1708#endif 2073#endif
1709 2074
1710 if (ev_is_active (&pipe_w)) 2075 if (ev_is_active (&pipe_w))
1711 { 2076 {
1712 /* this "locks" the handlers against writing to the pipe */ 2077 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 gotsig = 1;
1715#if EV_ASYNC_ENABLE
1716 gotasync = 1;
1717#endif
1718 2078
1719 ev_ref (EV_A); 2079 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 2080 ev_io_stop (EV_A_ &pipe_w);
1721 2081
1722#if EV_USE_EVENTFD 2082#if EV_USE_EVENTFD
… …
1724 close (evfd); 2084 close (evfd);
1725#endif 2085#endif
1726 2086
1727 if (evpipe [0] >= 0) 2087 if (evpipe [0] >= 0)
1728 { 2088 {
1729 close (evpipe [0]); 2089 EV_WIN32_CLOSE_FD (evpipe [0]);
1730 close (evpipe [1]); 2090 EV_WIN32_CLOSE_FD (evpipe [1]);
1731 } 2091 }
1732 2092
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1733 evpipe_init (EV_A); 2094 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 2095 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 2096 pipecb (EV_A_ &pipe_w, EV_READ);
2097#endif
1736 } 2098 }
1737 2099
1738 postfork = 0; 2100 postfork = 0;
1739} 2101}
1740 2102
1741#if EV_MULTIPLICITY 2103#if EV_MULTIPLICITY
1742 2104
1743struct ev_loop * 2105struct ev_loop * ecb_cold
1744ev_loop_new (unsigned int flags) 2106ev_loop_new (unsigned int flags)
1745{ 2107{
1746 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2108 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 2109
1748 memset (loop, 0, sizeof (struct ev_loop)); 2110 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 2111 loop_init (EV_A_ flags);
1750 2112
1751 if (ev_backend (EV_A)) 2113 if (ev_backend (EV_A))
1752 return loop; 2114 return EV_A;
1753 2115
2116 ev_free (EV_A);
1754 return 0; 2117 return 0;
1755} 2118}
1756 2119
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 2120#endif /* multiplicity */
1770 2121
1771#if EV_VERIFY 2122#if EV_VERIFY
1772static void noinline 2123static void noinline ecb_cold
1773verify_watcher (EV_P_ W w) 2124verify_watcher (EV_P_ W w)
1774{ 2125{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2126 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 2127
1777 if (w->pending) 2128 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2129 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 2130}
1780 2131
1781static void noinline 2132static void noinline ecb_cold
1782verify_heap (EV_P_ ANHE *heap, int N) 2133verify_heap (EV_P_ ANHE *heap, int N)
1783{ 2134{
1784 int i; 2135 int i;
1785 2136
1786 for (i = HEAP0; i < N + HEAP0; ++i) 2137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 2142
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 2144 }
1794} 2145}
1795 2146
1796static void noinline 2147static void noinline ecb_cold
1797array_verify (EV_P_ W *ws, int cnt) 2148array_verify (EV_P_ W *ws, int cnt)
1798{ 2149{
1799 while (cnt--) 2150 while (cnt--)
1800 { 2151 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2152 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 2153 verify_watcher (EV_A_ ws [cnt]);
1803 } 2154 }
1804} 2155}
1805#endif 2156#endif
1806 2157
1807#if EV_MINIMAL < 2 2158#if EV_FEATURE_API
1808void 2159void ecb_cold
1809ev_loop_verify (EV_P) 2160ev_verify (EV_P)
1810{ 2161{
1811#if EV_VERIFY 2162#if EV_VERIFY
1812 int i; 2163 int i;
1813 WL w; 2164 WL w;
1814 2165
… …
1848#if EV_FORK_ENABLE 2199#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 2200 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 2201 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 2202#endif
1852 2203
2204#if EV_CLEANUP_ENABLE
2205 assert (cleanupmax >= cleanupcnt);
2206 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2207#endif
2208
1853#if EV_ASYNC_ENABLE 2209#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 2210 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 2211 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 2212#endif
1857 2213
2214#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 2215 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 2216 array_verify (EV_A_ (W *)prepares, preparecnt);
2217#endif
1860 2218
2219#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 2220 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 2221 array_verify (EV_A_ (W *)checks, checkcnt);
2222#endif
1863 2223
1864# if 0 2224# if 0
2225#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2226 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2227 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2228#endif
1867# endif 2229# endif
1868#endif 2230#endif
1869} 2231}
1870#endif 2232#endif
1871 2233
1872#if EV_MULTIPLICITY 2234#if EV_MULTIPLICITY
1873struct ev_loop * 2235struct ev_loop * ecb_cold
1874ev_default_loop_init (unsigned int flags)
1875#else 2236#else
1876int 2237int
2238#endif
1877ev_default_loop (unsigned int flags) 2239ev_default_loop (unsigned int flags)
1878#endif
1879{ 2240{
1880 if (!ev_default_loop_ptr) 2241 if (!ev_default_loop_ptr)
1881 { 2242 {
1882#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
1883 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2244 EV_P = ev_default_loop_ptr = &default_loop_struct;
1884#else 2245#else
1885 ev_default_loop_ptr = 1; 2246 ev_default_loop_ptr = 1;
1886#endif 2247#endif
1887 2248
1888 loop_init (EV_A_ flags); 2249 loop_init (EV_A_ flags);
1889 2250
1890 if (ev_backend (EV_A)) 2251 if (ev_backend (EV_A))
1891 { 2252 {
1892#ifndef _WIN32 2253#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 2254 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 2255 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 2256 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2257 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 2258#endif
… …
1902 2263
1903 return ev_default_loop_ptr; 2264 return ev_default_loop_ptr;
1904} 2265}
1905 2266
1906void 2267void
1907ev_default_destroy (void) 2268ev_loop_fork (EV_P)
1908{ 2269{
1909#if EV_MULTIPLICITY
1910 struct ev_loop *loop = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 struct ev_loop *loop = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */ 2270 postfork = 1; /* must be in line with ev_default_fork */
1931} 2271}
1932 2272
1933/*****************************************************************************/ 2273/*****************************************************************************/
1934 2274
1935void 2275void
… …
1957 2297
1958 for (pri = NUMPRI; pri--; ) 2298 for (pri = NUMPRI; pri--; )
1959 while (pendingcnt [pri]) 2299 while (pendingcnt [pri])
1960 { 2300 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1962
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965 2302
1966 p->w->pending = 0; 2303 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 2304 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 2305 EV_FREQUENT_CHECK;
1969 } 2306 }
… …
2026 EV_FREQUENT_CHECK; 2363 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 2364 feed_reverse (EV_A_ (W)w);
2028 } 2365 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2366 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 2367
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 2368 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 2369 }
2033} 2370}
2034 2371
2035#if EV_PERIODIC_ENABLE 2372#if EV_PERIODIC_ENABLE
2373
2374static void noinline
2375periodic_recalc (EV_P_ ev_periodic *w)
2376{
2377 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2378 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2379
2380 /* the above almost always errs on the low side */
2381 while (at <= ev_rt_now)
2382 {
2383 ev_tstamp nat = at + w->interval;
2384
2385 /* when resolution fails us, we use ev_rt_now */
2386 if (expect_false (nat == at))
2387 {
2388 at = ev_rt_now;
2389 break;
2390 }
2391
2392 at = nat;
2393 }
2394
2395 ev_at (w) = at;
2396}
2397
2036/* make periodics pending */ 2398/* make periodics pending */
2037inline_size void 2399inline_size void
2038periodics_reify (EV_P) 2400periodics_reify (EV_P)
2039{ 2401{
2040 EV_FREQUENT_CHECK; 2402 EV_FREQUENT_CHECK;
… …
2059 ANHE_at_cache (periodics [HEAP0]); 2421 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 2422 downheap (periodics, periodiccnt, HEAP0);
2061 } 2423 }
2062 else if (w->interval) 2424 else if (w->interval)
2063 { 2425 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2426 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 2427 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 2428 downheap (periodics, periodiccnt, HEAP0);
2080 } 2429 }
2081 else 2430 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2431 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 2438 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 2439 }
2091} 2440}
2092 2441
2093/* simply recalculate all periodics */ 2442/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2443/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 2444static void noinline ecb_cold
2096periodics_reschedule (EV_P) 2445periodics_reschedule (EV_P)
2097{ 2446{
2098 int i; 2447 int i;
2099 2448
2100 /* adjust periodics after time jump */ 2449 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2452 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 2453
2105 if (w->reschedule_cb) 2454 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2455 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 2456 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2457 periodic_recalc (EV_A_ w);
2109 2458
2110 ANHE_at_cache (periodics [i]); 2459 ANHE_at_cache (periodics [i]);
2111 } 2460 }
2112 2461
2113 reheap (periodics, periodiccnt); 2462 reheap (periodics, periodiccnt);
2114} 2463}
2115#endif 2464#endif
2116 2465
2117/* adjust all timers by a given offset */ 2466/* adjust all timers by a given offset */
2118static void noinline 2467static void noinline ecb_cold
2119timers_reschedule (EV_P_ ev_tstamp adjust) 2468timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 2469{
2121 int i; 2470 int i;
2122 2471
2123 for (i = 0; i < timercnt; ++i) 2472 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 2476 ANHE_at_cache (*he);
2128 } 2477 }
2129} 2478}
2130 2479
2131/* fetch new monotonic and realtime times from the kernel */ 2480/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 2481/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 2482inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 2483time_update (EV_P_ ev_tstamp max_block)
2135{ 2484{
2136#if EV_USE_MONOTONIC 2485#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 2486 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 2509 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 2510 * in the unlikely event of having been preempted here.
2162 */ 2511 */
2163 for (i = 4; --i; ) 2512 for (i = 4; --i; )
2164 { 2513 {
2514 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 2515 rtmn_diff = ev_rt_now - mn_now;
2166 2516
2517 diff = odiff - rtmn_diff;
2518
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2519 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 2520 return; /* all is well */
2169 2521
2170 ev_rt_now = ev_time (); 2522 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 2523 mn_now = get_clock ();
2172 now_floor = mn_now; 2524 now_floor = mn_now;
… …
2195 mn_now = ev_rt_now; 2547 mn_now = ev_rt_now;
2196 } 2548 }
2197} 2549}
2198 2550
2199void 2551void
2200ev_loop (EV_P_ int flags) 2552ev_run (EV_P_ int flags)
2201{ 2553{
2202#if EV_MINIMAL < 2 2554#if EV_FEATURE_API
2203 ++loop_depth; 2555 ++loop_depth;
2204#endif 2556#endif
2205 2557
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2558 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 2559
2208 loop_done = EVUNLOOP_CANCEL; 2560 loop_done = EVBREAK_CANCEL;
2209 2561
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2562 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 2563
2212 do 2564 do
2213 { 2565 {
2214#if EV_VERIFY >= 2 2566#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 2567 ev_verify (EV_A);
2216#endif 2568#endif
2217 2569
2218#ifndef _WIN32 2570#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 2571 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 2572 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2584 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 2585 EV_INVOKE_PENDING;
2234 } 2586 }
2235#endif 2587#endif
2236 2588
2589#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 2590 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 2591 if (expect_false (preparecnt))
2239 { 2592 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2593 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 2594 EV_INVOKE_PENDING;
2242 } 2595 }
2596#endif
2243 2597
2244 if (expect_false (loop_done)) 2598 if (expect_false (loop_done))
2245 break; 2599 break;
2246 2600
2247 /* we might have forked, so reify kernel state if necessary */ 2601 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 2608 /* calculate blocking time */
2255 { 2609 {
2256 ev_tstamp waittime = 0.; 2610 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 2611 ev_tstamp sleeptime = 0.;
2258 2612
2613 /* remember old timestamp for io_blocktime calculation */
2614 ev_tstamp prev_mn_now = mn_now;
2615
2616 /* update time to cancel out callback processing overhead */
2617 time_update (EV_A_ 1e100);
2618
2619 /* from now on, we want a pipe-wake-up */
2620 pipe_write_wanted = 1;
2621
2622 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2623
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 2625 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 2626 waittime = MAX_BLOCKTIME;
2268 2627
2269 if (timercnt) 2628 if (timercnt)
2270 { 2629 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2630 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 2631 if (waittime > to) waittime = to;
2273 } 2632 }
2274 2633
2275#if EV_PERIODIC_ENABLE 2634#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 2635 if (periodiccnt)
2277 { 2636 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2637 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 2638 if (waittime > to) waittime = to;
2280 } 2639 }
2281#endif 2640#endif
2282 2641
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2642 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 2643 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 2644 waittime = timeout_blocktime;
2645
2646 /* at this point, we NEED to wait, so we have to ensure */
2647 /* to pass a minimum nonzero value to the backend */
2648 if (expect_false (waittime < backend_mintime))
2649 waittime = backend_mintime;
2286 2650
2287 /* extra check because io_blocktime is commonly 0 */ 2651 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 2652 if (expect_false (io_blocktime))
2289 { 2653 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2654 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 2655
2292 if (sleeptime > waittime - backend_fudge) 2656 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 2657 sleeptime = waittime - backend_mintime;
2294 2658
2295 if (expect_true (sleeptime > 0.)) 2659 if (expect_true (sleeptime > 0.))
2296 { 2660 {
2297 ev_sleep (sleeptime); 2661 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 2662 waittime -= sleeptime;
2299 } 2663 }
2300 } 2664 }
2301 } 2665 }
2302 2666
2303#if EV_MINIMAL < 2 2667#if EV_FEATURE_API
2304 ++loop_count; 2668 ++loop_count;
2305#endif 2669#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 2671 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2672 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2673
2674 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2675
2676 if (pipe_write_skipped)
2677 {
2678 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2679 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2680 }
2681
2309 2682
2310 /* update ev_rt_now, do magic */ 2683 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 2684 time_update (EV_A_ waittime + sleeptime);
2312 } 2685 }
2313 2686
… …
2320#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 2694 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 2695 idle_reify (EV_A);
2323#endif 2696#endif
2324 2697
2698#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 2699 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 2700 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2701 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2702#endif
2328 2703
2329 EV_INVOKE_PENDING; 2704 EV_INVOKE_PENDING;
2330 } 2705 }
2331 while (expect_true ( 2706 while (expect_true (
2332 activecnt 2707 activecnt
2333 && !loop_done 2708 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2709 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 2710 ));
2336 2711
2337 if (loop_done == EVUNLOOP_ONE) 2712 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 2713 loop_done = EVBREAK_CANCEL;
2339 2714
2340#if EV_MINIMAL < 2 2715#if EV_FEATURE_API
2341 --loop_depth; 2716 --loop_depth;
2342#endif 2717#endif
2343} 2718}
2344 2719
2345void 2720void
2346ev_unloop (EV_P_ int how) 2721ev_break (EV_P_ int how)
2347{ 2722{
2348 loop_done = how; 2723 loop_done = how;
2349} 2724}
2350 2725
2351void 2726void
… …
2398inline_size void 2773inline_size void
2399wlist_del (WL *head, WL elem) 2774wlist_del (WL *head, WL elem)
2400{ 2775{
2401 while (*head) 2776 while (*head)
2402 { 2777 {
2403 if (*head == elem) 2778 if (expect_true (*head == elem))
2404 { 2779 {
2405 *head = elem->next; 2780 *head = elem->next;
2406 return; 2781 break;
2407 } 2782 }
2408 2783
2409 head = &(*head)->next; 2784 head = &(*head)->next;
2410 } 2785 }
2411} 2786}
… …
2471 2846
2472 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2473 return; 2848 return;
2474 2849
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2850 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2851 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 2852
2478 EV_FREQUENT_CHECK; 2853 EV_FREQUENT_CHECK;
2479 2854
2480 ev_start (EV_A_ (W)w, 1); 2855 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2499 EV_FREQUENT_CHECK; 2874 EV_FREQUENT_CHECK;
2500 2875
2501 wlist_del (&anfds[w->fd].head, (WL)w); 2876 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 2877 ev_stop (EV_A_ (W)w);
2503 2878
2504 fd_change (EV_A_ w->fd, 1); 2879 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 2880
2506 EV_FREQUENT_CHECK; 2881 EV_FREQUENT_CHECK;
2507} 2882}
2508 2883
2509void noinline 2884void noinline
… …
2551 timers [active] = timers [timercnt + HEAP0]; 2926 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 2927 adjustheap (timers, timercnt, active);
2553 } 2928 }
2554 } 2929 }
2555 2930
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 2931 ev_at (w) -= mn_now;
2559 2932
2560 ev_stop (EV_A_ (W)w); 2933 ev_stop (EV_A_ (W)w);
2934
2935 EV_FREQUENT_CHECK;
2561} 2936}
2562 2937
2563void noinline 2938void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 2939ev_timer_again (EV_P_ ev_timer *w)
2565{ 2940{
… …
2601 if (w->reschedule_cb) 2976 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2977 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 2978 else if (w->interval)
2604 { 2979 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2980 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 2981 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 2982 }
2609 else 2983 else
2610 ev_at (w) = w->offset; 2984 ev_at (w) = w->offset;
2611 2985
2612 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 3018 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 3019 adjustheap (periodics, periodiccnt, active);
2646 } 3020 }
2647 } 3021 }
2648 3022
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 3023 ev_stop (EV_A_ (W)w);
3024
3025 EV_FREQUENT_CHECK;
2652} 3026}
2653 3027
2654void noinline 3028void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 3029ev_periodic_again (EV_P_ ev_periodic *w)
2656{ 3030{
… …
2662 3036
2663#ifndef SA_RESTART 3037#ifndef SA_RESTART
2664# define SA_RESTART 0 3038# define SA_RESTART 0
2665#endif 3039#endif
2666 3040
3041#if EV_SIGNAL_ENABLE
3042
2667void noinline 3043void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 3044ev_signal_start (EV_P_ ev_signal *w)
2669{ 3045{
2670#if EV_MULTIPLICITY
2671 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2672#endif
2673 if (expect_false (ev_is_active (w))) 3046 if (expect_false (ev_is_active (w)))
2674 return; 3047 return;
2675 3048
2676 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3049 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3050
3051#if EV_MULTIPLICITY
3052 assert (("libev: a signal must not be attached to two different loops",
3053 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3054
3055 signals [w->signum - 1].loop = EV_A;
3056#endif
2677 3057
2678 EV_FREQUENT_CHECK; 3058 EV_FREQUENT_CHECK;
2679 3059
2680#if EV_USE_SIGNALFD 3060#if EV_USE_SIGNALFD
2681 if (sigfd == -2) 3061 if (sigfd == -2)
… …
2703 sigaddset (&sigfd_set, w->signum); 3083 sigaddset (&sigfd_set, w->signum);
2704 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3084 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705 3085
2706 signalfd (sigfd, &sigfd_set, 0); 3086 signalfd (sigfd, &sigfd_set, 0);
2707 } 3087 }
2708 else
2709#endif
2710 evpipe_init (EV_A);
2711
2712 {
2713#ifndef _WIN32
2714 sigset_t full, prev;
2715 sigfillset (&full);
2716 sigprocmask (SIG_SETMASK, &full, &prev);
2717#endif
2718
2719 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2720
2721#ifndef _WIN32
2722# if EV_USE_SIGNALFD
2723 if (sigfd < 0)/*TODO*/
2724# endif 3088#endif
2725 sigdelset (&prev, w->signum);
2726 sigprocmask (SIG_SETMASK, &prev, 0);
2727#endif
2728 }
2729 3089
2730 ev_start (EV_A_ (W)w, 1); 3090 ev_start (EV_A_ (W)w, 1);
2731 wlist_add (&signals [w->signum - 1].head, (WL)w); 3091 wlist_add (&signals [w->signum - 1].head, (WL)w);
2732 3092
2733 if (!((WL)w)->next) 3093 if (!((WL)w)->next)
2734 {
2735#if _WIN32
2736 signal (w->signum, ev_sighandler);
2737#else
2738# if EV_USE_SIGNALFD 3094# if EV_USE_SIGNALFD
2739 if (sigfd < 0) /*TODO*/ 3095 if (sigfd < 0) /*TODO*/
2740# endif 3096# endif
2741 { 3097 {
3098# ifdef _WIN32
3099 evpipe_init (EV_A);
3100
3101 signal (w->signum, ev_sighandler);
3102# else
2742 struct sigaction sa = { }; 3103 struct sigaction sa;
3104
3105 evpipe_init (EV_A);
3106
2743 sa.sa_handler = ev_sighandler; 3107 sa.sa_handler = ev_sighandler;
2744 sigfillset (&sa.sa_mask); 3108 sigfillset (&sa.sa_mask);
2745 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2746 sigaction (w->signum, &sa, 0); 3110 sigaction (w->signum, &sa, 0);
3111
3112 if (origflags & EVFLAG_NOSIGMASK)
3113 {
3114 sigemptyset (&sa.sa_mask);
3115 sigaddset (&sa.sa_mask, w->signum);
3116 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2747 } 3117 }
2748#endif 3118#endif
2749 } 3119 }
2750 3120
2751 EV_FREQUENT_CHECK; 3121 EV_FREQUENT_CHECK;
2752} 3122}
2753 3123
2754void noinline 3124void noinline
… …
2762 3132
2763 wlist_del (&signals [w->signum - 1].head, (WL)w); 3133 wlist_del (&signals [w->signum - 1].head, (WL)w);
2764 ev_stop (EV_A_ (W)w); 3134 ev_stop (EV_A_ (W)w);
2765 3135
2766 if (!signals [w->signum - 1].head) 3136 if (!signals [w->signum - 1].head)
3137 {
3138#if EV_MULTIPLICITY
3139 signals [w->signum - 1].loop = 0; /* unattach from signal */
3140#endif
2767#if EV_USE_SIGNALFD 3141#if EV_USE_SIGNALFD
2768 if (sigfd >= 0) 3142 if (sigfd >= 0)
2769 { 3143 {
2770 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3144 sigset_t ss;
3145
3146 sigemptyset (&ss);
3147 sigaddset (&ss, w->signum);
2771 sigdelset (&sigfd_set, w->signum); 3148 sigdelset (&sigfd_set, w->signum);
3149
2772 signalfd (sigfd, &sigfd_set, 0); 3150 signalfd (sigfd, &sigfd_set, 0);
2773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3151 sigprocmask (SIG_UNBLOCK, &ss, 0);
2774 /*TODO: maybe unblock signal? */
2775 } 3152 }
2776 else 3153 else
2777#endif 3154#endif
2778 signal (w->signum, SIG_DFL); 3155 signal (w->signum, SIG_DFL);
3156 }
2779 3157
2780 EV_FREQUENT_CHECK; 3158 EV_FREQUENT_CHECK;
2781} 3159}
3160
3161#endif
3162
3163#if EV_CHILD_ENABLE
2782 3164
2783void 3165void
2784ev_child_start (EV_P_ ev_child *w) 3166ev_child_start (EV_P_ ev_child *w)
2785{ 3167{
2786#if EV_MULTIPLICITY 3168#if EV_MULTIPLICITY
… …
2790 return; 3172 return;
2791 3173
2792 EV_FREQUENT_CHECK; 3174 EV_FREQUENT_CHECK;
2793 3175
2794 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
2795 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3177 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2796 3178
2797 EV_FREQUENT_CHECK; 3179 EV_FREQUENT_CHECK;
2798} 3180}
2799 3181
2800void 3182void
… …
2804 if (expect_false (!ev_is_active (w))) 3186 if (expect_false (!ev_is_active (w)))
2805 return; 3187 return;
2806 3188
2807 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2808 3190
2809 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3191 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2810 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
2811 3193
2812 EV_FREQUENT_CHECK; 3194 EV_FREQUENT_CHECK;
2813} 3195}
3196
3197#endif
2814 3198
2815#if EV_STAT_ENABLE 3199#if EV_STAT_ENABLE
2816 3200
2817# ifdef _WIN32 3201# ifdef _WIN32
2818# undef lstat 3202# undef lstat
… …
2824#define MIN_STAT_INTERVAL 0.1074891 3208#define MIN_STAT_INTERVAL 0.1074891
2825 3209
2826static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3210static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2827 3211
2828#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2829# define EV_INOTIFY_BUFSIZE 8192 3213
3214/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3215# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2830 3216
2831static void noinline 3217static void noinline
2832infy_add (EV_P_ ev_stat *w) 3218infy_add (EV_P_ ev_stat *w)
2833{ 3219{
2834 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); 3220 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);
2835 3221
2836 if (w->wd < 0) 3222 if (w->wd >= 0)
3223 {
3224 struct statfs sfs;
3225
3226 /* now local changes will be tracked by inotify, but remote changes won't */
3227 /* unless the filesystem is known to be local, we therefore still poll */
3228 /* also do poll on <2.6.25, but with normal frequency */
3229
3230 if (!fs_2625)
3231 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3232 else if (!statfs (w->path, &sfs)
3233 && (sfs.f_type == 0x1373 /* devfs */
3234 || sfs.f_type == 0xEF53 /* ext2/3 */
3235 || sfs.f_type == 0x3153464a /* jfs */
3236 || sfs.f_type == 0x52654973 /* reiser3 */
3237 || sfs.f_type == 0x01021994 /* tempfs */
3238 || sfs.f_type == 0x58465342 /* xfs */))
3239 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3240 else
3241 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2837 { 3242 }
3243 else
3244 {
3245 /* can't use inotify, continue to stat */
2838 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3246 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2839 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2840 3247
2841 /* monitor some parent directory for speedup hints */ 3248 /* if path is not there, monitor some parent directory for speedup hints */
2842 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3249 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2843 /* but an efficiency issue only */ 3250 /* but an efficiency issue only */
2844 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3251 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2845 { 3252 {
2846 char path [4096]; 3253 char path [4096];
… …
2856 if (!pend || pend == path) 3263 if (!pend || pend == path)
2857 break; 3264 break;
2858 3265
2859 *pend = 0; 3266 *pend = 0;
2860 w->wd = inotify_add_watch (fs_fd, path, mask); 3267 w->wd = inotify_add_watch (fs_fd, path, mask);
2861 } 3268 }
2862 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3269 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2863 } 3270 }
2864 } 3271 }
2865 3272
2866 if (w->wd >= 0) 3273 if (w->wd >= 0)
2867 {
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3274 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869 3275
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 3276 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 3277 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873 struct statfs sfs;
2874
2875 if (fs_2625 && !statfs (w->path, &sfs))
2876 if (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)
2882 return;
2883
2884 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885 ev_timer_again (EV_A_ &w->timer); 3278 ev_timer_again (EV_A_ &w->timer);
2886 } 3279 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887} 3280}
2888 3281
2889static void noinline 3282static void noinline
2890infy_del (EV_P_ ev_stat *w) 3283infy_del (EV_P_ ev_stat *w)
2891{ 3284{
… …
2894 3287
2895 if (wd < 0) 3288 if (wd < 0)
2896 return; 3289 return;
2897 3290
2898 w->wd = -2; 3291 w->wd = -2;
2899 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3292 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2900 wlist_del (&fs_hash [slot].head, (WL)w); 3293 wlist_del (&fs_hash [slot].head, (WL)w);
2901 3294
2902 /* remove this watcher, if others are watching it, they will rearm */ 3295 /* remove this watcher, if others are watching it, they will rearm */
2903 inotify_rm_watch (fs_fd, wd); 3296 inotify_rm_watch (fs_fd, wd);
2904} 3297}
… …
2906static void noinline 3299static void noinline
2907infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2908{ 3301{
2909 if (slot < 0) 3302 if (slot < 0)
2910 /* overflow, need to check for all hash slots */ 3303 /* overflow, need to check for all hash slots */
2911 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3304 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2912 infy_wd (EV_A_ slot, wd, ev); 3305 infy_wd (EV_A_ slot, wd, ev);
2913 else 3306 else
2914 { 3307 {
2915 WL w_; 3308 WL w_;
2916 3309
2917 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3310 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2918 { 3311 {
2919 ev_stat *w = (ev_stat *)w_; 3312 ev_stat *w = (ev_stat *)w_;
2920 w_ = w_->next; /* lets us remove this watcher and all before it */ 3313 w_ = w_->next; /* lets us remove this watcher and all before it */
2921 3314
2922 if (w->wd == wd || wd == -1) 3315 if (w->wd == wd || wd == -1)
2923 { 3316 {
2924 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2925 { 3318 {
2926 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3319 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2927 w->wd = -1; 3320 w->wd = -1;
2928 infy_add (EV_A_ w); /* re-add, no matter what */ 3321 infy_add (EV_A_ w); /* re-add, no matter what */
2929 } 3322 }
2930 3323
2931 stat_timer_cb (EV_A_ &w->timer, 0); 3324 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2936 3329
2937static void 3330static void
2938infy_cb (EV_P_ ev_io *w, int revents) 3331infy_cb (EV_P_ ev_io *w, int revents)
2939{ 3332{
2940 char buf [EV_INOTIFY_BUFSIZE]; 3333 char buf [EV_INOTIFY_BUFSIZE];
2941 struct inotify_event *ev = (struct inotify_event *)buf;
2942 int ofs; 3334 int ofs;
2943 int len = read (fs_fd, buf, sizeof (buf)); 3335 int len = read (fs_fd, buf, sizeof (buf));
2944 3336
2945 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3337 for (ofs = 0; ofs < len; )
3338 {
3339 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2946 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3340 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3341 ofs += sizeof (struct inotify_event) + ev->len;
3342 }
2947} 3343}
2948 3344
2949inline_size void 3345inline_size void ecb_cold
2950check_2625 (EV_P) 3346ev_check_2625 (EV_P)
2951{ 3347{
2952 /* kernels < 2.6.25 are borked 3348 /* kernels < 2.6.25 are borked
2953 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3349 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2954 */ 3350 */
2955 struct utsname buf; 3351 if (ev_linux_version () < 0x020619)
2956 int major, minor, micro;
2957
2958 if (uname (&buf))
2959 return; 3352 return;
2960 3353
2961 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2962 return;
2963
2964 if (major < 2
2965 || (major == 2 && minor < 6)
2966 || (major == 2 && minor == 6 && micro < 25))
2967 return;
2968
2969 fs_2625 = 1; 3354 fs_2625 = 1;
3355}
3356
3357inline_size int
3358infy_newfd (void)
3359{
3360#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3361 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3362 if (fd >= 0)
3363 return fd;
3364#endif
3365 return inotify_init ();
2970} 3366}
2971 3367
2972inline_size void 3368inline_size void
2973infy_init (EV_P) 3369infy_init (EV_P)
2974{ 3370{
2975 if (fs_fd != -2) 3371 if (fs_fd != -2)
2976 return; 3372 return;
2977 3373
2978 fs_fd = -1; 3374 fs_fd = -1;
2979 3375
2980 check_2625 (EV_A); 3376 ev_check_2625 (EV_A);
2981 3377
2982 fs_fd = inotify_init (); 3378 fs_fd = infy_newfd ();
2983 3379
2984 if (fs_fd >= 0) 3380 if (fs_fd >= 0)
2985 { 3381 {
3382 fd_intern (fs_fd);
2986 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3383 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987 ev_set_priority (&fs_w, EV_MAXPRI); 3384 ev_set_priority (&fs_w, EV_MAXPRI);
2988 ev_io_start (EV_A_ &fs_w); 3385 ev_io_start (EV_A_ &fs_w);
3386 ev_unref (EV_A);
2989 } 3387 }
2990} 3388}
2991 3389
2992inline_size void 3390inline_size void
2993infy_fork (EV_P) 3391infy_fork (EV_P)
… …
2995 int slot; 3393 int slot;
2996 3394
2997 if (fs_fd < 0) 3395 if (fs_fd < 0)
2998 return; 3396 return;
2999 3397
3398 ev_ref (EV_A);
3399 ev_io_stop (EV_A_ &fs_w);
3000 close (fs_fd); 3400 close (fs_fd);
3001 fs_fd = inotify_init (); 3401 fs_fd = infy_newfd ();
3002 3402
3403 if (fs_fd >= 0)
3404 {
3405 fd_intern (fs_fd);
3406 ev_io_set (&fs_w, fs_fd, EV_READ);
3407 ev_io_start (EV_A_ &fs_w);
3408 ev_unref (EV_A);
3409 }
3410
3003 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3004 { 3412 {
3005 WL w_ = fs_hash [slot].head; 3413 WL w_ = fs_hash [slot].head;
3006 fs_hash [slot].head = 0; 3414 fs_hash [slot].head = 0;
3007 3415
3008 while (w_) 3416 while (w_)
… …
3013 w->wd = -1; 3421 w->wd = -1;
3014 3422
3015 if (fs_fd >= 0) 3423 if (fs_fd >= 0)
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 3424 infy_add (EV_A_ w); /* re-add, no matter what */
3017 else 3425 else
3426 {
3427 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3428 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3018 ev_timer_again (EV_A_ &w->timer); 3429 ev_timer_again (EV_A_ &w->timer);
3430 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3431 }
3019 } 3432 }
3020 } 3433 }
3021} 3434}
3022 3435
3023#endif 3436#endif
… …
3040static void noinline 3453static void noinline
3041stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3454stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042{ 3455{
3043 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3456 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3044 3457
3045 /* we copy this here each the time so that */ 3458 ev_statdata prev = w->attr;
3046 /* prev has the old value when the callback gets invoked */
3047 w->prev = w->attr;
3048 ev_stat_stat (EV_A_ w); 3459 ev_stat_stat (EV_A_ w);
3049 3460
3050 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3461 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3051 if ( 3462 if (
3052 w->prev.st_dev != w->attr.st_dev 3463 prev.st_dev != w->attr.st_dev
3053 || w->prev.st_ino != w->attr.st_ino 3464 || prev.st_ino != w->attr.st_ino
3054 || w->prev.st_mode != w->attr.st_mode 3465 || prev.st_mode != w->attr.st_mode
3055 || w->prev.st_nlink != w->attr.st_nlink 3466 || prev.st_nlink != w->attr.st_nlink
3056 || w->prev.st_uid != w->attr.st_uid 3467 || prev.st_uid != w->attr.st_uid
3057 || w->prev.st_gid != w->attr.st_gid 3468 || prev.st_gid != w->attr.st_gid
3058 || w->prev.st_rdev != w->attr.st_rdev 3469 || prev.st_rdev != w->attr.st_rdev
3059 || w->prev.st_size != w->attr.st_size 3470 || prev.st_size != w->attr.st_size
3060 || w->prev.st_atime != w->attr.st_atime 3471 || prev.st_atime != w->attr.st_atime
3061 || w->prev.st_mtime != w->attr.st_mtime 3472 || prev.st_mtime != w->attr.st_mtime
3062 || w->prev.st_ctime != w->attr.st_ctime 3473 || prev.st_ctime != w->attr.st_ctime
3063 ) { 3474 ) {
3475 /* we only update w->prev on actual differences */
3476 /* in case we test more often than invoke the callback, */
3477 /* to ensure that prev is always different to attr */
3478 w->prev = prev;
3479
3064 #if EV_USE_INOTIFY 3480 #if EV_USE_INOTIFY
3065 if (fs_fd >= 0) 3481 if (fs_fd >= 0)
3066 { 3482 {
3067 infy_del (EV_A_ w); 3483 infy_del (EV_A_ w);
3068 infy_add (EV_A_ w); 3484 infy_add (EV_A_ w);
… …
3093 3509
3094 if (fs_fd >= 0) 3510 if (fs_fd >= 0)
3095 infy_add (EV_A_ w); 3511 infy_add (EV_A_ w);
3096 else 3512 else
3097#endif 3513#endif
3514 {
3098 ev_timer_again (EV_A_ &w->timer); 3515 ev_timer_again (EV_A_ &w->timer);
3516 ev_unref (EV_A);
3517 }
3099 3518
3100 ev_start (EV_A_ (W)w, 1); 3519 ev_start (EV_A_ (W)w, 1);
3101 3520
3102 EV_FREQUENT_CHECK; 3521 EV_FREQUENT_CHECK;
3103} 3522}
… …
3112 EV_FREQUENT_CHECK; 3531 EV_FREQUENT_CHECK;
3113 3532
3114#if EV_USE_INOTIFY 3533#if EV_USE_INOTIFY
3115 infy_del (EV_A_ w); 3534 infy_del (EV_A_ w);
3116#endif 3535#endif
3536
3537 if (ev_is_active (&w->timer))
3538 {
3539 ev_ref (EV_A);
3117 ev_timer_stop (EV_A_ &w->timer); 3540 ev_timer_stop (EV_A_ &w->timer);
3541 }
3118 3542
3119 ev_stop (EV_A_ (W)w); 3543 ev_stop (EV_A_ (W)w);
3120 3544
3121 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
3122} 3546}
… …
3167 3591
3168 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
3169} 3593}
3170#endif 3594#endif
3171 3595
3596#if EV_PREPARE_ENABLE
3172void 3597void
3173ev_prepare_start (EV_P_ ev_prepare *w) 3598ev_prepare_start (EV_P_ ev_prepare *w)
3174{ 3599{
3175 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
3176 return; 3601 return;
… …
3202 3627
3203 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
3204 3629
3205 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
3206} 3631}
3632#endif
3207 3633
3634#if EV_CHECK_ENABLE
3208void 3635void
3209ev_check_start (EV_P_ ev_check *w) 3636ev_check_start (EV_P_ ev_check *w)
3210{ 3637{
3211 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
3212 return; 3639 return;
… …
3238 3665
3239 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
3240 3667
3241 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
3242} 3669}
3670#endif
3243 3671
3244#if EV_EMBED_ENABLE 3672#if EV_EMBED_ENABLE
3245void noinline 3673void noinline
3246ev_embed_sweep (EV_P_ ev_embed *w) 3674ev_embed_sweep (EV_P_ ev_embed *w)
3247{ 3675{
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 3676 ev_run (w->other, EVRUN_NOWAIT);
3249} 3677}
3250 3678
3251static void 3679static void
3252embed_io_cb (EV_P_ ev_io *io, int revents) 3680embed_io_cb (EV_P_ ev_io *io, int revents)
3253{ 3681{
3254 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3682 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3255 3683
3256 if (ev_cb (w)) 3684 if (ev_cb (w))
3257 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3685 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3258 else 3686 else
3259 ev_loop (w->other, EVLOOP_NONBLOCK); 3687 ev_run (w->other, EVRUN_NOWAIT);
3260} 3688}
3261 3689
3262static void 3690static void
3263embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3691embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264{ 3692{
3265 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3693 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3266 3694
3267 { 3695 {
3268 struct ev_loop *loop = w->other; 3696 EV_P = w->other;
3269 3697
3270 while (fdchangecnt) 3698 while (fdchangecnt)
3271 { 3699 {
3272 fd_reify (EV_A); 3700 fd_reify (EV_A);
3273 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3701 ev_run (EV_A_ EVRUN_NOWAIT);
3274 } 3702 }
3275 } 3703 }
3276} 3704}
3277 3705
3278static void 3706static void
… …
3281 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3709 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3282 3710
3283 ev_embed_stop (EV_A_ w); 3711 ev_embed_stop (EV_A_ w);
3284 3712
3285 { 3713 {
3286 struct ev_loop *loop = w->other; 3714 EV_P = w->other;
3287 3715
3288 ev_loop_fork (EV_A); 3716 ev_loop_fork (EV_A);
3289 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3717 ev_run (EV_A_ EVRUN_NOWAIT);
3290 } 3718 }
3291 3719
3292 ev_embed_start (EV_A_ w); 3720 ev_embed_start (EV_A_ w);
3293} 3721}
3294 3722
… …
3305{ 3733{
3306 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
3307 return; 3735 return;
3308 3736
3309 { 3737 {
3310 struct ev_loop *loop = w->other; 3738 EV_P = w->other;
3311 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3739 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3312 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3740 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313 } 3741 }
3314 3742
3315 EV_FREQUENT_CHECK; 3743 EV_FREQUENT_CHECK;
… …
3342 3770
3343 ev_io_stop (EV_A_ &w->io); 3771 ev_io_stop (EV_A_ &w->io);
3344 ev_prepare_stop (EV_A_ &w->prepare); 3772 ev_prepare_stop (EV_A_ &w->prepare);
3345 ev_fork_stop (EV_A_ &w->fork); 3773 ev_fork_stop (EV_A_ &w->fork);
3346 3774
3775 ev_stop (EV_A_ (W)w);
3776
3347 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
3348} 3778}
3349#endif 3779#endif
3350 3780
3351#if EV_FORK_ENABLE 3781#if EV_FORK_ENABLE
… …
3384 3814
3385 EV_FREQUENT_CHECK; 3815 EV_FREQUENT_CHECK;
3386} 3816}
3387#endif 3817#endif
3388 3818
3819#if EV_CLEANUP_ENABLE
3820void
3821ev_cleanup_start (EV_P_ ev_cleanup *w)
3822{
3823 if (expect_false (ev_is_active (w)))
3824 return;
3825
3826 EV_FREQUENT_CHECK;
3827
3828 ev_start (EV_A_ (W)w, ++cleanupcnt);
3829 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3830 cleanups [cleanupcnt - 1] = w;
3831
3832 /* cleanup watchers should never keep a refcount on the loop */
3833 ev_unref (EV_A);
3834 EV_FREQUENT_CHECK;
3835}
3836
3837void
3838ev_cleanup_stop (EV_P_ ev_cleanup *w)
3839{
3840 clear_pending (EV_A_ (W)w);
3841 if (expect_false (!ev_is_active (w)))
3842 return;
3843
3844 EV_FREQUENT_CHECK;
3845 ev_ref (EV_A);
3846
3847 {
3848 int active = ev_active (w);
3849
3850 cleanups [active - 1] = cleanups [--cleanupcnt];
3851 ev_active (cleanups [active - 1]) = active;
3852 }
3853
3854 ev_stop (EV_A_ (W)w);
3855
3856 EV_FREQUENT_CHECK;
3857}
3858#endif
3859
3389#if EV_ASYNC_ENABLE 3860#if EV_ASYNC_ENABLE
3390void 3861void
3391ev_async_start (EV_P_ ev_async *w) 3862ev_async_start (EV_P_ ev_async *w)
3392{ 3863{
3393 if (expect_false (ev_is_active (w))) 3864 if (expect_false (ev_is_active (w)))
3394 return; 3865 return;
3395 3866
3867 w->sent = 0;
3868
3396 evpipe_init (EV_A); 3869 evpipe_init (EV_A);
3397 3870
3398 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
3399 3872
3400 ev_start (EV_A_ (W)w, ++asynccnt); 3873 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3427 3900
3428void 3901void
3429ev_async_send (EV_P_ ev_async *w) 3902ev_async_send (EV_P_ ev_async *w)
3430{ 3903{
3431 w->sent = 1; 3904 w->sent = 1;
3432 evpipe_write (EV_A_ &gotasync); 3905 evpipe_write (EV_A_ &async_pending);
3433} 3906}
3434#endif 3907#endif
3435 3908
3436/*****************************************************************************/ 3909/*****************************************************************************/
3437 3910
… …
3477{ 3950{
3478 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3951 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3479 3952
3480 if (expect_false (!once)) 3953 if (expect_false (!once))
3481 { 3954 {
3482 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3955 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3483 return; 3956 return;
3484 } 3957 }
3485 3958
3486 once->cb = cb; 3959 once->cb = cb;
3487 once->arg = arg; 3960 once->arg = arg;
… …
3502} 3975}
3503 3976
3504/*****************************************************************************/ 3977/*****************************************************************************/
3505 3978
3506#if EV_WALK_ENABLE 3979#if EV_WALK_ENABLE
3507void 3980void ecb_cold
3508ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3981ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3509{ 3982{
3510 int i, j; 3983 int i, j;
3511 ev_watcher_list *wl, *wn; 3984 ev_watcher_list *wl, *wn;
3512 3985
… …
3574 if (types & EV_ASYNC) 4047 if (types & EV_ASYNC)
3575 for (i = asynccnt; i--; ) 4048 for (i = asynccnt; i--; )
3576 cb (EV_A_ EV_ASYNC, asyncs [i]); 4049 cb (EV_A_ EV_ASYNC, asyncs [i]);
3577#endif 4050#endif
3578 4051
4052#if EV_PREPARE_ENABLE
3579 if (types & EV_PREPARE) 4053 if (types & EV_PREPARE)
3580 for (i = preparecnt; i--; ) 4054 for (i = preparecnt; i--; )
3581#if EV_EMBED_ENABLE 4055# if EV_EMBED_ENABLE
3582 if (ev_cb (prepares [i]) != embed_prepare_cb) 4056 if (ev_cb (prepares [i]) != embed_prepare_cb)
3583#endif 4057# endif
3584 cb (EV_A_ EV_PREPARE, prepares [i]); 4058 cb (EV_A_ EV_PREPARE, prepares [i]);
4059#endif
3585 4060
4061#if EV_CHECK_ENABLE
3586 if (types & EV_CHECK) 4062 if (types & EV_CHECK)
3587 for (i = checkcnt; i--; ) 4063 for (i = checkcnt; i--; )
3588 cb (EV_A_ EV_CHECK, checks [i]); 4064 cb (EV_A_ EV_CHECK, checks [i]);
4065#endif
3589 4066
4067#if EV_SIGNAL_ENABLE
3590 if (types & EV_SIGNAL) 4068 if (types & EV_SIGNAL)
3591 for (i = 0; i < signalmax; ++i) 4069 for (i = 0; i < EV_NSIG - 1; ++i)
3592 for (wl = signals [i].head; wl; ) 4070 for (wl = signals [i].head; wl; )
3593 { 4071 {
3594 wn = wl->next; 4072 wn = wl->next;
3595 cb (EV_A_ EV_SIGNAL, wl); 4073 cb (EV_A_ EV_SIGNAL, wl);
3596 wl = wn; 4074 wl = wn;
3597 } 4075 }
4076#endif
3598 4077
4078#if EV_CHILD_ENABLE
3599 if (types & EV_CHILD) 4079 if (types & EV_CHILD)
3600 for (i = EV_PID_HASHSIZE; i--; ) 4080 for (i = (EV_PID_HASHSIZE); i--; )
3601 for (wl = childs [i]; wl; ) 4081 for (wl = childs [i]; wl; )
3602 { 4082 {
3603 wn = wl->next; 4083 wn = wl->next;
3604 cb (EV_A_ EV_CHILD, wl); 4084 cb (EV_A_ EV_CHILD, wl);
3605 wl = wn; 4085 wl = wn;
3606 } 4086 }
4087#endif
3607/* EV_STAT 0x00001000 /* stat data changed */ 4088/* EV_STAT 0x00001000 /* stat data changed */
3608/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4089/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3609} 4090}
3610#endif 4091#endif
3611 4092
3612#if EV_MULTIPLICITY 4093#if EV_MULTIPLICITY
3613 #include "ev_wrap.h" 4094 #include "ev_wrap.h"
3614#endif 4095#endif
3615 4096
3616#ifdef __cplusplus 4097EV_CPP(})
3617}
3618#endif
3619 4098

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