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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.383 by root, Wed Jul 20 00:40:14 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
166#endif 186#endif
187
188EV_CPP(extern "C" {)
167 189
168#ifndef _WIN32 190#ifndef _WIN32
169# include <sys/time.h> 191# include <sys/time.h>
170# include <sys/wait.h> 192# include <sys/wait.h>
171# include <unistd.h> 193# include <unistd.h>
… …
174# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 197# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
178# endif 200# endif
201# undef EV_AVOID_STDIO
179#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
180 211
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
182 245
183#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 249# else
187# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
188# endif 251# endif
189#endif 252#endif
190 253
191#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 257# else
195# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
196# endif 259# endif
197#endif 260#endif
198 261
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 264#endif
202 265
203#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 269# else
207# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
208# endif 271# endif
209#endif 272#endif
210 273
211#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 276#endif
214 277
215#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
216# ifdef _WIN32 279# ifdef _WIN32
217# define EV_USE_POLL 0 280# define EV_USE_POLL 0
218# else 281# else
219# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 283# endif
221#endif 284#endif
222 285
223#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 289# else
227# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
228# endif 291# endif
229#endif 292#endif
230 293
… …
236# define EV_USE_PORT 0 299# define EV_USE_PORT 0
237#endif 300#endif
238 301
239#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 305# else
243# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
244# endif 307# endif
245#endif 308#endif
246 309
247#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 312#endif
254 313
255#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 316#endif
262 317
263#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 321# else
267# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
268# endif 331# endif
269#endif 332#endif
270 333
271#if 0 /* debugging */ 334#if 0 /* debugging */
272# define EV_VERIFY 3 335# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
275#endif 338#endif
276 339
277#ifndef EV_VERIFY 340#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 342#endif
280 343
281#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 346#endif
284 347
285#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 350#endif
288 351
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
300# endif 363# endif
301#endif 364#endif
302 365
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
305#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
308#endif 377#endif
309 378
… …
316# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
318#endif 387#endif
319 388
320#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 392# include <sys/select.h>
323# endif 393# endif
324#endif 394#endif
325 395
326#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 397# include <sys/statfs.h>
329# include <sys/inotify.h> 398# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
339#endif 408#endif
340 409
341#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 412# include <stdint.h>
344# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
345extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
346# endif 415# endif
347int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 417# ifdef O_CLOEXEC
349} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
350# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
351#endif 446#endif
352 447
353/**/ 448/**/
354 449
355#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 452#else
358# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
359#endif 454#endif
360 455
361/* 456/*
362 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 459 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 462
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 465
375#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)
376# 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)
377# 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
378#else 493#else
379# define expect(expr,value) (expr) 494 #define ecb_inline static
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# 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
384#endif 508 #endif
509#endif
385 510
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
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) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1)
537 #define ecb_attribute(attrlist) __attribute__(attrlist)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality)
546#endif
547
548#define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__))
550#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__))
553
554#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__))
558#else
559 #define ecb_artificial
560 #define ecb_hot
561 #define ecb_cold
562#endif
563
564/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */
570
571#define expect_false(cond) ecb_expect_false (cond)
572#define expect_true(cond) ecb_expect_true (cond)
573#define noinline ecb_noinline
574
388#define inline_size static inline 575#define inline_size ecb_inline
389 576
390#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
391# define inline_speed static noinline 580# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 581#endif
395 582
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 584
398#if EV_MINPRI == EV_MAXPRI 585#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 598#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 599#define ev_at(w) ((WT)(w))->at
413 600
414#if EV_USE_REALTIME 601#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 602/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 603/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 604static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 605#endif
419 606
420#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 608static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 609#endif
423 610
611#ifndef EV_FD_TO_WIN32_HANDLE
612# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
613#endif
614#ifndef EV_WIN32_HANDLE_TO_FD
615# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
616#endif
617#ifndef EV_WIN32_CLOSE_FD
618# define EV_WIN32_CLOSE_FD(fd) close (fd)
619#endif
620
424#ifdef _WIN32 621#ifdef _WIN32
425# include "ev_win32.c" 622# include "ev_win32.c"
426#endif 623#endif
427 624
428/*****************************************************************************/ 625/*****************************************************************************/
429 626
627/* define a suitable floor function (only used by periodics atm) */
628
629#if EV_USE_FLOOR
630# include <math.h>
631# define ev_floor(v) floor (v)
632#else
633
634#include <float.h>
635
636/* a floor() replacement function, should be independent of ev_tstamp type */
637static ev_tstamp noinline
638ev_floor (ev_tstamp v)
639{
640 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif
646
647 /* argument too large for an unsigned long? */
648 if (expect_false (v >= shift))
649 {
650 ev_tstamp f;
651
652 if (v == v - 1.)
653 return v; /* very large number */
654
655 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f);
657 }
658
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */
668 return (unsigned long)v;
669}
670
671#endif
672
673/*****************************************************************************/
674
675#ifdef __linux
676# include <sys/utsname.h>
677#endif
678
679static unsigned int noinline ecb_cold
680ev_linux_version (void)
681{
682#ifdef __linux
683 unsigned int v = 0;
684 struct utsname buf;
685 int i;
686 char *p = buf.release;
687
688 if (uname (&buf))
689 return 0;
690
691 for (i = 3+1; --i; )
692 {
693 unsigned int c = 0;
694
695 for (;;)
696 {
697 if (*p >= '0' && *p <= '9')
698 c = c * 10 + *p++ - '0';
699 else
700 {
701 p += *p == '.';
702 break;
703 }
704 }
705
706 v = (v << 8) | c;
707 }
708
709 return v;
710#else
711 return 0;
712#endif
713}
714
715/*****************************************************************************/
716
717#if EV_AVOID_STDIO
718static void noinline ecb_cold
719ev_printerr (const char *msg)
720{
721 write (STDERR_FILENO, msg, strlen (msg));
722}
723#endif
724
430static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
431 726
432void 727void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 729{
435 syserr_cb = cb; 730 syserr_cb = cb;
436} 731}
437 732
438static void noinline 733static void noinline ecb_cold
439ev_syserr (const char *msg) 734ev_syserr (const char *msg)
440{ 735{
441 if (!msg) 736 if (!msg)
442 msg = "(libev) system error"; 737 msg = "(libev) system error";
443 738
444 if (syserr_cb) 739 if (syserr_cb)
445 syserr_cb (msg); 740 syserr_cb (msg);
446 else 741 else
447 { 742 {
743#if EV_AVOID_STDIO
744 ev_printerr (msg);
745 ev_printerr (": ");
746 ev_printerr (strerror (errno));
747 ev_printerr ("\n");
748#else
448 perror (msg); 749 perror (msg);
750#endif
449 abort (); 751 abort ();
450 } 752 }
451} 753}
452 754
453static void * 755static void *
454ev_realloc_emul (void *ptr, long size) 756ev_realloc_emul (void *ptr, long size)
455{ 757{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
456 /* some systems, notably openbsd and darwin, fail to properly 761 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 762 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 763 * the single unix specification, so work around them here.
459 */ 764 */
460 765
461 if (size) 766 if (size)
462 return realloc (ptr, size); 767 return realloc (ptr, size);
463 768
464 free (ptr); 769 free (ptr);
465 return 0; 770 return 0;
771#endif
466} 772}
467 773
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 775
470void 776void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 778{
473 alloc = cb; 779 alloc = cb;
474} 780}
475 781
… …
478{ 784{
479 ptr = alloc (ptr, size); 785 ptr = alloc (ptr, size);
480 786
481 if (!ptr && size) 787 if (!ptr && size)
482 { 788 {
789#if EV_AVOID_STDIO
790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
791#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
793#endif
484 abort (); 794 abort ();
485 } 795 }
486 796
487 return ptr; 797 return ptr;
488} 798}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 800#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 801#define ev_free(ptr) ev_realloc ((ptr), 0)
492 802
493/*****************************************************************************/ 803/*****************************************************************************/
494 804
805/* set in reify when reification needed */
806#define EV_ANFD_REIFY 1
807
495/* file descriptor info structure */ 808/* file descriptor info structure */
496typedef struct 809typedef struct
497{ 810{
498 WL head; 811 WL head;
499 unsigned char events; /* the events watched for */ 812 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 815 unsigned char unused;
503#if EV_USE_EPOLL 816#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 817 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 818#endif
506#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 820 SOCKET handle;
821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
508#endif 824#endif
509} ANFD; 825} ANFD;
510 826
511/* stores the pending event set for a given watcher */ 827/* stores the pending event set for a given watcher */
512typedef struct 828typedef struct
… …
567 883
568 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
569 885
570#endif 886#endif
571 887
572#if EV_MINIMAL < 2 888#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 891# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 892#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 893# define EV_RELEASE_CB (void)0
894# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 896#endif
897
898#define EVBREAK_RECURSE 0x80
581 899
582/*****************************************************************************/ 900/*****************************************************************************/
583 901
584#ifndef EV_HAVE_EV_TIME 902#ifndef EV_HAVE_EV_TIME
585ev_tstamp 903ev_tstamp
… …
629 if (delay > 0.) 947 if (delay > 0.)
630 { 948 {
631#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
632 struct timespec ts; 950 struct timespec ts;
633 951
634 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
638#elif defined(_WIN32) 954#elif defined(_WIN32)
639 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
640#else 956#else
641 struct timeval tv; 957 struct timeval tv;
642 958
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 960 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 961 /* by older ones */
962 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
650#endif 964#endif
651 } 965 }
652} 966}
653 967
654/*****************************************************************************/ 968/*****************************************************************************/
655 969
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 970#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 971
658/* find a suitable new size for the given array, */ 972/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 973/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 974inline_size int
661array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
662{ 976{
663 int ncur = cur + 1; 977 int ncur = cur + 1;
664 978
… …
676 } 990 }
677 991
678 return ncur; 992 return ncur;
679} 993}
680 994
681static noinline void * 995static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
683{ 997{
684 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
686} 1000}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1004
691#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
693 { \ 1007 { \
694 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1012 }
699 1013
… …
760} 1074}
761 1075
762/*****************************************************************************/ 1076/*****************************************************************************/
763 1077
764inline_speed void 1078inline_speed void
765fd_event (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1080{
767 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
768 ev_io *w; 1082 ev_io *w;
769 1083
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1088 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1089 ev_feed_event (EV_A_ (W)w, ev);
776 } 1090 }
777} 1091}
778 1092
1093/* do not submit kernel events for fds that have reify set */
1094/* because that means they changed while we were polling for new events */
1095inline_speed void
1096fd_event (EV_P_ int fd, int revents)
1097{
1098 ANFD *anfd = anfds + fd;
1099
1100 if (expect_true (!anfd->reify))
1101 fd_event_nocheck (EV_A_ fd, revents);
1102}
1103
779void 1104void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
781{ 1106{
782 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
784} 1109}
785 1110
786/* make sure the external fd watch events are in-sync */ 1111/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1112/* with the kernel/libev internal state */
788inline_size void 1113inline_size void
789fd_reify (EV_P) 1114fd_reify (EV_P)
790{ 1115{
791 int i; 1116 int i;
792 1117
1118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1119 for (i = 0; i < fdchangecnt; ++i)
1120 {
1121 int fd = fdchanges [i];
1122 ANFD *anfd = anfds + fd;
1123
1124 if (anfd->reify & EV__IOFDSET && anfd->head)
1125 {
1126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1127
1128 if (handle != anfd->handle)
1129 {
1130 unsigned long arg;
1131
1132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1133
1134 /* handle changed, but fd didn't - we need to do it in two steps */
1135 backend_modify (EV_A_ fd, anfd->events, 0);
1136 anfd->events = 0;
1137 anfd->handle = handle;
1138 }
1139 }
1140 }
1141#endif
1142
793 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
794 { 1144 {
795 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
797 ev_io *w; 1147 ev_io *w;
798 1148
799 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
800 1151
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1153
804#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1155 {
807 unsigned long arg; 1156 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1157
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1159 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1160
812 #endif 1161 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1162 o_reify = EV__IOFDSET; /* actually |= */
814 } 1163 }
815#endif
816 1164
817 { 1165 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1167 }
828 1168
829 fdchangecnt = 0; 1169 fdchangecnt = 0;
830} 1170}
831 1171
… …
843 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
844 } 1184 }
845} 1185}
846 1186
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1188inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
850{ 1190{
851 ev_io *w; 1191 ev_io *w;
852 1192
853 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1195 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1197 }
858} 1198}
859 1199
860/* check whether the given fd is atcually valid, for error recovery */ 1200/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1201inline_size int ecb_cold
862fd_valid (int fd) 1202fd_valid (int fd)
863{ 1203{
864#ifdef _WIN32 1204#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1206#else
867 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
868#endif 1208#endif
869} 1209}
870 1210
871/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
872static void noinline 1212static void noinline ecb_cold
873fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
874{ 1214{
875 int fd; 1215 int fd;
876 1216
877 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
881} 1221}
882 1222
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1223/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1224static void noinline ecb_cold
885fd_enomem (EV_P) 1225fd_enomem (EV_P)
886{ 1226{
887 int fd; 1227 int fd;
888 1228
889 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1230 if (anfds [fd].events)
891 { 1231 {
892 fd_kill (EV_A_ fd); 1232 fd_kill (EV_A_ fd);
893 return; 1233 break;
894 } 1234 }
895} 1235}
896 1236
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1237/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1238static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1243 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1244 if (anfds [fd].events)
905 { 1245 {
906 anfds [fd].events = 0; 1246 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1247 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1249 }
910} 1250}
911 1251
1252/* used to prepare libev internal fd's */
1253/* this is not fork-safe */
1254inline_speed void
1255fd_intern (int fd)
1256{
1257#ifdef _WIN32
1258 unsigned long arg = 1;
1259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1260#else
1261 fcntl (fd, F_SETFD, FD_CLOEXEC);
1262 fcntl (fd, F_SETFL, O_NONBLOCK);
1263#endif
1264}
1265
912/*****************************************************************************/ 1266/*****************************************************************************/
913 1267
914/* 1268/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1269 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1271 * the branching factor of the d-tree.
918 */ 1272 */
919 1273
920/* 1274/*
… …
988 1342
989 for (;;) 1343 for (;;)
990 { 1344 {
991 int c = k << 1; 1345 int c = k << 1;
992 1346
993 if (c > N + HEAP0 - 1) 1347 if (c >= N + HEAP0)
994 break; 1348 break;
995 1349
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1351 ? 1 : 0;
998 1352
… …
1034 1388
1035/* move an element suitably so it is in a correct place */ 1389/* move an element suitably so it is in a correct place */
1036inline_size void 1390inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1391adjustheap (ANHE *heap, int N, int k)
1038{ 1392{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1394 upheap (heap, k);
1041 else 1395 else
1042 downheap (heap, N, k); 1396 downheap (heap, N, k);
1043} 1397}
1044 1398
… …
1057/*****************************************************************************/ 1411/*****************************************************************************/
1058 1412
1059/* associate signal watchers to a signal signal */ 1413/* associate signal watchers to a signal signal */
1060typedef struct 1414typedef struct
1061{ 1415{
1416 EV_ATOMIC_T pending;
1417#if EV_MULTIPLICITY
1418 EV_P;
1419#endif
1062 WL head; 1420 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1421} ANSIG;
1065 1422
1066static ANSIG *signals; 1423static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1424
1071/*****************************************************************************/ 1425/*****************************************************************************/
1072 1426
1073/* used to prepare libev internal fd's */ 1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 1428
1087static void noinline 1429static void noinline ecb_cold
1088evpipe_init (EV_P) 1430evpipe_init (EV_P)
1089{ 1431{
1090 if (!ev_is_active (&pipe_w)) 1432 if (!ev_is_active (&pipe_w))
1091 { 1433 {
1092#if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1437 evfd = eventfd (0, 0);
1438
1439 if (evfd >= 0)
1094 { 1440 {
1095 evpipe [0] = -1; 1441 evpipe [0] = -1;
1096 fd_intern (evfd); 1442 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1443 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1444 }
1099 else 1445 else
1100#endif 1446# endif
1101 { 1447 {
1102 while (pipe (evpipe)) 1448 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1449 ev_syserr ("(libev) error creating signal/async pipe");
1104 1450
1105 fd_intern (evpipe [0]); 1451 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1456 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1458 }
1113} 1459}
1114 1460
1115inline_size void 1461inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1463{
1118 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE;
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE;
1474
1475 if (pipe_write_wanted)
1119 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* optimisation only */
1480
1120 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
1121
1122 *flag = 1;
1123 1482
1124#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1484 if (evfd >= 0)
1126 { 1485 {
1127 uint64_t counter = 1; 1486 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
1129 } 1488 }
1130 else 1489 else
1131#endif 1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
1132 write (evpipe [1], &old_errno, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
1133 1499
1134 errno = old_errno; 1500 errno = old_errno;
1135 } 1501 }
1136} 1502}
1137 1503
1138/* called whenever the libev signal pipe */ 1504/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1505/* got some events (signal, async) */
1140static void 1506static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1508{
1509 int i;
1510
1511 if (revents & EV_READ)
1512 {
1143#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1514 if (evfd >= 0)
1145 { 1515 {
1146 uint64_t counter; 1516 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
1148 } 1518 }
1149 else 1519 else
1150#endif 1520#endif
1151 { 1521 {
1152 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1153 read (evpipe [0], &dummy, 1); 1524 read (evpipe [0], &dummy, 1);
1525 }
1526 }
1527
1528 pipe_write_skipped = 0;
1529
1530#if EV_SIGNAL_ENABLE
1531 if (sig_pending)
1154 } 1532 {
1533 sig_pending = 0;
1155 1534
1156 if (gotsig && ev_is_default_loop (EV_A)) 1535 for (i = EV_NSIG - 1; i--; )
1157 { 1536 if (expect_false (signals [i].pending))
1158 int signum;
1159 gotsig = 0;
1160
1161 for (signum = signalmax; signum--; )
1162 if (signals [signum].gotsig)
1163 ev_feed_signal_event (EV_A_ signum + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1538 }
1539#endif
1165 1540
1166#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
1167 if (gotasync) 1542 if (async_pending)
1168 { 1543 {
1169 int i; 1544 async_pending = 0;
1170 gotasync = 0;
1171 1545
1172 for (i = asynccnt; i--; ) 1546 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 1547 if (asyncs [i]->sent)
1174 { 1548 {
1175 asyncs [i]->sent = 0; 1549 asyncs [i]->sent = 0;
… …
1179#endif 1553#endif
1180} 1554}
1181 1555
1182/*****************************************************************************/ 1556/*****************************************************************************/
1183 1557
1558void
1559ev_feed_signal (int signum)
1560{
1561#if EV_MULTIPLICITY
1562 EV_P = signals [signum - 1].loop;
1563
1564 if (!EV_A)
1565 return;
1566#endif
1567
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending);
1573}
1574
1184static void 1575static void
1185ev_sighandler (int signum) 1576ev_sighandler (int signum)
1186{ 1577{
1187#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct;
1189#endif
1190
1191#if _WIN32 1578#ifdef _WIN32
1192 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
1193#endif 1580#endif
1194 1581
1195 signals [signum - 1].gotsig = 1; 1582 ev_feed_signal (signum);
1196 evpipe_write (EV_A_ &gotsig);
1197} 1583}
1198 1584
1199void noinline 1585void noinline
1200ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
1201{ 1587{
1202 WL w; 1588 WL w;
1203 1589
1590 if (expect_false (signum <= 0 || signum > EV_NSIG))
1591 return;
1592
1593 --signum;
1594
1204#if EV_MULTIPLICITY 1595#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1596 /* it is permissible to try to feed a signal to the wrong loop */
1206#endif 1597 /* or, likely more useful, feeding a signal nobody is waiting for */
1207 1598
1208 --signum; 1599 if (expect_false (signals [signum].loop != EV_A))
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 1600 return;
1601#endif
1212 1602
1213 signals [signum].gotsig = 0; 1603 signals [signum].pending = 0;
1214 1604
1215 for (w = signals [signum].head; w; w = w->next) 1605 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 1607}
1218 1608
1609#if EV_USE_SIGNALFD
1610static void
1611sigfdcb (EV_P_ ev_io *iow, int revents)
1612{
1613 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1614
1615 for (;;)
1616 {
1617 ssize_t res = read (sigfd, si, sizeof (si));
1618
1619 /* not ISO-C, as res might be -1, but works with SuS */
1620 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1621 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1622
1623 if (res < (ssize_t)sizeof (si))
1624 break;
1625 }
1626}
1627#endif
1628
1629#endif
1630
1219/*****************************************************************************/ 1631/*****************************************************************************/
1220 1632
1633#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 1634static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 1635
1225static ev_signal childev; 1636static ev_signal childev;
1226 1637
1227#ifndef WIFCONTINUED 1638#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 1639# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
1234{ 1645{
1235 ev_child *w; 1646 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 1648
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 1650 {
1240 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
1242 { 1653 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1654 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 1679 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 1680 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 1682
1272 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 1686}
1276 1687
1277#endif 1688#endif
1278 1689
1279/*****************************************************************************/ 1690/*****************************************************************************/
1280 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1281#if EV_USE_PORT 1695#if EV_USE_PORT
1282# include "ev_port.c" 1696# include "ev_port.c"
1283#endif 1697#endif
1284#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1292#endif 1706#endif
1293#if EV_USE_SELECT 1707#if EV_USE_SELECT
1294# include "ev_select.c" 1708# include "ev_select.c"
1295#endif 1709#endif
1296 1710
1297int 1711int ecb_cold
1298ev_version_major (void) 1712ev_version_major (void)
1299{ 1713{
1300 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1301} 1715}
1302 1716
1303int 1717int ecb_cold
1304ev_version_minor (void) 1718ev_version_minor (void)
1305{ 1719{
1306 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1307} 1721}
1308 1722
1309/* return true if we are running with elevated privileges and should ignore env variables */ 1723/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 1724int inline_size ecb_cold
1311enable_secure (void) 1725enable_secure (void)
1312{ 1726{
1313#ifdef _WIN32 1727#ifdef _WIN32
1314 return 0; 1728 return 0;
1315#else 1729#else
1316 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1317 || getgid () != getegid (); 1731 || getgid () != getegid ();
1318#endif 1732#endif
1319} 1733}
1320 1734
1321unsigned int 1735unsigned int ecb_cold
1322ev_supported_backends (void) 1736ev_supported_backends (void)
1323{ 1737{
1324 unsigned int flags = 0; 1738 unsigned int flags = 0;
1325 1739
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 1745
1332 return flags; 1746 return flags;
1333} 1747}
1334 1748
1335unsigned int 1749unsigned int ecb_cold
1336ev_recommended_backends (void) 1750ev_recommended_backends (void)
1337{ 1751{
1338 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1339 1753
1340#ifndef __NetBSD__ 1754#ifndef __NetBSD__
… …
1345#ifdef __APPLE__ 1759#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 1760 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1761 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1762 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 1763#endif
1764#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1766#endif
1350 1767
1351 return flags; 1768 return flags;
1352} 1769}
1353 1770
1354unsigned int 1771unsigned int ecb_cold
1355ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1356{ 1773{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1358 1775
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1361 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1362 1779
1363 return flags; 1780 return flags;
1364} 1781}
1365 1782
1366unsigned int 1783unsigned int
1367ev_backend (EV_P) 1784ev_backend (EV_P)
1368{ 1785{
1369 return backend; 1786 return backend;
1370} 1787}
1371 1788
1372#if EV_MINIMAL < 2 1789#if EV_FEATURE_API
1373unsigned int 1790unsigned int
1374ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1375{ 1792{
1376 return loop_count; 1793 return loop_count;
1377} 1794}
1378 1795
1379unsigned int 1796unsigned int
1380ev_loop_depth (EV_P) 1797ev_depth (EV_P)
1381{ 1798{
1382 return loop_depth; 1799 return loop_depth;
1383} 1800}
1384 1801
1385void 1802void
… …
1404ev_userdata (EV_P) 1821ev_userdata (EV_P)
1405{ 1822{
1406 return userdata; 1823 return userdata;
1407} 1824}
1408 1825
1826void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410{ 1828{
1411 invoke_cb = invoke_pending_cb; 1829 invoke_cb = invoke_pending_cb;
1412} 1830}
1413 1831
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 1832void
1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1415{ 1834{
1416 suspend_cb = suspend_cb_; 1835 release_cb = release;
1417 resume_cb = resume_cb_; 1836 acquire_cb = acquire;
1418} 1837}
1419#endif 1838#endif
1420 1839
1421/* initialise a loop structure, must be zero-initialised */ 1840/* initialise a loop structure, must be zero-initialised */
1422static void noinline 1841static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1424{ 1843{
1425 if (!backend) 1844 if (!backend)
1426 { 1845 {
1846 origflags = flags;
1847
1427#if EV_USE_REALTIME 1848#if EV_USE_REALTIME
1428 if (!have_realtime) 1849 if (!have_realtime)
1429 { 1850 {
1430 struct timespec ts; 1851 struct timespec ts;
1431 1852
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1863 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 1864 have_monotonic = 1;
1444 } 1865 }
1445#endif 1866#endif
1446 1867
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 1868 /* pid check not overridable via env */
1465#ifndef _WIN32 1869#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 1870 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 1871 curpid = getpid ();
1468#endif 1872#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 1875 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 1878
1475 if (!(flags & 0x0000ffffU)) 1879 ev_rt_now = ev_time ();
1880 mn_now = get_clock ();
1881 now_floor = mn_now;
1882 rtmn_diff = ev_rt_now - mn_now;
1883#if EV_FEATURE_API
1884 invoke_cb = ev_invoke_pending;
1885#endif
1886
1887 io_blocktime = 0.;
1888 timeout_blocktime = 0.;
1889 backend = 0;
1890 backend_fd = -1;
1891 sig_pending = 0;
1892#if EV_ASYNC_ENABLE
1893 async_pending = 0;
1894#endif
1895 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0;
1897#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif
1900#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1902#endif
1903
1904 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1477 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1478#if EV_USE_PORT 1910#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 1912#endif
1481#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 1924#endif
1493 1925
1494 ev_prepare_init (&pending_w, pendingcb); 1926 ev_prepare_init (&pending_w, pendingcb);
1495 1927
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 1929 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 1930 ev_set_priority (&pipe_w, EV_MAXPRI);
1931#endif
1498 } 1932 }
1499} 1933}
1500 1934
1501/* free up a loop structure */ 1935/* free up a loop structure */
1502static void noinline 1936void ecb_cold
1503loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1504{ 1938{
1505 int i; 1939 int i;
1506 1940
1941#if EV_MULTIPLICITY
1942 /* mimic free (0) */
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt))
1950 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING;
1953 }
1954#endif
1955
1956#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev))
1958 {
1959 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev);
1961 }
1962#endif
1963
1507 if (ev_is_active (&pipe_w)) 1964 if (ev_is_active (&pipe_w))
1508 { 1965 {
1509 ev_ref (EV_A); /* signal watcher */ 1966 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 1968
1512#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1513 if (evfd >= 0) 1970 if (evfd >= 0)
1514 close (evfd); 1971 close (evfd);
1515#endif 1972#endif
1516 1973
1517 if (evpipe [0] >= 0) 1974 if (evpipe [0] >= 0)
1518 { 1975 {
1519 close (evpipe [0]); 1976 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 1977 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 1978 }
1522 } 1979 }
1980
1981#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w))
1983 close (sigfd);
1984#endif
1523 1985
1524#if EV_USE_INOTIFY 1986#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 1987 if (fs_fd >= 0)
1526 close (fs_fd); 1988 close (fs_fd);
1527#endif 1989#endif
1528 1990
1529 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1530 close (backend_fd); 1992 close (backend_fd);
1531 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1532#if EV_USE_PORT 1997#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 1999#endif
1535#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2016#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2017 array_free (idle, [i]);
1553#endif 2018#endif
1554 } 2019 }
1555 2020
1556 ev_free (anfds); anfdmax = 0; 2021 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2022
1558 /* have to use the microsoft-never-gets-it-right macro */ 2023 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2024 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2025 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2026 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1564#endif 2029#endif
1565#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1567#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1568 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1572#endif 2040#endif
1573 2041
1574 backend = 0; 2042 backend = 0;
2043
2044#if EV_MULTIPLICITY
2045 if (ev_is_default_loop (EV_A))
2046#endif
2047 ev_default_loop_ptr = 0;
2048#if EV_MULTIPLICITY
2049 else
2050 ev_free (EV_A);
2051#endif
1575} 2052}
1576 2053
1577#if EV_USE_INOTIFY 2054#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
1579#endif 2056#endif
… …
1594 infy_fork (EV_A); 2071 infy_fork (EV_A);
1595#endif 2072#endif
1596 2073
1597 if (ev_is_active (&pipe_w)) 2074 if (ev_is_active (&pipe_w))
1598 { 2075 {
1599 /* this "locks" the handlers against writing to the pipe */ 2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2077
1606 ev_ref (EV_A); 2078 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2079 ev_io_stop (EV_A_ &pipe_w);
1608 2080
1609#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
… …
1611 close (evfd); 2083 close (evfd);
1612#endif 2084#endif
1613 2085
1614 if (evpipe [0] >= 0) 2086 if (evpipe [0] >= 0)
1615 { 2087 {
1616 close (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2090 }
1619 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1623 } 2097 }
1624 2098
1625 postfork = 0; 2099 postfork = 0;
1626} 2100}
1627 2101
1628#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1629 2103
1630struct ev_loop * 2104struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1632{ 2106{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2108
1635 memset (loop, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1638 2111
1639 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1640 return loop; 2113 return EV_A;
1641 2114
2115 ev_free (EV_A);
1642 return 0; 2116 return 0;
1643} 2117}
1644 2118
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2119#endif /* multiplicity */
1658 2120
1659#if EV_VERIFY 2121#if EV_VERIFY
1660static void noinline 2122static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2123verify_watcher (EV_P_ W w)
1662{ 2124{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2126
1665 if (w->pending) 2127 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2129}
1668 2130
1669static void noinline 2131static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2132verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2133{
1672 int i; 2134 int i;
1673 2135
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2136 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2141
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2143 }
1682} 2144}
1683 2145
1684static void noinline 2146static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2147array_verify (EV_P_ W *ws, int cnt)
1686{ 2148{
1687 while (cnt--) 2149 while (cnt--)
1688 { 2150 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2152 verify_watcher (EV_A_ ws [cnt]);
1691 } 2153 }
1692} 2154}
1693#endif 2155#endif
1694 2156
1695#if EV_MINIMAL < 2 2157#if EV_FEATURE_API
1696void 2158void ecb_cold
1697ev_loop_verify (EV_P) 2159ev_verify (EV_P)
1698{ 2160{
1699#if EV_VERIFY 2161#if EV_VERIFY
1700 int i; 2162 int i;
1701 WL w; 2163 WL w;
1702 2164
… …
1736#if EV_FORK_ENABLE 2198#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2199 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2200 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2201#endif
1740 2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
1741#if EV_ASYNC_ENABLE 2208#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2209 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2211#endif
1745 2212
2213#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2214 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
1748 2217
2218#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2219 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
1751 2222
1752# if 0 2223# if 0
2224#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2227#endif
1755# endif 2228# endif
1756#endif 2229#endif
1757} 2230}
1758#endif 2231#endif
1759 2232
1760#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1761struct ev_loop * 2234struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2235#else
1764int 2236int
2237#endif
1765ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1766#endif
1767{ 2239{
1768 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1769 { 2241 {
1770#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2244#else
1773 ev_default_loop_ptr = 1; 2245 ev_default_loop_ptr = 1;
1774#endif 2246#endif
1775 2247
1776 loop_init (EV_A_ flags); 2248 loop_init (EV_A_ flags);
1777 2249
1778 if (ev_backend (EV_A)) 2250 if (ev_backend (EV_A))
1779 { 2251 {
1780#ifndef _WIN32 2252#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2253 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2254 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2255 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2256 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2257#endif
… …
1790 2262
1791 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1792} 2264}
1793 2265
1794void 2266void
1795ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1796{ 2268{
1797#if EV_MULTIPLICITY
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
1819} 2270}
1820 2271
1821/*****************************************************************************/ 2272/*****************************************************************************/
1822 2273
1823void 2274void
1824ev_invoke (EV_P_ void *w, int revents) 2275ev_invoke (EV_P_ void *w, int revents)
1825{ 2276{
1826 EV_CB_INVOKE ((W)w, revents); 2277 EV_CB_INVOKE ((W)w, revents);
2278}
2279
2280unsigned int
2281ev_pending_count (EV_P)
2282{
2283 int pri;
2284 unsigned int count = 0;
2285
2286 for (pri = NUMPRI; pri--; )
2287 count += pendingcnt [pri];
2288
2289 return count;
1827} 2290}
1828 2291
1829void noinline 2292void noinline
1830ev_invoke_pending (EV_P) 2293ev_invoke_pending (EV_P)
1831{ 2294{
… …
1833 2296
1834 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
1836 { 2299 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1838
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841 2301
1842 p->w->pending = 0; 2302 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2304 EV_FREQUENT_CHECK;
1845 } 2305 }
… …
1902 EV_FREQUENT_CHECK; 2362 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2363 feed_reverse (EV_A_ (W)w);
1904 } 2364 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2366
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2367 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2368 }
1909} 2369}
1910 2370
1911#if EV_PERIODIC_ENABLE 2371#if EV_PERIODIC_ENABLE
2372
2373static void noinline
2374periodic_recalc (EV_P_ ev_periodic *w)
2375{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378
2379 /* the above almost always errs on the low side */
2380 while (at <= ev_rt_now)
2381 {
2382 ev_tstamp nat = at + w->interval;
2383
2384 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at))
2386 {
2387 at = ev_rt_now;
2388 break;
2389 }
2390
2391 at = nat;
2392 }
2393
2394 ev_at (w) = at;
2395}
2396
1912/* make periodics pending */ 2397/* make periodics pending */
1913inline_size void 2398inline_size void
1914periodics_reify (EV_P) 2399periodics_reify (EV_P)
1915{ 2400{
1916 EV_FREQUENT_CHECK; 2401 EV_FREQUENT_CHECK;
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2420 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2421 downheap (periodics, periodiccnt, HEAP0);
1937 } 2422 }
1938 else if (w->interval) 2423 else if (w->interval)
1939 { 2424 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2425 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 2426 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2427 downheap (periodics, periodiccnt, HEAP0);
1956 } 2428 }
1957 else 2429 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2430 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2437 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2438 }
1967} 2439}
1968 2440
1969/* simply recalculate all periodics */ 2441/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2443static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2444periodics_reschedule (EV_P)
1973{ 2445{
1974 int i; 2446 int i;
1975 2447
1976 /* adjust periodics after time jump */ 2448 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2452
1981 if (w->reschedule_cb) 2453 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2455 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2456 periodic_recalc (EV_A_ w);
1985 2457
1986 ANHE_at_cache (periodics [i]); 2458 ANHE_at_cache (periodics [i]);
1987 } 2459 }
1988 2460
1989 reheap (periodics, periodiccnt); 2461 reheap (periodics, periodiccnt);
1990} 2462}
1991#endif 2463#endif
1992 2464
1993/* adjust all timers by a given offset */ 2465/* adjust all timers by a given offset */
1994static void noinline 2466static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2467timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2468{
1997 int i; 2469 int i;
1998 2470
1999 for (i = 0; i < timercnt; ++i) 2471 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2475 ANHE_at_cache (*he);
2004 } 2476 }
2005} 2477}
2006 2478
2007/* fetch new monotonic and realtime times from the kernel */ 2479/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2480/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2481inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2482time_update (EV_P_ ev_tstamp max_block)
2011{ 2483{
2012#if EV_USE_MONOTONIC 2484#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2485 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2508 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
2038 */ 2510 */
2039 for (i = 4; --i; ) 2511 for (i = 4; --i; )
2040 { 2512 {
2513 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
2042 2515
2516 diff = odiff - rtmn_diff;
2517
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2519 return; /* all is well */
2045 2520
2046 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2522 mn_now = get_clock ();
2048 now_floor = mn_now; 2523 now_floor = mn_now;
… …
2071 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
2072 } 2547 }
2073} 2548}
2074 2549
2075void 2550void
2076ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
2077{ 2552{
2078#if EV_MINIMAL < 2 2553#if EV_FEATURE_API
2079 ++loop_depth; 2554 ++loop_depth;
2080#endif 2555#endif
2081 2556
2557 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2558
2082 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
2083 2560
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2561 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 2562
2086 do 2563 do
2087 { 2564 {
2088#if EV_VERIFY >= 2 2565#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 2566 ev_verify (EV_A);
2090#endif 2567#endif
2091 2568
2092#ifndef _WIN32 2569#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 2584 EV_INVOKE_PENDING;
2108 } 2585 }
2109#endif 2586#endif
2110 2587
2588#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
2113 { 2591 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 2593 EV_INVOKE_PENDING;
2116 } 2594 }
2595#endif
2596
2597 if (expect_false (loop_done))
2598 break;
2117 2599
2118 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 2601 if (expect_false (postfork))
2120 loop_fork (EV_A); 2602 loop_fork (EV_A);
2121 2603
… …
2125 /* calculate blocking time */ 2607 /* calculate blocking time */
2126 { 2608 {
2127 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
2129 2611
2612 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now;
2614
2615 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100);
2617
2618 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1;
2620
2621 ECB_MEMORY_FENCE;
2622
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 2624 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
2139 2626
2140 if (timercnt) 2627 if (timercnt)
2141 { 2628 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
2144 } 2631 }
2145 2632
2146#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 2634 if (periodiccnt)
2148 { 2635 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
2151 } 2638 }
2152#endif 2639#endif
2153 2640
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
2644
2645 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime;
2157 2649
2158 /* extra check because io_blocktime is commonly 0 */ 2650 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 2651 if (expect_false (io_blocktime))
2160 { 2652 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2653 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 2654
2163 if (sleeptime > waittime - backend_fudge) 2655 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 2656 sleeptime = waittime - backend_mintime;
2165 2657
2166 if (expect_true (sleeptime > 0.)) 2658 if (expect_true (sleeptime > 0.))
2167 { 2659 {
2168 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 2661 waittime -= sleeptime;
2170 } 2662 }
2171 } 2663 }
2172 } 2664 }
2173 2665
2174#if EV_MINIMAL < 2 2666#if EV_FEATURE_API
2175 ++loop_count; 2667 ++loop_count;
2176#endif 2668#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 2670 backend_poll (EV_A_ waittime);
2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672
2673 pipe_write_wanted = 0;
2674
2675 if (pipe_write_skipped)
2676 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 }
2680
2178 2681
2179 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
2181 } 2684 }
2182 2685
… …
2189#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 2694 idle_reify (EV_A);
2192#endif 2695#endif
2193 2696
2697#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
2197 2702
2198 EV_INVOKE_PENDING; 2703 EV_INVOKE_PENDING;
2199 } 2704 }
2200 while (expect_true ( 2705 while (expect_true (
2201 activecnt 2706 activecnt
2202 && !loop_done 2707 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 2709 ));
2205 2710
2206 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2208 2713
2209#if EV_MINIMAL < 2 2714#if EV_FEATURE_API
2210 --loop_depth; 2715 --loop_depth;
2211#endif 2716#endif
2212} 2717}
2213 2718
2214void 2719void
2215ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
2216{ 2721{
2217 loop_done = how; 2722 loop_done = how;
2218} 2723}
2219 2724
2220void 2725void
… …
2267inline_size void 2772inline_size void
2268wlist_del (WL *head, WL elem) 2773wlist_del (WL *head, WL elem)
2269{ 2774{
2270 while (*head) 2775 while (*head)
2271 { 2776 {
2272 if (*head == elem) 2777 if (expect_true (*head == elem))
2273 { 2778 {
2274 *head = elem->next; 2779 *head = elem->next;
2275 return; 2780 break;
2276 } 2781 }
2277 2782
2278 head = &(*head)->next; 2783 head = &(*head)->next;
2279 } 2784 }
2280} 2785}
… …
2340 2845
2341 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2342 return; 2847 return;
2343 2848
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2849 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 2851
2347 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
2348 2853
2349 ev_start (EV_A_ (W)w, 1); 2854 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 2856 wlist_add (&anfds[fd].head, (WL)w);
2352 2857
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 2859 w->events &= ~EV__IOFDSET;
2355 2860
2356 EV_FREQUENT_CHECK; 2861 EV_FREQUENT_CHECK;
2357} 2862}
2358 2863
… …
2368 EV_FREQUENT_CHECK; 2873 EV_FREQUENT_CHECK;
2369 2874
2370 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
2372 2877
2373 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 2879
2375 EV_FREQUENT_CHECK; 2880 EV_FREQUENT_CHECK;
2376} 2881}
2377 2882
2378void noinline 2883void noinline
… …
2420 timers [active] = timers [timercnt + HEAP0]; 2925 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 2926 adjustheap (timers, timercnt, active);
2422 } 2927 }
2423 } 2928 }
2424 2929
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 2930 ev_at (w) -= mn_now;
2428 2931
2429 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2933
2934 EV_FREQUENT_CHECK;
2430} 2935}
2431 2936
2432void noinline 2937void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 2938ev_timer_again (EV_P_ ev_timer *w)
2434{ 2939{
… …
2452 } 2957 }
2453 2958
2454 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2455} 2960}
2456 2961
2962ev_tstamp
2963ev_timer_remaining (EV_P_ ev_timer *w)
2964{
2965 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2966}
2967
2457#if EV_PERIODIC_ENABLE 2968#if EV_PERIODIC_ENABLE
2458void noinline 2969void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 2970ev_periodic_start (EV_P_ ev_periodic *w)
2460{ 2971{
2461 if (expect_false (ev_is_active (w))) 2972 if (expect_false (ev_is_active (w)))
… …
2464 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 2977 else if (w->interval)
2467 { 2978 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2979 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 2981 }
2472 else 2982 else
2473 ev_at (w) = w->offset; 2983 ev_at (w) = w->offset;
2474 2984
2475 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3017 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3018 adjustheap (periodics, periodiccnt, active);
2509 } 3019 }
2510 } 3020 }
2511 3021
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3022 ev_stop (EV_A_ (W)w);
3023
3024 EV_FREQUENT_CHECK;
2515} 3025}
2516 3026
2517void noinline 3027void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3028ev_periodic_again (EV_P_ ev_periodic *w)
2519{ 3029{
… …
2525 3035
2526#ifndef SA_RESTART 3036#ifndef SA_RESTART
2527# define SA_RESTART 0 3037# define SA_RESTART 0
2528#endif 3038#endif
2529 3039
3040#if EV_SIGNAL_ENABLE
3041
2530void noinline 3042void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3043ev_signal_start (EV_P_ ev_signal *w)
2532{ 3044{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
2537 return; 3046 return;
2538 3047
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3049
2541 evpipe_init (EV_A); 3050#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3053
2543 EV_FREQUENT_CHECK; 3054 signals [w->signum - 1].loop = EV_A;
3055#endif
2544 3056
3057 EV_FREQUENT_CHECK;
3058
3059#if EV_USE_SIGNALFD
3060 if (sigfd == -2)
2545 { 3061 {
2546#ifndef _WIN32 3062 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3063 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3064 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3065
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3066 if (sigfd >= 0)
3067 {
3068 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3069
2554#ifndef _WIN32 3070 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3071
2556#endif 3072 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3073 ev_set_priority (&sigfd_w, EV_MAXPRI);
3074 ev_io_start (EV_A_ &sigfd_w);
3075 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3076 }
2557 } 3077 }
3078
3079 if (sigfd >= 0)
3080 {
3081 /* TODO: check .head */
3082 sigaddset (&sigfd_set, w->signum);
3083 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3084
3085 signalfd (sigfd, &sigfd_set, 0);
3086 }
3087#endif
2558 3088
2559 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3090 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3091
2562 if (!((WL)w)->next) 3092 if (!((WL)w)->next)
3093# if EV_USE_SIGNALFD
3094 if (sigfd < 0) /*TODO*/
3095# endif
2563 { 3096 {
2564#if _WIN32 3097# ifdef _WIN32
3098 evpipe_init (EV_A);
3099
2565 signal (w->signum, ev_sighandler); 3100 signal (w->signum, ev_sighandler);
2566#else 3101# else
2567 struct sigaction sa; 3102 struct sigaction sa;
3103
3104 evpipe_init (EV_A);
3105
2568 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3108 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3109 sigaction (w->signum, &sa, 0);
3110
3111 if (origflags & EVFLAG_NOSIGMASK)
3112 {
3113 sigemptyset (&sa.sa_mask);
3114 sigaddset (&sa.sa_mask, w->signum);
3115 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3116 }
2572#endif 3117#endif
2573 } 3118 }
2574 3119
2575 EV_FREQUENT_CHECK; 3120 EV_FREQUENT_CHECK;
2576} 3121}
2577 3122
2578void noinline 3123void noinline
… …
2586 3131
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3132 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3133 ev_stop (EV_A_ (W)w);
2589 3134
2590 if (!signals [w->signum - 1].head) 3135 if (!signals [w->signum - 1].head)
3136 {
3137#if EV_MULTIPLICITY
3138 signals [w->signum - 1].loop = 0; /* unattach from signal */
3139#endif
3140#if EV_USE_SIGNALFD
3141 if (sigfd >= 0)
3142 {
3143 sigset_t ss;
3144
3145 sigemptyset (&ss);
3146 sigaddset (&ss, w->signum);
3147 sigdelset (&sigfd_set, w->signum);
3148
3149 signalfd (sigfd, &sigfd_set, 0);
3150 sigprocmask (SIG_UNBLOCK, &ss, 0);
3151 }
3152 else
3153#endif
2591 signal (w->signum, SIG_DFL); 3154 signal (w->signum, SIG_DFL);
3155 }
2592 3156
2593 EV_FREQUENT_CHECK; 3157 EV_FREQUENT_CHECK;
2594} 3158}
3159
3160#endif
3161
3162#if EV_CHILD_ENABLE
2595 3163
2596void 3164void
2597ev_child_start (EV_P_ ev_child *w) 3165ev_child_start (EV_P_ ev_child *w)
2598{ 3166{
2599#if EV_MULTIPLICITY 3167#if EV_MULTIPLICITY
… …
2603 return; 3171 return;
2604 3172
2605 EV_FREQUENT_CHECK; 3173 EV_FREQUENT_CHECK;
2606 3174
2607 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3177
2610 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2611} 3179}
2612 3180
2613void 3181void
… …
2617 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2618 return; 3186 return;
2619 3187
2620 EV_FREQUENT_CHECK; 3188 EV_FREQUENT_CHECK;
2621 3189
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
2624 3192
2625 EV_FREQUENT_CHECK; 3193 EV_FREQUENT_CHECK;
2626} 3194}
3195
3196#endif
2627 3197
2628#if EV_STAT_ENABLE 3198#if EV_STAT_ENABLE
2629 3199
2630# ifdef _WIN32 3200# ifdef _WIN32
2631# undef lstat 3201# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3207#define MIN_STAT_INTERVAL 0.1074891
2638 3208
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3210
2641#if EV_USE_INOTIFY 3211#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3212
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3215
2644static void noinline 3216static void noinline
2645infy_add (EV_P_ ev_stat *w) 3217infy_add (EV_P_ ev_stat *w)
2646{ 3218{
2647 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); 3219 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);
2648 3220
2649 if (w->wd < 0) 3221 if (w->wd >= 0)
3222 {
3223 struct statfs sfs;
3224
3225 /* now local changes will be tracked by inotify, but remote changes won't */
3226 /* unless the filesystem is known to be local, we therefore still poll */
3227 /* also do poll on <2.6.25, but with normal frequency */
3228
3229 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */
3234 || sfs.f_type == 0x3153464a /* jfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */
3237 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3241 }
3242 else
3243 {
3244 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3245 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3246
2654 /* monitor some parent directory for speedup hints */ 3247 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3248 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3249 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3250 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3251 {
2659 char path [4096]; 3252 char path [4096];
… …
2669 if (!pend || pend == path) 3262 if (!pend || pend == path)
2670 break; 3263 break;
2671 3264
2672 *pend = 0; 3265 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3267 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3269 }
2677 } 3270 }
2678 3271
2679 if (w->wd >= 0) 3272 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3274
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3275 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3276 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3277 ev_timer_again (EV_A_ &w->timer);
2699 } 3278 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3279}
2701 3280
2702static void noinline 3281static void noinline
2703infy_del (EV_P_ ev_stat *w) 3282infy_del (EV_P_ ev_stat *w)
2704{ 3283{
… …
2707 3286
2708 if (wd < 0) 3287 if (wd < 0)
2709 return; 3288 return;
2710 3289
2711 w->wd = -2; 3290 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3293
2715 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2717} 3296}
… …
2719static void noinline 3298static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3300{
2722 if (slot < 0) 3301 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3302 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
2726 else 3305 else
2727 { 3306 {
2728 WL w_; 3307 WL w_;
2729 3308
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3310 {
2732 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3312 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3313
2735 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
2736 { 3315 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3317 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3319 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3321 }
2743 3322
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3328
2750static void 3329static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3330infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3331{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3332 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3333 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3334 int len = read (fs_fd, buf, sizeof (buf));
2757 3335
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3336 for (ofs = 0; ofs < len; )
3337 {
3338 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3339 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len;
3341 }
2760} 3342}
2761 3343
2762inline_size void 3344inline_size void ecb_cold
2763check_2625 (EV_P) 3345ev_check_2625 (EV_P)
2764{ 3346{
2765 /* kernels < 2.6.25 are borked 3347 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3349 */
2768 struct utsname buf; 3350 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3351 return;
2773 3352
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 3353 fs_2625 = 1;
3354}
3355
3356inline_size int
3357infy_newfd (void)
3358{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0)
3362 return fd;
3363#endif
3364 return inotify_init ();
2783} 3365}
2784 3366
2785inline_size void 3367inline_size void
2786infy_init (EV_P) 3368infy_init (EV_P)
2787{ 3369{
2788 if (fs_fd != -2) 3370 if (fs_fd != -2)
2789 return; 3371 return;
2790 3372
2791 fs_fd = -1; 3373 fs_fd = -1;
2792 3374
2793 check_2625 (EV_A); 3375 ev_check_2625 (EV_A);
2794 3376
2795 fs_fd = inotify_init (); 3377 fs_fd = infy_newfd ();
2796 3378
2797 if (fs_fd >= 0) 3379 if (fs_fd >= 0)
2798 { 3380 {
3381 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3382 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3383 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3384 ev_io_start (EV_A_ &fs_w);
3385 ev_unref (EV_A);
2802 } 3386 }
2803} 3387}
2804 3388
2805inline_size void 3389inline_size void
2806infy_fork (EV_P) 3390infy_fork (EV_P)
… …
2808 int slot; 3392 int slot;
2809 3393
2810 if (fs_fd < 0) 3394 if (fs_fd < 0)
2811 return; 3395 return;
2812 3396
3397 ev_ref (EV_A);
3398 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3399 close (fs_fd);
2814 fs_fd = inotify_init (); 3400 fs_fd = infy_newfd ();
2815 3401
3402 if (fs_fd >= 0)
3403 {
3404 fd_intern (fs_fd);
3405 ev_io_set (&fs_w, fs_fd, EV_READ);
3406 ev_io_start (EV_A_ &fs_w);
3407 ev_unref (EV_A);
3408 }
3409
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3411 {
2818 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
2820 3414
2821 while (w_) 3415 while (w_)
… …
2826 w->wd = -1; 3420 w->wd = -1;
2827 3421
2828 if (fs_fd >= 0) 3422 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3423 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3424 else
3425 {
3426 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3427 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3428 ev_timer_again (EV_A_ &w->timer);
3429 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3430 }
2832 } 3431 }
2833 } 3432 }
2834} 3433}
2835 3434
2836#endif 3435#endif
… …
2853static void noinline 3452static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3453stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3454{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3456
2858 /* we copy this here each the time so that */ 3457 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 3458 ev_stat_stat (EV_A_ w);
2862 3459
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3460 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3461 if (
2865 w->prev.st_dev != w->attr.st_dev 3462 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3463 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3464 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3465 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3466 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3467 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3468 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3469 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3470 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3471 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3472 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3473 ) {
3474 /* we only update w->prev on actual differences */
3475 /* in case we test more often than invoke the callback, */
3476 /* to ensure that prev is always different to attr */
3477 w->prev = prev;
3478
2877 #if EV_USE_INOTIFY 3479 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3480 if (fs_fd >= 0)
2879 { 3481 {
2880 infy_del (EV_A_ w); 3482 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3483 infy_add (EV_A_ w);
… …
2906 3508
2907 if (fs_fd >= 0) 3509 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3510 infy_add (EV_A_ w);
2909 else 3511 else
2910#endif 3512#endif
3513 {
2911 ev_timer_again (EV_A_ &w->timer); 3514 ev_timer_again (EV_A_ &w->timer);
3515 ev_unref (EV_A);
3516 }
2912 3517
2913 ev_start (EV_A_ (W)w, 1); 3518 ev_start (EV_A_ (W)w, 1);
2914 3519
2915 EV_FREQUENT_CHECK; 3520 EV_FREQUENT_CHECK;
2916} 3521}
… …
2925 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
2926 3531
2927#if EV_USE_INOTIFY 3532#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 3533 infy_del (EV_A_ w);
2929#endif 3534#endif
3535
3536 if (ev_is_active (&w->timer))
3537 {
3538 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 3539 ev_timer_stop (EV_A_ &w->timer);
3540 }
2931 3541
2932 ev_stop (EV_A_ (W)w); 3542 ev_stop (EV_A_ (W)w);
2933 3543
2934 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2935} 3545}
… …
2980 3590
2981 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
2982} 3592}
2983#endif 3593#endif
2984 3594
3595#if EV_PREPARE_ENABLE
2985void 3596void
2986ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
2987{ 3598{
2988 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
2989 return; 3600 return;
… …
3015 3626
3016 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
3017 3628
3018 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
3019} 3630}
3631#endif
3020 3632
3633#if EV_CHECK_ENABLE
3021void 3634void
3022ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
3023{ 3636{
3024 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
3025 return; 3638 return;
… …
3051 3664
3052 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
3053 3666
3054 EV_FREQUENT_CHECK; 3667 EV_FREQUENT_CHECK;
3055} 3668}
3669#endif
3056 3670
3057#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
3058void noinline 3672void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
3060{ 3674{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
3062} 3676}
3063 3677
3064static void 3678static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 3680{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 3682
3069 if (ev_cb (w)) 3683 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 3685 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
3073} 3687}
3074 3688
3075static void 3689static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 3691{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3692 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 3693
3080 { 3694 {
3081 struct ev_loop *loop = w->other; 3695 EV_P = w->other;
3082 3696
3083 while (fdchangecnt) 3697 while (fdchangecnt)
3084 { 3698 {
3085 fd_reify (EV_A); 3699 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 3701 }
3088 } 3702 }
3089} 3703}
3090 3704
3091static void 3705static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3708 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 3709
3096 ev_embed_stop (EV_A_ w); 3710 ev_embed_stop (EV_A_ w);
3097 3711
3098 { 3712 {
3099 struct ev_loop *loop = w->other; 3713 EV_P = w->other;
3100 3714
3101 ev_loop_fork (EV_A); 3715 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3716 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 3717 }
3104 3718
3105 ev_embed_start (EV_A_ w); 3719 ev_embed_start (EV_A_ w);
3106} 3720}
3107 3721
… …
3118{ 3732{
3119 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
3120 return; 3734 return;
3121 3735
3122 { 3736 {
3123 struct ev_loop *loop = w->other; 3737 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3739 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 3740 }
3127 3741
3128 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
… …
3155 3769
3156 ev_io_stop (EV_A_ &w->io); 3770 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 3771 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 3772 ev_fork_stop (EV_A_ &w->fork);
3159 3773
3774 ev_stop (EV_A_ (W)w);
3775
3160 EV_FREQUENT_CHECK; 3776 EV_FREQUENT_CHECK;
3161} 3777}
3162#endif 3778#endif
3163 3779
3164#if EV_FORK_ENABLE 3780#if EV_FORK_ENABLE
… …
3197 3813
3198 EV_FREQUENT_CHECK; 3814 EV_FREQUENT_CHECK;
3199} 3815}
3200#endif 3816#endif
3201 3817
3818#if EV_CLEANUP_ENABLE
3819void
3820ev_cleanup_start (EV_P_ ev_cleanup *w)
3821{
3822 if (expect_false (ev_is_active (w)))
3823 return;
3824
3825 EV_FREQUENT_CHECK;
3826
3827 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3829 cleanups [cleanupcnt - 1] = w;
3830
3831 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK;
3834}
3835
3836void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w)
3838{
3839 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w)))
3841 return;
3842
3843 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A);
3845
3846 {
3847 int active = ev_active (w);
3848
3849 cleanups [active - 1] = cleanups [--cleanupcnt];
3850 ev_active (cleanups [active - 1]) = active;
3851 }
3852
3853 ev_stop (EV_A_ (W)w);
3854
3855 EV_FREQUENT_CHECK;
3856}
3857#endif
3858
3202#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
3203void 3860void
3204ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
3205{ 3862{
3206 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
3207 return; 3864 return;
3208 3865
3866 w->sent = 0;
3867
3209 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
3210 3869
3211 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
3212 3871
3213 ev_start (EV_A_ (W)w, ++asynccnt); 3872 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3240 3899
3241void 3900void
3242ev_async_send (EV_P_ ev_async *w) 3901ev_async_send (EV_P_ ev_async *w)
3243{ 3902{
3244 w->sent = 1; 3903 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 3904 evpipe_write (EV_A_ &async_pending);
3246} 3905}
3247#endif 3906#endif
3248 3907
3249/*****************************************************************************/ 3908/*****************************************************************************/
3250 3909
… …
3290{ 3949{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 3951
3293 if (expect_false (!once)) 3952 if (expect_false (!once))
3294 { 3953 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 3955 return;
3297 } 3956 }
3298 3957
3299 once->cb = cb; 3958 once->cb = cb;
3300 once->arg = arg; 3959 once->arg = arg;
… …
3315} 3974}
3316 3975
3317/*****************************************************************************/ 3976/*****************************************************************************/
3318 3977
3319#if EV_WALK_ENABLE 3978#if EV_WALK_ENABLE
3320void 3979void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3322{ 3981{
3323 int i, j; 3982 int i, j;
3324 ev_watcher_list *wl, *wn; 3983 ev_watcher_list *wl, *wn;
3325 3984
… …
3387 if (types & EV_ASYNC) 4046 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4047 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4048 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4049#endif
3391 4050
4051#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4052 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4053 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4054# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4055 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4056# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4057 cb (EV_A_ EV_PREPARE, prepares [i]);
4058#endif
3398 4059
4060#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4061 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4062 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4063 cb (EV_A_ EV_CHECK, checks [i]);
4064#endif
3402 4065
4066#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4067 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4068 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4069 for (wl = signals [i].head; wl; )
3406 { 4070 {
3407 wn = wl->next; 4071 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4072 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4073 wl = wn;
3410 } 4074 }
4075#endif
3411 4076
4077#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4078 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4079 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4080 for (wl = childs [i]; wl; )
3415 { 4081 {
3416 wn = wl->next; 4082 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4083 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4084 wl = wn;
3419 } 4085 }
4086#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4087/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4088/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4089}
3423#endif 4090#endif
3424 4091
3425#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
3427#endif 4094#endif
3428 4095
3429#ifdef __cplusplus 4096EV_CPP(})
3430}
3431#endif
3432 4097

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