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Comparing libev/ev.c (file contents):
Revision 1.298 by root, Fri Jul 10 19:10:19 2009 UTC vs.
Revision 1.459 by root, Tue Oct 29 12:13:37 2013 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) 2007,2008,2009,2010,2011,2012 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
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
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"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247#endif
248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
251#endif
182 252
183#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 256# else
187# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
188# endif 258# endif
189#endif 259#endif
190 260
191#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 264# else
195# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
196# endif 266# endif
197#endif 267#endif
198 268
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 271#endif
202 272
203#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 276# else
207# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
208# endif 278# endif
209#endif 279#endif
210 280
211#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 283#endif
214 284
215#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
216# ifdef _WIN32 286# ifdef _WIN32
217# define EV_USE_POLL 0 287# define EV_USE_POLL 0
218# else 288# else
219# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 290# endif
221#endif 291#endif
222 292
223#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 296# else
227# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
228# endif 298# endif
229#endif 299#endif
230 300
… …
236# define EV_USE_PORT 0 306# define EV_USE_PORT 0
237#endif 307#endif
238 308
239#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 312# else
243# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
244# endif 314# endif
245#endif 315#endif
246 316
247#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 318# 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 319#endif
254 320
255#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 322# 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 323#endif
262 324
263#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 328# else
267# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
330# endif
331#endif
332
333#ifndef EV_USE_SIGNALFD
334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
335# define EV_USE_SIGNALFD EV_FEATURE_OS
336# else
337# define EV_USE_SIGNALFD 0
268# endif 338# endif
269#endif 339#endif
270 340
271#if 0 /* debugging */ 341#if 0 /* debugging */
272# define EV_VERIFY 3 342# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
275#endif 345#endif
276 346
277#ifndef EV_VERIFY 347#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 349#endif
280 350
281#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 353#endif
284 354
285#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif
358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
287#endif 373#endif
288 374
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* 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. */ 376/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 378# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
297# else 383# else
… …
316# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
318#endif 404#endif
319 405
320#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 409# include <sys/select.h>
323# endif 410# endif
324#endif 411#endif
325 412
326#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 414# include <sys/statfs.h>
329# include <sys/inotify.h> 415# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
334# endif 420# endif
335#endif 421#endif
336 422
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 425# include <stdint.h>
344# ifdef __cplusplus 426# ifndef EFD_NONBLOCK
345extern "C" { 427# define EFD_NONBLOCK O_NONBLOCK
346# endif 428# endif
347int eventfd (unsigned int initval, int flags); 429# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 430# ifdef O_CLOEXEC
349} 431# define EFD_CLOEXEC O_CLOEXEC
432# else
433# define EFD_CLOEXEC 02000000
434# endif
350# endif 435# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif
438
439#if EV_USE_SIGNALFD
440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
441# include <stdint.h>
442# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK
444# endif
445# ifndef SFD_CLOEXEC
446# ifdef O_CLOEXEC
447# define SFD_CLOEXEC O_CLOEXEC
448# else
449# define SFD_CLOEXEC 02000000
450# endif
451# endif
452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
453
454struct signalfd_siginfo
455{
456 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)];
458};
351#endif 459#endif
352 460
353/**/ 461/**/
354 462
355#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 465#else
358# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
359#endif 467#endif
360 468
361/* 469/*
362 * This is used to avoid floating point rounding problems. 470 * 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. 471 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 472 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 475
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#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) */ 477#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 */
374 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 */
512
513#ifndef ECB_H
514#define ECB_H
515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
519#ifdef _WIN32
520 typedef signed char int8_t;
521 typedef unsigned char uint8_t;
522 typedef signed short int16_t;
523 typedef unsigned short uint16_t;
524 typedef signed int int32_t;
525 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 526 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 528 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t;
532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
378#else 542#else
379# define expect(expr,value) (expr) 543 #include <inttypes.h>
380# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
382# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
383# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __x86_64 || _M_AMD64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
384#endif 557 #endif
558#endif
385 559
560/* many compilers define _GNUC_ to some versions but then only implement
561 * what their idiot authors think are the "more important" extensions,
562 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place.
566 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0
570 #else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif
573#endif
574
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
576#define ECB_C99 (__STDC_VERSION__ >= 199901L)
577#define ECB_C11 (__STDC_VERSION__ >= 201112L)
578#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L)
580
581#if ECB_CPP
582 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END }
585#else
586 #define ECB_EXTERN_C extern
587 #define ECB_EXTERN_C_BEG
588 #define ECB_EXTERN_C_END
589#endif
590
591/*****************************************************************************/
592
593/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
594/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
595
596#if ECB_NO_THREADS
597 #define ECB_NO_SMP 1
598#endif
599
600#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0)
602#endif
603
604#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
606 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif __sparc || __sparc__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
628 #elif defined __mips__
629 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
630 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
632 #elif defined __alpha__
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
634 #elif defined __hppa__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
636 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
637 #elif defined __ia64__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
639 #elif defined __m68k__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
641 #elif defined __m88k__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
643 #elif defined __sh__
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
645 #endif
646 #endif
647#endif
648
649#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
653
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model.
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */
662
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1400 /* VC++ 2005 */
666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
667 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
670 #elif defined _WIN32
671 #include <WinNT.h>
672 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
673 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
674 #include <mbarrier.h>
675 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
676 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
677 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
678 #elif __xlC__
679 #define ECB_MEMORY_FENCE __sync ()
680 #endif
681#endif
682
683#ifndef ECB_MEMORY_FENCE
684 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
685 /* we assume that these memory fences work on all variables/all memory accesses, */
686 /* not just C11 atomics and atomic accesses */
687 #include <stdatomic.h>
688 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
689 /* any fence other than seq_cst, which isn't very efficient for us. */
690 /* Why that is, we don't know - either the C11 memory model is quite useless */
691 /* for most usages, or gcc and clang have a bug */
692 /* I *currently* lean towards the latter, and inefficiently implement */
693 /* all three of ecb's fences as a seq_cst fence */
694 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
695 #endif
696#endif
697
698#ifndef ECB_MEMORY_FENCE
699 #if !ECB_AVOID_PTHREADS
700 /*
701 * if you get undefined symbol references to pthread_mutex_lock,
702 * or failure to find pthread.h, then you should implement
703 * the ECB_MEMORY_FENCE operations for your cpu/compiler
704 * OR provide pthread.h and link against the posix thread library
705 * of your system.
706 */
707 #include <pthread.h>
708 #define ECB_NEEDS_PTHREADS 1
709 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
710
711 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
712 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
713 #endif
714#endif
715
716#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
717 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
718#endif
719
720#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
721 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
722#endif
723
724/*****************************************************************************/
725
726#if __cplusplus
727 #define ecb_inline static inline
728#elif ECB_GCC_VERSION(2,5)
729 #define ecb_inline static __inline__
730#elif ECB_C99
731 #define ecb_inline static inline
732#else
733 #define ecb_inline static
734#endif
735
736#if ECB_GCC_VERSION(3,3)
737 #define ecb_restrict __restrict__
738#elif ECB_C99
739 #define ecb_restrict restrict
740#else
741 #define ecb_restrict
742#endif
743
744typedef int ecb_bool;
745
746#define ECB_CONCAT_(a, b) a ## b
747#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
748#define ECB_STRINGIFY_(a) # a
749#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
750
751#define ecb_function_ ecb_inline
752
753#if ECB_GCC_VERSION(3,1)
754 #define ecb_attribute(attrlist) __attribute__(attrlist)
755 #define ecb_is_constant(expr) __builtin_constant_p (expr)
756 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
757 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
758#else
759 #define ecb_attribute(attrlist)
760 #define ecb_is_constant(expr) 0
761 #define ecb_expect(expr,value) (expr)
762 #define ecb_prefetch(addr,rw,locality)
763#endif
764
765/* no emulation for ecb_decltype */
766#if ECB_GCC_VERSION(4,5)
767 #define ecb_decltype(x) __decltype(x)
768#elif ECB_GCC_VERSION(3,0)
769 #define ecb_decltype(x) __typeof(x)
770#endif
771
772#define ecb_noinline ecb_attribute ((__noinline__))
773#define ecb_unused ecb_attribute ((__unused__))
774#define ecb_const ecb_attribute ((__const__))
775#define ecb_pure ecb_attribute ((__pure__))
776
777#if ECB_C11
778 #define ecb_noreturn _Noreturn
779#else
780 #define ecb_noreturn ecb_attribute ((__noreturn__))
781#endif
782
783#if ECB_GCC_VERSION(4,3)
784 #define ecb_artificial ecb_attribute ((__artificial__))
785 #define ecb_hot ecb_attribute ((__hot__))
786 #define ecb_cold ecb_attribute ((__cold__))
787#else
788 #define ecb_artificial
789 #define ecb_hot
790 #define ecb_cold
791#endif
792
793/* put around conditional expressions if you are very sure that the */
794/* expression is mostly true or mostly false. note that these return */
795/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 796#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 797#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
798/* for compatibility to the rest of the world */
799#define ecb_likely(expr) ecb_expect_true (expr)
800#define ecb_unlikely(expr) ecb_expect_false (expr)
801
802/* count trailing zero bits and count # of one bits */
803#if ECB_GCC_VERSION(3,4)
804 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
805 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
806 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
807 #define ecb_ctz32(x) __builtin_ctz (x)
808 #define ecb_ctz64(x) __builtin_ctzll (x)
809 #define ecb_popcount32(x) __builtin_popcount (x)
810 /* no popcountll */
811#else
812 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
813 ecb_function_ int
814 ecb_ctz32 (uint32_t x)
815 {
816 int r = 0;
817
818 x &= ~x + 1; /* this isolates the lowest bit */
819
820#if ECB_branchless_on_i386
821 r += !!(x & 0xaaaaaaaa) << 0;
822 r += !!(x & 0xcccccccc) << 1;
823 r += !!(x & 0xf0f0f0f0) << 2;
824 r += !!(x & 0xff00ff00) << 3;
825 r += !!(x & 0xffff0000) << 4;
826#else
827 if (x & 0xaaaaaaaa) r += 1;
828 if (x & 0xcccccccc) r += 2;
829 if (x & 0xf0f0f0f0) r += 4;
830 if (x & 0xff00ff00) r += 8;
831 if (x & 0xffff0000) r += 16;
832#endif
833
834 return r;
835 }
836
837 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
838 ecb_function_ int
839 ecb_ctz64 (uint64_t x)
840 {
841 int shift = x & 0xffffffffU ? 0 : 32;
842 return ecb_ctz32 (x >> shift) + shift;
843 }
844
845 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
846 ecb_function_ int
847 ecb_popcount32 (uint32_t x)
848 {
849 x -= (x >> 1) & 0x55555555;
850 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
851 x = ((x >> 4) + x) & 0x0f0f0f0f;
852 x *= 0x01010101;
853
854 return x >> 24;
855 }
856
857 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
858 ecb_function_ int ecb_ld32 (uint32_t x)
859 {
860 int r = 0;
861
862 if (x >> 16) { x >>= 16; r += 16; }
863 if (x >> 8) { x >>= 8; r += 8; }
864 if (x >> 4) { x >>= 4; r += 4; }
865 if (x >> 2) { x >>= 2; r += 2; }
866 if (x >> 1) { r += 1; }
867
868 return r;
869 }
870
871 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
872 ecb_function_ int ecb_ld64 (uint64_t x)
873 {
874 int r = 0;
875
876 if (x >> 32) { x >>= 32; r += 32; }
877
878 return r + ecb_ld32 (x);
879 }
880#endif
881
882ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
883ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
884ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
885ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
886
887ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
888ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
889{
890 return ( (x * 0x0802U & 0x22110U)
891 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
892}
893
894ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
895ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
896{
897 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
898 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
899 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
900 x = ( x >> 8 ) | ( x << 8);
901
902 return x;
903}
904
905ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
906ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
907{
908 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
909 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
910 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
911 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
912 x = ( x >> 16 ) | ( x << 16);
913
914 return x;
915}
916
917/* popcount64 is only available on 64 bit cpus as gcc builtin */
918/* so for this version we are lazy */
919ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
920ecb_function_ int
921ecb_popcount64 (uint64_t x)
922{
923 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
924}
925
926ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
927ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
928ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
929ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
930ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
931ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
932ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
933ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
934
935ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
936ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
937ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
938ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
939ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
940ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
941ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
942ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
943
944#if ECB_GCC_VERSION(4,3)
945 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
946 #define ecb_bswap32(x) __builtin_bswap32 (x)
947 #define ecb_bswap64(x) __builtin_bswap64 (x)
948#else
949 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
950 ecb_function_ uint16_t
951 ecb_bswap16 (uint16_t x)
952 {
953 return ecb_rotl16 (x, 8);
954 }
955
956 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
957 ecb_function_ uint32_t
958 ecb_bswap32 (uint32_t x)
959 {
960 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
961 }
962
963 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
964 ecb_function_ uint64_t
965 ecb_bswap64 (uint64_t x)
966 {
967 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
968 }
969#endif
970
971#if ECB_GCC_VERSION(4,5)
972 #define ecb_unreachable() __builtin_unreachable ()
973#else
974 /* this seems to work fine, but gcc always emits a warning for it :/ */
975 ecb_inline void ecb_unreachable (void) ecb_noreturn;
976 ecb_inline void ecb_unreachable (void) { }
977#endif
978
979/* try to tell the compiler that some condition is definitely true */
980#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
981
982ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
983ecb_inline unsigned char
984ecb_byteorder_helper (void)
985{
986 /* the union code still generates code under pressure in gcc, */
987 /* but less than using pointers, and always seems to */
988 /* successfully return a constant. */
989 /* the reason why we have this horrible preprocessor mess */
990 /* is to avoid it in all cases, at least on common architectures */
991 /* or when using a recent enough gcc version (>= 4.6) */
992#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
993 return 0x44;
994#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
995 return 0x44;
996#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
997 return 0x11;
998#else
999 union
1000 {
1001 uint32_t i;
1002 uint8_t c;
1003 } u = { 0x11223344 };
1004 return u.c;
1005#endif
1006}
1007
1008ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1009ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1010ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1011ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1012
1013#if ECB_GCC_VERSION(3,0) || ECB_C99
1014 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1015#else
1016 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1017#endif
1018
1019#if __cplusplus
1020 template<typename T>
1021 static inline T ecb_div_rd (T val, T div)
1022 {
1023 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1024 }
1025 template<typename T>
1026 static inline T ecb_div_ru (T val, T div)
1027 {
1028 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1029 }
1030#else
1031 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1032 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1033#endif
1034
1035#if ecb_cplusplus_does_not_suck
1036 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1037 template<typename T, int N>
1038 static inline int ecb_array_length (const T (&arr)[N])
1039 {
1040 return N;
1041 }
1042#else
1043 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1044#endif
1045
1046/*******************************************************************************/
1047/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1048
1049/* basically, everything uses "ieee pure-endian" floating point numbers */
1050/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1051#if 0 \
1052 || __i386 || __i386__ \
1053 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1054 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1055 || defined __arm__ && defined __ARM_EABI__ \
1056 || defined __s390__ || defined __s390x__ \
1057 || defined __mips__ \
1058 || defined __alpha__ \
1059 || defined __hppa__ \
1060 || defined __ia64__ \
1061 || defined __m68k__ \
1062 || defined __m88k__ \
1063 || defined __sh__ \
1064 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1065 #define ECB_STDFP 1
1066 #include <string.h> /* for memcpy */
1067#else
1068 #define ECB_STDFP 0
1069#endif
1070
1071#ifndef ECB_NO_LIBM
1072
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074
1075 #ifdef NEN
1076 #define ECB_NAN NAN
1077 #else
1078 #define ECB_NAN INFINITY
1079 #endif
1080
1081 /* converts an ieee half/binary16 to a float */
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1083 ecb_function_ float
1084 ecb_binary16_to_float (uint16_t x)
1085 {
1086 int e = (x >> 10) & 0x1f;
1087 int m = x & 0x3ff;
1088 float r;
1089
1090 if (!e ) r = ldexpf (m , -24);
1091 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1092 else if (m ) r = ECB_NAN;
1093 else r = INFINITY;
1094
1095 return x & 0x8000 ? -r : r;
1096 }
1097
1098 /* convert a float to ieee single/binary32 */
1099 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1100 ecb_function_ uint32_t
1101 ecb_float_to_binary32 (float x)
1102 {
1103 uint32_t r;
1104
1105 #if ECB_STDFP
1106 memcpy (&r, &x, 4);
1107 #else
1108 /* slow emulation, works for anything but -0 */
1109 uint32_t m;
1110 int e;
1111
1112 if (x == 0e0f ) return 0x00000000U;
1113 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1114 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1115 if (x != x ) return 0x7fbfffffU;
1116
1117 m = frexpf (x, &e) * 0x1000000U;
1118
1119 r = m & 0x80000000U;
1120
1121 if (r)
1122 m = -m;
1123
1124 if (e <= -126)
1125 {
1126 m &= 0xffffffU;
1127 m >>= (-125 - e);
1128 e = -126;
1129 }
1130
1131 r |= (e + 126) << 23;
1132 r |= m & 0x7fffffU;
1133 #endif
1134
1135 return r;
1136 }
1137
1138 /* converts an ieee single/binary32 to a float */
1139 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1140 ecb_function_ float
1141 ecb_binary32_to_float (uint32_t x)
1142 {
1143 float r;
1144
1145 #if ECB_STDFP
1146 memcpy (&r, &x, 4);
1147 #else
1148 /* emulation, only works for normals and subnormals and +0 */
1149 int neg = x >> 31;
1150 int e = (x >> 23) & 0xffU;
1151
1152 x &= 0x7fffffU;
1153
1154 if (e)
1155 x |= 0x800000U;
1156 else
1157 e = 1;
1158
1159 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1160 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1161
1162 r = neg ? -r : r;
1163 #endif
1164
1165 return r;
1166 }
1167
1168 /* convert a double to ieee double/binary64 */
1169 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1170 ecb_function_ uint64_t
1171 ecb_double_to_binary64 (double x)
1172 {
1173 uint64_t r;
1174
1175 #if ECB_STDFP
1176 memcpy (&r, &x, 8);
1177 #else
1178 /* slow emulation, works for anything but -0 */
1179 uint64_t m;
1180 int e;
1181
1182 if (x == 0e0 ) return 0x0000000000000000U;
1183 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1184 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1185 if (x != x ) return 0X7ff7ffffffffffffU;
1186
1187 m = frexp (x, &e) * 0x20000000000000U;
1188
1189 r = m & 0x8000000000000000;;
1190
1191 if (r)
1192 m = -m;
1193
1194 if (e <= -1022)
1195 {
1196 m &= 0x1fffffffffffffU;
1197 m >>= (-1021 - e);
1198 e = -1022;
1199 }
1200
1201 r |= ((uint64_t)(e + 1022)) << 52;
1202 r |= m & 0xfffffffffffffU;
1203 #endif
1204
1205 return r;
1206 }
1207
1208 /* converts an ieee double/binary64 to a double */
1209 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1210 ecb_function_ double
1211 ecb_binary64_to_double (uint64_t x)
1212 {
1213 double r;
1214
1215 #if ECB_STDFP
1216 memcpy (&r, &x, 8);
1217 #else
1218 /* emulation, only works for normals and subnormals and +0 */
1219 int neg = x >> 63;
1220 int e = (x >> 52) & 0x7ffU;
1221
1222 x &= 0xfffffffffffffU;
1223
1224 if (e)
1225 x |= 0x10000000000000U;
1226 else
1227 e = 1;
1228
1229 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1230 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1231
1232 r = neg ? -r : r;
1233 #endif
1234
1235 return r;
1236 }
1237
1238#endif
1239
1240#endif
1241
1242/* ECB.H END */
1243
1244#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1245/* if your architecture doesn't need memory fences, e.g. because it is
1246 * single-cpu/core, or if you use libev in a project that doesn't use libev
1247 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1248 * libev, in which cases the memory fences become nops.
1249 * alternatively, you can remove this #error and link against libpthread,
1250 * which will then provide the memory fences.
1251 */
1252# error "memory fences not defined for your architecture, please report"
1253#endif
1254
1255#ifndef ECB_MEMORY_FENCE
1256# define ECB_MEMORY_FENCE do { } while (0)
1257# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1258# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1259#endif
1260
1261#define expect_false(cond) ecb_expect_false (cond)
1262#define expect_true(cond) ecb_expect_true (cond)
1263#define noinline ecb_noinline
1264
388#define inline_size static inline 1265#define inline_size ecb_inline
389 1266
390#if EV_MINIMAL 1267#if EV_FEATURE_CODE
1268# define inline_speed ecb_inline
1269#else
391# define inline_speed static noinline 1270# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 1271#endif
395 1272
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1273#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1274
398#if EV_MINPRI == EV_MAXPRI 1275#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 1288#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1289#define ev_at(w) ((WT)(w))->at
413 1290
414#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1292/* 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 */ 1293/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1294static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1295#endif
419 1296
420#if EV_USE_MONOTONIC 1297#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1298static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1299#endif
423 1300
1301#ifndef EV_FD_TO_WIN32_HANDLE
1302# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1303#endif
1304#ifndef EV_WIN32_HANDLE_TO_FD
1305# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1306#endif
1307#ifndef EV_WIN32_CLOSE_FD
1308# define EV_WIN32_CLOSE_FD(fd) close (fd)
1309#endif
1310
424#ifdef _WIN32 1311#ifdef _WIN32
425# include "ev_win32.c" 1312# include "ev_win32.c"
426#endif 1313#endif
427 1314
428/*****************************************************************************/ 1315/*****************************************************************************/
429 1316
1317/* define a suitable floor function (only used by periodics atm) */
1318
1319#if EV_USE_FLOOR
1320# include <math.h>
1321# define ev_floor(v) floor (v)
1322#else
1323
1324#include <float.h>
1325
1326/* a floor() replacement function, should be independent of ev_tstamp type */
1327static ev_tstamp noinline
1328ev_floor (ev_tstamp v)
1329{
1330 /* the choice of shift factor is not terribly important */
1331#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1332 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1333#else
1334 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1335#endif
1336
1337 /* argument too large for an unsigned long? */
1338 if (expect_false (v >= shift))
1339 {
1340 ev_tstamp f;
1341
1342 if (v == v - 1.)
1343 return v; /* very large number */
1344
1345 f = shift * ev_floor (v * (1. / shift));
1346 return f + ev_floor (v - f);
1347 }
1348
1349 /* special treatment for negative args? */
1350 if (expect_false (v < 0.))
1351 {
1352 ev_tstamp f = -ev_floor (-v);
1353
1354 return f - (f == v ? 0 : 1);
1355 }
1356
1357 /* fits into an unsigned long */
1358 return (unsigned long)v;
1359}
1360
1361#endif
1362
1363/*****************************************************************************/
1364
1365#ifdef __linux
1366# include <sys/utsname.h>
1367#endif
1368
1369static unsigned int noinline ecb_cold
1370ev_linux_version (void)
1371{
1372#ifdef __linux
1373 unsigned int v = 0;
1374 struct utsname buf;
1375 int i;
1376 char *p = buf.release;
1377
1378 if (uname (&buf))
1379 return 0;
1380
1381 for (i = 3+1; --i; )
1382 {
1383 unsigned int c = 0;
1384
1385 for (;;)
1386 {
1387 if (*p >= '0' && *p <= '9')
1388 c = c * 10 + *p++ - '0';
1389 else
1390 {
1391 p += *p == '.';
1392 break;
1393 }
1394 }
1395
1396 v = (v << 8) | c;
1397 }
1398
1399 return v;
1400#else
1401 return 0;
1402#endif
1403}
1404
1405/*****************************************************************************/
1406
1407#if EV_AVOID_STDIO
1408static void noinline ecb_cold
1409ev_printerr (const char *msg)
1410{
1411 write (STDERR_FILENO, msg, strlen (msg));
1412}
1413#endif
1414
430static void (*syserr_cb)(const char *msg); 1415static void (*syserr_cb)(const char *msg) EV_THROW;
431 1416
432void 1417void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1418ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1419{
435 syserr_cb = cb; 1420 syserr_cb = cb;
436} 1421}
437 1422
438static void noinline 1423static void noinline ecb_cold
439ev_syserr (const char *msg) 1424ev_syserr (const char *msg)
440{ 1425{
441 if (!msg) 1426 if (!msg)
442 msg = "(libev) system error"; 1427 msg = "(libev) system error";
443 1428
444 if (syserr_cb) 1429 if (syserr_cb)
445 syserr_cb (msg); 1430 syserr_cb (msg);
446 else 1431 else
447 { 1432 {
1433#if EV_AVOID_STDIO
1434 ev_printerr (msg);
1435 ev_printerr (": ");
1436 ev_printerr (strerror (errno));
1437 ev_printerr ("\n");
1438#else
448 perror (msg); 1439 perror (msg);
1440#endif
449 abort (); 1441 abort ();
450 } 1442 }
451} 1443}
452 1444
453static void * 1445static void *
454ev_realloc_emul (void *ptr, long size) 1446ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1447{
456 /* some systems, notably openbsd and darwin, fail to properly 1448 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1449 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1450 * the single unix specification, so work around them here.
1451 * recently, also (at least) fedora and debian started breaking it,
1452 * despite documenting it otherwise.
459 */ 1453 */
460 1454
461 if (size) 1455 if (size)
462 return realloc (ptr, size); 1456 return realloc (ptr, size);
463 1457
464 free (ptr); 1458 free (ptr);
465 return 0; 1459 return 0;
466} 1460}
467 1461
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1462static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1463
470void 1464void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1465ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1466{
473 alloc = cb; 1467 alloc = cb;
474} 1468}
475 1469
476inline_speed void * 1470inline_speed void *
… …
478{ 1472{
479 ptr = alloc (ptr, size); 1473 ptr = alloc (ptr, size);
480 1474
481 if (!ptr && size) 1475 if (!ptr && size)
482 { 1476 {
1477#if EV_AVOID_STDIO
1478 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1479#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1480 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1481#endif
484 abort (); 1482 abort ();
485 } 1483 }
486 1484
487 return ptr; 1485 return ptr;
488} 1486}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1502 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1503 unsigned char unused;
506#if EV_USE_EPOLL 1504#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1505 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1506#endif
509#if EV_SELECT_IS_WINSOCKET 1507#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1508 SOCKET handle;
1509#endif
1510#if EV_USE_IOCP
1511 OVERLAPPED or, ow;
511#endif 1512#endif
512} ANFD; 1513} ANFD;
513 1514
514/* stores the pending event set for a given watcher */ 1515/* stores the pending event set for a given watcher */
515typedef struct 1516typedef struct
… …
557 #undef VAR 1558 #undef VAR
558 }; 1559 };
559 #include "ev_wrap.h" 1560 #include "ev_wrap.h"
560 1561
561 static struct ev_loop default_loop_struct; 1562 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1563 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1564
564#else 1565#else
565 1566
566 ev_tstamp ev_rt_now; 1567 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1568 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1569 #include "ev_vars.h"
569 #undef VAR 1570 #undef VAR
570 1571
571 static int ev_default_loop_ptr; 1572 static int ev_default_loop_ptr;
572 1573
573#endif 1574#endif
574 1575
575#if EV_MINIMAL < 2 1576#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1577# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1578# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1579# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1580#else
580# define EV_RELEASE_CB (void)0 1581# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1582# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1583# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1584#endif
584 1585
585#define EVUNLOOP_RECURSE 0x80 1586#define EVBREAK_RECURSE 0x80
586 1587
587/*****************************************************************************/ 1588/*****************************************************************************/
588 1589
589#ifndef EV_HAVE_EV_TIME 1590#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1591ev_tstamp
591ev_time (void) 1592ev_time (void) EV_THROW
592{ 1593{
593#if EV_USE_REALTIME 1594#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1595 if (expect_true (have_realtime))
595 { 1596 {
596 struct timespec ts; 1597 struct timespec ts;
… …
620 return ev_time (); 1621 return ev_time ();
621} 1622}
622 1623
623#if EV_MULTIPLICITY 1624#if EV_MULTIPLICITY
624ev_tstamp 1625ev_tstamp
625ev_now (EV_P) 1626ev_now (EV_P) EV_THROW
626{ 1627{
627 return ev_rt_now; 1628 return ev_rt_now;
628} 1629}
629#endif 1630#endif
630 1631
631void 1632void
632ev_sleep (ev_tstamp delay) 1633ev_sleep (ev_tstamp delay) EV_THROW
633{ 1634{
634 if (delay > 0.) 1635 if (delay > 0.)
635 { 1636 {
636#if EV_USE_NANOSLEEP 1637#if EV_USE_NANOSLEEP
637 struct timespec ts; 1638 struct timespec ts;
638 1639
639 ts.tv_sec = (time_t)delay; 1640 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1641 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1642#elif defined _WIN32
644 Sleep ((unsigned long)(delay * 1e3)); 1643 Sleep ((unsigned long)(delay * 1e3));
645#else 1644#else
646 struct timeval tv; 1645 struct timeval tv;
647 1646
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1647 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1648 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1649 /* by older ones */
1650 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1651 select (0, 0, 0, 0, &tv);
655#endif 1652#endif
656 } 1653 }
657} 1654}
658 1655
659/*****************************************************************************/ 1656/*****************************************************************************/
660 1657
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1658#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1659
663/* find a suitable new size for the given array, */ 1660/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1661/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1662inline_size int
666array_nextsize (int elem, int cur, int cnt) 1663array_nextsize (int elem, int cur, int cnt)
667{ 1664{
668 int ncur = cur + 1; 1665 int ncur = cur + 1;
669 1666
670 do 1667 do
671 ncur <<= 1; 1668 ncur <<= 1;
672 while (cnt > ncur); 1669 while (cnt > ncur);
673 1670
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1671 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1672 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1673 {
677 ncur *= elem; 1674 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1675 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1676 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1678 }
682 1679
683 return ncur; 1680 return ncur;
684} 1681}
685 1682
686static noinline void * 1683static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1684array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1685{
689 *cur = array_nextsize (elem, *cur, cnt); 1686 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1687 return ev_realloc (base, elem * *cur);
691} 1688}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1691 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1692
696#define array_needsize(type,base,cur,cnt,init) \ 1693#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1694 if (expect_false ((cnt) > (cur))) \
698 { \ 1695 { \
699 int ocur_ = (cur); \ 1696 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1697 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1698 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1699 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1700 }
704 1701
… …
722pendingcb (EV_P_ ev_prepare *w, int revents) 1719pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 1720{
724} 1721}
725 1722
726void noinline 1723void noinline
727ev_feed_event (EV_P_ void *w, int revents) 1724ev_feed_event (EV_P_ void *w, int revents) EV_THROW
728{ 1725{
729 W w_ = (W)w; 1726 W w_ = (W)w;
730 int pri = ABSPRI (w_); 1727 int pri = ABSPRI (w_);
731 1728
732 if (expect_false (w_->pending)) 1729 if (expect_false (w_->pending))
… …
736 w_->pending = ++pendingcnt [pri]; 1733 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1734 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
738 pendings [pri][w_->pending - 1].w = w_; 1735 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 1736 pendings [pri][w_->pending - 1].events = revents;
740 } 1737 }
1738
1739 pendingpri = NUMPRI - 1;
741} 1740}
742 1741
743inline_speed void 1742inline_speed void
744feed_reverse (EV_P_ W w) 1743feed_reverse (EV_P_ W w)
745{ 1744{
… …
765} 1764}
766 1765
767/*****************************************************************************/ 1766/*****************************************************************************/
768 1767
769inline_speed void 1768inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1769fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1770{
772 ANFD *anfd = anfds + fd; 1771 ANFD *anfd = anfds + fd;
773 ev_io *w; 1772 ev_io *w;
774 1773
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1774 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1786fd_event (EV_P_ int fd, int revents)
788{ 1787{
789 ANFD *anfd = anfds + fd; 1788 ANFD *anfd = anfds + fd;
790 1789
791 if (expect_true (!anfd->reify)) 1790 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1791 fd_event_nocheck (EV_A_ fd, revents);
793} 1792}
794 1793
795void 1794void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1795ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
797{ 1796{
798 if (fd >= 0 && fd < anfdmax) 1797 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1798 fd_event_nocheck (EV_A_ fd, revents);
800} 1799}
801 1800
802/* make sure the external fd watch events are in-sync */ 1801/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1802/* with the kernel/libev internal state */
804inline_size void 1803inline_size void
805fd_reify (EV_P) 1804fd_reify (EV_P)
806{ 1805{
807 int i; 1806 int i;
808 1807
1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1809 for (i = 0; i < fdchangecnt; ++i)
1810 {
1811 int fd = fdchanges [i];
1812 ANFD *anfd = anfds + fd;
1813
1814 if (anfd->reify & EV__IOFDSET && anfd->head)
1815 {
1816 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1817
1818 if (handle != anfd->handle)
1819 {
1820 unsigned long arg;
1821
1822 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1823
1824 /* handle changed, but fd didn't - we need to do it in two steps */
1825 backend_modify (EV_A_ fd, anfd->events, 0);
1826 anfd->events = 0;
1827 anfd->handle = handle;
1828 }
1829 }
1830 }
1831#endif
1832
809 for (i = 0; i < fdchangecnt; ++i) 1833 for (i = 0; i < fdchangecnt; ++i)
810 { 1834 {
811 int fd = fdchanges [i]; 1835 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1836 ANFD *anfd = anfds + fd;
813 ev_io *w; 1837 ev_io *w;
814 1838
815 unsigned char events = 0; 1839 unsigned char o_events = anfd->events;
1840 unsigned char o_reify = anfd->reify;
816 1841
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1842 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1843
820#if EV_SELECT_IS_WINSOCKET 1844 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1845 {
823 unsigned long arg; 1846 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1847
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1848 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1849 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1850
828 #endif 1851 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1852 o_reify = EV__IOFDSET; /* actually |= */
830 } 1853 }
831#endif
832 1854
833 { 1855 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1856 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1857 }
844 1858
845 fdchangecnt = 0; 1859 fdchangecnt = 0;
846} 1860}
847 1861
… …
859 fdchanges [fdchangecnt - 1] = fd; 1873 fdchanges [fdchangecnt - 1] = fd;
860 } 1874 }
861} 1875}
862 1876
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1877/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1878inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1879fd_kill (EV_P_ int fd)
866{ 1880{
867 ev_io *w; 1881 ev_io *w;
868 1882
869 while ((w = (ev_io *)anfds [fd].head)) 1883 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1885 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1886 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1887 }
874} 1888}
875 1889
876/* check whether the given fd is atcually valid, for error recovery */ 1890/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1891inline_size int ecb_cold
878fd_valid (int fd) 1892fd_valid (int fd)
879{ 1893{
880#ifdef _WIN32 1894#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1895 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1896#else
883 return fcntl (fd, F_GETFD) != -1; 1897 return fcntl (fd, F_GETFD) != -1;
884#endif 1898#endif
885} 1899}
886 1900
887/* called on EBADF to verify fds */ 1901/* called on EBADF to verify fds */
888static void noinline 1902static void noinline ecb_cold
889fd_ebadf (EV_P) 1903fd_ebadf (EV_P)
890{ 1904{
891 int fd; 1905 int fd;
892 1906
893 for (fd = 0; fd < anfdmax; ++fd) 1907 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1909 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1910 fd_kill (EV_A_ fd);
897} 1911}
898 1912
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1913/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1914static void noinline ecb_cold
901fd_enomem (EV_P) 1915fd_enomem (EV_P)
902{ 1916{
903 int fd; 1917 int fd;
904 1918
905 for (fd = anfdmax; fd--; ) 1919 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1920 if (anfds [fd].events)
907 { 1921 {
908 fd_kill (EV_A_ fd); 1922 fd_kill (EV_A_ fd);
909 return; 1923 break;
910 } 1924 }
911} 1925}
912 1926
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1927/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1928static void noinline
… …
923 anfds [fd].emask = 0; 1937 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1938 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1939 }
926} 1940}
927 1941
1942/* used to prepare libev internal fd's */
1943/* this is not fork-safe */
1944inline_speed void
1945fd_intern (int fd)
1946{
1947#ifdef _WIN32
1948 unsigned long arg = 1;
1949 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1950#else
1951 fcntl (fd, F_SETFD, FD_CLOEXEC);
1952 fcntl (fd, F_SETFL, O_NONBLOCK);
1953#endif
1954}
1955
928/*****************************************************************************/ 1956/*****************************************************************************/
929 1957
930/* 1958/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1959 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1960 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1961 * the branching factor of the d-tree.
934 */ 1962 */
935 1963
936/* 1964/*
… …
1004 2032
1005 for (;;) 2033 for (;;)
1006 { 2034 {
1007 int c = k << 1; 2035 int c = k << 1;
1008 2036
1009 if (c > N + HEAP0 - 1) 2037 if (c >= N + HEAP0)
1010 break; 2038 break;
1011 2039
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2040 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 2041 ? 1 : 0;
1014 2042
… …
1050 2078
1051/* move an element suitably so it is in a correct place */ 2079/* move an element suitably so it is in a correct place */
1052inline_size void 2080inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2081adjustheap (ANHE *heap, int N, int k)
1054{ 2082{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2083 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2084 upheap (heap, k);
1057 else 2085 else
1058 downheap (heap, N, k); 2086 downheap (heap, N, k);
1059} 2087}
1060 2088
… …
1073/*****************************************************************************/ 2101/*****************************************************************************/
1074 2102
1075/* associate signal watchers to a signal signal */ 2103/* associate signal watchers to a signal signal */
1076typedef struct 2104typedef struct
1077{ 2105{
2106 EV_ATOMIC_T pending;
2107#if EV_MULTIPLICITY
2108 EV_P;
2109#endif
1078 WL head; 2110 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2111} ANSIG;
1081 2112
1082static ANSIG *signals; 2113static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2114
1087/*****************************************************************************/ 2115/*****************************************************************************/
1088 2116
1089/* used to prepare libev internal fd's */ 2117#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2118
2119static void noinline ecb_cold
2120evpipe_init (EV_P)
2121{
2122 if (!ev_is_active (&pipe_w))
2123 {
2124 int fds [2];
2125
2126# if EV_USE_EVENTFD
2127 fds [0] = -1;
2128 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2129 if (fds [1] < 0 && errno == EINVAL)
2130 fds [1] = eventfd (0, 0);
2131
2132 if (fds [1] < 0)
2133# endif
2134 {
2135 while (pipe (fds))
2136 ev_syserr ("(libev) error creating signal/async pipe");
2137
2138 fd_intern (fds [0]);
2139 }
2140
2141 evpipe [0] = fds [0];
2142
2143 if (evpipe [1] < 0)
2144 evpipe [1] = fds [1]; /* first call, set write fd */
2145 else
2146 {
2147 /* on subsequent calls, do not change evpipe [1] */
2148 /* so that evpipe_write can always rely on its value. */
2149 /* this branch does not do anything sensible on windows, */
2150 /* so must not be executed on windows */
2151
2152 dup2 (fds [1], evpipe [1]);
2153 close (fds [1]);
2154 }
2155
2156 fd_intern (evpipe [1]);
2157
2158 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2159 ev_io_start (EV_A_ &pipe_w);
2160 ev_unref (EV_A); /* watcher should not keep loop alive */
2161 }
2162}
2163
1091inline_speed void 2164inline_speed void
1092fd_intern (int fd) 2165evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2166{
1094#ifdef _WIN32 2167 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2168
1103static void noinline 2169 if (expect_true (*flag))
1104evpipe_init (EV_P) 2170 return;
1105{ 2171
1106 if (!ev_is_active (&pipe_w)) 2172 *flag = 1;
2173 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2174
2175 pipe_write_skipped = 1;
2176
2177 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2178
2179 if (pipe_write_wanted)
1107 { 2180 {
2181 int old_errno;
2182
2183 pipe_write_skipped = 0;
2184 ECB_MEMORY_FENCE_RELEASE;
2185
2186 old_errno = errno; /* save errno because write will clobber it */
2187
1108#if EV_USE_EVENTFD 2188#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2189 if (evpipe [0] < 0)
1110 { 2190 {
1111 evpipe [0] = -1; 2191 uint64_t counter = 1;
1112 fd_intern (evfd); 2192 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2193 }
1115 else 2194 else
1116#endif 2195#endif
1117 { 2196 {
1118 while (pipe (evpipe)) 2197#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2198 WSABUF buf;
1120 2199 DWORD sent;
1121 fd_intern (evpipe [0]); 2200 buf.buf = &buf;
1122 fd_intern (evpipe [1]); 2201 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2202 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2203#else
2204 write (evpipe [1], &(evpipe [1]), 1);
2205#endif
1124 } 2206 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2207
1150 errno = old_errno; 2208 errno = old_errno;
1151 } 2209 }
1152} 2210}
1153 2211
1154/* called whenever the libev signal pipe */ 2212/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2213/* got some events (signal, async) */
1156static void 2214static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2215pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2216{
2217 int i;
2218
2219 if (revents & EV_READ)
2220 {
1159#if EV_USE_EVENTFD 2221#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2222 if (evpipe [0] < 0)
1161 { 2223 {
1162 uint64_t counter; 2224 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2225 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2226 }
1165 else 2227 else
1166#endif 2228#endif
1167 { 2229 {
1168 char dummy; 2230 char dummy[4];
2231#ifdef _WIN32
2232 WSABUF buf;
2233 DWORD recvd;
2234 DWORD flags = 0;
2235 buf.buf = dummy;
2236 buf.len = sizeof (dummy);
2237 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2238#else
1169 read (evpipe [0], &dummy, 1); 2239 read (evpipe [0], &dummy, sizeof (dummy));
2240#endif
2241 }
2242 }
2243
2244 pipe_write_skipped = 0;
2245
2246 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2247
2248#if EV_SIGNAL_ENABLE
2249 if (sig_pending)
1170 } 2250 {
2251 sig_pending = 0;
1171 2252
1172 if (gotsig && ev_is_default_loop (EV_A)) 2253 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2254
1177 for (signum = signalmax; signum--; ) 2255 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2256 if (expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2257 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2258 }
2259#endif
1181 2260
1182#if EV_ASYNC_ENABLE 2261#if EV_ASYNC_ENABLE
1183 if (gotasync) 2262 if (async_pending)
1184 { 2263 {
1185 int i; 2264 async_pending = 0;
1186 gotasync = 0; 2265
2266 ECB_MEMORY_FENCE;
1187 2267
1188 for (i = asynccnt; i--; ) 2268 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2269 if (asyncs [i]->sent)
1190 { 2270 {
1191 asyncs [i]->sent = 0; 2271 asyncs [i]->sent = 0;
2272 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2273 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2274 }
1194 } 2275 }
1195#endif 2276#endif
1196} 2277}
1197 2278
1198/*****************************************************************************/ 2279/*****************************************************************************/
1199 2280
2281void
2282ev_feed_signal (int signum) EV_THROW
2283{
2284#if EV_MULTIPLICITY
2285 EV_P;
2286 ECB_MEMORY_FENCE_ACQUIRE;
2287 EV_A = signals [signum - 1].loop;
2288
2289 if (!EV_A)
2290 return;
2291#endif
2292
2293 signals [signum - 1].pending = 1;
2294 evpipe_write (EV_A_ &sig_pending);
2295}
2296
1200static void 2297static void
1201ev_sighandler (int signum) 2298ev_sighandler (int signum)
1202{ 2299{
2300#ifdef _WIN32
2301 signal (signum, ev_sighandler);
2302#endif
2303
2304 ev_feed_signal (signum);
2305}
2306
2307void noinline
2308ev_feed_signal_event (EV_P_ int signum) EV_THROW
2309{
2310 WL w;
2311
2312 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2313 return;
2314
2315 --signum;
2316
1203#if EV_MULTIPLICITY 2317#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2318 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2319 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2320
1207#if _WIN32 2321 if (expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2322 return;
2323#endif
1228 2324
1229 signals [signum].gotsig = 0; 2325 signals [signum].pending = 0;
2326 ECB_MEMORY_FENCE_RELEASE;
1230 2327
1231 for (w = signals [signum].head; w; w = w->next) 2328 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2329 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2330}
1234 2331
2332#if EV_USE_SIGNALFD
2333static void
2334sigfdcb (EV_P_ ev_io *iow, int revents)
2335{
2336 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2337
2338 for (;;)
2339 {
2340 ssize_t res = read (sigfd, si, sizeof (si));
2341
2342 /* not ISO-C, as res might be -1, but works with SuS */
2343 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2344 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2345
2346 if (res < (ssize_t)sizeof (si))
2347 break;
2348 }
2349}
2350#endif
2351
2352#endif
2353
1235/*****************************************************************************/ 2354/*****************************************************************************/
1236 2355
2356#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2357static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2358
1241static ev_signal childev; 2359static ev_signal childev;
1242 2360
1243#ifndef WIFCONTINUED 2361#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2362# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2367child_reap (EV_P_ int chain, int pid, int status)
1250{ 2368{
1251 ev_child *w; 2369 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2370 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2371
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2372 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2373 {
1256 if ((w->pid == pid || !w->pid) 2374 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2375 && (!traced || (w->flags & 1)))
1258 { 2376 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2377 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2402 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2403 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2404 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2405
1288 child_reap (EV_A_ pid, pid, status); 2406 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2407 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2408 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2409}
1292 2410
1293#endif 2411#endif
1294 2412
1295/*****************************************************************************/ 2413/*****************************************************************************/
1296 2414
2415#if EV_USE_IOCP
2416# include "ev_iocp.c"
2417#endif
1297#if EV_USE_PORT 2418#if EV_USE_PORT
1298# include "ev_port.c" 2419# include "ev_port.c"
1299#endif 2420#endif
1300#if EV_USE_KQUEUE 2421#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2422# include "ev_kqueue.c"
… …
1308#endif 2429#endif
1309#if EV_USE_SELECT 2430#if EV_USE_SELECT
1310# include "ev_select.c" 2431# include "ev_select.c"
1311#endif 2432#endif
1312 2433
1313int 2434int ecb_cold
1314ev_version_major (void) 2435ev_version_major (void) EV_THROW
1315{ 2436{
1316 return EV_VERSION_MAJOR; 2437 return EV_VERSION_MAJOR;
1317} 2438}
1318 2439
1319int 2440int ecb_cold
1320ev_version_minor (void) 2441ev_version_minor (void) EV_THROW
1321{ 2442{
1322 return EV_VERSION_MINOR; 2443 return EV_VERSION_MINOR;
1323} 2444}
1324 2445
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2446/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2447int inline_size ecb_cold
1327enable_secure (void) 2448enable_secure (void)
1328{ 2449{
1329#ifdef _WIN32 2450#ifdef _WIN32
1330 return 0; 2451 return 0;
1331#else 2452#else
1332 return getuid () != geteuid () 2453 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2454 || getgid () != getegid ();
1334#endif 2455#endif
1335} 2456}
1336 2457
1337unsigned int 2458unsigned int ecb_cold
1338ev_supported_backends (void) 2459ev_supported_backends (void) EV_THROW
1339{ 2460{
1340 unsigned int flags = 0; 2461 unsigned int flags = 0;
1341 2462
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2463 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2464 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2467 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2468
1348 return flags; 2469 return flags;
1349} 2470}
1350 2471
1351unsigned int 2472unsigned int ecb_cold
1352ev_recommended_backends (void) 2473ev_recommended_backends (void) EV_THROW
1353{ 2474{
1354 unsigned int flags = ev_supported_backends (); 2475 unsigned int flags = ev_supported_backends ();
1355 2476
1356#ifndef __NetBSD__ 2477#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2478 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2482#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2483 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2484 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2485 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2486#endif
2487#ifdef __FreeBSD__
2488 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2489#endif
1366 2490
1367 return flags; 2491 return flags;
1368} 2492}
1369 2493
2494unsigned int ecb_cold
2495ev_embeddable_backends (void) EV_THROW
2496{
2497 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2498
2499 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2500 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2501 flags &= ~EVBACKEND_EPOLL;
2502
2503 return flags;
2504}
2505
1370unsigned int 2506unsigned int
1371ev_embeddable_backends (void) 2507ev_backend (EV_P) EV_THROW
1372{ 2508{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2509 return backend;
1374
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */
1377 flags &= ~EVBACKEND_EPOLL;
1378
1379 return flags;
1380} 2510}
1381 2511
2512#if EV_FEATURE_API
1382unsigned int 2513unsigned int
1383ev_backend (EV_P) 2514ev_iteration (EV_P) EV_THROW
1384{ 2515{
1385 return backend; 2516 return loop_count;
1386} 2517}
1387 2518
1388#if EV_MINIMAL < 2
1389unsigned int 2519unsigned int
1390ev_loop_count (EV_P) 2520ev_depth (EV_P) EV_THROW
1391{
1392 return loop_count;
1393}
1394
1395unsigned int
1396ev_loop_depth (EV_P)
1397{ 2521{
1398 return loop_depth; 2522 return loop_depth;
1399} 2523}
1400 2524
1401void 2525void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2526ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1403{ 2527{
1404 io_blocktime = interval; 2528 io_blocktime = interval;
1405} 2529}
1406 2530
1407void 2531void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2532ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1409{ 2533{
1410 timeout_blocktime = interval; 2534 timeout_blocktime = interval;
1411} 2535}
1412 2536
1413void 2537void
1414ev_set_userdata (EV_P_ void *data) 2538ev_set_userdata (EV_P_ void *data) EV_THROW
1415{ 2539{
1416 userdata = data; 2540 userdata = data;
1417} 2541}
1418 2542
1419void * 2543void *
1420ev_userdata (EV_P) 2544ev_userdata (EV_P) EV_THROW
1421{ 2545{
1422 return userdata; 2546 return userdata;
1423} 2547}
1424 2548
2549void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2550ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1426{ 2551{
1427 invoke_cb = invoke_pending_cb; 2552 invoke_cb = invoke_pending_cb;
1428} 2553}
1429 2554
2555void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2556ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1431{ 2557{
1432 release_cb = release; 2558 release_cb = release;
1433 acquire_cb = acquire; 2559 acquire_cb = acquire;
1434} 2560}
1435#endif 2561#endif
1436 2562
1437/* initialise a loop structure, must be zero-initialised */ 2563/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2564static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2565loop_init (EV_P_ unsigned int flags) EV_THROW
1440{ 2566{
1441 if (!backend) 2567 if (!backend)
1442 { 2568 {
2569 origflags = flags;
2570
1443#if EV_USE_REALTIME 2571#if EV_USE_REALTIME
1444 if (!have_realtime) 2572 if (!have_realtime)
1445 { 2573 {
1446 struct timespec ts; 2574 struct timespec ts;
1447 2575
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2586 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2587 have_monotonic = 1;
1460 } 2588 }
1461#endif 2589#endif
1462 2590
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2591 /* pid check not overridable via env */
1481#ifndef _WIN32 2592#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2593 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2594 curpid = getpid ();
1484#endif 2595#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2597 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2598 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2599 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2600 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2601
1491 if (!(flags & 0x0000ffffU)) 2602 ev_rt_now = ev_time ();
2603 mn_now = get_clock ();
2604 now_floor = mn_now;
2605 rtmn_diff = ev_rt_now - mn_now;
2606#if EV_FEATURE_API
2607 invoke_cb = ev_invoke_pending;
2608#endif
2609
2610 io_blocktime = 0.;
2611 timeout_blocktime = 0.;
2612 backend = 0;
2613 backend_fd = -1;
2614 sig_pending = 0;
2615#if EV_ASYNC_ENABLE
2616 async_pending = 0;
2617#endif
2618 pipe_write_skipped = 0;
2619 pipe_write_wanted = 0;
2620 evpipe [0] = -1;
2621 evpipe [1] = -1;
2622#if EV_USE_INOTIFY
2623 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2624#endif
2625#if EV_USE_SIGNALFD
2626 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2627#endif
2628
2629 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2630 flags |= ev_recommended_backends ();
1493 2631
2632#if EV_USE_IOCP
2633 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2634#endif
1494#if EV_USE_PORT 2635#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2636 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2637#endif
1497#if EV_USE_KQUEUE 2638#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2648 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2649#endif
1509 2650
1510 ev_prepare_init (&pending_w, pendingcb); 2651 ev_prepare_init (&pending_w, pendingcb);
1511 2652
2653#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2654 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2655 ev_set_priority (&pipe_w, EV_MAXPRI);
2656#endif
1514 } 2657 }
1515} 2658}
1516 2659
1517/* free up a loop structure */ 2660/* free up a loop structure */
1518static void noinline 2661void ecb_cold
1519loop_destroy (EV_P) 2662ev_loop_destroy (EV_P)
1520{ 2663{
1521 int i; 2664 int i;
1522 2665
2666#if EV_MULTIPLICITY
2667 /* mimic free (0) */
2668 if (!EV_A)
2669 return;
2670#endif
2671
2672#if EV_CLEANUP_ENABLE
2673 /* queue cleanup watchers (and execute them) */
2674 if (expect_false (cleanupcnt))
2675 {
2676 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2677 EV_INVOKE_PENDING;
2678 }
2679#endif
2680
2681#if EV_CHILD_ENABLE
2682 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2683 {
2684 ev_ref (EV_A); /* child watcher */
2685 ev_signal_stop (EV_A_ &childev);
2686 }
2687#endif
2688
1523 if (ev_is_active (&pipe_w)) 2689 if (ev_is_active (&pipe_w))
1524 { 2690 {
1525 ev_ref (EV_A); /* signal watcher */ 2691 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2692 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2693
2694 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2695 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2696 }
2697
1528#if EV_USE_EVENTFD 2698#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 2699 if (ev_is_active (&sigfd_w))
1530 close (evfd); 2700 close (sigfd);
1531#endif 2701#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 2702
1540#if EV_USE_INOTIFY 2703#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2704 if (fs_fd >= 0)
1542 close (fs_fd); 2705 close (fs_fd);
1543#endif 2706#endif
1544 2707
1545 if (backend_fd >= 0) 2708 if (backend_fd >= 0)
1546 close (backend_fd); 2709 close (backend_fd);
1547 2710
2711#if EV_USE_IOCP
2712 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2713#endif
1548#if EV_USE_PORT 2714#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2715 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2716#endif
1551#if EV_USE_KQUEUE 2717#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2718 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2733#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2734 array_free (idle, [i]);
1569#endif 2735#endif
1570 } 2736 }
1571 2737
1572 ev_free (anfds); anfdmax = 0; 2738 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2739
1574 /* have to use the microsoft-never-gets-it-right macro */ 2740 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2741 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2742 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2743 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2745 array_free (periodic, EMPTY);
1580#endif 2746#endif
1581#if EV_FORK_ENABLE 2747#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2748 array_free (fork, EMPTY);
1583#endif 2749#endif
2750#if EV_CLEANUP_ENABLE
2751 array_free (cleanup, EMPTY);
2752#endif
1584 array_free (prepare, EMPTY); 2753 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2754 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2755#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2756 array_free (async, EMPTY);
1588#endif 2757#endif
1589 2758
1590 backend = 0; 2759 backend = 0;
2760
2761#if EV_MULTIPLICITY
2762 if (ev_is_default_loop (EV_A))
2763#endif
2764 ev_default_loop_ptr = 0;
2765#if EV_MULTIPLICITY
2766 else
2767 ev_free (EV_A);
2768#endif
1591} 2769}
1592 2770
1593#if EV_USE_INOTIFY 2771#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2772inline_size void infy_fork (EV_P);
1595#endif 2773#endif
… …
1608#endif 2786#endif
1609#if EV_USE_INOTIFY 2787#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 2788 infy_fork (EV_A);
1611#endif 2789#endif
1612 2790
2791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 2792 if (ev_is_active (&pipe_w))
1614 { 2793 {
1615 /* this "locks" the handlers against writing to the pipe */ 2794 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2795
1622 ev_ref (EV_A); 2796 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2797 ev_io_stop (EV_A_ &pipe_w);
1624 2798
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 2799 if (evpipe [0] >= 0)
1631 { 2800 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 2801
1636 evpipe_init (EV_A); 2802 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2803 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2804 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 2805 }
2806#endif
1640 2807
1641 postfork = 0; 2808 postfork = 0;
1642} 2809}
1643 2810
1644#if EV_MULTIPLICITY 2811#if EV_MULTIPLICITY
1645 2812
1646struct ev_loop * 2813struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2814ev_loop_new (unsigned int flags) EV_THROW
1648{ 2815{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2817
1651 memset (loop, 0, sizeof (struct ev_loop)); 2818 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2819 loop_init (EV_A_ flags);
1654 2820
1655 if (ev_backend (EV_A)) 2821 if (ev_backend (EV_A))
1656 return loop; 2822 return EV_A;
1657 2823
2824 ev_free (EV_A);
1658 return 0; 2825 return 0;
1659} 2826}
1660 2827
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2828#endif /* multiplicity */
1674 2829
1675#if EV_VERIFY 2830#if EV_VERIFY
1676static void noinline 2831static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2832verify_watcher (EV_P_ W w)
1678{ 2833{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2834 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2835
1681 if (w->pending) 2836 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2837 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2838}
1684 2839
1685static void noinline 2840static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2841verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2842{
1688 int i; 2843 int i;
1689 2844
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2845 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2850
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2851 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2852 }
1698} 2853}
1699 2854
1700static void noinline 2855static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2856array_verify (EV_P_ W *ws, int cnt)
1702{ 2857{
1703 while (cnt--) 2858 while (cnt--)
1704 { 2859 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2861 verify_watcher (EV_A_ ws [cnt]);
1707 } 2862 }
1708} 2863}
1709#endif 2864#endif
1710 2865
1711#if EV_MINIMAL < 2 2866#if EV_FEATURE_API
1712void 2867void ecb_cold
1713ev_loop_verify (EV_P) 2868ev_verify (EV_P) EV_THROW
1714{ 2869{
1715#if EV_VERIFY 2870#if EV_VERIFY
1716 int i; 2871 int i;
1717 WL w; 2872 WL w, w2;
1718 2873
1719 assert (activecnt >= -1); 2874 assert (activecnt >= -1);
1720 2875
1721 assert (fdchangemax >= fdchangecnt); 2876 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 2877 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 2879
1725 assert (anfdmax >= 0); 2880 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 2881 for (i = 0; i < anfdmax; ++i)
2882 {
2883 int j = 0;
2884
1727 for (w = anfds [i].head; w; w = w->next) 2885 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 2886 {
1729 verify_watcher (EV_A_ (W)w); 2887 verify_watcher (EV_A_ (W)w);
2888
2889 if (j++ & 1)
2890 {
2891 assert (("libev: io watcher list contains a loop", w != w2));
2892 w2 = w2->next;
2893 }
2894
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2895 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2896 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 2897 }
2898 }
1733 2899
1734 assert (timermax >= timercnt); 2900 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 2901 verify_heap (EV_A_ timers, timercnt);
1736 2902
1737#if EV_PERIODIC_ENABLE 2903#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 2918#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2919 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2920 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2921#endif
1756 2922
2923#if EV_CLEANUP_ENABLE
2924 assert (cleanupmax >= cleanupcnt);
2925 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2926#endif
2927
1757#if EV_ASYNC_ENABLE 2928#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2929 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2930 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2931#endif
1761 2932
2933#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2934 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2935 array_verify (EV_A_ (W *)prepares, preparecnt);
2936#endif
1764 2937
2938#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2939 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2940 array_verify (EV_A_ (W *)checks, checkcnt);
2941#endif
1767 2942
1768# if 0 2943# if 0
2944#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2945 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2946 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2947#endif
1771# endif 2948# endif
1772#endif 2949#endif
1773} 2950}
1774#endif 2951#endif
1775 2952
1776#if EV_MULTIPLICITY 2953#if EV_MULTIPLICITY
1777struct ev_loop * 2954struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2955#else
1780int 2956int
2957#endif
1781ev_default_loop (unsigned int flags) 2958ev_default_loop (unsigned int flags) EV_THROW
1782#endif
1783{ 2959{
1784 if (!ev_default_loop_ptr) 2960 if (!ev_default_loop_ptr)
1785 { 2961 {
1786#if EV_MULTIPLICITY 2962#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2963 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2964#else
1789 ev_default_loop_ptr = 1; 2965 ev_default_loop_ptr = 1;
1790#endif 2966#endif
1791 2967
1792 loop_init (EV_A_ flags); 2968 loop_init (EV_A_ flags);
1793 2969
1794 if (ev_backend (EV_A)) 2970 if (ev_backend (EV_A))
1795 { 2971 {
1796#ifndef _WIN32 2972#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2973 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2974 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2975 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2976 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2977#endif
… …
1806 2982
1807 return ev_default_loop_ptr; 2983 return ev_default_loop_ptr;
1808} 2984}
1809 2985
1810void 2986void
1811ev_default_destroy (void) 2987ev_loop_fork (EV_P) EV_THROW
1812{ 2988{
1813#if EV_MULTIPLICITY 2989 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 2990}
1836 2991
1837/*****************************************************************************/ 2992/*****************************************************************************/
1838 2993
1839void 2994void
1840ev_invoke (EV_P_ void *w, int revents) 2995ev_invoke (EV_P_ void *w, int revents)
1841{ 2996{
1842 EV_CB_INVOKE ((W)w, revents); 2997 EV_CB_INVOKE ((W)w, revents);
1843} 2998}
1844 2999
3000unsigned int
3001ev_pending_count (EV_P) EV_THROW
3002{
3003 int pri;
3004 unsigned int count = 0;
3005
3006 for (pri = NUMPRI; pri--; )
3007 count += pendingcnt [pri];
3008
3009 return count;
3010}
3011
1845void noinline 3012void noinline
1846ev_invoke_pending (EV_P) 3013ev_invoke_pending (EV_P)
1847{ 3014{
1848 int pri; 3015 pendingpri = NUMPRI;
1849 3016
1850 for (pri = NUMPRI; pri--; ) 3017 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3018 {
3019 --pendingpri;
3020
1851 while (pendingcnt [pri]) 3021 while (pendingcnt [pendingpri])
1852 { 3022 {
1853 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3023 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1854 3024
1855 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1856 /* ^ this is no longer true, as pending_w could be here */
1857
1858 p->w->pending = 0; 3025 p->w->pending = 0;
1859 EV_CB_INVOKE (p->w, p->events); 3026 EV_CB_INVOKE (p->w, p->events);
1860 EV_FREQUENT_CHECK; 3027 EV_FREQUENT_CHECK;
1861 } 3028 }
3029 }
1862} 3030}
1863 3031
1864#if EV_IDLE_ENABLE 3032#if EV_IDLE_ENABLE
1865/* make idle watchers pending. this handles the "call-idle */ 3033/* make idle watchers pending. this handles the "call-idle */
1866/* only when higher priorities are idle" logic */ 3034/* only when higher priorities are idle" logic */
… …
1918 EV_FREQUENT_CHECK; 3086 EV_FREQUENT_CHECK;
1919 feed_reverse (EV_A_ (W)w); 3087 feed_reverse (EV_A_ (W)w);
1920 } 3088 }
1921 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3089 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1922 3090
1923 feed_reverse_done (EV_A_ EV_TIMEOUT); 3091 feed_reverse_done (EV_A_ EV_TIMER);
1924 } 3092 }
1925} 3093}
1926 3094
1927#if EV_PERIODIC_ENABLE 3095#if EV_PERIODIC_ENABLE
3096
3097static void noinline
3098periodic_recalc (EV_P_ ev_periodic *w)
3099{
3100 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3101 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3102
3103 /* the above almost always errs on the low side */
3104 while (at <= ev_rt_now)
3105 {
3106 ev_tstamp nat = at + w->interval;
3107
3108 /* when resolution fails us, we use ev_rt_now */
3109 if (expect_false (nat == at))
3110 {
3111 at = ev_rt_now;
3112 break;
3113 }
3114
3115 at = nat;
3116 }
3117
3118 ev_at (w) = at;
3119}
3120
1928/* make periodics pending */ 3121/* make periodics pending */
1929inline_size void 3122inline_size void
1930periodics_reify (EV_P) 3123periodics_reify (EV_P)
1931{ 3124{
1932 EV_FREQUENT_CHECK; 3125 EV_FREQUENT_CHECK;
1933 3126
1934 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3127 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1935 { 3128 {
1936 int feed_count = 0;
1937
1938 do 3129 do
1939 { 3130 {
1940 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1941 3132
1942 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3133 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1951 ANHE_at_cache (periodics [HEAP0]); 3142 ANHE_at_cache (periodics [HEAP0]);
1952 downheap (periodics, periodiccnt, HEAP0); 3143 downheap (periodics, periodiccnt, HEAP0);
1953 } 3144 }
1954 else if (w->interval) 3145 else if (w->interval)
1955 { 3146 {
1956 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3147 periodic_recalc (EV_A_ w);
1957 /* if next trigger time is not sufficiently in the future, put it there */
1958 /* this might happen because of floating point inexactness */
1959 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1960 {
1961 ev_at (w) += w->interval;
1962
1963 /* if interval is unreasonably low we might still have a time in the past */
1964 /* so correct this. this will make the periodic very inexact, but the user */
1965 /* has effectively asked to get triggered more often than possible */
1966 if (ev_at (w) < ev_rt_now)
1967 ev_at (w) = ev_rt_now;
1968 }
1969
1970 ANHE_at_cache (periodics [HEAP0]); 3148 ANHE_at_cache (periodics [HEAP0]);
1971 downheap (periodics, periodiccnt, HEAP0); 3149 downheap (periodics, periodiccnt, HEAP0);
1972 } 3150 }
1973 else 3151 else
1974 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1981 feed_reverse_done (EV_A_ EV_PERIODIC); 3159 feed_reverse_done (EV_A_ EV_PERIODIC);
1982 } 3160 }
1983} 3161}
1984 3162
1985/* simply recalculate all periodics */ 3163/* simply recalculate all periodics */
1986/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3164/* TODO: maybe ensure that at least one event happens when jumping forward? */
1987static void noinline 3165static void noinline ecb_cold
1988periodics_reschedule (EV_P) 3166periodics_reschedule (EV_P)
1989{ 3167{
1990 int i; 3168 int i;
1991 3169
1992 /* adjust periodics after time jump */ 3170 /* adjust periodics after time jump */
… …
1995 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1996 3174
1997 if (w->reschedule_cb) 3175 if (w->reschedule_cb)
1998 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3176 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1999 else if (w->interval) 3177 else if (w->interval)
2000 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3178 periodic_recalc (EV_A_ w);
2001 3179
2002 ANHE_at_cache (periodics [i]); 3180 ANHE_at_cache (periodics [i]);
2003 } 3181 }
2004 3182
2005 reheap (periodics, periodiccnt); 3183 reheap (periodics, periodiccnt);
2006} 3184}
2007#endif 3185#endif
2008 3186
2009/* adjust all timers by a given offset */ 3187/* adjust all timers by a given offset */
2010static void noinline 3188static void noinline ecb_cold
2011timers_reschedule (EV_P_ ev_tstamp adjust) 3189timers_reschedule (EV_P_ ev_tstamp adjust)
2012{ 3190{
2013 int i; 3191 int i;
2014 3192
2015 for (i = 0; i < timercnt; ++i) 3193 for (i = 0; i < timercnt; ++i)
… …
2019 ANHE_at_cache (*he); 3197 ANHE_at_cache (*he);
2020 } 3198 }
2021} 3199}
2022 3200
2023/* fetch new monotonic and realtime times from the kernel */ 3201/* fetch new monotonic and realtime times from the kernel */
2024/* also detetc if there was a timejump, and act accordingly */ 3202/* also detect if there was a timejump, and act accordingly */
2025inline_speed void 3203inline_speed void
2026time_update (EV_P_ ev_tstamp max_block) 3204time_update (EV_P_ ev_tstamp max_block)
2027{ 3205{
2028#if EV_USE_MONOTONIC 3206#if EV_USE_MONOTONIC
2029 if (expect_true (have_monotonic)) 3207 if (expect_true (have_monotonic))
… …
2052 * doesn't hurt either as we only do this on time-jumps or 3230 * doesn't hurt either as we only do this on time-jumps or
2053 * in the unlikely event of having been preempted here. 3231 * in the unlikely event of having been preempted here.
2054 */ 3232 */
2055 for (i = 4; --i; ) 3233 for (i = 4; --i; )
2056 { 3234 {
3235 ev_tstamp diff;
2057 rtmn_diff = ev_rt_now - mn_now; 3236 rtmn_diff = ev_rt_now - mn_now;
2058 3237
3238 diff = odiff - rtmn_diff;
3239
2059 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3240 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2060 return; /* all is well */ 3241 return; /* all is well */
2061 3242
2062 ev_rt_now = ev_time (); 3243 ev_rt_now = ev_time ();
2063 mn_now = get_clock (); 3244 mn_now = get_clock ();
2064 now_floor = mn_now; 3245 now_floor = mn_now;
… …
2086 3267
2087 mn_now = ev_rt_now; 3268 mn_now = ev_rt_now;
2088 } 3269 }
2089} 3270}
2090 3271
2091void 3272int
2092ev_loop (EV_P_ int flags) 3273ev_run (EV_P_ int flags)
2093{ 3274{
2094#if EV_MINIMAL < 2 3275#if EV_FEATURE_API
2095 ++loop_depth; 3276 ++loop_depth;
2096#endif 3277#endif
2097 3278
2098 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3279 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2099 3280
2100 loop_done = EVUNLOOP_CANCEL; 3281 loop_done = EVBREAK_CANCEL;
2101 3282
2102 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2103 3284
2104 do 3285 do
2105 { 3286 {
2106#if EV_VERIFY >= 2 3287#if EV_VERIFY >= 2
2107 ev_loop_verify (EV_A); 3288 ev_verify (EV_A);
2108#endif 3289#endif
2109 3290
2110#ifndef _WIN32 3291#ifndef _WIN32
2111 if (expect_false (curpid)) /* penalise the forking check even more */ 3292 if (expect_false (curpid)) /* penalise the forking check even more */
2112 if (expect_false (getpid () != curpid)) 3293 if (expect_false (getpid () != curpid))
… …
2124 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3305 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2125 EV_INVOKE_PENDING; 3306 EV_INVOKE_PENDING;
2126 } 3307 }
2127#endif 3308#endif
2128 3309
3310#if EV_PREPARE_ENABLE
2129 /* queue prepare watchers (and execute them) */ 3311 /* queue prepare watchers (and execute them) */
2130 if (expect_false (preparecnt)) 3312 if (expect_false (preparecnt))
2131 { 3313 {
2132 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3314 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2133 EV_INVOKE_PENDING; 3315 EV_INVOKE_PENDING;
2134 } 3316 }
3317#endif
2135 3318
2136 if (expect_false (loop_done)) 3319 if (expect_false (loop_done))
2137 break; 3320 break;
2138 3321
2139 /* we might have forked, so reify kernel state if necessary */ 3322 /* we might have forked, so reify kernel state if necessary */
… …
2146 /* calculate blocking time */ 3329 /* calculate blocking time */
2147 { 3330 {
2148 ev_tstamp waittime = 0.; 3331 ev_tstamp waittime = 0.;
2149 ev_tstamp sleeptime = 0.; 3332 ev_tstamp sleeptime = 0.;
2150 3333
3334 /* remember old timestamp for io_blocktime calculation */
3335 ev_tstamp prev_mn_now = mn_now;
3336
3337 /* update time to cancel out callback processing overhead */
3338 time_update (EV_A_ 1e100);
3339
3340 /* from now on, we want a pipe-wake-up */
3341 pipe_write_wanted = 1;
3342
3343 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3344
2151 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3345 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2152 { 3346 {
2153 /* remember old timestamp for io_blocktime calculation */
2154 ev_tstamp prev_mn_now = mn_now;
2155
2156 /* update time to cancel out callback processing overhead */
2157 time_update (EV_A_ 1e100);
2158
2159 waittime = MAX_BLOCKTIME; 3347 waittime = MAX_BLOCKTIME;
2160 3348
2161 if (timercnt) 3349 if (timercnt)
2162 { 3350 {
2163 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2164 if (waittime > to) waittime = to; 3352 if (waittime > to) waittime = to;
2165 } 3353 }
2166 3354
2167#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
2168 if (periodiccnt) 3356 if (periodiccnt)
2169 { 3357 {
2170 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2171 if (waittime > to) waittime = to; 3359 if (waittime > to) waittime = to;
2172 } 3360 }
2173#endif 3361#endif
2174 3362
2175 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3363 /* don't let timeouts decrease the waittime below timeout_blocktime */
2176 if (expect_false (waittime < timeout_blocktime)) 3364 if (expect_false (waittime < timeout_blocktime))
2177 waittime = timeout_blocktime; 3365 waittime = timeout_blocktime;
3366
3367 /* at this point, we NEED to wait, so we have to ensure */
3368 /* to pass a minimum nonzero value to the backend */
3369 if (expect_false (waittime < backend_mintime))
3370 waittime = backend_mintime;
2178 3371
2179 /* extra check because io_blocktime is commonly 0 */ 3372 /* extra check because io_blocktime is commonly 0 */
2180 if (expect_false (io_blocktime)) 3373 if (expect_false (io_blocktime))
2181 { 3374 {
2182 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3375 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2183 3376
2184 if (sleeptime > waittime - backend_fudge) 3377 if (sleeptime > waittime - backend_mintime)
2185 sleeptime = waittime - backend_fudge; 3378 sleeptime = waittime - backend_mintime;
2186 3379
2187 if (expect_true (sleeptime > 0.)) 3380 if (expect_true (sleeptime > 0.))
2188 { 3381 {
2189 ev_sleep (sleeptime); 3382 ev_sleep (sleeptime);
2190 waittime -= sleeptime; 3383 waittime -= sleeptime;
2191 } 3384 }
2192 } 3385 }
2193 } 3386 }
2194 3387
2195#if EV_MINIMAL < 2 3388#if EV_FEATURE_API
2196 ++loop_count; 3389 ++loop_count;
2197#endif 3390#endif
2198 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2199 backend_poll (EV_A_ waittime); 3392 backend_poll (EV_A_ waittime);
2200 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3394
3395 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3396
3397 ECB_MEMORY_FENCE_ACQUIRE;
3398 if (pipe_write_skipped)
3399 {
3400 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3401 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3402 }
3403
2201 3404
2202 /* update ev_rt_now, do magic */ 3405 /* update ev_rt_now, do magic */
2203 time_update (EV_A_ waittime + sleeptime); 3406 time_update (EV_A_ waittime + sleeptime);
2204 } 3407 }
2205 3408
… …
2212#if EV_IDLE_ENABLE 3415#if EV_IDLE_ENABLE
2213 /* queue idle watchers unless other events are pending */ 3416 /* queue idle watchers unless other events are pending */
2214 idle_reify (EV_A); 3417 idle_reify (EV_A);
2215#endif 3418#endif
2216 3419
3420#if EV_CHECK_ENABLE
2217 /* queue check watchers, to be executed first */ 3421 /* queue check watchers, to be executed first */
2218 if (expect_false (checkcnt)) 3422 if (expect_false (checkcnt))
2219 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3423 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3424#endif
2220 3425
2221 EV_INVOKE_PENDING; 3426 EV_INVOKE_PENDING;
2222 } 3427 }
2223 while (expect_true ( 3428 while (expect_true (
2224 activecnt 3429 activecnt
2225 && !loop_done 3430 && !loop_done
2226 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3431 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2227 )); 3432 ));
2228 3433
2229 if (loop_done == EVUNLOOP_ONE) 3434 if (loop_done == EVBREAK_ONE)
2230 loop_done = EVUNLOOP_CANCEL; 3435 loop_done = EVBREAK_CANCEL;
2231 3436
2232#if EV_MINIMAL < 2 3437#if EV_FEATURE_API
2233 --loop_depth; 3438 --loop_depth;
2234#endif 3439#endif
3440
3441 return activecnt;
2235} 3442}
2236 3443
2237void 3444void
2238ev_unloop (EV_P_ int how) 3445ev_break (EV_P_ int how) EV_THROW
2239{ 3446{
2240 loop_done = how; 3447 loop_done = how;
2241} 3448}
2242 3449
2243void 3450void
2244ev_ref (EV_P) 3451ev_ref (EV_P) EV_THROW
2245{ 3452{
2246 ++activecnt; 3453 ++activecnt;
2247} 3454}
2248 3455
2249void 3456void
2250ev_unref (EV_P) 3457ev_unref (EV_P) EV_THROW
2251{ 3458{
2252 --activecnt; 3459 --activecnt;
2253} 3460}
2254 3461
2255void 3462void
2256ev_now_update (EV_P) 3463ev_now_update (EV_P) EV_THROW
2257{ 3464{
2258 time_update (EV_A_ 1e100); 3465 time_update (EV_A_ 1e100);
2259} 3466}
2260 3467
2261void 3468void
2262ev_suspend (EV_P) 3469ev_suspend (EV_P) EV_THROW
2263{ 3470{
2264 ev_now_update (EV_A); 3471 ev_now_update (EV_A);
2265} 3472}
2266 3473
2267void 3474void
2268ev_resume (EV_P) 3475ev_resume (EV_P) EV_THROW
2269{ 3476{
2270 ev_tstamp mn_prev = mn_now; 3477 ev_tstamp mn_prev = mn_now;
2271 3478
2272 ev_now_update (EV_A); 3479 ev_now_update (EV_A);
2273 timers_reschedule (EV_A_ mn_now - mn_prev); 3480 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2290inline_size void 3497inline_size void
2291wlist_del (WL *head, WL elem) 3498wlist_del (WL *head, WL elem)
2292{ 3499{
2293 while (*head) 3500 while (*head)
2294 { 3501 {
2295 if (*head == elem) 3502 if (expect_true (*head == elem))
2296 { 3503 {
2297 *head = elem->next; 3504 *head = elem->next;
2298 return; 3505 break;
2299 } 3506 }
2300 3507
2301 head = &(*head)->next; 3508 head = &(*head)->next;
2302 } 3509 }
2303} 3510}
… …
2312 w->pending = 0; 3519 w->pending = 0;
2313 } 3520 }
2314} 3521}
2315 3522
2316int 3523int
2317ev_clear_pending (EV_P_ void *w) 3524ev_clear_pending (EV_P_ void *w) EV_THROW
2318{ 3525{
2319 W w_ = (W)w; 3526 W w_ = (W)w;
2320 int pending = w_->pending; 3527 int pending = w_->pending;
2321 3528
2322 if (expect_true (pending)) 3529 if (expect_true (pending))
… …
2355} 3562}
2356 3563
2357/*****************************************************************************/ 3564/*****************************************************************************/
2358 3565
2359void noinline 3566void noinline
2360ev_io_start (EV_P_ ev_io *w) 3567ev_io_start (EV_P_ ev_io *w) EV_THROW
2361{ 3568{
2362 int fd = w->fd; 3569 int fd = w->fd;
2363 3570
2364 if (expect_false (ev_is_active (w))) 3571 if (expect_false (ev_is_active (w)))
2365 return; 3572 return;
2366 3573
2367 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3574 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3575 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2369 3576
2370 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2371 3578
2372 ev_start (EV_A_ (W)w, 1); 3579 ev_start (EV_A_ (W)w, 1);
2373 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3580 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2374 wlist_add (&anfds[fd].head, (WL)w); 3581 wlist_add (&anfds[fd].head, (WL)w);
2375 3582
3583 /* common bug, apparently */
3584 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3585
2376 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3586 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2377 w->events &= ~EV__IOFDSET; 3587 w->events &= ~EV__IOFDSET;
2378 3588
2379 EV_FREQUENT_CHECK; 3589 EV_FREQUENT_CHECK;
2380} 3590}
2381 3591
2382void noinline 3592void noinline
2383ev_io_stop (EV_P_ ev_io *w) 3593ev_io_stop (EV_P_ ev_io *w) EV_THROW
2384{ 3594{
2385 clear_pending (EV_A_ (W)w); 3595 clear_pending (EV_A_ (W)w);
2386 if (expect_false (!ev_is_active (w))) 3596 if (expect_false (!ev_is_active (w)))
2387 return; 3597 return;
2388 3598
… …
2391 EV_FREQUENT_CHECK; 3601 EV_FREQUENT_CHECK;
2392 3602
2393 wlist_del (&anfds[w->fd].head, (WL)w); 3603 wlist_del (&anfds[w->fd].head, (WL)w);
2394 ev_stop (EV_A_ (W)w); 3604 ev_stop (EV_A_ (W)w);
2395 3605
2396 fd_change (EV_A_ w->fd, 1); 3606 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2397 3607
2398 EV_FREQUENT_CHECK; 3608 EV_FREQUENT_CHECK;
2399} 3609}
2400 3610
2401void noinline 3611void noinline
2402ev_timer_start (EV_P_ ev_timer *w) 3612ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2403{ 3613{
2404 if (expect_false (ev_is_active (w))) 3614 if (expect_false (ev_is_active (w)))
2405 return; 3615 return;
2406 3616
2407 ev_at (w) += mn_now; 3617 ev_at (w) += mn_now;
… …
2421 3631
2422 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3632 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2423} 3633}
2424 3634
2425void noinline 3635void noinline
2426ev_timer_stop (EV_P_ ev_timer *w) 3636ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2427{ 3637{
2428 clear_pending (EV_A_ (W)w); 3638 clear_pending (EV_A_ (W)w);
2429 if (expect_false (!ev_is_active (w))) 3639 if (expect_false (!ev_is_active (w)))
2430 return; 3640 return;
2431 3641
… …
2443 timers [active] = timers [timercnt + HEAP0]; 3653 timers [active] = timers [timercnt + HEAP0];
2444 adjustheap (timers, timercnt, active); 3654 adjustheap (timers, timercnt, active);
2445 } 3655 }
2446 } 3656 }
2447 3657
2448 EV_FREQUENT_CHECK;
2449
2450 ev_at (w) -= mn_now; 3658 ev_at (w) -= mn_now;
2451 3659
2452 ev_stop (EV_A_ (W)w); 3660 ev_stop (EV_A_ (W)w);
3661
3662 EV_FREQUENT_CHECK;
2453} 3663}
2454 3664
2455void noinline 3665void noinline
2456ev_timer_again (EV_P_ ev_timer *w) 3666ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2457{ 3667{
2458 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
3669
3670 clear_pending (EV_A_ (W)w);
2459 3671
2460 if (ev_is_active (w)) 3672 if (ev_is_active (w))
2461 { 3673 {
2462 if (w->repeat) 3674 if (w->repeat)
2463 { 3675 {
… …
2475 } 3687 }
2476 3688
2477 EV_FREQUENT_CHECK; 3689 EV_FREQUENT_CHECK;
2478} 3690}
2479 3691
3692ev_tstamp
3693ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3694{
3695 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3696}
3697
2480#if EV_PERIODIC_ENABLE 3698#if EV_PERIODIC_ENABLE
2481void noinline 3699void noinline
2482ev_periodic_start (EV_P_ ev_periodic *w) 3700ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2483{ 3701{
2484 if (expect_false (ev_is_active (w))) 3702 if (expect_false (ev_is_active (w)))
2485 return; 3703 return;
2486 3704
2487 if (w->reschedule_cb) 3705 if (w->reschedule_cb)
2488 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3706 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2489 else if (w->interval) 3707 else if (w->interval)
2490 { 3708 {
2491 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3709 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2492 /* this formula differs from the one in periodic_reify because we do not always round up */ 3710 periodic_recalc (EV_A_ w);
2493 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2494 } 3711 }
2495 else 3712 else
2496 ev_at (w) = w->offset; 3713 ev_at (w) = w->offset;
2497 3714
2498 EV_FREQUENT_CHECK; 3715 EV_FREQUENT_CHECK;
… …
2508 3725
2509 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3726 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2510} 3727}
2511 3728
2512void noinline 3729void noinline
2513ev_periodic_stop (EV_P_ ev_periodic *w) 3730ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2514{ 3731{
2515 clear_pending (EV_A_ (W)w); 3732 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3733 if (expect_false (!ev_is_active (w)))
2517 return; 3734 return;
2518 3735
… …
2530 periodics [active] = periodics [periodiccnt + HEAP0]; 3747 periodics [active] = periodics [periodiccnt + HEAP0];
2531 adjustheap (periodics, periodiccnt, active); 3748 adjustheap (periodics, periodiccnt, active);
2532 } 3749 }
2533 } 3750 }
2534 3751
2535 EV_FREQUENT_CHECK;
2536
2537 ev_stop (EV_A_ (W)w); 3752 ev_stop (EV_A_ (W)w);
3753
3754 EV_FREQUENT_CHECK;
2538} 3755}
2539 3756
2540void noinline 3757void noinline
2541ev_periodic_again (EV_P_ ev_periodic *w) 3758ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2542{ 3759{
2543 /* TODO: use adjustheap and recalculation */ 3760 /* TODO: use adjustheap and recalculation */
2544 ev_periodic_stop (EV_A_ w); 3761 ev_periodic_stop (EV_A_ w);
2545 ev_periodic_start (EV_A_ w); 3762 ev_periodic_start (EV_A_ w);
2546} 3763}
… …
2548 3765
2549#ifndef SA_RESTART 3766#ifndef SA_RESTART
2550# define SA_RESTART 0 3767# define SA_RESTART 0
2551#endif 3768#endif
2552 3769
3770#if EV_SIGNAL_ENABLE
3771
2553void noinline 3772void noinline
2554ev_signal_start (EV_P_ ev_signal *w) 3773ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2555{ 3774{
2556#if EV_MULTIPLICITY
2557 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2558#endif
2559 if (expect_false (ev_is_active (w))) 3775 if (expect_false (ev_is_active (w)))
2560 return; 3776 return;
2561 3777
2562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3778 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2563 3779
2564 evpipe_init (EV_A); 3780#if EV_MULTIPLICITY
3781 assert (("libev: a signal must not be attached to two different loops",
3782 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2565 3783
2566 EV_FREQUENT_CHECK; 3784 signals [w->signum - 1].loop = EV_A;
3785 ECB_MEMORY_FENCE_RELEASE;
3786#endif
2567 3787
3788 EV_FREQUENT_CHECK;
3789
3790#if EV_USE_SIGNALFD
3791 if (sigfd == -2)
2568 { 3792 {
2569#ifndef _WIN32 3793 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2570 sigset_t full, prev; 3794 if (sigfd < 0 && errno == EINVAL)
2571 sigfillset (&full); 3795 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572 sigprocmask (SIG_SETMASK, &full, &prev);
2573#endif
2574 3796
2575 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3797 if (sigfd >= 0)
3798 {
3799 fd_intern (sigfd); /* doing it twice will not hurt */
2576 3800
2577#ifndef _WIN32 3801 sigemptyset (&sigfd_set);
2578 sigprocmask (SIG_SETMASK, &prev, 0); 3802
2579#endif 3803 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3804 ev_set_priority (&sigfd_w, EV_MAXPRI);
3805 ev_io_start (EV_A_ &sigfd_w);
3806 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3807 }
2580 } 3808 }
3809
3810 if (sigfd >= 0)
3811 {
3812 /* TODO: check .head */
3813 sigaddset (&sigfd_set, w->signum);
3814 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3815
3816 signalfd (sigfd, &sigfd_set, 0);
3817 }
3818#endif
2581 3819
2582 ev_start (EV_A_ (W)w, 1); 3820 ev_start (EV_A_ (W)w, 1);
2583 wlist_add (&signals [w->signum - 1].head, (WL)w); 3821 wlist_add (&signals [w->signum - 1].head, (WL)w);
2584 3822
2585 if (!((WL)w)->next) 3823 if (!((WL)w)->next)
3824# if EV_USE_SIGNALFD
3825 if (sigfd < 0) /*TODO*/
3826# endif
2586 { 3827 {
2587#if _WIN32 3828# ifdef _WIN32
3829 evpipe_init (EV_A);
3830
2588 signal (w->signum, ev_sighandler); 3831 signal (w->signum, ev_sighandler);
2589#else 3832# else
2590 struct sigaction sa; 3833 struct sigaction sa;
3834
3835 evpipe_init (EV_A);
3836
2591 sa.sa_handler = ev_sighandler; 3837 sa.sa_handler = ev_sighandler;
2592 sigfillset (&sa.sa_mask); 3838 sigfillset (&sa.sa_mask);
2593 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3839 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2594 sigaction (w->signum, &sa, 0); 3840 sigaction (w->signum, &sa, 0);
3841
3842 if (origflags & EVFLAG_NOSIGMASK)
3843 {
3844 sigemptyset (&sa.sa_mask);
3845 sigaddset (&sa.sa_mask, w->signum);
3846 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3847 }
2595#endif 3848#endif
2596 } 3849 }
2597 3850
2598 EV_FREQUENT_CHECK; 3851 EV_FREQUENT_CHECK;
2599} 3852}
2600 3853
2601void noinline 3854void noinline
2602ev_signal_stop (EV_P_ ev_signal *w) 3855ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2603{ 3856{
2604 clear_pending (EV_A_ (W)w); 3857 clear_pending (EV_A_ (W)w);
2605 if (expect_false (!ev_is_active (w))) 3858 if (expect_false (!ev_is_active (w)))
2606 return; 3859 return;
2607 3860
… …
2609 3862
2610 wlist_del (&signals [w->signum - 1].head, (WL)w); 3863 wlist_del (&signals [w->signum - 1].head, (WL)w);
2611 ev_stop (EV_A_ (W)w); 3864 ev_stop (EV_A_ (W)w);
2612 3865
2613 if (!signals [w->signum - 1].head) 3866 if (!signals [w->signum - 1].head)
3867 {
3868#if EV_MULTIPLICITY
3869 signals [w->signum - 1].loop = 0; /* unattach from signal */
3870#endif
3871#if EV_USE_SIGNALFD
3872 if (sigfd >= 0)
3873 {
3874 sigset_t ss;
3875
3876 sigemptyset (&ss);
3877 sigaddset (&ss, w->signum);
3878 sigdelset (&sigfd_set, w->signum);
3879
3880 signalfd (sigfd, &sigfd_set, 0);
3881 sigprocmask (SIG_UNBLOCK, &ss, 0);
3882 }
3883 else
3884#endif
2614 signal (w->signum, SIG_DFL); 3885 signal (w->signum, SIG_DFL);
3886 }
2615 3887
2616 EV_FREQUENT_CHECK; 3888 EV_FREQUENT_CHECK;
2617} 3889}
3890
3891#endif
3892
3893#if EV_CHILD_ENABLE
2618 3894
2619void 3895void
2620ev_child_start (EV_P_ ev_child *w) 3896ev_child_start (EV_P_ ev_child *w) EV_THROW
2621{ 3897{
2622#if EV_MULTIPLICITY 3898#if EV_MULTIPLICITY
2623 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3899 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2624#endif 3900#endif
2625 if (expect_false (ev_is_active (w))) 3901 if (expect_false (ev_is_active (w)))
2626 return; 3902 return;
2627 3903
2628 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2629 3905
2630 ev_start (EV_A_ (W)w, 1); 3906 ev_start (EV_A_ (W)w, 1);
2631 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3907 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2632 3908
2633 EV_FREQUENT_CHECK; 3909 EV_FREQUENT_CHECK;
2634} 3910}
2635 3911
2636void 3912void
2637ev_child_stop (EV_P_ ev_child *w) 3913ev_child_stop (EV_P_ ev_child *w) EV_THROW
2638{ 3914{
2639 clear_pending (EV_A_ (W)w); 3915 clear_pending (EV_A_ (W)w);
2640 if (expect_false (!ev_is_active (w))) 3916 if (expect_false (!ev_is_active (w)))
2641 return; 3917 return;
2642 3918
2643 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
2644 3920
2645 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3921 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2646 ev_stop (EV_A_ (W)w); 3922 ev_stop (EV_A_ (W)w);
2647 3923
2648 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2649} 3925}
3926
3927#endif
2650 3928
2651#if EV_STAT_ENABLE 3929#if EV_STAT_ENABLE
2652 3930
2653# ifdef _WIN32 3931# ifdef _WIN32
2654# undef lstat 3932# undef lstat
… …
2660#define MIN_STAT_INTERVAL 0.1074891 3938#define MIN_STAT_INTERVAL 0.1074891
2661 3939
2662static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3940static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2663 3941
2664#if EV_USE_INOTIFY 3942#if EV_USE_INOTIFY
2665# define EV_INOTIFY_BUFSIZE 8192 3943
3944/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3945# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2666 3946
2667static void noinline 3947static void noinline
2668infy_add (EV_P_ ev_stat *w) 3948infy_add (EV_P_ ev_stat *w)
2669{ 3949{
2670 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); 3950 w->wd = inotify_add_watch (fs_fd, w->path,
3951 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3952 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3953 | IN_DONT_FOLLOW | IN_MASK_ADD);
2671 3954
2672 if (w->wd < 0) 3955 if (w->wd >= 0)
3956 {
3957 struct statfs sfs;
3958
3959 /* now local changes will be tracked by inotify, but remote changes won't */
3960 /* unless the filesystem is known to be local, we therefore still poll */
3961 /* also do poll on <2.6.25, but with normal frequency */
3962
3963 if (!fs_2625)
3964 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3965 else if (!statfs (w->path, &sfs)
3966 && (sfs.f_type == 0x1373 /* devfs */
3967 || sfs.f_type == 0x4006 /* fat */
3968 || sfs.f_type == 0x4d44 /* msdos */
3969 || sfs.f_type == 0xEF53 /* ext2/3 */
3970 || sfs.f_type == 0x72b6 /* jffs2 */
3971 || sfs.f_type == 0x858458f6 /* ramfs */
3972 || sfs.f_type == 0x5346544e /* ntfs */
3973 || sfs.f_type == 0x3153464a /* jfs */
3974 || sfs.f_type == 0x9123683e /* btrfs */
3975 || sfs.f_type == 0x52654973 /* reiser3 */
3976 || sfs.f_type == 0x01021994 /* tmpfs */
3977 || sfs.f_type == 0x58465342 /* xfs */))
3978 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3979 else
3980 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2673 { 3981 }
3982 else
3983 {
3984 /* can't use inotify, continue to stat */
2674 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3985 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676 3986
2677 /* monitor some parent directory for speedup hints */ 3987 /* if path is not there, monitor some parent directory for speedup hints */
2678 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3988 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2679 /* but an efficiency issue only */ 3989 /* but an efficiency issue only */
2680 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3990 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2681 { 3991 {
2682 char path [4096]; 3992 char path [4096];
… …
2692 if (!pend || pend == path) 4002 if (!pend || pend == path)
2693 break; 4003 break;
2694 4004
2695 *pend = 0; 4005 *pend = 0;
2696 w->wd = inotify_add_watch (fs_fd, path, mask); 4006 w->wd = inotify_add_watch (fs_fd, path, mask);
2697 } 4007 }
2698 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4008 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2699 } 4009 }
2700 } 4010 }
2701 4011
2702 if (w->wd >= 0) 4012 if (w->wd >= 0)
2703 {
2704 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4013 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2705 4014
2706 /* now local changes will be tracked by inotify, but remote changes won't */ 4015 /* now re-arm timer, if required */
2707 /* unless the filesystem it known to be local, we therefore still poll */ 4016 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708 /* also do poll on <2.6.25, but with normal frequency */
2709 struct statfs sfs;
2710
2711 if (fs_2625 && !statfs (w->path, &sfs))
2712 if (sfs.f_type == 0x1373 /* devfs */
2713 || sfs.f_type == 0xEF53 /* ext2/3 */
2714 || sfs.f_type == 0x3153464a /* jfs */
2715 || sfs.f_type == 0x52654973 /* reiser3 */
2716 || sfs.f_type == 0x01021994 /* tempfs */
2717 || sfs.f_type == 0x58465342 /* xfs */)
2718 return;
2719
2720 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721 ev_timer_again (EV_A_ &w->timer); 4017 ev_timer_again (EV_A_ &w->timer);
2722 } 4018 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723} 4019}
2724 4020
2725static void noinline 4021static void noinline
2726infy_del (EV_P_ ev_stat *w) 4022infy_del (EV_P_ ev_stat *w)
2727{ 4023{
… …
2730 4026
2731 if (wd < 0) 4027 if (wd < 0)
2732 return; 4028 return;
2733 4029
2734 w->wd = -2; 4030 w->wd = -2;
2735 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4031 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2736 wlist_del (&fs_hash [slot].head, (WL)w); 4032 wlist_del (&fs_hash [slot].head, (WL)w);
2737 4033
2738 /* remove this watcher, if others are watching it, they will rearm */ 4034 /* remove this watcher, if others are watching it, they will rearm */
2739 inotify_rm_watch (fs_fd, wd); 4035 inotify_rm_watch (fs_fd, wd);
2740} 4036}
… …
2742static void noinline 4038static void noinline
2743infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4039infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2744{ 4040{
2745 if (slot < 0) 4041 if (slot < 0)
2746 /* overflow, need to check for all hash slots */ 4042 /* overflow, need to check for all hash slots */
2747 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4043 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2748 infy_wd (EV_A_ slot, wd, ev); 4044 infy_wd (EV_A_ slot, wd, ev);
2749 else 4045 else
2750 { 4046 {
2751 WL w_; 4047 WL w_;
2752 4048
2753 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4049 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2754 { 4050 {
2755 ev_stat *w = (ev_stat *)w_; 4051 ev_stat *w = (ev_stat *)w_;
2756 w_ = w_->next; /* lets us remove this watcher and all before it */ 4052 w_ = w_->next; /* lets us remove this watcher and all before it */
2757 4053
2758 if (w->wd == wd || wd == -1) 4054 if (w->wd == wd || wd == -1)
2759 { 4055 {
2760 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4056 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2761 { 4057 {
2762 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4058 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2763 w->wd = -1; 4059 w->wd = -1;
2764 infy_add (EV_A_ w); /* re-add, no matter what */ 4060 infy_add (EV_A_ w); /* re-add, no matter what */
2765 } 4061 }
2766 4062
2767 stat_timer_cb (EV_A_ &w->timer, 0); 4063 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2772 4068
2773static void 4069static void
2774infy_cb (EV_P_ ev_io *w, int revents) 4070infy_cb (EV_P_ ev_io *w, int revents)
2775{ 4071{
2776 char buf [EV_INOTIFY_BUFSIZE]; 4072 char buf [EV_INOTIFY_BUFSIZE];
2777 struct inotify_event *ev = (struct inotify_event *)buf;
2778 int ofs; 4073 int ofs;
2779 int len = read (fs_fd, buf, sizeof (buf)); 4074 int len = read (fs_fd, buf, sizeof (buf));
2780 4075
2781 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4076 for (ofs = 0; ofs < len; )
4077 {
4078 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2782 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4079 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4080 ofs += sizeof (struct inotify_event) + ev->len;
4081 }
2783} 4082}
2784 4083
2785inline_size void 4084inline_size void ecb_cold
2786check_2625 (EV_P) 4085ev_check_2625 (EV_P)
2787{ 4086{
2788 /* kernels < 2.6.25 are borked 4087 /* kernels < 2.6.25 are borked
2789 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4088 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2790 */ 4089 */
2791 struct utsname buf; 4090 if (ev_linux_version () < 0x020619)
2792 int major, minor, micro;
2793
2794 if (uname (&buf))
2795 return; 4091 return;
2796 4092
2797 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2798 return;
2799
2800 if (major < 2
2801 || (major == 2 && minor < 6)
2802 || (major == 2 && minor == 6 && micro < 25))
2803 return;
2804
2805 fs_2625 = 1; 4093 fs_2625 = 1;
4094}
4095
4096inline_size int
4097infy_newfd (void)
4098{
4099#if defined IN_CLOEXEC && defined IN_NONBLOCK
4100 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4101 if (fd >= 0)
4102 return fd;
4103#endif
4104 return inotify_init ();
2806} 4105}
2807 4106
2808inline_size void 4107inline_size void
2809infy_init (EV_P) 4108infy_init (EV_P)
2810{ 4109{
2811 if (fs_fd != -2) 4110 if (fs_fd != -2)
2812 return; 4111 return;
2813 4112
2814 fs_fd = -1; 4113 fs_fd = -1;
2815 4114
2816 check_2625 (EV_A); 4115 ev_check_2625 (EV_A);
2817 4116
2818 fs_fd = inotify_init (); 4117 fs_fd = infy_newfd ();
2819 4118
2820 if (fs_fd >= 0) 4119 if (fs_fd >= 0)
2821 { 4120 {
4121 fd_intern (fs_fd);
2822 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4122 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823 ev_set_priority (&fs_w, EV_MAXPRI); 4123 ev_set_priority (&fs_w, EV_MAXPRI);
2824 ev_io_start (EV_A_ &fs_w); 4124 ev_io_start (EV_A_ &fs_w);
4125 ev_unref (EV_A);
2825 } 4126 }
2826} 4127}
2827 4128
2828inline_size void 4129inline_size void
2829infy_fork (EV_P) 4130infy_fork (EV_P)
… …
2831 int slot; 4132 int slot;
2832 4133
2833 if (fs_fd < 0) 4134 if (fs_fd < 0)
2834 return; 4135 return;
2835 4136
4137 ev_ref (EV_A);
4138 ev_io_stop (EV_A_ &fs_w);
2836 close (fs_fd); 4139 close (fs_fd);
2837 fs_fd = inotify_init (); 4140 fs_fd = infy_newfd ();
2838 4141
4142 if (fs_fd >= 0)
4143 {
4144 fd_intern (fs_fd);
4145 ev_io_set (&fs_w, fs_fd, EV_READ);
4146 ev_io_start (EV_A_ &fs_w);
4147 ev_unref (EV_A);
4148 }
4149
2839 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4150 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2840 { 4151 {
2841 WL w_ = fs_hash [slot].head; 4152 WL w_ = fs_hash [slot].head;
2842 fs_hash [slot].head = 0; 4153 fs_hash [slot].head = 0;
2843 4154
2844 while (w_) 4155 while (w_)
… …
2849 w->wd = -1; 4160 w->wd = -1;
2850 4161
2851 if (fs_fd >= 0) 4162 if (fs_fd >= 0)
2852 infy_add (EV_A_ w); /* re-add, no matter what */ 4163 infy_add (EV_A_ w); /* re-add, no matter what */
2853 else 4164 else
4165 {
4166 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4167 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2854 ev_timer_again (EV_A_ &w->timer); 4168 ev_timer_again (EV_A_ &w->timer);
4169 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4170 }
2855 } 4171 }
2856 } 4172 }
2857} 4173}
2858 4174
2859#endif 4175#endif
… …
2863#else 4179#else
2864# define EV_LSTAT(p,b) lstat (p, b) 4180# define EV_LSTAT(p,b) lstat (p, b)
2865#endif 4181#endif
2866 4182
2867void 4183void
2868ev_stat_stat (EV_P_ ev_stat *w) 4184ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2869{ 4185{
2870 if (lstat (w->path, &w->attr) < 0) 4186 if (lstat (w->path, &w->attr) < 0)
2871 w->attr.st_nlink = 0; 4187 w->attr.st_nlink = 0;
2872 else if (!w->attr.st_nlink) 4188 else if (!w->attr.st_nlink)
2873 w->attr.st_nlink = 1; 4189 w->attr.st_nlink = 1;
… …
2876static void noinline 4192static void noinline
2877stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4193stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878{ 4194{
2879 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4195 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2880 4196
2881 /* we copy this here each the time so that */ 4197 ev_statdata prev = w->attr;
2882 /* prev has the old value when the callback gets invoked */
2883 w->prev = w->attr;
2884 ev_stat_stat (EV_A_ w); 4198 ev_stat_stat (EV_A_ w);
2885 4199
2886 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4200 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2887 if ( 4201 if (
2888 w->prev.st_dev != w->attr.st_dev 4202 prev.st_dev != w->attr.st_dev
2889 || w->prev.st_ino != w->attr.st_ino 4203 || prev.st_ino != w->attr.st_ino
2890 || w->prev.st_mode != w->attr.st_mode 4204 || prev.st_mode != w->attr.st_mode
2891 || w->prev.st_nlink != w->attr.st_nlink 4205 || prev.st_nlink != w->attr.st_nlink
2892 || w->prev.st_uid != w->attr.st_uid 4206 || prev.st_uid != w->attr.st_uid
2893 || w->prev.st_gid != w->attr.st_gid 4207 || prev.st_gid != w->attr.st_gid
2894 || w->prev.st_rdev != w->attr.st_rdev 4208 || prev.st_rdev != w->attr.st_rdev
2895 || w->prev.st_size != w->attr.st_size 4209 || prev.st_size != w->attr.st_size
2896 || w->prev.st_atime != w->attr.st_atime 4210 || prev.st_atime != w->attr.st_atime
2897 || w->prev.st_mtime != w->attr.st_mtime 4211 || prev.st_mtime != w->attr.st_mtime
2898 || w->prev.st_ctime != w->attr.st_ctime 4212 || prev.st_ctime != w->attr.st_ctime
2899 ) { 4213 ) {
4214 /* we only update w->prev on actual differences */
4215 /* in case we test more often than invoke the callback, */
4216 /* to ensure that prev is always different to attr */
4217 w->prev = prev;
4218
2900 #if EV_USE_INOTIFY 4219 #if EV_USE_INOTIFY
2901 if (fs_fd >= 0) 4220 if (fs_fd >= 0)
2902 { 4221 {
2903 infy_del (EV_A_ w); 4222 infy_del (EV_A_ w);
2904 infy_add (EV_A_ w); 4223 infy_add (EV_A_ w);
… …
2909 ev_feed_event (EV_A_ w, EV_STAT); 4228 ev_feed_event (EV_A_ w, EV_STAT);
2910 } 4229 }
2911} 4230}
2912 4231
2913void 4232void
2914ev_stat_start (EV_P_ ev_stat *w) 4233ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2915{ 4234{
2916 if (expect_false (ev_is_active (w))) 4235 if (expect_false (ev_is_active (w)))
2917 return; 4236 return;
2918 4237
2919 ev_stat_stat (EV_A_ w); 4238 ev_stat_stat (EV_A_ w);
… …
2929 4248
2930 if (fs_fd >= 0) 4249 if (fs_fd >= 0)
2931 infy_add (EV_A_ w); 4250 infy_add (EV_A_ w);
2932 else 4251 else
2933#endif 4252#endif
4253 {
2934 ev_timer_again (EV_A_ &w->timer); 4254 ev_timer_again (EV_A_ &w->timer);
4255 ev_unref (EV_A);
4256 }
2935 4257
2936 ev_start (EV_A_ (W)w, 1); 4258 ev_start (EV_A_ (W)w, 1);
2937 4259
2938 EV_FREQUENT_CHECK; 4260 EV_FREQUENT_CHECK;
2939} 4261}
2940 4262
2941void 4263void
2942ev_stat_stop (EV_P_ ev_stat *w) 4264ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2943{ 4265{
2944 clear_pending (EV_A_ (W)w); 4266 clear_pending (EV_A_ (W)w);
2945 if (expect_false (!ev_is_active (w))) 4267 if (expect_false (!ev_is_active (w)))
2946 return; 4268 return;
2947 4269
2948 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
2949 4271
2950#if EV_USE_INOTIFY 4272#if EV_USE_INOTIFY
2951 infy_del (EV_A_ w); 4273 infy_del (EV_A_ w);
2952#endif 4274#endif
4275
4276 if (ev_is_active (&w->timer))
4277 {
4278 ev_ref (EV_A);
2953 ev_timer_stop (EV_A_ &w->timer); 4279 ev_timer_stop (EV_A_ &w->timer);
4280 }
2954 4281
2955 ev_stop (EV_A_ (W)w); 4282 ev_stop (EV_A_ (W)w);
2956 4283
2957 EV_FREQUENT_CHECK; 4284 EV_FREQUENT_CHECK;
2958} 4285}
2959#endif 4286#endif
2960 4287
2961#if EV_IDLE_ENABLE 4288#if EV_IDLE_ENABLE
2962void 4289void
2963ev_idle_start (EV_P_ ev_idle *w) 4290ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2964{ 4291{
2965 if (expect_false (ev_is_active (w))) 4292 if (expect_false (ev_is_active (w)))
2966 return; 4293 return;
2967 4294
2968 pri_adjust (EV_A_ (W)w); 4295 pri_adjust (EV_A_ (W)w);
… …
2981 4308
2982 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
2983} 4310}
2984 4311
2985void 4312void
2986ev_idle_stop (EV_P_ ev_idle *w) 4313ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2987{ 4314{
2988 clear_pending (EV_A_ (W)w); 4315 clear_pending (EV_A_ (W)w);
2989 if (expect_false (!ev_is_active (w))) 4316 if (expect_false (!ev_is_active (w)))
2990 return; 4317 return;
2991 4318
… …
3003 4330
3004 EV_FREQUENT_CHECK; 4331 EV_FREQUENT_CHECK;
3005} 4332}
3006#endif 4333#endif
3007 4334
4335#if EV_PREPARE_ENABLE
3008void 4336void
3009ev_prepare_start (EV_P_ ev_prepare *w) 4337ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3010{ 4338{
3011 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
3012 return; 4340 return;
3013 4341
3014 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
… …
3019 4347
3020 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3021} 4349}
3022 4350
3023void 4351void
3024ev_prepare_stop (EV_P_ ev_prepare *w) 4352ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3025{ 4353{
3026 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3027 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3028 return; 4356 return;
3029 4357
… …
3038 4366
3039 ev_stop (EV_A_ (W)w); 4367 ev_stop (EV_A_ (W)w);
3040 4368
3041 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3042} 4370}
4371#endif
3043 4372
4373#if EV_CHECK_ENABLE
3044void 4374void
3045ev_check_start (EV_P_ ev_check *w) 4375ev_check_start (EV_P_ ev_check *w) EV_THROW
3046{ 4376{
3047 if (expect_false (ev_is_active (w))) 4377 if (expect_false (ev_is_active (w)))
3048 return; 4378 return;
3049 4379
3050 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
… …
3055 4385
3056 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3057} 4387}
3058 4388
3059void 4389void
3060ev_check_stop (EV_P_ ev_check *w) 4390ev_check_stop (EV_P_ ev_check *w) EV_THROW
3061{ 4391{
3062 clear_pending (EV_A_ (W)w); 4392 clear_pending (EV_A_ (W)w);
3063 if (expect_false (!ev_is_active (w))) 4393 if (expect_false (!ev_is_active (w)))
3064 return; 4394 return;
3065 4395
… …
3074 4404
3075 ev_stop (EV_A_ (W)w); 4405 ev_stop (EV_A_ (W)w);
3076 4406
3077 EV_FREQUENT_CHECK; 4407 EV_FREQUENT_CHECK;
3078} 4408}
4409#endif
3079 4410
3080#if EV_EMBED_ENABLE 4411#if EV_EMBED_ENABLE
3081void noinline 4412void noinline
3082ev_embed_sweep (EV_P_ ev_embed *w) 4413ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3083{ 4414{
3084 ev_loop (w->other, EVLOOP_NONBLOCK); 4415 ev_run (w->other, EVRUN_NOWAIT);
3085} 4416}
3086 4417
3087static void 4418static void
3088embed_io_cb (EV_P_ ev_io *io, int revents) 4419embed_io_cb (EV_P_ ev_io *io, int revents)
3089{ 4420{
3090 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4421 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3091 4422
3092 if (ev_cb (w)) 4423 if (ev_cb (w))
3093 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4424 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3094 else 4425 else
3095 ev_loop (w->other, EVLOOP_NONBLOCK); 4426 ev_run (w->other, EVRUN_NOWAIT);
3096} 4427}
3097 4428
3098static void 4429static void
3099embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100{ 4431{
3101 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4432 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3102 4433
3103 { 4434 {
3104 struct ev_loop *loop = w->other; 4435 EV_P = w->other;
3105 4436
3106 while (fdchangecnt) 4437 while (fdchangecnt)
3107 { 4438 {
3108 fd_reify (EV_A); 4439 fd_reify (EV_A);
3109 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4440 ev_run (EV_A_ EVRUN_NOWAIT);
3110 } 4441 }
3111 } 4442 }
3112} 4443}
3113 4444
3114static void 4445static void
… …
3117 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4448 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3118 4449
3119 ev_embed_stop (EV_A_ w); 4450 ev_embed_stop (EV_A_ w);
3120 4451
3121 { 4452 {
3122 struct ev_loop *loop = w->other; 4453 EV_P = w->other;
3123 4454
3124 ev_loop_fork (EV_A); 4455 ev_loop_fork (EV_A);
3125 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4456 ev_run (EV_A_ EVRUN_NOWAIT);
3126 } 4457 }
3127 4458
3128 ev_embed_start (EV_A_ w); 4459 ev_embed_start (EV_A_ w);
3129} 4460}
3130 4461
… …
3135 ev_idle_stop (EV_A_ idle); 4466 ev_idle_stop (EV_A_ idle);
3136} 4467}
3137#endif 4468#endif
3138 4469
3139void 4470void
3140ev_embed_start (EV_P_ ev_embed *w) 4471ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3141{ 4472{
3142 if (expect_false (ev_is_active (w))) 4473 if (expect_false (ev_is_active (w)))
3143 return; 4474 return;
3144 4475
3145 { 4476 {
3146 struct ev_loop *loop = w->other; 4477 EV_P = w->other;
3147 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4478 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3148 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4479 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3149 } 4480 }
3150 4481
3151 EV_FREQUENT_CHECK; 4482 EV_FREQUENT_CHECK;
… …
3166 4497
3167 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
3168} 4499}
3169 4500
3170void 4501void
3171ev_embed_stop (EV_P_ ev_embed *w) 4502ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3172{ 4503{
3173 clear_pending (EV_A_ (W)w); 4504 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4505 if (expect_false (!ev_is_active (w)))
3175 return; 4506 return;
3176 4507
… …
3178 4509
3179 ev_io_stop (EV_A_ &w->io); 4510 ev_io_stop (EV_A_ &w->io);
3180 ev_prepare_stop (EV_A_ &w->prepare); 4511 ev_prepare_stop (EV_A_ &w->prepare);
3181 ev_fork_stop (EV_A_ &w->fork); 4512 ev_fork_stop (EV_A_ &w->fork);
3182 4513
4514 ev_stop (EV_A_ (W)w);
4515
3183 EV_FREQUENT_CHECK; 4516 EV_FREQUENT_CHECK;
3184} 4517}
3185#endif 4518#endif
3186 4519
3187#if EV_FORK_ENABLE 4520#if EV_FORK_ENABLE
3188void 4521void
3189ev_fork_start (EV_P_ ev_fork *w) 4522ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3190{ 4523{
3191 if (expect_false (ev_is_active (w))) 4524 if (expect_false (ev_is_active (w)))
3192 return; 4525 return;
3193 4526
3194 EV_FREQUENT_CHECK; 4527 EV_FREQUENT_CHECK;
… …
3199 4532
3200 EV_FREQUENT_CHECK; 4533 EV_FREQUENT_CHECK;
3201} 4534}
3202 4535
3203void 4536void
3204ev_fork_stop (EV_P_ ev_fork *w) 4537ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3205{ 4538{
3206 clear_pending (EV_A_ (W)w); 4539 clear_pending (EV_A_ (W)w);
3207 if (expect_false (!ev_is_active (w))) 4540 if (expect_false (!ev_is_active (w)))
3208 return; 4541 return;
3209 4542
… …
3220 4553
3221 EV_FREQUENT_CHECK; 4554 EV_FREQUENT_CHECK;
3222} 4555}
3223#endif 4556#endif
3224 4557
4558#if EV_CLEANUP_ENABLE
4559void
4560ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4561{
4562 if (expect_false (ev_is_active (w)))
4563 return;
4564
4565 EV_FREQUENT_CHECK;
4566
4567 ev_start (EV_A_ (W)w, ++cleanupcnt);
4568 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4569 cleanups [cleanupcnt - 1] = w;
4570
4571 /* cleanup watchers should never keep a refcount on the loop */
4572 ev_unref (EV_A);
4573 EV_FREQUENT_CHECK;
4574}
4575
4576void
4577ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4578{
4579 clear_pending (EV_A_ (W)w);
4580 if (expect_false (!ev_is_active (w)))
4581 return;
4582
4583 EV_FREQUENT_CHECK;
4584 ev_ref (EV_A);
4585
4586 {
4587 int active = ev_active (w);
4588
4589 cleanups [active - 1] = cleanups [--cleanupcnt];
4590 ev_active (cleanups [active - 1]) = active;
4591 }
4592
4593 ev_stop (EV_A_ (W)w);
4594
4595 EV_FREQUENT_CHECK;
4596}
4597#endif
4598
3225#if EV_ASYNC_ENABLE 4599#if EV_ASYNC_ENABLE
3226void 4600void
3227ev_async_start (EV_P_ ev_async *w) 4601ev_async_start (EV_P_ ev_async *w) EV_THROW
3228{ 4602{
3229 if (expect_false (ev_is_active (w))) 4603 if (expect_false (ev_is_active (w)))
3230 return; 4604 return;
4605
4606 w->sent = 0;
3231 4607
3232 evpipe_init (EV_A); 4608 evpipe_init (EV_A);
3233 4609
3234 EV_FREQUENT_CHECK; 4610 EV_FREQUENT_CHECK;
3235 4611
… …
3239 4615
3240 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3241} 4617}
3242 4618
3243void 4619void
3244ev_async_stop (EV_P_ ev_async *w) 4620ev_async_stop (EV_P_ ev_async *w) EV_THROW
3245{ 4621{
3246 clear_pending (EV_A_ (W)w); 4622 clear_pending (EV_A_ (W)w);
3247 if (expect_false (!ev_is_active (w))) 4623 if (expect_false (!ev_is_active (w)))
3248 return; 4624 return;
3249 4625
… …
3260 4636
3261 EV_FREQUENT_CHECK; 4637 EV_FREQUENT_CHECK;
3262} 4638}
3263 4639
3264void 4640void
3265ev_async_send (EV_P_ ev_async *w) 4641ev_async_send (EV_P_ ev_async *w) EV_THROW
3266{ 4642{
3267 w->sent = 1; 4643 w->sent = 1;
3268 evpipe_write (EV_A_ &gotasync); 4644 evpipe_write (EV_A_ &async_pending);
3269} 4645}
3270#endif 4646#endif
3271 4647
3272/*****************************************************************************/ 4648/*****************************************************************************/
3273 4649
… …
3307 4683
3308 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4684 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3309} 4685}
3310 4686
3311void 4687void
3312ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4688ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3313{ 4689{
3314 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4690 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3315 4691
3316 if (expect_false (!once)) 4692 if (expect_false (!once))
3317 { 4693 {
3318 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4694 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3319 return; 4695 return;
3320 } 4696 }
3321 4697
3322 once->cb = cb; 4698 once->cb = cb;
3323 once->arg = arg; 4699 once->arg = arg;
… …
3338} 4714}
3339 4715
3340/*****************************************************************************/ 4716/*****************************************************************************/
3341 4717
3342#if EV_WALK_ENABLE 4718#if EV_WALK_ENABLE
3343void 4719void ecb_cold
3344ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4720ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3345{ 4721{
3346 int i, j; 4722 int i, j;
3347 ev_watcher_list *wl, *wn; 4723 ev_watcher_list *wl, *wn;
3348 4724
3349 if (types & (EV_IO | EV_EMBED)) 4725 if (types & (EV_IO | EV_EMBED))
… …
3392 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4768 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3393#endif 4769#endif
3394 4770
3395#if EV_IDLE_ENABLE 4771#if EV_IDLE_ENABLE
3396 if (types & EV_IDLE) 4772 if (types & EV_IDLE)
3397 for (j = NUMPRI; i--; ) 4773 for (j = NUMPRI; j--; )
3398 for (i = idlecnt [j]; i--; ) 4774 for (i = idlecnt [j]; i--; )
3399 cb (EV_A_ EV_IDLE, idles [j][i]); 4775 cb (EV_A_ EV_IDLE, idles [j][i]);
3400#endif 4776#endif
3401 4777
3402#if EV_FORK_ENABLE 4778#if EV_FORK_ENABLE
… …
3410 if (types & EV_ASYNC) 4786 if (types & EV_ASYNC)
3411 for (i = asynccnt; i--; ) 4787 for (i = asynccnt; i--; )
3412 cb (EV_A_ EV_ASYNC, asyncs [i]); 4788 cb (EV_A_ EV_ASYNC, asyncs [i]);
3413#endif 4789#endif
3414 4790
4791#if EV_PREPARE_ENABLE
3415 if (types & EV_PREPARE) 4792 if (types & EV_PREPARE)
3416 for (i = preparecnt; i--; ) 4793 for (i = preparecnt; i--; )
3417#if EV_EMBED_ENABLE 4794# if EV_EMBED_ENABLE
3418 if (ev_cb (prepares [i]) != embed_prepare_cb) 4795 if (ev_cb (prepares [i]) != embed_prepare_cb)
3419#endif 4796# endif
3420 cb (EV_A_ EV_PREPARE, prepares [i]); 4797 cb (EV_A_ EV_PREPARE, prepares [i]);
4798#endif
3421 4799
4800#if EV_CHECK_ENABLE
3422 if (types & EV_CHECK) 4801 if (types & EV_CHECK)
3423 for (i = checkcnt; i--; ) 4802 for (i = checkcnt; i--; )
3424 cb (EV_A_ EV_CHECK, checks [i]); 4803 cb (EV_A_ EV_CHECK, checks [i]);
4804#endif
3425 4805
4806#if EV_SIGNAL_ENABLE
3426 if (types & EV_SIGNAL) 4807 if (types & EV_SIGNAL)
3427 for (i = 0; i < signalmax; ++i) 4808 for (i = 0; i < EV_NSIG - 1; ++i)
3428 for (wl = signals [i].head; wl; ) 4809 for (wl = signals [i].head; wl; )
3429 { 4810 {
3430 wn = wl->next; 4811 wn = wl->next;
3431 cb (EV_A_ EV_SIGNAL, wl); 4812 cb (EV_A_ EV_SIGNAL, wl);
3432 wl = wn; 4813 wl = wn;
3433 } 4814 }
4815#endif
3434 4816
4817#if EV_CHILD_ENABLE
3435 if (types & EV_CHILD) 4818 if (types & EV_CHILD)
3436 for (i = EV_PID_HASHSIZE; i--; ) 4819 for (i = (EV_PID_HASHSIZE); i--; )
3437 for (wl = childs [i]; wl; ) 4820 for (wl = childs [i]; wl; )
3438 { 4821 {
3439 wn = wl->next; 4822 wn = wl->next;
3440 cb (EV_A_ EV_CHILD, wl); 4823 cb (EV_A_ EV_CHILD, wl);
3441 wl = wn; 4824 wl = wn;
3442 } 4825 }
4826#endif
3443/* EV_STAT 0x00001000 /* stat data changed */ 4827/* EV_STAT 0x00001000 /* stat data changed */
3444/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4828/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3445} 4829}
3446#endif 4830#endif
3447 4831
3448#if EV_MULTIPLICITY 4832#if EV_MULTIPLICITY
3449 #include "ev_wrap.h" 4833 #include "ev_wrap.h"
3450#endif 4834#endif
3451 4835
3452#ifdef __cplusplus
3453}
3454#endif
3455

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