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Comparing libev/ev.c (file contents):
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC vs.
Revision 1.432 by root, Mon May 14 19:09:58 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
171 181
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
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
176#endif 197#endif
177 198
178#ifndef _WIN32 199#ifndef _WIN32
179# include <sys/time.h> 200# include <sys/time.h>
180# include <sys/wait.h> 201# include <sys/wait.h>
181# include <unistd.h> 202# include <unistd.h>
182#else 203#else
183# include <io.h> 204# include <io.h>
184# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
185# include <windows.h> 207# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
188# endif 210# endif
189# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
190#endif 212#endif
191 213
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
221
192/* 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 */
193 223
194/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 225#if defined EV_NSIG
196/* use what's provided */ 226/* use what's provided */
197#elif defined (NSIG) 227#elif defined NSIG
198# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 229#elif defined _NSIG
200# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 231#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 233#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 237#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 239#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 243#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 245#else
216# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
219# define EV_NSIG 65 249# define EV_NSIG 65
220#endif 250#endif
221 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
222#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 259# else
226# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
227# endif 261# endif
228#endif 262#endif
229 263
230#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 267# else
234# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
235# endif 269# endif
236#endif 270#endif
237 271
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 274#endif
241 275
242#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 279# else
246# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
247# endif 281# endif
248#endif 282#endif
249 283
250#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 286#endif
253 287
254#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
255# ifdef _WIN32 289# ifdef _WIN32
256# define EV_USE_POLL 0 290# define EV_USE_POLL 0
257# else 291# else
258# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 293# endif
260#endif 294#endif
261 295
262#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 299# else
266# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
267# endif 301# endif
268#endif 302#endif
269 303
… …
275# define EV_USE_PORT 0 309# define EV_USE_PORT 0
276#endif 310#endif
277 311
278#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 315# else
282# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
283# endif 317# endif
284#endif 318#endif
285 319
286#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
288# define EV_PID_HASHSIZE 1
289# else
290# define EV_PID_HASHSIZE 16
291# endif
292#endif 322#endif
293 323
294#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
296# define EV_INOTIFY_HASHSIZE 1
297# else
298# define EV_INOTIFY_HASHSIZE 16
299# endif
300#endif 326#endif
301 327
302#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 331# else
306# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
307# endif 333# endif
308#endif 334#endif
309 335
310#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 339# else
314# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
315# endif 341# endif
316#endif 342#endif
317 343
… …
320# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
322#endif 348#endif
323 349
324#ifndef EV_VERIFY 350#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 352#endif
327 353
328#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 356#endif
331 357
332#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
334#endif 360#endif
335 361
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h> 365# include <sys/syscall.h>
340# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
344# else 370# else
… …
369# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
371#endif 397#endif
372 398
373#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
375# include <sys/select.h> 402# include <sys/select.h>
376# endif 403# endif
377#endif 404#endif
378 405
379#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 407# include <sys/statfs.h>
382# include <sys/inotify.h> 408# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
387# endif 413# endif
388#endif
389
390#if EV_SELECT_IS_WINSOCKET
391# include <winsock.h>
392#endif 414#endif
393 415
394#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
395/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
396# include <stdint.h> 418# include <stdint.h>
… …
402# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
403# else 425# else
404# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
405# endif 427# endif
406# endif 428# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 430#endif
415 431
416#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 434# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
425# else 441# else
426# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
427# endif 443# endif
428# endif 444# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 446
434struct signalfd_siginfo 447struct signalfd_siginfo
435{ 448{
436 uint32_t ssi_signo; 449 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
438}; 451};
439# ifdef __cplusplus
440}
441# endif 452#endif
442#endif
443
444 453
445/**/ 454/**/
446 455
447#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 458#else
450# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
451#endif 460#endif
452 461
453/* 462/*
454 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
455 * It is added to ev_rt_now when scheduling periodics
456 * to ensure progress, time-wise, even when rounding
457 * errors are against us.
458 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 465 */
461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 468
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 516 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
468# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
469#else 523#else
470# define expect(expr,value) (expr) 524 #include <inttypes.h>
471# define noinline
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
473# define inline
474# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
475#endif 539 #endif
540#endif
476 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
479#define inline_size static inline 957#define inline_size ecb_inline
480 958
481#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
482# define inline_speed static noinline 962# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 963#endif
486 964
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 966
489#if EV_MINPRI == EV_MAXPRI 967#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
504 982
505#if EV_USE_REALTIME 983#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 984/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 985/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 987#endif
510 988
511#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 1004# include "ev_win32.c"
527#endif 1005#endif
528 1006
529/*****************************************************************************/ 1007/*****************************************************************************/
530 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
531#if EV_AVOID_STDIO 1099#if EV_AVOID_STDIO
532static void noinline 1100static void noinline ecb_cold
533ev_printerr (const char *msg) 1101ev_printerr (const char *msg)
534{ 1102{
535 write (STDERR_FILENO, msg, strlen (msg)); 1103 write (STDERR_FILENO, msg, strlen (msg));
536} 1104}
537#endif 1105#endif
538 1106
539static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
540 1108
541void 1109void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
543{ 1111{
544 syserr_cb = cb; 1112 syserr_cb = cb;
545} 1113}
546 1114
547static void noinline 1115static void noinline ecb_cold
548ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
549{ 1117{
550 if (!msg) 1118 if (!msg)
551 msg = "(libev) system error"; 1119 msg = "(libev) system error";
552 1120
553 if (syserr_cb) 1121 if (syserr_cb)
554 syserr_cb (msg); 1122 syserr_cb (msg);
555 else 1123 else
556 { 1124 {
557#if EV_AVOID_STDIO 1125#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1126 ev_printerr (msg);
561 ev_printerr (": "); 1127 ev_printerr (": ");
562 ev_printerr (err); 1128 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1129 ev_printerr ("\n");
564#else 1130#else
565 perror (msg); 1131 perror (msg);
566#endif 1132#endif
567 abort (); 1133 abort ();
… …
585 free (ptr); 1151 free (ptr);
586 return 0; 1152 return 0;
587#endif 1153#endif
588} 1154}
589 1155
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
591 1157
592void 1158void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
594{ 1160{
595 alloc = cb; 1161 alloc = cb;
596} 1162}
597 1163
598inline_speed void * 1164inline_speed void *
… …
601 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
602 1168
603 if (!ptr && size) 1169 if (!ptr && size)
604 { 1170 {
605#if EV_AVOID_STDIO 1171#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1173#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1175#endif
610 abort (); 1176 abort ();
611 } 1177 }
612 1178
613 return ptr; 1179 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1197 unsigned char unused;
632#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1200#endif
635#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
637#endif 1206#endif
638} ANFD; 1207} ANFD;
639 1208
640/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
641typedef struct 1210typedef struct
… …
683 #undef VAR 1252 #undef VAR
684 }; 1253 };
685 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
686 1255
687 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1258
690#else 1259#else
691 1260
692 ev_tstamp ev_rt_now; 1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
693 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1263 #include "ev_vars.h"
695 #undef VAR 1264 #undef VAR
696 1265
697 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
698 1267
699#endif 1268#endif
700 1269
701#if EV_MINIMAL < 2 1270#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1274#else
706# define EV_RELEASE_CB (void)0 1275# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1276# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1278#endif
710 1279
711#define EVUNLOOP_RECURSE 0x80 1280#define EVBREAK_RECURSE 0x80
712 1281
713/*****************************************************************************/ 1282/*****************************************************************************/
714 1283
715#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1285ev_tstamp
717ev_time (void) 1286ev_time (void) EV_THROW
718{ 1287{
719#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
720 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
721 { 1290 {
722 struct timespec ts; 1291 struct timespec ts;
… …
746 return ev_time (); 1315 return ev_time ();
747} 1316}
748 1317
749#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
750ev_tstamp 1319ev_tstamp
751ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
752{ 1321{
753 return ev_rt_now; 1322 return ev_rt_now;
754} 1323}
755#endif 1324#endif
756 1325
757void 1326void
758ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
759{ 1328{
760 if (delay > 0.) 1329 if (delay > 0.)
761 { 1330 {
762#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
763 struct timespec ts; 1332 struct timespec ts;
764 1333
765 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1336#elif defined _WIN32
770 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
771#else 1338#else
772 struct timeval tv; 1339 struct timeval tv;
773 1340
774 tv.tv_sec = (time_t)delay;
775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
776
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
781#endif 1346#endif
782 } 1347 }
783} 1348}
784 1349
785/*****************************************************************************/ 1350/*****************************************************************************/
786 1351
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1353
789/* find a suitable new size for the given array, */ 1354/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1355/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1356inline_size int
792array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
793{ 1358{
794 int ncur = cur + 1; 1359 int ncur = cur + 1;
795 1360
796 do 1361 do
797 ncur <<= 1; 1362 ncur <<= 1;
798 while (cnt > ncur); 1363 while (cnt > ncur);
799 1364
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1367 {
803 ncur *= elem; 1368 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1372 }
808 1373
809 return ncur; 1374 return ncur;
810} 1375}
811 1376
812static noinline void * 1377static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1379{
815 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
817} 1382}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1386
822#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
824 { \ 1389 { \
825 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1394 }
830 1395
… …
848pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
849{ 1414{
850} 1415}
851 1416
852void noinline 1417void noinline
853ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
854{ 1419{
855 W w_ = (W)w; 1420 W w_ = (W)w;
856 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
857 1422
858 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
862 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
864 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
865 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
866 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
867} 1434}
868 1435
869inline_speed void 1436inline_speed void
870feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
871{ 1438{
… …
917 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
919} 1486}
920 1487
921void 1488void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
923{ 1490{
924 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
925 fd_event_nocheck (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
926} 1493}
927 1494
… …
930inline_size void 1497inline_size void
931fd_reify (EV_P) 1498fd_reify (EV_P)
932{ 1499{
933 int i; 1500 int i;
934 1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
1526
935 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
936 { 1528 {
937 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
939 ev_io *w; 1531 ev_io *w;
940 1532
941 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
942 1535
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1537
946#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1539 {
949 unsigned long arg; 1540 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1543 anfd->events |= (unsigned char)w->events;
1544
1545 if (o_events != anfd->events)
1546 o_reify = EV__IOFDSET; /* actually |= */
952 } 1547 }
953#endif
954 1548
955 { 1549 if (o_reify & EV__IOFDSET)
956 unsigned char o_events = anfd->events;
957 unsigned char o_reify = anfd->reify;
958
959 anfd->reify = 0;
960 anfd->events = events;
961
962 if (o_events != events || o_reify & EV__IOFDSET)
963 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1551 }
966 1552
967 fdchangecnt = 0; 1553 fdchangecnt = 0;
968} 1554}
969 1555
… …
981 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
982 } 1568 }
983} 1569}
984 1570
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1572inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
988{ 1574{
989 ev_io *w; 1575 ev_io *w;
990 1576
991 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1581 }
996} 1582}
997 1583
998/* check whether the given fd is actually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1585inline_size int ecb_cold
1000fd_valid (int fd) 1586fd_valid (int fd)
1001{ 1587{
1002#ifdef _WIN32 1588#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1590#else
1005 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
1006#endif 1592#endif
1007} 1593}
1008 1594
1009/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
1010static void noinline 1596static void noinline ecb_cold
1011fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
1012{ 1598{
1013 int fd; 1599 int fd;
1014 1600
1015 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
1019} 1605}
1020 1606
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1608static void noinline ecb_cold
1023fd_enomem (EV_P) 1609fd_enomem (EV_P)
1024{ 1610{
1025 int fd; 1611 int fd;
1026 1612
1027 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
… …
1062} 1648}
1063 1649
1064/*****************************************************************************/ 1650/*****************************************************************************/
1065 1651
1066/* 1652/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 1653 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1654 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
1070 */ 1656 */
1071 1657
1072/* 1658/*
… …
1222 1808
1223/*****************************************************************************/ 1809/*****************************************************************************/
1224 1810
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 1812
1227static void noinline 1813static void noinline ecb_cold
1228evpipe_init (EV_P) 1814evpipe_init (EV_P)
1229{ 1815{
1230 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1231 { 1817 {
1232# if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
… …
1254 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 } 1842 }
1257} 1843}
1258 1844
1259inline_size void 1845inline_speed void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{ 1847{
1262 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1263 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1264 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268 1868
1269#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1270 if (evfd >= 0) 1870 if (evfd >= 0)
1271 { 1871 {
1272 uint64_t counter = 1; 1872 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1274 } 1874 }
1275 else 1875 else
1276#endif 1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1277 write (evpipe [1], &dummy, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1278 1888
1279 errno = old_errno; 1889 errno = old_errno;
1280 } 1890 }
1281} 1891}
1282 1892
… …
1285static void 1895static void
1286pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1287{ 1897{
1288 int i; 1898 int i;
1289 1899
1900 if (revents & EV_READ)
1901 {
1290#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1291 if (evfd >= 0) 1903 if (evfd >= 0)
1292 { 1904 {
1293 uint64_t counter; 1905 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1295 } 1907 }
1296 else 1908 else
1297#endif 1909#endif
1298 { 1910 {
1299 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 DWORD flags = 0;
1916 buf.buf = dummy;
1917 buf.len = sizeof (dummy);
1918 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1919#else
1300 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1301 } 1923 }
1302 1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1928
1929#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 1930 if (sig_pending)
1304 { 1931 {
1305 sig_pending = 0; 1932 sig_pending = 0;
1933
1934 ECB_MEMORY_FENCE_RELEASE;
1306 1935
1307 for (i = EV_NSIG - 1; i--; ) 1936 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 1937 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1310 } 1939 }
1940#endif
1311 1941
1312#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1313 if (async_pending) 1943 if (async_pending)
1314 { 1944 {
1315 async_pending = 0; 1945 async_pending = 0;
1946
1947 ECB_MEMORY_FENCE_RELEASE;
1316 1948
1317 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1318 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1319 { 1951 {
1320 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
… …
1324#endif 1956#endif
1325} 1957}
1326 1958
1327/*****************************************************************************/ 1959/*****************************************************************************/
1328 1960
1961void
1962ev_feed_signal (int signum) EV_THROW
1963{
1964#if EV_MULTIPLICITY
1965 EV_P = signals [signum - 1].loop;
1966
1967 if (!EV_A)
1968 return;
1969#endif
1970
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending);
1976}
1977
1329static void 1978static void
1330ev_sighandler (int signum) 1979ev_sighandler (int signum)
1331{ 1980{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 1981#ifdef _WIN32
1337 signal (signum, ev_sighandler); 1982 signal (signum, ev_sighandler);
1338#endif 1983#endif
1339 1984
1340 signals [signum - 1].pending = 1; 1985 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 1986}
1343 1987
1344void noinline 1988void noinline
1345ev_feed_signal_event (EV_P_ int signum) 1989ev_feed_signal_event (EV_P_ int signum) EV_THROW
1346{ 1990{
1347 WL w; 1991 WL w;
1348 1992
1349 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1993 if (expect_false (signum <= 0 || signum > EV_NSIG))
1350 return; 1994 return;
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2047child_reap (EV_P_ int chain, int pid, int status)
1404{ 2048{
1405 ev_child *w; 2049 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2050 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2051
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2052 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2053 {
1410 if ((w->pid == pid || !w->pid) 2054 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2055 && (!traced || (w->flags & 1)))
1412 { 2056 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2057 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2082 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2083 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2084 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2085
1442 child_reap (EV_A_ pid, pid, status); 2086 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2087 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2088 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2089}
1446 2090
1447#endif 2091#endif
1448 2092
1449/*****************************************************************************/ 2093/*****************************************************************************/
1450 2094
2095#if EV_USE_IOCP
2096# include "ev_iocp.c"
2097#endif
1451#if EV_USE_PORT 2098#if EV_USE_PORT
1452# include "ev_port.c" 2099# include "ev_port.c"
1453#endif 2100#endif
1454#if EV_USE_KQUEUE 2101#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2102# include "ev_kqueue.c"
… …
1462#endif 2109#endif
1463#if EV_USE_SELECT 2110#if EV_USE_SELECT
1464# include "ev_select.c" 2111# include "ev_select.c"
1465#endif 2112#endif
1466 2113
1467int 2114int ecb_cold
1468ev_version_major (void) 2115ev_version_major (void) EV_THROW
1469{ 2116{
1470 return EV_VERSION_MAJOR; 2117 return EV_VERSION_MAJOR;
1471} 2118}
1472 2119
1473int 2120int ecb_cold
1474ev_version_minor (void) 2121ev_version_minor (void) EV_THROW
1475{ 2122{
1476 return EV_VERSION_MINOR; 2123 return EV_VERSION_MINOR;
1477} 2124}
1478 2125
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2126/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2127int inline_size ecb_cold
1481enable_secure (void) 2128enable_secure (void)
1482{ 2129{
1483#ifdef _WIN32 2130#ifdef _WIN32
1484 return 0; 2131 return 0;
1485#else 2132#else
1486 return getuid () != geteuid () 2133 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2134 || getgid () != getegid ();
1488#endif 2135#endif
1489} 2136}
1490 2137
1491unsigned int 2138unsigned int ecb_cold
1492ev_supported_backends (void) 2139ev_supported_backends (void) EV_THROW
1493{ 2140{
1494 unsigned int flags = 0; 2141 unsigned int flags = 0;
1495 2142
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1497 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2148
1502 return flags; 2149 return flags;
1503} 2150}
1504 2151
1505unsigned int 2152unsigned int ecb_cold
1506ev_recommended_backends (void) 2153ev_recommended_backends (void) EV_THROW
1507{ 2154{
1508 unsigned int flags = ev_supported_backends (); 2155 unsigned int flags = ev_supported_backends ();
1509 2156
1510#ifndef __NetBSD__ 2157#ifndef __NetBSD__
1511 /* kqueue is borked on everything but netbsd apparently */ 2158 /* kqueue is borked on everything but netbsd apparently */
… …
1515#ifdef __APPLE__ 2162#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2163 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2164 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2165 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2166#endif
2167#ifdef __FreeBSD__
2168 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2169#endif
1520 2170
1521 return flags; 2171 return flags;
1522} 2172}
1523 2173
2174unsigned int ecb_cold
2175ev_embeddable_backends (void) EV_THROW
2176{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178
2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2181 flags &= ~EVBACKEND_EPOLL;
2182
2183 return flags;
2184}
2185
1524unsigned int 2186unsigned int
1525ev_embeddable_backends (void) 2187ev_backend (EV_P) EV_THROW
1526{ 2188{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2189 return backend;
1528
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1530 /* please fix it and tell me how to detect the fix */
1531 flags &= ~EVBACKEND_EPOLL;
1532
1533 return flags;
1534} 2190}
1535 2191
2192#if EV_FEATURE_API
1536unsigned int 2193unsigned int
1537ev_backend (EV_P) 2194ev_iteration (EV_P) EV_THROW
1538{ 2195{
1539 return backend; 2196 return loop_count;
1540} 2197}
1541 2198
1542#if EV_MINIMAL < 2
1543unsigned int 2199unsigned int
1544ev_loop_count (EV_P) 2200ev_depth (EV_P) EV_THROW
1545{
1546 return loop_count;
1547}
1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{ 2201{
1552 return loop_depth; 2202 return loop_depth;
1553} 2203}
1554 2204
1555void 2205void
1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1557{ 2207{
1558 io_blocktime = interval; 2208 io_blocktime = interval;
1559} 2209}
1560 2210
1561void 2211void
1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1563{ 2213{
1564 timeout_blocktime = interval; 2214 timeout_blocktime = interval;
1565} 2215}
1566 2216
1567void 2217void
1568ev_set_userdata (EV_P_ void *data) 2218ev_set_userdata (EV_P_ void *data) EV_THROW
1569{ 2219{
1570 userdata = data; 2220 userdata = data;
1571} 2221}
1572 2222
1573void * 2223void *
1574ev_userdata (EV_P) 2224ev_userdata (EV_P) EV_THROW
1575{ 2225{
1576 return userdata; 2226 return userdata;
1577} 2227}
1578 2228
2229void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1580{ 2231{
1581 invoke_cb = invoke_pending_cb; 2232 invoke_cb = invoke_pending_cb;
1582} 2233}
1583 2234
2235void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1585{ 2237{
1586 release_cb = release; 2238 release_cb = release;
1587 acquire_cb = acquire; 2239 acquire_cb = acquire;
1588} 2240}
1589#endif 2241#endif
1590 2242
1591/* initialise a loop structure, must be zero-initialised */ 2243/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2244static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2245loop_init (EV_P_ unsigned int flags) EV_THROW
1594{ 2246{
1595 if (!backend) 2247 if (!backend)
1596 { 2248 {
2249 origflags = flags;
2250
1597#if EV_USE_REALTIME 2251#if EV_USE_REALTIME
1598 if (!have_realtime) 2252 if (!have_realtime)
1599 { 2253 {
1600 struct timespec ts; 2254 struct timespec ts;
1601 2255
… …
1623 if (!(flags & EVFLAG_NOENV) 2277 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2278 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2279 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2280 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2281
1628 ev_rt_now = ev_time (); 2282 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2283 mn_now = get_clock ();
1630 now_floor = mn_now; 2284 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2285 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2286#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2287 invoke_cb = ev_invoke_pending;
1634#endif 2288#endif
1635 2289
1636 io_blocktime = 0.; 2290 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2291 timeout_blocktime = 0.;
1638 backend = 0; 2292 backend = 0;
1639 backend_fd = -1; 2293 backend_fd = -1;
1640 sig_pending = 0; 2294 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2295#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2296 async_pending = 0;
1643#endif 2297#endif
2298 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0;
1644#if EV_USE_INOTIFY 2300#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2302#endif
1647#if EV_USE_SIGNALFD 2303#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2305#endif
1650 2306
1651 if (!(flags & 0x0000ffffU)) 2307 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2308 flags |= ev_recommended_backends ();
1653 2309
2310#if EV_USE_IOCP
2311 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2312#endif
1654#if EV_USE_PORT 2313#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2314 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2315#endif
1657#if EV_USE_KQUEUE 2316#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2334#endif
1676 } 2335 }
1677} 2336}
1678 2337
1679/* free up a loop structure */ 2338/* free up a loop structure */
1680static void noinline 2339void ecb_cold
1681loop_destroy (EV_P) 2340ev_loop_destroy (EV_P)
1682{ 2341{
1683 int i; 2342 int i;
2343
2344#if EV_MULTIPLICITY
2345 /* mimic free (0) */
2346 if (!EV_A)
2347 return;
2348#endif
2349
2350#if EV_CLEANUP_ENABLE
2351 /* queue cleanup watchers (and execute them) */
2352 if (expect_false (cleanupcnt))
2353 {
2354 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2355 EV_INVOKE_PENDING;
2356 }
2357#endif
2358
2359#if EV_CHILD_ENABLE
2360 if (ev_is_active (&childev))
2361 {
2362 ev_ref (EV_A); /* child watcher */
2363 ev_signal_stop (EV_A_ &childev);
2364 }
2365#endif
1684 2366
1685 if (ev_is_active (&pipe_w)) 2367 if (ev_is_active (&pipe_w))
1686 { 2368 {
1687 /*ev_ref (EV_A);*/ 2369 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2370 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1710#endif 2392#endif
1711 2393
1712 if (backend_fd >= 0) 2394 if (backend_fd >= 0)
1713 close (backend_fd); 2395 close (backend_fd);
1714 2396
2397#if EV_USE_IOCP
2398 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2399#endif
1715#if EV_USE_PORT 2400#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2401 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2402#endif
1718#if EV_USE_KQUEUE 2403#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2404 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2431 array_free (periodic, EMPTY);
1747#endif 2432#endif
1748#if EV_FORK_ENABLE 2433#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2434 array_free (fork, EMPTY);
1750#endif 2435#endif
2436#if EV_CLEANUP_ENABLE
2437 array_free (cleanup, EMPTY);
2438#endif
1751 array_free (prepare, EMPTY); 2439 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2440 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2441#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2442 array_free (async, EMPTY);
1755#endif 2443#endif
1756 2444
1757 backend = 0; 2445 backend = 0;
2446
2447#if EV_MULTIPLICITY
2448 if (ev_is_default_loop (EV_A))
2449#endif
2450 ev_default_loop_ptr = 0;
2451#if EV_MULTIPLICITY
2452 else
2453 ev_free (EV_A);
2454#endif
1758} 2455}
1759 2456
1760#if EV_USE_INOTIFY 2457#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2458inline_size void infy_fork (EV_P);
1762#endif 2459#endif
… …
1777 infy_fork (EV_A); 2474 infy_fork (EV_A);
1778#endif 2475#endif
1779 2476
1780 if (ev_is_active (&pipe_w)) 2477 if (ev_is_active (&pipe_w))
1781 { 2478 {
1782 /* this "locks" the handlers against writing to the pipe */ 2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1788 2480
1789 ev_ref (EV_A); 2481 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2482 ev_io_stop (EV_A_ &pipe_w);
1791 2483
1792#if EV_USE_EVENTFD 2484#if EV_USE_EVENTFD
… …
1810 postfork = 0; 2502 postfork = 0;
1811} 2503}
1812 2504
1813#if EV_MULTIPLICITY 2505#if EV_MULTIPLICITY
1814 2506
1815struct ev_loop * 2507struct ev_loop * ecb_cold
1816ev_loop_new (unsigned int flags) 2508ev_loop_new (unsigned int flags) EV_THROW
1817{ 2509{
1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1819 2511
1820 memset (EV_A, 0, sizeof (struct ev_loop)); 2512 memset (EV_A, 0, sizeof (struct ev_loop));
1821 loop_init (EV_A_ flags); 2513 loop_init (EV_A_ flags);
1822 2514
1823 if (ev_backend (EV_A)) 2515 if (ev_backend (EV_A))
1824 return EV_A; 2516 return EV_A;
1825 2517
2518 ev_free (EV_A);
1826 return 0; 2519 return 0;
1827} 2520}
1828 2521
1829void
1830ev_loop_destroy (EV_P)
1831{
1832 loop_destroy (EV_A);
1833 ev_free (loop);
1834}
1835
1836void
1837ev_loop_fork (EV_P)
1838{
1839 postfork = 1; /* must be in line with ev_default_fork */
1840}
1841#endif /* multiplicity */ 2522#endif /* multiplicity */
1842 2523
1843#if EV_VERIFY 2524#if EV_VERIFY
1844static void noinline 2525static void noinline ecb_cold
1845verify_watcher (EV_P_ W w) 2526verify_watcher (EV_P_ W w)
1846{ 2527{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848 2529
1849 if (w->pending) 2530 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851} 2532}
1852 2533
1853static void noinline 2534static void noinline ecb_cold
1854verify_heap (EV_P_ ANHE *heap, int N) 2535verify_heap (EV_P_ ANHE *heap, int N)
1855{ 2536{
1856 int i; 2537 int i;
1857 2538
1858 for (i = HEAP0; i < N + HEAP0; ++i) 2539 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1863 2544
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 } 2546 }
1866} 2547}
1867 2548
1868static void noinline 2549static void noinline ecb_cold
1869array_verify (EV_P_ W *ws, int cnt) 2550array_verify (EV_P_ W *ws, int cnt)
1870{ 2551{
1871 while (cnt--) 2552 while (cnt--)
1872 { 2553 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]); 2555 verify_watcher (EV_A_ ws [cnt]);
1875 } 2556 }
1876} 2557}
1877#endif 2558#endif
1878 2559
1879#if EV_MINIMAL < 2 2560#if EV_FEATURE_API
1880void 2561void ecb_cold
1881ev_loop_verify (EV_P) 2562ev_verify (EV_P) EV_THROW
1882{ 2563{
1883#if EV_VERIFY 2564#if EV_VERIFY
1884 int i; 2565 int i;
1885 WL w; 2566 WL w, w2;
1886 2567
1887 assert (activecnt >= -1); 2568 assert (activecnt >= -1);
1888 2569
1889 assert (fdchangemax >= fdchangecnt); 2570 assert (fdchangemax >= fdchangecnt);
1890 for (i = 0; i < fdchangecnt; ++i) 2571 for (i = 0; i < fdchangecnt; ++i)
1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2572 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1892 2573
1893 assert (anfdmax >= 0); 2574 assert (anfdmax >= 0);
1894 for (i = 0; i < anfdmax; ++i) 2575 for (i = 0; i < anfdmax; ++i)
2576 {
2577 int j = 0;
2578
1895 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
1896 { 2580 {
1897 verify_watcher (EV_A_ (W)w); 2581 verify_watcher (EV_A_ (W)w);
2582
2583 if (j++ & 1)
2584 {
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 w2 = w2->next;
2587 }
2588
1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2589 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2590 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1900 } 2591 }
2592 }
1901 2593
1902 assert (timermax >= timercnt); 2594 assert (timermax >= timercnt);
1903 verify_heap (EV_A_ timers, timercnt); 2595 verify_heap (EV_A_ timers, timercnt);
1904 2596
1905#if EV_PERIODIC_ENABLE 2597#if EV_PERIODIC_ENABLE
… …
1920#if EV_FORK_ENABLE 2612#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt); 2613 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt); 2614 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif 2615#endif
1924 2616
2617#if EV_CLEANUP_ENABLE
2618 assert (cleanupmax >= cleanupcnt);
2619 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2620#endif
2621
1925#if EV_ASYNC_ENABLE 2622#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt); 2623 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt); 2624 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif 2625#endif
1929 2626
… …
1937 array_verify (EV_A_ (W *)checks, checkcnt); 2634 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif 2635#endif
1939 2636
1940# if 0 2637# if 0
1941#if EV_CHILD_ENABLE 2638#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2639 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2640 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif 2641#endif
1945# endif 2642# endif
1946#endif 2643#endif
1947} 2644}
1948#endif 2645#endif
1949 2646
1950#if EV_MULTIPLICITY 2647#if EV_MULTIPLICITY
1951struct ev_loop * 2648struct ev_loop * ecb_cold
1952ev_default_loop_init (unsigned int flags)
1953#else 2649#else
1954int 2650int
2651#endif
1955ev_default_loop (unsigned int flags) 2652ev_default_loop (unsigned int flags) EV_THROW
1956#endif
1957{ 2653{
1958 if (!ev_default_loop_ptr) 2654 if (!ev_default_loop_ptr)
1959 { 2655 {
1960#if EV_MULTIPLICITY 2656#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr = &default_loop_struct; 2657 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1980 2676
1981 return ev_default_loop_ptr; 2677 return ev_default_loop_ptr;
1982} 2678}
1983 2679
1984void 2680void
1985ev_default_destroy (void) 2681ev_loop_fork (EV_P) EV_THROW
1986{ 2682{
1987#if EV_MULTIPLICITY
1988 EV_P = ev_default_loop_ptr;
1989#endif
1990
1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1994 ev_ref (EV_A); /* child watcher */
1995 ev_signal_stop (EV_A_ &childev);
1996#endif
1997
1998 loop_destroy (EV_A);
1999}
2000
2001void
2002ev_default_fork (void)
2003{
2004#if EV_MULTIPLICITY
2005 EV_P = ev_default_loop_ptr;
2006#endif
2007
2008 postfork = 1; /* must be in line with ev_loop_fork */ 2683 postfork = 1; /* must be in line with ev_default_fork */
2009} 2684}
2010 2685
2011/*****************************************************************************/ 2686/*****************************************************************************/
2012 2687
2013void 2688void
… …
2015{ 2690{
2016 EV_CB_INVOKE ((W)w, revents); 2691 EV_CB_INVOKE ((W)w, revents);
2017} 2692}
2018 2693
2019unsigned int 2694unsigned int
2020ev_pending_count (EV_P) 2695ev_pending_count (EV_P) EV_THROW
2021{ 2696{
2022 int pri; 2697 int pri;
2023 unsigned int count = 0; 2698 unsigned int count = 0;
2024 2699
2025 for (pri = NUMPRI; pri--; ) 2700 for (pri = NUMPRI; pri--; )
… …
2029} 2704}
2030 2705
2031void noinline 2706void noinline
2032ev_invoke_pending (EV_P) 2707ev_invoke_pending (EV_P)
2033{ 2708{
2034 int pri; 2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2035
2036 for (pri = NUMPRI; pri--; )
2037 while (pendingcnt [pri]) 2710 while (pendingcnt [pendingpri])
2038 { 2711 {
2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2040
2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
2043 2713
2044 p->w->pending = 0; 2714 p->w->pending = 0;
2045 EV_CB_INVOKE (p->w, p->events); 2715 EV_CB_INVOKE (p->w, p->events);
2046 EV_FREQUENT_CHECK; 2716 EV_FREQUENT_CHECK;
2047 } 2717 }
… …
2104 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w); 2775 feed_reverse (EV_A_ (W)w);
2106 } 2776 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2777 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108 2778
2109 feed_reverse_done (EV_A_ EV_TIMEOUT); 2779 feed_reverse_done (EV_A_ EV_TIMER);
2110 } 2780 }
2111} 2781}
2112 2782
2113#if EV_PERIODIC_ENABLE 2783#if EV_PERIODIC_ENABLE
2784
2785static void noinline
2786periodic_recalc (EV_P_ ev_periodic *w)
2787{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790
2791 /* the above almost always errs on the low side */
2792 while (at <= ev_rt_now)
2793 {
2794 ev_tstamp nat = at + w->interval;
2795
2796 /* when resolution fails us, we use ev_rt_now */
2797 if (expect_false (nat == at))
2798 {
2799 at = ev_rt_now;
2800 break;
2801 }
2802
2803 at = nat;
2804 }
2805
2806 ev_at (w) = at;
2807}
2808
2114/* make periodics pending */ 2809/* make periodics pending */
2115inline_size void 2810inline_size void
2116periodics_reify (EV_P) 2811periodics_reify (EV_P)
2117{ 2812{
2118 EV_FREQUENT_CHECK; 2813 EV_FREQUENT_CHECK;
… …
2137 ANHE_at_cache (periodics [HEAP0]); 2832 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 2833 downheap (periodics, periodiccnt, HEAP0);
2139 } 2834 }
2140 else if (w->interval) 2835 else if (w->interval)
2141 { 2836 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2837 periodic_recalc (EV_A_ w);
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]); 2838 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 2839 downheap (periodics, periodiccnt, HEAP0);
2158 } 2840 }
2159 else 2841 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2167 feed_reverse_done (EV_A_ EV_PERIODIC); 2849 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 } 2850 }
2169} 2851}
2170 2852
2171/* simply recalculate all periodics */ 2853/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2854/* TODO: maybe ensure that at least one event happens when jumping forward? */
2173static void noinline 2855static void noinline ecb_cold
2174periodics_reschedule (EV_P) 2856periodics_reschedule (EV_P)
2175{ 2857{
2176 int i; 2858 int i;
2177 2859
2178 /* adjust periodics after time jump */ 2860 /* adjust periodics after time jump */
… …
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2863 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182 2864
2183 if (w->reschedule_cb) 2865 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2866 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval) 2867 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2868 periodic_recalc (EV_A_ w);
2187 2869
2188 ANHE_at_cache (periodics [i]); 2870 ANHE_at_cache (periodics [i]);
2189 } 2871 }
2190 2872
2191 reheap (periodics, periodiccnt); 2873 reheap (periodics, periodiccnt);
2192} 2874}
2193#endif 2875#endif
2194 2876
2195/* adjust all timers by a given offset */ 2877/* adjust all timers by a given offset */
2196static void noinline 2878static void noinline ecb_cold
2197timers_reschedule (EV_P_ ev_tstamp adjust) 2879timers_reschedule (EV_P_ ev_tstamp adjust)
2198{ 2880{
2199 int i; 2881 int i;
2200 2882
2201 for (i = 0; i < timercnt; ++i) 2883 for (i = 0; i < timercnt; ++i)
… …
2238 * doesn't hurt either as we only do this on time-jumps or 2920 * doesn't hurt either as we only do this on time-jumps or
2239 * in the unlikely event of having been preempted here. 2921 * in the unlikely event of having been preempted here.
2240 */ 2922 */
2241 for (i = 4; --i; ) 2923 for (i = 4; --i; )
2242 { 2924 {
2925 ev_tstamp diff;
2243 rtmn_diff = ev_rt_now - mn_now; 2926 rtmn_diff = ev_rt_now - mn_now;
2244 2927
2928 diff = odiff - rtmn_diff;
2929
2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2930 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2246 return; /* all is well */ 2931 return; /* all is well */
2247 2932
2248 ev_rt_now = ev_time (); 2933 ev_rt_now = ev_time ();
2249 mn_now = get_clock (); 2934 mn_now = get_clock ();
2250 now_floor = mn_now; 2935 now_floor = mn_now;
… …
2272 2957
2273 mn_now = ev_rt_now; 2958 mn_now = ev_rt_now;
2274 } 2959 }
2275} 2960}
2276 2961
2277void 2962int
2278ev_loop (EV_P_ int flags) 2963ev_run (EV_P_ int flags)
2279{ 2964{
2280#if EV_MINIMAL < 2 2965#if EV_FEATURE_API
2281 ++loop_depth; 2966 ++loop_depth;
2282#endif 2967#endif
2283 2968
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2969 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2285 2970
2286 loop_done = EVUNLOOP_CANCEL; 2971 loop_done = EVBREAK_CANCEL;
2287 2972
2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2973 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2289 2974
2290 do 2975 do
2291 { 2976 {
2292#if EV_VERIFY >= 2 2977#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A); 2978 ev_verify (EV_A);
2294#endif 2979#endif
2295 2980
2296#ifndef _WIN32 2981#ifndef _WIN32
2297 if (expect_false (curpid)) /* penalise the forking check even more */ 2982 if (expect_false (curpid)) /* penalise the forking check even more */
2298 if (expect_false (getpid () != curpid)) 2983 if (expect_false (getpid () != curpid))
… …
2334 /* calculate blocking time */ 3019 /* calculate blocking time */
2335 { 3020 {
2336 ev_tstamp waittime = 0.; 3021 ev_tstamp waittime = 0.;
2337 ev_tstamp sleeptime = 0.; 3022 ev_tstamp sleeptime = 0.;
2338 3023
3024 /* remember old timestamp for io_blocktime calculation */
3025 ev_tstamp prev_mn_now = mn_now;
3026
3027 /* update time to cancel out callback processing overhead */
3028 time_update (EV_A_ 1e100);
3029
3030 /* from now on, we want a pipe-wake-up */
3031 pipe_write_wanted = 1;
3032
3033 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3034
2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3035 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2340 { 3036 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
2344 /* update time to cancel out callback processing overhead */
2345 time_update (EV_A_ 1e100);
2346
2347 waittime = MAX_BLOCKTIME; 3037 waittime = MAX_BLOCKTIME;
2348 3038
2349 if (timercnt) 3039 if (timercnt)
2350 { 3040 {
2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2352 if (waittime > to) waittime = to; 3042 if (waittime > to) waittime = to;
2353 } 3043 }
2354 3044
2355#if EV_PERIODIC_ENABLE 3045#if EV_PERIODIC_ENABLE
2356 if (periodiccnt) 3046 if (periodiccnt)
2357 { 3047 {
2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2359 if (waittime > to) waittime = to; 3049 if (waittime > to) waittime = to;
2360 } 3050 }
2361#endif 3051#endif
2362 3052
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3053 /* don't let timeouts decrease the waittime below timeout_blocktime */
2364 if (expect_false (waittime < timeout_blocktime)) 3054 if (expect_false (waittime < timeout_blocktime))
2365 waittime = timeout_blocktime; 3055 waittime = timeout_blocktime;
3056
3057 /* at this point, we NEED to wait, so we have to ensure */
3058 /* to pass a minimum nonzero value to the backend */
3059 if (expect_false (waittime < backend_mintime))
3060 waittime = backend_mintime;
2366 3061
2367 /* extra check because io_blocktime is commonly 0 */ 3062 /* extra check because io_blocktime is commonly 0 */
2368 if (expect_false (io_blocktime)) 3063 if (expect_false (io_blocktime))
2369 { 3064 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3065 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371 3066
2372 if (sleeptime > waittime - backend_fudge) 3067 if (sleeptime > waittime - backend_mintime)
2373 sleeptime = waittime - backend_fudge; 3068 sleeptime = waittime - backend_mintime;
2374 3069
2375 if (expect_true (sleeptime > 0.)) 3070 if (expect_true (sleeptime > 0.))
2376 { 3071 {
2377 ev_sleep (sleeptime); 3072 ev_sleep (sleeptime);
2378 waittime -= sleeptime; 3073 waittime -= sleeptime;
2379 } 3074 }
2380 } 3075 }
2381 } 3076 }
2382 3077
2383#if EV_MINIMAL < 2 3078#if EV_FEATURE_API
2384 ++loop_count; 3079 ++loop_count;
2385#endif 3080#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3081 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2387 backend_poll (EV_A_ waittime); 3082 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3084
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086
3087 if (pipe_write_skipped)
3088 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 }
3092
2389 3093
2390 /* update ev_rt_now, do magic */ 3094 /* update ev_rt_now, do magic */
2391 time_update (EV_A_ waittime + sleeptime); 3095 time_update (EV_A_ waittime + sleeptime);
2392 } 3096 }
2393 3097
… …
2411 EV_INVOKE_PENDING; 3115 EV_INVOKE_PENDING;
2412 } 3116 }
2413 while (expect_true ( 3117 while (expect_true (
2414 activecnt 3118 activecnt
2415 && !loop_done 3119 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3120 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2417 )); 3121 ));
2418 3122
2419 if (loop_done == EVUNLOOP_ONE) 3123 if (loop_done == EVBREAK_ONE)
2420 loop_done = EVUNLOOP_CANCEL; 3124 loop_done = EVBREAK_CANCEL;
2421 3125
2422#if EV_MINIMAL < 2 3126#if EV_FEATURE_API
2423 --loop_depth; 3127 --loop_depth;
2424#endif 3128#endif
3129
3130 return activecnt;
2425} 3131}
2426 3132
2427void 3133void
2428ev_unloop (EV_P_ int how) 3134ev_break (EV_P_ int how) EV_THROW
2429{ 3135{
2430 loop_done = how; 3136 loop_done = how;
2431} 3137}
2432 3138
2433void 3139void
2434ev_ref (EV_P) 3140ev_ref (EV_P) EV_THROW
2435{ 3141{
2436 ++activecnt; 3142 ++activecnt;
2437} 3143}
2438 3144
2439void 3145void
2440ev_unref (EV_P) 3146ev_unref (EV_P) EV_THROW
2441{ 3147{
2442 --activecnt; 3148 --activecnt;
2443} 3149}
2444 3150
2445void 3151void
2446ev_now_update (EV_P) 3152ev_now_update (EV_P) EV_THROW
2447{ 3153{
2448 time_update (EV_A_ 1e100); 3154 time_update (EV_A_ 1e100);
2449} 3155}
2450 3156
2451void 3157void
2452ev_suspend (EV_P) 3158ev_suspend (EV_P) EV_THROW
2453{ 3159{
2454 ev_now_update (EV_A); 3160 ev_now_update (EV_A);
2455} 3161}
2456 3162
2457void 3163void
2458ev_resume (EV_P) 3164ev_resume (EV_P) EV_THROW
2459{ 3165{
2460 ev_tstamp mn_prev = mn_now; 3166 ev_tstamp mn_prev = mn_now;
2461 3167
2462 ev_now_update (EV_A); 3168 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev); 3169 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2502 w->pending = 0; 3208 w->pending = 0;
2503 } 3209 }
2504} 3210}
2505 3211
2506int 3212int
2507ev_clear_pending (EV_P_ void *w) 3213ev_clear_pending (EV_P_ void *w) EV_THROW
2508{ 3214{
2509 W w_ = (W)w; 3215 W w_ = (W)w;
2510 int pending = w_->pending; 3216 int pending = w_->pending;
2511 3217
2512 if (expect_true (pending)) 3218 if (expect_true (pending))
… …
2545} 3251}
2546 3252
2547/*****************************************************************************/ 3253/*****************************************************************************/
2548 3254
2549void noinline 3255void noinline
2550ev_io_start (EV_P_ ev_io *w) 3256ev_io_start (EV_P_ ev_io *w) EV_THROW
2551{ 3257{
2552 int fd = w->fd; 3258 int fd = w->fd;
2553 3259
2554 if (expect_false (ev_is_active (w))) 3260 if (expect_false (ev_is_active (w)))
2555 return; 3261 return;
… …
2561 3267
2562 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3269 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2564 wlist_add (&anfds[fd].head, (WL)w); 3270 wlist_add (&anfds[fd].head, (WL)w);
2565 3271
3272 /* common bug, apparently */
3273 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3274
2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3275 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2567 w->events &= ~EV__IOFDSET; 3276 w->events &= ~EV__IOFDSET;
2568 3277
2569 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2570} 3279}
2571 3280
2572void noinline 3281void noinline
2573ev_io_stop (EV_P_ ev_io *w) 3282ev_io_stop (EV_P_ ev_io *w) EV_THROW
2574{ 3283{
2575 clear_pending (EV_A_ (W)w); 3284 clear_pending (EV_A_ (W)w);
2576 if (expect_false (!ev_is_active (w))) 3285 if (expect_false (!ev_is_active (w)))
2577 return; 3286 return;
2578 3287
… …
2581 EV_FREQUENT_CHECK; 3290 EV_FREQUENT_CHECK;
2582 3291
2583 wlist_del (&anfds[w->fd].head, (WL)w); 3292 wlist_del (&anfds[w->fd].head, (WL)w);
2584 ev_stop (EV_A_ (W)w); 3293 ev_stop (EV_A_ (W)w);
2585 3294
2586 fd_change (EV_A_ w->fd, 1); 3295 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2587 3296
2588 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
2589} 3298}
2590 3299
2591void noinline 3300void noinline
2592ev_timer_start (EV_P_ ev_timer *w) 3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2593{ 3302{
2594 if (expect_false (ev_is_active (w))) 3303 if (expect_false (ev_is_active (w)))
2595 return; 3304 return;
2596 3305
2597 ev_at (w) += mn_now; 3306 ev_at (w) += mn_now;
… …
2611 3320
2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2613} 3322}
2614 3323
2615void noinline 3324void noinline
2616ev_timer_stop (EV_P_ ev_timer *w) 3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2617{ 3326{
2618 clear_pending (EV_A_ (W)w); 3327 clear_pending (EV_A_ (W)w);
2619 if (expect_false (!ev_is_active (w))) 3328 if (expect_false (!ev_is_active (w)))
2620 return; 3329 return;
2621 3330
… …
2641 3350
2642 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2643} 3352}
2644 3353
2645void noinline 3354void noinline
2646ev_timer_again (EV_P_ ev_timer *w) 3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2647{ 3356{
2648 EV_FREQUENT_CHECK; 3357 EV_FREQUENT_CHECK;
3358
3359 clear_pending (EV_A_ (W)w);
2649 3360
2650 if (ev_is_active (w)) 3361 if (ev_is_active (w))
2651 { 3362 {
2652 if (w->repeat) 3363 if (w->repeat)
2653 { 3364 {
… …
2666 3377
2667 EV_FREQUENT_CHECK; 3378 EV_FREQUENT_CHECK;
2668} 3379}
2669 3380
2670ev_tstamp 3381ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w) 3382ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2672{ 3383{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2674} 3385}
2675 3386
2676#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2677void noinline 3388void noinline
2678ev_periodic_start (EV_P_ ev_periodic *w) 3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2679{ 3390{
2680 if (expect_false (ev_is_active (w))) 3391 if (expect_false (ev_is_active (w)))
2681 return; 3392 return;
2682 3393
2683 if (w->reschedule_cb) 3394 if (w->reschedule_cb)
2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3395 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2685 else if (w->interval) 3396 else if (w->interval)
2686 { 3397 {
2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3398 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2688 /* this formula differs from the one in periodic_reify because we do not always round up */ 3399 periodic_recalc (EV_A_ w);
2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2690 } 3400 }
2691 else 3401 else
2692 ev_at (w) = w->offset; 3402 ev_at (w) = w->offset;
2693 3403
2694 EV_FREQUENT_CHECK; 3404 EV_FREQUENT_CHECK;
… …
2704 3414
2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2706} 3416}
2707 3417
2708void noinline 3418void noinline
2709ev_periodic_stop (EV_P_ ev_periodic *w) 3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2710{ 3420{
2711 clear_pending (EV_A_ (W)w); 3421 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3422 if (expect_false (!ev_is_active (w)))
2713 return; 3423 return;
2714 3424
… …
2732 3442
2733 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2734} 3444}
2735 3445
2736void noinline 3446void noinline
2737ev_periodic_again (EV_P_ ev_periodic *w) 3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2738{ 3448{
2739 /* TODO: use adjustheap and recalculation */ 3449 /* TODO: use adjustheap and recalculation */
2740 ev_periodic_stop (EV_A_ w); 3450 ev_periodic_stop (EV_A_ w);
2741 ev_periodic_start (EV_A_ w); 3451 ev_periodic_start (EV_A_ w);
2742} 3452}
… …
2747#endif 3457#endif
2748 3458
2749#if EV_SIGNAL_ENABLE 3459#if EV_SIGNAL_ENABLE
2750 3460
2751void noinline 3461void noinline
2752ev_signal_start (EV_P_ ev_signal *w) 3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2753{ 3463{
2754 if (expect_false (ev_is_active (w))) 3464 if (expect_false (ev_is_active (w)))
2755 return; 3465 return;
2756 3466
2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3467 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2815 sa.sa_handler = ev_sighandler; 3525 sa.sa_handler = ev_sighandler;
2816 sigfillset (&sa.sa_mask); 3526 sigfillset (&sa.sa_mask);
2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3527 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2818 sigaction (w->signum, &sa, 0); 3528 sigaction (w->signum, &sa, 0);
2819 3529
3530 if (origflags & EVFLAG_NOSIGMASK)
3531 {
2820 sigemptyset (&sa.sa_mask); 3532 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum); 3533 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3534 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3535 }
2823#endif 3536#endif
2824 } 3537 }
2825 3538
2826 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2827} 3540}
2828 3541
2829void noinline 3542void noinline
2830ev_signal_stop (EV_P_ ev_signal *w) 3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2831{ 3544{
2832 clear_pending (EV_A_ (W)w); 3545 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3546 if (expect_false (!ev_is_active (w)))
2834 return; 3547 return;
2835 3548
… …
2866#endif 3579#endif
2867 3580
2868#if EV_CHILD_ENABLE 3581#if EV_CHILD_ENABLE
2869 3582
2870void 3583void
2871ev_child_start (EV_P_ ev_child *w) 3584ev_child_start (EV_P_ ev_child *w) EV_THROW
2872{ 3585{
2873#if EV_MULTIPLICITY 3586#if EV_MULTIPLICITY
2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3587 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2875#endif 3588#endif
2876 if (expect_false (ev_is_active (w))) 3589 if (expect_false (ev_is_active (w)))
2877 return; 3590 return;
2878 3591
2879 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2880 3593
2881 ev_start (EV_A_ (W)w, 1); 3594 ev_start (EV_A_ (W)w, 1);
2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3595 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2883 3596
2884 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2885} 3598}
2886 3599
2887void 3600void
2888ev_child_stop (EV_P_ ev_child *w) 3601ev_child_stop (EV_P_ ev_child *w) EV_THROW
2889{ 3602{
2890 clear_pending (EV_A_ (W)w); 3603 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 3604 if (expect_false (!ev_is_active (w)))
2892 return; 3605 return;
2893 3606
2894 EV_FREQUENT_CHECK; 3607 EV_FREQUENT_CHECK;
2895 3608
2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3609 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2897 ev_stop (EV_A_ (W)w); 3610 ev_stop (EV_A_ (W)w);
2898 3611
2899 EV_FREQUENT_CHECK; 3612 EV_FREQUENT_CHECK;
2900} 3613}
2901 3614
… …
2968 if (!pend || pend == path) 3681 if (!pend || pend == path)
2969 break; 3682 break;
2970 3683
2971 *pend = 0; 3684 *pend = 0;
2972 w->wd = inotify_add_watch (fs_fd, path, mask); 3685 w->wd = inotify_add_watch (fs_fd, path, mask);
2973 } 3686 }
2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3687 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2975 } 3688 }
2976 } 3689 }
2977 3690
2978 if (w->wd >= 0) 3691 if (w->wd >= 0)
2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3692 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2980 3693
2981 /* now re-arm timer, if required */ 3694 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3695 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer); 3696 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3697 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2992 3705
2993 if (wd < 0) 3706 if (wd < 0)
2994 return; 3707 return;
2995 3708
2996 w->wd = -2; 3709 w->wd = -2;
2997 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3710 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2998 wlist_del (&fs_hash [slot].head, (WL)w); 3711 wlist_del (&fs_hash [slot].head, (WL)w);
2999 3712
3000 /* remove this watcher, if others are watching it, they will rearm */ 3713 /* remove this watcher, if others are watching it, they will rearm */
3001 inotify_rm_watch (fs_fd, wd); 3714 inotify_rm_watch (fs_fd, wd);
3002} 3715}
… …
3004static void noinline 3717static void noinline
3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3718infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3006{ 3719{
3007 if (slot < 0) 3720 if (slot < 0)
3008 /* overflow, need to check for all hash slots */ 3721 /* overflow, need to check for all hash slots */
3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3722 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3010 infy_wd (EV_A_ slot, wd, ev); 3723 infy_wd (EV_A_ slot, wd, ev);
3011 else 3724 else
3012 { 3725 {
3013 WL w_; 3726 WL w_;
3014 3727
3015 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3728 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3016 { 3729 {
3017 ev_stat *w = (ev_stat *)w_; 3730 ev_stat *w = (ev_stat *)w_;
3018 w_ = w_->next; /* lets us remove this watcher and all before it */ 3731 w_ = w_->next; /* lets us remove this watcher and all before it */
3019 3732
3020 if (w->wd == wd || wd == -1) 3733 if (w->wd == wd || wd == -1)
3021 { 3734 {
3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3735 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3023 { 3736 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3737 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3025 w->wd = -1; 3738 w->wd = -1;
3026 infy_add (EV_A_ w); /* re-add, no matter what */ 3739 infy_add (EV_A_ w); /* re-add, no matter what */
3027 } 3740 }
3028 3741
3029 stat_timer_cb (EV_A_ &w->timer, 0); 3742 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3045 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3758 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len; 3759 ofs += sizeof (struct inotify_event) + ev->len;
3047 } 3760 }
3048} 3761}
3049 3762
3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void 3763inline_size void ecb_cold
3083ev_check_2625 (EV_P) 3764ev_check_2625 (EV_P)
3084{ 3765{
3085 /* kernels < 2.6.25 are borked 3766 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */ 3768 */
… …
3092} 3773}
3093 3774
3094inline_size int 3775inline_size int
3095infy_newfd (void) 3776infy_newfd (void)
3096{ 3777{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3778#if defined IN_CLOEXEC && defined IN_NONBLOCK
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3779 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0) 3780 if (fd >= 0)
3100 return fd; 3781 return fd;
3101#endif 3782#endif
3102 return inotify_init (); 3783 return inotify_init ();
… …
3143 ev_io_set (&fs_w, fs_fd, EV_READ); 3824 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w); 3825 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A); 3826 ev_unref (EV_A);
3146 } 3827 }
3147 3828
3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3829 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3149 { 3830 {
3150 WL w_ = fs_hash [slot].head; 3831 WL w_ = fs_hash [slot].head;
3151 fs_hash [slot].head = 0; 3832 fs_hash [slot].head = 0;
3152 3833
3153 while (w_) 3834 while (w_)
… …
3177#else 3858#else
3178# define EV_LSTAT(p,b) lstat (p, b) 3859# define EV_LSTAT(p,b) lstat (p, b)
3179#endif 3860#endif
3180 3861
3181void 3862void
3182ev_stat_stat (EV_P_ ev_stat *w) 3863ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3183{ 3864{
3184 if (lstat (w->path, &w->attr) < 0) 3865 if (lstat (w->path, &w->attr) < 0)
3185 w->attr.st_nlink = 0; 3866 w->attr.st_nlink = 0;
3186 else if (!w->attr.st_nlink) 3867 else if (!w->attr.st_nlink)
3187 w->attr.st_nlink = 1; 3868 w->attr.st_nlink = 1;
… …
3226 ev_feed_event (EV_A_ w, EV_STAT); 3907 ev_feed_event (EV_A_ w, EV_STAT);
3227 } 3908 }
3228} 3909}
3229 3910
3230void 3911void
3231ev_stat_start (EV_P_ ev_stat *w) 3912ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3232{ 3913{
3233 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3234 return; 3915 return;
3235 3916
3236 ev_stat_stat (EV_A_ w); 3917 ev_stat_stat (EV_A_ w);
… …
3257 3938
3258 EV_FREQUENT_CHECK; 3939 EV_FREQUENT_CHECK;
3259} 3940}
3260 3941
3261void 3942void
3262ev_stat_stop (EV_P_ ev_stat *w) 3943ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3263{ 3944{
3264 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
3266 return; 3947 return;
3267 3948
… …
3283} 3964}
3284#endif 3965#endif
3285 3966
3286#if EV_IDLE_ENABLE 3967#if EV_IDLE_ENABLE
3287void 3968void
3288ev_idle_start (EV_P_ ev_idle *w) 3969ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3289{ 3970{
3290 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
3291 return; 3972 return;
3292 3973
3293 pri_adjust (EV_A_ (W)w); 3974 pri_adjust (EV_A_ (W)w);
… …
3306 3987
3307 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3308} 3989}
3309 3990
3310void 3991void
3311ev_idle_stop (EV_P_ ev_idle *w) 3992ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3312{ 3993{
3313 clear_pending (EV_A_ (W)w); 3994 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 3995 if (expect_false (!ev_is_active (w)))
3315 return; 3996 return;
3316 3997
… …
3330} 4011}
3331#endif 4012#endif
3332 4013
3333#if EV_PREPARE_ENABLE 4014#if EV_PREPARE_ENABLE
3334void 4015void
3335ev_prepare_start (EV_P_ ev_prepare *w) 4016ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3336{ 4017{
3337 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3338 return; 4019 return;
3339 4020
3340 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
… …
3345 4026
3346 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3347} 4028}
3348 4029
3349void 4030void
3350ev_prepare_stop (EV_P_ ev_prepare *w) 4031ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3351{ 4032{
3352 clear_pending (EV_A_ (W)w); 4033 clear_pending (EV_A_ (W)w);
3353 if (expect_false (!ev_is_active (w))) 4034 if (expect_false (!ev_is_active (w)))
3354 return; 4035 return;
3355 4036
… …
3368} 4049}
3369#endif 4050#endif
3370 4051
3371#if EV_CHECK_ENABLE 4052#if EV_CHECK_ENABLE
3372void 4053void
3373ev_check_start (EV_P_ ev_check *w) 4054ev_check_start (EV_P_ ev_check *w) EV_THROW
3374{ 4055{
3375 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3376 return; 4057 return;
3377 4058
3378 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
… …
3383 4064
3384 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
3385} 4066}
3386 4067
3387void 4068void
3388ev_check_stop (EV_P_ ev_check *w) 4069ev_check_stop (EV_P_ ev_check *w) EV_THROW
3389{ 4070{
3390 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
3391 if (expect_false (!ev_is_active (w))) 4072 if (expect_false (!ev_is_active (w)))
3392 return; 4073 return;
3393 4074
… …
3406} 4087}
3407#endif 4088#endif
3408 4089
3409#if EV_EMBED_ENABLE 4090#if EV_EMBED_ENABLE
3410void noinline 4091void noinline
3411ev_embed_sweep (EV_P_ ev_embed *w) 4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3412{ 4093{
3413 ev_loop (w->other, EVLOOP_NONBLOCK); 4094 ev_run (w->other, EVRUN_NOWAIT);
3414} 4095}
3415 4096
3416static void 4097static void
3417embed_io_cb (EV_P_ ev_io *io, int revents) 4098embed_io_cb (EV_P_ ev_io *io, int revents)
3418{ 4099{
3419 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4100 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3420 4101
3421 if (ev_cb (w)) 4102 if (ev_cb (w))
3422 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4103 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3423 else 4104 else
3424 ev_loop (w->other, EVLOOP_NONBLOCK); 4105 ev_run (w->other, EVRUN_NOWAIT);
3425} 4106}
3426 4107
3427static void 4108static void
3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4109embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3429{ 4110{
… …
3433 EV_P = w->other; 4114 EV_P = w->other;
3434 4115
3435 while (fdchangecnt) 4116 while (fdchangecnt)
3436 { 4117 {
3437 fd_reify (EV_A); 4118 fd_reify (EV_A);
3438 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4119 ev_run (EV_A_ EVRUN_NOWAIT);
3439 } 4120 }
3440 } 4121 }
3441} 4122}
3442 4123
3443static void 4124static void
… …
3449 4130
3450 { 4131 {
3451 EV_P = w->other; 4132 EV_P = w->other;
3452 4133
3453 ev_loop_fork (EV_A); 4134 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4135 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4136 }
3456 4137
3457 ev_embed_start (EV_A_ w); 4138 ev_embed_start (EV_A_ w);
3458} 4139}
3459 4140
… …
3464 ev_idle_stop (EV_A_ idle); 4145 ev_idle_stop (EV_A_ idle);
3465} 4146}
3466#endif 4147#endif
3467 4148
3468void 4149void
3469ev_embed_start (EV_P_ ev_embed *w) 4150ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3470{ 4151{
3471 if (expect_false (ev_is_active (w))) 4152 if (expect_false (ev_is_active (w)))
3472 return; 4153 return;
3473 4154
3474 { 4155 {
… …
3495 4176
3496 EV_FREQUENT_CHECK; 4177 EV_FREQUENT_CHECK;
3497} 4178}
3498 4179
3499void 4180void
3500ev_embed_stop (EV_P_ ev_embed *w) 4181ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3501{ 4182{
3502 clear_pending (EV_A_ (W)w); 4183 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 4184 if (expect_false (!ev_is_active (w)))
3504 return; 4185 return;
3505 4186
… …
3515} 4196}
3516#endif 4197#endif
3517 4198
3518#if EV_FORK_ENABLE 4199#if EV_FORK_ENABLE
3519void 4200void
3520ev_fork_start (EV_P_ ev_fork *w) 4201ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3521{ 4202{
3522 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3523 return; 4204 return;
3524 4205
3525 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
… …
3530 4211
3531 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3532} 4213}
3533 4214
3534void 4215void
3535ev_fork_stop (EV_P_ ev_fork *w) 4216ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3536{ 4217{
3537 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3538 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
3539 return; 4220 return;
3540 4221
… …
3551 4232
3552 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3553} 4234}
3554#endif 4235#endif
3555 4236
4237#if EV_CLEANUP_ENABLE
4238void
4239ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4240{
4241 if (expect_false (ev_is_active (w)))
4242 return;
4243
4244 EV_FREQUENT_CHECK;
4245
4246 ev_start (EV_A_ (W)w, ++cleanupcnt);
4247 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4248 cleanups [cleanupcnt - 1] = w;
4249
4250 /* cleanup watchers should never keep a refcount on the loop */
4251 ev_unref (EV_A);
4252 EV_FREQUENT_CHECK;
4253}
4254
4255void
4256ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4257{
4258 clear_pending (EV_A_ (W)w);
4259 if (expect_false (!ev_is_active (w)))
4260 return;
4261
4262 EV_FREQUENT_CHECK;
4263 ev_ref (EV_A);
4264
4265 {
4266 int active = ev_active (w);
4267
4268 cleanups [active - 1] = cleanups [--cleanupcnt];
4269 ev_active (cleanups [active - 1]) = active;
4270 }
4271
4272 ev_stop (EV_A_ (W)w);
4273
4274 EV_FREQUENT_CHECK;
4275}
4276#endif
4277
3556#if EV_ASYNC_ENABLE 4278#if EV_ASYNC_ENABLE
3557void 4279void
3558ev_async_start (EV_P_ ev_async *w) 4280ev_async_start (EV_P_ ev_async *w) EV_THROW
3559{ 4281{
3560 if (expect_false (ev_is_active (w))) 4282 if (expect_false (ev_is_active (w)))
3561 return; 4283 return;
4284
4285 w->sent = 0;
3562 4286
3563 evpipe_init (EV_A); 4287 evpipe_init (EV_A);
3564 4288
3565 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3566 4290
… …
3570 4294
3571 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3572} 4296}
3573 4297
3574void 4298void
3575ev_async_stop (EV_P_ ev_async *w) 4299ev_async_stop (EV_P_ ev_async *w) EV_THROW
3576{ 4300{
3577 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3579 return; 4303 return;
3580 4304
… …
3591 4315
3592 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3593} 4317}
3594 4318
3595void 4319void
3596ev_async_send (EV_P_ ev_async *w) 4320ev_async_send (EV_P_ ev_async *w) EV_THROW
3597{ 4321{
3598 w->sent = 1; 4322 w->sent = 1;
3599 evpipe_write (EV_A_ &async_pending); 4323 evpipe_write (EV_A_ &async_pending);
3600} 4324}
3601#endif 4325#endif
… …
3638 4362
3639 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4363 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3640} 4364}
3641 4365
3642void 4366void
3643ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4367ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3644{ 4368{
3645 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4369 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3646 4370
3647 if (expect_false (!once)) 4371 if (expect_false (!once))
3648 { 4372 {
3649 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4373 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3650 return; 4374 return;
3651 } 4375 }
3652 4376
3653 once->cb = cb; 4377 once->cb = cb;
3654 once->arg = arg; 4378 once->arg = arg;
… …
3669} 4393}
3670 4394
3671/*****************************************************************************/ 4395/*****************************************************************************/
3672 4396
3673#if EV_WALK_ENABLE 4397#if EV_WALK_ENABLE
3674void 4398void ecb_cold
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3676{ 4400{
3677 int i, j; 4401 int i, j;
3678 ev_watcher_list *wl, *wn; 4402 ev_watcher_list *wl, *wn;
3679 4403
3680 if (types & (EV_IO | EV_EMBED)) 4404 if (types & (EV_IO | EV_EMBED))
… …
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4447 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif 4448#endif
3725 4449
3726#if EV_IDLE_ENABLE 4450#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE) 4451 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; ) 4452 for (j = NUMPRI; j--; )
3729 for (i = idlecnt [j]; i--; ) 4453 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]); 4454 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif 4455#endif
3732 4456
3733#if EV_FORK_ENABLE 4457#if EV_FORK_ENABLE
… …
3769 } 4493 }
3770#endif 4494#endif
3771 4495
3772#if EV_CHILD_ENABLE 4496#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD) 4497 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; ) 4498 for (i = (EV_PID_HASHSIZE); i--; )
3775 for (wl = childs [i]; wl; ) 4499 for (wl = childs [i]; wl; )
3776 { 4500 {
3777 wn = wl->next; 4501 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl); 4502 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn; 4503 wl = wn;
… …
3786 4510
3787#if EV_MULTIPLICITY 4511#if EV_MULTIPLICITY
3788 #include "ev_wrap.h" 4512 #include "ev_wrap.h"
3789#endif 4513#endif
3790 4514
3791#ifdef __cplusplus
3792}
3793#endif
3794

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