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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 1.437 by root, Tue May 29 21:03:22 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/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 519 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
468# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
469#else 536#else
470# define expect(expr,value) (expr) 537 #include <inttypes.h>
471# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
473# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
474# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
475#endif 557 #endif
558#endif
476 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573# define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
627 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
628 #elif _MSC_VER >= 1400 /* VC++ 2005 */
629 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
630 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
631 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
632 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
633 #elif defined _WIN32
634 #include <WinNT.h>
635 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
636 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
637 #include <mbarrier.h>
638 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
639 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
640 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
641 #elif __xlC__
642 #define ECB_MEMORY_FENCE __sync ()
643 #endif
644#endif
645
646#ifndef ECB_MEMORY_FENCE
647 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
648 /* we assume that these memory fences work on all variables/all memory accesses, */
649 /* not just C11 atomics and atomic accesses */
650 #include <stdatomic.h>
651 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
652 /* simple barrier semantics. That means we need to take out thor's hammer. */
653 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
654 #endif
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
479#define inline_size static inline 1013#define inline_size ecb_inline
480 1014
481#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
482# define inline_speed static noinline 1018# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 1019#endif
486 1020
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 1022
489#if EV_MINPRI == EV_MAXPRI 1023#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
504 1038
505#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* 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 */ 1041/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 1043#endif
510 1044
511#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 1060# include "ev_win32.c"
527#endif 1061#endif
528 1062
529/*****************************************************************************/ 1063/*****************************************************************************/
530 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
531#if EV_AVOID_STDIO 1155#if EV_AVOID_STDIO
532static void noinline 1156static void noinline ecb_cold
533ev_printerr (const char *msg) 1157ev_printerr (const char *msg)
534{ 1158{
535 write (STDERR_FILENO, msg, strlen (msg)); 1159 write (STDERR_FILENO, msg, strlen (msg));
536} 1160}
537#endif 1161#endif
538 1162
539static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
540 1164
541void 1165void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
543{ 1167{
544 syserr_cb = cb; 1168 syserr_cb = cb;
545} 1169}
546 1170
547static void noinline 1171static void noinline ecb_cold
548ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
549{ 1173{
550 if (!msg) 1174 if (!msg)
551 msg = "(libev) system error"; 1175 msg = "(libev) system error";
552 1176
553 if (syserr_cb) 1177 if (syserr_cb)
554 syserr_cb (msg); 1178 syserr_cb (msg);
555 else 1179 else
556 { 1180 {
557#if EV_AVOID_STDIO 1181#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1182 ev_printerr (msg);
561 ev_printerr (": "); 1183 ev_printerr (": ");
562 ev_printerr (err); 1184 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1185 ev_printerr ("\n");
564#else 1186#else
565 perror (msg); 1187 perror (msg);
566#endif 1188#endif
567 abort (); 1189 abort ();
568 } 1190 }
569} 1191}
570 1192
571static void * 1193static void *
572ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
573{ 1195{
574#if __GLIBC__ 1196#if __GLIBC__
575 return realloc (ptr, size); 1197 return realloc (ptr, size);
576#else 1198#else
577 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
… …
585 free (ptr); 1207 free (ptr);
586 return 0; 1208 return 0;
587#endif 1209#endif
588} 1210}
589 1211
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
591 1213
592void 1214void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
594{ 1216{
595 alloc = cb; 1217 alloc = cb;
596} 1218}
597 1219
598inline_speed void * 1220inline_speed void *
… …
601 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
602 1224
603 if (!ptr && size) 1225 if (!ptr && size)
604 { 1226 {
605#if EV_AVOID_STDIO 1227#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1229#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1231#endif
610 abort (); 1232 abort ();
611 } 1233 }
612 1234
613 return ptr; 1235 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1253 unsigned char unused;
632#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1256#endif
635#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1258 SOCKET handle;
1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
637#endif 1262#endif
638} ANFD; 1263} ANFD;
639 1264
640/* stores the pending event set for a given watcher */ 1265/* stores the pending event set for a given watcher */
641typedef struct 1266typedef struct
… …
683 #undef VAR 1308 #undef VAR
684 }; 1309 };
685 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
686 1311
687 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1314
690#else 1315#else
691 1316
692 ev_tstamp ev_rt_now; 1317 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; 1318 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1319 #include "ev_vars.h"
695 #undef VAR 1320 #undef VAR
696 1321
697 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
698 1323
699#endif 1324#endif
700 1325
701#if EV_MINIMAL < 2 1326#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1327# 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) 1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1330#else
706# define EV_RELEASE_CB (void)0 1331# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1332# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1334#endif
710 1335
711#define EVUNLOOP_RECURSE 0x80 1336#define EVBREAK_RECURSE 0x80
712 1337
713/*****************************************************************************/ 1338/*****************************************************************************/
714 1339
715#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1341ev_tstamp
717ev_time (void) 1342ev_time (void) EV_THROW
718{ 1343{
719#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
720 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
721 { 1346 {
722 struct timespec ts; 1347 struct timespec ts;
… …
746 return ev_time (); 1371 return ev_time ();
747} 1372}
748 1373
749#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
750ev_tstamp 1375ev_tstamp
751ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
752{ 1377{
753 return ev_rt_now; 1378 return ev_rt_now;
754} 1379}
755#endif 1380#endif
756 1381
757void 1382void
758ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
759{ 1384{
760 if (delay > 0.) 1385 if (delay > 0.)
761 { 1386 {
762#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
763 struct timespec ts; 1388 struct timespec ts;
764 1389
765 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1392#elif defined _WIN32
770 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
771#else 1394#else
772 struct timeval tv; 1395 struct timeval tv;
773 1396
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 */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
781#endif 1402#endif
782 } 1403 }
783} 1404}
784 1405
785/*****************************************************************************/ 1406/*****************************************************************************/
786 1407
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1409
789/* find a suitable new size for the given array, */ 1410/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1411/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1412inline_size int
792array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
793{ 1414{
794 int ncur = cur + 1; 1415 int ncur = cur + 1;
795 1416
796 do 1417 do
797 ncur <<= 1; 1418 ncur <<= 1;
798 while (cnt > ncur); 1419 while (cnt > ncur);
799 1420
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1423 {
803 ncur *= elem; 1424 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1428 }
808 1429
809 return ncur; 1430 return ncur;
810} 1431}
811 1432
812static noinline void * 1433static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1435{
815 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
817} 1438}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1442
822#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
824 { \ 1445 { \
825 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1450 }
830 1451
… …
848pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
849{ 1470{
850} 1471}
851 1472
852void noinline 1473void noinline
853ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
854{ 1475{
855 W w_ = (W)w; 1476 W w_ = (W)w;
856 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
857 1478
858 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
862 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
864 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
865 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
866 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
867} 1490}
868 1491
869inline_speed void 1492inline_speed void
870feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
871{ 1494{
… …
917 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
919} 1542}
920 1543
921void 1544void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
923{ 1546{
924 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
925 fd_event_nocheck (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
926} 1549}
927 1550
… …
930inline_size void 1553inline_size void
931fd_reify (EV_P) 1554fd_reify (EV_P)
932{ 1555{
933 int i; 1556 int i;
934 1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
1582
935 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
936 { 1584 {
937 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
939 ev_io *w; 1587 ev_io *w;
940 1588
941 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
942 1591
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1593
946#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1595 {
949 unsigned long arg; 1596 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1597
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1599 anfd->events |= (unsigned char)w->events;
1600
1601 if (o_events != anfd->events)
1602 o_reify = EV__IOFDSET; /* actually |= */
952 } 1603 }
953#endif
954 1604
955 { 1605 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); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1607 }
966 1608
967 fdchangecnt = 0; 1609 fdchangecnt = 0;
968} 1610}
969 1611
… …
981 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
982 } 1624 }
983} 1625}
984 1626
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1628inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
988{ 1630{
989 ev_io *w; 1631 ev_io *w;
990 1632
991 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1637 }
996} 1638}
997 1639
998/* check whether the given fd is actually valid, for error recovery */ 1640/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1641inline_size int ecb_cold
1000fd_valid (int fd) 1642fd_valid (int fd)
1001{ 1643{
1002#ifdef _WIN32 1644#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1646#else
1005 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
1006#endif 1648#endif
1007} 1649}
1008 1650
1009/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
1010static void noinline 1652static void noinline ecb_cold
1011fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
1012{ 1654{
1013 int fd; 1655 int fd;
1014 1656
1015 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
1019} 1661}
1020 1662
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1664static void noinline ecb_cold
1023fd_enomem (EV_P) 1665fd_enomem (EV_P)
1024{ 1666{
1025 int fd; 1667 int fd;
1026 1668
1027 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
… …
1062} 1704}
1063 1705
1064/*****************************************************************************/ 1706/*****************************************************************************/
1065 1707
1066/* 1708/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * 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 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
1070 */ 1712 */
1071 1713
1072/* 1714/*
… …
1222 1864
1223/*****************************************************************************/ 1865/*****************************************************************************/
1224 1866
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 1868
1227static void noinline 1869static void noinline ecb_cold
1228evpipe_init (EV_P) 1870evpipe_init (EV_P)
1229{ 1871{
1230 if (!ev_is_active (&pipe_w)) 1872 if (!ev_is_active (&pipe_w))
1231 { 1873 {
1232# if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
… …
1254 ev_io_start (EV_A_ &pipe_w); 1896 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 } 1898 }
1257} 1899}
1258 1900
1259inline_size void 1901inline_speed void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{ 1903{
1262 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1263 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1264 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268 1924
1269#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1270 if (evfd >= 0) 1926 if (evfd >= 0)
1271 { 1927 {
1272 uint64_t counter = 1; 1928 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1274 } 1930 }
1275 else 1931 else
1276#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1277 write (evpipe [1], &dummy, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1278 1944
1279 errno = old_errno; 1945 errno = old_errno;
1280 } 1946 }
1281} 1947}
1282 1948
… …
1285static void 1951static void
1286pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1287{ 1953{
1288 int i; 1954 int i;
1289 1955
1956 if (revents & EV_READ)
1957 {
1290#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1291 if (evfd >= 0) 1959 if (evfd >= 0)
1292 { 1960 {
1293 uint64_t counter; 1961 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1295 } 1963 }
1296 else 1964 else
1297#endif 1965#endif
1298 { 1966 {
1299 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1300 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1301 } 1979 }
1302 1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 1986 if (sig_pending)
1304 { 1987 {
1305 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1306 1991
1307 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1310 } 1995 }
1996#endif
1311 1997
1312#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1313 if (async_pending) 1999 if (async_pending)
1314 { 2000 {
1315 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1316 2004
1317 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1318 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1319 { 2007 {
1320 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1321 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1322 } 2011 }
1323 } 2012 }
1324#endif 2013#endif
1325} 2014}
1326 2015
1327/*****************************************************************************/ 2016/*****************************************************************************/
1328 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1329static void 2035static void
1330ev_sighandler (int signum) 2036ev_sighandler (int signum)
1331{ 2037{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 2038#ifdef _WIN32
1337 signal (signum, ev_sighandler); 2039 signal (signum, ev_sighandler);
1338#endif 2040#endif
1339 2041
1340 signals [signum - 1].pending = 1; 2042 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 2043}
1343 2044
1344void noinline 2045void noinline
1345ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1346{ 2047{
1347 WL w; 2048 WL w;
1348 2049
1349 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
1350 return; 2051 return;
… …
1358 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1359 return; 2060 return;
1360#endif 2061#endif
1361 2062
1362 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 MEMORY_FENCE_RELEASE;
1363 2065
1364 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1366} 2068}
1367 2069
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1404{ 2106{
1405 ev_child *w; 2107 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2109
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2111 {
1410 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1412 { 2114 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 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 */ 2140 /* 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 */ 2141 /* 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); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2143
1442 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2147}
1446 2148
1447#endif 2149#endif
1448 2150
1449/*****************************************************************************/ 2151/*****************************************************************************/
1450 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1451#if EV_USE_PORT 2156#if EV_USE_PORT
1452# include "ev_port.c" 2157# include "ev_port.c"
1453#endif 2158#endif
1454#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1462#endif 2167#endif
1463#if EV_USE_SELECT 2168#if EV_USE_SELECT
1464# include "ev_select.c" 2169# include "ev_select.c"
1465#endif 2170#endif
1466 2171
1467int 2172int ecb_cold
1468ev_version_major (void) 2173ev_version_major (void) EV_THROW
1469{ 2174{
1470 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1471} 2176}
1472 2177
1473int 2178int ecb_cold
1474ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1475{ 2180{
1476 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1477} 2182}
1478 2183
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2185int inline_size ecb_cold
1481enable_secure (void) 2186enable_secure (void)
1482{ 2187{
1483#ifdef _WIN32 2188#ifdef _WIN32
1484 return 0; 2189 return 0;
1485#else 2190#else
1486 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2192 || getgid () != getegid ();
1488#endif 2193#endif
1489} 2194}
1490 2195
1491unsigned int 2196unsigned int ecb_cold
1492ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1493{ 2198{
1494 unsigned int flags = 0; 2199 unsigned int flags = 0;
1495 2200
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1497 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2206
1502 return flags; 2207 return flags;
1503} 2208}
1504 2209
1505unsigned int 2210unsigned int ecb_cold
1506ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1507{ 2212{
1508 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1509 2214
1510#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1511 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1515#ifdef __APPLE__ 2220#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2221 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif
1520 2228
1521 return flags; 2229 return flags;
1522} 2230}
1523 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1524unsigned int 2244unsigned int
1525ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1526{ 2246{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 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} 2248}
1535 2249
2250#if EV_FEATURE_API
1536unsigned int 2251unsigned int
1537ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1538{ 2253{
1539 return backend; 2254 return loop_count;
1540} 2255}
1541 2256
1542#if EV_MINIMAL < 2
1543unsigned int 2257unsigned int
1544ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1545{
1546 return loop_count;
1547}
1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{ 2259{
1552 return loop_depth; 2260 return loop_depth;
1553} 2261}
1554 2262
1555void 2263void
1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1557{ 2265{
1558 io_blocktime = interval; 2266 io_blocktime = interval;
1559} 2267}
1560 2268
1561void 2269void
1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1563{ 2271{
1564 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1565} 2273}
1566 2274
1567void 2275void
1568ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1569{ 2277{
1570 userdata = data; 2278 userdata = data;
1571} 2279}
1572 2280
1573void * 2281void *
1574ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1575{ 2283{
1576 return userdata; 2284 return userdata;
1577} 2285}
1578 2286
2287void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1580{ 2289{
1581 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1582} 2291}
1583 2292
2293void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1585{ 2295{
1586 release_cb = release; 2296 release_cb = release;
1587 acquire_cb = acquire; 2297 acquire_cb = acquire;
1588} 2298}
1589#endif 2299#endif
1590 2300
1591/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2302static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1594{ 2304{
1595 if (!backend) 2305 if (!backend)
1596 { 2306 {
2307 origflags = flags;
2308
1597#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1598 if (!have_realtime) 2310 if (!have_realtime)
1599 { 2311 {
1600 struct timespec ts; 2312 struct timespec ts;
1601 2313
… …
1623 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2336 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2339
1628 ev_rt_now = ev_time (); 2340 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2341 mn_now = get_clock ();
1630 now_floor = mn_now; 2342 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2343 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2344#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2345 invoke_cb = ev_invoke_pending;
1634#endif 2346#endif
1635 2347
1636 io_blocktime = 0.; 2348 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2349 timeout_blocktime = 0.;
1638 backend = 0; 2350 backend = 0;
1639 backend_fd = -1; 2351 backend_fd = -1;
1640 sig_pending = 0; 2352 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2354 async_pending = 0;
1643#endif 2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
1644#if EV_USE_INOTIFY 2358#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2360#endif
1647#if EV_USE_SIGNALFD 2361#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2363#endif
1650 2364
1651 if (!(flags & 0x0000ffffU)) 2365 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1653 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1654#if EV_USE_PORT 2371#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2373#endif
1657#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2392#endif
1676 } 2393 }
1677} 2394}
1678 2395
1679/* free up a loop structure */ 2396/* free up a loop structure */
1680static void noinline 2397void ecb_cold
1681loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1682{ 2399{
1683 int i; 2400 int i;
2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
1684 2424
1685 if (ev_is_active (&pipe_w)) 2425 if (ev_is_active (&pipe_w))
1686 { 2426 {
1687 /*ev_ref (EV_A);*/ 2427 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1710#endif 2450#endif
1711 2451
1712 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1713 close (backend_fd); 2453 close (backend_fd);
1714 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1715#if EV_USE_PORT 2458#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2460#endif
1718#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1747#endif 2490#endif
1748#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1750#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1751 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1755#endif 2501#endif
1756 2502
1757 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1758} 2513}
1759 2514
1760#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1762#endif 2517#endif
… …
1777 infy_fork (EV_A); 2532 infy_fork (EV_A);
1778#endif 2533#endif
1779 2534
1780 if (ev_is_active (&pipe_w)) 2535 if (ev_is_active (&pipe_w))
1781 { 2536 {
1782 /* this "locks" the handlers against writing to the pipe */ 2537 /* 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 2538
1789 ev_ref (EV_A); 2539 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2540 ev_io_stop (EV_A_ &pipe_w);
1791 2541
1792#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
… …
1810 postfork = 0; 2560 postfork = 0;
1811} 2561}
1812 2562
1813#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1814 2564
1815struct ev_loop * 2565struct ev_loop * ecb_cold
1816ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1817{ 2567{
1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1819 2569
1820 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1821 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1822 2572
1823 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1824 return EV_A; 2574 return EV_A;
1825 2575
2576 ev_free (EV_A);
1826 return 0; 2577 return 0;
1827} 2578}
1828 2579
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 */ 2580#endif /* multiplicity */
1842 2581
1843#if EV_VERIFY 2582#if EV_VERIFY
1844static void noinline 2583static void noinline ecb_cold
1845verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1846{ 2585{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848 2587
1849 if (w->pending) 2588 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851} 2590}
1852 2591
1853static void noinline 2592static void noinline ecb_cold
1854verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1855{ 2594{
1856 int i; 2595 int i;
1857 2596
1858 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1863 2602
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 } 2604 }
1866} 2605}
1867 2606
1868static void noinline 2607static void noinline ecb_cold
1869array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1870{ 2609{
1871 while (cnt--) 2610 while (cnt--)
1872 { 2611 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1875 } 2614 }
1876} 2615}
1877#endif 2616#endif
1878 2617
1879#if EV_MINIMAL < 2 2618#if EV_FEATURE_API
1880void 2619void ecb_cold
1881ev_loop_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
1882{ 2621{
1883#if EV_VERIFY 2622#if EV_VERIFY
1884 int i; 2623 int i;
1885 WL w; 2624 WL w, w2;
1886 2625
1887 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1888 2627
1889 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1890 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1892 2631
1893 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1894 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1895 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1896 { 2638 {
1897 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 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)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1900 } 2649 }
2650 }
1901 2651
1902 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1903 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1904 2654
1905#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1920#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif 2673#endif
1924 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1925#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif 2683#endif
1929 2684
… …
1937 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif 2693#endif
1939 2694
1940# if 0 2695# if 0
1941#if EV_CHILD_ENABLE 2696#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 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) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif 2699#endif
1945# endif 2700# endif
1946#endif 2701#endif
1947} 2702}
1948#endif 2703#endif
1949 2704
1950#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1951struct ev_loop * 2706struct ev_loop * ecb_cold
1952ev_default_loop_init (unsigned int flags)
1953#else 2707#else
1954int 2708int
2709#endif
1955ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1956#endif
1957{ 2711{
1958 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1959 { 2713 {
1960#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1980 2734
1981 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1982} 2736}
1983 2737
1984void 2738void
1985ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1986{ 2740{
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 */ 2741 postfork = 1; /* must be in line with ev_default_fork */
2009} 2742}
2010 2743
2011/*****************************************************************************/ 2744/*****************************************************************************/
2012 2745
2013void 2746void
… …
2015{ 2748{
2016 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
2017} 2750}
2018 2751
2019unsigned int 2752unsigned int
2020ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
2021{ 2754{
2022 int pri; 2755 int pri;
2023 unsigned int count = 0; 2756 unsigned int count = 0;
2024 2757
2025 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
… …
2029} 2762}
2030 2763
2031void noinline 2764void noinline
2032ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
2033{ 2766{
2034 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2035
2036 for (pri = NUMPRI; pri--; )
2037 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
2038 { 2769 {
2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 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 2771
2044 p->w->pending = 0; 2772 p->w->pending = 0;
2045 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2046 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2047 } 2775 }
… …
2104 EV_FREQUENT_CHECK; 2832 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w); 2833 feed_reverse (EV_A_ (W)w);
2106 } 2834 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108 2836
2109 feed_reverse_done (EV_A_ EV_TIMEOUT); 2837 feed_reverse_done (EV_A_ EV_TIMER);
2110 } 2838 }
2111} 2839}
2112 2840
2113#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
2114/* make periodics pending */ 2867/* make periodics pending */
2115inline_size void 2868inline_size void
2116periodics_reify (EV_P) 2869periodics_reify (EV_P)
2117{ 2870{
2118 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2119 2872
2120 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2121 { 2874 {
2122 int feed_count = 0;
2123
2124 do 2875 do
2125 { 2876 {
2126 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2127 2878
2128 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2137 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
2139 } 2890 }
2140 else if (w->interval) 2891 else if (w->interval)
2141 { 2892 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2893 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]); 2894 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
2158 } 2896 }
2159 else 2897 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2167 feed_reverse_done (EV_A_ EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 } 2906 }
2169} 2907}
2170 2908
2171/* simply recalculate all periodics */ 2909/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2173static void noinline 2911static void noinline ecb_cold
2174periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
2175{ 2913{
2176 int i; 2914 int i;
2177 2915
2178 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182 2920
2183 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval) 2923 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
2187 2925
2188 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
2189 } 2927 }
2190 2928
2191 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
2192} 2930}
2193#endif 2931#endif
2194 2932
2195/* adjust all timers by a given offset */ 2933/* adjust all timers by a given offset */
2196static void noinline 2934static void noinline ecb_cold
2197timers_reschedule (EV_P_ ev_tstamp adjust) 2935timers_reschedule (EV_P_ ev_tstamp adjust)
2198{ 2936{
2199 int i; 2937 int i;
2200 2938
2201 for (i = 0; i < timercnt; ++i) 2939 for (i = 0; i < timercnt; ++i)
… …
2238 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
2239 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
2240 */ 2978 */
2241 for (i = 4; --i; ) 2979 for (i = 4; --i; )
2242 { 2980 {
2981 ev_tstamp diff;
2243 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
2244 2983
2984 diff = odiff - rtmn_diff;
2985
2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2246 return; /* all is well */ 2987 return; /* all is well */
2247 2988
2248 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
2249 mn_now = get_clock (); 2990 mn_now = get_clock ();
2250 now_floor = mn_now; 2991 now_floor = mn_now;
… …
2272 3013
2273 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2274 } 3015 }
2275} 3016}
2276 3017
2277void 3018int
2278ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2279{ 3020{
2280#if EV_MINIMAL < 2 3021#if EV_FEATURE_API
2281 ++loop_depth; 3022 ++loop_depth;
2282#endif 3023#endif
2283 3024
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2285 3026
2286 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
2287 3028
2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2289 3030
2290 do 3031 do
2291 { 3032 {
2292#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
2294#endif 3035#endif
2295 3036
2296#ifndef _WIN32 3037#ifndef _WIN32
2297 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
2298 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
2334 /* calculate blocking time */ 3075 /* calculate blocking time */
2335 { 3076 {
2336 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
2337 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
2338 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2340 { 3092 {
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; 3093 waittime = MAX_BLOCKTIME;
2348 3094
2349 if (timercnt) 3095 if (timercnt)
2350 { 3096 {
2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2352 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
2353 } 3099 }
2354 3100
2355#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
2356 if (periodiccnt) 3102 if (periodiccnt)
2357 { 3103 {
2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2359 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2360 } 3106 }
2361#endif 3107#endif
2362 3108
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2364 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2365 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
3112
3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
2366 3117
2367 /* extra check because io_blocktime is commonly 0 */ 3118 /* extra check because io_blocktime is commonly 0 */
2368 if (expect_false (io_blocktime)) 3119 if (expect_false (io_blocktime))
2369 { 3120 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371 3122
2372 if (sleeptime > waittime - backend_fudge) 3123 if (sleeptime > waittime - backend_mintime)
2373 sleeptime = waittime - backend_fudge; 3124 sleeptime = waittime - backend_mintime;
2374 3125
2375 if (expect_true (sleeptime > 0.)) 3126 if (expect_true (sleeptime > 0.))
2376 { 3127 {
2377 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2378 waittime -= sleeptime; 3129 waittime -= sleeptime;
2379 } 3130 }
2380 } 3131 }
2381 } 3132 }
2382 3133
2383#if EV_MINIMAL < 2 3134#if EV_FEATURE_API
2384 ++loop_count; 3135 ++loop_count;
2385#endif 3136#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2387 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 if (pipe_write_skipped)
3144 {
3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3146 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3147 }
3148
2389 3149
2390 /* update ev_rt_now, do magic */ 3150 /* update ev_rt_now, do magic */
2391 time_update (EV_A_ waittime + sleeptime); 3151 time_update (EV_A_ waittime + sleeptime);
2392 } 3152 }
2393 3153
… …
2411 EV_INVOKE_PENDING; 3171 EV_INVOKE_PENDING;
2412 } 3172 }
2413 while (expect_true ( 3173 while (expect_true (
2414 activecnt 3174 activecnt
2415 && !loop_done 3175 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3176 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2417 )); 3177 ));
2418 3178
2419 if (loop_done == EVUNLOOP_ONE) 3179 if (loop_done == EVBREAK_ONE)
2420 loop_done = EVUNLOOP_CANCEL; 3180 loop_done = EVBREAK_CANCEL;
2421 3181
2422#if EV_MINIMAL < 2 3182#if EV_FEATURE_API
2423 --loop_depth; 3183 --loop_depth;
2424#endif 3184#endif
3185
3186 return activecnt;
2425} 3187}
2426 3188
2427void 3189void
2428ev_unloop (EV_P_ int how) 3190ev_break (EV_P_ int how) EV_THROW
2429{ 3191{
2430 loop_done = how; 3192 loop_done = how;
2431} 3193}
2432 3194
2433void 3195void
2434ev_ref (EV_P) 3196ev_ref (EV_P) EV_THROW
2435{ 3197{
2436 ++activecnt; 3198 ++activecnt;
2437} 3199}
2438 3200
2439void 3201void
2440ev_unref (EV_P) 3202ev_unref (EV_P) EV_THROW
2441{ 3203{
2442 --activecnt; 3204 --activecnt;
2443} 3205}
2444 3206
2445void 3207void
2446ev_now_update (EV_P) 3208ev_now_update (EV_P) EV_THROW
2447{ 3209{
2448 time_update (EV_A_ 1e100); 3210 time_update (EV_A_ 1e100);
2449} 3211}
2450 3212
2451void 3213void
2452ev_suspend (EV_P) 3214ev_suspend (EV_P) EV_THROW
2453{ 3215{
2454 ev_now_update (EV_A); 3216 ev_now_update (EV_A);
2455} 3217}
2456 3218
2457void 3219void
2458ev_resume (EV_P) 3220ev_resume (EV_P) EV_THROW
2459{ 3221{
2460 ev_tstamp mn_prev = mn_now; 3222 ev_tstamp mn_prev = mn_now;
2461 3223
2462 ev_now_update (EV_A); 3224 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev); 3225 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2502 w->pending = 0; 3264 w->pending = 0;
2503 } 3265 }
2504} 3266}
2505 3267
2506int 3268int
2507ev_clear_pending (EV_P_ void *w) 3269ev_clear_pending (EV_P_ void *w) EV_THROW
2508{ 3270{
2509 W w_ = (W)w; 3271 W w_ = (W)w;
2510 int pending = w_->pending; 3272 int pending = w_->pending;
2511 3273
2512 if (expect_true (pending)) 3274 if (expect_true (pending))
… …
2545} 3307}
2546 3308
2547/*****************************************************************************/ 3309/*****************************************************************************/
2548 3310
2549void noinline 3311void noinline
2550ev_io_start (EV_P_ ev_io *w) 3312ev_io_start (EV_P_ ev_io *w) EV_THROW
2551{ 3313{
2552 int fd = w->fd; 3314 int fd = w->fd;
2553 3315
2554 if (expect_false (ev_is_active (w))) 3316 if (expect_false (ev_is_active (w)))
2555 return; 3317 return;
… …
2561 3323
2562 ev_start (EV_A_ (W)w, 1); 3324 ev_start (EV_A_ (W)w, 1);
2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2564 wlist_add (&anfds[fd].head, (WL)w); 3326 wlist_add (&anfds[fd].head, (WL)w);
2565 3327
3328 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330
2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3331 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2567 w->events &= ~EV__IOFDSET; 3332 w->events &= ~EV__IOFDSET;
2568 3333
2569 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2570} 3335}
2571 3336
2572void noinline 3337void noinline
2573ev_io_stop (EV_P_ ev_io *w) 3338ev_io_stop (EV_P_ ev_io *w) EV_THROW
2574{ 3339{
2575 clear_pending (EV_A_ (W)w); 3340 clear_pending (EV_A_ (W)w);
2576 if (expect_false (!ev_is_active (w))) 3341 if (expect_false (!ev_is_active (w)))
2577 return; 3342 return;
2578 3343
… …
2581 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2582 3347
2583 wlist_del (&anfds[w->fd].head, (WL)w); 3348 wlist_del (&anfds[w->fd].head, (WL)w);
2584 ev_stop (EV_A_ (W)w); 3349 ev_stop (EV_A_ (W)w);
2585 3350
2586 fd_change (EV_A_ w->fd, 1); 3351 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2587 3352
2588 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
2589} 3354}
2590 3355
2591void noinline 3356void noinline
2592ev_timer_start (EV_P_ ev_timer *w) 3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2593{ 3358{
2594 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
2595 return; 3360 return;
2596 3361
2597 ev_at (w) += mn_now; 3362 ev_at (w) += mn_now;
… …
2611 3376
2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2613} 3378}
2614 3379
2615void noinline 3380void noinline
2616ev_timer_stop (EV_P_ ev_timer *w) 3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2617{ 3382{
2618 clear_pending (EV_A_ (W)w); 3383 clear_pending (EV_A_ (W)w);
2619 if (expect_false (!ev_is_active (w))) 3384 if (expect_false (!ev_is_active (w)))
2620 return; 3385 return;
2621 3386
… …
2641 3406
2642 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
2643} 3408}
2644 3409
2645void noinline 3410void noinline
2646ev_timer_again (EV_P_ ev_timer *w) 3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2647{ 3412{
2648 EV_FREQUENT_CHECK; 3413 EV_FREQUENT_CHECK;
3414
3415 clear_pending (EV_A_ (W)w);
2649 3416
2650 if (ev_is_active (w)) 3417 if (ev_is_active (w))
2651 { 3418 {
2652 if (w->repeat) 3419 if (w->repeat)
2653 { 3420 {
… …
2666 3433
2667 EV_FREQUENT_CHECK; 3434 EV_FREQUENT_CHECK;
2668} 3435}
2669 3436
2670ev_tstamp 3437ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w) 3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2672{ 3439{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2674} 3441}
2675 3442
2676#if EV_PERIODIC_ENABLE 3443#if EV_PERIODIC_ENABLE
2677void noinline 3444void noinline
2678ev_periodic_start (EV_P_ ev_periodic *w) 3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2679{ 3446{
2680 if (expect_false (ev_is_active (w))) 3447 if (expect_false (ev_is_active (w)))
2681 return; 3448 return;
2682 3449
2683 if (w->reschedule_cb) 3450 if (w->reschedule_cb)
2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3451 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2685 else if (w->interval) 3452 else if (w->interval)
2686 { 3453 {
2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3454 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 */ 3455 periodic_recalc (EV_A_ w);
2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2690 } 3456 }
2691 else 3457 else
2692 ev_at (w) = w->offset; 3458 ev_at (w) = w->offset;
2693 3459
2694 EV_FREQUENT_CHECK; 3460 EV_FREQUENT_CHECK;
… …
2704 3470
2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2706} 3472}
2707 3473
2708void noinline 3474void noinline
2709ev_periodic_stop (EV_P_ ev_periodic *w) 3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2710{ 3476{
2711 clear_pending (EV_A_ (W)w); 3477 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3478 if (expect_false (!ev_is_active (w)))
2713 return; 3479 return;
2714 3480
… …
2732 3498
2733 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2734} 3500}
2735 3501
2736void noinline 3502void noinline
2737ev_periodic_again (EV_P_ ev_periodic *w) 3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2738{ 3504{
2739 /* TODO: use adjustheap and recalculation */ 3505 /* TODO: use adjustheap and recalculation */
2740 ev_periodic_stop (EV_A_ w); 3506 ev_periodic_stop (EV_A_ w);
2741 ev_periodic_start (EV_A_ w); 3507 ev_periodic_start (EV_A_ w);
2742} 3508}
… …
2747#endif 3513#endif
2748 3514
2749#if EV_SIGNAL_ENABLE 3515#if EV_SIGNAL_ENABLE
2750 3516
2751void noinline 3517void noinline
2752ev_signal_start (EV_P_ ev_signal *w) 3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2753{ 3519{
2754 if (expect_false (ev_is_active (w))) 3520 if (expect_false (ev_is_active (w)))
2755 return; 3521 return;
2756 3522
2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2815 sa.sa_handler = ev_sighandler; 3581 sa.sa_handler = ev_sighandler;
2816 sigfillset (&sa.sa_mask); 3582 sigfillset (&sa.sa_mask);
2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3583 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2818 sigaction (w->signum, &sa, 0); 3584 sigaction (w->signum, &sa, 0);
2819 3585
3586 if (origflags & EVFLAG_NOSIGMASK)
3587 {
2820 sigemptyset (&sa.sa_mask); 3588 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum); 3589 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3590 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3591 }
2823#endif 3592#endif
2824 } 3593 }
2825 3594
2826 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2827} 3596}
2828 3597
2829void noinline 3598void noinline
2830ev_signal_stop (EV_P_ ev_signal *w) 3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2831{ 3600{
2832 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
2834 return; 3603 return;
2835 3604
… …
2866#endif 3635#endif
2867 3636
2868#if EV_CHILD_ENABLE 3637#if EV_CHILD_ENABLE
2869 3638
2870void 3639void
2871ev_child_start (EV_P_ ev_child *w) 3640ev_child_start (EV_P_ ev_child *w) EV_THROW
2872{ 3641{
2873#if EV_MULTIPLICITY 3642#if EV_MULTIPLICITY
2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2875#endif 3644#endif
2876 if (expect_false (ev_is_active (w))) 3645 if (expect_false (ev_is_active (w)))
2877 return; 3646 return;
2878 3647
2879 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2880 3649
2881 ev_start (EV_A_ (W)w, 1); 3650 ev_start (EV_A_ (W)w, 1);
2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3651 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2883 3652
2884 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
2885} 3654}
2886 3655
2887void 3656void
2888ev_child_stop (EV_P_ ev_child *w) 3657ev_child_stop (EV_P_ ev_child *w) EV_THROW
2889{ 3658{
2890 clear_pending (EV_A_ (W)w); 3659 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 3660 if (expect_false (!ev_is_active (w)))
2892 return; 3661 return;
2893 3662
2894 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2895 3664
2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3665 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2897 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2898 3667
2899 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2900} 3669}
2901 3670
… …
2968 if (!pend || pend == path) 3737 if (!pend || pend == path)
2969 break; 3738 break;
2970 3739
2971 *pend = 0; 3740 *pend = 0;
2972 w->wd = inotify_add_watch (fs_fd, path, mask); 3741 w->wd = inotify_add_watch (fs_fd, path, mask);
2973 } 3742 }
2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3743 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2975 } 3744 }
2976 } 3745 }
2977 3746
2978 if (w->wd >= 0) 3747 if (w->wd >= 0)
2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3748 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2980 3749
2981 /* now re-arm timer, if required */ 3750 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3751 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer); 3752 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3753 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2992 3761
2993 if (wd < 0) 3762 if (wd < 0)
2994 return; 3763 return;
2995 3764
2996 w->wd = -2; 3765 w->wd = -2;
2997 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3766 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2998 wlist_del (&fs_hash [slot].head, (WL)w); 3767 wlist_del (&fs_hash [slot].head, (WL)w);
2999 3768
3000 /* remove this watcher, if others are watching it, they will rearm */ 3769 /* remove this watcher, if others are watching it, they will rearm */
3001 inotify_rm_watch (fs_fd, wd); 3770 inotify_rm_watch (fs_fd, wd);
3002} 3771}
… …
3004static void noinline 3773static void noinline
3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3774infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3006{ 3775{
3007 if (slot < 0) 3776 if (slot < 0)
3008 /* overflow, need to check for all hash slots */ 3777 /* overflow, need to check for all hash slots */
3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3778 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3010 infy_wd (EV_A_ slot, wd, ev); 3779 infy_wd (EV_A_ slot, wd, ev);
3011 else 3780 else
3012 { 3781 {
3013 WL w_; 3782 WL w_;
3014 3783
3015 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3784 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3016 { 3785 {
3017 ev_stat *w = (ev_stat *)w_; 3786 ev_stat *w = (ev_stat *)w_;
3018 w_ = w_->next; /* lets us remove this watcher and all before it */ 3787 w_ = w_->next; /* lets us remove this watcher and all before it */
3019 3788
3020 if (w->wd == wd || wd == -1) 3789 if (w->wd == wd || wd == -1)
3021 { 3790 {
3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3791 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3023 { 3792 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3793 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3025 w->wd = -1; 3794 w->wd = -1;
3026 infy_add (EV_A_ w); /* re-add, no matter what */ 3795 infy_add (EV_A_ w); /* re-add, no matter what */
3027 } 3796 }
3028 3797
3029 stat_timer_cb (EV_A_ &w->timer, 0); 3798 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3045 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3814 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len; 3815 ofs += sizeof (struct inotify_event) + ev->len;
3047 } 3816 }
3048} 3817}
3049 3818
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 3819inline_size void ecb_cold
3083ev_check_2625 (EV_P) 3820ev_check_2625 (EV_P)
3084{ 3821{
3085 /* kernels < 2.6.25 are borked 3822 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3823 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */ 3824 */
… …
3092} 3829}
3093 3830
3094inline_size int 3831inline_size int
3095infy_newfd (void) 3832infy_newfd (void)
3096{ 3833{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3834#if defined IN_CLOEXEC && defined IN_NONBLOCK
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3835 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0) 3836 if (fd >= 0)
3100 return fd; 3837 return fd;
3101#endif 3838#endif
3102 return inotify_init (); 3839 return inotify_init ();
… …
3143 ev_io_set (&fs_w, fs_fd, EV_READ); 3880 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w); 3881 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A); 3882 ev_unref (EV_A);
3146 } 3883 }
3147 3884
3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3885 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3149 { 3886 {
3150 WL w_ = fs_hash [slot].head; 3887 WL w_ = fs_hash [slot].head;
3151 fs_hash [slot].head = 0; 3888 fs_hash [slot].head = 0;
3152 3889
3153 while (w_) 3890 while (w_)
… …
3177#else 3914#else
3178# define EV_LSTAT(p,b) lstat (p, b) 3915# define EV_LSTAT(p,b) lstat (p, b)
3179#endif 3916#endif
3180 3917
3181void 3918void
3182ev_stat_stat (EV_P_ ev_stat *w) 3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3183{ 3920{
3184 if (lstat (w->path, &w->attr) < 0) 3921 if (lstat (w->path, &w->attr) < 0)
3185 w->attr.st_nlink = 0; 3922 w->attr.st_nlink = 0;
3186 else if (!w->attr.st_nlink) 3923 else if (!w->attr.st_nlink)
3187 w->attr.st_nlink = 1; 3924 w->attr.st_nlink = 1;
… …
3226 ev_feed_event (EV_A_ w, EV_STAT); 3963 ev_feed_event (EV_A_ w, EV_STAT);
3227 } 3964 }
3228} 3965}
3229 3966
3230void 3967void
3231ev_stat_start (EV_P_ ev_stat *w) 3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3232{ 3969{
3233 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3234 return; 3971 return;
3235 3972
3236 ev_stat_stat (EV_A_ w); 3973 ev_stat_stat (EV_A_ w);
… …
3257 3994
3258 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3259} 3996}
3260 3997
3261void 3998void
3262ev_stat_stop (EV_P_ ev_stat *w) 3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3263{ 4000{
3264 clear_pending (EV_A_ (W)w); 4001 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 4002 if (expect_false (!ev_is_active (w)))
3266 return; 4003 return;
3267 4004
… …
3283} 4020}
3284#endif 4021#endif
3285 4022
3286#if EV_IDLE_ENABLE 4023#if EV_IDLE_ENABLE
3287void 4024void
3288ev_idle_start (EV_P_ ev_idle *w) 4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3289{ 4026{
3290 if (expect_false (ev_is_active (w))) 4027 if (expect_false (ev_is_active (w)))
3291 return; 4028 return;
3292 4029
3293 pri_adjust (EV_A_ (W)w); 4030 pri_adjust (EV_A_ (W)w);
… …
3306 4043
3307 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
3308} 4045}
3309 4046
3310void 4047void
3311ev_idle_stop (EV_P_ ev_idle *w) 4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3312{ 4049{
3313 clear_pending (EV_A_ (W)w); 4050 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 4051 if (expect_false (!ev_is_active (w)))
3315 return; 4052 return;
3316 4053
… …
3330} 4067}
3331#endif 4068#endif
3332 4069
3333#if EV_PREPARE_ENABLE 4070#if EV_PREPARE_ENABLE
3334void 4071void
3335ev_prepare_start (EV_P_ ev_prepare *w) 4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3336{ 4073{
3337 if (expect_false (ev_is_active (w))) 4074 if (expect_false (ev_is_active (w)))
3338 return; 4075 return;
3339 4076
3340 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
… …
3345 4082
3346 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
3347} 4084}
3348 4085
3349void 4086void
3350ev_prepare_stop (EV_P_ ev_prepare *w) 4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3351{ 4088{
3352 clear_pending (EV_A_ (W)w); 4089 clear_pending (EV_A_ (W)w);
3353 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
3354 return; 4091 return;
3355 4092
… …
3368} 4105}
3369#endif 4106#endif
3370 4107
3371#if EV_CHECK_ENABLE 4108#if EV_CHECK_ENABLE
3372void 4109void
3373ev_check_start (EV_P_ ev_check *w) 4110ev_check_start (EV_P_ ev_check *w) EV_THROW
3374{ 4111{
3375 if (expect_false (ev_is_active (w))) 4112 if (expect_false (ev_is_active (w)))
3376 return; 4113 return;
3377 4114
3378 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
… …
3383 4120
3384 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
3385} 4122}
3386 4123
3387void 4124void
3388ev_check_stop (EV_P_ ev_check *w) 4125ev_check_stop (EV_P_ ev_check *w) EV_THROW
3389{ 4126{
3390 clear_pending (EV_A_ (W)w); 4127 clear_pending (EV_A_ (W)w);
3391 if (expect_false (!ev_is_active (w))) 4128 if (expect_false (!ev_is_active (w)))
3392 return; 4129 return;
3393 4130
… …
3406} 4143}
3407#endif 4144#endif
3408 4145
3409#if EV_EMBED_ENABLE 4146#if EV_EMBED_ENABLE
3410void noinline 4147void noinline
3411ev_embed_sweep (EV_P_ ev_embed *w) 4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3412{ 4149{
3413 ev_loop (w->other, EVLOOP_NONBLOCK); 4150 ev_run (w->other, EVRUN_NOWAIT);
3414} 4151}
3415 4152
3416static void 4153static void
3417embed_io_cb (EV_P_ ev_io *io, int revents) 4154embed_io_cb (EV_P_ ev_io *io, int revents)
3418{ 4155{
3419 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4156 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3420 4157
3421 if (ev_cb (w)) 4158 if (ev_cb (w))
3422 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4159 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3423 else 4160 else
3424 ev_loop (w->other, EVLOOP_NONBLOCK); 4161 ev_run (w->other, EVRUN_NOWAIT);
3425} 4162}
3426 4163
3427static void 4164static void
3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4165embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3429{ 4166{
… …
3433 EV_P = w->other; 4170 EV_P = w->other;
3434 4171
3435 while (fdchangecnt) 4172 while (fdchangecnt)
3436 { 4173 {
3437 fd_reify (EV_A); 4174 fd_reify (EV_A);
3438 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4175 ev_run (EV_A_ EVRUN_NOWAIT);
3439 } 4176 }
3440 } 4177 }
3441} 4178}
3442 4179
3443static void 4180static void
… …
3449 4186
3450 { 4187 {
3451 EV_P = w->other; 4188 EV_P = w->other;
3452 4189
3453 ev_loop_fork (EV_A); 4190 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4191 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4192 }
3456 4193
3457 ev_embed_start (EV_A_ w); 4194 ev_embed_start (EV_A_ w);
3458} 4195}
3459 4196
… …
3464 ev_idle_stop (EV_A_ idle); 4201 ev_idle_stop (EV_A_ idle);
3465} 4202}
3466#endif 4203#endif
3467 4204
3468void 4205void
3469ev_embed_start (EV_P_ ev_embed *w) 4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3470{ 4207{
3471 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
3472 return; 4209 return;
3473 4210
3474 { 4211 {
… …
3495 4232
3496 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3497} 4234}
3498 4235
3499void 4236void
3500ev_embed_stop (EV_P_ ev_embed *w) 4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3501{ 4238{
3502 clear_pending (EV_A_ (W)w); 4239 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 4240 if (expect_false (!ev_is_active (w)))
3504 return; 4241 return;
3505 4242
… …
3515} 4252}
3516#endif 4253#endif
3517 4254
3518#if EV_FORK_ENABLE 4255#if EV_FORK_ENABLE
3519void 4256void
3520ev_fork_start (EV_P_ ev_fork *w) 4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3521{ 4258{
3522 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
3523 return; 4260 return;
3524 4261
3525 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
… …
3530 4267
3531 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3532} 4269}
3533 4270
3534void 4271void
3535ev_fork_stop (EV_P_ ev_fork *w) 4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3536{ 4273{
3537 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3538 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3539 return; 4276 return;
3540 4277
… …
3551 4288
3552 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3553} 4290}
3554#endif 4291#endif
3555 4292
4293#if EV_CLEANUP_ENABLE
4294void
4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4296{
4297 if (expect_false (ev_is_active (w)))
4298 return;
4299
4300 EV_FREQUENT_CHECK;
4301
4302 ev_start (EV_A_ (W)w, ++cleanupcnt);
4303 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4304 cleanups [cleanupcnt - 1] = w;
4305
4306 /* cleanup watchers should never keep a refcount on the loop */
4307 ev_unref (EV_A);
4308 EV_FREQUENT_CHECK;
4309}
4310
4311void
4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4313{
4314 clear_pending (EV_A_ (W)w);
4315 if (expect_false (!ev_is_active (w)))
4316 return;
4317
4318 EV_FREQUENT_CHECK;
4319 ev_ref (EV_A);
4320
4321 {
4322 int active = ev_active (w);
4323
4324 cleanups [active - 1] = cleanups [--cleanupcnt];
4325 ev_active (cleanups [active - 1]) = active;
4326 }
4327
4328 ev_stop (EV_A_ (W)w);
4329
4330 EV_FREQUENT_CHECK;
4331}
4332#endif
4333
3556#if EV_ASYNC_ENABLE 4334#if EV_ASYNC_ENABLE
3557void 4335void
3558ev_async_start (EV_P_ ev_async *w) 4336ev_async_start (EV_P_ ev_async *w) EV_THROW
3559{ 4337{
3560 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3561 return; 4339 return;
4340
4341 w->sent = 0;
3562 4342
3563 evpipe_init (EV_A); 4343 evpipe_init (EV_A);
3564 4344
3565 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3566 4346
… …
3570 4350
3571 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3572} 4352}
3573 4353
3574void 4354void
3575ev_async_stop (EV_P_ ev_async *w) 4355ev_async_stop (EV_P_ ev_async *w) EV_THROW
3576{ 4356{
3577 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3579 return; 4359 return;
3580 4360
… …
3591 4371
3592 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3593} 4373}
3594 4374
3595void 4375void
3596ev_async_send (EV_P_ ev_async *w) 4376ev_async_send (EV_P_ ev_async *w) EV_THROW
3597{ 4377{
3598 w->sent = 1; 4378 w->sent = 1;
3599 evpipe_write (EV_A_ &async_pending); 4379 evpipe_write (EV_A_ &async_pending);
3600} 4380}
3601#endif 4381#endif
… …
3638 4418
3639 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3640} 4420}
3641 4421
3642void 4422void
3643ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3644{ 4424{
3645 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3646 4426
3647 if (expect_false (!once)) 4427 if (expect_false (!once))
3648 { 4428 {
3649 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4429 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3650 return; 4430 return;
3651 } 4431 }
3652 4432
3653 once->cb = cb; 4433 once->cb = cb;
3654 once->arg = arg; 4434 once->arg = arg;
… …
3669} 4449}
3670 4450
3671/*****************************************************************************/ 4451/*****************************************************************************/
3672 4452
3673#if EV_WALK_ENABLE 4453#if EV_WALK_ENABLE
3674void 4454void ecb_cold
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3676{ 4456{
3677 int i, j; 4457 int i, j;
3678 ev_watcher_list *wl, *wn; 4458 ev_watcher_list *wl, *wn;
3679 4459
3680 if (types & (EV_IO | EV_EMBED)) 4460 if (types & (EV_IO | EV_EMBED))
… …
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4503 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif 4504#endif
3725 4505
3726#if EV_IDLE_ENABLE 4506#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE) 4507 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; ) 4508 for (j = NUMPRI; j--; )
3729 for (i = idlecnt [j]; i--; ) 4509 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]); 4510 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif 4511#endif
3732 4512
3733#if EV_FORK_ENABLE 4513#if EV_FORK_ENABLE
… …
3769 } 4549 }
3770#endif 4550#endif
3771 4551
3772#if EV_CHILD_ENABLE 4552#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD) 4553 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; ) 4554 for (i = (EV_PID_HASHSIZE); i--; )
3775 for (wl = childs [i]; wl; ) 4555 for (wl = childs [i]; wl; )
3776 { 4556 {
3777 wn = wl->next; 4557 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl); 4558 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn; 4559 wl = wn;
… …
3786 4566
3787#if EV_MULTIPLICITY 4567#if EV_MULTIPLICITY
3788 #include "ev_wrap.h" 4568 #include "ev_wrap.h"
3789#endif 4569#endif
3790 4570
3791#ifdef __cplusplus
3792}
3793#endif
3794

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