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Comparing libev/ev.c (file contents):
Revision 1.327 by root, Sun Feb 14 19:09:04 2010 UTC vs.
Revision 1.450 by root, Mon Oct 8 15:43:35 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
211# undef EV_AVOID_STDIO
189#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
190 221
191/* 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 */
192 223
193/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG) 225#if defined EV_NSIG
195/* use what's provided */ 226/* use what's provided */
196#elif defined (NSIG) 227#elif defined NSIG
197# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
198#elif defined(_NSIG) 229#elif defined _NSIG
199# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX) 231#elif defined SIGMAX
201# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX) 233#elif defined SIG_MAX
203# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
205# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG) 237#elif defined MAXSIG
207# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG) 239#elif defined MAX_SIG
209# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig) 243#elif defined _sys_nsig
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else 245#else
215# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
216/* to make it compile regardless, just remove the above line */ 247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
217# define EV_NSIG 65 249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
218#endif 254#endif
219 255
220#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
222# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
223# else 259# else
224# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
225# endif 261# endif
226#endif 262#endif
227 263
228#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
230# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
231# else 267# else
232# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
233# endif 269# endif
234#endif 270#endif
235 271
… …
237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
238#endif 274#endif
239 275
240#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
241# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
242# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
243# else 279# else
244# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
245# endif 281# endif
246#endif 282#endif
247 283
248#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
249# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
250#endif 286#endif
251 287
252#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
253# ifdef _WIN32 289# ifdef _WIN32
254# define EV_USE_POLL 0 290# define EV_USE_POLL 0
255# else 291# else
256# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
257# endif 293# endif
258#endif 294#endif
259 295
260#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
261# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
262# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
263# else 299# else
264# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
265# endif 301# endif
266#endif 302#endif
267 303
… …
273# define EV_USE_PORT 0 309# define EV_USE_PORT 0
274#endif 310#endif
275 311
276#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
277# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
278# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
279# else 315# else
280# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
281# endif 317# endif
282#endif 318#endif
283 319
284#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
285# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
286# define EV_PID_HASHSIZE 1
287# else
288# define EV_PID_HASHSIZE 16
289# endif
290#endif 322#endif
291 323
292#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
293# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
294# define EV_INOTIFY_HASHSIZE 1
295# else
296# define EV_INOTIFY_HASHSIZE 16
297# endif
298#endif 326#endif
299 327
300#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
302# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
303# else 331# else
304# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
305# endif 333# endif
306#endif 334#endif
307 335
308#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
311# else 339# else
312# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
313# endif 341# endif
314#endif 342#endif
315 343
… …
318# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
319# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
320#endif 348#endif
321 349
322#ifndef EV_VERIFY 350#ifndef EV_VERIFY
323# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
324#endif 352#endif
325 353
326#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
327# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
328#endif 356#endif
329 357
330#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
331# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
332#endif 360#endif
333 361
334/* 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, */
335/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h> 365# include <sys/syscall.h>
338# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
342# else 370# else
… …
367# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
368# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
369#endif 397#endif
370 398
371#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
372# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
373# include <sys/select.h> 402# include <sys/select.h>
374# endif 403# endif
375#endif 404#endif
376 405
377#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
378# include <sys/utsname.h>
379# include <sys/statfs.h> 407# include <sys/statfs.h>
380# include <sys/inotify.h> 408# include <sys/inotify.h>
381/* 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 */
382# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
383# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
385# endif 413# endif
386#endif
387
388#if EV_SELECT_IS_WINSOCKET
389# include <winsock.h>
390#endif 414#endif
391 415
392#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
393/* 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 */
394# include <stdint.h> 418# include <stdint.h>
… …
400# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
401# else 425# else
402# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
403# endif 427# endif
404# endif 428# endif
405# ifdef __cplusplus
406extern "C" {
407# endif
408int eventfd (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
409# ifdef __cplusplus
410}
411# endif
412#endif 430#endif
413 431
414#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
415/* 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 */
416# include <stdint.h> 434# include <stdint.h>
… …
422# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
423# else 441# else
424# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
425# endif 443# endif
426# endif 444# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431 446
432struct signalfd_siginfo 447struct signalfd_siginfo
433{ 448{
434 uint32_t ssi_signo; 449 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
436}; 451};
437# ifdef __cplusplus
438}
439# endif 452#endif
440#endif
441
442 453
443/**/ 454/**/
444 455
445#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
447#else 458#else
448# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
449#endif 460#endif
450 461
451/* 462/*
452 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
453 * It is added to ev_rt_now when scheduling periodics
454 * to ensure progress, time-wise, even when rounding
455 * errors are against us.
456 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
457 * Better solutions welcome.
458 */ 465 */
459#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 */
460 468
461#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) */
462#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) */
463 471
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 0x00010002
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;
464#if __GNUC__ >= 4 519 #if __GNUC__
465# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
466# 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
467#else 535#else
468# define expect(expr,value) (expr) 536 #include <inttypes.h>
469# define noinline 537 #if UINTMAX_MAX > 0xffffffffU
470# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 538 #define ECB_PTRSIZE 8
471# define inline 539 #else
540 #define ECB_PTRSIZE 4
541 #endif
472# endif 542#endif
543
544/* many compilers define _GNUC_ to some versions but then only implement
545 * what their idiot authors think are the "more important" extensions,
546 * causing enormous grief in return for some better fake benchmark numbers.
547 * or so.
548 * we try to detect these and simply assume they are not gcc - if they have
549 * an issue with that they should have done it right in the first place.
550 */
551#ifndef ECB_GCC_VERSION
552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
553 #define ECB_GCC_VERSION(major,minor) 0
554 #else
555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
473#endif 556 #endif
557#endif
474 558
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
560#define ECB_C99 (__STDC_VERSION__ >= 199901L)
561#define ECB_C11 (__STDC_VERSION__ >= 201112L)
562#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L)
564
565#if ECB_CPP
566 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END }
569#else
570 #define ECB_EXTERN_C extern
571 #define ECB_EXTERN_C_BEG
572 #define ECB_EXTERN_C_END
573#endif
574
575/*****************************************************************************/
576
577/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
578/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
579
580#if ECB_NO_THREADS
581 #define ECB_NO_SMP 1
582#endif
583
584#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0)
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
590 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
614 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
621 #endif
622 #endif
623#endif
624
625#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
629
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model.
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */
638
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize ()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32
647 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
654 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync ()
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671 #endif
672#endif
673
674#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS
676 /*
677 * if you get undefined symbol references to pthread_mutex_lock,
678 * or failure to find pthread.h, then you should implement
679 * the ECB_MEMORY_FENCE operations for your cpu/compiler
680 * OR provide pthread.h and link against the posix thread library
681 * of your system.
682 */
683 #include <pthread.h>
684 #define ECB_NEEDS_PTHREADS 1
685 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
686
687 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
688 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
689 #endif
690#endif
691
692#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
693 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
694#endif
695
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif
699
700/*****************************************************************************/
701
702#if __cplusplus
703 #define ecb_inline static inline
704#elif ECB_GCC_VERSION(2,5)
705 #define ecb_inline static __inline__
706#elif ECB_C99
707 #define ecb_inline static inline
708#else
709 #define ecb_inline static
710#endif
711
712#if ECB_GCC_VERSION(3,3)
713 #define ecb_restrict __restrict__
714#elif ECB_C99
715 #define ecb_restrict restrict
716#else
717 #define ecb_restrict
718#endif
719
720typedef int ecb_bool;
721
722#define ECB_CONCAT_(a, b) a ## b
723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
726
727#define ecb_function_ ecb_inline
728
729#if ECB_GCC_VERSION(3,1)
730 #define ecb_attribute(attrlist) __attribute__(attrlist)
731 #define ecb_is_constant(expr) __builtin_constant_p (expr)
732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
733 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734#else
735 #define ecb_attribute(attrlist)
736 #define ecb_is_constant(expr) 0
737 #define ecb_expect(expr,value) (expr)
738 #define ecb_prefetch(addr,rw,locality)
739#endif
740
741/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5)
743 #define ecb_decltype(x) __decltype(x)
744#elif ECB_GCC_VERSION(3,0)
745 #define ecb_decltype(x) __typeof(x)
746#endif
747
748#define ecb_noinline ecb_attribute ((__noinline__))
749#define ecb_unused ecb_attribute ((__unused__))
750#define ecb_const ecb_attribute ((__const__))
751#define ecb_pure ecb_attribute ((__pure__))
752
753#if ECB_C11
754 #define ecb_noreturn _Noreturn
755#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif
758
759#if ECB_GCC_VERSION(4,3)
760 #define ecb_artificial ecb_attribute ((__artificial__))
761 #define ecb_hot ecb_attribute ((__hot__))
762 #define ecb_cold ecb_attribute ((__cold__))
763#else
764 #define ecb_artificial
765 #define ecb_hot
766 #define ecb_cold
767#endif
768
769/* put around conditional expressions if you are very sure that the */
770/* expression is mostly true or mostly false. note that these return */
771/* booleans, not the expression. */
475#define expect_false(expr) expect ((expr) != 0, 0) 772#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
476#define expect_true(expr) expect ((expr) != 0, 1) 773#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
774/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr)
777
778/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4)
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */
787#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
789 ecb_function_ int
790 ecb_ctz32 (uint32_t x)
791 {
792 int r = 0;
793
794 x &= ~x + 1; /* this isolates the lowest bit */
795
796#if ECB_branchless_on_i386
797 r += !!(x & 0xaaaaaaaa) << 0;
798 r += !!(x & 0xcccccccc) << 1;
799 r += !!(x & 0xf0f0f0f0) << 2;
800 r += !!(x & 0xff00ff00) << 3;
801 r += !!(x & 0xffff0000) << 4;
802#else
803 if (x & 0xaaaaaaaa) r += 1;
804 if (x & 0xcccccccc) r += 2;
805 if (x & 0xf0f0f0f0) r += 4;
806 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16;
808#endif
809
810 return r;
811 }
812
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
814 ecb_function_ int
815 ecb_ctz64 (uint64_t x)
816 {
817 int shift = x & 0xffffffffU ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift;
819 }
820
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
822 ecb_function_ int
823 ecb_popcount32 (uint32_t x)
824 {
825 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101;
829
830 return x >> 24;
831 }
832
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
834 ecb_function_ int ecb_ld32 (uint32_t x)
835 {
836 int r = 0;
837
838 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; }
843
844 return r;
845 }
846
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
848 ecb_function_ int ecb_ld64 (uint64_t x)
849 {
850 int r = 0;
851
852 if (x >> 32) { x >>= 32; r += 32; }
853
854 return r + ecb_ld32 (x);
855 }
856#endif
857
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
865{
866 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868}
869
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
872{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8);
877
878 return x;
879}
880
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
883{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
888 x = ( x >> 16 ) | ( x << 16);
889
890 return x;
891}
892
893/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
896ecb_function_ int
897ecb_popcount64 (uint64_t x)
898{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900}
901
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
910
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919
920#if ECB_GCC_VERSION(4,3)
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x)
924#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
926 ecb_function_ uint16_t
927 ecb_bswap16 (uint16_t x)
928 {
929 return ecb_rotl16 (x, 8);
930 }
931
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
933 ecb_function_ uint32_t
934 ecb_bswap32 (uint32_t x)
935 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 }
938
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
940 ecb_function_ uint64_t
941 ecb_bswap64 (uint64_t x)
942 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 }
945#endif
946
947#if ECB_GCC_VERSION(4,5)
948 #define ecb_unreachable() __builtin_unreachable ()
949#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn;
952 ecb_inline void ecb_unreachable (void) { }
953#endif
954
955/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
959ecb_inline unsigned char
960ecb_byteorder_helper (void)
961{
962 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971 return 0x44;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973 return 0x11;
974#else
975 union
976 {
977 uint32_t i;
978 uint8_t c;
979 } u = { 0x11223344 };
980 return u.c;
981#endif
982}
983
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988
989#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif
994
995#if __cplusplus
996 template<typename T>
997 static inline T ecb_div_rd (T val, T div)
998 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 }
1001 template<typename T>
1002 static inline T ecb_div_ru (T val, T div)
1003 {
1004 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1005 }
1006#else
1007 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1008 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1009#endif
1010
1011#if ecb_cplusplus_does_not_suck
1012 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1013 template<typename T, int N>
1014 static inline int ecb_array_length (const T (&arr)[N])
1015 {
1016 return N;
1017 }
1018#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif
1021
1022/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024
1025/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \
1028 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \
1034 || defined __alpha__ \
1035 || defined __hppa__ \
1036 || defined __ia64__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1038 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else
1041 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif
1044
1045#ifndef ECB_NO_LIBM
1046
1047 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1049 ecb_function_ uint32_t
1050 ecb_float_to_binary32 (float x)
1051 {
1052 uint32_t r;
1053
1054 #if ECB_STDFP
1055 memcpy (&r, &x, 4);
1056 #else
1057 /* slow emulation, works for anything but -0 */
1058 uint32_t m;
1059 int e;
1060
1061 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU;
1065
1066 m = frexpf (x, &e) * 0x1000000U;
1067
1068 r = m & 0x80000000U;
1069
1070 if (r)
1071 m = -m;
1072
1073 if (e <= -126)
1074 {
1075 m &= 0xffffffU;
1076 m >>= (-125 - e);
1077 e = -126;
1078 }
1079
1080 r |= (e + 126) << 23;
1081 r |= m & 0x7fffffU;
1082 #endif
1083
1084 return r;
1085 }
1086
1087 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1089 ecb_function_ float
1090 ecb_binary32_to_float (uint32_t x)
1091 {
1092 float r;
1093
1094 #if ECB_STDFP
1095 memcpy (&r, &x, 4);
1096 #else
1097 /* emulation, only works for normals and subnormals and +0 */
1098 int neg = x >> 31;
1099 int e = (x >> 23) & 0xffU;
1100
1101 x &= 0x7fffffU;
1102
1103 if (e)
1104 x |= 0x800000U;
1105 else
1106 e = 1;
1107
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1110
1111 r = neg ? -r : r;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1119 ecb_function_ uint64_t
1120 ecb_double_to_binary64 (double x)
1121 {
1122 uint64_t r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 8);
1126 #else
1127 /* slow emulation, works for anything but -0 */
1128 uint64_t m;
1129 int e;
1130
1131 if (x == 0e0 ) return 0x0000000000000000U;
1132 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1133 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1134 if (x != x ) return 0X7ff7ffffffffffffU;
1135
1136 m = frexp (x, &e) * 0x20000000000000U;
1137
1138 r = m & 0x8000000000000000;;
1139
1140 if (r)
1141 m = -m;
1142
1143 if (e <= -1022)
1144 {
1145 m &= 0x1fffffffffffffU;
1146 m >>= (-1021 - e);
1147 e = -1022;
1148 }
1149
1150 r |= ((uint64_t)(e + 1022)) << 52;
1151 r |= m & 0xfffffffffffffU;
1152 #endif
1153
1154 return r;
1155 }
1156
1157 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1159 ecb_function_ double
1160 ecb_binary64_to_double (uint64_t x)
1161 {
1162 double r;
1163
1164 #if ECB_STDFP
1165 memcpy (&r, &x, 8);
1166 #else
1167 /* emulation, only works for normals and subnormals and +0 */
1168 int neg = x >> 63;
1169 int e = (x >> 52) & 0x7ffU;
1170
1171 x &= 0xfffffffffffffU;
1172
1173 if (e)
1174 x |= 0x10000000000000U;
1175 else
1176 e = 1;
1177
1178 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1179 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1180
1181 r = neg ? -r : r;
1182 #endif
1183
1184 return r;
1185 }
1186
1187#endif
1188
1189#endif
1190
1191/* ECB.H END */
1192
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1197 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences.
1200 */
1201# error "memory fences not defined for your architecture, please report"
1202#endif
1203
1204#ifndef ECB_MEMORY_FENCE
1205# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif
1209
1210#define expect_false(cond) ecb_expect_false (cond)
1211#define expect_true(cond) ecb_expect_true (cond)
1212#define noinline ecb_noinline
1213
477#define inline_size static inline 1214#define inline_size ecb_inline
478 1215
479#if EV_MINIMAL 1216#if EV_FEATURE_CODE
1217# define inline_speed ecb_inline
1218#else
480# define inline_speed static noinline 1219# define inline_speed static noinline
481#else
482# define inline_speed static inline
483#endif 1220#endif
484 1221
485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1222#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486 1223
487#if EV_MINPRI == EV_MAXPRI 1224#if EV_MINPRI == EV_MAXPRI
… …
500#define ev_active(w) ((W)(w))->active 1237#define ev_active(w) ((W)(w))->active
501#define ev_at(w) ((WT)(w))->at 1238#define ev_at(w) ((WT)(w))->at
502 1239
503#if EV_USE_REALTIME 1240#if EV_USE_REALTIME
504/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1241/* sig_atomic_t is used to avoid per-thread variables or locking but still */
505/* giving it a reasonably high chance of working on typical architetcures */ 1242/* giving it a reasonably high chance of working on typical architectures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1243static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif 1244#endif
508 1245
509#if EV_USE_MONOTONIC 1246#if EV_USE_MONOTONIC
510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1247static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
524# include "ev_win32.c" 1261# include "ev_win32.c"
525#endif 1262#endif
526 1263
527/*****************************************************************************/ 1264/*****************************************************************************/
528 1265
1266/* define a suitable floor function (only used by periodics atm) */
1267
1268#if EV_USE_FLOOR
1269# include <math.h>
1270# define ev_floor(v) floor (v)
1271#else
1272
1273#include <float.h>
1274
1275/* a floor() replacement function, should be independent of ev_tstamp type */
1276static ev_tstamp noinline
1277ev_floor (ev_tstamp v)
1278{
1279 /* the choice of shift factor is not terribly important */
1280#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1281 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1282#else
1283 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1284#endif
1285
1286 /* argument too large for an unsigned long? */
1287 if (expect_false (v >= shift))
1288 {
1289 ev_tstamp f;
1290
1291 if (v == v - 1.)
1292 return v; /* very large number */
1293
1294 f = shift * ev_floor (v * (1. / shift));
1295 return f + ev_floor (v - f);
1296 }
1297
1298 /* special treatment for negative args? */
1299 if (expect_false (v < 0.))
1300 {
1301 ev_tstamp f = -ev_floor (-v);
1302
1303 return f - (f == v ? 0 : 1);
1304 }
1305
1306 /* fits into an unsigned long */
1307 return (unsigned long)v;
1308}
1309
1310#endif
1311
1312/*****************************************************************************/
1313
1314#ifdef __linux
1315# include <sys/utsname.h>
1316#endif
1317
1318static unsigned int noinline ecb_cold
1319ev_linux_version (void)
1320{
1321#ifdef __linux
1322 unsigned int v = 0;
1323 struct utsname buf;
1324 int i;
1325 char *p = buf.release;
1326
1327 if (uname (&buf))
1328 return 0;
1329
1330 for (i = 3+1; --i; )
1331 {
1332 unsigned int c = 0;
1333
1334 for (;;)
1335 {
1336 if (*p >= '0' && *p <= '9')
1337 c = c * 10 + *p++ - '0';
1338 else
1339 {
1340 p += *p == '.';
1341 break;
1342 }
1343 }
1344
1345 v = (v << 8) | c;
1346 }
1347
1348 return v;
1349#else
1350 return 0;
1351#endif
1352}
1353
1354/*****************************************************************************/
1355
1356#if EV_AVOID_STDIO
1357static void noinline ecb_cold
1358ev_printerr (const char *msg)
1359{
1360 write (STDERR_FILENO, msg, strlen (msg));
1361}
1362#endif
1363
529static void (*syserr_cb)(const char *msg); 1364static void (*syserr_cb)(const char *msg) EV_THROW;
530 1365
531void 1366void ecb_cold
532ev_set_syserr_cb (void (*cb)(const char *msg)) 1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
533{ 1368{
534 syserr_cb = cb; 1369 syserr_cb = cb;
535} 1370}
536 1371
537static void noinline 1372static void noinline ecb_cold
538ev_syserr (const char *msg) 1373ev_syserr (const char *msg)
539{ 1374{
540 if (!msg) 1375 if (!msg)
541 msg = "(libev) system error"; 1376 msg = "(libev) system error";
542 1377
543 if (syserr_cb) 1378 if (syserr_cb)
544 syserr_cb (msg); 1379 syserr_cb (msg);
545 else 1380 else
546 { 1381 {
1382#if EV_AVOID_STDIO
1383 ev_printerr (msg);
1384 ev_printerr (": ");
1385 ev_printerr (strerror (errno));
1386 ev_printerr ("\n");
1387#else
547 perror (msg); 1388 perror (msg);
1389#endif
548 abort (); 1390 abort ();
549 } 1391 }
550} 1392}
551 1393
552static void * 1394static void *
553ev_realloc_emul (void *ptr, long size) 1395ev_realloc_emul (void *ptr, long size) EV_THROW
554{ 1396{
555 /* some systems, notably openbsd and darwin, fail to properly 1397 /* some systems, notably openbsd and darwin, fail to properly
556 * implement realloc (x, 0) (as required by both ansi c-98 and 1398 * implement realloc (x, 0) (as required by both ansi c-89 and
557 * the single unix specification, so work around them here. 1399 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it,
1401 * despite documenting it otherwise.
558 */ 1402 */
559 1403
560 if (size) 1404 if (size)
561 return realloc (ptr, size); 1405 return realloc (ptr, size);
562 1406
563 free (ptr); 1407 free (ptr);
564 return 0; 1408 return 0;
565} 1409}
566 1410
567static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
568 1412
569void 1413void ecb_cold
570ev_set_allocator (void *(*cb)(void *ptr, long size)) 1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
571{ 1415{
572 alloc = cb; 1416 alloc = cb;
573} 1417}
574 1418
575inline_speed void * 1419inline_speed void *
… …
577{ 1421{
578 ptr = alloc (ptr, size); 1422 ptr = alloc (ptr, size);
579 1423
580 if (!ptr && size) 1424 if (!ptr && size)
581 { 1425 {
1426#if EV_AVOID_STDIO
1427 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1428#else
582 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1429 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1430#endif
583 abort (); 1431 abort ();
584 } 1432 }
585 1433
586 return ptr; 1434 return ptr;
587} 1435}
… …
603 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1451 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
604 unsigned char unused; 1452 unsigned char unused;
605#if EV_USE_EPOLL 1453#if EV_USE_EPOLL
606 unsigned int egen; /* generation counter to counter epoll bugs */ 1454 unsigned int egen; /* generation counter to counter epoll bugs */
607#endif 1455#endif
608#if EV_SELECT_IS_WINSOCKET 1456#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
609 SOCKET handle; 1457 SOCKET handle;
1458#endif
1459#if EV_USE_IOCP
1460 OVERLAPPED or, ow;
610#endif 1461#endif
611} ANFD; 1462} ANFD;
612 1463
613/* stores the pending event set for a given watcher */ 1464/* stores the pending event set for a given watcher */
614typedef struct 1465typedef struct
… …
656 #undef VAR 1507 #undef VAR
657 }; 1508 };
658 #include "ev_wrap.h" 1509 #include "ev_wrap.h"
659 1510
660 static struct ev_loop default_loop_struct; 1511 static struct ev_loop default_loop_struct;
661 struct ev_loop *ev_default_loop_ptr; 1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
662 1513
663#else 1514#else
664 1515
665 ev_tstamp ev_rt_now; 1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
666 #define VAR(name,decl) static decl; 1517 #define VAR(name,decl) static decl;
667 #include "ev_vars.h" 1518 #include "ev_vars.h"
668 #undef VAR 1519 #undef VAR
669 1520
670 static int ev_default_loop_ptr; 1521 static int ev_default_loop_ptr;
671 1522
672#endif 1523#endif
673 1524
674#if EV_MINIMAL < 2 1525#if EV_FEATURE_API
675# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1526# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
676# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1527# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
677# define EV_INVOKE_PENDING invoke_cb (EV_A) 1528# define EV_INVOKE_PENDING invoke_cb (EV_A)
678#else 1529#else
679# define EV_RELEASE_CB (void)0 1530# define EV_RELEASE_CB (void)0
680# define EV_ACQUIRE_CB (void)0 1531# define EV_ACQUIRE_CB (void)0
681# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1532# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
682#endif 1533#endif
683 1534
684#define EVUNLOOP_RECURSE 0x80 1535#define EVBREAK_RECURSE 0x80
685 1536
686/*****************************************************************************/ 1537/*****************************************************************************/
687 1538
688#ifndef EV_HAVE_EV_TIME 1539#ifndef EV_HAVE_EV_TIME
689ev_tstamp 1540ev_tstamp
690ev_time (void) 1541ev_time (void) EV_THROW
691{ 1542{
692#if EV_USE_REALTIME 1543#if EV_USE_REALTIME
693 if (expect_true (have_realtime)) 1544 if (expect_true (have_realtime))
694 { 1545 {
695 struct timespec ts; 1546 struct timespec ts;
… …
719 return ev_time (); 1570 return ev_time ();
720} 1571}
721 1572
722#if EV_MULTIPLICITY 1573#if EV_MULTIPLICITY
723ev_tstamp 1574ev_tstamp
724ev_now (EV_P) 1575ev_now (EV_P) EV_THROW
725{ 1576{
726 return ev_rt_now; 1577 return ev_rt_now;
727} 1578}
728#endif 1579#endif
729 1580
730void 1581void
731ev_sleep (ev_tstamp delay) 1582ev_sleep (ev_tstamp delay) EV_THROW
732{ 1583{
733 if (delay > 0.) 1584 if (delay > 0.)
734 { 1585 {
735#if EV_USE_NANOSLEEP 1586#if EV_USE_NANOSLEEP
736 struct timespec ts; 1587 struct timespec ts;
737 1588
738 ts.tv_sec = (time_t)delay; 1589 EV_TS_SET (ts, delay);
739 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
740
741 nanosleep (&ts, 0); 1590 nanosleep (&ts, 0);
742#elif defined(_WIN32) 1591#elif defined _WIN32
743 Sleep ((unsigned long)(delay * 1e3)); 1592 Sleep ((unsigned long)(delay * 1e3));
744#else 1593#else
745 struct timeval tv; 1594 struct timeval tv;
746 1595
747 tv.tv_sec = (time_t)delay;
748 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
749
750 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
751 /* something not guaranteed by newer posix versions, but guaranteed */ 1597 /* something not guaranteed by newer posix versions, but guaranteed */
752 /* by older ones */ 1598 /* by older ones */
1599 EV_TV_SET (tv, delay);
753 select (0, 0, 0, 0, &tv); 1600 select (0, 0, 0, 0, &tv);
754#endif 1601#endif
755 } 1602 }
756} 1603}
757 1604
758/*****************************************************************************/ 1605/*****************************************************************************/
759 1606
760#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1607#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
761 1608
762/* find a suitable new size for the given array, */ 1609/* find a suitable new size for the given array, */
763/* hopefully by rounding to a ncie-to-malloc size */ 1610/* hopefully by rounding to a nice-to-malloc size */
764inline_size int 1611inline_size int
765array_nextsize (int elem, int cur, int cnt) 1612array_nextsize (int elem, int cur, int cnt)
766{ 1613{
767 int ncur = cur + 1; 1614 int ncur = cur + 1;
768 1615
769 do 1616 do
770 ncur <<= 1; 1617 ncur <<= 1;
771 while (cnt > ncur); 1618 while (cnt > ncur);
772 1619
773 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1620 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
774 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1621 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
775 { 1622 {
776 ncur *= elem; 1623 ncur *= elem;
777 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1624 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
778 ncur = ncur - sizeof (void *) * 4; 1625 ncur = ncur - sizeof (void *) * 4;
… …
780 } 1627 }
781 1628
782 return ncur; 1629 return ncur;
783} 1630}
784 1631
785static noinline void * 1632static void * noinline ecb_cold
786array_realloc (int elem, void *base, int *cur, int cnt) 1633array_realloc (int elem, void *base, int *cur, int cnt)
787{ 1634{
788 *cur = array_nextsize (elem, *cur, cnt); 1635 *cur = array_nextsize (elem, *cur, cnt);
789 return ev_realloc (base, elem * *cur); 1636 return ev_realloc (base, elem * *cur);
790} 1637}
… …
793 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1640 memset ((void *)(base), 0, sizeof (*(base)) * (count))
794 1641
795#define array_needsize(type,base,cur,cnt,init) \ 1642#define array_needsize(type,base,cur,cnt,init) \
796 if (expect_false ((cnt) > (cur))) \ 1643 if (expect_false ((cnt) > (cur))) \
797 { \ 1644 { \
798 int ocur_ = (cur); \ 1645 int ecb_unused ocur_ = (cur); \
799 (base) = (type *)array_realloc \ 1646 (base) = (type *)array_realloc \
800 (sizeof (type), (base), &(cur), (cnt)); \ 1647 (sizeof (type), (base), &(cur), (cnt)); \
801 init ((base) + (ocur_), (cur) - ocur_); \ 1648 init ((base) + (ocur_), (cur) - ocur_); \
802 } 1649 }
803 1650
… …
821pendingcb (EV_P_ ev_prepare *w, int revents) 1668pendingcb (EV_P_ ev_prepare *w, int revents)
822{ 1669{
823} 1670}
824 1671
825void noinline 1672void noinline
826ev_feed_event (EV_P_ void *w, int revents) 1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW
827{ 1674{
828 W w_ = (W)w; 1675 W w_ = (W)w;
829 int pri = ABSPRI (w_); 1676 int pri = ABSPRI (w_);
830 1677
831 if (expect_false (w_->pending)) 1678 if (expect_false (w_->pending))
… …
835 w_->pending = ++pendingcnt [pri]; 1682 w_->pending = ++pendingcnt [pri];
836 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
837 pendings [pri][w_->pending - 1].w = w_; 1684 pendings [pri][w_->pending - 1].w = w_;
838 pendings [pri][w_->pending - 1].events = revents; 1685 pendings [pri][w_->pending - 1].events = revents;
839 } 1686 }
1687
1688 pendingpri = NUMPRI - 1;
840} 1689}
841 1690
842inline_speed void 1691inline_speed void
843feed_reverse (EV_P_ W w) 1692feed_reverse (EV_P_ W w)
844{ 1693{
… …
864} 1713}
865 1714
866/*****************************************************************************/ 1715/*****************************************************************************/
867 1716
868inline_speed void 1717inline_speed void
869fd_event_nc (EV_P_ int fd, int revents) 1718fd_event_nocheck (EV_P_ int fd, int revents)
870{ 1719{
871 ANFD *anfd = anfds + fd; 1720 ANFD *anfd = anfds + fd;
872 ev_io *w; 1721 ev_io *w;
873 1722
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1723 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
886fd_event (EV_P_ int fd, int revents) 1735fd_event (EV_P_ int fd, int revents)
887{ 1736{
888 ANFD *anfd = anfds + fd; 1737 ANFD *anfd = anfds + fd;
889 1738
890 if (expect_true (!anfd->reify)) 1739 if (expect_true (!anfd->reify))
891 fd_event_nc (EV_A_ fd, revents); 1740 fd_event_nocheck (EV_A_ fd, revents);
892} 1741}
893 1742
894void 1743void
895ev_feed_fd_event (EV_P_ int fd, int revents) 1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
896{ 1745{
897 if (fd >= 0 && fd < anfdmax) 1746 if (fd >= 0 && fd < anfdmax)
898 fd_event_nc (EV_A_ fd, revents); 1747 fd_event_nocheck (EV_A_ fd, revents);
899} 1748}
900 1749
901/* make sure the external fd watch events are in-sync */ 1750/* make sure the external fd watch events are in-sync */
902/* with the kernel/libev internal state */ 1751/* with the kernel/libev internal state */
903inline_size void 1752inline_size void
904fd_reify (EV_P) 1753fd_reify (EV_P)
905{ 1754{
906 int i; 1755 int i;
907 1756
1757#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1758 for (i = 0; i < fdchangecnt; ++i)
1759 {
1760 int fd = fdchanges [i];
1761 ANFD *anfd = anfds + fd;
1762
1763 if (anfd->reify & EV__IOFDSET && anfd->head)
1764 {
1765 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1766
1767 if (handle != anfd->handle)
1768 {
1769 unsigned long arg;
1770
1771 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1772
1773 /* handle changed, but fd didn't - we need to do it in two steps */
1774 backend_modify (EV_A_ fd, anfd->events, 0);
1775 anfd->events = 0;
1776 anfd->handle = handle;
1777 }
1778 }
1779 }
1780#endif
1781
908 for (i = 0; i < fdchangecnt; ++i) 1782 for (i = 0; i < fdchangecnt; ++i)
909 { 1783 {
910 int fd = fdchanges [i]; 1784 int fd = fdchanges [i];
911 ANFD *anfd = anfds + fd; 1785 ANFD *anfd = anfds + fd;
912 ev_io *w; 1786 ev_io *w;
913 1787
914 unsigned char events = 0; 1788 unsigned char o_events = anfd->events;
1789 unsigned char o_reify = anfd->reify;
915 1790
916 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1791 anfd->reify = 0;
917 events |= (unsigned char)w->events;
918 1792
919#if EV_SELECT_IS_WINSOCKET 1793 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
920 if (events)
921 { 1794 {
922 unsigned long arg; 1795 anfd->events = 0;
923 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1796
924 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1797 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1798 anfd->events |= (unsigned char)w->events;
1799
1800 if (o_events != anfd->events)
1801 o_reify = EV__IOFDSET; /* actually |= */
925 } 1802 }
926#endif
927 1803
928 { 1804 if (o_reify & EV__IOFDSET)
929 unsigned char o_events = anfd->events;
930 unsigned char o_reify = anfd->reify;
931
932 anfd->reify = 0;
933 anfd->events = events;
934
935 if (o_events != events || o_reify & EV__IOFDSET)
936 backend_modify (EV_A_ fd, o_events, events); 1805 backend_modify (EV_A_ fd, o_events, anfd->events);
937 }
938 } 1806 }
939 1807
940 fdchangecnt = 0; 1808 fdchangecnt = 0;
941} 1809}
942 1810
… …
954 fdchanges [fdchangecnt - 1] = fd; 1822 fdchanges [fdchangecnt - 1] = fd;
955 } 1823 }
956} 1824}
957 1825
958/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1826/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
959inline_speed void 1827inline_speed void ecb_cold
960fd_kill (EV_P_ int fd) 1828fd_kill (EV_P_ int fd)
961{ 1829{
962 ev_io *w; 1830 ev_io *w;
963 1831
964 while ((w = (ev_io *)anfds [fd].head)) 1832 while ((w = (ev_io *)anfds [fd].head))
… …
966 ev_io_stop (EV_A_ w); 1834 ev_io_stop (EV_A_ w);
967 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1835 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
968 } 1836 }
969} 1837}
970 1838
971/* check whether the given fd is atcually valid, for error recovery */ 1839/* check whether the given fd is actually valid, for error recovery */
972inline_size int 1840inline_size int ecb_cold
973fd_valid (int fd) 1841fd_valid (int fd)
974{ 1842{
975#ifdef _WIN32 1843#ifdef _WIN32
976 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1844 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
977#else 1845#else
978 return fcntl (fd, F_GETFD) != -1; 1846 return fcntl (fd, F_GETFD) != -1;
979#endif 1847#endif
980} 1848}
981 1849
982/* called on EBADF to verify fds */ 1850/* called on EBADF to verify fds */
983static void noinline 1851static void noinline ecb_cold
984fd_ebadf (EV_P) 1852fd_ebadf (EV_P)
985{ 1853{
986 int fd; 1854 int fd;
987 1855
988 for (fd = 0; fd < anfdmax; ++fd) 1856 for (fd = 0; fd < anfdmax; ++fd)
… …
990 if (!fd_valid (fd) && errno == EBADF) 1858 if (!fd_valid (fd) && errno == EBADF)
991 fd_kill (EV_A_ fd); 1859 fd_kill (EV_A_ fd);
992} 1860}
993 1861
994/* called on ENOMEM in select/poll to kill some fds and retry */ 1862/* called on ENOMEM in select/poll to kill some fds and retry */
995static void noinline 1863static void noinline ecb_cold
996fd_enomem (EV_P) 1864fd_enomem (EV_P)
997{ 1865{
998 int fd; 1866 int fd;
999 1867
1000 for (fd = anfdmax; fd--; ) 1868 for (fd = anfdmax; fd--; )
… …
1018 anfds [fd].emask = 0; 1886 anfds [fd].emask = 0;
1019 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1887 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1020 } 1888 }
1021} 1889}
1022 1890
1891/* used to prepare libev internal fd's */
1892/* this is not fork-safe */
1893inline_speed void
1894fd_intern (int fd)
1895{
1896#ifdef _WIN32
1897 unsigned long arg = 1;
1898 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1899#else
1900 fcntl (fd, F_SETFD, FD_CLOEXEC);
1901 fcntl (fd, F_SETFL, O_NONBLOCK);
1902#endif
1903}
1904
1023/*****************************************************************************/ 1905/*****************************************************************************/
1024 1906
1025/* 1907/*
1026 * the heap functions want a real array index. array index 0 uis guaranteed to not 1908 * the heap functions want a real array index. array index 0 is guaranteed to not
1027 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1909 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1028 * the branching factor of the d-tree. 1910 * the branching factor of the d-tree.
1029 */ 1911 */
1030 1912
1031/* 1913/*
… …
1179 2061
1180static ANSIG signals [EV_NSIG - 1]; 2062static ANSIG signals [EV_NSIG - 1];
1181 2063
1182/*****************************************************************************/ 2064/*****************************************************************************/
1183 2065
1184/* used to prepare libev internal fd's */ 2066#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1185/* this is not fork-safe */ 2067
2068static void noinline ecb_cold
2069evpipe_init (EV_P)
2070{
2071 if (!ev_is_active (&pipe_w))
2072 {
2073 int fds [2];
2074
2075# if EV_USE_EVENTFD
2076 fds [0] = -1;
2077 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2078 if (fds [1] < 0 && errno == EINVAL)
2079 fds [1] = eventfd (0, 0);
2080
2081 if (fds [1] < 0)
2082# endif
2083 {
2084 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe");
2086
2087 fd_intern (fds [0]);
2088 }
2089
2090 fd_intern (fds [1]);
2091
2092 evpipe [0] = fds [0];
2093
2094 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */
2096 else
2097 {
2098 /* on subsequent calls, do not change evpipe [1] */
2099 /* so that evpipe_write can always rely on its value. */
2100 /* this branch does not do anything sensible on windows, */
2101 /* so must not be executed on windows */
2102
2103 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]);
2105 }
2106
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 }
2111}
2112
1186inline_speed void 2113inline_speed void
1187fd_intern (int fd) 2114evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1188{ 2115{
1189#ifdef _WIN32 2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1190 unsigned long arg = 1;
1191 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1192#else
1193 fcntl (fd, F_SETFD, FD_CLOEXEC);
1194 fcntl (fd, F_SETFL, O_NONBLOCK);
1195#endif
1196}
1197 2117
1198static void noinline 2118 if (expect_true (*flag))
1199evpipe_init (EV_P) 2119 return;
1200{ 2120
1201 if (!ev_is_active (&pipe_w)) 2121 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123
2124 pipe_write_skipped = 1;
2125
2126 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2127
2128 if (pipe_write_wanted)
1202 { 2129 {
2130 int old_errno;
2131
2132 pipe_write_skipped = 0;
2133 ECB_MEMORY_FENCE_RELEASE;
2134
2135 old_errno = errno; /* save errno because write will clobber it */
2136
1203#if EV_USE_EVENTFD 2137#if EV_USE_EVENTFD
1204 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2138 if (evpipe [0] < 0)
1205 if (evfd < 0 && errno == EINVAL)
1206 evfd = eventfd (0, 0);
1207
1208 if (evfd >= 0)
1209 { 2139 {
1210 evpipe [0] = -1; 2140 uint64_t counter = 1;
1211 fd_intern (evfd); /* doing it twice doesn't hurt */ 2141 write (evpipe [1], &counter, sizeof (uint64_t));
1212 ev_io_set (&pipe_w, evfd, EV_READ);
1213 } 2142 }
1214 else 2143 else
1215#endif 2144#endif
1216 { 2145 {
1217 while (pipe (evpipe)) 2146#ifdef _WIN32
1218 ev_syserr ("(libev) error creating signal/async pipe"); 2147 WSABUF buf;
1219 2148 DWORD sent;
1220 fd_intern (evpipe [0]); 2149 buf.buf = &buf;
1221 fd_intern (evpipe [1]); 2150 buf.len = 1;
1222 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2152#else
2153 write (evpipe [1], &(evpipe [1]), 1);
2154#endif
1223 } 2155 }
1224
1225 ev_io_start (EV_A_ &pipe_w);
1226 ev_unref (EV_A); /* watcher should not keep loop alive */
1227 }
1228}
1229
1230inline_size void
1231evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1232{
1233 if (!*flag)
1234 {
1235 int old_errno = errno; /* save errno because write might clobber it */
1236
1237 *flag = 1;
1238
1239#if EV_USE_EVENTFD
1240 if (evfd >= 0)
1241 {
1242 uint64_t counter = 1;
1243 write (evfd, &counter, sizeof (uint64_t));
1244 }
1245 else
1246#endif
1247 write (evpipe [1], &old_errno, 1);
1248 2156
1249 errno = old_errno; 2157 errno = old_errno;
1250 } 2158 }
1251} 2159}
1252 2160
… …
1255static void 2163static void
1256pipecb (EV_P_ ev_io *iow, int revents) 2164pipecb (EV_P_ ev_io *iow, int revents)
1257{ 2165{
1258 int i; 2166 int i;
1259 2167
2168 if (revents & EV_READ)
2169 {
1260#if EV_USE_EVENTFD 2170#if EV_USE_EVENTFD
1261 if (evfd >= 0) 2171 if (evpipe [0] < 0)
1262 { 2172 {
1263 uint64_t counter; 2173 uint64_t counter;
1264 read (evfd, &counter, sizeof (uint64_t)); 2174 read (evpipe [1], &counter, sizeof (uint64_t));
1265 } 2175 }
1266 else 2176 else
1267#endif 2177#endif
1268 { 2178 {
1269 char dummy; 2179 char dummy[4];
2180#ifdef _WIN32
2181 WSABUF buf;
2182 DWORD recvd;
2183 DWORD flags = 0;
2184 buf.buf = dummy;
2185 buf.len = sizeof (dummy);
2186 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2187#else
1270 read (evpipe [0], &dummy, 1); 2188 read (evpipe [0], &dummy, sizeof (dummy));
2189#endif
2190 }
1271 } 2191 }
1272 2192
2193 pipe_write_skipped = 0;
2194
2195 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2196
2197#if EV_SIGNAL_ENABLE
1273 if (sig_pending) 2198 if (sig_pending)
1274 { 2199 {
1275 sig_pending = 0; 2200 sig_pending = 0;
2201
2202 ECB_MEMORY_FENCE;
1276 2203
1277 for (i = EV_NSIG - 1; i--; ) 2204 for (i = EV_NSIG - 1; i--; )
1278 if (expect_false (signals [i].pending)) 2205 if (expect_false (signals [i].pending))
1279 ev_feed_signal_event (EV_A_ i + 1); 2206 ev_feed_signal_event (EV_A_ i + 1);
1280 } 2207 }
2208#endif
1281 2209
1282#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1283 if (async_pending) 2211 if (async_pending)
1284 { 2212 {
1285 async_pending = 0; 2213 async_pending = 0;
2214
2215 ECB_MEMORY_FENCE;
1286 2216
1287 for (i = asynccnt; i--; ) 2217 for (i = asynccnt; i--; )
1288 if (asyncs [i]->sent) 2218 if (asyncs [i]->sent)
1289 { 2219 {
1290 asyncs [i]->sent = 0; 2220 asyncs [i]->sent = 0;
2221 ECB_MEMORY_FENCE_RELEASE;
1291 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1292 } 2223 }
1293 } 2224 }
1294#endif 2225#endif
1295} 2226}
1296 2227
1297/*****************************************************************************/ 2228/*****************************************************************************/
1298 2229
2230void
2231ev_feed_signal (int signum) EV_THROW
2232{
2233#if EV_MULTIPLICITY
2234 ECB_MEMORY_FENCE_ACQUIRE;
2235 EV_P = signals [signum - 1].loop;
2236
2237 if (!EV_A)
2238 return;
2239#endif
2240
2241 signals [signum - 1].pending = 1;
2242 evpipe_write (EV_A_ &sig_pending);
2243}
2244
1299static void 2245static void
1300ev_sighandler (int signum) 2246ev_sighandler (int signum)
1301{ 2247{
1302#if EV_MULTIPLICITY
1303 EV_P = signals [signum - 1].loop;
1304#endif
1305
1306#ifdef _WIN32 2248#ifdef _WIN32
1307 signal (signum, ev_sighandler); 2249 signal (signum, ev_sighandler);
1308#endif 2250#endif
1309 2251
1310 signals [signum - 1].pending = 1; 2252 ev_feed_signal (signum);
1311 evpipe_write (EV_A_ &sig_pending);
1312} 2253}
1313 2254
1314void noinline 2255void noinline
1315ev_feed_signal_event (EV_P_ int signum) 2256ev_feed_signal_event (EV_P_ int signum) EV_THROW
1316{ 2257{
1317 WL w; 2258 WL w;
1318 2259
1319 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2260 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1320 return; 2261 return;
1321 2262
1322 --signum; 2263 --signum;
1323 2264
1324#if EV_MULTIPLICITY 2265#if EV_MULTIPLICITY
… …
1328 if (expect_false (signals [signum].loop != EV_A)) 2269 if (expect_false (signals [signum].loop != EV_A))
1329 return; 2270 return;
1330#endif 2271#endif
1331 2272
1332 signals [signum].pending = 0; 2273 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE;
1333 2275
1334 for (w = signals [signum].head; w; w = w->next) 2276 for (w = signals [signum].head; w; w = w->next)
1335 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2277 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1336} 2278}
1337 2279
… …
1353 break; 2295 break;
1354 } 2296 }
1355} 2297}
1356#endif 2298#endif
1357 2299
2300#endif
2301
1358/*****************************************************************************/ 2302/*****************************************************************************/
1359 2303
2304#if EV_CHILD_ENABLE
1360static WL childs [EV_PID_HASHSIZE]; 2305static WL childs [EV_PID_HASHSIZE];
1361
1362#ifndef _WIN32
1363 2306
1364static ev_signal childev; 2307static ev_signal childev;
1365 2308
1366#ifndef WIFCONTINUED 2309#ifndef WIFCONTINUED
1367# define WIFCONTINUED(status) 0 2310# define WIFCONTINUED(status) 0
… …
1372child_reap (EV_P_ int chain, int pid, int status) 2315child_reap (EV_P_ int chain, int pid, int status)
1373{ 2316{
1374 ev_child *w; 2317 ev_child *w;
1375 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2318 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1376 2319
1377 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2320 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1378 { 2321 {
1379 if ((w->pid == pid || !w->pid) 2322 if ((w->pid == pid || !w->pid)
1380 && (!traced || (w->flags & 1))) 2323 && (!traced || (w->flags & 1)))
1381 { 2324 {
1382 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2325 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1407 /* make sure we are called again until all children have been reaped */ 2350 /* make sure we are called again until all children have been reaped */
1408 /* we need to do it this way so that the callback gets called before we continue */ 2351 /* we need to do it this way so that the callback gets called before we continue */
1409 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2352 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1410 2353
1411 child_reap (EV_A_ pid, pid, status); 2354 child_reap (EV_A_ pid, pid, status);
1412 if (EV_PID_HASHSIZE > 1) 2355 if ((EV_PID_HASHSIZE) > 1)
1413 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2356 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1414} 2357}
1415 2358
1416#endif 2359#endif
1417 2360
1418/*****************************************************************************/ 2361/*****************************************************************************/
1419 2362
2363#if EV_USE_IOCP
2364# include "ev_iocp.c"
2365#endif
1420#if EV_USE_PORT 2366#if EV_USE_PORT
1421# include "ev_port.c" 2367# include "ev_port.c"
1422#endif 2368#endif
1423#if EV_USE_KQUEUE 2369#if EV_USE_KQUEUE
1424# include "ev_kqueue.c" 2370# include "ev_kqueue.c"
… …
1431#endif 2377#endif
1432#if EV_USE_SELECT 2378#if EV_USE_SELECT
1433# include "ev_select.c" 2379# include "ev_select.c"
1434#endif 2380#endif
1435 2381
1436int 2382int ecb_cold
1437ev_version_major (void) 2383ev_version_major (void) EV_THROW
1438{ 2384{
1439 return EV_VERSION_MAJOR; 2385 return EV_VERSION_MAJOR;
1440} 2386}
1441 2387
1442int 2388int ecb_cold
1443ev_version_minor (void) 2389ev_version_minor (void) EV_THROW
1444{ 2390{
1445 return EV_VERSION_MINOR; 2391 return EV_VERSION_MINOR;
1446} 2392}
1447 2393
1448/* return true if we are running with elevated privileges and should ignore env variables */ 2394/* return true if we are running with elevated privileges and should ignore env variables */
1449int inline_size 2395int inline_size ecb_cold
1450enable_secure (void) 2396enable_secure (void)
1451{ 2397{
1452#ifdef _WIN32 2398#ifdef _WIN32
1453 return 0; 2399 return 0;
1454#else 2400#else
1455 return getuid () != geteuid () 2401 return getuid () != geteuid ()
1456 || getgid () != getegid (); 2402 || getgid () != getegid ();
1457#endif 2403#endif
1458} 2404}
1459 2405
1460unsigned int 2406unsigned int ecb_cold
1461ev_supported_backends (void) 2407ev_supported_backends (void) EV_THROW
1462{ 2408{
1463 unsigned int flags = 0; 2409 unsigned int flags = 0;
1464 2410
1465 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1466 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1469 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2415 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1470 2416
1471 return flags; 2417 return flags;
1472} 2418}
1473 2419
1474unsigned int 2420unsigned int ecb_cold
1475ev_recommended_backends (void) 2421ev_recommended_backends (void) EV_THROW
1476{ 2422{
1477 unsigned int flags = ev_supported_backends (); 2423 unsigned int flags = ev_supported_backends ();
1478 2424
1479#ifndef __NetBSD__ 2425#ifndef __NetBSD__
1480 /* kqueue is borked on everything but netbsd apparently */ 2426 /* kqueue is borked on everything but netbsd apparently */
… …
1484#ifdef __APPLE__ 2430#ifdef __APPLE__
1485 /* only select works correctly on that "unix-certified" platform */ 2431 /* only select works correctly on that "unix-certified" platform */
1486 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2432 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1487 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2433 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1488#endif 2434#endif
2435#ifdef __FreeBSD__
2436 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2437#endif
1489 2438
1490 return flags; 2439 return flags;
1491} 2440}
1492 2441
2442unsigned int ecb_cold
2443ev_embeddable_backends (void) EV_THROW
2444{
2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2446
2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2449 flags &= ~EVBACKEND_EPOLL;
2450
2451 return flags;
2452}
2453
1493unsigned int 2454unsigned int
1494ev_embeddable_backends (void) 2455ev_backend (EV_P) EV_THROW
1495{ 2456{
1496 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2457 return backend;
1497
1498 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1499 /* please fix it and tell me how to detect the fix */
1500 flags &= ~EVBACKEND_EPOLL;
1501
1502 return flags;
1503} 2458}
1504 2459
2460#if EV_FEATURE_API
1505unsigned int 2461unsigned int
1506ev_backend (EV_P) 2462ev_iteration (EV_P) EV_THROW
1507{ 2463{
1508 return backend; 2464 return loop_count;
1509} 2465}
1510 2466
1511#if EV_MINIMAL < 2
1512unsigned int 2467unsigned int
1513ev_loop_count (EV_P) 2468ev_depth (EV_P) EV_THROW
1514{
1515 return loop_count;
1516}
1517
1518unsigned int
1519ev_loop_depth (EV_P)
1520{ 2469{
1521 return loop_depth; 2470 return loop_depth;
1522} 2471}
1523 2472
1524void 2473void
1525ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1526{ 2475{
1527 io_blocktime = interval; 2476 io_blocktime = interval;
1528} 2477}
1529 2478
1530void 2479void
1531ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1532{ 2481{
1533 timeout_blocktime = interval; 2482 timeout_blocktime = interval;
1534} 2483}
1535 2484
1536void 2485void
1537ev_set_userdata (EV_P_ void *data) 2486ev_set_userdata (EV_P_ void *data) EV_THROW
1538{ 2487{
1539 userdata = data; 2488 userdata = data;
1540} 2489}
1541 2490
1542void * 2491void *
1543ev_userdata (EV_P) 2492ev_userdata (EV_P) EV_THROW
1544{ 2493{
1545 return userdata; 2494 return userdata;
1546} 2495}
1547 2496
2497void
1548void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1549{ 2499{
1550 invoke_cb = invoke_pending_cb; 2500 invoke_cb = invoke_pending_cb;
1551} 2501}
1552 2502
2503void
1553void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1554{ 2505{
1555 release_cb = release; 2506 release_cb = release;
1556 acquire_cb = acquire; 2507 acquire_cb = acquire;
1557} 2508}
1558#endif 2509#endif
1559 2510
1560/* initialise a loop structure, must be zero-initialised */ 2511/* initialise a loop structure, must be zero-initialised */
1561static void noinline 2512static void noinline ecb_cold
1562loop_init (EV_P_ unsigned int flags) 2513loop_init (EV_P_ unsigned int flags) EV_THROW
1563{ 2514{
1564 if (!backend) 2515 if (!backend)
1565 { 2516 {
2517 origflags = flags;
2518
1566#if EV_USE_REALTIME 2519#if EV_USE_REALTIME
1567 if (!have_realtime) 2520 if (!have_realtime)
1568 { 2521 {
1569 struct timespec ts; 2522 struct timespec ts;
1570 2523
… …
1592 if (!(flags & EVFLAG_NOENV) 2545 if (!(flags & EVFLAG_NOENV)
1593 && !enable_secure () 2546 && !enable_secure ()
1594 && getenv ("LIBEV_FLAGS")) 2547 && getenv ("LIBEV_FLAGS"))
1595 flags = atoi (getenv ("LIBEV_FLAGS")); 2548 flags = atoi (getenv ("LIBEV_FLAGS"));
1596 2549
1597 ev_rt_now = ev_time (); 2550 ev_rt_now = ev_time ();
1598 mn_now = get_clock (); 2551 mn_now = get_clock ();
1599 now_floor = mn_now; 2552 now_floor = mn_now;
1600 rtmn_diff = ev_rt_now - mn_now; 2553 rtmn_diff = ev_rt_now - mn_now;
1601#if EV_MINIMAL < 2 2554#if EV_FEATURE_API
1602 invoke_cb = ev_invoke_pending; 2555 invoke_cb = ev_invoke_pending;
1603#endif 2556#endif
1604 2557
1605 io_blocktime = 0.; 2558 io_blocktime = 0.;
1606 timeout_blocktime = 0.; 2559 timeout_blocktime = 0.;
1607 backend = 0; 2560 backend = 0;
1608 backend_fd = -1; 2561 backend_fd = -1;
1609 sig_pending = 0; 2562 sig_pending = 0;
1610#if EV_ASYNC_ENABLE 2563#if EV_ASYNC_ENABLE
1611 async_pending = 0; 2564 async_pending = 0;
1612#endif 2565#endif
2566 pipe_write_skipped = 0;
2567 pipe_write_wanted = 0;
2568 evpipe [0] = -1;
2569 evpipe [1] = -1;
1613#if EV_USE_INOTIFY 2570#if EV_USE_INOTIFY
1614 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1615#endif 2572#endif
1616#if EV_USE_SIGNALFD 2573#if EV_USE_SIGNALFD
1617 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1618#endif 2575#endif
1619 2576
1620 if (!(flags & 0x0000ffffU)) 2577 if (!(flags & EVBACKEND_MASK))
1621 flags |= ev_recommended_backends (); 2578 flags |= ev_recommended_backends ();
1622 2579
2580#if EV_USE_IOCP
2581 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2582#endif
1623#if EV_USE_PORT 2583#if EV_USE_PORT
1624 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2584 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1625#endif 2585#endif
1626#if EV_USE_KQUEUE 2586#if EV_USE_KQUEUE
1627 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2587 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1636 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2596 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1637#endif 2597#endif
1638 2598
1639 ev_prepare_init (&pending_w, pendingcb); 2599 ev_prepare_init (&pending_w, pendingcb);
1640 2600
2601#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1641 ev_init (&pipe_w, pipecb); 2602 ev_init (&pipe_w, pipecb);
1642 ev_set_priority (&pipe_w, EV_MAXPRI); 2603 ev_set_priority (&pipe_w, EV_MAXPRI);
2604#endif
1643 } 2605 }
1644} 2606}
1645 2607
1646/* free up a loop structure */ 2608/* free up a loop structure */
1647static void noinline 2609void ecb_cold
1648loop_destroy (EV_P) 2610ev_loop_destroy (EV_P)
1649{ 2611{
1650 int i; 2612 int i;
2613
2614#if EV_MULTIPLICITY
2615 /* mimic free (0) */
2616 if (!EV_A)
2617 return;
2618#endif
2619
2620#if EV_CLEANUP_ENABLE
2621 /* queue cleanup watchers (and execute them) */
2622 if (expect_false (cleanupcnt))
2623 {
2624 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2625 EV_INVOKE_PENDING;
2626 }
2627#endif
2628
2629#if EV_CHILD_ENABLE
2630 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2631 {
2632 ev_ref (EV_A); /* child watcher */
2633 ev_signal_stop (EV_A_ &childev);
2634 }
2635#endif
1651 2636
1652 if (ev_is_active (&pipe_w)) 2637 if (ev_is_active (&pipe_w))
1653 { 2638 {
1654 /*ev_ref (EV_A);*/ 2639 /*ev_ref (EV_A);*/
1655 /*ev_io_stop (EV_A_ &pipe_w);*/ 2640 /*ev_io_stop (EV_A_ &pipe_w);*/
1656 2641
1657#if EV_USE_EVENTFD
1658 if (evfd >= 0)
1659 close (evfd);
1660#endif
1661
1662 if (evpipe [0] >= 0)
1663 {
1664 EV_WIN32_CLOSE_FD (evpipe [0]); 2642 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1665 EV_WIN32_CLOSE_FD (evpipe [1]); 2643 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1666 }
1667 } 2644 }
1668 2645
1669#if EV_USE_SIGNALFD 2646#if EV_USE_SIGNALFD
1670 if (ev_is_active (&sigfd_w)) 2647 if (ev_is_active (&sigfd_w))
1671 close (sigfd); 2648 close (sigfd);
… …
1677#endif 2654#endif
1678 2655
1679 if (backend_fd >= 0) 2656 if (backend_fd >= 0)
1680 close (backend_fd); 2657 close (backend_fd);
1681 2658
2659#if EV_USE_IOCP
2660 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2661#endif
1682#if EV_USE_PORT 2662#if EV_USE_PORT
1683 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2663 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1684#endif 2664#endif
1685#if EV_USE_KQUEUE 2665#if EV_USE_KQUEUE
1686 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2666 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1713 array_free (periodic, EMPTY); 2693 array_free (periodic, EMPTY);
1714#endif 2694#endif
1715#if EV_FORK_ENABLE 2695#if EV_FORK_ENABLE
1716 array_free (fork, EMPTY); 2696 array_free (fork, EMPTY);
1717#endif 2697#endif
2698#if EV_CLEANUP_ENABLE
2699 array_free (cleanup, EMPTY);
2700#endif
1718 array_free (prepare, EMPTY); 2701 array_free (prepare, EMPTY);
1719 array_free (check, EMPTY); 2702 array_free (check, EMPTY);
1720#if EV_ASYNC_ENABLE 2703#if EV_ASYNC_ENABLE
1721 array_free (async, EMPTY); 2704 array_free (async, EMPTY);
1722#endif 2705#endif
1723 2706
1724 backend = 0; 2707 backend = 0;
2708
2709#if EV_MULTIPLICITY
2710 if (ev_is_default_loop (EV_A))
2711#endif
2712 ev_default_loop_ptr = 0;
2713#if EV_MULTIPLICITY
2714 else
2715 ev_free (EV_A);
2716#endif
1725} 2717}
1726 2718
1727#if EV_USE_INOTIFY 2719#if EV_USE_INOTIFY
1728inline_size void infy_fork (EV_P); 2720inline_size void infy_fork (EV_P);
1729#endif 2721#endif
… …
1742#endif 2734#endif
1743#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1744 infy_fork (EV_A); 2736 infy_fork (EV_A);
1745#endif 2737#endif
1746 2738
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1747 if (ev_is_active (&pipe_w)) 2740 if (ev_is_active (&pipe_w))
1748 { 2741 {
1749 /* this "locks" the handlers against writing to the pipe */ 2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1750 /* while we modify the fd vars */
1751 sig_pending = 1;
1752#if EV_ASYNC_ENABLE
1753 async_pending = 1;
1754#endif
1755 2743
1756 ev_ref (EV_A); 2744 ev_ref (EV_A);
1757 ev_io_stop (EV_A_ &pipe_w); 2745 ev_io_stop (EV_A_ &pipe_w);
1758 2746
1759#if EV_USE_EVENTFD
1760 if (evfd >= 0)
1761 close (evfd);
1762#endif
1763
1764 if (evpipe [0] >= 0) 2747 if (evpipe [0] >= 0)
1765 {
1766 EV_WIN32_CLOSE_FD (evpipe [0]); 2748 EV_WIN32_CLOSE_FD (evpipe [0]);
1767 EV_WIN32_CLOSE_FD (evpipe [1]);
1768 }
1769 2749
1770 evpipe_init (EV_A); 2750 evpipe_init (EV_A);
1771 /* now iterate over everything, in case we missed something */ 2751 /* iterate over everything, in case we missed something before */
1772 pipecb (EV_A_ &pipe_w, EV_READ); 2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1773 } 2753 }
2754#endif
1774 2755
1775 postfork = 0; 2756 postfork = 0;
1776} 2757}
1777 2758
1778#if EV_MULTIPLICITY 2759#if EV_MULTIPLICITY
1779 2760
1780struct ev_loop * 2761struct ev_loop * ecb_cold
1781ev_loop_new (unsigned int flags) 2762ev_loop_new (unsigned int flags) EV_THROW
1782{ 2763{
1783 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1784 2765
1785 memset (EV_A, 0, sizeof (struct ev_loop)); 2766 memset (EV_A, 0, sizeof (struct ev_loop));
1786 loop_init (EV_A_ flags); 2767 loop_init (EV_A_ flags);
1787 2768
1788 if (ev_backend (EV_A)) 2769 if (ev_backend (EV_A))
1789 return EV_A; 2770 return EV_A;
1790 2771
2772 ev_free (EV_A);
1791 return 0; 2773 return 0;
1792} 2774}
1793 2775
1794void
1795ev_loop_destroy (EV_P)
1796{
1797 loop_destroy (EV_A);
1798 ev_free (loop);
1799}
1800
1801void
1802ev_loop_fork (EV_P)
1803{
1804 postfork = 1; /* must be in line with ev_default_fork */
1805}
1806#endif /* multiplicity */ 2776#endif /* multiplicity */
1807 2777
1808#if EV_VERIFY 2778#if EV_VERIFY
1809static void noinline 2779static void noinline ecb_cold
1810verify_watcher (EV_P_ W w) 2780verify_watcher (EV_P_ W w)
1811{ 2781{
1812 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2782 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1813 2783
1814 if (w->pending) 2784 if (w->pending)
1815 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2785 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1816} 2786}
1817 2787
1818static void noinline 2788static void noinline ecb_cold
1819verify_heap (EV_P_ ANHE *heap, int N) 2789verify_heap (EV_P_ ANHE *heap, int N)
1820{ 2790{
1821 int i; 2791 int i;
1822 2792
1823 for (i = HEAP0; i < N + HEAP0; ++i) 2793 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1828 2798
1829 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2799 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1830 } 2800 }
1831} 2801}
1832 2802
1833static void noinline 2803static void noinline ecb_cold
1834array_verify (EV_P_ W *ws, int cnt) 2804array_verify (EV_P_ W *ws, int cnt)
1835{ 2805{
1836 while (cnt--) 2806 while (cnt--)
1837 { 2807 {
1838 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2808 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1839 verify_watcher (EV_A_ ws [cnt]); 2809 verify_watcher (EV_A_ ws [cnt]);
1840 } 2810 }
1841} 2811}
1842#endif 2812#endif
1843 2813
1844#if EV_MINIMAL < 2 2814#if EV_FEATURE_API
1845void 2815void ecb_cold
1846ev_loop_verify (EV_P) 2816ev_verify (EV_P) EV_THROW
1847{ 2817{
1848#if EV_VERIFY 2818#if EV_VERIFY
1849 int i; 2819 int i;
1850 WL w; 2820 WL w, w2;
1851 2821
1852 assert (activecnt >= -1); 2822 assert (activecnt >= -1);
1853 2823
1854 assert (fdchangemax >= fdchangecnt); 2824 assert (fdchangemax >= fdchangecnt);
1855 for (i = 0; i < fdchangecnt; ++i) 2825 for (i = 0; i < fdchangecnt; ++i)
1856 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2826 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1857 2827
1858 assert (anfdmax >= 0); 2828 assert (anfdmax >= 0);
1859 for (i = 0; i < anfdmax; ++i) 2829 for (i = 0; i < anfdmax; ++i)
2830 {
2831 int j = 0;
2832
1860 for (w = anfds [i].head; w; w = w->next) 2833 for (w = w2 = anfds [i].head; w; w = w->next)
1861 { 2834 {
1862 verify_watcher (EV_A_ (W)w); 2835 verify_watcher (EV_A_ (W)w);
2836
2837 if (j++ & 1)
2838 {
2839 assert (("libev: io watcher list contains a loop", w != w2));
2840 w2 = w2->next;
2841 }
2842
1863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2843 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2844 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1865 } 2845 }
2846 }
1866 2847
1867 assert (timermax >= timercnt); 2848 assert (timermax >= timercnt);
1868 verify_heap (EV_A_ timers, timercnt); 2849 verify_heap (EV_A_ timers, timercnt);
1869 2850
1870#if EV_PERIODIC_ENABLE 2851#if EV_PERIODIC_ENABLE
… …
1885#if EV_FORK_ENABLE 2866#if EV_FORK_ENABLE
1886 assert (forkmax >= forkcnt); 2867 assert (forkmax >= forkcnt);
1887 array_verify (EV_A_ (W *)forks, forkcnt); 2868 array_verify (EV_A_ (W *)forks, forkcnt);
1888#endif 2869#endif
1889 2870
2871#if EV_CLEANUP_ENABLE
2872 assert (cleanupmax >= cleanupcnt);
2873 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2874#endif
2875
1890#if EV_ASYNC_ENABLE 2876#if EV_ASYNC_ENABLE
1891 assert (asyncmax >= asynccnt); 2877 assert (asyncmax >= asynccnt);
1892 array_verify (EV_A_ (W *)asyncs, asynccnt); 2878 array_verify (EV_A_ (W *)asyncs, asynccnt);
1893#endif 2879#endif
1894 2880
2881#if EV_PREPARE_ENABLE
1895 assert (preparemax >= preparecnt); 2882 assert (preparemax >= preparecnt);
1896 array_verify (EV_A_ (W *)prepares, preparecnt); 2883 array_verify (EV_A_ (W *)prepares, preparecnt);
2884#endif
1897 2885
2886#if EV_CHECK_ENABLE
1898 assert (checkmax >= checkcnt); 2887 assert (checkmax >= checkcnt);
1899 array_verify (EV_A_ (W *)checks, checkcnt); 2888 array_verify (EV_A_ (W *)checks, checkcnt);
2889#endif
1900 2890
1901# if 0 2891# if 0
2892#if EV_CHILD_ENABLE
1902 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2893 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1903 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2894 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2895#endif
1904# endif 2896# endif
1905#endif 2897#endif
1906} 2898}
1907#endif 2899#endif
1908 2900
1909#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
1910struct ev_loop * 2902struct ev_loop * ecb_cold
1911ev_default_loop_init (unsigned int flags)
1912#else 2903#else
1913int 2904int
2905#endif
1914ev_default_loop (unsigned int flags) 2906ev_default_loop (unsigned int flags) EV_THROW
1915#endif
1916{ 2907{
1917 if (!ev_default_loop_ptr) 2908 if (!ev_default_loop_ptr)
1918 { 2909 {
1919#if EV_MULTIPLICITY 2910#if EV_MULTIPLICITY
1920 EV_P = ev_default_loop_ptr = &default_loop_struct; 2911 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1924 2915
1925 loop_init (EV_A_ flags); 2916 loop_init (EV_A_ flags);
1926 2917
1927 if (ev_backend (EV_A)) 2918 if (ev_backend (EV_A))
1928 { 2919 {
1929#ifndef _WIN32 2920#if EV_CHILD_ENABLE
1930 ev_signal_init (&childev, childcb, SIGCHLD); 2921 ev_signal_init (&childev, childcb, SIGCHLD);
1931 ev_set_priority (&childev, EV_MAXPRI); 2922 ev_set_priority (&childev, EV_MAXPRI);
1932 ev_signal_start (EV_A_ &childev); 2923 ev_signal_start (EV_A_ &childev);
1933 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2924 ev_unref (EV_A); /* child watcher should not keep loop alive */
1934#endif 2925#endif
… …
1939 2930
1940 return ev_default_loop_ptr; 2931 return ev_default_loop_ptr;
1941} 2932}
1942 2933
1943void 2934void
1944ev_default_destroy (void) 2935ev_loop_fork (EV_P) EV_THROW
1945{ 2936{
1946#if EV_MULTIPLICITY 2937 postfork = 1;
1947 EV_P = ev_default_loop_ptr;
1948#endif
1949
1950 ev_default_loop_ptr = 0;
1951
1952#ifndef _WIN32
1953 ev_ref (EV_A); /* child watcher */
1954 ev_signal_stop (EV_A_ &childev);
1955#endif
1956
1957 loop_destroy (EV_A);
1958}
1959
1960void
1961ev_default_fork (void)
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = ev_default_loop_ptr;
1965#endif
1966
1967 postfork = 1; /* must be in line with ev_loop_fork */
1968} 2938}
1969 2939
1970/*****************************************************************************/ 2940/*****************************************************************************/
1971 2941
1972void 2942void
… …
1974{ 2944{
1975 EV_CB_INVOKE ((W)w, revents); 2945 EV_CB_INVOKE ((W)w, revents);
1976} 2946}
1977 2947
1978unsigned int 2948unsigned int
1979ev_pending_count (EV_P) 2949ev_pending_count (EV_P) EV_THROW
1980{ 2950{
1981 int pri; 2951 int pri;
1982 unsigned int count = 0; 2952 unsigned int count = 0;
1983 2953
1984 for (pri = NUMPRI; pri--; ) 2954 for (pri = NUMPRI; pri--; )
… …
1988} 2958}
1989 2959
1990void noinline 2960void noinline
1991ev_invoke_pending (EV_P) 2961ev_invoke_pending (EV_P)
1992{ 2962{
1993 int pri; 2963 pendingpri = NUMPRI;
1994 2964
1995 for (pri = NUMPRI; pri--; ) 2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2966 {
2967 --pendingpri;
2968
1996 while (pendingcnt [pri]) 2969 while (pendingcnt [pendingpri])
1997 { 2970 {
1998 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1999 2972
2000 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2001 /* ^ this is no longer true, as pending_w could be here */
2002
2003 p->w->pending = 0; 2973 p->w->pending = 0;
2004 EV_CB_INVOKE (p->w, p->events); 2974 EV_CB_INVOKE (p->w, p->events);
2005 EV_FREQUENT_CHECK; 2975 EV_FREQUENT_CHECK;
2006 } 2976 }
2977 }
2007} 2978}
2008 2979
2009#if EV_IDLE_ENABLE 2980#if EV_IDLE_ENABLE
2010/* make idle watchers pending. this handles the "call-idle */ 2981/* make idle watchers pending. this handles the "call-idle */
2011/* only when higher priorities are idle" logic */ 2982/* only when higher priorities are idle" logic */
… …
2063 EV_FREQUENT_CHECK; 3034 EV_FREQUENT_CHECK;
2064 feed_reverse (EV_A_ (W)w); 3035 feed_reverse (EV_A_ (W)w);
2065 } 3036 }
2066 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3037 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2067 3038
2068 feed_reverse_done (EV_A_ EV_TIMEOUT); 3039 feed_reverse_done (EV_A_ EV_TIMER);
2069 } 3040 }
2070} 3041}
2071 3042
2072#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
3044
3045static void noinline
3046periodic_recalc (EV_P_ ev_periodic *w)
3047{
3048 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3049 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3050
3051 /* the above almost always errs on the low side */
3052 while (at <= ev_rt_now)
3053 {
3054 ev_tstamp nat = at + w->interval;
3055
3056 /* when resolution fails us, we use ev_rt_now */
3057 if (expect_false (nat == at))
3058 {
3059 at = ev_rt_now;
3060 break;
3061 }
3062
3063 at = nat;
3064 }
3065
3066 ev_at (w) = at;
3067}
3068
2073/* make periodics pending */ 3069/* make periodics pending */
2074inline_size void 3070inline_size void
2075periodics_reify (EV_P) 3071periodics_reify (EV_P)
2076{ 3072{
2077 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2078 3074
2079 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3075 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2080 { 3076 {
2081 int feed_count = 0;
2082
2083 do 3077 do
2084 { 3078 {
2085 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3079 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2086 3080
2087 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3081 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2096 ANHE_at_cache (periodics [HEAP0]); 3090 ANHE_at_cache (periodics [HEAP0]);
2097 downheap (periodics, periodiccnt, HEAP0); 3091 downheap (periodics, periodiccnt, HEAP0);
2098 } 3092 }
2099 else if (w->interval) 3093 else if (w->interval)
2100 { 3094 {
2101 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3095 periodic_recalc (EV_A_ w);
2102 /* if next trigger time is not sufficiently in the future, put it there */
2103 /* this might happen because of floating point inexactness */
2104 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2105 {
2106 ev_at (w) += w->interval;
2107
2108 /* if interval is unreasonably low we might still have a time in the past */
2109 /* so correct this. this will make the periodic very inexact, but the user */
2110 /* has effectively asked to get triggered more often than possible */
2111 if (ev_at (w) < ev_rt_now)
2112 ev_at (w) = ev_rt_now;
2113 }
2114
2115 ANHE_at_cache (periodics [HEAP0]); 3096 ANHE_at_cache (periodics [HEAP0]);
2116 downheap (periodics, periodiccnt, HEAP0); 3097 downheap (periodics, periodiccnt, HEAP0);
2117 } 3098 }
2118 else 3099 else
2119 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3100 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2126 feed_reverse_done (EV_A_ EV_PERIODIC); 3107 feed_reverse_done (EV_A_ EV_PERIODIC);
2127 } 3108 }
2128} 3109}
2129 3110
2130/* simply recalculate all periodics */ 3111/* simply recalculate all periodics */
2131/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3112/* TODO: maybe ensure that at least one event happens when jumping forward? */
2132static void noinline 3113static void noinline ecb_cold
2133periodics_reschedule (EV_P) 3114periodics_reschedule (EV_P)
2134{ 3115{
2135 int i; 3116 int i;
2136 3117
2137 /* adjust periodics after time jump */ 3118 /* adjust periodics after time jump */
… …
2140 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2141 3122
2142 if (w->reschedule_cb) 3123 if (w->reschedule_cb)
2143 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3124 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2144 else if (w->interval) 3125 else if (w->interval)
2145 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3126 periodic_recalc (EV_A_ w);
2146 3127
2147 ANHE_at_cache (periodics [i]); 3128 ANHE_at_cache (periodics [i]);
2148 } 3129 }
2149 3130
2150 reheap (periodics, periodiccnt); 3131 reheap (periodics, periodiccnt);
2151} 3132}
2152#endif 3133#endif
2153 3134
2154/* adjust all timers by a given offset */ 3135/* adjust all timers by a given offset */
2155static void noinline 3136static void noinline ecb_cold
2156timers_reschedule (EV_P_ ev_tstamp adjust) 3137timers_reschedule (EV_P_ ev_tstamp adjust)
2157{ 3138{
2158 int i; 3139 int i;
2159 3140
2160 for (i = 0; i < timercnt; ++i) 3141 for (i = 0; i < timercnt; ++i)
… …
2197 * doesn't hurt either as we only do this on time-jumps or 3178 * doesn't hurt either as we only do this on time-jumps or
2198 * in the unlikely event of having been preempted here. 3179 * in the unlikely event of having been preempted here.
2199 */ 3180 */
2200 for (i = 4; --i; ) 3181 for (i = 4; --i; )
2201 { 3182 {
3183 ev_tstamp diff;
2202 rtmn_diff = ev_rt_now - mn_now; 3184 rtmn_diff = ev_rt_now - mn_now;
2203 3185
3186 diff = odiff - rtmn_diff;
3187
2204 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3188 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2205 return; /* all is well */ 3189 return; /* all is well */
2206 3190
2207 ev_rt_now = ev_time (); 3191 ev_rt_now = ev_time ();
2208 mn_now = get_clock (); 3192 mn_now = get_clock ();
2209 now_floor = mn_now; 3193 now_floor = mn_now;
… …
2231 3215
2232 mn_now = ev_rt_now; 3216 mn_now = ev_rt_now;
2233 } 3217 }
2234} 3218}
2235 3219
2236void 3220int
2237ev_loop (EV_P_ int flags) 3221ev_run (EV_P_ int flags)
2238{ 3222{
2239#if EV_MINIMAL < 2 3223#if EV_FEATURE_API
2240 ++loop_depth; 3224 ++loop_depth;
2241#endif 3225#endif
2242 3226
2243 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3227 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2244 3228
2245 loop_done = EVUNLOOP_CANCEL; 3229 loop_done = EVBREAK_CANCEL;
2246 3230
2247 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3231 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2248 3232
2249 do 3233 do
2250 { 3234 {
2251#if EV_VERIFY >= 2 3235#if EV_VERIFY >= 2
2252 ev_loop_verify (EV_A); 3236 ev_verify (EV_A);
2253#endif 3237#endif
2254 3238
2255#ifndef _WIN32 3239#ifndef _WIN32
2256 if (expect_false (curpid)) /* penalise the forking check even more */ 3240 if (expect_false (curpid)) /* penalise the forking check even more */
2257 if (expect_false (getpid () != curpid)) 3241 if (expect_false (getpid () != curpid))
… …
2269 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3253 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2270 EV_INVOKE_PENDING; 3254 EV_INVOKE_PENDING;
2271 } 3255 }
2272#endif 3256#endif
2273 3257
3258#if EV_PREPARE_ENABLE
2274 /* queue prepare watchers (and execute them) */ 3259 /* queue prepare watchers (and execute them) */
2275 if (expect_false (preparecnt)) 3260 if (expect_false (preparecnt))
2276 { 3261 {
2277 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3262 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2278 EV_INVOKE_PENDING; 3263 EV_INVOKE_PENDING;
2279 } 3264 }
3265#endif
2280 3266
2281 if (expect_false (loop_done)) 3267 if (expect_false (loop_done))
2282 break; 3268 break;
2283 3269
2284 /* we might have forked, so reify kernel state if necessary */ 3270 /* we might have forked, so reify kernel state if necessary */
… …
2291 /* calculate blocking time */ 3277 /* calculate blocking time */
2292 { 3278 {
2293 ev_tstamp waittime = 0.; 3279 ev_tstamp waittime = 0.;
2294 ev_tstamp sleeptime = 0.; 3280 ev_tstamp sleeptime = 0.;
2295 3281
3282 /* remember old timestamp for io_blocktime calculation */
3283 ev_tstamp prev_mn_now = mn_now;
3284
3285 /* update time to cancel out callback processing overhead */
3286 time_update (EV_A_ 1e100);
3287
3288 /* from now on, we want a pipe-wake-up */
3289 pipe_write_wanted = 1;
3290
3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3292
2296 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2297 { 3294 {
2298 /* remember old timestamp for io_blocktime calculation */
2299 ev_tstamp prev_mn_now = mn_now;
2300
2301 /* update time to cancel out callback processing overhead */
2302 time_update (EV_A_ 1e100);
2303
2304 waittime = MAX_BLOCKTIME; 3295 waittime = MAX_BLOCKTIME;
2305 3296
2306 if (timercnt) 3297 if (timercnt)
2307 { 3298 {
2308 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3299 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2309 if (waittime > to) waittime = to; 3300 if (waittime > to) waittime = to;
2310 } 3301 }
2311 3302
2312#if EV_PERIODIC_ENABLE 3303#if EV_PERIODIC_ENABLE
2313 if (periodiccnt) 3304 if (periodiccnt)
2314 { 3305 {
2315 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3306 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2316 if (waittime > to) waittime = to; 3307 if (waittime > to) waittime = to;
2317 } 3308 }
2318#endif 3309#endif
2319 3310
2320 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3311 /* don't let timeouts decrease the waittime below timeout_blocktime */
2321 if (expect_false (waittime < timeout_blocktime)) 3312 if (expect_false (waittime < timeout_blocktime))
2322 waittime = timeout_blocktime; 3313 waittime = timeout_blocktime;
3314
3315 /* at this point, we NEED to wait, so we have to ensure */
3316 /* to pass a minimum nonzero value to the backend */
3317 if (expect_false (waittime < backend_mintime))
3318 waittime = backend_mintime;
2323 3319
2324 /* extra check because io_blocktime is commonly 0 */ 3320 /* extra check because io_blocktime is commonly 0 */
2325 if (expect_false (io_blocktime)) 3321 if (expect_false (io_blocktime))
2326 { 3322 {
2327 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3323 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2328 3324
2329 if (sleeptime > waittime - backend_fudge) 3325 if (sleeptime > waittime - backend_mintime)
2330 sleeptime = waittime - backend_fudge; 3326 sleeptime = waittime - backend_mintime;
2331 3327
2332 if (expect_true (sleeptime > 0.)) 3328 if (expect_true (sleeptime > 0.))
2333 { 3329 {
2334 ev_sleep (sleeptime); 3330 ev_sleep (sleeptime);
2335 waittime -= sleeptime; 3331 waittime -= sleeptime;
2336 } 3332 }
2337 } 3333 }
2338 } 3334 }
2339 3335
2340#if EV_MINIMAL < 2 3336#if EV_FEATURE_API
2341 ++loop_count; 3337 ++loop_count;
2342#endif 3338#endif
2343 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3339 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2344 backend_poll (EV_A_ waittime); 3340 backend_poll (EV_A_ waittime);
2345 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3341 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3342
3343 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3344
3345 ECB_MEMORY_FENCE_ACQUIRE;
3346 if (pipe_write_skipped)
3347 {
3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3350 }
3351
2346 3352
2347 /* update ev_rt_now, do magic */ 3353 /* update ev_rt_now, do magic */
2348 time_update (EV_A_ waittime + sleeptime); 3354 time_update (EV_A_ waittime + sleeptime);
2349 } 3355 }
2350 3356
… …
2357#if EV_IDLE_ENABLE 3363#if EV_IDLE_ENABLE
2358 /* queue idle watchers unless other events are pending */ 3364 /* queue idle watchers unless other events are pending */
2359 idle_reify (EV_A); 3365 idle_reify (EV_A);
2360#endif 3366#endif
2361 3367
3368#if EV_CHECK_ENABLE
2362 /* queue check watchers, to be executed first */ 3369 /* queue check watchers, to be executed first */
2363 if (expect_false (checkcnt)) 3370 if (expect_false (checkcnt))
2364 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3371 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3372#endif
2365 3373
2366 EV_INVOKE_PENDING; 3374 EV_INVOKE_PENDING;
2367 } 3375 }
2368 while (expect_true ( 3376 while (expect_true (
2369 activecnt 3377 activecnt
2370 && !loop_done 3378 && !loop_done
2371 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3379 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2372 )); 3380 ));
2373 3381
2374 if (loop_done == EVUNLOOP_ONE) 3382 if (loop_done == EVBREAK_ONE)
2375 loop_done = EVUNLOOP_CANCEL; 3383 loop_done = EVBREAK_CANCEL;
2376 3384
2377#if EV_MINIMAL < 2 3385#if EV_FEATURE_API
2378 --loop_depth; 3386 --loop_depth;
2379#endif 3387#endif
3388
3389 return activecnt;
2380} 3390}
2381 3391
2382void 3392void
2383ev_unloop (EV_P_ int how) 3393ev_break (EV_P_ int how) EV_THROW
2384{ 3394{
2385 loop_done = how; 3395 loop_done = how;
2386} 3396}
2387 3397
2388void 3398void
2389ev_ref (EV_P) 3399ev_ref (EV_P) EV_THROW
2390{ 3400{
2391 ++activecnt; 3401 ++activecnt;
2392} 3402}
2393 3403
2394void 3404void
2395ev_unref (EV_P) 3405ev_unref (EV_P) EV_THROW
2396{ 3406{
2397 --activecnt; 3407 --activecnt;
2398} 3408}
2399 3409
2400void 3410void
2401ev_now_update (EV_P) 3411ev_now_update (EV_P) EV_THROW
2402{ 3412{
2403 time_update (EV_A_ 1e100); 3413 time_update (EV_A_ 1e100);
2404} 3414}
2405 3415
2406void 3416void
2407ev_suspend (EV_P) 3417ev_suspend (EV_P) EV_THROW
2408{ 3418{
2409 ev_now_update (EV_A); 3419 ev_now_update (EV_A);
2410} 3420}
2411 3421
2412void 3422void
2413ev_resume (EV_P) 3423ev_resume (EV_P) EV_THROW
2414{ 3424{
2415 ev_tstamp mn_prev = mn_now; 3425 ev_tstamp mn_prev = mn_now;
2416 3426
2417 ev_now_update (EV_A); 3427 ev_now_update (EV_A);
2418 timers_reschedule (EV_A_ mn_now - mn_prev); 3428 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2457 w->pending = 0; 3467 w->pending = 0;
2458 } 3468 }
2459} 3469}
2460 3470
2461int 3471int
2462ev_clear_pending (EV_P_ void *w) 3472ev_clear_pending (EV_P_ void *w) EV_THROW
2463{ 3473{
2464 W w_ = (W)w; 3474 W w_ = (W)w;
2465 int pending = w_->pending; 3475 int pending = w_->pending;
2466 3476
2467 if (expect_true (pending)) 3477 if (expect_true (pending))
… …
2500} 3510}
2501 3511
2502/*****************************************************************************/ 3512/*****************************************************************************/
2503 3513
2504void noinline 3514void noinline
2505ev_io_start (EV_P_ ev_io *w) 3515ev_io_start (EV_P_ ev_io *w) EV_THROW
2506{ 3516{
2507 int fd = w->fd; 3517 int fd = w->fd;
2508 3518
2509 if (expect_false (ev_is_active (w))) 3519 if (expect_false (ev_is_active (w)))
2510 return; 3520 return;
… …
2516 3526
2517 ev_start (EV_A_ (W)w, 1); 3527 ev_start (EV_A_ (W)w, 1);
2518 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2519 wlist_add (&anfds[fd].head, (WL)w); 3529 wlist_add (&anfds[fd].head, (WL)w);
2520 3530
3531 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533
2521 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2522 w->events &= ~EV__IOFDSET; 3535 w->events &= ~EV__IOFDSET;
2523 3536
2524 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2525} 3538}
2526 3539
2527void noinline 3540void noinline
2528ev_io_stop (EV_P_ ev_io *w) 3541ev_io_stop (EV_P_ ev_io *w) EV_THROW
2529{ 3542{
2530 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2531 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2532 return; 3545 return;
2533 3546
… …
2536 EV_FREQUENT_CHECK; 3549 EV_FREQUENT_CHECK;
2537 3550
2538 wlist_del (&anfds[w->fd].head, (WL)w); 3551 wlist_del (&anfds[w->fd].head, (WL)w);
2539 ev_stop (EV_A_ (W)w); 3552 ev_stop (EV_A_ (W)w);
2540 3553
2541 fd_change (EV_A_ w->fd, 1); 3554 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2542 3555
2543 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2544} 3557}
2545 3558
2546void noinline 3559void noinline
2547ev_timer_start (EV_P_ ev_timer *w) 3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2548{ 3561{
2549 if (expect_false (ev_is_active (w))) 3562 if (expect_false (ev_is_active (w)))
2550 return; 3563 return;
2551 3564
2552 ev_at (w) += mn_now; 3565 ev_at (w) += mn_now;
… …
2566 3579
2567 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2568} 3581}
2569 3582
2570void noinline 3583void noinline
2571ev_timer_stop (EV_P_ ev_timer *w) 3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2572{ 3585{
2573 clear_pending (EV_A_ (W)w); 3586 clear_pending (EV_A_ (W)w);
2574 if (expect_false (!ev_is_active (w))) 3587 if (expect_false (!ev_is_active (w)))
2575 return; 3588 return;
2576 3589
… …
2588 timers [active] = timers [timercnt + HEAP0]; 3601 timers [active] = timers [timercnt + HEAP0];
2589 adjustheap (timers, timercnt, active); 3602 adjustheap (timers, timercnt, active);
2590 } 3603 }
2591 } 3604 }
2592 3605
2593 EV_FREQUENT_CHECK;
2594
2595 ev_at (w) -= mn_now; 3606 ev_at (w) -= mn_now;
2596 3607
2597 ev_stop (EV_A_ (W)w); 3608 ev_stop (EV_A_ (W)w);
3609
3610 EV_FREQUENT_CHECK;
2598} 3611}
2599 3612
2600void noinline 3613void noinline
2601ev_timer_again (EV_P_ ev_timer *w) 3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2602{ 3615{
2603 EV_FREQUENT_CHECK; 3616 EV_FREQUENT_CHECK;
3617
3618 clear_pending (EV_A_ (W)w);
2604 3619
2605 if (ev_is_active (w)) 3620 if (ev_is_active (w))
2606 { 3621 {
2607 if (w->repeat) 3622 if (w->repeat)
2608 { 3623 {
… …
2621 3636
2622 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2623} 3638}
2624 3639
2625ev_tstamp 3640ev_tstamp
2626ev_timer_remaining (EV_P_ ev_timer *w) 3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2627{ 3642{
2628 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2629} 3644}
2630 3645
2631#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2632void noinline 3647void noinline
2633ev_periodic_start (EV_P_ ev_periodic *w) 3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2634{ 3649{
2635 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2636 return; 3651 return;
2637 3652
2638 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
2639 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2640 else if (w->interval) 3655 else if (w->interval)
2641 { 3656 {
2642 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3657 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2643 /* this formula differs from the one in periodic_reify because we do not always round up */ 3658 periodic_recalc (EV_A_ w);
2644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2645 } 3659 }
2646 else 3660 else
2647 ev_at (w) = w->offset; 3661 ev_at (w) = w->offset;
2648 3662
2649 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
… …
2659 3673
2660 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2661} 3675}
2662 3676
2663void noinline 3677void noinline
2664ev_periodic_stop (EV_P_ ev_periodic *w) 3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2665{ 3679{
2666 clear_pending (EV_A_ (W)w); 3680 clear_pending (EV_A_ (W)w);
2667 if (expect_false (!ev_is_active (w))) 3681 if (expect_false (!ev_is_active (w)))
2668 return; 3682 return;
2669 3683
… …
2681 periodics [active] = periodics [periodiccnt + HEAP0]; 3695 periodics [active] = periodics [periodiccnt + HEAP0];
2682 adjustheap (periodics, periodiccnt, active); 3696 adjustheap (periodics, periodiccnt, active);
2683 } 3697 }
2684 } 3698 }
2685 3699
2686 EV_FREQUENT_CHECK;
2687
2688 ev_stop (EV_A_ (W)w); 3700 ev_stop (EV_A_ (W)w);
3701
3702 EV_FREQUENT_CHECK;
2689} 3703}
2690 3704
2691void noinline 3705void noinline
2692ev_periodic_again (EV_P_ ev_periodic *w) 3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2693{ 3707{
2694 /* TODO: use adjustheap and recalculation */ 3708 /* TODO: use adjustheap and recalculation */
2695 ev_periodic_stop (EV_A_ w); 3709 ev_periodic_stop (EV_A_ w);
2696 ev_periodic_start (EV_A_ w); 3710 ev_periodic_start (EV_A_ w);
2697} 3711}
… …
2699 3713
2700#ifndef SA_RESTART 3714#ifndef SA_RESTART
2701# define SA_RESTART 0 3715# define SA_RESTART 0
2702#endif 3716#endif
2703 3717
3718#if EV_SIGNAL_ENABLE
3719
2704void noinline 3720void noinline
2705ev_signal_start (EV_P_ ev_signal *w) 3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2706{ 3722{
2707 if (expect_false (ev_is_active (w))) 3723 if (expect_false (ev_is_active (w)))
2708 return; 3724 return;
2709 3725
2710 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2712#if EV_MULTIPLICITY 3728#if EV_MULTIPLICITY
2713 assert (("libev: a signal must not be attached to two different loops", 3729 assert (("libev: a signal must not be attached to two different loops",
2714 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3730 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2715 3731
2716 signals [w->signum - 1].loop = EV_A; 3732 signals [w->signum - 1].loop = EV_A;
3733 ECB_MEMORY_FENCE_RELEASE;
2717#endif 3734#endif
2718 3735
2719 EV_FREQUENT_CHECK; 3736 EV_FREQUENT_CHECK;
2720 3737
2721#if EV_USE_SIGNALFD 3738#if EV_USE_SIGNALFD
… …
2768 sa.sa_handler = ev_sighandler; 3785 sa.sa_handler = ev_sighandler;
2769 sigfillset (&sa.sa_mask); 3786 sigfillset (&sa.sa_mask);
2770 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3787 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2771 sigaction (w->signum, &sa, 0); 3788 sigaction (w->signum, &sa, 0);
2772 3789
3790 if (origflags & EVFLAG_NOSIGMASK)
3791 {
2773 sigemptyset (&sa.sa_mask); 3792 sigemptyset (&sa.sa_mask);
2774 sigaddset (&sa.sa_mask, w->signum); 3793 sigaddset (&sa.sa_mask, w->signum);
2775 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3794 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3795 }
2776#endif 3796#endif
2777 } 3797 }
2778 3798
2779 EV_FREQUENT_CHECK; 3799 EV_FREQUENT_CHECK;
2780} 3800}
2781 3801
2782void noinline 3802void noinline
2783ev_signal_stop (EV_P_ ev_signal *w) 3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2784{ 3804{
2785 clear_pending (EV_A_ (W)w); 3805 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w))) 3806 if (expect_false (!ev_is_active (w)))
2787 return; 3807 return;
2788 3808
… …
2814 } 3834 }
2815 3835
2816 EV_FREQUENT_CHECK; 3836 EV_FREQUENT_CHECK;
2817} 3837}
2818 3838
3839#endif
3840
3841#if EV_CHILD_ENABLE
3842
2819void 3843void
2820ev_child_start (EV_P_ ev_child *w) 3844ev_child_start (EV_P_ ev_child *w) EV_THROW
2821{ 3845{
2822#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
2823 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2824#endif 3848#endif
2825 if (expect_false (ev_is_active (w))) 3849 if (expect_false (ev_is_active (w)))
2826 return; 3850 return;
2827 3851
2828 EV_FREQUENT_CHECK; 3852 EV_FREQUENT_CHECK;
2829 3853
2830 ev_start (EV_A_ (W)w, 1); 3854 ev_start (EV_A_ (W)w, 1);
2831 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3855 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2832 3856
2833 EV_FREQUENT_CHECK; 3857 EV_FREQUENT_CHECK;
2834} 3858}
2835 3859
2836void 3860void
2837ev_child_stop (EV_P_ ev_child *w) 3861ev_child_stop (EV_P_ ev_child *w) EV_THROW
2838{ 3862{
2839 clear_pending (EV_A_ (W)w); 3863 clear_pending (EV_A_ (W)w);
2840 if (expect_false (!ev_is_active (w))) 3864 if (expect_false (!ev_is_active (w)))
2841 return; 3865 return;
2842 3866
2843 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2844 3868
2845 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3869 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2846 ev_stop (EV_A_ (W)w); 3870 ev_stop (EV_A_ (W)w);
2847 3871
2848 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
2849} 3873}
3874
3875#endif
2850 3876
2851#if EV_STAT_ENABLE 3877#if EV_STAT_ENABLE
2852 3878
2853# ifdef _WIN32 3879# ifdef _WIN32
2854# undef lstat 3880# undef lstat
… …
2915 if (!pend || pend == path) 3941 if (!pend || pend == path)
2916 break; 3942 break;
2917 3943
2918 *pend = 0; 3944 *pend = 0;
2919 w->wd = inotify_add_watch (fs_fd, path, mask); 3945 w->wd = inotify_add_watch (fs_fd, path, mask);
2920 } 3946 }
2921 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3947 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2922 } 3948 }
2923 } 3949 }
2924 3950
2925 if (w->wd >= 0) 3951 if (w->wd >= 0)
2926 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3952 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2927 3953
2928 /* now re-arm timer, if required */ 3954 /* now re-arm timer, if required */
2929 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3955 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2930 ev_timer_again (EV_A_ &w->timer); 3956 ev_timer_again (EV_A_ &w->timer);
2931 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3957 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2939 3965
2940 if (wd < 0) 3966 if (wd < 0)
2941 return; 3967 return;
2942 3968
2943 w->wd = -2; 3969 w->wd = -2;
2944 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3970 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2945 wlist_del (&fs_hash [slot].head, (WL)w); 3971 wlist_del (&fs_hash [slot].head, (WL)w);
2946 3972
2947 /* remove this watcher, if others are watching it, they will rearm */ 3973 /* remove this watcher, if others are watching it, they will rearm */
2948 inotify_rm_watch (fs_fd, wd); 3974 inotify_rm_watch (fs_fd, wd);
2949} 3975}
… …
2951static void noinline 3977static void noinline
2952infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3978infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2953{ 3979{
2954 if (slot < 0) 3980 if (slot < 0)
2955 /* overflow, need to check for all hash slots */ 3981 /* overflow, need to check for all hash slots */
2956 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3982 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2957 infy_wd (EV_A_ slot, wd, ev); 3983 infy_wd (EV_A_ slot, wd, ev);
2958 else 3984 else
2959 { 3985 {
2960 WL w_; 3986 WL w_;
2961 3987
2962 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3988 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2963 { 3989 {
2964 ev_stat *w = (ev_stat *)w_; 3990 ev_stat *w = (ev_stat *)w_;
2965 w_ = w_->next; /* lets us remove this watcher and all before it */ 3991 w_ = w_->next; /* lets us remove this watcher and all before it */
2966 3992
2967 if (w->wd == wd || wd == -1) 3993 if (w->wd == wd || wd == -1)
2968 { 3994 {
2969 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3995 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2970 { 3996 {
2971 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3997 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2972 w->wd = -1; 3998 w->wd = -1;
2973 infy_add (EV_A_ w); /* re-add, no matter what */ 3999 infy_add (EV_A_ w); /* re-add, no matter what */
2974 } 4000 }
2975 4001
2976 stat_timer_cb (EV_A_ &w->timer, 0); 4002 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2992 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4018 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2993 ofs += sizeof (struct inotify_event) + ev->len; 4019 ofs += sizeof (struct inotify_event) + ev->len;
2994 } 4020 }
2995} 4021}
2996 4022
2997inline_size void 4023inline_size void ecb_cold
2998check_2625 (EV_P) 4024ev_check_2625 (EV_P)
2999{ 4025{
3000 /* kernels < 2.6.25 are borked 4026 /* kernels < 2.6.25 are borked
3001 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4027 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3002 */ 4028 */
3003 struct utsname buf; 4029 if (ev_linux_version () < 0x020619)
3004 int major, minor, micro;
3005
3006 if (uname (&buf))
3007 return;
3008
3009 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3010 return;
3011
3012 if (major < 2
3013 || (major == 2 && minor < 6)
3014 || (major == 2 && minor == 6 && micro < 25))
3015 return; 4030 return;
3016 4031
3017 fs_2625 = 1; 4032 fs_2625 = 1;
3018} 4033}
3019 4034
3020inline_size int 4035inline_size int
3021infy_newfd (void) 4036infy_newfd (void)
3022{ 4037{
3023#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4038#if defined IN_CLOEXEC && defined IN_NONBLOCK
3024 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4039 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3025 if (fd >= 0) 4040 if (fd >= 0)
3026 return fd; 4041 return fd;
3027#endif 4042#endif
3028 return inotify_init (); 4043 return inotify_init ();
… …
3034 if (fs_fd != -2) 4049 if (fs_fd != -2)
3035 return; 4050 return;
3036 4051
3037 fs_fd = -1; 4052 fs_fd = -1;
3038 4053
3039 check_2625 (EV_A); 4054 ev_check_2625 (EV_A);
3040 4055
3041 fs_fd = infy_newfd (); 4056 fs_fd = infy_newfd ();
3042 4057
3043 if (fs_fd >= 0) 4058 if (fs_fd >= 0)
3044 { 4059 {
… …
3069 ev_io_set (&fs_w, fs_fd, EV_READ); 4084 ev_io_set (&fs_w, fs_fd, EV_READ);
3070 ev_io_start (EV_A_ &fs_w); 4085 ev_io_start (EV_A_ &fs_w);
3071 ev_unref (EV_A); 4086 ev_unref (EV_A);
3072 } 4087 }
3073 4088
3074 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4089 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3075 { 4090 {
3076 WL w_ = fs_hash [slot].head; 4091 WL w_ = fs_hash [slot].head;
3077 fs_hash [slot].head = 0; 4092 fs_hash [slot].head = 0;
3078 4093
3079 while (w_) 4094 while (w_)
… …
3103#else 4118#else
3104# define EV_LSTAT(p,b) lstat (p, b) 4119# define EV_LSTAT(p,b) lstat (p, b)
3105#endif 4120#endif
3106 4121
3107void 4122void
3108ev_stat_stat (EV_P_ ev_stat *w) 4123ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3109{ 4124{
3110 if (lstat (w->path, &w->attr) < 0) 4125 if (lstat (w->path, &w->attr) < 0)
3111 w->attr.st_nlink = 0; 4126 w->attr.st_nlink = 0;
3112 else if (!w->attr.st_nlink) 4127 else if (!w->attr.st_nlink)
3113 w->attr.st_nlink = 1; 4128 w->attr.st_nlink = 1;
… …
3152 ev_feed_event (EV_A_ w, EV_STAT); 4167 ev_feed_event (EV_A_ w, EV_STAT);
3153 } 4168 }
3154} 4169}
3155 4170
3156void 4171void
3157ev_stat_start (EV_P_ ev_stat *w) 4172ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3158{ 4173{
3159 if (expect_false (ev_is_active (w))) 4174 if (expect_false (ev_is_active (w)))
3160 return; 4175 return;
3161 4176
3162 ev_stat_stat (EV_A_ w); 4177 ev_stat_stat (EV_A_ w);
… …
3183 4198
3184 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
3185} 4200}
3186 4201
3187void 4202void
3188ev_stat_stop (EV_P_ ev_stat *w) 4203ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3189{ 4204{
3190 clear_pending (EV_A_ (W)w); 4205 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 4206 if (expect_false (!ev_is_active (w)))
3192 return; 4207 return;
3193 4208
… …
3209} 4224}
3210#endif 4225#endif
3211 4226
3212#if EV_IDLE_ENABLE 4227#if EV_IDLE_ENABLE
3213void 4228void
3214ev_idle_start (EV_P_ ev_idle *w) 4229ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3215{ 4230{
3216 if (expect_false (ev_is_active (w))) 4231 if (expect_false (ev_is_active (w)))
3217 return; 4232 return;
3218 4233
3219 pri_adjust (EV_A_ (W)w); 4234 pri_adjust (EV_A_ (W)w);
… …
3232 4247
3233 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3234} 4249}
3235 4250
3236void 4251void
3237ev_idle_stop (EV_P_ ev_idle *w) 4252ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3238{ 4253{
3239 clear_pending (EV_A_ (W)w); 4254 clear_pending (EV_A_ (W)w);
3240 if (expect_false (!ev_is_active (w))) 4255 if (expect_false (!ev_is_active (w)))
3241 return; 4256 return;
3242 4257
… …
3254 4269
3255 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
3256} 4271}
3257#endif 4272#endif
3258 4273
4274#if EV_PREPARE_ENABLE
3259void 4275void
3260ev_prepare_start (EV_P_ ev_prepare *w) 4276ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3261{ 4277{
3262 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
3263 return; 4279 return;
3264 4280
3265 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
… …
3270 4286
3271 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
3272} 4288}
3273 4289
3274void 4290void
3275ev_prepare_stop (EV_P_ ev_prepare *w) 4291ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3276{ 4292{
3277 clear_pending (EV_A_ (W)w); 4293 clear_pending (EV_A_ (W)w);
3278 if (expect_false (!ev_is_active (w))) 4294 if (expect_false (!ev_is_active (w)))
3279 return; 4295 return;
3280 4296
… …
3289 4305
3290 ev_stop (EV_A_ (W)w); 4306 ev_stop (EV_A_ (W)w);
3291 4307
3292 EV_FREQUENT_CHECK; 4308 EV_FREQUENT_CHECK;
3293} 4309}
4310#endif
3294 4311
4312#if EV_CHECK_ENABLE
3295void 4313void
3296ev_check_start (EV_P_ ev_check *w) 4314ev_check_start (EV_P_ ev_check *w) EV_THROW
3297{ 4315{
3298 if (expect_false (ev_is_active (w))) 4316 if (expect_false (ev_is_active (w)))
3299 return; 4317 return;
3300 4318
3301 EV_FREQUENT_CHECK; 4319 EV_FREQUENT_CHECK;
… …
3306 4324
3307 EV_FREQUENT_CHECK; 4325 EV_FREQUENT_CHECK;
3308} 4326}
3309 4327
3310void 4328void
3311ev_check_stop (EV_P_ ev_check *w) 4329ev_check_stop (EV_P_ ev_check *w) EV_THROW
3312{ 4330{
3313 clear_pending (EV_A_ (W)w); 4331 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 4332 if (expect_false (!ev_is_active (w)))
3315 return; 4333 return;
3316 4334
… …
3325 4343
3326 ev_stop (EV_A_ (W)w); 4344 ev_stop (EV_A_ (W)w);
3327 4345
3328 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3329} 4347}
4348#endif
3330 4349
3331#if EV_EMBED_ENABLE 4350#if EV_EMBED_ENABLE
3332void noinline 4351void noinline
3333ev_embed_sweep (EV_P_ ev_embed *w) 4352ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3334{ 4353{
3335 ev_loop (w->other, EVLOOP_NONBLOCK); 4354 ev_run (w->other, EVRUN_NOWAIT);
3336} 4355}
3337 4356
3338static void 4357static void
3339embed_io_cb (EV_P_ ev_io *io, int revents) 4358embed_io_cb (EV_P_ ev_io *io, int revents)
3340{ 4359{
3341 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4360 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3342 4361
3343 if (ev_cb (w)) 4362 if (ev_cb (w))
3344 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4363 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3345 else 4364 else
3346 ev_loop (w->other, EVLOOP_NONBLOCK); 4365 ev_run (w->other, EVRUN_NOWAIT);
3347} 4366}
3348 4367
3349static void 4368static void
3350embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4369embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3351{ 4370{
… …
3355 EV_P = w->other; 4374 EV_P = w->other;
3356 4375
3357 while (fdchangecnt) 4376 while (fdchangecnt)
3358 { 4377 {
3359 fd_reify (EV_A); 4378 fd_reify (EV_A);
3360 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4379 ev_run (EV_A_ EVRUN_NOWAIT);
3361 } 4380 }
3362 } 4381 }
3363} 4382}
3364 4383
3365static void 4384static void
… …
3371 4390
3372 { 4391 {
3373 EV_P = w->other; 4392 EV_P = w->other;
3374 4393
3375 ev_loop_fork (EV_A); 4394 ev_loop_fork (EV_A);
3376 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4395 ev_run (EV_A_ EVRUN_NOWAIT);
3377 } 4396 }
3378 4397
3379 ev_embed_start (EV_A_ w); 4398 ev_embed_start (EV_A_ w);
3380} 4399}
3381 4400
… …
3386 ev_idle_stop (EV_A_ idle); 4405 ev_idle_stop (EV_A_ idle);
3387} 4406}
3388#endif 4407#endif
3389 4408
3390void 4409void
3391ev_embed_start (EV_P_ ev_embed *w) 4410ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3392{ 4411{
3393 if (expect_false (ev_is_active (w))) 4412 if (expect_false (ev_is_active (w)))
3394 return; 4413 return;
3395 4414
3396 { 4415 {
… …
3417 4436
3418 EV_FREQUENT_CHECK; 4437 EV_FREQUENT_CHECK;
3419} 4438}
3420 4439
3421void 4440void
3422ev_embed_stop (EV_P_ ev_embed *w) 4441ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3423{ 4442{
3424 clear_pending (EV_A_ (W)w); 4443 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 4444 if (expect_false (!ev_is_active (w)))
3426 return; 4445 return;
3427 4446
… …
3429 4448
3430 ev_io_stop (EV_A_ &w->io); 4449 ev_io_stop (EV_A_ &w->io);
3431 ev_prepare_stop (EV_A_ &w->prepare); 4450 ev_prepare_stop (EV_A_ &w->prepare);
3432 ev_fork_stop (EV_A_ &w->fork); 4451 ev_fork_stop (EV_A_ &w->fork);
3433 4452
4453 ev_stop (EV_A_ (W)w);
4454
3434 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
3435} 4456}
3436#endif 4457#endif
3437 4458
3438#if EV_FORK_ENABLE 4459#if EV_FORK_ENABLE
3439void 4460void
3440ev_fork_start (EV_P_ ev_fork *w) 4461ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3441{ 4462{
3442 if (expect_false (ev_is_active (w))) 4463 if (expect_false (ev_is_active (w)))
3443 return; 4464 return;
3444 4465
3445 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
… …
3450 4471
3451 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3452} 4473}
3453 4474
3454void 4475void
3455ev_fork_stop (EV_P_ ev_fork *w) 4476ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3456{ 4477{
3457 clear_pending (EV_A_ (W)w); 4478 clear_pending (EV_A_ (W)w);
3458 if (expect_false (!ev_is_active (w))) 4479 if (expect_false (!ev_is_active (w)))
3459 return; 4480 return;
3460 4481
… …
3471 4492
3472 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
3473} 4494}
3474#endif 4495#endif
3475 4496
4497#if EV_CLEANUP_ENABLE
4498void
4499ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4500{
4501 if (expect_false (ev_is_active (w)))
4502 return;
4503
4504 EV_FREQUENT_CHECK;
4505
4506 ev_start (EV_A_ (W)w, ++cleanupcnt);
4507 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4508 cleanups [cleanupcnt - 1] = w;
4509
4510 /* cleanup watchers should never keep a refcount on the loop */
4511 ev_unref (EV_A);
4512 EV_FREQUENT_CHECK;
4513}
4514
4515void
4516ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4517{
4518 clear_pending (EV_A_ (W)w);
4519 if (expect_false (!ev_is_active (w)))
4520 return;
4521
4522 EV_FREQUENT_CHECK;
4523 ev_ref (EV_A);
4524
4525 {
4526 int active = ev_active (w);
4527
4528 cleanups [active - 1] = cleanups [--cleanupcnt];
4529 ev_active (cleanups [active - 1]) = active;
4530 }
4531
4532 ev_stop (EV_A_ (W)w);
4533
4534 EV_FREQUENT_CHECK;
4535}
4536#endif
4537
3476#if EV_ASYNC_ENABLE 4538#if EV_ASYNC_ENABLE
3477void 4539void
3478ev_async_start (EV_P_ ev_async *w) 4540ev_async_start (EV_P_ ev_async *w) EV_THROW
3479{ 4541{
3480 if (expect_false (ev_is_active (w))) 4542 if (expect_false (ev_is_active (w)))
3481 return; 4543 return;
4544
4545 w->sent = 0;
3482 4546
3483 evpipe_init (EV_A); 4547 evpipe_init (EV_A);
3484 4548
3485 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
3486 4550
… …
3490 4554
3491 EV_FREQUENT_CHECK; 4555 EV_FREQUENT_CHECK;
3492} 4556}
3493 4557
3494void 4558void
3495ev_async_stop (EV_P_ ev_async *w) 4559ev_async_stop (EV_P_ ev_async *w) EV_THROW
3496{ 4560{
3497 clear_pending (EV_A_ (W)w); 4561 clear_pending (EV_A_ (W)w);
3498 if (expect_false (!ev_is_active (w))) 4562 if (expect_false (!ev_is_active (w)))
3499 return; 4563 return;
3500 4564
… …
3511 4575
3512 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
3513} 4577}
3514 4578
3515void 4579void
3516ev_async_send (EV_P_ ev_async *w) 4580ev_async_send (EV_P_ ev_async *w) EV_THROW
3517{ 4581{
3518 w->sent = 1; 4582 w->sent = 1;
3519 evpipe_write (EV_A_ &async_pending); 4583 evpipe_write (EV_A_ &async_pending);
3520} 4584}
3521#endif 4585#endif
… …
3558 4622
3559 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4623 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3560} 4624}
3561 4625
3562void 4626void
3563ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4627ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3564{ 4628{
3565 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4629 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3566 4630
3567 if (expect_false (!once)) 4631 if (expect_false (!once))
3568 { 4632 {
3569 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4633 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3570 return; 4634 return;
3571 } 4635 }
3572 4636
3573 once->cb = cb; 4637 once->cb = cb;
3574 once->arg = arg; 4638 once->arg = arg;
… …
3589} 4653}
3590 4654
3591/*****************************************************************************/ 4655/*****************************************************************************/
3592 4656
3593#if EV_WALK_ENABLE 4657#if EV_WALK_ENABLE
3594void 4658void ecb_cold
3595ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4659ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3596{ 4660{
3597 int i, j; 4661 int i, j;
3598 ev_watcher_list *wl, *wn; 4662 ev_watcher_list *wl, *wn;
3599 4663
3600 if (types & (EV_IO | EV_EMBED)) 4664 if (types & (EV_IO | EV_EMBED))
… …
3643 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4707 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3644#endif 4708#endif
3645 4709
3646#if EV_IDLE_ENABLE 4710#if EV_IDLE_ENABLE
3647 if (types & EV_IDLE) 4711 if (types & EV_IDLE)
3648 for (j = NUMPRI; i--; ) 4712 for (j = NUMPRI; j--; )
3649 for (i = idlecnt [j]; i--; ) 4713 for (i = idlecnt [j]; i--; )
3650 cb (EV_A_ EV_IDLE, idles [j][i]); 4714 cb (EV_A_ EV_IDLE, idles [j][i]);
3651#endif 4715#endif
3652 4716
3653#if EV_FORK_ENABLE 4717#if EV_FORK_ENABLE
… …
3661 if (types & EV_ASYNC) 4725 if (types & EV_ASYNC)
3662 for (i = asynccnt; i--; ) 4726 for (i = asynccnt; i--; )
3663 cb (EV_A_ EV_ASYNC, asyncs [i]); 4727 cb (EV_A_ EV_ASYNC, asyncs [i]);
3664#endif 4728#endif
3665 4729
4730#if EV_PREPARE_ENABLE
3666 if (types & EV_PREPARE) 4731 if (types & EV_PREPARE)
3667 for (i = preparecnt; i--; ) 4732 for (i = preparecnt; i--; )
3668#if EV_EMBED_ENABLE 4733# if EV_EMBED_ENABLE
3669 if (ev_cb (prepares [i]) != embed_prepare_cb) 4734 if (ev_cb (prepares [i]) != embed_prepare_cb)
3670#endif 4735# endif
3671 cb (EV_A_ EV_PREPARE, prepares [i]); 4736 cb (EV_A_ EV_PREPARE, prepares [i]);
4737#endif
3672 4738
4739#if EV_CHECK_ENABLE
3673 if (types & EV_CHECK) 4740 if (types & EV_CHECK)
3674 for (i = checkcnt; i--; ) 4741 for (i = checkcnt; i--; )
3675 cb (EV_A_ EV_CHECK, checks [i]); 4742 cb (EV_A_ EV_CHECK, checks [i]);
4743#endif
3676 4744
4745#if EV_SIGNAL_ENABLE
3677 if (types & EV_SIGNAL) 4746 if (types & EV_SIGNAL)
3678 for (i = 0; i < EV_NSIG - 1; ++i) 4747 for (i = 0; i < EV_NSIG - 1; ++i)
3679 for (wl = signals [i].head; wl; ) 4748 for (wl = signals [i].head; wl; )
3680 { 4749 {
3681 wn = wl->next; 4750 wn = wl->next;
3682 cb (EV_A_ EV_SIGNAL, wl); 4751 cb (EV_A_ EV_SIGNAL, wl);
3683 wl = wn; 4752 wl = wn;
3684 } 4753 }
4754#endif
3685 4755
4756#if EV_CHILD_ENABLE
3686 if (types & EV_CHILD) 4757 if (types & EV_CHILD)
3687 for (i = EV_PID_HASHSIZE; i--; ) 4758 for (i = (EV_PID_HASHSIZE); i--; )
3688 for (wl = childs [i]; wl; ) 4759 for (wl = childs [i]; wl; )
3689 { 4760 {
3690 wn = wl->next; 4761 wn = wl->next;
3691 cb (EV_A_ EV_CHILD, wl); 4762 cb (EV_A_ EV_CHILD, wl);
3692 wl = wn; 4763 wl = wn;
3693 } 4764 }
4765#endif
3694/* EV_STAT 0x00001000 /* stat data changed */ 4766/* EV_STAT 0x00001000 /* stat data changed */
3695/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4767/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3696} 4768}
3697#endif 4769#endif
3698 4770
3699#if EV_MULTIPLICITY 4771#if EV_MULTIPLICITY
3700 #include "ev_wrap.h" 4772 #include "ev_wrap.h"
3701#endif 4773#endif
3702 4774
3703#ifdef __cplusplus
3704}
3705#endif
3706

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