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Comparing libev/ev.c (file contents):
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC vs.
Revision 1.444 by root, Fri Jun 1 22:01:13 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 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
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# 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
175#endif 197#endif
176 198
177#ifndef _WIN32 199#ifndef _WIN32
178# include <sys/time.h> 200# include <sys/time.h>
179# include <sys/wait.h> 201# include <sys/wait.h>
180# include <unistd.h> 202# include <unistd.h>
181#else 203#else
182# include <io.h> 204# include <io.h>
183# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
184# include <windows.h> 207# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
187# endif 210# endif
211# undef EV_AVOID_STDIO
188#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
189 221
190/* 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 */
191 223
192/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
215/* 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! :) */
216# define EV_NSIG 65 249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
217#endif 254#endif
218 255
219#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 259# else
223# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
224# endif 261# endif
225#endif 262#endif
226 263
227#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 267# else
231# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
232# endif 269# endif
233#endif 270#endif
234 271
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 274#endif
238 275
239#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 279# else
243# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
244# endif 281# endif
245#endif 282#endif
246 283
247#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 286#endif
250 287
251#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
252# ifdef _WIN32 289# ifdef _WIN32
253# define EV_USE_POLL 0 290# define EV_USE_POLL 0
254# else 291# else
255# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 293# endif
257#endif 294#endif
258 295
259#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 299# else
263# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
264# endif 301# endif
265#endif 302#endif
266 303
… …
272# define EV_USE_PORT 0 309# define EV_USE_PORT 0
273#endif 310#endif
274 311
275#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 315# else
279# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
280# endif 317# endif
281#endif 318#endif
282 319
283#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 322#endif
290 323
291#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 326#endif
298 327
299#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 331# else
303# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
304# endif 333# endif
305#endif 334#endif
306 335
307#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 339# else
311# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
312# endif 341# endif
313#endif 342#endif
314 343
… …
317# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
319#endif 348#endif
320 349
321#ifndef EV_VERIFY 350#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 352#endif
324 353
325#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 356#endif
328 357
329#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 360#endif
332 361
333/* 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, */
334/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 365# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
341# else 370# else
… …
366# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
367# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
368#endif 397#endif
369 398
370#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
371# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
372# include <sys/select.h> 402# include <sys/select.h>
373# endif 403# endif
374#endif 404#endif
375 405
376#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
377# include <sys/utsname.h>
378# include <sys/statfs.h> 407# include <sys/statfs.h>
379# include <sys/inotify.h> 408# include <sys/inotify.h>
380/* 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 */
381# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
382# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
383# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
384# endif 413# endif
385#endif
386
387#if EV_SELECT_IS_WINSOCKET
388# include <winsock.h>
389#endif 414#endif
390 415
391#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
392/* 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 */
393# include <stdint.h> 418# include <stdint.h>
… …
399# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
400# else 425# else
401# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
402# endif 427# endif
403# endif 428# endif
404# ifdef __cplusplus
405extern "C" {
406# endif
407int eventfd (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
408# ifdef __cplusplus
409}
410# endif
411#endif 430#endif
412 431
413#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
414/* 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 */
415# include <stdint.h> 434# include <stdint.h>
… …
421# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
422# else 441# else
423# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
424# endif 443# endif
425# endif 444# endif
426# ifdef __cplusplus
427extern "C" {
428# endif
429int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430 446
431struct signalfd_siginfo 447struct signalfd_siginfo
432{ 448{
433 uint32_t ssi_signo; 449 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
435}; 451};
436# ifdef __cplusplus
437}
438# endif 452#endif
439#endif
440
441 453
442/**/ 454/**/
443 455
444#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
445# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
446#else 458#else
447# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
448#endif 460#endif
449 461
450/* 462/*
451 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
452 * It is added to ev_rt_now when scheduling periodics
453 * to ensure progress, time-wise, even when rounding
454 * errors are against us.
455 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
456 * Better solutions welcome.
457 */ 465 */
458#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 */
459 468
460#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) */
461#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) */
462 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 519 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
465# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
466#else 536#else
467# define expect(expr,value) (expr) 537 #include <inttypes.h>
468# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
470# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
471# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
472#endif 557 #endif
558#endif
473 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
476#define inline_size static inline 1013#define inline_size ecb_inline
477 1014
478#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
479# define inline_speed static noinline 1018# define inline_speed static noinline
480#else
481# define inline_speed static inline
482#endif 1019#endif
483 1020
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1022
486#if EV_MINPRI == EV_MAXPRI 1023#if EV_MINPRI == EV_MAXPRI
… …
499#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
500#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
501 1038
502#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
503/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* sig_atomic_t is used to avoid per-thread variables or locking but still */
504/* giving it a reasonably high chance of working on typical architetcures */ 1041/* giving it a reasonably high chance of working on typical architectures */
505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
506#endif 1043#endif
507 1044
508#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
523# include "ev_win32.c" 1060# include "ev_win32.c"
524#endif 1061#endif
525 1062
526/*****************************************************************************/ 1063/*****************************************************************************/
527 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
1155#if EV_AVOID_STDIO
1156static void noinline ecb_cold
1157ev_printerr (const char *msg)
1158{
1159 write (STDERR_FILENO, msg, strlen (msg));
1160}
1161#endif
1162
528static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
529 1164
530void 1165void ecb_cold
531ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
532{ 1167{
533 syserr_cb = cb; 1168 syserr_cb = cb;
534} 1169}
535 1170
536static void noinline 1171static void noinline ecb_cold
537ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
538{ 1173{
539 if (!msg) 1174 if (!msg)
540 msg = "(libev) system error"; 1175 msg = "(libev) system error";
541 1176
542 if (syserr_cb) 1177 if (syserr_cb)
543 syserr_cb (msg); 1178 syserr_cb (msg);
544 else 1179 else
545 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
546 perror (msg); 1187 perror (msg);
1188#endif
547 abort (); 1189 abort ();
548 } 1190 }
549} 1191}
550 1192
551static void * 1193static void *
552ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
553{ 1195{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
554 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
555 * implement realloc (x, 0) (as required by both ansi c-98 and 1200 * implement realloc (x, 0) (as required by both ansi c-89 and
556 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
557 */ 1202 */
558 1203
559 if (size) 1204 if (size)
560 return realloc (ptr, size); 1205 return realloc (ptr, size);
561 1206
562 free (ptr); 1207 free (ptr);
563 return 0; 1208 return 0;
1209#endif
564} 1210}
565 1211
566static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
567 1213
568void 1214void ecb_cold
569ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
570{ 1216{
571 alloc = cb; 1217 alloc = cb;
572} 1218}
573 1219
574inline_speed void * 1220inline_speed void *
… …
576{ 1222{
577 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
578 1224
579 if (!ptr && size) 1225 if (!ptr && size)
580 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
581 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
582 abort (); 1232 abort ();
583 } 1233 }
584 1234
585 return ptr; 1235 return ptr;
586} 1236}
… …
602 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
603 unsigned char unused; 1253 unsigned char unused;
604#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
605 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
606#endif 1256#endif
607#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
608 SOCKET handle; 1258 SOCKET handle;
1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
609#endif 1262#endif
610} ANFD; 1263} ANFD;
611 1264
612/* stores the pending event set for a given watcher */ 1265/* stores the pending event set for a given watcher */
613typedef struct 1266typedef struct
… …
655 #undef VAR 1308 #undef VAR
656 }; 1309 };
657 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
658 1311
659 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
660 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
661 1314
662#else 1315#else
663 1316
664 ev_tstamp ev_rt_now; 1317 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
665 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
666 #include "ev_vars.h" 1319 #include "ev_vars.h"
667 #undef VAR 1320 #undef VAR
668 1321
669 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
670 1323
671#endif 1324#endif
672 1325
673#if EV_MINIMAL < 2 1326#if EV_FEATURE_API
674# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1327# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
675# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
676# define EV_INVOKE_PENDING invoke_cb (EV_A) 1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
677#else 1330#else
678# define EV_RELEASE_CB (void)0 1331# define EV_RELEASE_CB (void)0
679# define EV_ACQUIRE_CB (void)0 1332# define EV_ACQUIRE_CB (void)0
680# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
681#endif 1334#endif
682 1335
683#define EVUNLOOP_RECURSE 0x80 1336#define EVBREAK_RECURSE 0x80
684 1337
685/*****************************************************************************/ 1338/*****************************************************************************/
686 1339
687#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
688ev_tstamp 1341ev_tstamp
689ev_time (void) 1342ev_time (void) EV_THROW
690{ 1343{
691#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
692 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
693 { 1346 {
694 struct timespec ts; 1347 struct timespec ts;
… …
718 return ev_time (); 1371 return ev_time ();
719} 1372}
720 1373
721#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
722ev_tstamp 1375ev_tstamp
723ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
724{ 1377{
725 return ev_rt_now; 1378 return ev_rt_now;
726} 1379}
727#endif 1380#endif
728 1381
729void 1382void
730ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
731{ 1384{
732 if (delay > 0.) 1385 if (delay > 0.)
733 { 1386 {
734#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
735 struct timespec ts; 1388 struct timespec ts;
736 1389
737 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
738 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
739
740 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
741#elif defined(_WIN32) 1392#elif defined _WIN32
742 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
743#else 1394#else
744 struct timeval tv; 1395 struct timeval tv;
745 1396
746 tv.tv_sec = (time_t)delay;
747 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
748
749 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
750 /* something not guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
751 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
752 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
753#endif 1402#endif
754 } 1403 }
755} 1404}
756 1405
757/*****************************************************************************/ 1406/*****************************************************************************/
758 1407
759#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
760 1409
761/* find a suitable new size for the given array, */ 1410/* find a suitable new size for the given array, */
762/* hopefully by rounding to a ncie-to-malloc size */ 1411/* hopefully by rounding to a nice-to-malloc size */
763inline_size int 1412inline_size int
764array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
765{ 1414{
766 int ncur = cur + 1; 1415 int ncur = cur + 1;
767 1416
768 do 1417 do
769 ncur <<= 1; 1418 ncur <<= 1;
770 while (cnt > ncur); 1419 while (cnt > ncur);
771 1420
772 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
773 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
774 { 1423 {
775 ncur *= elem; 1424 ncur *= elem;
776 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
777 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
779 } 1428 }
780 1429
781 return ncur; 1430 return ncur;
782} 1431}
783 1432
784static noinline void * 1433static void * noinline ecb_cold
785array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
786{ 1435{
787 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
788 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
789} 1438}
… …
792 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
793 1442
794#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
795 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
796 { \ 1445 { \
797 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
798 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
799 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
800 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
801 } 1450 }
802 1451
… …
820pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
821{ 1470{
822} 1471}
823 1472
824void noinline 1473void noinline
825ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
826{ 1475{
827 W w_ = (W)w; 1476 W w_ = (W)w;
828 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
829 1478
830 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
834 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
835 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
836 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
837 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
838 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
839} 1490}
840 1491
841inline_speed void 1492inline_speed void
842feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
843{ 1494{
… …
863} 1514}
864 1515
865/*****************************************************************************/ 1516/*****************************************************************************/
866 1517
867inline_speed void 1518inline_speed void
868fd_event_nc (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
869{ 1520{
870 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
871 ev_io *w; 1522 ev_io *w;
872 1523
873 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1524 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
885fd_event (EV_P_ int fd, int revents) 1536fd_event (EV_P_ int fd, int revents)
886{ 1537{
887 ANFD *anfd = anfds + fd; 1538 ANFD *anfd = anfds + fd;
888 1539
889 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
890 fd_event_nc (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
891} 1542}
892 1543
893void 1544void
894ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
895{ 1546{
896 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
897 fd_event_nc (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
898} 1549}
899 1550
900/* make sure the external fd watch events are in-sync */ 1551/* make sure the external fd watch events are in-sync */
901/* with the kernel/libev internal state */ 1552/* with the kernel/libev internal state */
902inline_size void 1553inline_size void
903fd_reify (EV_P) 1554fd_reify (EV_P)
904{ 1555{
905 int i; 1556 int i;
906 1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
1582
907 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
908 { 1584 {
909 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
910 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
911 ev_io *w; 1587 ev_io *w;
912 1588
913 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
914 1591
915 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
916 events |= (unsigned char)w->events;
917 1593
918#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
919 if (events)
920 { 1595 {
921 unsigned long arg; 1596 anfd->events = 0;
922 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1597
923 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1599 anfd->events |= (unsigned char)w->events;
1600
1601 if (o_events != anfd->events)
1602 o_reify = EV__IOFDSET; /* actually |= */
924 } 1603 }
925#endif
926 1604
927 { 1605 if (o_reify & EV__IOFDSET)
928 unsigned char o_events = anfd->events;
929 unsigned char o_reify = anfd->reify;
930
931 anfd->reify = 0;
932 anfd->events = events;
933
934 if (o_events != events || o_reify & EV__IOFDSET)
935 backend_modify (EV_A_ fd, o_events, events); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
936 }
937 } 1607 }
938 1608
939 fdchangecnt = 0; 1609 fdchangecnt = 0;
940} 1610}
941 1611
… …
953 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
954 } 1624 }
955} 1625}
956 1626
957/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
958inline_speed void 1628inline_speed void ecb_cold
959fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
960{ 1630{
961 ev_io *w; 1631 ev_io *w;
962 1632
963 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
965 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
966 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
967 } 1637 }
968} 1638}
969 1639
970/* check whether the given fd is atcually valid, for error recovery */ 1640/* check whether the given fd is actually valid, for error recovery */
971inline_size int 1641inline_size int ecb_cold
972fd_valid (int fd) 1642fd_valid (int fd)
973{ 1643{
974#ifdef _WIN32 1644#ifdef _WIN32
975 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
976#else 1646#else
977 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
978#endif 1648#endif
979} 1649}
980 1650
981/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
982static void noinline 1652static void noinline ecb_cold
983fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
984{ 1654{
985 int fd; 1655 int fd;
986 1656
987 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
989 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
990 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
991} 1661}
992 1662
993/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
994static void noinline 1664static void noinline ecb_cold
995fd_enomem (EV_P) 1665fd_enomem (EV_P)
996{ 1666{
997 int fd; 1667 int fd;
998 1668
999 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
… …
1017 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
1018 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1019 } 1689 }
1020} 1690}
1021 1691
1692/* used to prepare libev internal fd's */
1693/* this is not fork-safe */
1694inline_speed void
1695fd_intern (int fd)
1696{
1697#ifdef _WIN32
1698 unsigned long arg = 1;
1699 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1700#else
1701 fcntl (fd, F_SETFD, FD_CLOEXEC);
1702 fcntl (fd, F_SETFL, O_NONBLOCK);
1703#endif
1704}
1705
1022/*****************************************************************************/ 1706/*****************************************************************************/
1023 1707
1024/* 1708/*
1025 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * the heap functions want a real array index. array index 0 is guaranteed to not
1026 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1027 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
1028 */ 1712 */
1029 1713
1030/* 1714/*
… …
1178 1862
1179static ANSIG signals [EV_NSIG - 1]; 1863static ANSIG signals [EV_NSIG - 1];
1180 1864
1181/*****************************************************************************/ 1865/*****************************************************************************/
1182 1866
1183/* used to prepare libev internal fd's */ 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1184/* this is not fork-safe */
1185inline_speed void
1186fd_intern (int fd)
1187{
1188#ifdef _WIN32
1189 unsigned long arg = 1;
1190 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1191#else
1192 fcntl (fd, F_SETFD, FD_CLOEXEC);
1193 fcntl (fd, F_SETFL, O_NONBLOCK);
1194#endif
1195}
1196 1868
1197static void noinline 1869static void noinline ecb_cold
1198evpipe_init (EV_P) 1870evpipe_init (EV_P)
1199{ 1871{
1200 if (!ev_is_active (&pipe_w)) 1872 if (!ev_is_active (&pipe_w))
1201 { 1873 {
1202#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1203 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1204 if (evfd < 0 && errno == EINVAL) 1876 if (evfd < 0 && errno == EINVAL)
1205 evfd = eventfd (0, 0); 1877 evfd = eventfd (0, 0);
1206 1878
1207 if (evfd >= 0) 1879 if (evfd >= 0)
… …
1209 evpipe [0] = -1; 1881 evpipe [0] = -1;
1210 fd_intern (evfd); /* doing it twice doesn't hurt */ 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1211 ev_io_set (&pipe_w, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1212 } 1884 }
1213 else 1885 else
1214#endif 1886# endif
1215 { 1887 {
1216 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1217 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1218 1890
1219 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
… …
1224 ev_io_start (EV_A_ &pipe_w); 1896 ev_io_start (EV_A_ &pipe_w);
1225 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1226 } 1898 }
1227} 1899}
1228 1900
1229inline_size void 1901inline_speed void
1230evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1231{ 1903{
1232 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1233 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1234 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1235
1236 *flag = 1;
1237 1924
1238#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1239 if (evfd >= 0) 1926 if (evfd >= 0)
1240 { 1927 {
1241 uint64_t counter = 1; 1928 uint64_t counter = 1;
1242 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1243 } 1930 }
1244 else 1931 else
1245#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1246 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1247 1944
1248 errno = old_errno; 1945 errno = old_errno;
1249 } 1946 }
1250} 1947}
1251 1948
… …
1254static void 1951static void
1255pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1256{ 1953{
1257 int i; 1954 int i;
1258 1955
1956 if (revents & EV_READ)
1957 {
1259#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1260 if (evfd >= 0) 1959 if (evfd >= 0)
1261 { 1960 {
1262 uint64_t counter; 1961 uint64_t counter;
1263 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1264 } 1963 }
1265 else 1964 else
1266#endif 1965#endif
1267 { 1966 {
1268 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1269 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1270 } 1979 }
1271 1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1272 if (sig_pending) 1986 if (sig_pending)
1273 { 1987 {
1274 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1275 1991
1276 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1277 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1278 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1279 } 1995 }
1996#endif
1280 1997
1281#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1282 if (async_pending) 1999 if (async_pending)
1283 { 2000 {
1284 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1285 2004
1286 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1287 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1288 { 2007 {
1289 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1290 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1291 } 2011 }
1292 } 2012 }
1293#endif 2013#endif
1294} 2014}
1295 2015
1296/*****************************************************************************/ 2016/*****************************************************************************/
1297 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1298static void 2035static void
1299ev_sighandler (int signum) 2036ev_sighandler (int signum)
1300{ 2037{
1301#if EV_MULTIPLICITY
1302 EV_P = signals [signum - 1].loop;
1303#endif
1304
1305#ifdef _WIN32 2038#ifdef _WIN32
1306 signal (signum, ev_sighandler); 2039 signal (signum, ev_sighandler);
1307#endif 2040#endif
1308 2041
1309 signals [signum - 1].pending = 1; 2042 ev_feed_signal (signum);
1310 evpipe_write (EV_A_ &sig_pending);
1311} 2043}
1312 2044
1313void noinline 2045void noinline
1314ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1315{ 2047{
1316 WL w; 2048 WL w;
1317 2049
1318 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
1319 return; 2051 return;
… …
1327 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1328 return; 2060 return;
1329#endif 2061#endif
1330 2062
1331 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1332 2065
1333 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1334 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1335} 2068}
1336 2069
… …
1352 break; 2085 break;
1353 } 2086 }
1354} 2087}
1355#endif 2088#endif
1356 2089
2090#endif
2091
1357/*****************************************************************************/ 2092/*****************************************************************************/
1358 2093
2094#if EV_CHILD_ENABLE
1359static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1360
1361#ifndef _WIN32
1362 2096
1363static ev_signal childev; 2097static ev_signal childev;
1364 2098
1365#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1366# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
… …
1371child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1372{ 2106{
1373 ev_child *w; 2107 ev_child *w;
1374 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1375 2109
1376 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1377 { 2111 {
1378 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1379 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1380 { 2114 {
1381 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1406 /* make sure we are called again until all children have been reaped */ 2140 /* make sure we are called again until all children have been reaped */
1407 /* we need to do it this way so that the callback gets called before we continue */ 2141 /* we need to do it this way so that the callback gets called before we continue */
1408 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1409 2143
1410 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1411 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1412 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1413} 2147}
1414 2148
1415#endif 2149#endif
1416 2150
1417/*****************************************************************************/ 2151/*****************************************************************************/
1418 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1419#if EV_USE_PORT 2156#if EV_USE_PORT
1420# include "ev_port.c" 2157# include "ev_port.c"
1421#endif 2158#endif
1422#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1423# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1430#endif 2167#endif
1431#if EV_USE_SELECT 2168#if EV_USE_SELECT
1432# include "ev_select.c" 2169# include "ev_select.c"
1433#endif 2170#endif
1434 2171
1435int 2172int ecb_cold
1436ev_version_major (void) 2173ev_version_major (void) EV_THROW
1437{ 2174{
1438 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1439} 2176}
1440 2177
1441int 2178int ecb_cold
1442ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1443{ 2180{
1444 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1445} 2182}
1446 2183
1447/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1448int inline_size 2185int inline_size ecb_cold
1449enable_secure (void) 2186enable_secure (void)
1450{ 2187{
1451#ifdef _WIN32 2188#ifdef _WIN32
1452 return 0; 2189 return 0;
1453#else 2190#else
1454 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1455 || getgid () != getegid (); 2192 || getgid () != getegid ();
1456#endif 2193#endif
1457} 2194}
1458 2195
1459unsigned int 2196unsigned int ecb_cold
1460ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1461{ 2198{
1462 unsigned int flags = 0; 2199 unsigned int flags = 0;
1463 2200
1464 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1465 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1468 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1469 2206
1470 return flags; 2207 return flags;
1471} 2208}
1472 2209
1473unsigned int 2210unsigned int ecb_cold
1474ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1475{ 2212{
1476 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1477 2214
1478#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1479 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1483#ifdef __APPLE__ 2220#ifdef __APPLE__
1484 /* only select works correctly on that "unix-certified" platform */ 2221 /* only select works correctly on that "unix-certified" platform */
1485 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1486 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1487#endif 2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif
1488 2228
1489 return flags; 2229 return flags;
1490} 2230}
1491 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1492unsigned int 2244unsigned int
1493ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1494{ 2246{
1495 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 return backend;
1496
1497 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1498 /* please fix it and tell me how to detect the fix */
1499 flags &= ~EVBACKEND_EPOLL;
1500
1501 return flags;
1502} 2248}
1503 2249
2250#if EV_FEATURE_API
1504unsigned int 2251unsigned int
1505ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1506{ 2253{
1507 return backend; 2254 return loop_count;
1508} 2255}
1509 2256
1510#if EV_MINIMAL < 2
1511unsigned int 2257unsigned int
1512ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1513{
1514 return loop_count;
1515}
1516
1517unsigned int
1518ev_loop_depth (EV_P)
1519{ 2259{
1520 return loop_depth; 2260 return loop_depth;
1521} 2261}
1522 2262
1523void 2263void
1524ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2265{
1526 io_blocktime = interval; 2266 io_blocktime = interval;
1527} 2267}
1528 2268
1529void 2269void
1530ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1531{ 2271{
1532 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1533} 2273}
1534 2274
1535void 2275void
1536ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1537{ 2277{
1538 userdata = data; 2278 userdata = data;
1539} 2279}
1540 2280
1541void * 2281void *
1542ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1543{ 2283{
1544 return userdata; 2284 return userdata;
1545} 2285}
1546 2286
2287void
1547void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1548{ 2289{
1549 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1550} 2291}
1551 2292
2293void
1552void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1553{ 2295{
1554 release_cb = release; 2296 release_cb = release;
1555 acquire_cb = acquire; 2297 acquire_cb = acquire;
1556} 2298}
1557#endif 2299#endif
1558 2300
1559/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1560static void noinline 2302static void noinline ecb_cold
1561loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1562{ 2304{
1563 if (!backend) 2305 if (!backend)
1564 { 2306 {
2307 origflags = flags;
2308
1565#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1566 if (!have_realtime) 2310 if (!have_realtime)
1567 { 2311 {
1568 struct timespec ts; 2312 struct timespec ts;
1569 2313
… …
1591 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1592 && !enable_secure () 2336 && !enable_secure ()
1593 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1594 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1595 2339
1596 ev_rt_now = ev_time (); 2340 ev_rt_now = ev_time ();
1597 mn_now = get_clock (); 2341 mn_now = get_clock ();
1598 now_floor = mn_now; 2342 now_floor = mn_now;
1599 rtmn_diff = ev_rt_now - mn_now; 2343 rtmn_diff = ev_rt_now - mn_now;
1600#if EV_MINIMAL < 2 2344#if EV_FEATURE_API
1601 invoke_cb = ev_invoke_pending; 2345 invoke_cb = ev_invoke_pending;
1602#endif 2346#endif
1603 2347
1604 io_blocktime = 0.; 2348 io_blocktime = 0.;
1605 timeout_blocktime = 0.; 2349 timeout_blocktime = 0.;
1606 backend = 0; 2350 backend = 0;
1607 backend_fd = -1; 2351 backend_fd = -1;
1608 sig_pending = 0; 2352 sig_pending = 0;
1609#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1610 async_pending = 0; 2354 async_pending = 0;
1611#endif 2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
1612#if EV_USE_INOTIFY 2358#if EV_USE_INOTIFY
1613 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1614#endif 2360#endif
1615#if EV_USE_SIGNALFD 2361#if EV_USE_SIGNALFD
1616 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1617#endif 2363#endif
1618 2364
1619 if (!(flags & 0x0000ffffU)) 2365 if (!(flags & EVBACKEND_MASK))
1620 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1621 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1622#if EV_USE_PORT 2371#if EV_USE_PORT
1623 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1624#endif 2373#endif
1625#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1626 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1635 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1636#endif 2385#endif
1637 2386
1638 ev_prepare_init (&pending_w, pendingcb); 2387 ev_prepare_init (&pending_w, pendingcb);
1639 2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1640 ev_init (&pipe_w, pipecb); 2390 ev_init (&pipe_w, pipecb);
1641 ev_set_priority (&pipe_w, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1642 } 2393 }
1643} 2394}
1644 2395
1645/* free up a loop structure */ 2396/* free up a loop structure */
1646static void noinline 2397void ecb_cold
1647loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1648{ 2399{
1649 int i; 2400 int i;
2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
1650 2424
1651 if (ev_is_active (&pipe_w)) 2425 if (ev_is_active (&pipe_w))
1652 { 2426 {
1653 /*ev_ref (EV_A);*/ 2427 /*ev_ref (EV_A);*/
1654 /*ev_io_stop (EV_A_ &pipe_w);*/ 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1676#endif 2450#endif
1677 2451
1678 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1679 close (backend_fd); 2453 close (backend_fd);
1680 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1681#if EV_USE_PORT 2458#if EV_USE_PORT
1682 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1683#endif 2460#endif
1684#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1685 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1712 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1713#endif 2490#endif
1714#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1715 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1716#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1717 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1718 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1719#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1720 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1721#endif 2501#endif
1722 2502
1723 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1724} 2513}
1725 2514
1726#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1727inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1728#endif 2517#endif
… …
1743 infy_fork (EV_A); 2532 infy_fork (EV_A);
1744#endif 2533#endif
1745 2534
1746 if (ev_is_active (&pipe_w)) 2535 if (ev_is_active (&pipe_w))
1747 { 2536 {
1748 /* this "locks" the handlers against writing to the pipe */ 2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1749 /* while we modify the fd vars */
1750 sig_pending = 1;
1751#if EV_ASYNC_ENABLE
1752 async_pending = 1;
1753#endif
1754 2538
1755 ev_ref (EV_A); 2539 ev_ref (EV_A);
1756 ev_io_stop (EV_A_ &pipe_w); 2540 ev_io_stop (EV_A_ &pipe_w);
1757 2541
1758#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
… …
1764 { 2548 {
1765 EV_WIN32_CLOSE_FD (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1766 EV_WIN32_CLOSE_FD (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1767 } 2551 }
1768 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1769 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1770 /* now iterate over everything, in case we missed something */ 2555 /* iterate over everything, in case we missed something before */
1771 pipecb (EV_A_ &pipe_w, EV_READ); 2556 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2557#endif
1772 } 2558 }
1773 2559
1774 postfork = 0; 2560 postfork = 0;
1775} 2561}
1776 2562
1777#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1778 2564
1779struct ev_loop * 2565struct ev_loop * ecb_cold
1780ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1781{ 2567{
1782 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1783 2569
1784 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1785 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1786 2572
1787 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1788 return EV_A; 2574 return EV_A;
1789 2575
2576 ev_free (EV_A);
1790 return 0; 2577 return 0;
1791} 2578}
1792 2579
1793void
1794ev_loop_destroy (EV_P)
1795{
1796 loop_destroy (EV_A);
1797 ev_free (loop);
1798}
1799
1800void
1801ev_loop_fork (EV_P)
1802{
1803 postfork = 1; /* must be in line with ev_default_fork */
1804}
1805#endif /* multiplicity */ 2580#endif /* multiplicity */
1806 2581
1807#if EV_VERIFY 2582#if EV_VERIFY
1808static void noinline 2583static void noinline ecb_cold
1809verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1810{ 2585{
1811 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1812 2587
1813 if (w->pending) 2588 if (w->pending)
1814 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1815} 2590}
1816 2591
1817static void noinline 2592static void noinline ecb_cold
1818verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1819{ 2594{
1820 int i; 2595 int i;
1821 2596
1822 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1827 2602
1828 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1829 } 2604 }
1830} 2605}
1831 2606
1832static void noinline 2607static void noinline ecb_cold
1833array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1834{ 2609{
1835 while (cnt--) 2610 while (cnt--)
1836 { 2611 {
1837 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1838 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1839 } 2614 }
1840} 2615}
1841#endif 2616#endif
1842 2617
1843#if EV_MINIMAL < 2 2618#if EV_FEATURE_API
1844void 2619void ecb_cold
1845ev_loop_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
1846{ 2621{
1847#if EV_VERIFY 2622#if EV_VERIFY
1848 int i; 2623 int i;
1849 WL w; 2624 WL w, w2;
1850 2625
1851 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1852 2627
1853 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1854 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1855 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1856 2631
1857 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1858 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1859 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1860 { 2638 {
1861 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1862 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1863 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1864 } 2649 }
2650 }
1865 2651
1866 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1867 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1868 2654
1869#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1884#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1885 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1886 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1887#endif 2673#endif
1888 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1889#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1890 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1891 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1892#endif 2683#endif
1893 2684
2685#if EV_PREPARE_ENABLE
1894 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1895 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1896 2689
2690#if EV_CHECK_ENABLE
1897 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1898 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1899 2694
1900# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1901 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1902 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1903# endif 2700# endif
1904#endif 2701#endif
1905} 2702}
1906#endif 2703#endif
1907 2704
1908#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1909struct ev_loop * 2706struct ev_loop * ecb_cold
1910ev_default_loop_init (unsigned int flags)
1911#else 2707#else
1912int 2708int
2709#endif
1913ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1914#endif
1915{ 2711{
1916 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1917 { 2713 {
1918#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1919 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1923 2719
1924 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1925 2721
1926 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1927 { 2723 {
1928#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1929 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1930 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1931 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1932 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1933#endif 2729#endif
… …
1938 2734
1939 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1940} 2736}
1941 2737
1942void 2738void
1943ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1944{ 2740{
1945#if EV_MULTIPLICITY 2741 postfork = 1;
1946 EV_P = ev_default_loop_ptr;
1947#endif
1948
1949 ev_default_loop_ptr = 0;
1950
1951#ifndef _WIN32
1952 ev_ref (EV_A); /* child watcher */
1953 ev_signal_stop (EV_A_ &childev);
1954#endif
1955
1956 loop_destroy (EV_A);
1957}
1958
1959void
1960ev_default_fork (void)
1961{
1962#if EV_MULTIPLICITY
1963 EV_P = ev_default_loop_ptr;
1964#endif
1965
1966 postfork = 1; /* must be in line with ev_loop_fork */
1967} 2742}
1968 2743
1969/*****************************************************************************/ 2744/*****************************************************************************/
1970 2745
1971void 2746void
… …
1973{ 2748{
1974 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1975} 2750}
1976 2751
1977unsigned int 2752unsigned int
1978ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
1979{ 2754{
1980 int pri; 2755 int pri;
1981 unsigned int count = 0; 2756 unsigned int count = 0;
1982 2757
1983 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
… …
1987} 2762}
1988 2763
1989void noinline 2764void noinline
1990ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
1991{ 2766{
1992 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1993
1994 for (pri = NUMPRI; pri--; )
1995 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
1996 { 2769 {
1997 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1998
1999 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2000 /* ^ this is no longer true, as pending_w could be here */
2001 2771
2002 p->w->pending = 0; 2772 p->w->pending = 0;
2003 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
2004 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2005 } 2775 }
… …
2062 EV_FREQUENT_CHECK; 2832 EV_FREQUENT_CHECK;
2063 feed_reverse (EV_A_ (W)w); 2833 feed_reverse (EV_A_ (W)w);
2064 } 2834 }
2065 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2066 2836
2067 feed_reverse_done (EV_A_ EV_TIMEOUT); 2837 feed_reverse_done (EV_A_ EV_TIMER);
2068 } 2838 }
2069} 2839}
2070 2840
2071#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
2072/* make periodics pending */ 2867/* make periodics pending */
2073inline_size void 2868inline_size void
2074periodics_reify (EV_P) 2869periodics_reify (EV_P)
2075{ 2870{
2076 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2077 2872
2078 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2079 { 2874 {
2080 int feed_count = 0;
2081
2082 do 2875 do
2083 { 2876 {
2084 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2085 2878
2086 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2095 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
2096 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
2097 } 2890 }
2098 else if (w->interval) 2891 else if (w->interval)
2099 { 2892 {
2100 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2893 periodic_recalc (EV_A_ w);
2101 /* if next trigger time is not sufficiently in the future, put it there */
2102 /* this might happen because of floating point inexactness */
2103 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2104 {
2105 ev_at (w) += w->interval;
2106
2107 /* if interval is unreasonably low we might still have a time in the past */
2108 /* so correct this. this will make the periodic very inexact, but the user */
2109 /* has effectively asked to get triggered more often than possible */
2110 if (ev_at (w) < ev_rt_now)
2111 ev_at (w) = ev_rt_now;
2112 }
2113
2114 ANHE_at_cache (periodics [HEAP0]); 2894 ANHE_at_cache (periodics [HEAP0]);
2115 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
2116 } 2896 }
2117 else 2897 else
2118 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2125 feed_reverse_done (EV_A_ EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
2126 } 2906 }
2127} 2907}
2128 2908
2129/* simply recalculate all periodics */ 2909/* simply recalculate all periodics */
2130/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2131static void noinline 2911static void noinline ecb_cold
2132periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
2133{ 2913{
2134 int i; 2914 int i;
2135 2915
2136 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
2139 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2140 2920
2141 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
2142 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2143 else if (w->interval) 2923 else if (w->interval)
2144 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
2145 2925
2146 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
2147 } 2927 }
2148 2928
2149 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
2150} 2930}
2151#endif 2931#endif
2152 2932
2153/* adjust all timers by a given offset */ 2933/* adjust all timers by a given offset */
2154static void noinline 2934static void noinline ecb_cold
2155timers_reschedule (EV_P_ ev_tstamp adjust) 2935timers_reschedule (EV_P_ ev_tstamp adjust)
2156{ 2936{
2157 int i; 2937 int i;
2158 2938
2159 for (i = 0; i < timercnt; ++i) 2939 for (i = 0; i < timercnt; ++i)
… …
2196 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
2197 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
2198 */ 2978 */
2199 for (i = 4; --i; ) 2979 for (i = 4; --i; )
2200 { 2980 {
2981 ev_tstamp diff;
2201 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
2202 2983
2984 diff = odiff - rtmn_diff;
2985
2203 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2204 return; /* all is well */ 2987 return; /* all is well */
2205 2988
2206 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
2207 mn_now = get_clock (); 2990 mn_now = get_clock ();
2208 now_floor = mn_now; 2991 now_floor = mn_now;
… …
2230 3013
2231 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2232 } 3015 }
2233} 3016}
2234 3017
2235void 3018int
2236ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2237{ 3020{
2238#if EV_MINIMAL < 2 3021#if EV_FEATURE_API
2239 ++loop_depth; 3022 ++loop_depth;
2240#endif 3023#endif
2241 3024
2242 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2243 3026
2244 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
2245 3028
2246 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2247 3030
2248 do 3031 do
2249 { 3032 {
2250#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
2251 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
2252#endif 3035#endif
2253 3036
2254#ifndef _WIN32 3037#ifndef _WIN32
2255 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
2256 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
2268 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2269 EV_INVOKE_PENDING; 3052 EV_INVOKE_PENDING;
2270 } 3053 }
2271#endif 3054#endif
2272 3055
3056#if EV_PREPARE_ENABLE
2273 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
2274 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
2275 { 3059 {
2276 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2277 EV_INVOKE_PENDING; 3061 EV_INVOKE_PENDING;
2278 } 3062 }
3063#endif
2279 3064
2280 if (expect_false (loop_done)) 3065 if (expect_false (loop_done))
2281 break; 3066 break;
2282 3067
2283 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
… …
2290 /* calculate blocking time */ 3075 /* calculate blocking time */
2291 { 3076 {
2292 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
2293 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
2294 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2295 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2296 { 3092 {
2297 /* remember old timestamp for io_blocktime calculation */
2298 ev_tstamp prev_mn_now = mn_now;
2299
2300 /* update time to cancel out callback processing overhead */
2301 time_update (EV_A_ 1e100);
2302
2303 waittime = MAX_BLOCKTIME; 3093 waittime = MAX_BLOCKTIME;
2304 3094
2305 if (timercnt) 3095 if (timercnt)
2306 { 3096 {
2307 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2308 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
2309 } 3099 }
2310 3100
2311#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
2312 if (periodiccnt) 3102 if (periodiccnt)
2313 { 3103 {
2314 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2315 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2316 } 3106 }
2317#endif 3107#endif
2318 3108
2319 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2320 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2321 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
3112
3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
2322 3117
2323 /* extra check because io_blocktime is commonly 0 */ 3118 /* extra check because io_blocktime is commonly 0 */
2324 if (expect_false (io_blocktime)) 3119 if (expect_false (io_blocktime))
2325 { 3120 {
2326 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2327 3122
2328 if (sleeptime > waittime - backend_fudge) 3123 if (sleeptime > waittime - backend_mintime)
2329 sleeptime = waittime - backend_fudge; 3124 sleeptime = waittime - backend_mintime;
2330 3125
2331 if (expect_true (sleeptime > 0.)) 3126 if (expect_true (sleeptime > 0.))
2332 { 3127 {
2333 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2334 waittime -= sleeptime; 3129 waittime -= sleeptime;
2335 } 3130 }
2336 } 3131 }
2337 } 3132 }
2338 3133
2339#if EV_MINIMAL < 2 3134#if EV_FEATURE_API
2340 ++loop_count; 3135 ++loop_count;
2341#endif 3136#endif
2342 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2343 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
2344 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 ECB_MEMORY_FENCE_ACQUIRE;
3144 if (pipe_write_skipped)
3145 {
3146 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3147 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3148 }
3149
2345 3150
2346 /* update ev_rt_now, do magic */ 3151 /* update ev_rt_now, do magic */
2347 time_update (EV_A_ waittime + sleeptime); 3152 time_update (EV_A_ waittime + sleeptime);
2348 } 3153 }
2349 3154
… …
2356#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2357 /* queue idle watchers unless other events are pending */ 3162 /* queue idle watchers unless other events are pending */
2358 idle_reify (EV_A); 3163 idle_reify (EV_A);
2359#endif 3164#endif
2360 3165
3166#if EV_CHECK_ENABLE
2361 /* queue check watchers, to be executed first */ 3167 /* queue check watchers, to be executed first */
2362 if (expect_false (checkcnt)) 3168 if (expect_false (checkcnt))
2363 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3169 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3170#endif
2364 3171
2365 EV_INVOKE_PENDING; 3172 EV_INVOKE_PENDING;
2366 } 3173 }
2367 while (expect_true ( 3174 while (expect_true (
2368 activecnt 3175 activecnt
2369 && !loop_done 3176 && !loop_done
2370 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3177 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2371 )); 3178 ));
2372 3179
2373 if (loop_done == EVUNLOOP_ONE) 3180 if (loop_done == EVBREAK_ONE)
2374 loop_done = EVUNLOOP_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
2375 3182
2376#if EV_MINIMAL < 2 3183 /* pendingpri is normally -1 here, which is not a good */
3184 /* value when returning to an ev_invoke_pending */
3185 pendingpri = NUMPRI - 1;
3186
3187#if EV_FEATURE_API
2377 --loop_depth; 3188 --loop_depth;
2378#endif 3189#endif
3190
3191 return activecnt;
2379} 3192}
2380 3193
2381void 3194void
2382ev_unloop (EV_P_ int how) 3195ev_break (EV_P_ int how) EV_THROW
2383{ 3196{
2384 loop_done = how; 3197 loop_done = how;
2385} 3198}
2386 3199
2387void 3200void
2388ev_ref (EV_P) 3201ev_ref (EV_P) EV_THROW
2389{ 3202{
2390 ++activecnt; 3203 ++activecnt;
2391} 3204}
2392 3205
2393void 3206void
2394ev_unref (EV_P) 3207ev_unref (EV_P) EV_THROW
2395{ 3208{
2396 --activecnt; 3209 --activecnt;
2397} 3210}
2398 3211
2399void 3212void
2400ev_now_update (EV_P) 3213ev_now_update (EV_P) EV_THROW
2401{ 3214{
2402 time_update (EV_A_ 1e100); 3215 time_update (EV_A_ 1e100);
2403} 3216}
2404 3217
2405void 3218void
2406ev_suspend (EV_P) 3219ev_suspend (EV_P) EV_THROW
2407{ 3220{
2408 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
2409} 3222}
2410 3223
2411void 3224void
2412ev_resume (EV_P) 3225ev_resume (EV_P) EV_THROW
2413{ 3226{
2414 ev_tstamp mn_prev = mn_now; 3227 ev_tstamp mn_prev = mn_now;
2415 3228
2416 ev_now_update (EV_A); 3229 ev_now_update (EV_A);
2417 timers_reschedule (EV_A_ mn_now - mn_prev); 3230 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2456 w->pending = 0; 3269 w->pending = 0;
2457 } 3270 }
2458} 3271}
2459 3272
2460int 3273int
2461ev_clear_pending (EV_P_ void *w) 3274ev_clear_pending (EV_P_ void *w) EV_THROW
2462{ 3275{
2463 W w_ = (W)w; 3276 W w_ = (W)w;
2464 int pending = w_->pending; 3277 int pending = w_->pending;
2465 3278
2466 if (expect_true (pending)) 3279 if (expect_true (pending))
… …
2499} 3312}
2500 3313
2501/*****************************************************************************/ 3314/*****************************************************************************/
2502 3315
2503void noinline 3316void noinline
2504ev_io_start (EV_P_ ev_io *w) 3317ev_io_start (EV_P_ ev_io *w) EV_THROW
2505{ 3318{
2506 int fd = w->fd; 3319 int fd = w->fd;
2507 3320
2508 if (expect_false (ev_is_active (w))) 3321 if (expect_false (ev_is_active (w)))
2509 return; 3322 return;
2510 3323
2511 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3324 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2512 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3325 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2513 3326
2514 EV_FREQUENT_CHECK; 3327 EV_FREQUENT_CHECK;
2515 3328
2516 ev_start (EV_A_ (W)w, 1); 3329 ev_start (EV_A_ (W)w, 1);
2517 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3330 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2518 wlist_add (&anfds[fd].head, (WL)w); 3331 wlist_add (&anfds[fd].head, (WL)w);
2519 3332
3333 /* common bug, apparently */
3334 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3335
2520 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3336 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2521 w->events &= ~EV__IOFDSET; 3337 w->events &= ~EV__IOFDSET;
2522 3338
2523 EV_FREQUENT_CHECK; 3339 EV_FREQUENT_CHECK;
2524} 3340}
2525 3341
2526void noinline 3342void noinline
2527ev_io_stop (EV_P_ ev_io *w) 3343ev_io_stop (EV_P_ ev_io *w) EV_THROW
2528{ 3344{
2529 clear_pending (EV_A_ (W)w); 3345 clear_pending (EV_A_ (W)w);
2530 if (expect_false (!ev_is_active (w))) 3346 if (expect_false (!ev_is_active (w)))
2531 return; 3347 return;
2532 3348
… …
2535 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2536 3352
2537 wlist_del (&anfds[w->fd].head, (WL)w); 3353 wlist_del (&anfds[w->fd].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 3354 ev_stop (EV_A_ (W)w);
2539 3355
2540 fd_change (EV_A_ w->fd, 1); 3356 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2541 3357
2542 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2543} 3359}
2544 3360
2545void noinline 3361void noinline
2546ev_timer_start (EV_P_ ev_timer *w) 3362ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2547{ 3363{
2548 if (expect_false (ev_is_active (w))) 3364 if (expect_false (ev_is_active (w)))
2549 return; 3365 return;
2550 3366
2551 ev_at (w) += mn_now; 3367 ev_at (w) += mn_now;
… …
2565 3381
2566 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3382 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2567} 3383}
2568 3384
2569void noinline 3385void noinline
2570ev_timer_stop (EV_P_ ev_timer *w) 3386ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2571{ 3387{
2572 clear_pending (EV_A_ (W)w); 3388 clear_pending (EV_A_ (W)w);
2573 if (expect_false (!ev_is_active (w))) 3389 if (expect_false (!ev_is_active (w)))
2574 return; 3390 return;
2575 3391
… …
2587 timers [active] = timers [timercnt + HEAP0]; 3403 timers [active] = timers [timercnt + HEAP0];
2588 adjustheap (timers, timercnt, active); 3404 adjustheap (timers, timercnt, active);
2589 } 3405 }
2590 } 3406 }
2591 3407
2592 EV_FREQUENT_CHECK;
2593
2594 ev_at (w) -= mn_now; 3408 ev_at (w) -= mn_now;
2595 3409
2596 ev_stop (EV_A_ (W)w); 3410 ev_stop (EV_A_ (W)w);
3411
3412 EV_FREQUENT_CHECK;
2597} 3413}
2598 3414
2599void noinline 3415void noinline
2600ev_timer_again (EV_P_ ev_timer *w) 3416ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2601{ 3417{
2602 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
3419
3420 clear_pending (EV_A_ (W)w);
2603 3421
2604 if (ev_is_active (w)) 3422 if (ev_is_active (w))
2605 { 3423 {
2606 if (w->repeat) 3424 if (w->repeat)
2607 { 3425 {
… …
2620 3438
2621 EV_FREQUENT_CHECK; 3439 EV_FREQUENT_CHECK;
2622} 3440}
2623 3441
2624ev_tstamp 3442ev_tstamp
2625ev_timer_remaining (EV_P_ ev_timer *w) 3443ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2626{ 3444{
2627 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3445 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2628} 3446}
2629 3447
2630#if EV_PERIODIC_ENABLE 3448#if EV_PERIODIC_ENABLE
2631void noinline 3449void noinline
2632ev_periodic_start (EV_P_ ev_periodic *w) 3450ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2633{ 3451{
2634 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2635 return; 3453 return;
2636 3454
2637 if (w->reschedule_cb) 3455 if (w->reschedule_cb)
2638 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3456 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2639 else if (w->interval) 3457 else if (w->interval)
2640 { 3458 {
2641 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3459 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2642 /* this formula differs from the one in periodic_reify because we do not always round up */ 3460 periodic_recalc (EV_A_ w);
2643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2644 } 3461 }
2645 else 3462 else
2646 ev_at (w) = w->offset; 3463 ev_at (w) = w->offset;
2647 3464
2648 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
… …
2658 3475
2659 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3476 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2660} 3477}
2661 3478
2662void noinline 3479void noinline
2663ev_periodic_stop (EV_P_ ev_periodic *w) 3480ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2664{ 3481{
2665 clear_pending (EV_A_ (W)w); 3482 clear_pending (EV_A_ (W)w);
2666 if (expect_false (!ev_is_active (w))) 3483 if (expect_false (!ev_is_active (w)))
2667 return; 3484 return;
2668 3485
… …
2680 periodics [active] = periodics [periodiccnt + HEAP0]; 3497 periodics [active] = periodics [periodiccnt + HEAP0];
2681 adjustheap (periodics, periodiccnt, active); 3498 adjustheap (periodics, periodiccnt, active);
2682 } 3499 }
2683 } 3500 }
2684 3501
2685 EV_FREQUENT_CHECK;
2686
2687 ev_stop (EV_A_ (W)w); 3502 ev_stop (EV_A_ (W)w);
3503
3504 EV_FREQUENT_CHECK;
2688} 3505}
2689 3506
2690void noinline 3507void noinline
2691ev_periodic_again (EV_P_ ev_periodic *w) 3508ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2692{ 3509{
2693 /* TODO: use adjustheap and recalculation */ 3510 /* TODO: use adjustheap and recalculation */
2694 ev_periodic_stop (EV_A_ w); 3511 ev_periodic_stop (EV_A_ w);
2695 ev_periodic_start (EV_A_ w); 3512 ev_periodic_start (EV_A_ w);
2696} 3513}
… …
2698 3515
2699#ifndef SA_RESTART 3516#ifndef SA_RESTART
2700# define SA_RESTART 0 3517# define SA_RESTART 0
2701#endif 3518#endif
2702 3519
3520#if EV_SIGNAL_ENABLE
3521
2703void noinline 3522void noinline
2704ev_signal_start (EV_P_ ev_signal *w) 3523ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2705{ 3524{
2706 if (expect_false (ev_is_active (w))) 3525 if (expect_false (ev_is_active (w)))
2707 return; 3526 return;
2708 3527
2709 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3528 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2767 sa.sa_handler = ev_sighandler; 3586 sa.sa_handler = ev_sighandler;
2768 sigfillset (&sa.sa_mask); 3587 sigfillset (&sa.sa_mask);
2769 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3588 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2770 sigaction (w->signum, &sa, 0); 3589 sigaction (w->signum, &sa, 0);
2771 3590
3591 if (origflags & EVFLAG_NOSIGMASK)
3592 {
2772 sigemptyset (&sa.sa_mask); 3593 sigemptyset (&sa.sa_mask);
2773 sigaddset (&sa.sa_mask, w->signum); 3594 sigaddset (&sa.sa_mask, w->signum);
2774 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3595 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3596 }
2775#endif 3597#endif
2776 } 3598 }
2777 3599
2778 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2779} 3601}
2780 3602
2781void noinline 3603void noinline
2782ev_signal_stop (EV_P_ ev_signal *w) 3604ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2783{ 3605{
2784 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2785 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2786 return; 3608 return;
2787 3609
… …
2813 } 3635 }
2814 3636
2815 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2816} 3638}
2817 3639
3640#endif
3641
3642#if EV_CHILD_ENABLE
3643
2818void 3644void
2819ev_child_start (EV_P_ ev_child *w) 3645ev_child_start (EV_P_ ev_child *w) EV_THROW
2820{ 3646{
2821#if EV_MULTIPLICITY 3647#if EV_MULTIPLICITY
2822 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3648 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2823#endif 3649#endif
2824 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2825 return; 3651 return;
2826 3652
2827 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
2828 3654
2829 ev_start (EV_A_ (W)w, 1); 3655 ev_start (EV_A_ (W)w, 1);
2830 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3656 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2831 3657
2832 EV_FREQUENT_CHECK; 3658 EV_FREQUENT_CHECK;
2833} 3659}
2834 3660
2835void 3661void
2836ev_child_stop (EV_P_ ev_child *w) 3662ev_child_stop (EV_P_ ev_child *w) EV_THROW
2837{ 3663{
2838 clear_pending (EV_A_ (W)w); 3664 clear_pending (EV_A_ (W)w);
2839 if (expect_false (!ev_is_active (w))) 3665 if (expect_false (!ev_is_active (w)))
2840 return; 3666 return;
2841 3667
2842 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2843 3669
2844 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3670 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2845 ev_stop (EV_A_ (W)w); 3671 ev_stop (EV_A_ (W)w);
2846 3672
2847 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
2848} 3674}
3675
3676#endif
2849 3677
2850#if EV_STAT_ENABLE 3678#if EV_STAT_ENABLE
2851 3679
2852# ifdef _WIN32 3680# ifdef _WIN32
2853# undef lstat 3681# undef lstat
… …
2859#define MIN_STAT_INTERVAL 0.1074891 3687#define MIN_STAT_INTERVAL 0.1074891
2860 3688
2861static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3689static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2862 3690
2863#if EV_USE_INOTIFY 3691#if EV_USE_INOTIFY
2864# define EV_INOTIFY_BUFSIZE 8192 3692
3693/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3694# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2865 3695
2866static void noinline 3696static void noinline
2867infy_add (EV_P_ ev_stat *w) 3697infy_add (EV_P_ ev_stat *w)
2868{ 3698{
2869 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3699 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
… …
2912 if (!pend || pend == path) 3742 if (!pend || pend == path)
2913 break; 3743 break;
2914 3744
2915 *pend = 0; 3745 *pend = 0;
2916 w->wd = inotify_add_watch (fs_fd, path, mask); 3746 w->wd = inotify_add_watch (fs_fd, path, mask);
2917 } 3747 }
2918 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3748 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2919 } 3749 }
2920 } 3750 }
2921 3751
2922 if (w->wd >= 0) 3752 if (w->wd >= 0)
2923 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3753 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2924 3754
2925 /* now re-arm timer, if required */ 3755 /* now re-arm timer, if required */
2926 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3756 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2927 ev_timer_again (EV_A_ &w->timer); 3757 ev_timer_again (EV_A_ &w->timer);
2928 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3758 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2936 3766
2937 if (wd < 0) 3767 if (wd < 0)
2938 return; 3768 return;
2939 3769
2940 w->wd = -2; 3770 w->wd = -2;
2941 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3771 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2942 wlist_del (&fs_hash [slot].head, (WL)w); 3772 wlist_del (&fs_hash [slot].head, (WL)w);
2943 3773
2944 /* remove this watcher, if others are watching it, they will rearm */ 3774 /* remove this watcher, if others are watching it, they will rearm */
2945 inotify_rm_watch (fs_fd, wd); 3775 inotify_rm_watch (fs_fd, wd);
2946} 3776}
… …
2948static void noinline 3778static void noinline
2949infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3779infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2950{ 3780{
2951 if (slot < 0) 3781 if (slot < 0)
2952 /* overflow, need to check for all hash slots */ 3782 /* overflow, need to check for all hash slots */
2953 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3783 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2954 infy_wd (EV_A_ slot, wd, ev); 3784 infy_wd (EV_A_ slot, wd, ev);
2955 else 3785 else
2956 { 3786 {
2957 WL w_; 3787 WL w_;
2958 3788
2959 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3789 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2960 { 3790 {
2961 ev_stat *w = (ev_stat *)w_; 3791 ev_stat *w = (ev_stat *)w_;
2962 w_ = w_->next; /* lets us remove this watcher and all before it */ 3792 w_ = w_->next; /* lets us remove this watcher and all before it */
2963 3793
2964 if (w->wd == wd || wd == -1) 3794 if (w->wd == wd || wd == -1)
2965 { 3795 {
2966 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3796 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2967 { 3797 {
2968 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3798 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2969 w->wd = -1; 3799 w->wd = -1;
2970 infy_add (EV_A_ w); /* re-add, no matter what */ 3800 infy_add (EV_A_ w); /* re-add, no matter what */
2971 } 3801 }
2972 3802
2973 stat_timer_cb (EV_A_ &w->timer, 0); 3803 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2978 3808
2979static void 3809static void
2980infy_cb (EV_P_ ev_io *w, int revents) 3810infy_cb (EV_P_ ev_io *w, int revents)
2981{ 3811{
2982 char buf [EV_INOTIFY_BUFSIZE]; 3812 char buf [EV_INOTIFY_BUFSIZE];
2983 struct inotify_event *ev = (struct inotify_event *)buf;
2984 int ofs; 3813 int ofs;
2985 int len = read (fs_fd, buf, sizeof (buf)); 3814 int len = read (fs_fd, buf, sizeof (buf));
2986 3815
2987 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3816 for (ofs = 0; ofs < len; )
3817 {
3818 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2988 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3819 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3820 ofs += sizeof (struct inotify_event) + ev->len;
3821 }
2989} 3822}
2990 3823
2991inline_size void 3824inline_size void ecb_cold
2992check_2625 (EV_P) 3825ev_check_2625 (EV_P)
2993{ 3826{
2994 /* kernels < 2.6.25 are borked 3827 /* kernels < 2.6.25 are borked
2995 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3828 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2996 */ 3829 */
2997 struct utsname buf; 3830 if (ev_linux_version () < 0x020619)
2998 int major, minor, micro;
2999
3000 if (uname (&buf))
3001 return;
3002
3003 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3004 return;
3005
3006 if (major < 2
3007 || (major == 2 && minor < 6)
3008 || (major == 2 && minor == 6 && micro < 25))
3009 return; 3831 return;
3010 3832
3011 fs_2625 = 1; 3833 fs_2625 = 1;
3012} 3834}
3013 3835
3014inline_size int 3836inline_size int
3015infy_newfd (void) 3837infy_newfd (void)
3016{ 3838{
3017#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3839#if defined IN_CLOEXEC && defined IN_NONBLOCK
3018 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3840 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3019 if (fd >= 0) 3841 if (fd >= 0)
3020 return fd; 3842 return fd;
3021#endif 3843#endif
3022 return inotify_init (); 3844 return inotify_init ();
… …
3028 if (fs_fd != -2) 3850 if (fs_fd != -2)
3029 return; 3851 return;
3030 3852
3031 fs_fd = -1; 3853 fs_fd = -1;
3032 3854
3033 check_2625 (EV_A); 3855 ev_check_2625 (EV_A);
3034 3856
3035 fs_fd = infy_newfd (); 3857 fs_fd = infy_newfd ();
3036 3858
3037 if (fs_fd >= 0) 3859 if (fs_fd >= 0)
3038 { 3860 {
… …
3063 ev_io_set (&fs_w, fs_fd, EV_READ); 3885 ev_io_set (&fs_w, fs_fd, EV_READ);
3064 ev_io_start (EV_A_ &fs_w); 3886 ev_io_start (EV_A_ &fs_w);
3065 ev_unref (EV_A); 3887 ev_unref (EV_A);
3066 } 3888 }
3067 3889
3068 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3890 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3069 { 3891 {
3070 WL w_ = fs_hash [slot].head; 3892 WL w_ = fs_hash [slot].head;
3071 fs_hash [slot].head = 0; 3893 fs_hash [slot].head = 0;
3072 3894
3073 while (w_) 3895 while (w_)
… …
3097#else 3919#else
3098# define EV_LSTAT(p,b) lstat (p, b) 3920# define EV_LSTAT(p,b) lstat (p, b)
3099#endif 3921#endif
3100 3922
3101void 3923void
3102ev_stat_stat (EV_P_ ev_stat *w) 3924ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3103{ 3925{
3104 if (lstat (w->path, &w->attr) < 0) 3926 if (lstat (w->path, &w->attr) < 0)
3105 w->attr.st_nlink = 0; 3927 w->attr.st_nlink = 0;
3106 else if (!w->attr.st_nlink) 3928 else if (!w->attr.st_nlink)
3107 w->attr.st_nlink = 1; 3929 w->attr.st_nlink = 1;
… …
3146 ev_feed_event (EV_A_ w, EV_STAT); 3968 ev_feed_event (EV_A_ w, EV_STAT);
3147 } 3969 }
3148} 3970}
3149 3971
3150void 3972void
3151ev_stat_start (EV_P_ ev_stat *w) 3973ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3152{ 3974{
3153 if (expect_false (ev_is_active (w))) 3975 if (expect_false (ev_is_active (w)))
3154 return; 3976 return;
3155 3977
3156 ev_stat_stat (EV_A_ w); 3978 ev_stat_stat (EV_A_ w);
… …
3177 3999
3178 EV_FREQUENT_CHECK; 4000 EV_FREQUENT_CHECK;
3179} 4001}
3180 4002
3181void 4003void
3182ev_stat_stop (EV_P_ ev_stat *w) 4004ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3183{ 4005{
3184 clear_pending (EV_A_ (W)w); 4006 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4007 if (expect_false (!ev_is_active (w)))
3186 return; 4008 return;
3187 4009
… …
3203} 4025}
3204#endif 4026#endif
3205 4027
3206#if EV_IDLE_ENABLE 4028#if EV_IDLE_ENABLE
3207void 4029void
3208ev_idle_start (EV_P_ ev_idle *w) 4030ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3209{ 4031{
3210 if (expect_false (ev_is_active (w))) 4032 if (expect_false (ev_is_active (w)))
3211 return; 4033 return;
3212 4034
3213 pri_adjust (EV_A_ (W)w); 4035 pri_adjust (EV_A_ (W)w);
… …
3226 4048
3227 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
3228} 4050}
3229 4051
3230void 4052void
3231ev_idle_stop (EV_P_ ev_idle *w) 4053ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3232{ 4054{
3233 clear_pending (EV_A_ (W)w); 4055 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 4056 if (expect_false (!ev_is_active (w)))
3235 return; 4057 return;
3236 4058
… …
3248 4070
3249 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
3250} 4072}
3251#endif 4073#endif
3252 4074
4075#if EV_PREPARE_ENABLE
3253void 4076void
3254ev_prepare_start (EV_P_ ev_prepare *w) 4077ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3255{ 4078{
3256 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
3257 return; 4080 return;
3258 4081
3259 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
… …
3264 4087
3265 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3266} 4089}
3267 4090
3268void 4091void
3269ev_prepare_stop (EV_P_ ev_prepare *w) 4092ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3270{ 4093{
3271 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
3272 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
3273 return; 4096 return;
3274 4097
… …
3283 4106
3284 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
3285 4108
3286 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
3287} 4110}
4111#endif
3288 4112
4113#if EV_CHECK_ENABLE
3289void 4114void
3290ev_check_start (EV_P_ ev_check *w) 4115ev_check_start (EV_P_ ev_check *w) EV_THROW
3291{ 4116{
3292 if (expect_false (ev_is_active (w))) 4117 if (expect_false (ev_is_active (w)))
3293 return; 4118 return;
3294 4119
3295 EV_FREQUENT_CHECK; 4120 EV_FREQUENT_CHECK;
… …
3300 4125
3301 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
3302} 4127}
3303 4128
3304void 4129void
3305ev_check_stop (EV_P_ ev_check *w) 4130ev_check_stop (EV_P_ ev_check *w) EV_THROW
3306{ 4131{
3307 clear_pending (EV_A_ (W)w); 4132 clear_pending (EV_A_ (W)w);
3308 if (expect_false (!ev_is_active (w))) 4133 if (expect_false (!ev_is_active (w)))
3309 return; 4134 return;
3310 4135
… …
3319 4144
3320 ev_stop (EV_A_ (W)w); 4145 ev_stop (EV_A_ (W)w);
3321 4146
3322 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
3323} 4148}
4149#endif
3324 4150
3325#if EV_EMBED_ENABLE 4151#if EV_EMBED_ENABLE
3326void noinline 4152void noinline
3327ev_embed_sweep (EV_P_ ev_embed *w) 4153ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3328{ 4154{
3329 ev_loop (w->other, EVLOOP_NONBLOCK); 4155 ev_run (w->other, EVRUN_NOWAIT);
3330} 4156}
3331 4157
3332static void 4158static void
3333embed_io_cb (EV_P_ ev_io *io, int revents) 4159embed_io_cb (EV_P_ ev_io *io, int revents)
3334{ 4160{
3335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3336 4162
3337 if (ev_cb (w)) 4163 if (ev_cb (w))
3338 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4164 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3339 else 4165 else
3340 ev_loop (w->other, EVLOOP_NONBLOCK); 4166 ev_run (w->other, EVRUN_NOWAIT);
3341} 4167}
3342 4168
3343static void 4169static void
3344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4170embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3345{ 4171{
… …
3349 EV_P = w->other; 4175 EV_P = w->other;
3350 4176
3351 while (fdchangecnt) 4177 while (fdchangecnt)
3352 { 4178 {
3353 fd_reify (EV_A); 4179 fd_reify (EV_A);
3354 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4180 ev_run (EV_A_ EVRUN_NOWAIT);
3355 } 4181 }
3356 } 4182 }
3357} 4183}
3358 4184
3359static void 4185static void
… …
3365 4191
3366 { 4192 {
3367 EV_P = w->other; 4193 EV_P = w->other;
3368 4194
3369 ev_loop_fork (EV_A); 4195 ev_loop_fork (EV_A);
3370 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4196 ev_run (EV_A_ EVRUN_NOWAIT);
3371 } 4197 }
3372 4198
3373 ev_embed_start (EV_A_ w); 4199 ev_embed_start (EV_A_ w);
3374} 4200}
3375 4201
… …
3380 ev_idle_stop (EV_A_ idle); 4206 ev_idle_stop (EV_A_ idle);
3381} 4207}
3382#endif 4208#endif
3383 4209
3384void 4210void
3385ev_embed_start (EV_P_ ev_embed *w) 4211ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3386{ 4212{
3387 if (expect_false (ev_is_active (w))) 4213 if (expect_false (ev_is_active (w)))
3388 return; 4214 return;
3389 4215
3390 { 4216 {
… …
3411 4237
3412 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
3413} 4239}
3414 4240
3415void 4241void
3416ev_embed_stop (EV_P_ ev_embed *w) 4242ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3417{ 4243{
3418 clear_pending (EV_A_ (W)w); 4244 clear_pending (EV_A_ (W)w);
3419 if (expect_false (!ev_is_active (w))) 4245 if (expect_false (!ev_is_active (w)))
3420 return; 4246 return;
3421 4247
… …
3423 4249
3424 ev_io_stop (EV_A_ &w->io); 4250 ev_io_stop (EV_A_ &w->io);
3425 ev_prepare_stop (EV_A_ &w->prepare); 4251 ev_prepare_stop (EV_A_ &w->prepare);
3426 ev_fork_stop (EV_A_ &w->fork); 4252 ev_fork_stop (EV_A_ &w->fork);
3427 4253
4254 ev_stop (EV_A_ (W)w);
4255
3428 EV_FREQUENT_CHECK; 4256 EV_FREQUENT_CHECK;
3429} 4257}
3430#endif 4258#endif
3431 4259
3432#if EV_FORK_ENABLE 4260#if EV_FORK_ENABLE
3433void 4261void
3434ev_fork_start (EV_P_ ev_fork *w) 4262ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3435{ 4263{
3436 if (expect_false (ev_is_active (w))) 4264 if (expect_false (ev_is_active (w)))
3437 return; 4265 return;
3438 4266
3439 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
… …
3444 4272
3445 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
3446} 4274}
3447 4275
3448void 4276void
3449ev_fork_stop (EV_P_ ev_fork *w) 4277ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3450{ 4278{
3451 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
3452 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
3453 return; 4281 return;
3454 4282
… …
3465 4293
3466 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3467} 4295}
3468#endif 4296#endif
3469 4297
4298#if EV_CLEANUP_ENABLE
4299void
4300ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4301{
4302 if (expect_false (ev_is_active (w)))
4303 return;
4304
4305 EV_FREQUENT_CHECK;
4306
4307 ev_start (EV_A_ (W)w, ++cleanupcnt);
4308 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4309 cleanups [cleanupcnt - 1] = w;
4310
4311 /* cleanup watchers should never keep a refcount on the loop */
4312 ev_unref (EV_A);
4313 EV_FREQUENT_CHECK;
4314}
4315
4316void
4317ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4318{
4319 clear_pending (EV_A_ (W)w);
4320 if (expect_false (!ev_is_active (w)))
4321 return;
4322
4323 EV_FREQUENT_CHECK;
4324 ev_ref (EV_A);
4325
4326 {
4327 int active = ev_active (w);
4328
4329 cleanups [active - 1] = cleanups [--cleanupcnt];
4330 ev_active (cleanups [active - 1]) = active;
4331 }
4332
4333 ev_stop (EV_A_ (W)w);
4334
4335 EV_FREQUENT_CHECK;
4336}
4337#endif
4338
3470#if EV_ASYNC_ENABLE 4339#if EV_ASYNC_ENABLE
3471void 4340void
3472ev_async_start (EV_P_ ev_async *w) 4341ev_async_start (EV_P_ ev_async *w) EV_THROW
3473{ 4342{
3474 if (expect_false (ev_is_active (w))) 4343 if (expect_false (ev_is_active (w)))
3475 return; 4344 return;
4345
4346 w->sent = 0;
3476 4347
3477 evpipe_init (EV_A); 4348 evpipe_init (EV_A);
3478 4349
3479 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3480 4351
… …
3484 4355
3485 EV_FREQUENT_CHECK; 4356 EV_FREQUENT_CHECK;
3486} 4357}
3487 4358
3488void 4359void
3489ev_async_stop (EV_P_ ev_async *w) 4360ev_async_stop (EV_P_ ev_async *w) EV_THROW
3490{ 4361{
3491 clear_pending (EV_A_ (W)w); 4362 clear_pending (EV_A_ (W)w);
3492 if (expect_false (!ev_is_active (w))) 4363 if (expect_false (!ev_is_active (w)))
3493 return; 4364 return;
3494 4365
… …
3505 4376
3506 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3507} 4378}
3508 4379
3509void 4380void
3510ev_async_send (EV_P_ ev_async *w) 4381ev_async_send (EV_P_ ev_async *w) EV_THROW
3511{ 4382{
3512 w->sent = 1; 4383 w->sent = 1;
3513 evpipe_write (EV_A_ &async_pending); 4384 evpipe_write (EV_A_ &async_pending);
3514} 4385}
3515#endif 4386#endif
… …
3552 4423
3553 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4424 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3554} 4425}
3555 4426
3556void 4427void
3557ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4428ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3558{ 4429{
3559 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4430 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3560 4431
3561 if (expect_false (!once)) 4432 if (expect_false (!once))
3562 { 4433 {
3563 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4434 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3564 return; 4435 return;
3565 } 4436 }
3566 4437
3567 once->cb = cb; 4438 once->cb = cb;
3568 once->arg = arg; 4439 once->arg = arg;
… …
3583} 4454}
3584 4455
3585/*****************************************************************************/ 4456/*****************************************************************************/
3586 4457
3587#if EV_WALK_ENABLE 4458#if EV_WALK_ENABLE
3588void 4459void ecb_cold
3589ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4460ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3590{ 4461{
3591 int i, j; 4462 int i, j;
3592 ev_watcher_list *wl, *wn; 4463 ev_watcher_list *wl, *wn;
3593 4464
3594 if (types & (EV_IO | EV_EMBED)) 4465 if (types & (EV_IO | EV_EMBED))
… …
3637 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4508 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3638#endif 4509#endif
3639 4510
3640#if EV_IDLE_ENABLE 4511#if EV_IDLE_ENABLE
3641 if (types & EV_IDLE) 4512 if (types & EV_IDLE)
3642 for (j = NUMPRI; i--; ) 4513 for (j = NUMPRI; j--; )
3643 for (i = idlecnt [j]; i--; ) 4514 for (i = idlecnt [j]; i--; )
3644 cb (EV_A_ EV_IDLE, idles [j][i]); 4515 cb (EV_A_ EV_IDLE, idles [j][i]);
3645#endif 4516#endif
3646 4517
3647#if EV_FORK_ENABLE 4518#if EV_FORK_ENABLE
… …
3655 if (types & EV_ASYNC) 4526 if (types & EV_ASYNC)
3656 for (i = asynccnt; i--; ) 4527 for (i = asynccnt; i--; )
3657 cb (EV_A_ EV_ASYNC, asyncs [i]); 4528 cb (EV_A_ EV_ASYNC, asyncs [i]);
3658#endif 4529#endif
3659 4530
4531#if EV_PREPARE_ENABLE
3660 if (types & EV_PREPARE) 4532 if (types & EV_PREPARE)
3661 for (i = preparecnt; i--; ) 4533 for (i = preparecnt; i--; )
3662#if EV_EMBED_ENABLE 4534# if EV_EMBED_ENABLE
3663 if (ev_cb (prepares [i]) != embed_prepare_cb) 4535 if (ev_cb (prepares [i]) != embed_prepare_cb)
3664#endif 4536# endif
3665 cb (EV_A_ EV_PREPARE, prepares [i]); 4537 cb (EV_A_ EV_PREPARE, prepares [i]);
4538#endif
3666 4539
4540#if EV_CHECK_ENABLE
3667 if (types & EV_CHECK) 4541 if (types & EV_CHECK)
3668 for (i = checkcnt; i--; ) 4542 for (i = checkcnt; i--; )
3669 cb (EV_A_ EV_CHECK, checks [i]); 4543 cb (EV_A_ EV_CHECK, checks [i]);
4544#endif
3670 4545
4546#if EV_SIGNAL_ENABLE
3671 if (types & EV_SIGNAL) 4547 if (types & EV_SIGNAL)
3672 for (i = 0; i < EV_NSIG - 1; ++i) 4548 for (i = 0; i < EV_NSIG - 1; ++i)
3673 for (wl = signals [i].head; wl; ) 4549 for (wl = signals [i].head; wl; )
3674 { 4550 {
3675 wn = wl->next; 4551 wn = wl->next;
3676 cb (EV_A_ EV_SIGNAL, wl); 4552 cb (EV_A_ EV_SIGNAL, wl);
3677 wl = wn; 4553 wl = wn;
3678 } 4554 }
4555#endif
3679 4556
4557#if EV_CHILD_ENABLE
3680 if (types & EV_CHILD) 4558 if (types & EV_CHILD)
3681 for (i = EV_PID_HASHSIZE; i--; ) 4559 for (i = (EV_PID_HASHSIZE); i--; )
3682 for (wl = childs [i]; wl; ) 4560 for (wl = childs [i]; wl; )
3683 { 4561 {
3684 wn = wl->next; 4562 wn = wl->next;
3685 cb (EV_A_ EV_CHILD, wl); 4563 cb (EV_A_ EV_CHILD, wl);
3686 wl = wn; 4564 wl = wn;
3687 } 4565 }
4566#endif
3688/* EV_STAT 0x00001000 /* stat data changed */ 4567/* EV_STAT 0x00001000 /* stat data changed */
3689/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4568/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3690} 4569}
3691#endif 4570#endif
3692 4571
3693#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
3694 #include "ev_wrap.h" 4573 #include "ev_wrap.h"
3695#endif 4574#endif
3696 4575
3697#ifdef __cplusplus
3698}
3699#endif
3700

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