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Comparing libev/ev.c (file contents):
Revision 1.322 by root, Thu Jan 7 06:49:31 2010 UTC vs.
Revision 1.440 by root, Tue May 29 21:37:14 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
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
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
… …
344# endif 373# endif
345#endif 374#endif
346 375
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
349#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
352#endif 387#endif
353 388
… …
360# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
362#endif 397#endif
363 398
364#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 402# include <sys/select.h>
367# endif 403# endif
368#endif 404#endif
369 405
370#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 407# include <sys/statfs.h>
373# include <sys/inotify.h> 408# include <sys/inotify.h>
374/* 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 */
375# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
378# endif 413# endif
379#endif
380
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif 414#endif
384 415
385#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
386/* 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 */
387# include <stdint.h> 418# include <stdint.h>
… …
393# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
394# else 425# else
395# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
396# endif 427# endif
397# endif 428# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 430#endif
406 431
407#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
408/* 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 */
409# include <stdint.h> 434# include <stdint.h>
… …
415# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
416# else 441# else
417# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
418# endif 443# endif
419# endif 444# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
424 446
425struct signalfd_siginfo 447struct signalfd_siginfo
426{ 448{
427 uint32_t ssi_signo; 449 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
429}; 451};
430# ifdef __cplusplus
431}
432# endif 452#endif
433#endif
434
435 453
436/**/ 454/**/
437 455
438#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 458#else
441# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
442#endif 460#endif
443 461
444/* 462/*
445 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 465 */
452#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 */
453 468
454#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) */
455#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) */
456 471
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;
457#if __GNUC__ >= 4 519 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
459# 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;
460#else 536#else
461# define expect(expr,value) (expr) 537 #include <inttypes.h>
462# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
464# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
465# 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)))
466#endif 557 #endif
558#endif
467 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573 #define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32
632 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
639 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync ()
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
652 #endif
653#endif
654
655#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS
657 /*
658 * if you get undefined symbol references to pthread_mutex_lock,
659 * or failure to find pthread.h, then you should implement
660 * the ECB_MEMORY_FENCE operations for your cpu/compiler
661 * OR provide pthread.h and link against the posix thread library
662 * of your system.
663 */
664 #include <pthread.h>
665 #define ECB_NEEDS_PTHREADS 1
666 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
667
668 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
669 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
670 #endif
671#endif
672
673#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
674 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
675#endif
676
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif
680
681/*****************************************************************************/
682
683#if __cplusplus
684 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__
687#elif ECB_C99
688 #define ecb_inline static inline
689#else
690 #define ecb_inline static
691#endif
692
693#if ECB_GCC_VERSION(3,3)
694 #define ecb_restrict __restrict__
695#elif ECB_C99
696 #define ecb_restrict restrict
697#else
698 #define ecb_restrict
699#endif
700
701typedef int ecb_bool;
702
703#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
707
708#define ecb_function_ ecb_inline
709
710#if ECB_GCC_VERSION(3,1)
711 #define ecb_attribute(attrlist) __attribute__(attrlist)
712 #define ecb_is_constant(expr) __builtin_constant_p (expr)
713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality)
720#endif
721
722/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5)
724 #define ecb_decltype(x) __decltype(x)
725#elif ECB_GCC_VERSION(3,0)
726 #define ecb_decltype(x) __typeof(x)
727#endif
728
729#define ecb_noinline ecb_attribute ((__noinline__))
730#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__))
733
734#if ECB_C11
735 #define ecb_noreturn _Noreturn
736#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif
739
740#if ECB_GCC_VERSION(4,3)
741 #define ecb_artificial ecb_attribute ((__artificial__))
742 #define ecb_hot ecb_attribute ((__hot__))
743 #define ecb_cold ecb_attribute ((__cold__))
744#else
745 #define ecb_artificial
746 #define ecb_hot
747 #define ecb_cold
748#endif
749
750/* put around conditional expressions if you are very sure that the */
751/* expression is mostly true or mostly false. note that these return */
752/* booleans, not the expression. */
468#define expect_false(expr) expect ((expr) != 0, 0) 753#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
469#define expect_true(expr) expect ((expr) != 0, 1) 754#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
755/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr)
758
759/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4)
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */
768#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
770 ecb_function_ int
771 ecb_ctz32 (uint32_t x)
772 {
773 int r = 0;
774
775 x &= ~x + 1; /* this isolates the lowest bit */
776
777#if ECB_branchless_on_i386
778 r += !!(x & 0xaaaaaaaa) << 0;
779 r += !!(x & 0xcccccccc) << 1;
780 r += !!(x & 0xf0f0f0f0) << 2;
781 r += !!(x & 0xff00ff00) << 3;
782 r += !!(x & 0xffff0000) << 4;
783#else
784 if (x & 0xaaaaaaaa) r += 1;
785 if (x & 0xcccccccc) r += 2;
786 if (x & 0xf0f0f0f0) r += 4;
787 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16;
789#endif
790
791 return r;
792 }
793
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
795 ecb_function_ int
796 ecb_ctz64 (uint64_t x)
797 {
798 int shift = x & 0xffffffffU ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift;
800 }
801
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
803 ecb_function_ int
804 ecb_popcount32 (uint32_t x)
805 {
806 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101;
810
811 return x >> 24;
812 }
813
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
815 ecb_function_ int ecb_ld32 (uint32_t x)
816 {
817 int r = 0;
818
819 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; }
824
825 return r;
826 }
827
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
829 ecb_function_ int ecb_ld64 (uint64_t x)
830 {
831 int r = 0;
832
833 if (x >> 32) { x >>= 32; r += 32; }
834
835 return r + ecb_ld32 (x);
836 }
837#endif
838
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
846{
847 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849}
850
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
853{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8);
858
859 return x;
860}
861
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
864{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
869 x = ( x >> 16 ) | ( x << 16);
870
871 return x;
872}
873
874/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
877ecb_function_ int
878ecb_popcount64 (uint64_t x)
879{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881}
882
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
891
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
903 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (x)
905#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
907 ecb_function_ uint16_t
908 ecb_bswap16 (uint16_t x)
909 {
910 return ecb_rotl16 (x, 8);
911 }
912
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
914 ecb_function_ uint32_t
915 ecb_bswap32 (uint32_t x)
916 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 }
919
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
921 ecb_function_ uint64_t
922 ecb_bswap64 (uint64_t x)
923 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 }
926#endif
927
928#if ECB_GCC_VERSION(4,5)
929 #define ecb_unreachable() __builtin_unreachable ()
930#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn;
933 ecb_inline void ecb_unreachable (void) { }
934#endif
935
936/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
938
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
940ecb_inline unsigned char
941ecb_byteorder_helper (void)
942{
943 const uint32_t u = 0x11223344;
944 return *(unsigned char *)&u;
945}
946
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
951
952#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif
957
958#if __cplusplus
959 template<typename T>
960 static inline T ecb_div_rd (T val, T div)
961 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 }
964 template<typename T>
965 static inline T ecb_div_ru (T val, T div)
966 {
967 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
968 }
969#else
970 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
971 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
972#endif
973
974#if ecb_cplusplus_does_not_suck
975 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
976 template<typename T, int N>
977 static inline int ecb_array_length (const T (&arr)[N])
978 {
979 return N;
980 }
981#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif
984
985#endif
986
987/* ECB.H END */
988
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
993 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences.
996 */
997# error "memory fences not defined for your architecture, please report"
998#endif
999
1000#ifndef ECB_MEMORY_FENCE
1001# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif
1005
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
470#define inline_size static inline 1010#define inline_size ecb_inline
471 1011
472#if EV_MINIMAL 1012#if EV_FEATURE_CODE
1013# define inline_speed ecb_inline
1014#else
473# define inline_speed static noinline 1015# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 1016#endif
477 1017
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1019
480#if EV_MINPRI == EV_MAXPRI 1020#if EV_MINPRI == EV_MAXPRI
… …
493#define ev_active(w) ((W)(w))->active 1033#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1034#define ev_at(w) ((WT)(w))->at
495 1035
496#if EV_USE_REALTIME 1036#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1037/* sig_atomic_t is used to avoid per-thread variables or locking but still */
498/* giving it a reasonably high chance of working on typical architetcures */ 1038/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1039static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1040#endif
501 1041
502#if EV_USE_MONOTONIC 1042#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1043static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
517# include "ev_win32.c" 1057# include "ev_win32.c"
518#endif 1058#endif
519 1059
520/*****************************************************************************/ 1060/*****************************************************************************/
521 1061
1062/* define a suitable floor function (only used by periodics atm) */
1063
1064#if EV_USE_FLOOR
1065# include <math.h>
1066# define ev_floor(v) floor (v)
1067#else
1068
1069#include <float.h>
1070
1071/* a floor() replacement function, should be independent of ev_tstamp type */
1072static ev_tstamp noinline
1073ev_floor (ev_tstamp v)
1074{
1075 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1078#else
1079 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1080#endif
1081
1082 /* argument too large for an unsigned long? */
1083 if (expect_false (v >= shift))
1084 {
1085 ev_tstamp f;
1086
1087 if (v == v - 1.)
1088 return v; /* very large number */
1089
1090 f = shift * ev_floor (v * (1. / shift));
1091 return f + ev_floor (v - f);
1092 }
1093
1094 /* special treatment for negative args? */
1095 if (expect_false (v < 0.))
1096 {
1097 ev_tstamp f = -ev_floor (-v);
1098
1099 return f - (f == v ? 0 : 1);
1100 }
1101
1102 /* fits into an unsigned long */
1103 return (unsigned long)v;
1104}
1105
1106#endif
1107
1108/*****************************************************************************/
1109
1110#ifdef __linux
1111# include <sys/utsname.h>
1112#endif
1113
1114static unsigned int noinline ecb_cold
1115ev_linux_version (void)
1116{
1117#ifdef __linux
1118 unsigned int v = 0;
1119 struct utsname buf;
1120 int i;
1121 char *p = buf.release;
1122
1123 if (uname (&buf))
1124 return 0;
1125
1126 for (i = 3+1; --i; )
1127 {
1128 unsigned int c = 0;
1129
1130 for (;;)
1131 {
1132 if (*p >= '0' && *p <= '9')
1133 c = c * 10 + *p++ - '0';
1134 else
1135 {
1136 p += *p == '.';
1137 break;
1138 }
1139 }
1140
1141 v = (v << 8) | c;
1142 }
1143
1144 return v;
1145#else
1146 return 0;
1147#endif
1148}
1149
1150/*****************************************************************************/
1151
1152#if EV_AVOID_STDIO
1153static void noinline ecb_cold
1154ev_printerr (const char *msg)
1155{
1156 write (STDERR_FILENO, msg, strlen (msg));
1157}
1158#endif
1159
522static void (*syserr_cb)(const char *msg); 1160static void (*syserr_cb)(const char *msg) EV_THROW;
523 1161
524void 1162void ecb_cold
525ev_set_syserr_cb (void (*cb)(const char *msg)) 1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
526{ 1164{
527 syserr_cb = cb; 1165 syserr_cb = cb;
528} 1166}
529 1167
530static void noinline 1168static void noinline ecb_cold
531ev_syserr (const char *msg) 1169ev_syserr (const char *msg)
532{ 1170{
533 if (!msg) 1171 if (!msg)
534 msg = "(libev) system error"; 1172 msg = "(libev) system error";
535 1173
536 if (syserr_cb) 1174 if (syserr_cb)
537 syserr_cb (msg); 1175 syserr_cb (msg);
538 else 1176 else
539 { 1177 {
1178#if EV_AVOID_STDIO
1179 ev_printerr (msg);
1180 ev_printerr (": ");
1181 ev_printerr (strerror (errno));
1182 ev_printerr ("\n");
1183#else
540 perror (msg); 1184 perror (msg);
1185#endif
541 abort (); 1186 abort ();
542 } 1187 }
543} 1188}
544 1189
545static void * 1190static void *
546ev_realloc_emul (void *ptr, long size) 1191ev_realloc_emul (void *ptr, long size) EV_THROW
547{ 1192{
1193#if __GLIBC__
1194 return realloc (ptr, size);
1195#else
548 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
551 */ 1199 */
552 1200
553 if (size) 1201 if (size)
554 return realloc (ptr, size); 1202 return realloc (ptr, size);
555 1203
556 free (ptr); 1204 free (ptr);
557 return 0; 1205 return 0;
1206#endif
558} 1207}
559 1208
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
561 1210
562void 1211void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
564{ 1213{
565 alloc = cb; 1214 alloc = cb;
566} 1215}
567 1216
568inline_speed void * 1217inline_speed void *
… …
570{ 1219{
571 ptr = alloc (ptr, size); 1220 ptr = alloc (ptr, size);
572 1221
573 if (!ptr && size) 1222 if (!ptr && size)
574 { 1223 {
1224#if EV_AVOID_STDIO
1225 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1226#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1227 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1228#endif
576 abort (); 1229 abort ();
577 } 1230 }
578 1231
579 return ptr; 1232 return ptr;
580} 1233}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1249 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 1250 unsigned char unused;
598#if EV_USE_EPOLL 1251#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1252 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1253#endif
601#if EV_SELECT_IS_WINSOCKET 1254#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1255 SOCKET handle;
1256#endif
1257#if EV_USE_IOCP
1258 OVERLAPPED or, ow;
603#endif 1259#endif
604} ANFD; 1260} ANFD;
605 1261
606/* stores the pending event set for a given watcher */ 1262/* stores the pending event set for a given watcher */
607typedef struct 1263typedef struct
… …
649 #undef VAR 1305 #undef VAR
650 }; 1306 };
651 #include "ev_wrap.h" 1307 #include "ev_wrap.h"
652 1308
653 static struct ev_loop default_loop_struct; 1309 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 1311
656#else 1312#else
657 1313
658 ev_tstamp ev_rt_now; 1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 1315 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 1316 #include "ev_vars.h"
661 #undef VAR 1317 #undef VAR
662 1318
663 static int ev_default_loop_ptr; 1319 static int ev_default_loop_ptr;
664 1320
665#endif 1321#endif
666 1322
667#if EV_MINIMAL < 2 1323#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1324# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1325# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 1326# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 1327#else
672# define EV_RELEASE_CB (void)0 1328# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 1329# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1330# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 1331#endif
676 1332
677#define EVUNLOOP_RECURSE 0x80 1333#define EVBREAK_RECURSE 0x80
678 1334
679/*****************************************************************************/ 1335/*****************************************************************************/
680 1336
681#ifndef EV_HAVE_EV_TIME 1337#ifndef EV_HAVE_EV_TIME
682ev_tstamp 1338ev_tstamp
683ev_time (void) 1339ev_time (void) EV_THROW
684{ 1340{
685#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
687 { 1343 {
688 struct timespec ts; 1344 struct timespec ts;
… …
712 return ev_time (); 1368 return ev_time ();
713} 1369}
714 1370
715#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
716ev_tstamp 1372ev_tstamp
717ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
718{ 1374{
719 return ev_rt_now; 1375 return ev_rt_now;
720} 1376}
721#endif 1377#endif
722 1378
723void 1379void
724ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
725{ 1381{
726 if (delay > 0.) 1382 if (delay > 0.)
727 { 1383 {
728#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
729 struct timespec ts; 1385 struct timespec ts;
730 1386
731 ts.tv_sec = (time_t)delay; 1387 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
735#elif defined(_WIN32) 1389#elif defined _WIN32
736 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
737#else 1391#else
738 struct timeval tv; 1392 struct timeval tv;
739 1393
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 1395 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 1396 /* by older ones */
1397 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 1398 select (0, 0, 0, 0, &tv);
747#endif 1399#endif
748 } 1400 }
749} 1401}
750 1402
751/*****************************************************************************/ 1403/*****************************************************************************/
752 1404
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1405#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 1406
755/* find a suitable new size for the given array, */ 1407/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 1408/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 1409inline_size int
758array_nextsize (int elem, int cur, int cnt) 1410array_nextsize (int elem, int cur, int cnt)
759{ 1411{
760 int ncur = cur + 1; 1412 int ncur = cur + 1;
761 1413
762 do 1414 do
763 ncur <<= 1; 1415 ncur <<= 1;
764 while (cnt > ncur); 1416 while (cnt > ncur);
765 1417
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1418 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 1420 {
769 ncur *= elem; 1421 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1422 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
… …
773 } 1425 }
774 1426
775 return ncur; 1427 return ncur;
776} 1428}
777 1429
778static noinline void * 1430static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 1431array_realloc (int elem, void *base, int *cur, int cnt)
780{ 1432{
781 *cur = array_nextsize (elem, *cur, cnt); 1433 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 1434 return ev_realloc (base, elem * *cur);
783} 1435}
… …
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
787 1439
788#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
790 { \ 1442 { \
791 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
795 } 1447 }
796 1448
… …
814pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 1467{
816} 1468}
817 1469
818void noinline 1470void noinline
819ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
820{ 1472{
821 W w_ = (W)w; 1473 W w_ = (W)w;
822 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
823 1475
824 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
… …
828 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
830 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
832 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
833} 1487}
834 1488
835inline_speed void 1489inline_speed void
836feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
837{ 1491{
… …
857} 1511}
858 1512
859/*****************************************************************************/ 1513/*****************************************************************************/
860 1514
861inline_speed void 1515inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1516fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1517{
864 ANFD *anfd = anfds + fd; 1518 ANFD *anfd = anfds + fd;
865 ev_io *w; 1519 ev_io *w;
866 1520
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1521 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1533fd_event (EV_P_ int fd, int revents)
880{ 1534{
881 ANFD *anfd = anfds + fd; 1535 ANFD *anfd = anfds + fd;
882 1536
883 if (expect_true (!anfd->reify)) 1537 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1538 fd_event_nocheck (EV_A_ fd, revents);
885} 1539}
886 1540
887void 1541void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
889{ 1543{
890 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
892} 1546}
893 1547
894/* make sure the external fd watch events are in-sync */ 1548/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1549/* with the kernel/libev internal state */
896inline_size void 1550inline_size void
897fd_reify (EV_P) 1551fd_reify (EV_P)
898{ 1552{
899 int i; 1553 int i;
900 1554
1555#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1556 for (i = 0; i < fdchangecnt; ++i)
1557 {
1558 int fd = fdchanges [i];
1559 ANFD *anfd = anfds + fd;
1560
1561 if (anfd->reify & EV__IOFDSET && anfd->head)
1562 {
1563 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1564
1565 if (handle != anfd->handle)
1566 {
1567 unsigned long arg;
1568
1569 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1570
1571 /* handle changed, but fd didn't - we need to do it in two steps */
1572 backend_modify (EV_A_ fd, anfd->events, 0);
1573 anfd->events = 0;
1574 anfd->handle = handle;
1575 }
1576 }
1577 }
1578#endif
1579
901 for (i = 0; i < fdchangecnt; ++i) 1580 for (i = 0; i < fdchangecnt; ++i)
902 { 1581 {
903 int fd = fdchanges [i]; 1582 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1583 ANFD *anfd = anfds + fd;
905 ev_io *w; 1584 ev_io *w;
906 1585
907 unsigned char events = 0; 1586 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify;
908 1588
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1589 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1590
912#if EV_SELECT_IS_WINSOCKET 1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1592 {
915 unsigned long arg; 1593 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1594
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1596 anfd->events |= (unsigned char)w->events;
1597
1598 if (o_events != anfd->events)
1599 o_reify = EV__IOFDSET; /* actually |= */
918 } 1600 }
919#endif
920 1601
921 { 1602 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 1603 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1604 }
932 1605
933 fdchangecnt = 0; 1606 fdchangecnt = 0;
934} 1607}
935 1608
… …
947 fdchanges [fdchangecnt - 1] = fd; 1620 fdchanges [fdchangecnt - 1] = fd;
948 } 1621 }
949} 1622}
950 1623
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1625inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1626fd_kill (EV_P_ int fd)
954{ 1627{
955 ev_io *w; 1628 ev_io *w;
956 1629
957 while ((w = (ev_io *)anfds [fd].head)) 1630 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1632 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1634 }
962} 1635}
963 1636
964/* check whether the given fd is atcually valid, for error recovery */ 1637/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1638inline_size int ecb_cold
966fd_valid (int fd) 1639fd_valid (int fd)
967{ 1640{
968#ifdef _WIN32 1641#ifdef _WIN32
969 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1643#else
971 return fcntl (fd, F_GETFD) != -1; 1644 return fcntl (fd, F_GETFD) != -1;
972#endif 1645#endif
973} 1646}
974 1647
975/* called on EBADF to verify fds */ 1648/* called on EBADF to verify fds */
976static void noinline 1649static void noinline ecb_cold
977fd_ebadf (EV_P) 1650fd_ebadf (EV_P)
978{ 1651{
979 int fd; 1652 int fd;
980 1653
981 for (fd = 0; fd < anfdmax; ++fd) 1654 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 1656 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 1657 fd_kill (EV_A_ fd);
985} 1658}
986 1659
987/* called on ENOMEM in select/poll to kill some fds and retry */ 1660/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 1661static void noinline ecb_cold
989fd_enomem (EV_P) 1662fd_enomem (EV_P)
990{ 1663{
991 int fd; 1664 int fd;
992 1665
993 for (fd = anfdmax; fd--; ) 1666 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 1684 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1685 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 1686 }
1014} 1687}
1015 1688
1689/* used to prepare libev internal fd's */
1690/* this is not fork-safe */
1691inline_speed void
1692fd_intern (int fd)
1693{
1694#ifdef _WIN32
1695 unsigned long arg = 1;
1696 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1697#else
1698 fcntl (fd, F_SETFD, FD_CLOEXEC);
1699 fcntl (fd, F_SETFL, O_NONBLOCK);
1700#endif
1701}
1702
1016/*****************************************************************************/ 1703/*****************************************************************************/
1017 1704
1018/* 1705/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 1706 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1707 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 1708 * the branching factor of the d-tree.
1022 */ 1709 */
1023 1710
1024/* 1711/*
… …
1172 1859
1173static ANSIG signals [EV_NSIG - 1]; 1860static ANSIG signals [EV_NSIG - 1];
1174 1861
1175/*****************************************************************************/ 1862/*****************************************************************************/
1176 1863
1177/* used to prepare libev internal fd's */ 1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */
1179inline_speed void
1180fd_intern (int fd)
1181{
1182#ifdef _WIN32
1183 unsigned long arg = 1;
1184 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 1865
1191static void noinline 1866static void noinline ecb_cold
1192evpipe_init (EV_P) 1867evpipe_init (EV_P)
1193{ 1868{
1194 if (!ev_is_active (&pipe_w)) 1869 if (!ev_is_active (&pipe_w))
1195 { 1870 {
1196#if EV_USE_EVENTFD 1871# if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL) 1873 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0); 1874 evfd = eventfd (0, 0);
1200 1875
1201 if (evfd >= 0) 1876 if (evfd >= 0)
… …
1203 evpipe [0] = -1; 1878 evpipe [0] = -1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 1879 fd_intern (evfd); /* doing it twice doesn't hurt */
1205 ev_io_set (&pipe_w, evfd, EV_READ); 1880 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 1881 }
1207 else 1882 else
1208#endif 1883# endif
1209 { 1884 {
1210 while (pipe (evpipe)) 1885 while (pipe (evpipe))
1211 ev_syserr ("(libev) error creating signal/async pipe"); 1886 ev_syserr ("(libev) error creating signal/async pipe");
1212 1887
1213 fd_intern (evpipe [0]); 1888 fd_intern (evpipe [0]);
… …
1218 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 } 1895 }
1221} 1896}
1222 1897
1223inline_size void 1898inline_speed void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{ 1900{
1226 if (!*flag) 1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902
1903 if (expect_true (*flag))
1904 return;
1905
1906 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908
1909 pipe_write_skipped = 1;
1910
1911 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1912
1913 if (pipe_write_wanted)
1227 { 1914 {
1915 int old_errno;
1916
1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1919
1228 int old_errno = errno; /* save errno because write might clobber it */ 1920 old_errno = errno; /* save errno because write will clobber it */
1229
1230 *flag = 1;
1231 1921
1232#if EV_USE_EVENTFD 1922#if EV_USE_EVENTFD
1233 if (evfd >= 0) 1923 if (evfd >= 0)
1234 { 1924 {
1235 uint64_t counter = 1; 1925 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1237 } 1927 }
1238 else 1928 else
1239#endif 1929#endif
1930 {
1931#ifdef _WIN32
1932 WSABUF buf;
1933 DWORD sent;
1934 buf.buf = &buf;
1935 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else
1240 write (evpipe [1], &old_errno, 1); 1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1241 1941
1242 errno = old_errno; 1942 errno = old_errno;
1243 } 1943 }
1244} 1944}
1245 1945
… …
1248static void 1948static void
1249pipecb (EV_P_ ev_io *iow, int revents) 1949pipecb (EV_P_ ev_io *iow, int revents)
1250{ 1950{
1251 int i; 1951 int i;
1252 1952
1953 if (revents & EV_READ)
1954 {
1253#if EV_USE_EVENTFD 1955#if EV_USE_EVENTFD
1254 if (evfd >= 0) 1956 if (evfd >= 0)
1255 { 1957 {
1256 uint64_t counter; 1958 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1258 } 1960 }
1259 else 1961 else
1260#endif 1962#endif
1261 { 1963 {
1262 char dummy; 1964 char dummy[4];
1965#ifdef _WIN32
1966 WSABUF buf;
1967 DWORD recvd;
1968 DWORD flags = 0;
1969 buf.buf = dummy;
1970 buf.len = sizeof (dummy);
1971 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1972#else
1263 read (evpipe [0], &dummy, 1); 1973 read (evpipe [0], &dummy, sizeof (dummy));
1974#endif
1975 }
1264 } 1976 }
1265 1977
1978 pipe_write_skipped = 0;
1979
1980 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1981
1982#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 1983 if (sig_pending)
1267 { 1984 {
1268 sig_pending = 0; 1985 sig_pending = 0;
1986
1987 ECB_MEMORY_FENCE;
1269 1988
1270 for (i = EV_NSIG - 1; i--; ) 1989 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 1990 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1273 } 1992 }
1993#endif
1274 1994
1275#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1276 if (async_pending) 1996 if (async_pending)
1277 { 1997 {
1278 async_pending = 0; 1998 async_pending = 0;
1999
2000 ECB_MEMORY_FENCE;
1279 2001
1280 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1282 { 2004 {
1283 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2008 }
1286 } 2009 }
1287#endif 2010#endif
1288} 2011}
1289 2012
1290/*****************************************************************************/ 2013/*****************************************************************************/
1291 2014
2015void
2016ev_feed_signal (int signum) EV_THROW
2017{
2018#if EV_MULTIPLICITY
2019 EV_P = signals [signum - 1].loop;
2020
2021 if (!EV_A)
2022 return;
2023#endif
2024
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending);
2030}
2031
1292static void 2032static void
1293ev_sighandler (int signum) 2033ev_sighandler (int signum)
1294{ 2034{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#ifdef _WIN32 2035#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2036 signal (signum, ev_sighandler);
1301#endif 2037#endif
1302 2038
1303 signals [signum - 1].pending = 1; 2039 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2040}
1306 2041
1307void noinline 2042void noinline
1308ev_feed_signal_event (EV_P_ int signum) 2043ev_feed_signal_event (EV_P_ int signum) EV_THROW
1309{ 2044{
1310 WL w; 2045 WL w;
1311 2046
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2047 if (expect_false (signum <= 0 || signum > EV_NSIG))
1313 return; 2048 return;
… …
1321 if (expect_false (signals [signum].loop != EV_A)) 2056 if (expect_false (signals [signum].loop != EV_A))
1322 return; 2057 return;
1323#endif 2058#endif
1324 2059
1325 signals [signum].pending = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1326 2062
1327 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2065}
1330 2066
… …
1346 break; 2082 break;
1347 } 2083 }
1348} 2084}
1349#endif 2085#endif
1350 2086
2087#endif
2088
1351/*****************************************************************************/ 2089/*****************************************************************************/
1352 2090
2091#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2092static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2093
1357static ev_signal childev; 2094static ev_signal childev;
1358 2095
1359#ifndef WIFCONTINUED 2096#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2097# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2102child_reap (EV_P_ int chain, int pid, int status)
1366{ 2103{
1367 ev_child *w; 2104 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2105 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2106
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2107 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2108 {
1372 if ((w->pid == pid || !w->pid) 2109 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2110 && (!traced || (w->flags & 1)))
1374 { 2111 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2112 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 2137 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 2138 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2139 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2140
1404 child_reap (EV_A_ pid, pid, status); 2141 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2142 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2143 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2144}
1408 2145
1409#endif 2146#endif
1410 2147
1411/*****************************************************************************/ 2148/*****************************************************************************/
1412 2149
2150#if EV_USE_IOCP
2151# include "ev_iocp.c"
2152#endif
1413#if EV_USE_PORT 2153#if EV_USE_PORT
1414# include "ev_port.c" 2154# include "ev_port.c"
1415#endif 2155#endif
1416#if EV_USE_KQUEUE 2156#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2157# include "ev_kqueue.c"
… …
1424#endif 2164#endif
1425#if EV_USE_SELECT 2165#if EV_USE_SELECT
1426# include "ev_select.c" 2166# include "ev_select.c"
1427#endif 2167#endif
1428 2168
1429int 2169int ecb_cold
1430ev_version_major (void) 2170ev_version_major (void) EV_THROW
1431{ 2171{
1432 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1433} 2173}
1434 2174
1435int 2175int ecb_cold
1436ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1437{ 2177{
1438 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1439} 2179}
1440 2180
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2181/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2182int inline_size ecb_cold
1443enable_secure (void) 2183enable_secure (void)
1444{ 2184{
1445#ifdef _WIN32 2185#ifdef _WIN32
1446 return 0; 2186 return 0;
1447#else 2187#else
1448 return getuid () != geteuid () 2188 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2189 || getgid () != getegid ();
1450#endif 2190#endif
1451} 2191}
1452 2192
1453unsigned int 2193unsigned int ecb_cold
1454ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1455{ 2195{
1456 unsigned int flags = 0; 2196 unsigned int flags = 0;
1457 2197
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 2203
1464 return flags; 2204 return flags;
1465} 2205}
1466 2206
1467unsigned int 2207unsigned int ecb_cold
1468ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1469{ 2209{
1470 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1471 2211
1472#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 2217#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 2218 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2219 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2220 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 2221#endif
2222#ifdef __FreeBSD__
2223 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2224#endif
1482 2225
1483 return flags; 2226 return flags;
1484} 2227}
1485 2228
2229unsigned int ecb_cold
2230ev_embeddable_backends (void) EV_THROW
2231{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL;
2237
2238 return flags;
2239}
2240
1486unsigned int 2241unsigned int
1487ev_embeddable_backends (void) 2242ev_backend (EV_P) EV_THROW
1488{ 2243{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2244 return backend;
1490
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */
1493 flags &= ~EVBACKEND_EPOLL;
1494
1495 return flags;
1496} 2245}
1497 2246
2247#if EV_FEATURE_API
1498unsigned int 2248unsigned int
1499ev_backend (EV_P) 2249ev_iteration (EV_P) EV_THROW
1500{ 2250{
1501 return backend; 2251 return loop_count;
1502} 2252}
1503 2253
1504#if EV_MINIMAL < 2
1505unsigned int 2254unsigned int
1506ev_loop_count (EV_P) 2255ev_depth (EV_P) EV_THROW
1507{
1508 return loop_count;
1509}
1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{ 2256{
1514 return loop_depth; 2257 return loop_depth;
1515} 2258}
1516 2259
1517void 2260void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1519{ 2262{
1520 io_blocktime = interval; 2263 io_blocktime = interval;
1521} 2264}
1522 2265
1523void 2266void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2268{
1526 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1527} 2270}
1528 2271
1529void 2272void
1530ev_set_userdata (EV_P_ void *data) 2273ev_set_userdata (EV_P_ void *data) EV_THROW
1531{ 2274{
1532 userdata = data; 2275 userdata = data;
1533} 2276}
1534 2277
1535void * 2278void *
1536ev_userdata (EV_P) 2279ev_userdata (EV_P) EV_THROW
1537{ 2280{
1538 return userdata; 2281 return userdata;
1539} 2282}
1540 2283
2284void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1542{ 2286{
1543 invoke_cb = invoke_pending_cb; 2287 invoke_cb = invoke_pending_cb;
1544} 2288}
1545 2289
2290void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1547{ 2292{
1548 release_cb = release; 2293 release_cb = release;
1549 acquire_cb = acquire; 2294 acquire_cb = acquire;
1550} 2295}
1551#endif 2296#endif
1552 2297
1553/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1554static void noinline 2299static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1556{ 2301{
1557 if (!backend) 2302 if (!backend)
1558 { 2303 {
2304 origflags = flags;
2305
1559#if EV_USE_REALTIME 2306#if EV_USE_REALTIME
1560 if (!have_realtime) 2307 if (!have_realtime)
1561 { 2308 {
1562 struct timespec ts; 2309 struct timespec ts;
1563 2310
… …
1585 if (!(flags & EVFLAG_NOENV) 2332 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 2333 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 2334 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 2335 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 2336
1590 ev_rt_now = ev_time (); 2337 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 2338 mn_now = get_clock ();
1592 now_floor = mn_now; 2339 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 2340 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 2341#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 2342 invoke_cb = ev_invoke_pending;
1596#endif 2343#endif
1597 2344
1598 io_blocktime = 0.; 2345 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 2346 timeout_blocktime = 0.;
1600 backend = 0; 2347 backend = 0;
1601 backend_fd = -1; 2348 backend_fd = -1;
1602 sig_pending = 0; 2349 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 2350#if EV_ASYNC_ENABLE
1604 async_pending = 0; 2351 async_pending = 0;
1605#endif 2352#endif
2353 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0;
1606#if EV_USE_INOTIFY 2355#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 2357#endif
1609#if EV_USE_SIGNALFD 2358#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 2360#endif
1612 2361
1613 if (!(flags & 0x0000ffffU)) 2362 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 2363 flags |= ev_recommended_backends ();
1615 2364
2365#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif
1616#if EV_USE_PORT 2368#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 2370#endif
1619#if EV_USE_KQUEUE 2371#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2381 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 2382#endif
1631 2383
1632 ev_prepare_init (&pending_w, pendingcb); 2384 ev_prepare_init (&pending_w, pendingcb);
1633 2385
2386#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 2387 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 2388 ev_set_priority (&pipe_w, EV_MAXPRI);
2389#endif
1636 } 2390 }
1637} 2391}
1638 2392
1639/* free up a loop structure */ 2393/* free up a loop structure */
1640static void noinline 2394void ecb_cold
1641loop_destroy (EV_P) 2395ev_loop_destroy (EV_P)
1642{ 2396{
1643 int i; 2397 int i;
2398
2399#if EV_MULTIPLICITY
2400 /* mimic free (0) */
2401 if (!EV_A)
2402 return;
2403#endif
2404
2405#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt))
2408 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING;
2411 }
2412#endif
2413
2414#if EV_CHILD_ENABLE
2415 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2416 {
2417 ev_ref (EV_A); /* child watcher */
2418 ev_signal_stop (EV_A_ &childev);
2419 }
2420#endif
1644 2421
1645 if (ev_is_active (&pipe_w)) 2422 if (ev_is_active (&pipe_w))
1646 { 2423 {
1647 /*ev_ref (EV_A);*/ 2424 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 2425 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1670#endif 2447#endif
1671 2448
1672 if (backend_fd >= 0) 2449 if (backend_fd >= 0)
1673 close (backend_fd); 2450 close (backend_fd);
1674 2451
2452#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif
1675#if EV_USE_PORT 2455#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 2457#endif
1678#if EV_USE_KQUEUE 2458#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1706 array_free (periodic, EMPTY); 2486 array_free (periodic, EMPTY);
1707#endif 2487#endif
1708#if EV_FORK_ENABLE 2488#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 2489 array_free (fork, EMPTY);
1710#endif 2490#endif
2491#if EV_CLEANUP_ENABLE
2492 array_free (cleanup, EMPTY);
2493#endif
1711 array_free (prepare, EMPTY); 2494 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 2495 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 2496#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 2497 array_free (async, EMPTY);
1715#endif 2498#endif
1716 2499
1717 backend = 0; 2500 backend = 0;
2501
2502#if EV_MULTIPLICITY
2503 if (ev_is_default_loop (EV_A))
2504#endif
2505 ev_default_loop_ptr = 0;
2506#if EV_MULTIPLICITY
2507 else
2508 ev_free (EV_A);
2509#endif
1718} 2510}
1719 2511
1720#if EV_USE_INOTIFY 2512#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 2513inline_size void infy_fork (EV_P);
1722#endif 2514#endif
… …
1737 infy_fork (EV_A); 2529 infy_fork (EV_A);
1738#endif 2530#endif
1739 2531
1740 if (ev_is_active (&pipe_w)) 2532 if (ev_is_active (&pipe_w))
1741 { 2533 {
1742 /* this "locks" the handlers against writing to the pipe */ 2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1743 /* while we modify the fd vars */
1744 sig_pending = 1;
1745#if EV_ASYNC_ENABLE
1746 async_pending = 1;
1747#endif
1748 2535
1749 ev_ref (EV_A); 2536 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 2537 ev_io_stop (EV_A_ &pipe_w);
1751 2538
1752#if EV_USE_EVENTFD 2539#if EV_USE_EVENTFD
… …
1758 { 2545 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 2546 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]); 2547 EV_WIN32_CLOSE_FD (evpipe [1]);
1761 } 2548 }
1762 2549
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1763 evpipe_init (EV_A); 2551 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */ 2552 /* now iterate over everything, in case we missed something */
1765 pipecb (EV_A_ &pipe_w, EV_READ); 2553 pipecb (EV_A_ &pipe_w, EV_READ);
2554#endif
1766 } 2555 }
1767 2556
1768 postfork = 0; 2557 postfork = 0;
1769} 2558}
1770 2559
1771#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
1772 2561
1773struct ev_loop * 2562struct ev_loop * ecb_cold
1774ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
1775{ 2564{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 2566
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
1780 2569
1781 if (ev_backend (EV_A)) 2570 if (ev_backend (EV_A))
1782 return EV_A; 2571 return EV_A;
1783 2572
2573 ev_free (EV_A);
1784 return 0; 2574 return 0;
1785} 2575}
1786 2576
1787void
1788ev_loop_destroy (EV_P)
1789{
1790 loop_destroy (EV_A);
1791 ev_free (loop);
1792}
1793
1794void
1795ev_loop_fork (EV_P)
1796{
1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */ 2577#endif /* multiplicity */
1800 2578
1801#if EV_VERIFY 2579#if EV_VERIFY
1802static void noinline 2580static void noinline ecb_cold
1803verify_watcher (EV_P_ W w) 2581verify_watcher (EV_P_ W w)
1804{ 2582{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 2584
1807 if (w->pending) 2585 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 2587}
1810 2588
1811static void noinline 2589static void noinline ecb_cold
1812verify_heap (EV_P_ ANHE *heap, int N) 2590verify_heap (EV_P_ ANHE *heap, int N)
1813{ 2591{
1814 int i; 2592 int i;
1815 2593
1816 for (i = HEAP0; i < N + HEAP0; ++i) 2594 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 2599
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 2601 }
1824} 2602}
1825 2603
1826static void noinline 2604static void noinline ecb_cold
1827array_verify (EV_P_ W *ws, int cnt) 2605array_verify (EV_P_ W *ws, int cnt)
1828{ 2606{
1829 while (cnt--) 2607 while (cnt--)
1830 { 2608 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 2610 verify_watcher (EV_A_ ws [cnt]);
1833 } 2611 }
1834} 2612}
1835#endif 2613#endif
1836 2614
1837#if EV_MINIMAL < 2 2615#if EV_FEATURE_API
1838void 2616void ecb_cold
1839ev_loop_verify (EV_P) 2617ev_verify (EV_P) EV_THROW
1840{ 2618{
1841#if EV_VERIFY 2619#if EV_VERIFY
1842 int i; 2620 int i;
1843 WL w; 2621 WL w, w2;
1844 2622
1845 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
1846 2624
1847 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 2628
1851 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
1853 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 2635 {
1855 verify_watcher (EV_A_ (W)w); 2636 verify_watcher (EV_A_ (W)w);
2637
2638 if (j++ & 1)
2639 {
2640 assert (("libev: io watcher list contains a loop", w != w2));
2641 w2 = w2->next;
2642 }
2643
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2644 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2645 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 2646 }
2647 }
1859 2648
1860 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
1862 2651
1863#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 2667#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 2668 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 2669 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 2670#endif
1882 2671
2672#if EV_CLEANUP_ENABLE
2673 assert (cleanupmax >= cleanupcnt);
2674 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2675#endif
2676
1883#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 2678 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 2679 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 2680#endif
1887 2681
2682#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 2683 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 2684 array_verify (EV_A_ (W *)prepares, preparecnt);
2685#endif
1890 2686
2687#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 2688 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 2689 array_verify (EV_A_ (W *)checks, checkcnt);
2690#endif
1893 2691
1894# if 0 2692# if 0
2693#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2694 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2695 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2696#endif
1897# endif 2697# endif
1898#endif 2698#endif
1899} 2699}
1900#endif 2700#endif
1901 2701
1902#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
1903struct ev_loop * 2703struct ev_loop * ecb_cold
1904ev_default_loop_init (unsigned int flags)
1905#else 2704#else
1906int 2705int
2706#endif
1907ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
1908#endif
1909{ 2708{
1910 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
1911 { 2710 {
1912#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 2716
1918 loop_init (EV_A_ flags); 2717 loop_init (EV_A_ flags);
1919 2718
1920 if (ev_backend (EV_A)) 2719 if (ev_backend (EV_A))
1921 { 2720 {
1922#ifndef _WIN32 2721#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 2722 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 2723 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 2724 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2725 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 2726#endif
… …
1932 2731
1933 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
1934} 2733}
1935 2734
1936void 2735void
1937ev_default_destroy (void) 2736ev_loop_fork (EV_P) EV_THROW
1938{ 2737{
1939#if EV_MULTIPLICITY 2738 postfork = 1;
1940 EV_P = ev_default_loop_ptr;
1941#endif
1942
1943 ev_default_loop_ptr = 0;
1944
1945#ifndef _WIN32
1946 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev);
1948#endif
1949
1950 loop_destroy (EV_A);
1951}
1952
1953void
1954ev_default_fork (void)
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = ev_default_loop_ptr;
1958#endif
1959
1960 postfork = 1; /* must be in line with ev_loop_fork */
1961} 2739}
1962 2740
1963/*****************************************************************************/ 2741/*****************************************************************************/
1964 2742
1965void 2743void
… …
1967{ 2745{
1968 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
1969} 2747}
1970 2748
1971unsigned int 2749unsigned int
1972ev_pending_count (EV_P) 2750ev_pending_count (EV_P) EV_THROW
1973{ 2751{
1974 int pri; 2752 int pri;
1975 unsigned int count = 0; 2753 unsigned int count = 0;
1976 2754
1977 for (pri = NUMPRI; pri--; ) 2755 for (pri = NUMPRI; pri--; )
… …
1981} 2759}
1982 2760
1983void noinline 2761void noinline
1984ev_invoke_pending (EV_P) 2762ev_invoke_pending (EV_P)
1985{ 2763{
1986 int pri; 2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1987
1988 for (pri = NUMPRI; pri--; )
1989 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
1990 { 2766 {
1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1992
1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1995 2768
1996 p->w->pending = 0; 2769 p->w->pending = 0;
1997 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
1998 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
1999 } 2772 }
… …
2056 EV_FREQUENT_CHECK; 2829 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 2830 feed_reverse (EV_A_ (W)w);
2058 } 2831 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2832 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 2833
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 2834 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 2835 }
2063} 2836}
2064 2837
2065#if EV_PERIODIC_ENABLE 2838#if EV_PERIODIC_ENABLE
2839
2840static void noinline
2841periodic_recalc (EV_P_ ev_periodic *w)
2842{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845
2846 /* the above almost always errs on the low side */
2847 while (at <= ev_rt_now)
2848 {
2849 ev_tstamp nat = at + w->interval;
2850
2851 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at))
2853 {
2854 at = ev_rt_now;
2855 break;
2856 }
2857
2858 at = nat;
2859 }
2860
2861 ev_at (w) = at;
2862}
2863
2066/* make periodics pending */ 2864/* make periodics pending */
2067inline_size void 2865inline_size void
2068periodics_reify (EV_P) 2866periodics_reify (EV_P)
2069{ 2867{
2070 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2071 2869
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 2871 {
2074 int feed_count = 0;
2075
2076 do 2872 do
2077 { 2873 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 2875
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 2885 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 2886 downheap (periodics, periodiccnt, HEAP0);
2091 } 2887 }
2092 else if (w->interval) 2888 else if (w->interval)
2093 { 2889 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2890 periodic_recalc (EV_A_ w);
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]); 2891 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 2892 downheap (periodics, periodiccnt, HEAP0);
2110 } 2893 }
2111 else 2894 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2895 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 2902 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 2903 }
2121} 2904}
2122 2905
2123/* simply recalculate all periodics */ 2906/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2907/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 2908static void noinline ecb_cold
2126periodics_reschedule (EV_P) 2909periodics_reschedule (EV_P)
2127{ 2910{
2128 int i; 2911 int i;
2129 2912
2130 /* adjust periodics after time jump */ 2913 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2916 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 2917
2135 if (w->reschedule_cb) 2918 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2919 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 2920 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2921 periodic_recalc (EV_A_ w);
2139 2922
2140 ANHE_at_cache (periodics [i]); 2923 ANHE_at_cache (periodics [i]);
2141 } 2924 }
2142 2925
2143 reheap (periodics, periodiccnt); 2926 reheap (periodics, periodiccnt);
2144} 2927}
2145#endif 2928#endif
2146 2929
2147/* adjust all timers by a given offset */ 2930/* adjust all timers by a given offset */
2148static void noinline 2931static void noinline ecb_cold
2149timers_reschedule (EV_P_ ev_tstamp adjust) 2932timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 2933{
2151 int i; 2934 int i;
2152 2935
2153 for (i = 0; i < timercnt; ++i) 2936 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 2940 ANHE_at_cache (*he);
2158 } 2941 }
2159} 2942}
2160 2943
2161/* fetch new monotonic and realtime times from the kernel */ 2944/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 2945/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 2946inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 2947time_update (EV_P_ ev_tstamp max_block)
2165{ 2948{
2166#if EV_USE_MONOTONIC 2949#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 2950 if (expect_true (have_monotonic))
… …
2190 * doesn't hurt either as we only do this on time-jumps or 2973 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 2974 * in the unlikely event of having been preempted here.
2192 */ 2975 */
2193 for (i = 4; --i; ) 2976 for (i = 4; --i; )
2194 { 2977 {
2978 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 2979 rtmn_diff = ev_rt_now - mn_now;
2196 2980
2981 diff = odiff - rtmn_diff;
2982
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2198 return; /* all is well */ 2984 return; /* all is well */
2199 2985
2200 ev_rt_now = ev_time (); 2986 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 2987 mn_now = get_clock ();
2202 now_floor = mn_now; 2988 now_floor = mn_now;
… …
2224 3010
2225 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2226 } 3012 }
2227} 3013}
2228 3014
2229void 3015int
2230ev_loop (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2231{ 3017{
2232#if EV_MINIMAL < 2 3018#if EV_FEATURE_API
2233 ++loop_depth; 3019 ++loop_depth;
2234#endif 3020#endif
2235 3021
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3022 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 3023
2238 loop_done = EVUNLOOP_CANCEL; 3024 loop_done = EVBREAK_CANCEL;
2239 3025
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3026 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 3027
2242 do 3028 do
2243 { 3029 {
2244#if EV_VERIFY >= 2 3030#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 3031 ev_verify (EV_A);
2246#endif 3032#endif
2247 3033
2248#ifndef _WIN32 3034#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 3035 if (expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 3036 if (expect_false (getpid () != curpid))
… …
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3048 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 3049 EV_INVOKE_PENDING;
2264 } 3050 }
2265#endif 3051#endif
2266 3052
3053#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 3054 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 3055 if (expect_false (preparecnt))
2269 { 3056 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3057 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 3058 EV_INVOKE_PENDING;
2272 } 3059 }
3060#endif
2273 3061
2274 if (expect_false (loop_done)) 3062 if (expect_false (loop_done))
2275 break; 3063 break;
2276 3064
2277 /* we might have forked, so reify kernel state if necessary */ 3065 /* we might have forked, so reify kernel state if necessary */
… …
2284 /* calculate blocking time */ 3072 /* calculate blocking time */
2285 { 3073 {
2286 ev_tstamp waittime = 0.; 3074 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 3075 ev_tstamp sleeptime = 0.;
2288 3076
3077 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now;
3079
3080 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100);
3082
3083 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1;
3085
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 3089 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2298 3091
2299 if (timercnt) 3092 if (timercnt)
2300 { 3093 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 3095 if (waittime > to) waittime = to;
2303 } 3096 }
2304 3097
2305#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 3099 if (periodiccnt)
2307 { 3100 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2310 } 3103 }
2311#endif 3104#endif
2312 3105
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3106 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 3107 if (expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 3108 waittime = timeout_blocktime;
3109
3110 /* at this point, we NEED to wait, so we have to ensure */
3111 /* to pass a minimum nonzero value to the backend */
3112 if (expect_false (waittime < backend_mintime))
3113 waittime = backend_mintime;
2316 3114
2317 /* extra check because io_blocktime is commonly 0 */ 3115 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 3116 if (expect_false (io_blocktime))
2319 { 3117 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3118 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 3119
2322 if (sleeptime > waittime - backend_fudge) 3120 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 3121 sleeptime = waittime - backend_mintime;
2324 3122
2325 if (expect_true (sleeptime > 0.)) 3123 if (expect_true (sleeptime > 0.))
2326 { 3124 {
2327 ev_sleep (sleeptime); 3125 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 3126 waittime -= sleeptime;
2329 } 3127 }
2330 } 3128 }
2331 } 3129 }
2332 3130
2333#if EV_MINIMAL < 2 3131#if EV_FEATURE_API
2334 ++loop_count; 3132 ++loop_count;
2335#endif 3133#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 3135 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139
3140 if (pipe_write_skipped)
3141 {
3142 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3144 }
3145
2339 3146
2340 /* update ev_rt_now, do magic */ 3147 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 3148 time_update (EV_A_ waittime + sleeptime);
2342 } 3149 }
2343 3150
… …
2350#if EV_IDLE_ENABLE 3157#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 3158 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 3159 idle_reify (EV_A);
2353#endif 3160#endif
2354 3161
3162#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 3163 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 3164 if (expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3165 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3166#endif
2358 3167
2359 EV_INVOKE_PENDING; 3168 EV_INVOKE_PENDING;
2360 } 3169 }
2361 while (expect_true ( 3170 while (expect_true (
2362 activecnt 3171 activecnt
2363 && !loop_done 3172 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3173 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 3174 ));
2366 3175
2367 if (loop_done == EVUNLOOP_ONE) 3176 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 3177 loop_done = EVBREAK_CANCEL;
2369 3178
2370#if EV_MINIMAL < 2 3179#if EV_FEATURE_API
2371 --loop_depth; 3180 --loop_depth;
2372#endif 3181#endif
3182
3183 return activecnt;
2373} 3184}
2374 3185
2375void 3186void
2376ev_unloop (EV_P_ int how) 3187ev_break (EV_P_ int how) EV_THROW
2377{ 3188{
2378 loop_done = how; 3189 loop_done = how;
2379} 3190}
2380 3191
2381void 3192void
2382ev_ref (EV_P) 3193ev_ref (EV_P) EV_THROW
2383{ 3194{
2384 ++activecnt; 3195 ++activecnt;
2385} 3196}
2386 3197
2387void 3198void
2388ev_unref (EV_P) 3199ev_unref (EV_P) EV_THROW
2389{ 3200{
2390 --activecnt; 3201 --activecnt;
2391} 3202}
2392 3203
2393void 3204void
2394ev_now_update (EV_P) 3205ev_now_update (EV_P) EV_THROW
2395{ 3206{
2396 time_update (EV_A_ 1e100); 3207 time_update (EV_A_ 1e100);
2397} 3208}
2398 3209
2399void 3210void
2400ev_suspend (EV_P) 3211ev_suspend (EV_P) EV_THROW
2401{ 3212{
2402 ev_now_update (EV_A); 3213 ev_now_update (EV_A);
2403} 3214}
2404 3215
2405void 3216void
2406ev_resume (EV_P) 3217ev_resume (EV_P) EV_THROW
2407{ 3218{
2408 ev_tstamp mn_prev = mn_now; 3219 ev_tstamp mn_prev = mn_now;
2409 3220
2410 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 3222 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2450 w->pending = 0; 3261 w->pending = 0;
2451 } 3262 }
2452} 3263}
2453 3264
2454int 3265int
2455ev_clear_pending (EV_P_ void *w) 3266ev_clear_pending (EV_P_ void *w) EV_THROW
2456{ 3267{
2457 W w_ = (W)w; 3268 W w_ = (W)w;
2458 int pending = w_->pending; 3269 int pending = w_->pending;
2459 3270
2460 if (expect_true (pending)) 3271 if (expect_true (pending))
… …
2493} 3304}
2494 3305
2495/*****************************************************************************/ 3306/*****************************************************************************/
2496 3307
2497void noinline 3308void noinline
2498ev_io_start (EV_P_ ev_io *w) 3309ev_io_start (EV_P_ ev_io *w) EV_THROW
2499{ 3310{
2500 int fd = w->fd; 3311 int fd = w->fd;
2501 3312
2502 if (expect_false (ev_is_active (w))) 3313 if (expect_false (ev_is_active (w)))
2503 return; 3314 return;
2504 3315
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3316 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3317 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 3318
2508 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2509 3320
2510 ev_start (EV_A_ (W)w, 1); 3321 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3322 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2512 wlist_add (&anfds[fd].head, (WL)w); 3323 wlist_add (&anfds[fd].head, (WL)w);
2513 3324
3325 /* common bug, apparently */
3326 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3327
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3328 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 3329 w->events &= ~EV__IOFDSET;
2516 3330
2517 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2518} 3332}
2519 3333
2520void noinline 3334void noinline
2521ev_io_stop (EV_P_ ev_io *w) 3335ev_io_stop (EV_P_ ev_io *w) EV_THROW
2522{ 3336{
2523 clear_pending (EV_A_ (W)w); 3337 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3338 if (expect_false (!ev_is_active (w)))
2525 return; 3339 return;
2526 3340
… …
2529 EV_FREQUENT_CHECK; 3343 EV_FREQUENT_CHECK;
2530 3344
2531 wlist_del (&anfds[w->fd].head, (WL)w); 3345 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 3346 ev_stop (EV_A_ (W)w);
2533 3347
2534 fd_change (EV_A_ w->fd, 1); 3348 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 3349
2536 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2537} 3351}
2538 3352
2539void noinline 3353void noinline
2540ev_timer_start (EV_P_ ev_timer *w) 3354ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2541{ 3355{
2542 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2543 return; 3357 return;
2544 3358
2545 ev_at (w) += mn_now; 3359 ev_at (w) += mn_now;
… …
2559 3373
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3374 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 3375}
2562 3376
2563void noinline 3377void noinline
2564ev_timer_stop (EV_P_ ev_timer *w) 3378ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2565{ 3379{
2566 clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
2568 return; 3382 return;
2569 3383
… …
2581 timers [active] = timers [timercnt + HEAP0]; 3395 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 3396 adjustheap (timers, timercnt, active);
2583 } 3397 }
2584 } 3398 }
2585 3399
2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now; 3400 ev_at (w) -= mn_now;
2589 3401
2590 ev_stop (EV_A_ (W)w); 3402 ev_stop (EV_A_ (W)w);
3403
3404 EV_FREQUENT_CHECK;
2591} 3405}
2592 3406
2593void noinline 3407void noinline
2594ev_timer_again (EV_P_ ev_timer *w) 3408ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2595{ 3409{
2596 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
3411
3412 clear_pending (EV_A_ (W)w);
2597 3413
2598 if (ev_is_active (w)) 3414 if (ev_is_active (w))
2599 { 3415 {
2600 if (w->repeat) 3416 if (w->repeat)
2601 { 3417 {
… …
2614 3430
2615 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2616} 3432}
2617 3433
2618ev_tstamp 3434ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 3435ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2620{ 3436{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3437 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2622} 3438}
2623 3439
2624#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2625void noinline 3441void noinline
2626ev_periodic_start (EV_P_ ev_periodic *w) 3442ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2627{ 3443{
2628 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2629 return; 3445 return;
2630 3446
2631 if (w->reschedule_cb) 3447 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3448 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 3449 else if (w->interval)
2634 { 3450 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3451 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2636 /* this formula differs from the one in periodic_reify because we do not always round up */ 3452 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 3453 }
2639 else 3454 else
2640 ev_at (w) = w->offset; 3455 ev_at (w) = w->offset;
2641 3456
2642 EV_FREQUENT_CHECK; 3457 EV_FREQUENT_CHECK;
… …
2652 3467
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3468 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 3469}
2655 3470
2656void noinline 3471void noinline
2657ev_periodic_stop (EV_P_ ev_periodic *w) 3472ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2658{ 3473{
2659 clear_pending (EV_A_ (W)w); 3474 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 3475 if (expect_false (!ev_is_active (w)))
2661 return; 3476 return;
2662 3477
… …
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 3489 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 3490 adjustheap (periodics, periodiccnt, active);
2676 } 3491 }
2677 } 3492 }
2678 3493
2679 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
3495
3496 EV_FREQUENT_CHECK;
2682} 3497}
2683 3498
2684void noinline 3499void noinline
2685ev_periodic_again (EV_P_ ev_periodic *w) 3500ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2686{ 3501{
2687 /* TODO: use adjustheap and recalculation */ 3502 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 3503 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 3504 ev_periodic_start (EV_A_ w);
2690} 3505}
… …
2692 3507
2693#ifndef SA_RESTART 3508#ifndef SA_RESTART
2694# define SA_RESTART 0 3509# define SA_RESTART 0
2695#endif 3510#endif
2696 3511
3512#if EV_SIGNAL_ENABLE
3513
2697void noinline 3514void noinline
2698ev_signal_start (EV_P_ ev_signal *w) 3515ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2699{ 3516{
2700 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2701 return; 3518 return;
2702 3519
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3520 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2761 sa.sa_handler = ev_sighandler; 3578 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 3579 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3580 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 3581 sigaction (w->signum, &sa, 0);
2765 3582
3583 if (origflags & EVFLAG_NOSIGMASK)
3584 {
2766 sigemptyset (&sa.sa_mask); 3585 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 3586 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3587 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3588 }
2769#endif 3589#endif
2770 } 3590 }
2771 3591
2772 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2773} 3593}
2774 3594
2775void noinline 3595void noinline
2776ev_signal_stop (EV_P_ ev_signal *w) 3596ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2777{ 3597{
2778 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2780 return; 3600 return;
2781 3601
… …
2807 } 3627 }
2808 3628
2809 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
2810} 3630}
2811 3631
3632#endif
3633
3634#if EV_CHILD_ENABLE
3635
2812void 3636void
2813ev_child_start (EV_P_ ev_child *w) 3637ev_child_start (EV_P_ ev_child *w) EV_THROW
2814{ 3638{
2815#if EV_MULTIPLICITY 3639#if EV_MULTIPLICITY
2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3640 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2817#endif 3641#endif
2818 if (expect_false (ev_is_active (w))) 3642 if (expect_false (ev_is_active (w)))
2819 return; 3643 return;
2820 3644
2821 EV_FREQUENT_CHECK; 3645 EV_FREQUENT_CHECK;
2822 3646
2823 ev_start (EV_A_ (W)w, 1); 3647 ev_start (EV_A_ (W)w, 1);
2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3648 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2825 3649
2826 EV_FREQUENT_CHECK; 3650 EV_FREQUENT_CHECK;
2827} 3651}
2828 3652
2829void 3653void
2830ev_child_stop (EV_P_ ev_child *w) 3654ev_child_stop (EV_P_ ev_child *w) EV_THROW
2831{ 3655{
2832 clear_pending (EV_A_ (W)w); 3656 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3657 if (expect_false (!ev_is_active (w)))
2834 return; 3658 return;
2835 3659
2836 EV_FREQUENT_CHECK; 3660 EV_FREQUENT_CHECK;
2837 3661
2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3662 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2839 ev_stop (EV_A_ (W)w); 3663 ev_stop (EV_A_ (W)w);
2840 3664
2841 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2842} 3666}
3667
3668#endif
2843 3669
2844#if EV_STAT_ENABLE 3670#if EV_STAT_ENABLE
2845 3671
2846# ifdef _WIN32 3672# ifdef _WIN32
2847# undef lstat 3673# undef lstat
… …
2853#define MIN_STAT_INTERVAL 0.1074891 3679#define MIN_STAT_INTERVAL 0.1074891
2854 3680
2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3681static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2856 3682
2857#if EV_USE_INOTIFY 3683#if EV_USE_INOTIFY
2858# define EV_INOTIFY_BUFSIZE 8192 3684
3685/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3686# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2859 3687
2860static void noinline 3688static void noinline
2861infy_add (EV_P_ ev_stat *w) 3689infy_add (EV_P_ ev_stat *w)
2862{ 3690{
2863 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); 3691 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);
… …
2906 if (!pend || pend == path) 3734 if (!pend || pend == path)
2907 break; 3735 break;
2908 3736
2909 *pend = 0; 3737 *pend = 0;
2910 w->wd = inotify_add_watch (fs_fd, path, mask); 3738 w->wd = inotify_add_watch (fs_fd, path, mask);
2911 } 3739 }
2912 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3740 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2913 } 3741 }
2914 } 3742 }
2915 3743
2916 if (w->wd >= 0) 3744 if (w->wd >= 0)
2917 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3745 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2918 3746
2919 /* now re-arm timer, if required */ 3747 /* now re-arm timer, if required */
2920 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3748 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2921 ev_timer_again (EV_A_ &w->timer); 3749 ev_timer_again (EV_A_ &w->timer);
2922 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3750 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2930 3758
2931 if (wd < 0) 3759 if (wd < 0)
2932 return; 3760 return;
2933 3761
2934 w->wd = -2; 3762 w->wd = -2;
2935 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3763 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2936 wlist_del (&fs_hash [slot].head, (WL)w); 3764 wlist_del (&fs_hash [slot].head, (WL)w);
2937 3765
2938 /* remove this watcher, if others are watching it, they will rearm */ 3766 /* remove this watcher, if others are watching it, they will rearm */
2939 inotify_rm_watch (fs_fd, wd); 3767 inotify_rm_watch (fs_fd, wd);
2940} 3768}
… …
2942static void noinline 3770static void noinline
2943infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3771infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2944{ 3772{
2945 if (slot < 0) 3773 if (slot < 0)
2946 /* overflow, need to check for all hash slots */ 3774 /* overflow, need to check for all hash slots */
2947 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3775 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2948 infy_wd (EV_A_ slot, wd, ev); 3776 infy_wd (EV_A_ slot, wd, ev);
2949 else 3777 else
2950 { 3778 {
2951 WL w_; 3779 WL w_;
2952 3780
2953 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3781 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2954 { 3782 {
2955 ev_stat *w = (ev_stat *)w_; 3783 ev_stat *w = (ev_stat *)w_;
2956 w_ = w_->next; /* lets us remove this watcher and all before it */ 3784 w_ = w_->next; /* lets us remove this watcher and all before it */
2957 3785
2958 if (w->wd == wd || wd == -1) 3786 if (w->wd == wd || wd == -1)
2959 { 3787 {
2960 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3788 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2961 { 3789 {
2962 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3790 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2963 w->wd = -1; 3791 w->wd = -1;
2964 infy_add (EV_A_ w); /* re-add, no matter what */ 3792 infy_add (EV_A_ w); /* re-add, no matter what */
2965 } 3793 }
2966 3794
2967 stat_timer_cb (EV_A_ &w->timer, 0); 3795 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2972 3800
2973static void 3801static void
2974infy_cb (EV_P_ ev_io *w, int revents) 3802infy_cb (EV_P_ ev_io *w, int revents)
2975{ 3803{
2976 char buf [EV_INOTIFY_BUFSIZE]; 3804 char buf [EV_INOTIFY_BUFSIZE];
2977 struct inotify_event *ev = (struct inotify_event *)buf;
2978 int ofs; 3805 int ofs;
2979 int len = read (fs_fd, buf, sizeof (buf)); 3806 int len = read (fs_fd, buf, sizeof (buf));
2980 3807
2981 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3808 for (ofs = 0; ofs < len; )
3809 {
3810 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2982 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3811 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3812 ofs += sizeof (struct inotify_event) + ev->len;
3813 }
2983} 3814}
2984 3815
2985inline_size void 3816inline_size void ecb_cold
2986check_2625 (EV_P) 3817ev_check_2625 (EV_P)
2987{ 3818{
2988 /* kernels < 2.6.25 are borked 3819 /* kernels < 2.6.25 are borked
2989 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3820 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2990 */ 3821 */
2991 struct utsname buf; 3822 if (ev_linux_version () < 0x020619)
2992 int major, minor, micro;
2993
2994 if (uname (&buf))
2995 return;
2996
2997 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2998 return;
2999
3000 if (major < 2
3001 || (major == 2 && minor < 6)
3002 || (major == 2 && minor == 6 && micro < 25))
3003 return; 3823 return;
3004 3824
3005 fs_2625 = 1; 3825 fs_2625 = 1;
3006} 3826}
3007 3827
3008inline_size int 3828inline_size int
3009infy_newfd (void) 3829infy_newfd (void)
3010{ 3830{
3011#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3831#if defined IN_CLOEXEC && defined IN_NONBLOCK
3012 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3832 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3013 if (fd >= 0) 3833 if (fd >= 0)
3014 return fd; 3834 return fd;
3015#endif 3835#endif
3016 return inotify_init (); 3836 return inotify_init ();
… …
3022 if (fs_fd != -2) 3842 if (fs_fd != -2)
3023 return; 3843 return;
3024 3844
3025 fs_fd = -1; 3845 fs_fd = -1;
3026 3846
3027 check_2625 (EV_A); 3847 ev_check_2625 (EV_A);
3028 3848
3029 fs_fd = infy_newfd (); 3849 fs_fd = infy_newfd ();
3030 3850
3031 if (fs_fd >= 0) 3851 if (fs_fd >= 0)
3032 { 3852 {
… …
3057 ev_io_set (&fs_w, fs_fd, EV_READ); 3877 ev_io_set (&fs_w, fs_fd, EV_READ);
3058 ev_io_start (EV_A_ &fs_w); 3878 ev_io_start (EV_A_ &fs_w);
3059 ev_unref (EV_A); 3879 ev_unref (EV_A);
3060 } 3880 }
3061 3881
3062 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3882 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3063 { 3883 {
3064 WL w_ = fs_hash [slot].head; 3884 WL w_ = fs_hash [slot].head;
3065 fs_hash [slot].head = 0; 3885 fs_hash [slot].head = 0;
3066 3886
3067 while (w_) 3887 while (w_)
… …
3091#else 3911#else
3092# define EV_LSTAT(p,b) lstat (p, b) 3912# define EV_LSTAT(p,b) lstat (p, b)
3093#endif 3913#endif
3094 3914
3095void 3915void
3096ev_stat_stat (EV_P_ ev_stat *w) 3916ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3097{ 3917{
3098 if (lstat (w->path, &w->attr) < 0) 3918 if (lstat (w->path, &w->attr) < 0)
3099 w->attr.st_nlink = 0; 3919 w->attr.st_nlink = 0;
3100 else if (!w->attr.st_nlink) 3920 else if (!w->attr.st_nlink)
3101 w->attr.st_nlink = 1; 3921 w->attr.st_nlink = 1;
… …
3140 ev_feed_event (EV_A_ w, EV_STAT); 3960 ev_feed_event (EV_A_ w, EV_STAT);
3141 } 3961 }
3142} 3962}
3143 3963
3144void 3964void
3145ev_stat_start (EV_P_ ev_stat *w) 3965ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3146{ 3966{
3147 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
3148 return; 3968 return;
3149 3969
3150 ev_stat_stat (EV_A_ w); 3970 ev_stat_stat (EV_A_ w);
… …
3171 3991
3172 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
3173} 3993}
3174 3994
3175void 3995void
3176ev_stat_stop (EV_P_ ev_stat *w) 3996ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3177{ 3997{
3178 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
3179 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
3180 return; 4000 return;
3181 4001
… …
3197} 4017}
3198#endif 4018#endif
3199 4019
3200#if EV_IDLE_ENABLE 4020#if EV_IDLE_ENABLE
3201void 4021void
3202ev_idle_start (EV_P_ ev_idle *w) 4022ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3203{ 4023{
3204 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
3205 return; 4025 return;
3206 4026
3207 pri_adjust (EV_A_ (W)w); 4027 pri_adjust (EV_A_ (W)w);
… …
3220 4040
3221 EV_FREQUENT_CHECK; 4041 EV_FREQUENT_CHECK;
3222} 4042}
3223 4043
3224void 4044void
3225ev_idle_stop (EV_P_ ev_idle *w) 4045ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3226{ 4046{
3227 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
3228 if (expect_false (!ev_is_active (w))) 4048 if (expect_false (!ev_is_active (w)))
3229 return; 4049 return;
3230 4050
… …
3242 4062
3243 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3244} 4064}
3245#endif 4065#endif
3246 4066
4067#if EV_PREPARE_ENABLE
3247void 4068void
3248ev_prepare_start (EV_P_ ev_prepare *w) 4069ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3249{ 4070{
3250 if (expect_false (ev_is_active (w))) 4071 if (expect_false (ev_is_active (w)))
3251 return; 4072 return;
3252 4073
3253 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
… …
3258 4079
3259 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
3260} 4081}
3261 4082
3262void 4083void
3263ev_prepare_stop (EV_P_ ev_prepare *w) 4084ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3264{ 4085{
3265 clear_pending (EV_A_ (W)w); 4086 clear_pending (EV_A_ (W)w);
3266 if (expect_false (!ev_is_active (w))) 4087 if (expect_false (!ev_is_active (w)))
3267 return; 4088 return;
3268 4089
… …
3277 4098
3278 ev_stop (EV_A_ (W)w); 4099 ev_stop (EV_A_ (W)w);
3279 4100
3280 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
3281} 4102}
4103#endif
3282 4104
4105#if EV_CHECK_ENABLE
3283void 4106void
3284ev_check_start (EV_P_ ev_check *w) 4107ev_check_start (EV_P_ ev_check *w) EV_THROW
3285{ 4108{
3286 if (expect_false (ev_is_active (w))) 4109 if (expect_false (ev_is_active (w)))
3287 return; 4110 return;
3288 4111
3289 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
… …
3294 4117
3295 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
3296} 4119}
3297 4120
3298void 4121void
3299ev_check_stop (EV_P_ ev_check *w) 4122ev_check_stop (EV_P_ ev_check *w) EV_THROW
3300{ 4123{
3301 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
3302 if (expect_false (!ev_is_active (w))) 4125 if (expect_false (!ev_is_active (w)))
3303 return; 4126 return;
3304 4127
… …
3313 4136
3314 ev_stop (EV_A_ (W)w); 4137 ev_stop (EV_A_ (W)w);
3315 4138
3316 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3317} 4140}
4141#endif
3318 4142
3319#if EV_EMBED_ENABLE 4143#if EV_EMBED_ENABLE
3320void noinline 4144void noinline
3321ev_embed_sweep (EV_P_ ev_embed *w) 4145ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3322{ 4146{
3323 ev_loop (w->other, EVLOOP_NONBLOCK); 4147 ev_run (w->other, EVRUN_NOWAIT);
3324} 4148}
3325 4149
3326static void 4150static void
3327embed_io_cb (EV_P_ ev_io *io, int revents) 4151embed_io_cb (EV_P_ ev_io *io, int revents)
3328{ 4152{
3329 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4153 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3330 4154
3331 if (ev_cb (w)) 4155 if (ev_cb (w))
3332 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4156 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3333 else 4157 else
3334 ev_loop (w->other, EVLOOP_NONBLOCK); 4158 ev_run (w->other, EVRUN_NOWAIT);
3335} 4159}
3336 4160
3337static void 4161static void
3338embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4162embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3339{ 4163{
… …
3343 EV_P = w->other; 4167 EV_P = w->other;
3344 4168
3345 while (fdchangecnt) 4169 while (fdchangecnt)
3346 { 4170 {
3347 fd_reify (EV_A); 4171 fd_reify (EV_A);
3348 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4172 ev_run (EV_A_ EVRUN_NOWAIT);
3349 } 4173 }
3350 } 4174 }
3351} 4175}
3352 4176
3353static void 4177static void
… …
3359 4183
3360 { 4184 {
3361 EV_P = w->other; 4185 EV_P = w->other;
3362 4186
3363 ev_loop_fork (EV_A); 4187 ev_loop_fork (EV_A);
3364 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4188 ev_run (EV_A_ EVRUN_NOWAIT);
3365 } 4189 }
3366 4190
3367 ev_embed_start (EV_A_ w); 4191 ev_embed_start (EV_A_ w);
3368} 4192}
3369 4193
… …
3374 ev_idle_stop (EV_A_ idle); 4198 ev_idle_stop (EV_A_ idle);
3375} 4199}
3376#endif 4200#endif
3377 4201
3378void 4202void
3379ev_embed_start (EV_P_ ev_embed *w) 4203ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3380{ 4204{
3381 if (expect_false (ev_is_active (w))) 4205 if (expect_false (ev_is_active (w)))
3382 return; 4206 return;
3383 4207
3384 { 4208 {
… …
3405 4229
3406 EV_FREQUENT_CHECK; 4230 EV_FREQUENT_CHECK;
3407} 4231}
3408 4232
3409void 4233void
3410ev_embed_stop (EV_P_ ev_embed *w) 4234ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3411{ 4235{
3412 clear_pending (EV_A_ (W)w); 4236 clear_pending (EV_A_ (W)w);
3413 if (expect_false (!ev_is_active (w))) 4237 if (expect_false (!ev_is_active (w)))
3414 return; 4238 return;
3415 4239
… …
3417 4241
3418 ev_io_stop (EV_A_ &w->io); 4242 ev_io_stop (EV_A_ &w->io);
3419 ev_prepare_stop (EV_A_ &w->prepare); 4243 ev_prepare_stop (EV_A_ &w->prepare);
3420 ev_fork_stop (EV_A_ &w->fork); 4244 ev_fork_stop (EV_A_ &w->fork);
3421 4245
4246 ev_stop (EV_A_ (W)w);
4247
3422 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3423} 4249}
3424#endif 4250#endif
3425 4251
3426#if EV_FORK_ENABLE 4252#if EV_FORK_ENABLE
3427void 4253void
3428ev_fork_start (EV_P_ ev_fork *w) 4254ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3429{ 4255{
3430 if (expect_false (ev_is_active (w))) 4256 if (expect_false (ev_is_active (w)))
3431 return; 4257 return;
3432 4258
3433 EV_FREQUENT_CHECK; 4259 EV_FREQUENT_CHECK;
… …
3438 4264
3439 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3440} 4266}
3441 4267
3442void 4268void
3443ev_fork_stop (EV_P_ ev_fork *w) 4269ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3444{ 4270{
3445 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3446 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3447 return; 4273 return;
3448 4274
… …
3459 4285
3460 EV_FREQUENT_CHECK; 4286 EV_FREQUENT_CHECK;
3461} 4287}
3462#endif 4288#endif
3463 4289
4290#if EV_CLEANUP_ENABLE
4291void
4292ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4293{
4294 if (expect_false (ev_is_active (w)))
4295 return;
4296
4297 EV_FREQUENT_CHECK;
4298
4299 ev_start (EV_A_ (W)w, ++cleanupcnt);
4300 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4301 cleanups [cleanupcnt - 1] = w;
4302
4303 /* cleanup watchers should never keep a refcount on the loop */
4304 ev_unref (EV_A);
4305 EV_FREQUENT_CHECK;
4306}
4307
4308void
4309ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4310{
4311 clear_pending (EV_A_ (W)w);
4312 if (expect_false (!ev_is_active (w)))
4313 return;
4314
4315 EV_FREQUENT_CHECK;
4316 ev_ref (EV_A);
4317
4318 {
4319 int active = ev_active (w);
4320
4321 cleanups [active - 1] = cleanups [--cleanupcnt];
4322 ev_active (cleanups [active - 1]) = active;
4323 }
4324
4325 ev_stop (EV_A_ (W)w);
4326
4327 EV_FREQUENT_CHECK;
4328}
4329#endif
4330
3464#if EV_ASYNC_ENABLE 4331#if EV_ASYNC_ENABLE
3465void 4332void
3466ev_async_start (EV_P_ ev_async *w) 4333ev_async_start (EV_P_ ev_async *w) EV_THROW
3467{ 4334{
3468 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3469 return; 4336 return;
4337
4338 w->sent = 0;
3470 4339
3471 evpipe_init (EV_A); 4340 evpipe_init (EV_A);
3472 4341
3473 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3474 4343
… …
3478 4347
3479 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3480} 4349}
3481 4350
3482void 4351void
3483ev_async_stop (EV_P_ ev_async *w) 4352ev_async_stop (EV_P_ ev_async *w) EV_THROW
3484{ 4353{
3485 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3486 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3487 return; 4356 return;
3488 4357
… …
3499 4368
3500 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3501} 4370}
3502 4371
3503void 4372void
3504ev_async_send (EV_P_ ev_async *w) 4373ev_async_send (EV_P_ ev_async *w) EV_THROW
3505{ 4374{
3506 w->sent = 1; 4375 w->sent = 1;
3507 evpipe_write (EV_A_ &async_pending); 4376 evpipe_write (EV_A_ &async_pending);
3508} 4377}
3509#endif 4378#endif
… …
3546 4415
3547 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4416 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3548} 4417}
3549 4418
3550void 4419void
3551ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3552{ 4421{
3553 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3554 4423
3555 if (expect_false (!once)) 4424 if (expect_false (!once))
3556 { 4425 {
3557 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3558 return; 4427 return;
3559 } 4428 }
3560 4429
3561 once->cb = cb; 4430 once->cb = cb;
3562 once->arg = arg; 4431 once->arg = arg;
… …
3577} 4446}
3578 4447
3579/*****************************************************************************/ 4448/*****************************************************************************/
3580 4449
3581#if EV_WALK_ENABLE 4450#if EV_WALK_ENABLE
3582void 4451void ecb_cold
3583ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4452ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3584{ 4453{
3585 int i, j; 4454 int i, j;
3586 ev_watcher_list *wl, *wn; 4455 ev_watcher_list *wl, *wn;
3587 4456
3588 if (types & (EV_IO | EV_EMBED)) 4457 if (types & (EV_IO | EV_EMBED))
… …
3631 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4500 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3632#endif 4501#endif
3633 4502
3634#if EV_IDLE_ENABLE 4503#if EV_IDLE_ENABLE
3635 if (types & EV_IDLE) 4504 if (types & EV_IDLE)
3636 for (j = NUMPRI; i--; ) 4505 for (j = NUMPRI; j--; )
3637 for (i = idlecnt [j]; i--; ) 4506 for (i = idlecnt [j]; i--; )
3638 cb (EV_A_ EV_IDLE, idles [j][i]); 4507 cb (EV_A_ EV_IDLE, idles [j][i]);
3639#endif 4508#endif
3640 4509
3641#if EV_FORK_ENABLE 4510#if EV_FORK_ENABLE
… …
3649 if (types & EV_ASYNC) 4518 if (types & EV_ASYNC)
3650 for (i = asynccnt; i--; ) 4519 for (i = asynccnt; i--; )
3651 cb (EV_A_ EV_ASYNC, asyncs [i]); 4520 cb (EV_A_ EV_ASYNC, asyncs [i]);
3652#endif 4521#endif
3653 4522
4523#if EV_PREPARE_ENABLE
3654 if (types & EV_PREPARE) 4524 if (types & EV_PREPARE)
3655 for (i = preparecnt; i--; ) 4525 for (i = preparecnt; i--; )
3656#if EV_EMBED_ENABLE 4526# if EV_EMBED_ENABLE
3657 if (ev_cb (prepares [i]) != embed_prepare_cb) 4527 if (ev_cb (prepares [i]) != embed_prepare_cb)
3658#endif 4528# endif
3659 cb (EV_A_ EV_PREPARE, prepares [i]); 4529 cb (EV_A_ EV_PREPARE, prepares [i]);
4530#endif
3660 4531
4532#if EV_CHECK_ENABLE
3661 if (types & EV_CHECK) 4533 if (types & EV_CHECK)
3662 for (i = checkcnt; i--; ) 4534 for (i = checkcnt; i--; )
3663 cb (EV_A_ EV_CHECK, checks [i]); 4535 cb (EV_A_ EV_CHECK, checks [i]);
4536#endif
3664 4537
4538#if EV_SIGNAL_ENABLE
3665 if (types & EV_SIGNAL) 4539 if (types & EV_SIGNAL)
3666 for (i = 0; i < EV_NSIG - 1; ++i) 4540 for (i = 0; i < EV_NSIG - 1; ++i)
3667 for (wl = signals [i].head; wl; ) 4541 for (wl = signals [i].head; wl; )
3668 { 4542 {
3669 wn = wl->next; 4543 wn = wl->next;
3670 cb (EV_A_ EV_SIGNAL, wl); 4544 cb (EV_A_ EV_SIGNAL, wl);
3671 wl = wn; 4545 wl = wn;
3672 } 4546 }
4547#endif
3673 4548
4549#if EV_CHILD_ENABLE
3674 if (types & EV_CHILD) 4550 if (types & EV_CHILD)
3675 for (i = EV_PID_HASHSIZE; i--; ) 4551 for (i = (EV_PID_HASHSIZE); i--; )
3676 for (wl = childs [i]; wl; ) 4552 for (wl = childs [i]; wl; )
3677 { 4553 {
3678 wn = wl->next; 4554 wn = wl->next;
3679 cb (EV_A_ EV_CHILD, wl); 4555 cb (EV_A_ EV_CHILD, wl);
3680 wl = wn; 4556 wl = wn;
3681 } 4557 }
4558#endif
3682/* EV_STAT 0x00001000 /* stat data changed */ 4559/* EV_STAT 0x00001000 /* stat data changed */
3683/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4560/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3684} 4561}
3685#endif 4562#endif
3686 4563
3687#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
3688 #include "ev_wrap.h" 4565 #include "ev_wrap.h"
3689#endif 4566#endif
3690 4567
3691#ifdef __cplusplus
3692}
3693#endif
3694

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