ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC vs.
Revision 1.446 by root, Mon Jun 11 12:50:50 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>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# 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
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#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
188 221
189/* 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 */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 225#if defined EV_NSIG
193/* use what's provided */ 226/* use what's provided */
194#elif defined (NSIG) 227#elif defined NSIG
195# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 229#elif defined _NSIG
197# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 231#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 233#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 237#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 239#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 243#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 245#else
213# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
214/* 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! :) */
215# define EV_NSIG 65 249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
216#endif 254#endif
217 255
218#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 259# else
222# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
223# endif 261# endif
224#endif 262#endif
225 263
226#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 267# else
230# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
231# endif 269# endif
232#endif 270#endif
233 271
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 274#endif
237 275
238#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 279# else
242# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
243# endif 281# endif
244#endif 282#endif
245 283
246#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 286#endif
249 287
250#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
251# ifdef _WIN32 289# ifdef _WIN32
252# define EV_USE_POLL 0 290# define EV_USE_POLL 0
253# else 291# else
254# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 293# endif
256#endif 294#endif
257 295
258#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 299# else
262# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
263# endif 301# endif
264#endif 302#endif
265 303
… …
271# define EV_USE_PORT 0 309# define EV_USE_PORT 0
272#endif 310#endif
273 311
274#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 315# else
278# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
279# endif 317# endif
280#endif 318#endif
281 319
282#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 322#endif
289 323
290#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 326#endif
297 327
298#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 331# else
302# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
303# endif 333# endif
304#endif 334#endif
305 335
306#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 339# else
310# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
311# endif 341# endif
312#endif 342#endif
313 343
… …
316# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
318#endif 348#endif
319 349
320#ifndef EV_VERIFY 350#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 352#endif
323 353
324#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 356#endif
327 357
328#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 360#endif
331 361
332/* 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, */
333/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 365# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
340# else 370# else
… …
343# endif 373# endif
344#endif 374#endif
345 375
346/* 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 */
347 377
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
348#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
351#endif 387#endif
352 388
… …
359# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
361#endif 397#endif
362 398
363#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 402# include <sys/select.h>
366# endif 403# endif
367#endif 404#endif
368 405
369#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 407# include <sys/statfs.h>
372# include <sys/inotify.h> 408# include <sys/inotify.h>
373/* 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 */
374# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
377# endif 413# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 414#endif
383 415
384#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
385/* 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 */
386# include <stdint.h> 418# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
393# else 425# else
394# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
395# endif 427# endif
396# endif 428# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 430#endif
405 431
406#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
407/* 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 */
408# include <stdint.h> 434# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
415# else 441# else
416# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
417# endif 443# endif
418# endif 444# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 446
424struct signalfd_siginfo 447struct signalfd_siginfo
425{ 448{
426 uint32_t ssi_signo; 449 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
428}; 451};
429# ifdef __cplusplus
430}
431# endif 452#endif
432#endif
433
434 453
435/**/ 454/**/
436 455
437#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 458#else
440# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
441#endif 460#endif
442 461
443/* 462/*
444 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 465 */
451#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 */
452 468
453#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) */
454#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) */
455 471
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;
456#if __GNUC__ >= 4 519 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
458# 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;
459#else 536#else
460# define expect(expr,value) (expr) 537 #include <inttypes.h>
461# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
463# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
464# 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)))
465#endif 557 #endif
558#endif
466 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
469#define inline_size static inline 1013#define inline_size ecb_inline
470 1014
471#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
472# define inline_speed static noinline 1018# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 1019#endif
476 1020
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 1022
479#if EV_MINPRI == EV_MAXPRI 1023#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
494 1038
495#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* sig_atomic_t is used to avoid per-thread variables or locking but still */
497/* giving it a reasonably high chance of working on typical architetcures */ 1041/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 1043#endif
500 1044
501#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 1048
505#ifndef EV_FD_TO_WIN32_HANDLE 1049#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1050# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 1051#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 1052#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1053# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 1054#endif
511#ifndef EV_WIN32_CLOSE_FD 1055#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 1056# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 1057#endif
514 1058
… …
516# include "ev_win32.c" 1060# include "ev_win32.c"
517#endif 1061#endif
518 1062
519/*****************************************************************************/ 1063/*****************************************************************************/
520 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
1155#if EV_AVOID_STDIO
1156static void noinline ecb_cold
1157ev_printerr (const char *msg)
1158{
1159 write (STDERR_FILENO, msg, strlen (msg));
1160}
1161#endif
1162
521static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
522 1164
523void 1165void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
525{ 1167{
526 syserr_cb = cb; 1168 syserr_cb = cb;
527} 1169}
528 1170
529static void noinline 1171static void noinline ecb_cold
530ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
531{ 1173{
532 if (!msg) 1174 if (!msg)
533 msg = "(libev) system error"; 1175 msg = "(libev) system error";
534 1176
535 if (syserr_cb) 1177 if (syserr_cb)
536 syserr_cb (msg); 1178 syserr_cb (msg);
537 else 1179 else
538 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
539 perror (msg); 1187 perror (msg);
1188#endif
540 abort (); 1189 abort ();
541 } 1190 }
542} 1191}
543 1192
544static void * 1193static void *
545ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
546{ 1195{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
547 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1200 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
550 */ 1202 */
551 1203
552 if (size) 1204 if (size)
553 return realloc (ptr, size); 1205 return realloc (ptr, size);
554 1206
555 free (ptr); 1207 free (ptr);
556 return 0; 1208 return 0;
1209#endif
557} 1210}
558 1211
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
560 1213
561void 1214void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
563{ 1216{
564 alloc = cb; 1217 alloc = cb;
565} 1218}
566 1219
567inline_speed void * 1220inline_speed void *
… …
569{ 1222{
570 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
571 1224
572 if (!ptr && size) 1225 if (!ptr && size)
573 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
575 abort (); 1232 abort ();
576 } 1233 }
577 1234
578 return ptr; 1235 return ptr;
579} 1236}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1253 unsigned char unused;
597#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1256#endif
600#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1258 SOCKET handle;
1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
602#endif 1262#endif
603} ANFD; 1263} ANFD;
604 1264
605/* stores the pending event set for a given watcher */ 1265/* stores the pending event set for a given watcher */
606typedef struct 1266typedef struct
… …
648 #undef VAR 1308 #undef VAR
649 }; 1309 };
650 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
651 1311
652 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
653 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
654 1314
655#else 1315#else
656 1316
657 ev_tstamp ev_rt_now; 1317 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
658 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
659 #include "ev_vars.h" 1319 #include "ev_vars.h"
660 #undef VAR 1320 #undef VAR
661 1321
662 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
663 1323
664#endif 1324#endif
665 1325
666#if EV_MINIMAL < 2 1326#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1327# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1330#else
671# define EV_RELEASE_CB (void)0 1331# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1332# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1334#endif
675 1335
676#define EVUNLOOP_RECURSE 0x80 1336#define EVBREAK_RECURSE 0x80
677 1337
678/*****************************************************************************/ 1338/*****************************************************************************/
679 1339
680#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1341ev_tstamp
682ev_time (void) 1342ev_time (void) EV_THROW
683{ 1343{
684#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
685 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
686 { 1346 {
687 struct timespec ts; 1347 struct timespec ts;
… …
711 return ev_time (); 1371 return ev_time ();
712} 1372}
713 1373
714#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
715ev_tstamp 1375ev_tstamp
716ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
717{ 1377{
718 return ev_rt_now; 1378 return ev_rt_now;
719} 1379}
720#endif 1380#endif
721 1381
722void 1382void
723ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
724{ 1384{
725 if (delay > 0.) 1385 if (delay > 0.)
726 { 1386 {
727#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
728 struct timespec ts; 1388 struct timespec ts;
729 1389
730 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1392#elif defined _WIN32
735 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
736#else 1394#else
737 struct timeval tv; 1395 struct timeval tv;
738 1396
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
746#endif 1402#endif
747 } 1403 }
748} 1404}
749 1405
750/*****************************************************************************/ 1406/*****************************************************************************/
751 1407
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1409
754/* find a suitable new size for the given array, */ 1410/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1411/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1412inline_size int
757array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
758{ 1414{
759 int ncur = cur + 1; 1415 int ncur = cur + 1;
760 1416
761 do 1417 do
762 ncur <<= 1; 1418 ncur <<= 1;
763 while (cnt > ncur); 1419 while (cnt > ncur);
764 1420
765 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
766 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
767 { 1423 {
768 ncur *= elem; 1424 ncur *= elem;
769 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
770 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
772 } 1428 }
773 1429
774 return ncur; 1430 return ncur;
775} 1431}
776 1432
777static noinline void * 1433static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1435{
780 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
782} 1438}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1442
787#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
789 { \ 1445 { \
790 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1450 }
795 1451
… …
813pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
814{ 1470{
815} 1471}
816 1472
817void noinline 1473void noinline
818ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
819{ 1475{
820 W w_ = (W)w; 1476 W w_ = (W)w;
821 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
822 1478
823 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
827 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
828 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
829 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
830 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
831 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
832} 1490}
833 1491
834inline_speed void 1492inline_speed void
835feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
836{ 1494{
… …
856} 1514}
857 1515
858/*****************************************************************************/ 1516/*****************************************************************************/
859 1517
860inline_speed void 1518inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1520{
863 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
864 ev_io *w; 1522 ev_io *w;
865 1523
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1524 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1536fd_event (EV_P_ int fd, int revents)
879{ 1537{
880 ANFD *anfd = anfds + fd; 1538 ANFD *anfd = anfds + fd;
881 1539
882 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
884} 1542}
885 1543
886void 1544void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
888{ 1546{
889 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
891} 1549}
892 1550
893/* make sure the external fd watch events are in-sync */ 1551/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1552/* with the kernel/libev internal state */
895inline_size void 1553inline_size void
896fd_reify (EV_P) 1554fd_reify (EV_P)
897{ 1555{
898 int i; 1556 int i;
899 1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
1582
900 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
901 { 1584 {
902 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
904 ev_io *w; 1587 ev_io *w;
905 1588
906 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
907 1591
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1593
911#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1595 {
914 unsigned long arg; 1596 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1597
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1599 anfd->events |= (unsigned char)w->events;
1600
1601 if (o_events != anfd->events)
1602 o_reify = EV__IOFDSET; /* actually |= */
917 } 1603 }
918#endif
919 1604
920 { 1605 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1607 }
931 1608
932 fdchangecnt = 0; 1609 fdchangecnt = 0;
933} 1610}
934 1611
… …
946 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
947 } 1624 }
948} 1625}
949 1626
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1628inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
953{ 1630{
954 ev_io *w; 1631 ev_io *w;
955 1632
956 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1637 }
961} 1638}
962 1639
963/* check whether the given fd is atcually valid, for error recovery */ 1640/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1641inline_size int ecb_cold
965fd_valid (int fd) 1642fd_valid (int fd)
966{ 1643{
967#ifdef _WIN32 1644#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1646#else
970 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
971#endif 1648#endif
972} 1649}
973 1650
974/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
975static void noinline 1652static void noinline ecb_cold
976fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
977{ 1654{
978 int fd; 1655 int fd;
979 1656
980 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
984} 1661}
985 1662
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1664static void noinline ecb_cold
988fd_enomem (EV_P) 1665fd_enomem (EV_P)
989{ 1666{
990 int fd; 1667 int fd;
991 1668
992 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1689 }
1013} 1690}
1014 1691
1692/* used to prepare libev internal fd's */
1693/* this is not fork-safe */
1694inline_speed void
1695fd_intern (int fd)
1696{
1697#ifdef _WIN32
1698 unsigned long arg = 1;
1699 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1700#else
1701 fcntl (fd, F_SETFD, FD_CLOEXEC);
1702 fcntl (fd, F_SETFL, O_NONBLOCK);
1703#endif
1704}
1705
1015/*****************************************************************************/ 1706/*****************************************************************************/
1016 1707
1017/* 1708/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * the heap functions want a real array index. array index 0 is guaranteed to not
1019 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
1021 */ 1712 */
1022 1713
1023/* 1714/*
… …
1171 1862
1172static ANSIG signals [EV_NSIG - 1]; 1863static ANSIG signals [EV_NSIG - 1];
1173 1864
1174/*****************************************************************************/ 1865/*****************************************************************************/
1175 1866
1176/* used to prepare libev internal fd's */ 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */
1178inline_speed void
1179fd_intern (int fd)
1180{
1181#ifdef _WIN32
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 1868
1190static void noinline 1869static void noinline ecb_cold
1191evpipe_init (EV_P) 1870evpipe_init (EV_P)
1192{ 1871{
1193 if (!ev_is_active (&pipe_w)) 1872 if (!ev_is_active (&pipe_w))
1194 { 1873 {
1195#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1876 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1877 evfd = eventfd (0, 0);
1199 1878
1200 if (evfd >= 0) 1879 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1881 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1884 }
1206 else 1885 else
1207#endif 1886# endif
1208 { 1887 {
1209 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1211 1890
1212 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1896 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1898 }
1220} 1899}
1221 1900
1222inline_size void 1901inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1903{
1225 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1226 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1227 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1228
1229 *flag = 1;
1230 1924
1231#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1926 if (evfd >= 0)
1233 { 1927 {
1234 uint64_t counter = 1; 1928 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1236 } 1930 }
1237 else 1931 else
1238#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1239 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1240 1944
1241 errno = old_errno; 1945 errno = old_errno;
1242 } 1946 }
1243} 1947}
1244 1948
… …
1247static void 1951static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1953{
1250 int i; 1954 int i;
1251 1955
1956 if (revents & EV_READ)
1957 {
1252#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1959 if (evfd >= 0)
1254 { 1960 {
1255 uint64_t counter; 1961 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1257 } 1963 }
1258 else 1964 else
1259#endif 1965#endif
1260 { 1966 {
1261 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1262 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1263 } 1979 }
1264 1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1986 if (sig_pending)
1266 { 1987 {
1267 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1268 1991
1269 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1995 }
1996#endif
1273 1997
1274#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1275 if (async_pending) 1999 if (async_pending)
1276 { 2000 {
1277 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1278 2004
1279 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1280 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1281 { 2007 {
1282 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1283 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1284 } 2011 }
1285 } 2012 }
1286#endif 2013#endif
1287} 2014}
1288 2015
1289/*****************************************************************************/ 2016/*****************************************************************************/
1290 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1291static void 2035static void
1292ev_sighandler (int signum) 2036ev_sighandler (int signum)
1293{ 2037{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 2038#ifdef _WIN32
1299 signal (signum, ev_sighandler); 2039 signal (signum, ev_sighandler);
1300#endif 2040#endif
1301 2041
1302 signals [signum - 1].pending = 1; 2042 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 2043}
1305 2044
1306void noinline 2045void noinline
1307ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1308{ 2047{
1309 WL w; 2048 WL w;
1310 2049
1311 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1312 return; 2051 return;
1313 2052
1314 --signum; 2053 --signum;
1315 2054
1316#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
… …
1320 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1321 return; 2060 return;
1322#endif 2061#endif
1323 2062
1324 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1325 2065
1326 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1328} 2068}
1329 2069
… …
1345 break; 2085 break;
1346 } 2086 }
1347} 2087}
1348#endif 2088#endif
1349 2089
2090#endif
2091
1350/*****************************************************************************/ 2092/*****************************************************************************/
1351 2093
2094#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 2096
1356static ev_signal childev; 2097static ev_signal childev;
1357 2098
1358#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1365{ 2106{
1366 ev_child *w; 2107 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 2109
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 2111 {
1371 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1373 { 2114 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1399 /* make sure we are called again until all children have been reaped */ 2140 /* make sure we are called again until all children have been reaped */
1400 /* we need to do it this way so that the callback gets called before we continue */ 2141 /* we need to do it this way so that the callback gets called before we continue */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2143
1403 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2147}
1407 2148
1408#endif 2149#endif
1409 2150
1410/*****************************************************************************/ 2151/*****************************************************************************/
1411 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1412#if EV_USE_PORT 2156#if EV_USE_PORT
1413# include "ev_port.c" 2157# include "ev_port.c"
1414#endif 2158#endif
1415#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1423#endif 2167#endif
1424#if EV_USE_SELECT 2168#if EV_USE_SELECT
1425# include "ev_select.c" 2169# include "ev_select.c"
1426#endif 2170#endif
1427 2171
1428int 2172int ecb_cold
1429ev_version_major (void) 2173ev_version_major (void) EV_THROW
1430{ 2174{
1431 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1432} 2176}
1433 2177
1434int 2178int ecb_cold
1435ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1436{ 2180{
1437 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1438} 2182}
1439 2183
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2185int inline_size ecb_cold
1442enable_secure (void) 2186enable_secure (void)
1443{ 2187{
1444#ifdef _WIN32 2188#ifdef _WIN32
1445 return 0; 2189 return 0;
1446#else 2190#else
1447 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2192 || getgid () != getegid ();
1449#endif 2193#endif
1450} 2194}
1451 2195
1452unsigned int 2196unsigned int ecb_cold
1453ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1454{ 2198{
1455 unsigned int flags = 0; 2199 unsigned int flags = 0;
1456 2200
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1458 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2206
1463 return flags; 2207 return flags;
1464} 2208}
1465 2209
1466unsigned int 2210unsigned int ecb_cold
1467ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1468{ 2212{
1469 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1470 2214
1471#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1472 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1476#ifdef __APPLE__ 2220#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2221 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif
1481 2228
1482 return flags; 2229 return flags;
1483} 2230}
1484 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1485unsigned int 2244unsigned int
1486ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1487{ 2246{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 return backend;
1489
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1491 /* please fix it and tell me how to detect the fix */
1492 flags &= ~EVBACKEND_EPOLL;
1493
1494 return flags;
1495} 2248}
1496 2249
2250#if EV_FEATURE_API
1497unsigned int 2251unsigned int
1498ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1499{ 2253{
1500 return backend; 2254 return loop_count;
1501} 2255}
1502 2256
1503#if EV_MINIMAL < 2
1504unsigned int 2257unsigned int
1505ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1506{
1507 return loop_count;
1508}
1509
1510unsigned int
1511ev_loop_depth (EV_P)
1512{ 2259{
1513 return loop_depth; 2260 return loop_depth;
1514} 2261}
1515 2262
1516void 2263void
1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1518{ 2265{
1519 io_blocktime = interval; 2266 io_blocktime = interval;
1520} 2267}
1521 2268
1522void 2269void
1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1524{ 2271{
1525 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1526} 2273}
1527 2274
1528void 2275void
1529ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1530{ 2277{
1531 userdata = data; 2278 userdata = data;
1532} 2279}
1533 2280
1534void * 2281void *
1535ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1536{ 2283{
1537 return userdata; 2284 return userdata;
1538} 2285}
1539 2286
2287void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1541{ 2289{
1542 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1543} 2291}
1544 2292
2293void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1546{ 2295{
1547 release_cb = release; 2296 release_cb = release;
1548 acquire_cb = acquire; 2297 acquire_cb = acquire;
1549} 2298}
1550#endif 2299#endif
1551 2300
1552/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2302static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1555{ 2304{
1556 if (!backend) 2305 if (!backend)
1557 { 2306 {
2307 origflags = flags;
2308
1558#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1559 if (!have_realtime) 2310 if (!have_realtime)
1560 { 2311 {
1561 struct timespec ts; 2312 struct timespec ts;
1562 2313
… …
1584 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2336 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2339
1589 ev_rt_now = ev_time (); 2340 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2341 mn_now = get_clock ();
1591 now_floor = mn_now; 2342 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2343 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2344#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2345 invoke_cb = ev_invoke_pending;
1595#endif 2346#endif
1596 2347
1597 io_blocktime = 0.; 2348 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2349 timeout_blocktime = 0.;
1599 backend = 0; 2350 backend = 0;
1600 backend_fd = -1; 2351 backend_fd = -1;
1601 sig_pending = 0; 2352 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2354 async_pending = 0;
1604#endif 2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 2358#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2360#endif
1608#if EV_USE_SIGNALFD 2361#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2363#endif
1611 2364
1612 if (!(flags & 0x0000ffffU)) 2365 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1614 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1615#if EV_USE_PORT 2371#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2373#endif
1618#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2385#endif
1630 2386
1631 ev_prepare_init (&pending_w, pendingcb); 2387 ev_prepare_init (&pending_w, pendingcb);
1632 2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2390 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1635 } 2393 }
1636} 2394}
1637 2395
1638/* free up a loop structure */ 2396/* free up a loop structure */
1639static void noinline 2397void ecb_cold
1640loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1641{ 2399{
1642 int i; 2400 int i;
2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
1643 2424
1644 if (ev_is_active (&pipe_w)) 2425 if (ev_is_active (&pipe_w))
1645 { 2426 {
1646 /*ev_ref (EV_A);*/ 2427 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1669#endif 2450#endif
1670 2451
1671 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1672 close (backend_fd); 2453 close (backend_fd);
1673 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1674#if EV_USE_PORT 2458#if EV_USE_PORT
1675 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1676#endif 2460#endif
1677#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1678 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1705 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1706#endif 2490#endif
1707#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1708 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1709#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1710 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1711 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1712#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1713 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1714#endif 2501#endif
1715 2502
1716 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1717} 2513}
1718 2514
1719#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1720inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1721#endif 2517#endif
… …
1736 infy_fork (EV_A); 2532 infy_fork (EV_A);
1737#endif 2533#endif
1738 2534
1739 if (ev_is_active (&pipe_w)) 2535 if (ev_is_active (&pipe_w))
1740 { 2536 {
1741 /* this "locks" the handlers against writing to the pipe */ 2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1742 /* while we modify the fd vars */
1743 sig_pending = 1;
1744#if EV_ASYNC_ENABLE
1745 async_pending = 1;
1746#endif
1747 2538
1748 ev_ref (EV_A); 2539 ev_ref (EV_A);
1749 ev_io_stop (EV_A_ &pipe_w); 2540 ev_io_stop (EV_A_ &pipe_w);
1750 2541
1751#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
… …
1757 { 2548 {
1758 EV_WIN32_CLOSE_FD (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1759 EV_WIN32_CLOSE_FD (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1760 } 2551 }
1761 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1762 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1763 /* now iterate over everything, in case we missed something */ 2555 /* iterate over everything, in case we missed something before */
1764 pipecb (EV_A_ &pipe_w, EV_READ); 2556 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2557#endif
1765 } 2558 }
1766 2559
1767 postfork = 0; 2560 postfork = 0;
1768} 2561}
1769 2562
1770#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1771 2564
1772struct ev_loop * 2565struct ev_loop * ecb_cold
1773ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1774{ 2567{
1775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1776 2569
1777 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1778 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1779 2572
1780 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1781 return EV_A; 2574 return EV_A;
1782 2575
2576 ev_free (EV_A);
1783 return 0; 2577 return 0;
1784} 2578}
1785 2579
1786void
1787ev_loop_destroy (EV_P)
1788{
1789 loop_destroy (EV_A);
1790 ev_free (loop);
1791}
1792
1793void
1794ev_loop_fork (EV_P)
1795{
1796 postfork = 1; /* must be in line with ev_default_fork */
1797}
1798#endif /* multiplicity */ 2580#endif /* multiplicity */
1799 2581
1800#if EV_VERIFY 2582#if EV_VERIFY
1801static void noinline 2583static void noinline ecb_cold
1802verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1803{ 2585{
1804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1805 2587
1806 if (w->pending) 2588 if (w->pending)
1807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1808} 2590}
1809 2591
1810static void noinline 2592static void noinline ecb_cold
1811verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1812{ 2594{
1813 int i; 2595 int i;
1814 2596
1815 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1820 2602
1821 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1822 } 2604 }
1823} 2605}
1824 2606
1825static void noinline 2607static void noinline ecb_cold
1826array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1827{ 2609{
1828 while (cnt--) 2610 while (cnt--)
1829 { 2611 {
1830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1831 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1832 } 2614 }
1833} 2615}
1834#endif 2616#endif
1835 2617
1836#if EV_MINIMAL < 2 2618#if EV_FEATURE_API
1837void 2619void ecb_cold
1838ev_loop_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
1839{ 2621{
1840#if EV_VERIFY 2622#if EV_VERIFY
1841 int i; 2623 int i;
1842 WL w; 2624 WL w, w2;
1843 2625
1844 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1845 2627
1846 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1847 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1849 2631
1850 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1851 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1852 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1853 { 2638 {
1854 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1855 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1856 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1857 } 2649 }
2650 }
1858 2651
1859 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1860 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1861 2654
1862#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1877#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1878 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1879 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1880#endif 2673#endif
1881 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1882#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1883 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1884 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1885#endif 2683#endif
1886 2684
2685#if EV_PREPARE_ENABLE
1887 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1888 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1889 2689
2690#if EV_CHECK_ENABLE
1890 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1891 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1892 2694
1893# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1894 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1895 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1896# endif 2700# endif
1897#endif 2701#endif
1898} 2702}
1899#endif 2703#endif
1900 2704
1901#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1902struct ev_loop * 2706struct ev_loop * ecb_cold
1903ev_default_loop_init (unsigned int flags)
1904#else 2707#else
1905int 2708int
2709#endif
1906ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1907#endif
1908{ 2711{
1909 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1910 { 2713 {
1911#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1912 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1916 2719
1917 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1918 2721
1919 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1920 { 2723 {
1921#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1922 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1923 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1924 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1925 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1926#endif 2729#endif
… …
1931 2734
1932 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1933} 2736}
1934 2737
1935void 2738void
1936ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1937{ 2740{
1938#if EV_MULTIPLICITY 2741 postfork = 1;
1939 EV_P = ev_default_loop_ptr;
1940#endif
1941
1942 ev_default_loop_ptr = 0;
1943
1944#ifndef _WIN32
1945 ev_ref (EV_A); /* child watcher */
1946 ev_signal_stop (EV_A_ &childev);
1947#endif
1948
1949 loop_destroy (EV_A);
1950}
1951
1952void
1953ev_default_fork (void)
1954{
1955#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr;
1957#endif
1958
1959 postfork = 1; /* must be in line with ev_loop_fork */
1960} 2742}
1961 2743
1962/*****************************************************************************/ 2744/*****************************************************************************/
1963 2745
1964void 2746void
… …
1966{ 2748{
1967 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1968} 2750}
1969 2751
1970unsigned int 2752unsigned int
1971ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
1972{ 2754{
1973 int pri; 2755 int pri;
1974 unsigned int count = 0; 2756 unsigned int count = 0;
1975 2757
1976 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
… …
1980} 2762}
1981 2763
1982void noinline 2764void noinline
1983ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
1984{ 2766{
1985 int pri; 2767 pendingpri = NUMPRI;
1986 2768
1987 for (pri = NUMPRI; pri--; ) 2769 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2770 {
2771 --pendingpri;
2772
1988 while (pendingcnt [pri]) 2773 while (pendingcnt [pendingpri])
1989 { 2774 {
1990 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2775 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1991 2776
1992 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1993 /* ^ this is no longer true, as pending_w could be here */
1994
1995 p->w->pending = 0; 2777 p->w->pending = 0;
1996 EV_CB_INVOKE (p->w, p->events); 2778 EV_CB_INVOKE (p->w, p->events);
1997 EV_FREQUENT_CHECK; 2779 EV_FREQUENT_CHECK;
1998 } 2780 }
2781 }
1999} 2782}
2000 2783
2001#if EV_IDLE_ENABLE 2784#if EV_IDLE_ENABLE
2002/* make idle watchers pending. this handles the "call-idle */ 2785/* make idle watchers pending. this handles the "call-idle */
2003/* only when higher priorities are idle" logic */ 2786/* only when higher priorities are idle" logic */
… …
2055 EV_FREQUENT_CHECK; 2838 EV_FREQUENT_CHECK;
2056 feed_reverse (EV_A_ (W)w); 2839 feed_reverse (EV_A_ (W)w);
2057 } 2840 }
2058 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2841 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2059 2842
2060 feed_reverse_done (EV_A_ EV_TIMEOUT); 2843 feed_reverse_done (EV_A_ EV_TIMER);
2061 } 2844 }
2062} 2845}
2063 2846
2064#if EV_PERIODIC_ENABLE 2847#if EV_PERIODIC_ENABLE
2848
2849static void noinline
2850periodic_recalc (EV_P_ ev_periodic *w)
2851{
2852 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2853 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2854
2855 /* the above almost always errs on the low side */
2856 while (at <= ev_rt_now)
2857 {
2858 ev_tstamp nat = at + w->interval;
2859
2860 /* when resolution fails us, we use ev_rt_now */
2861 if (expect_false (nat == at))
2862 {
2863 at = ev_rt_now;
2864 break;
2865 }
2866
2867 at = nat;
2868 }
2869
2870 ev_at (w) = at;
2871}
2872
2065/* make periodics pending */ 2873/* make periodics pending */
2066inline_size void 2874inline_size void
2067periodics_reify (EV_P) 2875periodics_reify (EV_P)
2068{ 2876{
2069 EV_FREQUENT_CHECK; 2877 EV_FREQUENT_CHECK;
2070 2878
2071 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2879 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2072 { 2880 {
2073 int feed_count = 0;
2074
2075 do 2881 do
2076 { 2882 {
2077 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2883 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2078 2884
2079 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2885 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2088 ANHE_at_cache (periodics [HEAP0]); 2894 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
2090 } 2896 }
2091 else if (w->interval) 2897 else if (w->interval)
2092 { 2898 {
2093 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2899 periodic_recalc (EV_A_ w);
2094 /* if next trigger time is not sufficiently in the future, put it there */
2095 /* this might happen because of floating point inexactness */
2096 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2097 {
2098 ev_at (w) += w->interval;
2099
2100 /* if interval is unreasonably low we might still have a time in the past */
2101 /* so correct this. this will make the periodic very inexact, but the user */
2102 /* has effectively asked to get triggered more often than possible */
2103 if (ev_at (w) < ev_rt_now)
2104 ev_at (w) = ev_rt_now;
2105 }
2106
2107 ANHE_at_cache (periodics [HEAP0]); 2900 ANHE_at_cache (periodics [HEAP0]);
2108 downheap (periodics, periodiccnt, HEAP0); 2901 downheap (periodics, periodiccnt, HEAP0);
2109 } 2902 }
2110 else 2903 else
2111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2904 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2118 feed_reverse_done (EV_A_ EV_PERIODIC); 2911 feed_reverse_done (EV_A_ EV_PERIODIC);
2119 } 2912 }
2120} 2913}
2121 2914
2122/* simply recalculate all periodics */ 2915/* simply recalculate all periodics */
2123/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2916/* TODO: maybe ensure that at least one event happens when jumping forward? */
2124static void noinline 2917static void noinline ecb_cold
2125periodics_reschedule (EV_P) 2918periodics_reschedule (EV_P)
2126{ 2919{
2127 int i; 2920 int i;
2128 2921
2129 /* adjust periodics after time jump */ 2922 /* adjust periodics after time jump */
… …
2132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2925 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2133 2926
2134 if (w->reschedule_cb) 2927 if (w->reschedule_cb)
2135 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2928 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2136 else if (w->interval) 2929 else if (w->interval)
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2930 periodic_recalc (EV_A_ w);
2138 2931
2139 ANHE_at_cache (periodics [i]); 2932 ANHE_at_cache (periodics [i]);
2140 } 2933 }
2141 2934
2142 reheap (periodics, periodiccnt); 2935 reheap (periodics, periodiccnt);
2143} 2936}
2144#endif 2937#endif
2145 2938
2146/* adjust all timers by a given offset */ 2939/* adjust all timers by a given offset */
2147static void noinline 2940static void noinline ecb_cold
2148timers_reschedule (EV_P_ ev_tstamp adjust) 2941timers_reschedule (EV_P_ ev_tstamp adjust)
2149{ 2942{
2150 int i; 2943 int i;
2151 2944
2152 for (i = 0; i < timercnt; ++i) 2945 for (i = 0; i < timercnt; ++i)
… …
2156 ANHE_at_cache (*he); 2949 ANHE_at_cache (*he);
2157 } 2950 }
2158} 2951}
2159 2952
2160/* fetch new monotonic and realtime times from the kernel */ 2953/* fetch new monotonic and realtime times from the kernel */
2161/* also detetc if there was a timejump, and act accordingly */ 2954/* also detect if there was a timejump, and act accordingly */
2162inline_speed void 2955inline_speed void
2163time_update (EV_P_ ev_tstamp max_block) 2956time_update (EV_P_ ev_tstamp max_block)
2164{ 2957{
2165#if EV_USE_MONOTONIC 2958#if EV_USE_MONOTONIC
2166 if (expect_true (have_monotonic)) 2959 if (expect_true (have_monotonic))
… …
2189 * doesn't hurt either as we only do this on time-jumps or 2982 * doesn't hurt either as we only do this on time-jumps or
2190 * in the unlikely event of having been preempted here. 2983 * in the unlikely event of having been preempted here.
2191 */ 2984 */
2192 for (i = 4; --i; ) 2985 for (i = 4; --i; )
2193 { 2986 {
2987 ev_tstamp diff;
2194 rtmn_diff = ev_rt_now - mn_now; 2988 rtmn_diff = ev_rt_now - mn_now;
2195 2989
2990 diff = odiff - rtmn_diff;
2991
2196 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2992 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2197 return; /* all is well */ 2993 return; /* all is well */
2198 2994
2199 ev_rt_now = ev_time (); 2995 ev_rt_now = ev_time ();
2200 mn_now = get_clock (); 2996 mn_now = get_clock ();
2201 now_floor = mn_now; 2997 now_floor = mn_now;
… …
2223 3019
2224 mn_now = ev_rt_now; 3020 mn_now = ev_rt_now;
2225 } 3021 }
2226} 3022}
2227 3023
2228void 3024int
2229ev_loop (EV_P_ int flags) 3025ev_run (EV_P_ int flags)
2230{ 3026{
2231#if EV_MINIMAL < 2 3027#if EV_FEATURE_API
2232 ++loop_depth; 3028 ++loop_depth;
2233#endif 3029#endif
2234 3030
2235 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3031 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2236 3032
2237 loop_done = EVUNLOOP_CANCEL; 3033 loop_done = EVBREAK_CANCEL;
2238 3034
2239 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3035 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2240 3036
2241 do 3037 do
2242 { 3038 {
2243#if EV_VERIFY >= 2 3039#if EV_VERIFY >= 2
2244 ev_loop_verify (EV_A); 3040 ev_verify (EV_A);
2245#endif 3041#endif
2246 3042
2247#ifndef _WIN32 3043#ifndef _WIN32
2248 if (expect_false (curpid)) /* penalise the forking check even more */ 3044 if (expect_false (curpid)) /* penalise the forking check even more */
2249 if (expect_false (getpid () != curpid)) 3045 if (expect_false (getpid () != curpid))
… …
2261 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2262 EV_INVOKE_PENDING; 3058 EV_INVOKE_PENDING;
2263 } 3059 }
2264#endif 3060#endif
2265 3061
3062#if EV_PREPARE_ENABLE
2266 /* queue prepare watchers (and execute them) */ 3063 /* queue prepare watchers (and execute them) */
2267 if (expect_false (preparecnt)) 3064 if (expect_false (preparecnt))
2268 { 3065 {
2269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2270 EV_INVOKE_PENDING; 3067 EV_INVOKE_PENDING;
2271 } 3068 }
3069#endif
2272 3070
2273 if (expect_false (loop_done)) 3071 if (expect_false (loop_done))
2274 break; 3072 break;
2275 3073
2276 /* we might have forked, so reify kernel state if necessary */ 3074 /* we might have forked, so reify kernel state if necessary */
… …
2283 /* calculate blocking time */ 3081 /* calculate blocking time */
2284 { 3082 {
2285 ev_tstamp waittime = 0.; 3083 ev_tstamp waittime = 0.;
2286 ev_tstamp sleeptime = 0.; 3084 ev_tstamp sleeptime = 0.;
2287 3085
3086 /* remember old timestamp for io_blocktime calculation */
3087 ev_tstamp prev_mn_now = mn_now;
3088
3089 /* update time to cancel out callback processing overhead */
3090 time_update (EV_A_ 1e100);
3091
3092 /* from now on, we want a pipe-wake-up */
3093 pipe_write_wanted = 1;
3094
3095 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3096
2288 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3097 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2289 { 3098 {
2290 /* remember old timestamp for io_blocktime calculation */
2291 ev_tstamp prev_mn_now = mn_now;
2292
2293 /* update time to cancel out callback processing overhead */
2294 time_update (EV_A_ 1e100);
2295
2296 waittime = MAX_BLOCKTIME; 3099 waittime = MAX_BLOCKTIME;
2297 3100
2298 if (timercnt) 3101 if (timercnt)
2299 { 3102 {
2300 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2301 if (waittime > to) waittime = to; 3104 if (waittime > to) waittime = to;
2302 } 3105 }
2303 3106
2304#if EV_PERIODIC_ENABLE 3107#if EV_PERIODIC_ENABLE
2305 if (periodiccnt) 3108 if (periodiccnt)
2306 { 3109 {
2307 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3110 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2308 if (waittime > to) waittime = to; 3111 if (waittime > to) waittime = to;
2309 } 3112 }
2310#endif 3113#endif
2311 3114
2312 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3115 /* don't let timeouts decrease the waittime below timeout_blocktime */
2313 if (expect_false (waittime < timeout_blocktime)) 3116 if (expect_false (waittime < timeout_blocktime))
2314 waittime = timeout_blocktime; 3117 waittime = timeout_blocktime;
3118
3119 /* at this point, we NEED to wait, so we have to ensure */
3120 /* to pass a minimum nonzero value to the backend */
3121 if (expect_false (waittime < backend_mintime))
3122 waittime = backend_mintime;
2315 3123
2316 /* extra check because io_blocktime is commonly 0 */ 3124 /* extra check because io_blocktime is commonly 0 */
2317 if (expect_false (io_blocktime)) 3125 if (expect_false (io_blocktime))
2318 { 3126 {
2319 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3127 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2320 3128
2321 if (sleeptime > waittime - backend_fudge) 3129 if (sleeptime > waittime - backend_mintime)
2322 sleeptime = waittime - backend_fudge; 3130 sleeptime = waittime - backend_mintime;
2323 3131
2324 if (expect_true (sleeptime > 0.)) 3132 if (expect_true (sleeptime > 0.))
2325 { 3133 {
2326 ev_sleep (sleeptime); 3134 ev_sleep (sleeptime);
2327 waittime -= sleeptime; 3135 waittime -= sleeptime;
2328 } 3136 }
2329 } 3137 }
2330 } 3138 }
2331 3139
2332#if EV_MINIMAL < 2 3140#if EV_FEATURE_API
2333 ++loop_count; 3141 ++loop_count;
2334#endif 3142#endif
2335 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3143 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2336 backend_poll (EV_A_ waittime); 3144 backend_poll (EV_A_ waittime);
2337 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3145 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3146
3147 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3148
3149 ECB_MEMORY_FENCE_ACQUIRE;
3150 if (pipe_write_skipped)
3151 {
3152 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3153 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3154 }
3155
2338 3156
2339 /* update ev_rt_now, do magic */ 3157 /* update ev_rt_now, do magic */
2340 time_update (EV_A_ waittime + sleeptime); 3158 time_update (EV_A_ waittime + sleeptime);
2341 } 3159 }
2342 3160
… …
2349#if EV_IDLE_ENABLE 3167#if EV_IDLE_ENABLE
2350 /* queue idle watchers unless other events are pending */ 3168 /* queue idle watchers unless other events are pending */
2351 idle_reify (EV_A); 3169 idle_reify (EV_A);
2352#endif 3170#endif
2353 3171
3172#if EV_CHECK_ENABLE
2354 /* queue check watchers, to be executed first */ 3173 /* queue check watchers, to be executed first */
2355 if (expect_false (checkcnt)) 3174 if (expect_false (checkcnt))
2356 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3175 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3176#endif
2357 3177
2358 EV_INVOKE_PENDING; 3178 EV_INVOKE_PENDING;
2359 } 3179 }
2360 while (expect_true ( 3180 while (expect_true (
2361 activecnt 3181 activecnt
2362 && !loop_done 3182 && !loop_done
2363 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3183 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2364 )); 3184 ));
2365 3185
2366 if (loop_done == EVUNLOOP_ONE) 3186 if (loop_done == EVBREAK_ONE)
2367 loop_done = EVUNLOOP_CANCEL; 3187 loop_done = EVBREAK_CANCEL;
2368 3188
2369#if EV_MINIMAL < 2 3189#if EV_FEATURE_API
2370 --loop_depth; 3190 --loop_depth;
2371#endif 3191#endif
3192
3193 return activecnt;
2372} 3194}
2373 3195
2374void 3196void
2375ev_unloop (EV_P_ int how) 3197ev_break (EV_P_ int how) EV_THROW
2376{ 3198{
2377 loop_done = how; 3199 loop_done = how;
2378} 3200}
2379 3201
2380void 3202void
2381ev_ref (EV_P) 3203ev_ref (EV_P) EV_THROW
2382{ 3204{
2383 ++activecnt; 3205 ++activecnt;
2384} 3206}
2385 3207
2386void 3208void
2387ev_unref (EV_P) 3209ev_unref (EV_P) EV_THROW
2388{ 3210{
2389 --activecnt; 3211 --activecnt;
2390} 3212}
2391 3213
2392void 3214void
2393ev_now_update (EV_P) 3215ev_now_update (EV_P) EV_THROW
2394{ 3216{
2395 time_update (EV_A_ 1e100); 3217 time_update (EV_A_ 1e100);
2396} 3218}
2397 3219
2398void 3220void
2399ev_suspend (EV_P) 3221ev_suspend (EV_P) EV_THROW
2400{ 3222{
2401 ev_now_update (EV_A); 3223 ev_now_update (EV_A);
2402} 3224}
2403 3225
2404void 3226void
2405ev_resume (EV_P) 3227ev_resume (EV_P) EV_THROW
2406{ 3228{
2407 ev_tstamp mn_prev = mn_now; 3229 ev_tstamp mn_prev = mn_now;
2408 3230
2409 ev_now_update (EV_A); 3231 ev_now_update (EV_A);
2410 timers_reschedule (EV_A_ mn_now - mn_prev); 3232 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2449 w->pending = 0; 3271 w->pending = 0;
2450 } 3272 }
2451} 3273}
2452 3274
2453int 3275int
2454ev_clear_pending (EV_P_ void *w) 3276ev_clear_pending (EV_P_ void *w) EV_THROW
2455{ 3277{
2456 W w_ = (W)w; 3278 W w_ = (W)w;
2457 int pending = w_->pending; 3279 int pending = w_->pending;
2458 3280
2459 if (expect_true (pending)) 3281 if (expect_true (pending))
… …
2492} 3314}
2493 3315
2494/*****************************************************************************/ 3316/*****************************************************************************/
2495 3317
2496void noinline 3318void noinline
2497ev_io_start (EV_P_ ev_io *w) 3319ev_io_start (EV_P_ ev_io *w) EV_THROW
2498{ 3320{
2499 int fd = w->fd; 3321 int fd = w->fd;
2500 3322
2501 if (expect_false (ev_is_active (w))) 3323 if (expect_false (ev_is_active (w)))
2502 return; 3324 return;
2503 3325
2504 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3326 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2505 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3327 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2506 3328
2507 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
2508 3330
2509 ev_start (EV_A_ (W)w, 1); 3331 ev_start (EV_A_ (W)w, 1);
2510 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3332 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2511 wlist_add (&anfds[fd].head, (WL)w); 3333 wlist_add (&anfds[fd].head, (WL)w);
2512 3334
3335 /* common bug, apparently */
3336 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3337
2513 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3338 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2514 w->events &= ~EV__IOFDSET; 3339 w->events &= ~EV__IOFDSET;
2515 3340
2516 EV_FREQUENT_CHECK; 3341 EV_FREQUENT_CHECK;
2517} 3342}
2518 3343
2519void noinline 3344void noinline
2520ev_io_stop (EV_P_ ev_io *w) 3345ev_io_stop (EV_P_ ev_io *w) EV_THROW
2521{ 3346{
2522 clear_pending (EV_A_ (W)w); 3347 clear_pending (EV_A_ (W)w);
2523 if (expect_false (!ev_is_active (w))) 3348 if (expect_false (!ev_is_active (w)))
2524 return; 3349 return;
2525 3350
… …
2528 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
2529 3354
2530 wlist_del (&anfds[w->fd].head, (WL)w); 3355 wlist_del (&anfds[w->fd].head, (WL)w);
2531 ev_stop (EV_A_ (W)w); 3356 ev_stop (EV_A_ (W)w);
2532 3357
2533 fd_change (EV_A_ w->fd, 1); 3358 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2534 3359
2535 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
2536} 3361}
2537 3362
2538void noinline 3363void noinline
2539ev_timer_start (EV_P_ ev_timer *w) 3364ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2540{ 3365{
2541 if (expect_false (ev_is_active (w))) 3366 if (expect_false (ev_is_active (w)))
2542 return; 3367 return;
2543 3368
2544 ev_at (w) += mn_now; 3369 ev_at (w) += mn_now;
… …
2558 3383
2559 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3384 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2560} 3385}
2561 3386
2562void noinline 3387void noinline
2563ev_timer_stop (EV_P_ ev_timer *w) 3388ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2564{ 3389{
2565 clear_pending (EV_A_ (W)w); 3390 clear_pending (EV_A_ (W)w);
2566 if (expect_false (!ev_is_active (w))) 3391 if (expect_false (!ev_is_active (w)))
2567 return; 3392 return;
2568 3393
… …
2580 timers [active] = timers [timercnt + HEAP0]; 3405 timers [active] = timers [timercnt + HEAP0];
2581 adjustheap (timers, timercnt, active); 3406 adjustheap (timers, timercnt, active);
2582 } 3407 }
2583 } 3408 }
2584 3409
2585 EV_FREQUENT_CHECK;
2586
2587 ev_at (w) -= mn_now; 3410 ev_at (w) -= mn_now;
2588 3411
2589 ev_stop (EV_A_ (W)w); 3412 ev_stop (EV_A_ (W)w);
3413
3414 EV_FREQUENT_CHECK;
2590} 3415}
2591 3416
2592void noinline 3417void noinline
2593ev_timer_again (EV_P_ ev_timer *w) 3418ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2594{ 3419{
2595 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
3421
3422 clear_pending (EV_A_ (W)w);
2596 3423
2597 if (ev_is_active (w)) 3424 if (ev_is_active (w))
2598 { 3425 {
2599 if (w->repeat) 3426 if (w->repeat)
2600 { 3427 {
… …
2613 3440
2614 EV_FREQUENT_CHECK; 3441 EV_FREQUENT_CHECK;
2615} 3442}
2616 3443
2617ev_tstamp 3444ev_tstamp
2618ev_timer_remaining (EV_P_ ev_timer *w) 3445ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2619{ 3446{
2620 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3447 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2621} 3448}
2622 3449
2623#if EV_PERIODIC_ENABLE 3450#if EV_PERIODIC_ENABLE
2624void noinline 3451void noinline
2625ev_periodic_start (EV_P_ ev_periodic *w) 3452ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2626{ 3453{
2627 if (expect_false (ev_is_active (w))) 3454 if (expect_false (ev_is_active (w)))
2628 return; 3455 return;
2629 3456
2630 if (w->reschedule_cb) 3457 if (w->reschedule_cb)
2631 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3458 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2632 else if (w->interval) 3459 else if (w->interval)
2633 { 3460 {
2634 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3461 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2635 /* this formula differs from the one in periodic_reify because we do not always round up */ 3462 periodic_recalc (EV_A_ w);
2636 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2637 } 3463 }
2638 else 3464 else
2639 ev_at (w) = w->offset; 3465 ev_at (w) = w->offset;
2640 3466
2641 EV_FREQUENT_CHECK; 3467 EV_FREQUENT_CHECK;
… …
2651 3477
2652 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3478 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2653} 3479}
2654 3480
2655void noinline 3481void noinline
2656ev_periodic_stop (EV_P_ ev_periodic *w) 3482ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2657{ 3483{
2658 clear_pending (EV_A_ (W)w); 3484 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3485 if (expect_false (!ev_is_active (w)))
2660 return; 3486 return;
2661 3487
… …
2673 periodics [active] = periodics [periodiccnt + HEAP0]; 3499 periodics [active] = periodics [periodiccnt + HEAP0];
2674 adjustheap (periodics, periodiccnt, active); 3500 adjustheap (periodics, periodiccnt, active);
2675 } 3501 }
2676 } 3502 }
2677 3503
2678 EV_FREQUENT_CHECK;
2679
2680 ev_stop (EV_A_ (W)w); 3504 ev_stop (EV_A_ (W)w);
3505
3506 EV_FREQUENT_CHECK;
2681} 3507}
2682 3508
2683void noinline 3509void noinline
2684ev_periodic_again (EV_P_ ev_periodic *w) 3510ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2685{ 3511{
2686 /* TODO: use adjustheap and recalculation */ 3512 /* TODO: use adjustheap and recalculation */
2687 ev_periodic_stop (EV_A_ w); 3513 ev_periodic_stop (EV_A_ w);
2688 ev_periodic_start (EV_A_ w); 3514 ev_periodic_start (EV_A_ w);
2689} 3515}
… …
2691 3517
2692#ifndef SA_RESTART 3518#ifndef SA_RESTART
2693# define SA_RESTART 0 3519# define SA_RESTART 0
2694#endif 3520#endif
2695 3521
3522#if EV_SIGNAL_ENABLE
3523
2696void noinline 3524void noinline
2697ev_signal_start (EV_P_ ev_signal *w) 3525ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2698{ 3526{
2699 if (expect_false (ev_is_active (w))) 3527 if (expect_false (ev_is_active (w)))
2700 return; 3528 return;
2701 3529
2702 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3530 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2746 if (!((WL)w)->next) 3574 if (!((WL)w)->next)
2747# if EV_USE_SIGNALFD 3575# if EV_USE_SIGNALFD
2748 if (sigfd < 0) /*TODO*/ 3576 if (sigfd < 0) /*TODO*/
2749# endif 3577# endif
2750 { 3578 {
2751# if _WIN32 3579# ifdef _WIN32
2752 evpipe_init (EV_A); 3580 evpipe_init (EV_A);
2753 3581
2754 signal (w->signum, ev_sighandler); 3582 signal (w->signum, ev_sighandler);
2755# else 3583# else
2756 struct sigaction sa; 3584 struct sigaction sa;
… …
2760 sa.sa_handler = ev_sighandler; 3588 sa.sa_handler = ev_sighandler;
2761 sigfillset (&sa.sa_mask); 3589 sigfillset (&sa.sa_mask);
2762 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3590 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2763 sigaction (w->signum, &sa, 0); 3591 sigaction (w->signum, &sa, 0);
2764 3592
3593 if (origflags & EVFLAG_NOSIGMASK)
3594 {
2765 sigemptyset (&sa.sa_mask); 3595 sigemptyset (&sa.sa_mask);
2766 sigaddset (&sa.sa_mask, w->signum); 3596 sigaddset (&sa.sa_mask, w->signum);
2767 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3597 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3598 }
2768#endif 3599#endif
2769 } 3600 }
2770 3601
2771 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2772} 3603}
2773 3604
2774void noinline 3605void noinline
2775ev_signal_stop (EV_P_ ev_signal *w) 3606ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2776{ 3607{
2777 clear_pending (EV_A_ (W)w); 3608 clear_pending (EV_A_ (W)w);
2778 if (expect_false (!ev_is_active (w))) 3609 if (expect_false (!ev_is_active (w)))
2779 return; 3610 return;
2780 3611
… …
2789 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3620 signals [w->signum - 1].loop = 0; /* unattach from signal */
2790#endif 3621#endif
2791#if EV_USE_SIGNALFD 3622#if EV_USE_SIGNALFD
2792 if (sigfd >= 0) 3623 if (sigfd >= 0)
2793 { 3624 {
2794 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3625 sigset_t ss;
3626
3627 sigemptyset (&ss);
3628 sigaddset (&ss, w->signum);
2795 sigdelset (&sigfd_set, w->signum); 3629 sigdelset (&sigfd_set, w->signum);
3630
2796 signalfd (sigfd, &sigfd_set, 0); 3631 signalfd (sigfd, &sigfd_set, 0);
2797 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3632 sigprocmask (SIG_UNBLOCK, &ss, 0);
2798 /*TODO: maybe unblock signal? */
2799 } 3633 }
2800 else 3634 else
2801#endif 3635#endif
2802 signal (w->signum, SIG_DFL); 3636 signal (w->signum, SIG_DFL);
2803 } 3637 }
2804 3638
2805 EV_FREQUENT_CHECK; 3639 EV_FREQUENT_CHECK;
2806} 3640}
2807 3641
3642#endif
3643
3644#if EV_CHILD_ENABLE
3645
2808void 3646void
2809ev_child_start (EV_P_ ev_child *w) 3647ev_child_start (EV_P_ ev_child *w) EV_THROW
2810{ 3648{
2811#if EV_MULTIPLICITY 3649#if EV_MULTIPLICITY
2812 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3650 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2813#endif 3651#endif
2814 if (expect_false (ev_is_active (w))) 3652 if (expect_false (ev_is_active (w)))
2815 return; 3653 return;
2816 3654
2817 EV_FREQUENT_CHECK; 3655 EV_FREQUENT_CHECK;
2818 3656
2819 ev_start (EV_A_ (W)w, 1); 3657 ev_start (EV_A_ (W)w, 1);
2820 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3658 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2821 3659
2822 EV_FREQUENT_CHECK; 3660 EV_FREQUENT_CHECK;
2823} 3661}
2824 3662
2825void 3663void
2826ev_child_stop (EV_P_ ev_child *w) 3664ev_child_stop (EV_P_ ev_child *w) EV_THROW
2827{ 3665{
2828 clear_pending (EV_A_ (W)w); 3666 clear_pending (EV_A_ (W)w);
2829 if (expect_false (!ev_is_active (w))) 3667 if (expect_false (!ev_is_active (w)))
2830 return; 3668 return;
2831 3669
2832 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
2833 3671
2834 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3672 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2835 ev_stop (EV_A_ (W)w); 3673 ev_stop (EV_A_ (W)w);
2836 3674
2837 EV_FREQUENT_CHECK; 3675 EV_FREQUENT_CHECK;
2838} 3676}
3677
3678#endif
2839 3679
2840#if EV_STAT_ENABLE 3680#if EV_STAT_ENABLE
2841 3681
2842# ifdef _WIN32 3682# ifdef _WIN32
2843# undef lstat 3683# undef lstat
… …
2849#define MIN_STAT_INTERVAL 0.1074891 3689#define MIN_STAT_INTERVAL 0.1074891
2850 3690
2851static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3691static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2852 3692
2853#if EV_USE_INOTIFY 3693#if EV_USE_INOTIFY
2854# define EV_INOTIFY_BUFSIZE 8192 3694
3695/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3696# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2855 3697
2856static void noinline 3698static void noinline
2857infy_add (EV_P_ ev_stat *w) 3699infy_add (EV_P_ ev_stat *w)
2858{ 3700{
2859 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); 3701 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);
… …
2902 if (!pend || pend == path) 3744 if (!pend || pend == path)
2903 break; 3745 break;
2904 3746
2905 *pend = 0; 3747 *pend = 0;
2906 w->wd = inotify_add_watch (fs_fd, path, mask); 3748 w->wd = inotify_add_watch (fs_fd, path, mask);
2907 } 3749 }
2908 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3750 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2909 } 3751 }
2910 } 3752 }
2911 3753
2912 if (w->wd >= 0) 3754 if (w->wd >= 0)
2913 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3755 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2914 3756
2915 /* now re-arm timer, if required */ 3757 /* now re-arm timer, if required */
2916 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3758 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2917 ev_timer_again (EV_A_ &w->timer); 3759 ev_timer_again (EV_A_ &w->timer);
2918 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3760 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2926 3768
2927 if (wd < 0) 3769 if (wd < 0)
2928 return; 3770 return;
2929 3771
2930 w->wd = -2; 3772 w->wd = -2;
2931 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3773 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2932 wlist_del (&fs_hash [slot].head, (WL)w); 3774 wlist_del (&fs_hash [slot].head, (WL)w);
2933 3775
2934 /* remove this watcher, if others are watching it, they will rearm */ 3776 /* remove this watcher, if others are watching it, they will rearm */
2935 inotify_rm_watch (fs_fd, wd); 3777 inotify_rm_watch (fs_fd, wd);
2936} 3778}
… …
2938static void noinline 3780static void noinline
2939infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3781infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2940{ 3782{
2941 if (slot < 0) 3783 if (slot < 0)
2942 /* overflow, need to check for all hash slots */ 3784 /* overflow, need to check for all hash slots */
2943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3785 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2944 infy_wd (EV_A_ slot, wd, ev); 3786 infy_wd (EV_A_ slot, wd, ev);
2945 else 3787 else
2946 { 3788 {
2947 WL w_; 3789 WL w_;
2948 3790
2949 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3791 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2950 { 3792 {
2951 ev_stat *w = (ev_stat *)w_; 3793 ev_stat *w = (ev_stat *)w_;
2952 w_ = w_->next; /* lets us remove this watcher and all before it */ 3794 w_ = w_->next; /* lets us remove this watcher and all before it */
2953 3795
2954 if (w->wd == wd || wd == -1) 3796 if (w->wd == wd || wd == -1)
2955 { 3797 {
2956 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3798 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2957 { 3799 {
2958 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3800 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2959 w->wd = -1; 3801 w->wd = -1;
2960 infy_add (EV_A_ w); /* re-add, no matter what */ 3802 infy_add (EV_A_ w); /* re-add, no matter what */
2961 } 3803 }
2962 3804
2963 stat_timer_cb (EV_A_ &w->timer, 0); 3805 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2968 3810
2969static void 3811static void
2970infy_cb (EV_P_ ev_io *w, int revents) 3812infy_cb (EV_P_ ev_io *w, int revents)
2971{ 3813{
2972 char buf [EV_INOTIFY_BUFSIZE]; 3814 char buf [EV_INOTIFY_BUFSIZE];
2973 struct inotify_event *ev = (struct inotify_event *)buf;
2974 int ofs; 3815 int ofs;
2975 int len = read (fs_fd, buf, sizeof (buf)); 3816 int len = read (fs_fd, buf, sizeof (buf));
2976 3817
2977 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3818 for (ofs = 0; ofs < len; )
3819 {
3820 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2978 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3821 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3822 ofs += sizeof (struct inotify_event) + ev->len;
3823 }
2979} 3824}
2980 3825
2981inline_size void 3826inline_size void ecb_cold
2982check_2625 (EV_P) 3827ev_check_2625 (EV_P)
2983{ 3828{
2984 /* kernels < 2.6.25 are borked 3829 /* kernels < 2.6.25 are borked
2985 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3830 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2986 */ 3831 */
2987 struct utsname buf; 3832 if (ev_linux_version () < 0x020619)
2988 int major, minor, micro;
2989
2990 if (uname (&buf))
2991 return;
2992
2993 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2994 return;
2995
2996 if (major < 2
2997 || (major == 2 && minor < 6)
2998 || (major == 2 && minor == 6 && micro < 25))
2999 return; 3833 return;
3000 3834
3001 fs_2625 = 1; 3835 fs_2625 = 1;
3002} 3836}
3003 3837
3004inline_size int 3838inline_size int
3005infy_newfd (void) 3839infy_newfd (void)
3006{ 3840{
3007#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3841#if defined IN_CLOEXEC && defined IN_NONBLOCK
3008 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3842 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3009 if (fd >= 0) 3843 if (fd >= 0)
3010 return fd; 3844 return fd;
3011#endif 3845#endif
3012 return inotify_init (); 3846 return inotify_init ();
… …
3018 if (fs_fd != -2) 3852 if (fs_fd != -2)
3019 return; 3853 return;
3020 3854
3021 fs_fd = -1; 3855 fs_fd = -1;
3022 3856
3023 check_2625 (EV_A); 3857 ev_check_2625 (EV_A);
3024 3858
3025 fs_fd = infy_newfd (); 3859 fs_fd = infy_newfd ();
3026 3860
3027 if (fs_fd >= 0) 3861 if (fs_fd >= 0)
3028 { 3862 {
… …
3053 ev_io_set (&fs_w, fs_fd, EV_READ); 3887 ev_io_set (&fs_w, fs_fd, EV_READ);
3054 ev_io_start (EV_A_ &fs_w); 3888 ev_io_start (EV_A_ &fs_w);
3055 ev_unref (EV_A); 3889 ev_unref (EV_A);
3056 } 3890 }
3057 3891
3058 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3892 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3059 { 3893 {
3060 WL w_ = fs_hash [slot].head; 3894 WL w_ = fs_hash [slot].head;
3061 fs_hash [slot].head = 0; 3895 fs_hash [slot].head = 0;
3062 3896
3063 while (w_) 3897 while (w_)
… …
3087#else 3921#else
3088# define EV_LSTAT(p,b) lstat (p, b) 3922# define EV_LSTAT(p,b) lstat (p, b)
3089#endif 3923#endif
3090 3924
3091void 3925void
3092ev_stat_stat (EV_P_ ev_stat *w) 3926ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3093{ 3927{
3094 if (lstat (w->path, &w->attr) < 0) 3928 if (lstat (w->path, &w->attr) < 0)
3095 w->attr.st_nlink = 0; 3929 w->attr.st_nlink = 0;
3096 else if (!w->attr.st_nlink) 3930 else if (!w->attr.st_nlink)
3097 w->attr.st_nlink = 1; 3931 w->attr.st_nlink = 1;
… …
3100static void noinline 3934static void noinline
3101stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3935stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3102{ 3936{
3103 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3937 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3104 3938
3105 /* we copy this here each the time so that */ 3939 ev_statdata prev = w->attr;
3106 /* prev has the old value when the callback gets invoked */
3107 w->prev = w->attr;
3108 ev_stat_stat (EV_A_ w); 3940 ev_stat_stat (EV_A_ w);
3109 3941
3110 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3942 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3111 if ( 3943 if (
3112 w->prev.st_dev != w->attr.st_dev 3944 prev.st_dev != w->attr.st_dev
3113 || w->prev.st_ino != w->attr.st_ino 3945 || prev.st_ino != w->attr.st_ino
3114 || w->prev.st_mode != w->attr.st_mode 3946 || prev.st_mode != w->attr.st_mode
3115 || w->prev.st_nlink != w->attr.st_nlink 3947 || prev.st_nlink != w->attr.st_nlink
3116 || w->prev.st_uid != w->attr.st_uid 3948 || prev.st_uid != w->attr.st_uid
3117 || w->prev.st_gid != w->attr.st_gid 3949 || prev.st_gid != w->attr.st_gid
3118 || w->prev.st_rdev != w->attr.st_rdev 3950 || prev.st_rdev != w->attr.st_rdev
3119 || w->prev.st_size != w->attr.st_size 3951 || prev.st_size != w->attr.st_size
3120 || w->prev.st_atime != w->attr.st_atime 3952 || prev.st_atime != w->attr.st_atime
3121 || w->prev.st_mtime != w->attr.st_mtime 3953 || prev.st_mtime != w->attr.st_mtime
3122 || w->prev.st_ctime != w->attr.st_ctime 3954 || prev.st_ctime != w->attr.st_ctime
3123 ) { 3955 ) {
3956 /* we only update w->prev on actual differences */
3957 /* in case we test more often than invoke the callback, */
3958 /* to ensure that prev is always different to attr */
3959 w->prev = prev;
3960
3124 #if EV_USE_INOTIFY 3961 #if EV_USE_INOTIFY
3125 if (fs_fd >= 0) 3962 if (fs_fd >= 0)
3126 { 3963 {
3127 infy_del (EV_A_ w); 3964 infy_del (EV_A_ w);
3128 infy_add (EV_A_ w); 3965 infy_add (EV_A_ w);
… …
3133 ev_feed_event (EV_A_ w, EV_STAT); 3970 ev_feed_event (EV_A_ w, EV_STAT);
3134 } 3971 }
3135} 3972}
3136 3973
3137void 3974void
3138ev_stat_start (EV_P_ ev_stat *w) 3975ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3139{ 3976{
3140 if (expect_false (ev_is_active (w))) 3977 if (expect_false (ev_is_active (w)))
3141 return; 3978 return;
3142 3979
3143 ev_stat_stat (EV_A_ w); 3980 ev_stat_stat (EV_A_ w);
… …
3164 4001
3165 EV_FREQUENT_CHECK; 4002 EV_FREQUENT_CHECK;
3166} 4003}
3167 4004
3168void 4005void
3169ev_stat_stop (EV_P_ ev_stat *w) 4006ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3170{ 4007{
3171 clear_pending (EV_A_ (W)w); 4008 clear_pending (EV_A_ (W)w);
3172 if (expect_false (!ev_is_active (w))) 4009 if (expect_false (!ev_is_active (w)))
3173 return; 4010 return;
3174 4011
… …
3190} 4027}
3191#endif 4028#endif
3192 4029
3193#if EV_IDLE_ENABLE 4030#if EV_IDLE_ENABLE
3194void 4031void
3195ev_idle_start (EV_P_ ev_idle *w) 4032ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3196{ 4033{
3197 if (expect_false (ev_is_active (w))) 4034 if (expect_false (ev_is_active (w)))
3198 return; 4035 return;
3199 4036
3200 pri_adjust (EV_A_ (W)w); 4037 pri_adjust (EV_A_ (W)w);
… …
3213 4050
3214 EV_FREQUENT_CHECK; 4051 EV_FREQUENT_CHECK;
3215} 4052}
3216 4053
3217void 4054void
3218ev_idle_stop (EV_P_ ev_idle *w) 4055ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3219{ 4056{
3220 clear_pending (EV_A_ (W)w); 4057 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4058 if (expect_false (!ev_is_active (w)))
3222 return; 4059 return;
3223 4060
… …
3235 4072
3236 EV_FREQUENT_CHECK; 4073 EV_FREQUENT_CHECK;
3237} 4074}
3238#endif 4075#endif
3239 4076
4077#if EV_PREPARE_ENABLE
3240void 4078void
3241ev_prepare_start (EV_P_ ev_prepare *w) 4079ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3242{ 4080{
3243 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3244 return; 4082 return;
3245 4083
3246 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
… …
3251 4089
3252 EV_FREQUENT_CHECK; 4090 EV_FREQUENT_CHECK;
3253} 4091}
3254 4092
3255void 4093void
3256ev_prepare_stop (EV_P_ ev_prepare *w) 4094ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3257{ 4095{
3258 clear_pending (EV_A_ (W)w); 4096 clear_pending (EV_A_ (W)w);
3259 if (expect_false (!ev_is_active (w))) 4097 if (expect_false (!ev_is_active (w)))
3260 return; 4098 return;
3261 4099
… …
3270 4108
3271 ev_stop (EV_A_ (W)w); 4109 ev_stop (EV_A_ (W)w);
3272 4110
3273 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
3274} 4112}
4113#endif
3275 4114
4115#if EV_CHECK_ENABLE
3276void 4116void
3277ev_check_start (EV_P_ ev_check *w) 4117ev_check_start (EV_P_ ev_check *w) EV_THROW
3278{ 4118{
3279 if (expect_false (ev_is_active (w))) 4119 if (expect_false (ev_is_active (w)))
3280 return; 4120 return;
3281 4121
3282 EV_FREQUENT_CHECK; 4122 EV_FREQUENT_CHECK;
… …
3287 4127
3288 EV_FREQUENT_CHECK; 4128 EV_FREQUENT_CHECK;
3289} 4129}
3290 4130
3291void 4131void
3292ev_check_stop (EV_P_ ev_check *w) 4132ev_check_stop (EV_P_ ev_check *w) EV_THROW
3293{ 4133{
3294 clear_pending (EV_A_ (W)w); 4134 clear_pending (EV_A_ (W)w);
3295 if (expect_false (!ev_is_active (w))) 4135 if (expect_false (!ev_is_active (w)))
3296 return; 4136 return;
3297 4137
… …
3306 4146
3307 ev_stop (EV_A_ (W)w); 4147 ev_stop (EV_A_ (W)w);
3308 4148
3309 EV_FREQUENT_CHECK; 4149 EV_FREQUENT_CHECK;
3310} 4150}
4151#endif
3311 4152
3312#if EV_EMBED_ENABLE 4153#if EV_EMBED_ENABLE
3313void noinline 4154void noinline
3314ev_embed_sweep (EV_P_ ev_embed *w) 4155ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3315{ 4156{
3316 ev_loop (w->other, EVLOOP_NONBLOCK); 4157 ev_run (w->other, EVRUN_NOWAIT);
3317} 4158}
3318 4159
3319static void 4160static void
3320embed_io_cb (EV_P_ ev_io *io, int revents) 4161embed_io_cb (EV_P_ ev_io *io, int revents)
3321{ 4162{
3322 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4163 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3323 4164
3324 if (ev_cb (w)) 4165 if (ev_cb (w))
3325 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4166 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3326 else 4167 else
3327 ev_loop (w->other, EVLOOP_NONBLOCK); 4168 ev_run (w->other, EVRUN_NOWAIT);
3328} 4169}
3329 4170
3330static void 4171static void
3331embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4172embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3332{ 4173{
… …
3336 EV_P = w->other; 4177 EV_P = w->other;
3337 4178
3338 while (fdchangecnt) 4179 while (fdchangecnt)
3339 { 4180 {
3340 fd_reify (EV_A); 4181 fd_reify (EV_A);
3341 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4182 ev_run (EV_A_ EVRUN_NOWAIT);
3342 } 4183 }
3343 } 4184 }
3344} 4185}
3345 4186
3346static void 4187static void
… …
3352 4193
3353 { 4194 {
3354 EV_P = w->other; 4195 EV_P = w->other;
3355 4196
3356 ev_loop_fork (EV_A); 4197 ev_loop_fork (EV_A);
3357 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4198 ev_run (EV_A_ EVRUN_NOWAIT);
3358 } 4199 }
3359 4200
3360 ev_embed_start (EV_A_ w); 4201 ev_embed_start (EV_A_ w);
3361} 4202}
3362 4203
… …
3367 ev_idle_stop (EV_A_ idle); 4208 ev_idle_stop (EV_A_ idle);
3368} 4209}
3369#endif 4210#endif
3370 4211
3371void 4212void
3372ev_embed_start (EV_P_ ev_embed *w) 4213ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3373{ 4214{
3374 if (expect_false (ev_is_active (w))) 4215 if (expect_false (ev_is_active (w)))
3375 return; 4216 return;
3376 4217
3377 { 4218 {
… …
3398 4239
3399 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3400} 4241}
3401 4242
3402void 4243void
3403ev_embed_stop (EV_P_ ev_embed *w) 4244ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3404{ 4245{
3405 clear_pending (EV_A_ (W)w); 4246 clear_pending (EV_A_ (W)w);
3406 if (expect_false (!ev_is_active (w))) 4247 if (expect_false (!ev_is_active (w)))
3407 return; 4248 return;
3408 4249
… …
3410 4251
3411 ev_io_stop (EV_A_ &w->io); 4252 ev_io_stop (EV_A_ &w->io);
3412 ev_prepare_stop (EV_A_ &w->prepare); 4253 ev_prepare_stop (EV_A_ &w->prepare);
3413 ev_fork_stop (EV_A_ &w->fork); 4254 ev_fork_stop (EV_A_ &w->fork);
3414 4255
4256 ev_stop (EV_A_ (W)w);
4257
3415 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3416} 4259}
3417#endif 4260#endif
3418 4261
3419#if EV_FORK_ENABLE 4262#if EV_FORK_ENABLE
3420void 4263void
3421ev_fork_start (EV_P_ ev_fork *w) 4264ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3422{ 4265{
3423 if (expect_false (ev_is_active (w))) 4266 if (expect_false (ev_is_active (w)))
3424 return; 4267 return;
3425 4268
3426 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
… …
3431 4274
3432 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3433} 4276}
3434 4277
3435void 4278void
3436ev_fork_stop (EV_P_ ev_fork *w) 4279ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3437{ 4280{
3438 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3439 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3440 return; 4283 return;
3441 4284
… …
3452 4295
3453 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3454} 4297}
3455#endif 4298#endif
3456 4299
4300#if EV_CLEANUP_ENABLE
4301void
4302ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4303{
4304 if (expect_false (ev_is_active (w)))
4305 return;
4306
4307 EV_FREQUENT_CHECK;
4308
4309 ev_start (EV_A_ (W)w, ++cleanupcnt);
4310 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4311 cleanups [cleanupcnt - 1] = w;
4312
4313 /* cleanup watchers should never keep a refcount on the loop */
4314 ev_unref (EV_A);
4315 EV_FREQUENT_CHECK;
4316}
4317
4318void
4319ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4320{
4321 clear_pending (EV_A_ (W)w);
4322 if (expect_false (!ev_is_active (w)))
4323 return;
4324
4325 EV_FREQUENT_CHECK;
4326 ev_ref (EV_A);
4327
4328 {
4329 int active = ev_active (w);
4330
4331 cleanups [active - 1] = cleanups [--cleanupcnt];
4332 ev_active (cleanups [active - 1]) = active;
4333 }
4334
4335 ev_stop (EV_A_ (W)w);
4336
4337 EV_FREQUENT_CHECK;
4338}
4339#endif
4340
3457#if EV_ASYNC_ENABLE 4341#if EV_ASYNC_ENABLE
3458void 4342void
3459ev_async_start (EV_P_ ev_async *w) 4343ev_async_start (EV_P_ ev_async *w) EV_THROW
3460{ 4344{
3461 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3462 return; 4346 return;
4347
4348 w->sent = 0;
3463 4349
3464 evpipe_init (EV_A); 4350 evpipe_init (EV_A);
3465 4351
3466 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
3467 4353
… …
3471 4357
3472 EV_FREQUENT_CHECK; 4358 EV_FREQUENT_CHECK;
3473} 4359}
3474 4360
3475void 4361void
3476ev_async_stop (EV_P_ ev_async *w) 4362ev_async_stop (EV_P_ ev_async *w) EV_THROW
3477{ 4363{
3478 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3479 if (expect_false (!ev_is_active (w))) 4365 if (expect_false (!ev_is_active (w)))
3480 return; 4366 return;
3481 4367
… …
3492 4378
3493 EV_FREQUENT_CHECK; 4379 EV_FREQUENT_CHECK;
3494} 4380}
3495 4381
3496void 4382void
3497ev_async_send (EV_P_ ev_async *w) 4383ev_async_send (EV_P_ ev_async *w) EV_THROW
3498{ 4384{
3499 w->sent = 1; 4385 w->sent = 1;
3500 evpipe_write (EV_A_ &async_pending); 4386 evpipe_write (EV_A_ &async_pending);
3501} 4387}
3502#endif 4388#endif
… …
3539 4425
3540 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4426 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3541} 4427}
3542 4428
3543void 4429void
3544ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4430ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3545{ 4431{
3546 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4432 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3547 4433
3548 if (expect_false (!once)) 4434 if (expect_false (!once))
3549 { 4435 {
3550 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4436 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3551 return; 4437 return;
3552 } 4438 }
3553 4439
3554 once->cb = cb; 4440 once->cb = cb;
3555 once->arg = arg; 4441 once->arg = arg;
… …
3570} 4456}
3571 4457
3572/*****************************************************************************/ 4458/*****************************************************************************/
3573 4459
3574#if EV_WALK_ENABLE 4460#if EV_WALK_ENABLE
3575void 4461void ecb_cold
3576ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4462ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3577{ 4463{
3578 int i, j; 4464 int i, j;
3579 ev_watcher_list *wl, *wn; 4465 ev_watcher_list *wl, *wn;
3580 4466
3581 if (types & (EV_IO | EV_EMBED)) 4467 if (types & (EV_IO | EV_EMBED))
… …
3624 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4510 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3625#endif 4511#endif
3626 4512
3627#if EV_IDLE_ENABLE 4513#if EV_IDLE_ENABLE
3628 if (types & EV_IDLE) 4514 if (types & EV_IDLE)
3629 for (j = NUMPRI; i--; ) 4515 for (j = NUMPRI; j--; )
3630 for (i = idlecnt [j]; i--; ) 4516 for (i = idlecnt [j]; i--; )
3631 cb (EV_A_ EV_IDLE, idles [j][i]); 4517 cb (EV_A_ EV_IDLE, idles [j][i]);
3632#endif 4518#endif
3633 4519
3634#if EV_FORK_ENABLE 4520#if EV_FORK_ENABLE
… …
3642 if (types & EV_ASYNC) 4528 if (types & EV_ASYNC)
3643 for (i = asynccnt; i--; ) 4529 for (i = asynccnt; i--; )
3644 cb (EV_A_ EV_ASYNC, asyncs [i]); 4530 cb (EV_A_ EV_ASYNC, asyncs [i]);
3645#endif 4531#endif
3646 4532
4533#if EV_PREPARE_ENABLE
3647 if (types & EV_PREPARE) 4534 if (types & EV_PREPARE)
3648 for (i = preparecnt; i--; ) 4535 for (i = preparecnt; i--; )
3649#if EV_EMBED_ENABLE 4536# if EV_EMBED_ENABLE
3650 if (ev_cb (prepares [i]) != embed_prepare_cb) 4537 if (ev_cb (prepares [i]) != embed_prepare_cb)
3651#endif 4538# endif
3652 cb (EV_A_ EV_PREPARE, prepares [i]); 4539 cb (EV_A_ EV_PREPARE, prepares [i]);
4540#endif
3653 4541
4542#if EV_CHECK_ENABLE
3654 if (types & EV_CHECK) 4543 if (types & EV_CHECK)
3655 for (i = checkcnt; i--; ) 4544 for (i = checkcnt; i--; )
3656 cb (EV_A_ EV_CHECK, checks [i]); 4545 cb (EV_A_ EV_CHECK, checks [i]);
4546#endif
3657 4547
4548#if EV_SIGNAL_ENABLE
3658 if (types & EV_SIGNAL) 4549 if (types & EV_SIGNAL)
3659 for (i = 0; i < EV_NSIG - 1; ++i) 4550 for (i = 0; i < EV_NSIG - 1; ++i)
3660 for (wl = signals [i].head; wl; ) 4551 for (wl = signals [i].head; wl; )
3661 { 4552 {
3662 wn = wl->next; 4553 wn = wl->next;
3663 cb (EV_A_ EV_SIGNAL, wl); 4554 cb (EV_A_ EV_SIGNAL, wl);
3664 wl = wn; 4555 wl = wn;
3665 } 4556 }
4557#endif
3666 4558
4559#if EV_CHILD_ENABLE
3667 if (types & EV_CHILD) 4560 if (types & EV_CHILD)
3668 for (i = EV_PID_HASHSIZE; i--; ) 4561 for (i = (EV_PID_HASHSIZE); i--; )
3669 for (wl = childs [i]; wl; ) 4562 for (wl = childs [i]; wl; )
3670 { 4563 {
3671 wn = wl->next; 4564 wn = wl->next;
3672 cb (EV_A_ EV_CHILD, wl); 4565 cb (EV_A_ EV_CHILD, wl);
3673 wl = wn; 4566 wl = wn;
3674 } 4567 }
4568#endif
3675/* EV_STAT 0x00001000 /* stat data changed */ 4569/* EV_STAT 0x00001000 /* stat data changed */
3676/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4570/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3677} 4571}
3678#endif 4572#endif
3679 4573
3680#if EV_MULTIPLICITY 4574#if EV_MULTIPLICITY
3681 #include "ev_wrap.h" 4575 #include "ev_wrap.h"
3682#endif 4576#endif
3683 4577
3684#ifdef __cplusplus
3685}
3686#endif
3687

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines