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Comparing libev/ev.c (file contents):
Revision 1.323 by root, Wed Jan 13 12:44:33 2010 UTC vs.
Revision 1.449 by root, Sun Sep 23 21:21:58 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
175#endif 197#endif
176 198
177#ifndef _WIN32 199#ifndef _WIN32
178# include <sys/time.h> 200# include <sys/time.h>
179# include <sys/wait.h> 201# include <sys/wait.h>
180# include <unistd.h> 202# include <unistd.h>
181#else 203#else
182# include <io.h> 204# include <io.h>
183# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
184# include <windows.h> 207# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
187# endif 210# endif
211# undef EV_AVOID_STDIO
188#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
189 221
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
191 223
192/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
216# define EV_NSIG 65 249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
217#endif 254#endif
218 255
219#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 259# else
223# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
224# endif 261# endif
225#endif 262#endif
226 263
227#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 267# else
231# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
232# endif 269# endif
233#endif 270#endif
234 271
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 274#endif
238 275
239#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 279# else
243# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
244# endif 281# endif
245#endif 282#endif
246 283
247#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 286#endif
250 287
251#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
252# ifdef _WIN32 289# ifdef _WIN32
253# define EV_USE_POLL 0 290# define EV_USE_POLL 0
254# else 291# else
255# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 293# endif
257#endif 294#endif
258 295
259#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 299# else
263# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
264# endif 301# endif
265#endif 302#endif
266 303
… …
272# define EV_USE_PORT 0 309# define EV_USE_PORT 0
273#endif 310#endif
274 311
275#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 315# else
279# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
280# endif 317# endif
281#endif 318#endif
282 319
283#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 322#endif
290 323
291#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 326#endif
298 327
299#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 331# else
303# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
304# endif 333# endif
305#endif 334#endif
306 335
307#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 339# else
311# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
312# endif 341# endif
313#endif 342#endif
314 343
… …
317# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
319#endif 348#endif
320 349
321#ifndef EV_VERIFY 350#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 352#endif
324 353
325#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 356#endif
328 357
329#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 360#endif
332 361
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 365# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
341# else 370# else
… …
344# endif 373# endif
345#endif 374#endif
346 375
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
349#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
352#endif 387#endif
353 388
… …
360# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
362#endif 397#endif
363 398
364#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 402# include <sys/select.h>
367# endif 403# endif
368#endif 404#endif
369 405
370#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 407# include <sys/statfs.h>
373# include <sys/inotify.h> 408# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
378# endif 413# endif
379#endif
380
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif 414#endif
384 415
385#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
387# include <stdint.h> 418# include <stdint.h>
… …
393# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
394# else 425# else
395# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
396# endif 427# endif
397# endif 428# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 430#endif
406 431
407#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
409# include <stdint.h> 434# include <stdint.h>
… …
415# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
416# else 441# else
417# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
418# endif 443# endif
419# endif 444# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
424 446
425struct signalfd_siginfo 447struct signalfd_siginfo
426{ 448{
427 uint32_t ssi_signo; 449 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
429}; 451};
430# ifdef __cplusplus
431}
432# endif 452#endif
433#endif
434
435 453
436/**/ 454/**/
437 455
438#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 458#else
441# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
442#endif 460#endif
443 461
444/* 462/*
445 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 465 */
452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
453 468
454#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
455#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
456 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
457#if __GNUC__ >= 4 519 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
459# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
460#else 536#else
461# define expect(expr,value) (expr) 537 #include <inttypes.h>
462# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
464# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
465# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
466#endif 557 #endif
558#endif
467 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_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. */
468#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
469#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
470#define inline_size static inline 1013#define inline_size ecb_inline
471 1014
472#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
473# define inline_speed static noinline 1018# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 1019#endif
477 1020
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 1022
480#if EV_MINPRI == EV_MAXPRI 1023#if EV_MINPRI == EV_MAXPRI
… …
493#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
495 1038
496#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
497/* 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 */
498/* giving it a reasonably high chance of working on typical architetcures */ 1041/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 1043#endif
501 1044
502#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
517# include "ev_win32.c" 1060# include "ev_win32.c"
518#endif 1061#endif
519 1062
520/*****************************************************************************/ 1063/*****************************************************************************/
521 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
522static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
523 1164
524void 1165void ecb_cold
525ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
526{ 1167{
527 syserr_cb = cb; 1168 syserr_cb = cb;
528} 1169}
529 1170
530static void noinline 1171static void noinline ecb_cold
531ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
532{ 1173{
533 if (!msg) 1174 if (!msg)
534 msg = "(libev) system error"; 1175 msg = "(libev) system error";
535 1176
536 if (syserr_cb) 1177 if (syserr_cb)
537 syserr_cb (msg); 1178 syserr_cb (msg);
538 else 1179 else
539 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
540 perror (msg); 1187 perror (msg);
1188#endif
541 abort (); 1189 abort ();
542 } 1190 }
543} 1191}
544 1192
545static void * 1193static void *
546ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
547{ 1195{
548 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it,
1200 * despite documenting it otherwise.
551 */ 1201 */
552 1202
553 if (size) 1203 if (size)
554 return realloc (ptr, size); 1204 return realloc (ptr, size);
555 1205
556 free (ptr); 1206 free (ptr);
557 return 0; 1207 return 0;
558} 1208}
559 1209
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
561 1211
562void 1212void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
564{ 1214{
565 alloc = cb; 1215 alloc = cb;
566} 1216}
567 1217
568inline_speed void * 1218inline_speed void *
… …
570{ 1220{
571 ptr = alloc (ptr, size); 1221 ptr = alloc (ptr, size);
572 1222
573 if (!ptr && size) 1223 if (!ptr && size)
574 { 1224 {
1225#if EV_AVOID_STDIO
1226 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1227#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1228 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1229#endif
576 abort (); 1230 abort ();
577 } 1231 }
578 1232
579 return ptr; 1233 return ptr;
580} 1234}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1250 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 1251 unsigned char unused;
598#if EV_USE_EPOLL 1252#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1253 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1254#endif
601#if EV_SELECT_IS_WINSOCKET 1255#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1256 SOCKET handle;
1257#endif
1258#if EV_USE_IOCP
1259 OVERLAPPED or, ow;
603#endif 1260#endif
604} ANFD; 1261} ANFD;
605 1262
606/* stores the pending event set for a given watcher */ 1263/* stores the pending event set for a given watcher */
607typedef struct 1264typedef struct
… …
649 #undef VAR 1306 #undef VAR
650 }; 1307 };
651 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
652 1309
653 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 1311 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 1312
656#else 1313#else
657 1314
658 ev_tstamp ev_rt_now; 1315 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 1316 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 1317 #include "ev_vars.h"
661 #undef VAR 1318 #undef VAR
662 1319
663 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
664 1321
665#endif 1322#endif
666 1323
667#if EV_MINIMAL < 2 1324#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1325# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1326# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 1327# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 1328#else
672# define EV_RELEASE_CB (void)0 1329# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 1330# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1331# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 1332#endif
676 1333
677#define EVUNLOOP_RECURSE 0x80 1334#define EVBREAK_RECURSE 0x80
678 1335
679/*****************************************************************************/ 1336/*****************************************************************************/
680 1337
681#ifndef EV_HAVE_EV_TIME 1338#ifndef EV_HAVE_EV_TIME
682ev_tstamp 1339ev_tstamp
683ev_time (void) 1340ev_time (void) EV_THROW
684{ 1341{
685#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 1343 if (expect_true (have_realtime))
687 { 1344 {
688 struct timespec ts; 1345 struct timespec ts;
… …
712 return ev_time (); 1369 return ev_time ();
713} 1370}
714 1371
715#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
716ev_tstamp 1373ev_tstamp
717ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
718{ 1375{
719 return ev_rt_now; 1376 return ev_rt_now;
720} 1377}
721#endif 1378#endif
722 1379
723void 1380void
724ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
725{ 1382{
726 if (delay > 0.) 1383 if (delay > 0.)
727 { 1384 {
728#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
729 struct timespec ts; 1386 struct timespec ts;
730 1387
731 ts.tv_sec = (time_t)delay; 1388 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
735#elif defined(_WIN32) 1390#elif defined _WIN32
736 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
737#else 1392#else
738 struct timeval tv; 1393 struct timeval tv;
739 1394
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 1396 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 1397 /* by older ones */
1398 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
747#endif 1400#endif
748 } 1401 }
749} 1402}
750 1403
751/*****************************************************************************/ 1404/*****************************************************************************/
752 1405
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1406#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 1407
755/* find a suitable new size for the given array, */ 1408/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 1409/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 1410inline_size int
758array_nextsize (int elem, int cur, int cnt) 1411array_nextsize (int elem, int cur, int cnt)
759{ 1412{
760 int ncur = cur + 1; 1413 int ncur = cur + 1;
761 1414
762 do 1415 do
763 ncur <<= 1; 1416 ncur <<= 1;
764 while (cnt > ncur); 1417 while (cnt > ncur);
765 1418
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1419 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 1421 {
769 ncur *= elem; 1422 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1423 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
773 } 1426 }
774 1427
775 return ncur; 1428 return ncur;
776} 1429}
777 1430
778static noinline void * 1431static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
780{ 1433{
781 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
783} 1436}
… …
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
787 1440
788#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
790 { \ 1443 { \
791 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
795 } 1448 }
796 1449
… …
814pendingcb (EV_P_ ev_prepare *w, int revents) 1467pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 1468{
816} 1469}
817 1470
818void noinline 1471void noinline
819ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
820{ 1473{
821 W w_ = (W)w; 1474 W w_ = (W)w;
822 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
823 1476
824 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
828 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
830 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
832 } 1485 }
1486
1487 pendingpri = NUMPRI - 1;
833} 1488}
834 1489
835inline_speed void 1490inline_speed void
836feed_reverse (EV_P_ W w) 1491feed_reverse (EV_P_ W w)
837{ 1492{
… …
857} 1512}
858 1513
859/*****************************************************************************/ 1514/*****************************************************************************/
860 1515
861inline_speed void 1516inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1517fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1518{
864 ANFD *anfd = anfds + fd; 1519 ANFD *anfd = anfds + fd;
865 ev_io *w; 1520 ev_io *w;
866 1521
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1534fd_event (EV_P_ int fd, int revents)
880{ 1535{
881 ANFD *anfd = anfds + fd; 1536 ANFD *anfd = anfds + fd;
882 1537
883 if (expect_true (!anfd->reify)) 1538 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1539 fd_event_nocheck (EV_A_ fd, revents);
885} 1540}
886 1541
887void 1542void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
889{ 1544{
890 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
892} 1547}
893 1548
894/* make sure the external fd watch events are in-sync */ 1549/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1550/* with the kernel/libev internal state */
896inline_size void 1551inline_size void
897fd_reify (EV_P) 1552fd_reify (EV_P)
898{ 1553{
899 int i; 1554 int i;
900 1555
1556#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1557 for (i = 0; i < fdchangecnt; ++i)
1558 {
1559 int fd = fdchanges [i];
1560 ANFD *anfd = anfds + fd;
1561
1562 if (anfd->reify & EV__IOFDSET && anfd->head)
1563 {
1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1565
1566 if (handle != anfd->handle)
1567 {
1568 unsigned long arg;
1569
1570 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1571
1572 /* handle changed, but fd didn't - we need to do it in two steps */
1573 backend_modify (EV_A_ fd, anfd->events, 0);
1574 anfd->events = 0;
1575 anfd->handle = handle;
1576 }
1577 }
1578 }
1579#endif
1580
901 for (i = 0; i < fdchangecnt; ++i) 1581 for (i = 0; i < fdchangecnt; ++i)
902 { 1582 {
903 int fd = fdchanges [i]; 1583 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1584 ANFD *anfd = anfds + fd;
905 ev_io *w; 1585 ev_io *w;
906 1586
907 unsigned char events = 0; 1587 unsigned char o_events = anfd->events;
1588 unsigned char o_reify = anfd->reify;
908 1589
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1590 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1591
912#if EV_SELECT_IS_WINSOCKET 1592 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1593 {
915 unsigned long arg; 1594 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1595
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1596 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1597 anfd->events |= (unsigned char)w->events;
1598
1599 if (o_events != anfd->events)
1600 o_reify = EV__IOFDSET; /* actually |= */
918 } 1601 }
919#endif
920 1602
921 { 1603 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 1604 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1605 }
932 1606
933 fdchangecnt = 0; 1607 fdchangecnt = 0;
934} 1608}
935 1609
… …
947 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
948 } 1622 }
949} 1623}
950 1624
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1626inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
954{ 1628{
955 ev_io *w; 1629 ev_io *w;
956 1630
957 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1633 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1635 }
962} 1636}
963 1637
964/* check whether the given fd is atcually valid, for error recovery */ 1638/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1639inline_size int ecb_cold
966fd_valid (int fd) 1640fd_valid (int fd)
967{ 1641{
968#ifdef _WIN32 1642#ifdef _WIN32
969 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1644#else
971 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
972#endif 1646#endif
973} 1647}
974 1648
975/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
976static void noinline 1650static void noinline ecb_cold
977fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
978{ 1652{
979 int fd; 1653 int fd;
980 1654
981 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
985} 1659}
986 1660
987/* called on ENOMEM in select/poll to kill some fds and retry */ 1661/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 1662static void noinline ecb_cold
989fd_enomem (EV_P) 1663fd_enomem (EV_P)
990{ 1664{
991 int fd; 1665 int fd;
992 1666
993 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 1685 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1686 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 1687 }
1014} 1688}
1015 1689
1690/* used to prepare libev internal fd's */
1691/* this is not fork-safe */
1692inline_speed void
1693fd_intern (int fd)
1694{
1695#ifdef _WIN32
1696 unsigned long arg = 1;
1697 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1698#else
1699 fcntl (fd, F_SETFD, FD_CLOEXEC);
1700 fcntl (fd, F_SETFL, O_NONBLOCK);
1701#endif
1702}
1703
1016/*****************************************************************************/ 1704/*****************************************************************************/
1017 1705
1018/* 1706/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 1707 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1708 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 1709 * the branching factor of the d-tree.
1022 */ 1710 */
1023 1711
1024/* 1712/*
… …
1172 1860
1173static ANSIG signals [EV_NSIG - 1]; 1861static ANSIG signals [EV_NSIG - 1];
1174 1862
1175/*****************************************************************************/ 1863/*****************************************************************************/
1176 1864
1177/* used to prepare libev internal fd's */ 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */ 1866
1867static void noinline ecb_cold
1868evpipe_init (EV_P)
1869{
1870 if (!ev_is_active (&pipe_w))
1871 {
1872 int fds [2];
1873
1874# if EV_USE_EVENTFD
1875 fds [0] = -1;
1876 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1877 if (fds [1] < 0 && errno == EINVAL)
1878 fds [1] = eventfd (0, 0);
1879
1880 if (fds [1] < 0)
1881# endif
1882 {
1883 while (pipe (fds))
1884 ev_syserr ("(libev) error creating signal/async pipe");
1885
1886 fd_intern (fds [0]);
1887 }
1888
1889 fd_intern (fds [1]);
1890
1891 evpipe [0] = fds [0];
1892
1893 if (evpipe [1] < 0)
1894 evpipe [1] = fds [1]; /* first call, set write fd */
1895 else
1896 {
1897 /* on subsequent calls, do not change evpipe [1] */
1898 /* so that evpipe_write can always rely on its value. */
1899 /* this branch does not do anything sensible on windows, */
1900 /* so must not be executed on windows */
1901
1902 dup2 (fds [1], evpipe [1]);
1903 close (fds [1]);
1904 }
1905
1906 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1907 ev_io_start (EV_A_ &pipe_w);
1908 ev_unref (EV_A); /* watcher should not keep loop alive */
1909 }
1910}
1911
1179inline_speed void 1912inline_speed void
1180fd_intern (int fd) 1913evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1181{ 1914{
1182#ifdef _WIN32 1915 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1183 unsigned long arg = 1;
1184 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 1916
1191static void noinline 1917 if (expect_true (*flag))
1192evpipe_init (EV_P) 1918 return;
1193{ 1919
1194 if (!ev_is_active (&pipe_w)) 1920 *flag = 1;
1921 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1922
1923 pipe_write_skipped = 1;
1924
1925 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1926
1927 if (pipe_write_wanted)
1195 { 1928 {
1929 int old_errno;
1930
1931 pipe_write_skipped = 0;
1932 ECB_MEMORY_FENCE_RELEASE;
1933
1934 old_errno = errno; /* save errno because write will clobber it */
1935
1196#if EV_USE_EVENTFD 1936#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1937 if (evpipe [0] < 0)
1198 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
1202 { 1938 {
1203 evpipe [0] = -1; 1939 uint64_t counter = 1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 1940 write (evpipe [1], &counter, sizeof (uint64_t));
1205 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 1941 }
1207 else 1942 else
1208#endif 1943#endif
1209 { 1944 {
1210 while (pipe (evpipe)) 1945#ifdef _WIN32
1211 ev_syserr ("(libev) error creating signal/async pipe"); 1946 WSABUF buf;
1212 1947 DWORD sent;
1213 fd_intern (evpipe [0]); 1948 buf.buf = &buf;
1214 fd_intern (evpipe [1]); 1949 buf.len = 1;
1215 ev_io_set (&pipe_w, evpipe [0], EV_READ); 1950 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1951#else
1952 write (evpipe [1], &(evpipe [1]), 1);
1953#endif
1216 } 1954 }
1217
1218 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 }
1221}
1222
1223inline_size void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{
1226 if (!*flag)
1227 {
1228 int old_errno = errno; /* save errno because write might clobber it */
1229
1230 *flag = 1;
1231
1232#if EV_USE_EVENTFD
1233 if (evfd >= 0)
1234 {
1235 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t));
1237 }
1238 else
1239#endif
1240 write (evpipe [1], &old_errno, 1);
1241 1955
1242 errno = old_errno; 1956 errno = old_errno;
1243 } 1957 }
1244} 1958}
1245 1959
… …
1248static void 1962static void
1249pipecb (EV_P_ ev_io *iow, int revents) 1963pipecb (EV_P_ ev_io *iow, int revents)
1250{ 1964{
1251 int i; 1965 int i;
1252 1966
1967 if (revents & EV_READ)
1968 {
1253#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1254 if (evfd >= 0) 1970 if (evpipe [0] < 0)
1255 { 1971 {
1256 uint64_t counter; 1972 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 1973 read (evpipe [1], &counter, sizeof (uint64_t));
1258 } 1974 }
1259 else 1975 else
1260#endif 1976#endif
1261 { 1977 {
1262 char dummy; 1978 char dummy[4];
1979#ifdef _WIN32
1980 WSABUF buf;
1981 DWORD recvd;
1982 DWORD flags = 0;
1983 buf.buf = dummy;
1984 buf.len = sizeof (dummy);
1985 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1986#else
1263 read (evpipe [0], &dummy, 1); 1987 read (evpipe [0], &dummy, sizeof (dummy));
1988#endif
1989 }
1264 } 1990 }
1265 1991
1992 pipe_write_skipped = 0;
1993
1994 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1995
1996#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 1997 if (sig_pending)
1267 { 1998 {
1268 sig_pending = 0; 1999 sig_pending = 0;
2000
2001 ECB_MEMORY_FENCE;
1269 2002
1270 for (i = EV_NSIG - 1; i--; ) 2003 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 2004 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 2005 ev_feed_signal_event (EV_A_ i + 1);
1273 } 2006 }
2007#endif
1274 2008
1275#if EV_ASYNC_ENABLE 2009#if EV_ASYNC_ENABLE
1276 if (async_pending) 2010 if (async_pending)
1277 { 2011 {
1278 async_pending = 0; 2012 async_pending = 0;
2013
2014 ECB_MEMORY_FENCE;
1279 2015
1280 for (i = asynccnt; i--; ) 2016 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2017 if (asyncs [i]->sent)
1282 { 2018 {
1283 asyncs [i]->sent = 0; 2019 asyncs [i]->sent = 0;
2020 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2021 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2022 }
1286 } 2023 }
1287#endif 2024#endif
1288} 2025}
1289 2026
1290/*****************************************************************************/ 2027/*****************************************************************************/
1291 2028
2029void
2030ev_feed_signal (int signum) EV_THROW
2031{
2032#if EV_MULTIPLICITY
2033 ECB_MEMORY_FENCE_ACQUIRE;
2034 EV_P = signals [signum - 1].loop;
2035
2036 if (!EV_A)
2037 return;
2038#endif
2039
2040 signals [signum - 1].pending = 1;
2041 evpipe_write (EV_A_ &sig_pending);
2042}
2043
1292static void 2044static void
1293ev_sighandler (int signum) 2045ev_sighandler (int signum)
1294{ 2046{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#ifdef _WIN32 2047#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2048 signal (signum, ev_sighandler);
1301#endif 2049#endif
1302 2050
1303 signals [signum - 1].pending = 1; 2051 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2052}
1306 2053
1307void noinline 2054void noinline
1308ev_feed_signal_event (EV_P_ int signum) 2055ev_feed_signal_event (EV_P_ int signum) EV_THROW
1309{ 2056{
1310 WL w; 2057 WL w;
1311 2058
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2059 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1313 return; 2060 return;
1314 2061
1315 --signum; 2062 --signum;
1316 2063
1317#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
… …
1321 if (expect_false (signals [signum].loop != EV_A)) 2068 if (expect_false (signals [signum].loop != EV_A))
1322 return; 2069 return;
1323#endif 2070#endif
1324 2071
1325 signals [signum].pending = 0; 2072 signals [signum].pending = 0;
2073 ECB_MEMORY_FENCE_RELEASE;
1326 2074
1327 for (w = signals [signum].head; w; w = w->next) 2075 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2076 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2077}
1330 2078
… …
1346 break; 2094 break;
1347 } 2095 }
1348} 2096}
1349#endif 2097#endif
1350 2098
2099#endif
2100
1351/*****************************************************************************/ 2101/*****************************************************************************/
1352 2102
2103#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2104static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2105
1357static ev_signal childev; 2106static ev_signal childev;
1358 2107
1359#ifndef WIFCONTINUED 2108#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2109# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2114child_reap (EV_P_ int chain, int pid, int status)
1366{ 2115{
1367 ev_child *w; 2116 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2117 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2118
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2119 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2120 {
1372 if ((w->pid == pid || !w->pid) 2121 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2122 && (!traced || (w->flags & 1)))
1374 { 2123 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2124 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 2149 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 2150 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2151 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2152
1404 child_reap (EV_A_ pid, pid, status); 2153 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2154 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2155 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2156}
1408 2157
1409#endif 2158#endif
1410 2159
1411/*****************************************************************************/ 2160/*****************************************************************************/
1412 2161
2162#if EV_USE_IOCP
2163# include "ev_iocp.c"
2164#endif
1413#if EV_USE_PORT 2165#if EV_USE_PORT
1414# include "ev_port.c" 2166# include "ev_port.c"
1415#endif 2167#endif
1416#if EV_USE_KQUEUE 2168#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2169# include "ev_kqueue.c"
… …
1424#endif 2176#endif
1425#if EV_USE_SELECT 2177#if EV_USE_SELECT
1426# include "ev_select.c" 2178# include "ev_select.c"
1427#endif 2179#endif
1428 2180
1429int 2181int ecb_cold
1430ev_version_major (void) 2182ev_version_major (void) EV_THROW
1431{ 2183{
1432 return EV_VERSION_MAJOR; 2184 return EV_VERSION_MAJOR;
1433} 2185}
1434 2186
1435int 2187int ecb_cold
1436ev_version_minor (void) 2188ev_version_minor (void) EV_THROW
1437{ 2189{
1438 return EV_VERSION_MINOR; 2190 return EV_VERSION_MINOR;
1439} 2191}
1440 2192
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2193/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2194int inline_size ecb_cold
1443enable_secure (void) 2195enable_secure (void)
1444{ 2196{
1445#ifdef _WIN32 2197#ifdef _WIN32
1446 return 0; 2198 return 0;
1447#else 2199#else
1448 return getuid () != geteuid () 2200 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2201 || getgid () != getegid ();
1450#endif 2202#endif
1451} 2203}
1452 2204
1453unsigned int 2205unsigned int ecb_cold
1454ev_supported_backends (void) 2206ev_supported_backends (void) EV_THROW
1455{ 2207{
1456 unsigned int flags = 0; 2208 unsigned int flags = 0;
1457 2209
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2210 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2211 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2214 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 2215
1464 return flags; 2216 return flags;
1465} 2217}
1466 2218
1467unsigned int 2219unsigned int ecb_cold
1468ev_recommended_backends (void) 2220ev_recommended_backends (void) EV_THROW
1469{ 2221{
1470 unsigned int flags = ev_supported_backends (); 2222 unsigned int flags = ev_supported_backends ();
1471 2223
1472#ifndef __NetBSD__ 2224#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 2225 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 2229#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 2230 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2231 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2232 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 2233#endif
2234#ifdef __FreeBSD__
2235 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2236#endif
1482 2237
1483 return flags; 2238 return flags;
1484} 2239}
1485 2240
2241unsigned int ecb_cold
2242ev_embeddable_backends (void) EV_THROW
2243{
2244 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2245
2246 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2247 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2248 flags &= ~EVBACKEND_EPOLL;
2249
2250 return flags;
2251}
2252
1486unsigned int 2253unsigned int
1487ev_embeddable_backends (void) 2254ev_backend (EV_P) EV_THROW
1488{ 2255{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2256 return backend;
1490
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */
1493 flags &= ~EVBACKEND_EPOLL;
1494
1495 return flags;
1496} 2257}
1497 2258
2259#if EV_FEATURE_API
1498unsigned int 2260unsigned int
1499ev_backend (EV_P) 2261ev_iteration (EV_P) EV_THROW
1500{ 2262{
1501 return backend; 2263 return loop_count;
1502} 2264}
1503 2265
1504#if EV_MINIMAL < 2
1505unsigned int 2266unsigned int
1506ev_loop_count (EV_P) 2267ev_depth (EV_P) EV_THROW
1507{
1508 return loop_count;
1509}
1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{ 2268{
1514 return loop_depth; 2269 return loop_depth;
1515} 2270}
1516 2271
1517void 2272void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1519{ 2274{
1520 io_blocktime = interval; 2275 io_blocktime = interval;
1521} 2276}
1522 2277
1523void 2278void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2280{
1526 timeout_blocktime = interval; 2281 timeout_blocktime = interval;
1527} 2282}
1528 2283
1529void 2284void
1530ev_set_userdata (EV_P_ void *data) 2285ev_set_userdata (EV_P_ void *data) EV_THROW
1531{ 2286{
1532 userdata = data; 2287 userdata = data;
1533} 2288}
1534 2289
1535void * 2290void *
1536ev_userdata (EV_P) 2291ev_userdata (EV_P) EV_THROW
1537{ 2292{
1538 return userdata; 2293 return userdata;
1539} 2294}
1540 2295
2296void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2297ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1542{ 2298{
1543 invoke_cb = invoke_pending_cb; 2299 invoke_cb = invoke_pending_cb;
1544} 2300}
1545 2301
2302void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2303ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1547{ 2304{
1548 release_cb = release; 2305 release_cb = release;
1549 acquire_cb = acquire; 2306 acquire_cb = acquire;
1550} 2307}
1551#endif 2308#endif
1552 2309
1553/* initialise a loop structure, must be zero-initialised */ 2310/* initialise a loop structure, must be zero-initialised */
1554static void noinline 2311static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 2312loop_init (EV_P_ unsigned int flags) EV_THROW
1556{ 2313{
1557 if (!backend) 2314 if (!backend)
1558 { 2315 {
2316 origflags = flags;
2317
1559#if EV_USE_REALTIME 2318#if EV_USE_REALTIME
1560 if (!have_realtime) 2319 if (!have_realtime)
1561 { 2320 {
1562 struct timespec ts; 2321 struct timespec ts;
1563 2322
… …
1585 if (!(flags & EVFLAG_NOENV) 2344 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 2345 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 2346 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 2347 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 2348
1590 ev_rt_now = ev_time (); 2349 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 2350 mn_now = get_clock ();
1592 now_floor = mn_now; 2351 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 2352 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 2353#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 2354 invoke_cb = ev_invoke_pending;
1596#endif 2355#endif
1597 2356
1598 io_blocktime = 0.; 2357 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 2358 timeout_blocktime = 0.;
1600 backend = 0; 2359 backend = 0;
1601 backend_fd = -1; 2360 backend_fd = -1;
1602 sig_pending = 0; 2361 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 2362#if EV_ASYNC_ENABLE
1604 async_pending = 0; 2363 async_pending = 0;
1605#endif 2364#endif
2365 pipe_write_skipped = 0;
2366 pipe_write_wanted = 0;
2367 evpipe [0] = -1;
2368 evpipe [1] = -1;
1606#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2370 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 2371#endif
1609#if EV_USE_SIGNALFD 2372#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2373 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 2374#endif
1612 2375
1613 if (!(flags & 0x0000ffffU)) 2376 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 2377 flags |= ev_recommended_backends ();
1615 2378
2379#if EV_USE_IOCP
2380 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2381#endif
1616#if EV_USE_PORT 2382#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2383 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 2384#endif
1619#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2386 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2395 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 2396#endif
1631 2397
1632 ev_prepare_init (&pending_w, pendingcb); 2398 ev_prepare_init (&pending_w, pendingcb);
1633 2399
2400#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 2401 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 2402 ev_set_priority (&pipe_w, EV_MAXPRI);
2403#endif
1636 } 2404 }
1637} 2405}
1638 2406
1639/* free up a loop structure */ 2407/* free up a loop structure */
1640static void noinline 2408void ecb_cold
1641loop_destroy (EV_P) 2409ev_loop_destroy (EV_P)
1642{ 2410{
1643 int i; 2411 int i;
2412
2413#if EV_MULTIPLICITY
2414 /* mimic free (0) */
2415 if (!EV_A)
2416 return;
2417#endif
2418
2419#if EV_CLEANUP_ENABLE
2420 /* queue cleanup watchers (and execute them) */
2421 if (expect_false (cleanupcnt))
2422 {
2423 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2424 EV_INVOKE_PENDING;
2425 }
2426#endif
2427
2428#if EV_CHILD_ENABLE
2429 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2430 {
2431 ev_ref (EV_A); /* child watcher */
2432 ev_signal_stop (EV_A_ &childev);
2433 }
2434#endif
1644 2435
1645 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1646 { 2437 {
1647 /*ev_ref (EV_A);*/ 2438 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 2439 /*ev_io_stop (EV_A_ &pipe_w);*/
1649 2440
1650#if EV_USE_EVENTFD
1651 if (evfd >= 0)
1652 close (evfd);
1653#endif
1654
1655 if (evpipe [0] >= 0)
1656 {
1657 EV_WIN32_CLOSE_FD (evpipe [0]); 2441 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1658 EV_WIN32_CLOSE_FD (evpipe [1]); 2442 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1659 }
1660 } 2443 }
1661 2444
1662#if EV_USE_SIGNALFD 2445#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 2446 if (ev_is_active (&sigfd_w))
1664 close (sigfd); 2447 close (sigfd);
… …
1670#endif 2453#endif
1671 2454
1672 if (backend_fd >= 0) 2455 if (backend_fd >= 0)
1673 close (backend_fd); 2456 close (backend_fd);
1674 2457
2458#if EV_USE_IOCP
2459 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2460#endif
1675#if EV_USE_PORT 2461#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2462 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 2463#endif
1678#if EV_USE_KQUEUE 2464#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2465 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1706 array_free (periodic, EMPTY); 2492 array_free (periodic, EMPTY);
1707#endif 2493#endif
1708#if EV_FORK_ENABLE 2494#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 2495 array_free (fork, EMPTY);
1710#endif 2496#endif
2497#if EV_CLEANUP_ENABLE
2498 array_free (cleanup, EMPTY);
2499#endif
1711 array_free (prepare, EMPTY); 2500 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 2501 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 2502#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 2503 array_free (async, EMPTY);
1715#endif 2504#endif
1716 2505
1717 backend = 0; 2506 backend = 0;
2507
2508#if EV_MULTIPLICITY
2509 if (ev_is_default_loop (EV_A))
2510#endif
2511 ev_default_loop_ptr = 0;
2512#if EV_MULTIPLICITY
2513 else
2514 ev_free (EV_A);
2515#endif
1718} 2516}
1719 2517
1720#if EV_USE_INOTIFY 2518#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 2519inline_size void infy_fork (EV_P);
1722#endif 2520#endif
… …
1735#endif 2533#endif
1736#if EV_USE_INOTIFY 2534#if EV_USE_INOTIFY
1737 infy_fork (EV_A); 2535 infy_fork (EV_A);
1738#endif 2536#endif
1739 2537
2538#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1740 if (ev_is_active (&pipe_w)) 2539 if (ev_is_active (&pipe_w))
1741 { 2540 {
1742 /* this "locks" the handlers against writing to the pipe */ 2541 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1743 /* while we modify the fd vars */
1744 sig_pending = 1;
1745#if EV_ASYNC_ENABLE
1746 async_pending = 1;
1747#endif
1748 2542
1749 ev_ref (EV_A); 2543 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 2544 ev_io_stop (EV_A_ &pipe_w);
1751 2545
1752#if EV_USE_EVENTFD
1753 if (evfd >= 0)
1754 close (evfd);
1755#endif
1756
1757 if (evpipe [0] >= 0) 2546 if (evpipe [0] >= 0)
1758 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 2547 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]);
1761 }
1762 2548
1763 evpipe_init (EV_A); 2549 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */ 2550 /* iterate over everything, in case we missed something before */
1765 pipecb (EV_A_ &pipe_w, EV_READ); 2551 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1766 } 2552 }
2553#endif
1767 2554
1768 postfork = 0; 2555 postfork = 0;
1769} 2556}
1770 2557
1771#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1772 2559
1773struct ev_loop * 2560struct ev_loop * ecb_cold
1774ev_loop_new (unsigned int flags) 2561ev_loop_new (unsigned int flags) EV_THROW
1775{ 2562{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2563 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 2564
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 2565 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 2566 loop_init (EV_A_ flags);
1780 2567
1781 if (ev_backend (EV_A)) 2568 if (ev_backend (EV_A))
1782 return EV_A; 2569 return EV_A;
1783 2570
2571 ev_free (EV_A);
1784 return 0; 2572 return 0;
1785} 2573}
1786 2574
1787void
1788ev_loop_destroy (EV_P)
1789{
1790 loop_destroy (EV_A);
1791 ev_free (loop);
1792}
1793
1794void
1795ev_loop_fork (EV_P)
1796{
1797 postfork = 1; /* must be in line with ev_default_fork */
1798}
1799#endif /* multiplicity */ 2575#endif /* multiplicity */
1800 2576
1801#if EV_VERIFY 2577#if EV_VERIFY
1802static void noinline 2578static void noinline ecb_cold
1803verify_watcher (EV_P_ W w) 2579verify_watcher (EV_P_ W w)
1804{ 2580{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2581 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 2582
1807 if (w->pending) 2583 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2584 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 2585}
1810 2586
1811static void noinline 2587static void noinline ecb_cold
1812verify_heap (EV_P_ ANHE *heap, int N) 2588verify_heap (EV_P_ ANHE *heap, int N)
1813{ 2589{
1814 int i; 2590 int i;
1815 2591
1816 for (i = HEAP0; i < N + HEAP0; ++i) 2592 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 2597
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2598 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 2599 }
1824} 2600}
1825 2601
1826static void noinline 2602static void noinline ecb_cold
1827array_verify (EV_P_ W *ws, int cnt) 2603array_verify (EV_P_ W *ws, int cnt)
1828{ 2604{
1829 while (cnt--) 2605 while (cnt--)
1830 { 2606 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2607 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 2608 verify_watcher (EV_A_ ws [cnt]);
1833 } 2609 }
1834} 2610}
1835#endif 2611#endif
1836 2612
1837#if EV_MINIMAL < 2 2613#if EV_FEATURE_API
1838void 2614void ecb_cold
1839ev_loop_verify (EV_P) 2615ev_verify (EV_P) EV_THROW
1840{ 2616{
1841#if EV_VERIFY 2617#if EV_VERIFY
1842 int i; 2618 int i;
1843 WL w; 2619 WL w, w2;
1844 2620
1845 assert (activecnt >= -1); 2621 assert (activecnt >= -1);
1846 2622
1847 assert (fdchangemax >= fdchangecnt); 2623 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 2624 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2625 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 2626
1851 assert (anfdmax >= 0); 2627 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 2628 for (i = 0; i < anfdmax; ++i)
2629 {
2630 int j = 0;
2631
1853 for (w = anfds [i].head; w; w = w->next) 2632 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 2633 {
1855 verify_watcher (EV_A_ (W)w); 2634 verify_watcher (EV_A_ (W)w);
2635
2636 if (j++ & 1)
2637 {
2638 assert (("libev: io watcher list contains a loop", w != w2));
2639 w2 = w2->next;
2640 }
2641
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2642 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2643 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 2644 }
2645 }
1859 2646
1860 assert (timermax >= timercnt); 2647 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 2648 verify_heap (EV_A_ timers, timercnt);
1862 2649
1863#if EV_PERIODIC_ENABLE 2650#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 2665#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 2666 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 2667 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 2668#endif
1882 2669
2670#if EV_CLEANUP_ENABLE
2671 assert (cleanupmax >= cleanupcnt);
2672 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2673#endif
2674
1883#if EV_ASYNC_ENABLE 2675#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 2676 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 2677 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 2678#endif
1887 2679
2680#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 2681 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 2682 array_verify (EV_A_ (W *)prepares, preparecnt);
2683#endif
1890 2684
2685#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 2686 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 2687 array_verify (EV_A_ (W *)checks, checkcnt);
2688#endif
1893 2689
1894# if 0 2690# if 0
2691#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2692 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2693 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2694#endif
1897# endif 2695# endif
1898#endif 2696#endif
1899} 2697}
1900#endif 2698#endif
1901 2699
1902#if EV_MULTIPLICITY 2700#if EV_MULTIPLICITY
1903struct ev_loop * 2701struct ev_loop * ecb_cold
1904ev_default_loop_init (unsigned int flags)
1905#else 2702#else
1906int 2703int
2704#endif
1907ev_default_loop (unsigned int flags) 2705ev_default_loop (unsigned int flags) EV_THROW
1908#endif
1909{ 2706{
1910 if (!ev_default_loop_ptr) 2707 if (!ev_default_loop_ptr)
1911 { 2708 {
1912#if EV_MULTIPLICITY 2709#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 2710 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 2714
1918 loop_init (EV_A_ flags); 2715 loop_init (EV_A_ flags);
1919 2716
1920 if (ev_backend (EV_A)) 2717 if (ev_backend (EV_A))
1921 { 2718 {
1922#ifndef _WIN32 2719#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 2720 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 2721 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 2722 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2723 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 2724#endif
… …
1932 2729
1933 return ev_default_loop_ptr; 2730 return ev_default_loop_ptr;
1934} 2731}
1935 2732
1936void 2733void
1937ev_default_destroy (void) 2734ev_loop_fork (EV_P) EV_THROW
1938{ 2735{
1939#if EV_MULTIPLICITY 2736 postfork = 1;
1940 EV_P = ev_default_loop_ptr;
1941#endif
1942
1943 ev_default_loop_ptr = 0;
1944
1945#ifndef _WIN32
1946 ev_ref (EV_A); /* child watcher */
1947 ev_signal_stop (EV_A_ &childev);
1948#endif
1949
1950 loop_destroy (EV_A);
1951}
1952
1953void
1954ev_default_fork (void)
1955{
1956#if EV_MULTIPLICITY
1957 EV_P = ev_default_loop_ptr;
1958#endif
1959
1960 postfork = 1; /* must be in line with ev_loop_fork */
1961} 2737}
1962 2738
1963/*****************************************************************************/ 2739/*****************************************************************************/
1964 2740
1965void 2741void
… …
1967{ 2743{
1968 EV_CB_INVOKE ((W)w, revents); 2744 EV_CB_INVOKE ((W)w, revents);
1969} 2745}
1970 2746
1971unsigned int 2747unsigned int
1972ev_pending_count (EV_P) 2748ev_pending_count (EV_P) EV_THROW
1973{ 2749{
1974 int pri; 2750 int pri;
1975 unsigned int count = 0; 2751 unsigned int count = 0;
1976 2752
1977 for (pri = NUMPRI; pri--; ) 2753 for (pri = NUMPRI; pri--; )
… …
1981} 2757}
1982 2758
1983void noinline 2759void noinline
1984ev_invoke_pending (EV_P) 2760ev_invoke_pending (EV_P)
1985{ 2761{
1986 int pri; 2762 pendingpri = NUMPRI;
1987 2763
1988 for (pri = NUMPRI; pri--; ) 2764 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2765 {
2766 --pendingpri;
2767
1989 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
1990 { 2769 {
1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1992 2771
1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1995
1996 p->w->pending = 0; 2772 p->w->pending = 0;
1997 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
1998 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
1999 } 2775 }
2776 }
2000} 2777}
2001 2778
2002#if EV_IDLE_ENABLE 2779#if EV_IDLE_ENABLE
2003/* make idle watchers pending. this handles the "call-idle */ 2780/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */ 2781/* only when higher priorities are idle" logic */
… …
2056 EV_FREQUENT_CHECK; 2833 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 2834 feed_reverse (EV_A_ (W)w);
2058 } 2835 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2836 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 2837
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 2838 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 2839 }
2063} 2840}
2064 2841
2065#if EV_PERIODIC_ENABLE 2842#if EV_PERIODIC_ENABLE
2843
2844static void noinline
2845periodic_recalc (EV_P_ ev_periodic *w)
2846{
2847 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2848 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2849
2850 /* the above almost always errs on the low side */
2851 while (at <= ev_rt_now)
2852 {
2853 ev_tstamp nat = at + w->interval;
2854
2855 /* when resolution fails us, we use ev_rt_now */
2856 if (expect_false (nat == at))
2857 {
2858 at = ev_rt_now;
2859 break;
2860 }
2861
2862 at = nat;
2863 }
2864
2865 ev_at (w) = at;
2866}
2867
2066/* make periodics pending */ 2868/* make periodics pending */
2067inline_size void 2869inline_size void
2068periodics_reify (EV_P) 2870periodics_reify (EV_P)
2069{ 2871{
2070 EV_FREQUENT_CHECK; 2872 EV_FREQUENT_CHECK;
2071 2873
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 2875 {
2074 int feed_count = 0;
2075
2076 do 2876 do
2077 { 2877 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2878 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 2879
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2880 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 2889 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 2890 downheap (periodics, periodiccnt, HEAP0);
2091 } 2891 }
2092 else if (w->interval) 2892 else if (w->interval)
2093 { 2893 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2894 periodic_recalc (EV_A_ w);
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]); 2895 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 2896 downheap (periodics, periodiccnt, HEAP0);
2110 } 2897 }
2111 else 2898 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 2906 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 2907 }
2121} 2908}
2122 2909
2123/* simply recalculate all periodics */ 2910/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2911/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 2912static void noinline ecb_cold
2126periodics_reschedule (EV_P) 2913periodics_reschedule (EV_P)
2127{ 2914{
2128 int i; 2915 int i;
2129 2916
2130 /* adjust periodics after time jump */ 2917 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 2921
2135 if (w->reschedule_cb) 2922 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 2924 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2925 periodic_recalc (EV_A_ w);
2139 2926
2140 ANHE_at_cache (periodics [i]); 2927 ANHE_at_cache (periodics [i]);
2141 } 2928 }
2142 2929
2143 reheap (periodics, periodiccnt); 2930 reheap (periodics, periodiccnt);
2144} 2931}
2145#endif 2932#endif
2146 2933
2147/* adjust all timers by a given offset */ 2934/* adjust all timers by a given offset */
2148static void noinline 2935static void noinline ecb_cold
2149timers_reschedule (EV_P_ ev_tstamp adjust) 2936timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 2937{
2151 int i; 2938 int i;
2152 2939
2153 for (i = 0; i < timercnt; ++i) 2940 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 2944 ANHE_at_cache (*he);
2158 } 2945 }
2159} 2946}
2160 2947
2161/* fetch new monotonic and realtime times from the kernel */ 2948/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 2949/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 2950inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 2951time_update (EV_P_ ev_tstamp max_block)
2165{ 2952{
2166#if EV_USE_MONOTONIC 2953#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 2954 if (expect_true (have_monotonic))
… …
2190 * doesn't hurt either as we only do this on time-jumps or 2977 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 2978 * in the unlikely event of having been preempted here.
2192 */ 2979 */
2193 for (i = 4; --i; ) 2980 for (i = 4; --i; )
2194 { 2981 {
2982 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 2983 rtmn_diff = ev_rt_now - mn_now;
2196 2984
2985 diff = odiff - rtmn_diff;
2986
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2987 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2198 return; /* all is well */ 2988 return; /* all is well */
2199 2989
2200 ev_rt_now = ev_time (); 2990 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 2991 mn_now = get_clock ();
2202 now_floor = mn_now; 2992 now_floor = mn_now;
… …
2224 3014
2225 mn_now = ev_rt_now; 3015 mn_now = ev_rt_now;
2226 } 3016 }
2227} 3017}
2228 3018
2229void 3019int
2230ev_loop (EV_P_ int flags) 3020ev_run (EV_P_ int flags)
2231{ 3021{
2232#if EV_MINIMAL < 2 3022#if EV_FEATURE_API
2233 ++loop_depth; 3023 ++loop_depth;
2234#endif 3024#endif
2235 3025
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3026 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 3027
2238 loop_done = EVUNLOOP_CANCEL; 3028 loop_done = EVBREAK_CANCEL;
2239 3029
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3030 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 3031
2242 do 3032 do
2243 { 3033 {
2244#if EV_VERIFY >= 2 3034#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 3035 ev_verify (EV_A);
2246#endif 3036#endif
2247 3037
2248#ifndef _WIN32 3038#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 3039 if (expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 3040 if (expect_false (getpid () != curpid))
… …
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 3053 EV_INVOKE_PENDING;
2264 } 3054 }
2265#endif 3055#endif
2266 3056
3057#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 3058 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 3059 if (expect_false (preparecnt))
2269 { 3060 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3061 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 3062 EV_INVOKE_PENDING;
2272 } 3063 }
3064#endif
2273 3065
2274 if (expect_false (loop_done)) 3066 if (expect_false (loop_done))
2275 break; 3067 break;
2276 3068
2277 /* we might have forked, so reify kernel state if necessary */ 3069 /* we might have forked, so reify kernel state if necessary */
… …
2284 /* calculate blocking time */ 3076 /* calculate blocking time */
2285 { 3077 {
2286 ev_tstamp waittime = 0.; 3078 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 3079 ev_tstamp sleeptime = 0.;
2288 3080
3081 /* remember old timestamp for io_blocktime calculation */
3082 ev_tstamp prev_mn_now = mn_now;
3083
3084 /* update time to cancel out callback processing overhead */
3085 time_update (EV_A_ 1e100);
3086
3087 /* from now on, we want a pipe-wake-up */
3088 pipe_write_wanted = 1;
3089
3090 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3091
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3092 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 3093 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
2294 /* update time to cancel out callback processing overhead */
2295 time_update (EV_A_ 1e100);
2296
2297 waittime = MAX_BLOCKTIME; 3094 waittime = MAX_BLOCKTIME;
2298 3095
2299 if (timercnt) 3096 if (timercnt)
2300 { 3097 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3098 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 3099 if (waittime > to) waittime = to;
2303 } 3100 }
2304 3101
2305#if EV_PERIODIC_ENABLE 3102#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 3103 if (periodiccnt)
2307 { 3104 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3105 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 3106 if (waittime > to) waittime = to;
2310 } 3107 }
2311#endif 3108#endif
2312 3109
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3110 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 3111 if (expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 3112 waittime = timeout_blocktime;
3113
3114 /* at this point, we NEED to wait, so we have to ensure */
3115 /* to pass a minimum nonzero value to the backend */
3116 if (expect_false (waittime < backend_mintime))
3117 waittime = backend_mintime;
2316 3118
2317 /* extra check because io_blocktime is commonly 0 */ 3119 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 3120 if (expect_false (io_blocktime))
2319 { 3121 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3122 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 3123
2322 if (sleeptime > waittime - backend_fudge) 3124 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 3125 sleeptime = waittime - backend_mintime;
2324 3126
2325 if (expect_true (sleeptime > 0.)) 3127 if (expect_true (sleeptime > 0.))
2326 { 3128 {
2327 ev_sleep (sleeptime); 3129 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 3130 waittime -= sleeptime;
2329 } 3131 }
2330 } 3132 }
2331 } 3133 }
2332 3134
2333#if EV_MINIMAL < 2 3135#if EV_FEATURE_API
2334 ++loop_count; 3136 ++loop_count;
2335#endif 3137#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3138 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 3139 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3140 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3141
3142 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3143
3144 ECB_MEMORY_FENCE_ACQUIRE;
3145 if (pipe_write_skipped)
3146 {
3147 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3148 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3149 }
3150
2339 3151
2340 /* update ev_rt_now, do magic */ 3152 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 3153 time_update (EV_A_ waittime + sleeptime);
2342 } 3154 }
2343 3155
… …
2350#if EV_IDLE_ENABLE 3162#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 3163 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 3164 idle_reify (EV_A);
2353#endif 3165#endif
2354 3166
3167#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 3168 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 3169 if (expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3170 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3171#endif
2358 3172
2359 EV_INVOKE_PENDING; 3173 EV_INVOKE_PENDING;
2360 } 3174 }
2361 while (expect_true ( 3175 while (expect_true (
2362 activecnt 3176 activecnt
2363 && !loop_done 3177 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3178 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 3179 ));
2366 3180
2367 if (loop_done == EVUNLOOP_ONE) 3181 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 3182 loop_done = EVBREAK_CANCEL;
2369 3183
2370#if EV_MINIMAL < 2 3184#if EV_FEATURE_API
2371 --loop_depth; 3185 --loop_depth;
2372#endif 3186#endif
3187
3188 return activecnt;
2373} 3189}
2374 3190
2375void 3191void
2376ev_unloop (EV_P_ int how) 3192ev_break (EV_P_ int how) EV_THROW
2377{ 3193{
2378 loop_done = how; 3194 loop_done = how;
2379} 3195}
2380 3196
2381void 3197void
2382ev_ref (EV_P) 3198ev_ref (EV_P) EV_THROW
2383{ 3199{
2384 ++activecnt; 3200 ++activecnt;
2385} 3201}
2386 3202
2387void 3203void
2388ev_unref (EV_P) 3204ev_unref (EV_P) EV_THROW
2389{ 3205{
2390 --activecnt; 3206 --activecnt;
2391} 3207}
2392 3208
2393void 3209void
2394ev_now_update (EV_P) 3210ev_now_update (EV_P) EV_THROW
2395{ 3211{
2396 time_update (EV_A_ 1e100); 3212 time_update (EV_A_ 1e100);
2397} 3213}
2398 3214
2399void 3215void
2400ev_suspend (EV_P) 3216ev_suspend (EV_P) EV_THROW
2401{ 3217{
2402 ev_now_update (EV_A); 3218 ev_now_update (EV_A);
2403} 3219}
2404 3220
2405void 3221void
2406ev_resume (EV_P) 3222ev_resume (EV_P) EV_THROW
2407{ 3223{
2408 ev_tstamp mn_prev = mn_now; 3224 ev_tstamp mn_prev = mn_now;
2409 3225
2410 ev_now_update (EV_A); 3226 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 3227 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2450 w->pending = 0; 3266 w->pending = 0;
2451 } 3267 }
2452} 3268}
2453 3269
2454int 3270int
2455ev_clear_pending (EV_P_ void *w) 3271ev_clear_pending (EV_P_ void *w) EV_THROW
2456{ 3272{
2457 W w_ = (W)w; 3273 W w_ = (W)w;
2458 int pending = w_->pending; 3274 int pending = w_->pending;
2459 3275
2460 if (expect_true (pending)) 3276 if (expect_true (pending))
… …
2493} 3309}
2494 3310
2495/*****************************************************************************/ 3311/*****************************************************************************/
2496 3312
2497void noinline 3313void noinline
2498ev_io_start (EV_P_ ev_io *w) 3314ev_io_start (EV_P_ ev_io *w) EV_THROW
2499{ 3315{
2500 int fd = w->fd; 3316 int fd = w->fd;
2501 3317
2502 if (expect_false (ev_is_active (w))) 3318 if (expect_false (ev_is_active (w)))
2503 return; 3319 return;
2504 3320
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3321 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3322 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 3323
2508 EV_FREQUENT_CHECK; 3324 EV_FREQUENT_CHECK;
2509 3325
2510 ev_start (EV_A_ (W)w, 1); 3326 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3327 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2512 wlist_add (&anfds[fd].head, (WL)w); 3328 wlist_add (&anfds[fd].head, (WL)w);
2513 3329
3330 /* common bug, apparently */
3331 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3332
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3333 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 3334 w->events &= ~EV__IOFDSET;
2516 3335
2517 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2518} 3337}
2519 3338
2520void noinline 3339void noinline
2521ev_io_stop (EV_P_ ev_io *w) 3340ev_io_stop (EV_P_ ev_io *w) EV_THROW
2522{ 3341{
2523 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2525 return; 3344 return;
2526 3345
… …
2529 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2530 3349
2531 wlist_del (&anfds[w->fd].head, (WL)w); 3350 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 3351 ev_stop (EV_A_ (W)w);
2533 3352
2534 fd_change (EV_A_ w->fd, 1); 3353 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 3354
2536 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
2537} 3356}
2538 3357
2539void noinline 3358void noinline
2540ev_timer_start (EV_P_ ev_timer *w) 3359ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2541{ 3360{
2542 if (expect_false (ev_is_active (w))) 3361 if (expect_false (ev_is_active (w)))
2543 return; 3362 return;
2544 3363
2545 ev_at (w) += mn_now; 3364 ev_at (w) += mn_now;
… …
2559 3378
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3379 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 3380}
2562 3381
2563void noinline 3382void noinline
2564ev_timer_stop (EV_P_ ev_timer *w) 3383ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2565{ 3384{
2566 clear_pending (EV_A_ (W)w); 3385 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3386 if (expect_false (!ev_is_active (w)))
2568 return; 3387 return;
2569 3388
… …
2581 timers [active] = timers [timercnt + HEAP0]; 3400 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 3401 adjustheap (timers, timercnt, active);
2583 } 3402 }
2584 } 3403 }
2585 3404
2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now; 3405 ev_at (w) -= mn_now;
2589 3406
2590 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
3408
3409 EV_FREQUENT_CHECK;
2591} 3410}
2592 3411
2593void noinline 3412void noinline
2594ev_timer_again (EV_P_ ev_timer *w) 3413ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2595{ 3414{
2596 EV_FREQUENT_CHECK; 3415 EV_FREQUENT_CHECK;
3416
3417 clear_pending (EV_A_ (W)w);
2597 3418
2598 if (ev_is_active (w)) 3419 if (ev_is_active (w))
2599 { 3420 {
2600 if (w->repeat) 3421 if (w->repeat)
2601 { 3422 {
… …
2614 3435
2615 EV_FREQUENT_CHECK; 3436 EV_FREQUENT_CHECK;
2616} 3437}
2617 3438
2618ev_tstamp 3439ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 3440ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2620{ 3441{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3442 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2622} 3443}
2623 3444
2624#if EV_PERIODIC_ENABLE 3445#if EV_PERIODIC_ENABLE
2625void noinline 3446void noinline
2626ev_periodic_start (EV_P_ ev_periodic *w) 3447ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2627{ 3448{
2628 if (expect_false (ev_is_active (w))) 3449 if (expect_false (ev_is_active (w)))
2629 return; 3450 return;
2630 3451
2631 if (w->reschedule_cb) 3452 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3453 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 3454 else if (w->interval)
2634 { 3455 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3456 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2636 /* this formula differs from the one in periodic_reify because we do not always round up */ 3457 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 3458 }
2639 else 3459 else
2640 ev_at (w) = w->offset; 3460 ev_at (w) = w->offset;
2641 3461
2642 EV_FREQUENT_CHECK; 3462 EV_FREQUENT_CHECK;
… …
2652 3472
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3473 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 3474}
2655 3475
2656void noinline 3476void noinline
2657ev_periodic_stop (EV_P_ ev_periodic *w) 3477ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2658{ 3478{
2659 clear_pending (EV_A_ (W)w); 3479 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 3480 if (expect_false (!ev_is_active (w)))
2661 return; 3481 return;
2662 3482
… …
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 3494 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 3495 adjustheap (periodics, periodiccnt, active);
2676 } 3496 }
2677 } 3497 }
2678 3498
2679 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w); 3499 ev_stop (EV_A_ (W)w);
3500
3501 EV_FREQUENT_CHECK;
2682} 3502}
2683 3503
2684void noinline 3504void noinline
2685ev_periodic_again (EV_P_ ev_periodic *w) 3505ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2686{ 3506{
2687 /* TODO: use adjustheap and recalculation */ 3507 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 3508 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 3509 ev_periodic_start (EV_A_ w);
2690} 3510}
… …
2692 3512
2693#ifndef SA_RESTART 3513#ifndef SA_RESTART
2694# define SA_RESTART 0 3514# define SA_RESTART 0
2695#endif 3515#endif
2696 3516
3517#if EV_SIGNAL_ENABLE
3518
2697void noinline 3519void noinline
2698ev_signal_start (EV_P_ ev_signal *w) 3520ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2699{ 3521{
2700 if (expect_false (ev_is_active (w))) 3522 if (expect_false (ev_is_active (w)))
2701 return; 3523 return;
2702 3524
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3525 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2705#if EV_MULTIPLICITY 3527#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops", 3528 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3529 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2708 3530
2709 signals [w->signum - 1].loop = EV_A; 3531 signals [w->signum - 1].loop = EV_A;
3532 ECB_MEMORY_FENCE_RELEASE;
2710#endif 3533#endif
2711 3534
2712 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2713 3536
2714#if EV_USE_SIGNALFD 3537#if EV_USE_SIGNALFD
… …
2761 sa.sa_handler = ev_sighandler; 3584 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 3585 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3586 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 3587 sigaction (w->signum, &sa, 0);
2765 3588
3589 if (origflags & EVFLAG_NOSIGMASK)
3590 {
2766 sigemptyset (&sa.sa_mask); 3591 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 3592 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3593 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3594 }
2769#endif 3595#endif
2770 } 3596 }
2771 3597
2772 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
2773} 3599}
2774 3600
2775void noinline 3601void noinline
2776ev_signal_stop (EV_P_ ev_signal *w) 3602ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2777{ 3603{
2778 clear_pending (EV_A_ (W)w); 3604 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 3605 if (expect_false (!ev_is_active (w)))
2780 return; 3606 return;
2781 3607
… …
2807 } 3633 }
2808 3634
2809 EV_FREQUENT_CHECK; 3635 EV_FREQUENT_CHECK;
2810} 3636}
2811 3637
3638#endif
3639
3640#if EV_CHILD_ENABLE
3641
2812void 3642void
2813ev_child_start (EV_P_ ev_child *w) 3643ev_child_start (EV_P_ ev_child *w) EV_THROW
2814{ 3644{
2815#if EV_MULTIPLICITY 3645#if EV_MULTIPLICITY
2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3646 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2817#endif 3647#endif
2818 if (expect_false (ev_is_active (w))) 3648 if (expect_false (ev_is_active (w)))
2819 return; 3649 return;
2820 3650
2821 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2822 3652
2823 ev_start (EV_A_ (W)w, 1); 3653 ev_start (EV_A_ (W)w, 1);
2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3654 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2825 3655
2826 EV_FREQUENT_CHECK; 3656 EV_FREQUENT_CHECK;
2827} 3657}
2828 3658
2829void 3659void
2830ev_child_stop (EV_P_ ev_child *w) 3660ev_child_stop (EV_P_ ev_child *w) EV_THROW
2831{ 3661{
2832 clear_pending (EV_A_ (W)w); 3662 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3663 if (expect_false (!ev_is_active (w)))
2834 return; 3664 return;
2835 3665
2836 EV_FREQUENT_CHECK; 3666 EV_FREQUENT_CHECK;
2837 3667
2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3668 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2839 ev_stop (EV_A_ (W)w); 3669 ev_stop (EV_A_ (W)w);
2840 3670
2841 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
2842} 3672}
3673
3674#endif
2843 3675
2844#if EV_STAT_ENABLE 3676#if EV_STAT_ENABLE
2845 3677
2846# ifdef _WIN32 3678# ifdef _WIN32
2847# undef lstat 3679# undef lstat
… …
2853#define MIN_STAT_INTERVAL 0.1074891 3685#define MIN_STAT_INTERVAL 0.1074891
2854 3686
2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3687static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2856 3688
2857#if EV_USE_INOTIFY 3689#if EV_USE_INOTIFY
2858# define EV_INOTIFY_BUFSIZE 8192 3690
3691/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3692# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2859 3693
2860static void noinline 3694static void noinline
2861infy_add (EV_P_ ev_stat *w) 3695infy_add (EV_P_ ev_stat *w)
2862{ 3696{
2863 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3697 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
… …
2906 if (!pend || pend == path) 3740 if (!pend || pend == path)
2907 break; 3741 break;
2908 3742
2909 *pend = 0; 3743 *pend = 0;
2910 w->wd = inotify_add_watch (fs_fd, path, mask); 3744 w->wd = inotify_add_watch (fs_fd, path, mask);
2911 } 3745 }
2912 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3746 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2913 } 3747 }
2914 } 3748 }
2915 3749
2916 if (w->wd >= 0) 3750 if (w->wd >= 0)
2917 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3751 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2918 3752
2919 /* now re-arm timer, if required */ 3753 /* now re-arm timer, if required */
2920 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3754 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2921 ev_timer_again (EV_A_ &w->timer); 3755 ev_timer_again (EV_A_ &w->timer);
2922 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3756 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2930 3764
2931 if (wd < 0) 3765 if (wd < 0)
2932 return; 3766 return;
2933 3767
2934 w->wd = -2; 3768 w->wd = -2;
2935 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3769 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2936 wlist_del (&fs_hash [slot].head, (WL)w); 3770 wlist_del (&fs_hash [slot].head, (WL)w);
2937 3771
2938 /* remove this watcher, if others are watching it, they will rearm */ 3772 /* remove this watcher, if others are watching it, they will rearm */
2939 inotify_rm_watch (fs_fd, wd); 3773 inotify_rm_watch (fs_fd, wd);
2940} 3774}
… …
2942static void noinline 3776static void noinline
2943infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3777infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2944{ 3778{
2945 if (slot < 0) 3779 if (slot < 0)
2946 /* overflow, need to check for all hash slots */ 3780 /* overflow, need to check for all hash slots */
2947 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3781 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2948 infy_wd (EV_A_ slot, wd, ev); 3782 infy_wd (EV_A_ slot, wd, ev);
2949 else 3783 else
2950 { 3784 {
2951 WL w_; 3785 WL w_;
2952 3786
2953 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3787 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2954 { 3788 {
2955 ev_stat *w = (ev_stat *)w_; 3789 ev_stat *w = (ev_stat *)w_;
2956 w_ = w_->next; /* lets us remove this watcher and all before it */ 3790 w_ = w_->next; /* lets us remove this watcher and all before it */
2957 3791
2958 if (w->wd == wd || wd == -1) 3792 if (w->wd == wd || wd == -1)
2959 { 3793 {
2960 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3794 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2961 { 3795 {
2962 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3796 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2963 w->wd = -1; 3797 w->wd = -1;
2964 infy_add (EV_A_ w); /* re-add, no matter what */ 3798 infy_add (EV_A_ w); /* re-add, no matter what */
2965 } 3799 }
2966 3800
2967 stat_timer_cb (EV_A_ &w->timer, 0); 3801 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2972 3806
2973static void 3807static void
2974infy_cb (EV_P_ ev_io *w, int revents) 3808infy_cb (EV_P_ ev_io *w, int revents)
2975{ 3809{
2976 char buf [EV_INOTIFY_BUFSIZE]; 3810 char buf [EV_INOTIFY_BUFSIZE];
2977 struct inotify_event *ev = (struct inotify_event *)buf;
2978 int ofs; 3811 int ofs;
2979 int len = read (fs_fd, buf, sizeof (buf)); 3812 int len = read (fs_fd, buf, sizeof (buf));
2980 3813
2981 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3814 for (ofs = 0; ofs < len; )
3815 {
3816 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2982 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3817 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3818 ofs += sizeof (struct inotify_event) + ev->len;
3819 }
2983} 3820}
2984 3821
2985inline_size void 3822inline_size void ecb_cold
2986check_2625 (EV_P) 3823ev_check_2625 (EV_P)
2987{ 3824{
2988 /* kernels < 2.6.25 are borked 3825 /* kernels < 2.6.25 are borked
2989 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3826 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2990 */ 3827 */
2991 struct utsname buf; 3828 if (ev_linux_version () < 0x020619)
2992 int major, minor, micro;
2993
2994 if (uname (&buf))
2995 return;
2996
2997 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2998 return;
2999
3000 if (major < 2
3001 || (major == 2 && minor < 6)
3002 || (major == 2 && minor == 6 && micro < 25))
3003 return; 3829 return;
3004 3830
3005 fs_2625 = 1; 3831 fs_2625 = 1;
3006} 3832}
3007 3833
3008inline_size int 3834inline_size int
3009infy_newfd (void) 3835infy_newfd (void)
3010{ 3836{
3011#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3837#if defined IN_CLOEXEC && defined IN_NONBLOCK
3012 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3838 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3013 if (fd >= 0) 3839 if (fd >= 0)
3014 return fd; 3840 return fd;
3015#endif 3841#endif
3016 return inotify_init (); 3842 return inotify_init ();
… …
3022 if (fs_fd != -2) 3848 if (fs_fd != -2)
3023 return; 3849 return;
3024 3850
3025 fs_fd = -1; 3851 fs_fd = -1;
3026 3852
3027 check_2625 (EV_A); 3853 ev_check_2625 (EV_A);
3028 3854
3029 fs_fd = infy_newfd (); 3855 fs_fd = infy_newfd ();
3030 3856
3031 if (fs_fd >= 0) 3857 if (fs_fd >= 0)
3032 { 3858 {
… …
3057 ev_io_set (&fs_w, fs_fd, EV_READ); 3883 ev_io_set (&fs_w, fs_fd, EV_READ);
3058 ev_io_start (EV_A_ &fs_w); 3884 ev_io_start (EV_A_ &fs_w);
3059 ev_unref (EV_A); 3885 ev_unref (EV_A);
3060 } 3886 }
3061 3887
3062 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3888 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3063 { 3889 {
3064 WL w_ = fs_hash [slot].head; 3890 WL w_ = fs_hash [slot].head;
3065 fs_hash [slot].head = 0; 3891 fs_hash [slot].head = 0;
3066 3892
3067 while (w_) 3893 while (w_)
… …
3091#else 3917#else
3092# define EV_LSTAT(p,b) lstat (p, b) 3918# define EV_LSTAT(p,b) lstat (p, b)
3093#endif 3919#endif
3094 3920
3095void 3921void
3096ev_stat_stat (EV_P_ ev_stat *w) 3922ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3097{ 3923{
3098 if (lstat (w->path, &w->attr) < 0) 3924 if (lstat (w->path, &w->attr) < 0)
3099 w->attr.st_nlink = 0; 3925 w->attr.st_nlink = 0;
3100 else if (!w->attr.st_nlink) 3926 else if (!w->attr.st_nlink)
3101 w->attr.st_nlink = 1; 3927 w->attr.st_nlink = 1;
… …
3140 ev_feed_event (EV_A_ w, EV_STAT); 3966 ev_feed_event (EV_A_ w, EV_STAT);
3141 } 3967 }
3142} 3968}
3143 3969
3144void 3970void
3145ev_stat_start (EV_P_ ev_stat *w) 3971ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3146{ 3972{
3147 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3148 return; 3974 return;
3149 3975
3150 ev_stat_stat (EV_A_ w); 3976 ev_stat_stat (EV_A_ w);
… …
3171 3997
3172 EV_FREQUENT_CHECK; 3998 EV_FREQUENT_CHECK;
3173} 3999}
3174 4000
3175void 4001void
3176ev_stat_stop (EV_P_ ev_stat *w) 4002ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3177{ 4003{
3178 clear_pending (EV_A_ (W)w); 4004 clear_pending (EV_A_ (W)w);
3179 if (expect_false (!ev_is_active (w))) 4005 if (expect_false (!ev_is_active (w)))
3180 return; 4006 return;
3181 4007
… …
3197} 4023}
3198#endif 4024#endif
3199 4025
3200#if EV_IDLE_ENABLE 4026#if EV_IDLE_ENABLE
3201void 4027void
3202ev_idle_start (EV_P_ ev_idle *w) 4028ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3203{ 4029{
3204 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
3205 return; 4031 return;
3206 4032
3207 pri_adjust (EV_A_ (W)w); 4033 pri_adjust (EV_A_ (W)w);
… …
3220 4046
3221 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
3222} 4048}
3223 4049
3224void 4050void
3225ev_idle_stop (EV_P_ ev_idle *w) 4051ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3226{ 4052{
3227 clear_pending (EV_A_ (W)w); 4053 clear_pending (EV_A_ (W)w);
3228 if (expect_false (!ev_is_active (w))) 4054 if (expect_false (!ev_is_active (w)))
3229 return; 4055 return;
3230 4056
… …
3242 4068
3243 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
3244} 4070}
3245#endif 4071#endif
3246 4072
4073#if EV_PREPARE_ENABLE
3247void 4074void
3248ev_prepare_start (EV_P_ ev_prepare *w) 4075ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3249{ 4076{
3250 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
3251 return; 4078 return;
3252 4079
3253 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
… …
3258 4085
3259 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3260} 4087}
3261 4088
3262void 4089void
3263ev_prepare_stop (EV_P_ ev_prepare *w) 4090ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3264{ 4091{
3265 clear_pending (EV_A_ (W)w); 4092 clear_pending (EV_A_ (W)w);
3266 if (expect_false (!ev_is_active (w))) 4093 if (expect_false (!ev_is_active (w)))
3267 return; 4094 return;
3268 4095
… …
3277 4104
3278 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
3279 4106
3280 EV_FREQUENT_CHECK; 4107 EV_FREQUENT_CHECK;
3281} 4108}
4109#endif
3282 4110
4111#if EV_CHECK_ENABLE
3283void 4112void
3284ev_check_start (EV_P_ ev_check *w) 4113ev_check_start (EV_P_ ev_check *w) EV_THROW
3285{ 4114{
3286 if (expect_false (ev_is_active (w))) 4115 if (expect_false (ev_is_active (w)))
3287 return; 4116 return;
3288 4117
3289 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
… …
3294 4123
3295 EV_FREQUENT_CHECK; 4124 EV_FREQUENT_CHECK;
3296} 4125}
3297 4126
3298void 4127void
3299ev_check_stop (EV_P_ ev_check *w) 4128ev_check_stop (EV_P_ ev_check *w) EV_THROW
3300{ 4129{
3301 clear_pending (EV_A_ (W)w); 4130 clear_pending (EV_A_ (W)w);
3302 if (expect_false (!ev_is_active (w))) 4131 if (expect_false (!ev_is_active (w)))
3303 return; 4132 return;
3304 4133
… …
3313 4142
3314 ev_stop (EV_A_ (W)w); 4143 ev_stop (EV_A_ (W)w);
3315 4144
3316 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3317} 4146}
4147#endif
3318 4148
3319#if EV_EMBED_ENABLE 4149#if EV_EMBED_ENABLE
3320void noinline 4150void noinline
3321ev_embed_sweep (EV_P_ ev_embed *w) 4151ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3322{ 4152{
3323 ev_loop (w->other, EVLOOP_NONBLOCK); 4153 ev_run (w->other, EVRUN_NOWAIT);
3324} 4154}
3325 4155
3326static void 4156static void
3327embed_io_cb (EV_P_ ev_io *io, int revents) 4157embed_io_cb (EV_P_ ev_io *io, int revents)
3328{ 4158{
3329 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4159 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3330 4160
3331 if (ev_cb (w)) 4161 if (ev_cb (w))
3332 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4162 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3333 else 4163 else
3334 ev_loop (w->other, EVLOOP_NONBLOCK); 4164 ev_run (w->other, EVRUN_NOWAIT);
3335} 4165}
3336 4166
3337static void 4167static void
3338embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4168embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3339{ 4169{
… …
3343 EV_P = w->other; 4173 EV_P = w->other;
3344 4174
3345 while (fdchangecnt) 4175 while (fdchangecnt)
3346 { 4176 {
3347 fd_reify (EV_A); 4177 fd_reify (EV_A);
3348 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4178 ev_run (EV_A_ EVRUN_NOWAIT);
3349 } 4179 }
3350 } 4180 }
3351} 4181}
3352 4182
3353static void 4183static void
… …
3359 4189
3360 { 4190 {
3361 EV_P = w->other; 4191 EV_P = w->other;
3362 4192
3363 ev_loop_fork (EV_A); 4193 ev_loop_fork (EV_A);
3364 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4194 ev_run (EV_A_ EVRUN_NOWAIT);
3365 } 4195 }
3366 4196
3367 ev_embed_start (EV_A_ w); 4197 ev_embed_start (EV_A_ w);
3368} 4198}
3369 4199
… …
3374 ev_idle_stop (EV_A_ idle); 4204 ev_idle_stop (EV_A_ idle);
3375} 4205}
3376#endif 4206#endif
3377 4207
3378void 4208void
3379ev_embed_start (EV_P_ ev_embed *w) 4209ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3380{ 4210{
3381 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
3382 return; 4212 return;
3383 4213
3384 { 4214 {
… …
3405 4235
3406 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3407} 4237}
3408 4238
3409void 4239void
3410ev_embed_stop (EV_P_ ev_embed *w) 4240ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3411{ 4241{
3412 clear_pending (EV_A_ (W)w); 4242 clear_pending (EV_A_ (W)w);
3413 if (expect_false (!ev_is_active (w))) 4243 if (expect_false (!ev_is_active (w)))
3414 return; 4244 return;
3415 4245
… …
3417 4247
3418 ev_io_stop (EV_A_ &w->io); 4248 ev_io_stop (EV_A_ &w->io);
3419 ev_prepare_stop (EV_A_ &w->prepare); 4249 ev_prepare_stop (EV_A_ &w->prepare);
3420 ev_fork_stop (EV_A_ &w->fork); 4250 ev_fork_stop (EV_A_ &w->fork);
3421 4251
4252 ev_stop (EV_A_ (W)w);
4253
3422 EV_FREQUENT_CHECK; 4254 EV_FREQUENT_CHECK;
3423} 4255}
3424#endif 4256#endif
3425 4257
3426#if EV_FORK_ENABLE 4258#if EV_FORK_ENABLE
3427void 4259void
3428ev_fork_start (EV_P_ ev_fork *w) 4260ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3429{ 4261{
3430 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3431 return; 4263 return;
3432 4264
3433 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
… …
3438 4270
3439 EV_FREQUENT_CHECK; 4271 EV_FREQUENT_CHECK;
3440} 4272}
3441 4273
3442void 4274void
3443ev_fork_stop (EV_P_ ev_fork *w) 4275ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3444{ 4276{
3445 clear_pending (EV_A_ (W)w); 4277 clear_pending (EV_A_ (W)w);
3446 if (expect_false (!ev_is_active (w))) 4278 if (expect_false (!ev_is_active (w)))
3447 return; 4279 return;
3448 4280
… …
3459 4291
3460 EV_FREQUENT_CHECK; 4292 EV_FREQUENT_CHECK;
3461} 4293}
3462#endif 4294#endif
3463 4295
4296#if EV_CLEANUP_ENABLE
4297void
4298ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4299{
4300 if (expect_false (ev_is_active (w)))
4301 return;
4302
4303 EV_FREQUENT_CHECK;
4304
4305 ev_start (EV_A_ (W)w, ++cleanupcnt);
4306 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4307 cleanups [cleanupcnt - 1] = w;
4308
4309 /* cleanup watchers should never keep a refcount on the loop */
4310 ev_unref (EV_A);
4311 EV_FREQUENT_CHECK;
4312}
4313
4314void
4315ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4316{
4317 clear_pending (EV_A_ (W)w);
4318 if (expect_false (!ev_is_active (w)))
4319 return;
4320
4321 EV_FREQUENT_CHECK;
4322 ev_ref (EV_A);
4323
4324 {
4325 int active = ev_active (w);
4326
4327 cleanups [active - 1] = cleanups [--cleanupcnt];
4328 ev_active (cleanups [active - 1]) = active;
4329 }
4330
4331 ev_stop (EV_A_ (W)w);
4332
4333 EV_FREQUENT_CHECK;
4334}
4335#endif
4336
3464#if EV_ASYNC_ENABLE 4337#if EV_ASYNC_ENABLE
3465void 4338void
3466ev_async_start (EV_P_ ev_async *w) 4339ev_async_start (EV_P_ ev_async *w) EV_THROW
3467{ 4340{
3468 if (expect_false (ev_is_active (w))) 4341 if (expect_false (ev_is_active (w)))
3469 return; 4342 return;
4343
4344 w->sent = 0;
3470 4345
3471 evpipe_init (EV_A); 4346 evpipe_init (EV_A);
3472 4347
3473 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3474 4349
… …
3478 4353
3479 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3480} 4355}
3481 4356
3482void 4357void
3483ev_async_stop (EV_P_ ev_async *w) 4358ev_async_stop (EV_P_ ev_async *w) EV_THROW
3484{ 4359{
3485 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3486 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3487 return; 4362 return;
3488 4363
… …
3499 4374
3500 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
3501} 4376}
3502 4377
3503void 4378void
3504ev_async_send (EV_P_ ev_async *w) 4379ev_async_send (EV_P_ ev_async *w) EV_THROW
3505{ 4380{
3506 w->sent = 1; 4381 w->sent = 1;
3507 evpipe_write (EV_A_ &async_pending); 4382 evpipe_write (EV_A_ &async_pending);
3508} 4383}
3509#endif 4384#endif
… …
3546 4421
3547 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4422 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3548} 4423}
3549 4424
3550void 4425void
3551ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4426ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3552{ 4427{
3553 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4428 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3554 4429
3555 if (expect_false (!once)) 4430 if (expect_false (!once))
3556 { 4431 {
3557 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4432 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3558 return; 4433 return;
3559 } 4434 }
3560 4435
3561 once->cb = cb; 4436 once->cb = cb;
3562 once->arg = arg; 4437 once->arg = arg;
… …
3577} 4452}
3578 4453
3579/*****************************************************************************/ 4454/*****************************************************************************/
3580 4455
3581#if EV_WALK_ENABLE 4456#if EV_WALK_ENABLE
3582void 4457void ecb_cold
3583ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4458ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3584{ 4459{
3585 int i, j; 4460 int i, j;
3586 ev_watcher_list *wl, *wn; 4461 ev_watcher_list *wl, *wn;
3587 4462
3588 if (types & (EV_IO | EV_EMBED)) 4463 if (types & (EV_IO | EV_EMBED))
… …
3631 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4506 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3632#endif 4507#endif
3633 4508
3634#if EV_IDLE_ENABLE 4509#if EV_IDLE_ENABLE
3635 if (types & EV_IDLE) 4510 if (types & EV_IDLE)
3636 for (j = NUMPRI; i--; ) 4511 for (j = NUMPRI; j--; )
3637 for (i = idlecnt [j]; i--; ) 4512 for (i = idlecnt [j]; i--; )
3638 cb (EV_A_ EV_IDLE, idles [j][i]); 4513 cb (EV_A_ EV_IDLE, idles [j][i]);
3639#endif 4514#endif
3640 4515
3641#if EV_FORK_ENABLE 4516#if EV_FORK_ENABLE
… …
3649 if (types & EV_ASYNC) 4524 if (types & EV_ASYNC)
3650 for (i = asynccnt; i--; ) 4525 for (i = asynccnt; i--; )
3651 cb (EV_A_ EV_ASYNC, asyncs [i]); 4526 cb (EV_A_ EV_ASYNC, asyncs [i]);
3652#endif 4527#endif
3653 4528
4529#if EV_PREPARE_ENABLE
3654 if (types & EV_PREPARE) 4530 if (types & EV_PREPARE)
3655 for (i = preparecnt; i--; ) 4531 for (i = preparecnt; i--; )
3656#if EV_EMBED_ENABLE 4532# if EV_EMBED_ENABLE
3657 if (ev_cb (prepares [i]) != embed_prepare_cb) 4533 if (ev_cb (prepares [i]) != embed_prepare_cb)
3658#endif 4534# endif
3659 cb (EV_A_ EV_PREPARE, prepares [i]); 4535 cb (EV_A_ EV_PREPARE, prepares [i]);
4536#endif
3660 4537
4538#if EV_CHECK_ENABLE
3661 if (types & EV_CHECK) 4539 if (types & EV_CHECK)
3662 for (i = checkcnt; i--; ) 4540 for (i = checkcnt; i--; )
3663 cb (EV_A_ EV_CHECK, checks [i]); 4541 cb (EV_A_ EV_CHECK, checks [i]);
4542#endif
3664 4543
4544#if EV_SIGNAL_ENABLE
3665 if (types & EV_SIGNAL) 4545 if (types & EV_SIGNAL)
3666 for (i = 0; i < EV_NSIG - 1; ++i) 4546 for (i = 0; i < EV_NSIG - 1; ++i)
3667 for (wl = signals [i].head; wl; ) 4547 for (wl = signals [i].head; wl; )
3668 { 4548 {
3669 wn = wl->next; 4549 wn = wl->next;
3670 cb (EV_A_ EV_SIGNAL, wl); 4550 cb (EV_A_ EV_SIGNAL, wl);
3671 wl = wn; 4551 wl = wn;
3672 } 4552 }
4553#endif
3673 4554
4555#if EV_CHILD_ENABLE
3674 if (types & EV_CHILD) 4556 if (types & EV_CHILD)
3675 for (i = EV_PID_HASHSIZE; i--; ) 4557 for (i = (EV_PID_HASHSIZE); i--; )
3676 for (wl = childs [i]; wl; ) 4558 for (wl = childs [i]; wl; )
3677 { 4559 {
3678 wn = wl->next; 4560 wn = wl->next;
3679 cb (EV_A_ EV_CHILD, wl); 4561 cb (EV_A_ EV_CHILD, wl);
3680 wl = wn; 4562 wl = wn;
3681 } 4563 }
4564#endif
3682/* EV_STAT 0x00001000 /* stat data changed */ 4565/* EV_STAT 0x00001000 /* stat data changed */
3683/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4566/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3684} 4567}
3685#endif 4568#endif
3686 4569
3687#if EV_MULTIPLICITY 4570#if EV_MULTIPLICITY
3688 #include "ev_wrap.h" 4571 #include "ev_wrap.h"
3689#endif 4572#endif
3690 4573
3691#ifdef __cplusplus
3692}
3693#endif
3694

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