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Comparing libev/ev.c (file contents):
Revision 1.320 by root, Fri Dec 4 20:25:06 2009 UTC vs.
Revision 1.437 by root, Tue May 29 21:03:22 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
163 173
164#include <assert.h> 174#include <assert.h>
165#include <errno.h> 175#include <errno.h>
166#include <sys/types.h> 176#include <sys/types.h>
167#include <time.h> 177#include <time.h>
178#include <limits.h>
168 179
169#include <signal.h> 180#include <signal.h>
170 181
171#ifdef EV_H 182#ifdef EV_H
172# include EV_H 183# include EV_H
173#else 184#else
174# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
175#endif 197#endif
176 198
177#ifndef _WIN32 199#ifndef _WIN32
178# include <sys/time.h> 200# include <sys/time.h>
179# include <sys/wait.h> 201# include <sys/wait.h>
180# include <unistd.h> 202# include <unistd.h>
181#else 203#else
182# include <io.h> 204# include <io.h>
183# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
184# include <windows.h> 207# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
187# endif 210# endif
211# undef EV_AVOID_STDIO
188#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
189 221
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
191 223
192/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG) 225#if defined EV_NSIG
194/* use what's provided */ 226/* use what's provided */
195#elif defined (NSIG) 227#elif defined NSIG
196# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 229#elif defined _NSIG
198# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX) 231#elif defined SIGMAX
200# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX) 233#elif defined SIG_MAX
202# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
204# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG) 237#elif defined MAXSIG
206# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 239#elif defined MAX_SIG
208# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 243#elif defined _sys_nsig
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 245#else
214# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
216# define EV_NSIG 65 249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
217#endif 254#endif
218 255
219#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 259# else
223# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
224# endif 261# endif
225#endif 262#endif
226 263
227#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 267# else
231# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
232# endif 269# endif
233#endif 270#endif
234 271
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 274#endif
238 275
239#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 279# else
243# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
244# endif 281# endif
245#endif 282#endif
246 283
247#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 286#endif
250 287
251#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
252# ifdef _WIN32 289# ifdef _WIN32
253# define EV_USE_POLL 0 290# define EV_USE_POLL 0
254# else 291# else
255# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 293# endif
257#endif 294#endif
258 295
259#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 299# else
263# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
264# endif 301# endif
265#endif 302#endif
266 303
… …
272# define EV_USE_PORT 0 309# define EV_USE_PORT 0
273#endif 310#endif
274 311
275#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 315# else
279# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
280# endif 317# endif
281#endif 318#endif
282 319
283#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 322#endif
290 323
291#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 326#endif
298 327
299#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 331# else
303# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
304# endif 333# endif
305#endif 334#endif
306 335
307#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 339# else
311# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
312# endif 341# endif
313#endif 342#endif
314 343
… …
317# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
319#endif 348#endif
320 349
321#ifndef EV_VERIFY 350#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 352#endif
324 353
325#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 356#endif
328 357
329#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 360#endif
332 361
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h> 365# include <sys/syscall.h>
337# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
341# else 370# else
… …
344# endif 373# endif
345#endif 374#endif
346 375
347/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
349#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
352#endif 387#endif
353 388
… …
360# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
362#endif 397#endif
363 398
364#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
366# include <sys/select.h> 402# include <sys/select.h>
367# endif 403# endif
368#endif 404#endif
369 405
370#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 407# include <sys/statfs.h>
373# include <sys/inotify.h> 408# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
378# endif 413# endif
379#endif
380
381#if EV_SELECT_IS_WINSOCKET
382# include <winsock.h>
383#endif 414#endif
384 415
385#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
387# include <stdint.h> 418# include <stdint.h>
… …
393# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
394# else 425# else
395# define EFD_CLOEXEC 02000000 426# define EFD_CLOEXEC 02000000
396# endif 427# endif
397# endif 428# endif
398# ifdef __cplusplus
399extern "C" {
400# endif
401int eventfd (unsigned int initval, int flags); 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
402# ifdef __cplusplus
403}
404# endif
405#endif 430#endif
406 431
407#if EV_USE_SIGNALFD 432#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
409# include <stdint.h> 434# include <stdint.h>
… …
415# define SFD_CLOEXEC O_CLOEXEC 440# define SFD_CLOEXEC O_CLOEXEC
416# else 441# else
417# define SFD_CLOEXEC 02000000 442# define SFD_CLOEXEC 02000000
418# endif 443# endif
419# endif 444# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags); 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
424 446
425struct signalfd_siginfo 447struct signalfd_siginfo
426{ 448{
427 uint32_t ssi_signo; 449 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)]; 450 char pad[128 - sizeof (uint32_t)];
429}; 451};
430# ifdef __cplusplus
431}
432# endif 452#endif
433#endif
434
435 453
436/**/ 454/**/
437 455
438#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
440#else 458#else
441# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
442#endif 460#endif
443 461
444/* 462/*
445 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
446 * It is added to ev_rt_now when scheduling periodics
447 * to ensure progress, time-wise, even when rounding
448 * errors are against us.
449 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
450 * Better solutions welcome.
451 */ 465 */
452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
453 468
454#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
455#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
456 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
457#if __GNUC__ >= 4 519 #if __GNUC__
458# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
459# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
460#else 536#else
461# define expect(expr,value) (expr) 537 #include <inttypes.h>
462# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
464# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
465# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
466#endif 557 #endif
558#endif
467 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573# define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
627 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
628 #elif _MSC_VER >= 1400 /* VC++ 2005 */
629 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
630 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
631 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
632 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
633 #elif defined _WIN32
634 #include <WinNT.h>
635 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
636 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
637 #include <mbarrier.h>
638 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
639 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
640 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
641 #elif __xlC__
642 #define ECB_MEMORY_FENCE __sync ()
643 #endif
644#endif
645
646#ifndef ECB_MEMORY_FENCE
647 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
648 /* we assume that these memory fences work on all variables/all memory accesses, */
649 /* not just C11 atomics and atomic accesses */
650 #include <stdatomic.h>
651 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
652 /* simple barrier semantics. That means we need to take out thor's hammer. */
653 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
654 #endif
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? */
… …
505 1048
506#ifndef EV_FD_TO_WIN32_HANDLE 1049#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 1050# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 1051#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 1052#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 1053# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 1054#endif
512#ifndef EV_WIN32_CLOSE_FD 1055#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 1056# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 1057#endif
515 1058
… …
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{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
548 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 1200 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
551 */ 1202 */
552 1203
553 if (size) 1204 if (size)
554 return realloc (ptr, size); 1205 return realloc (ptr, size);
555 1206
556 free (ptr); 1207 free (ptr);
557 return 0; 1208 return 0;
1209#endif
558} 1210}
559 1211
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
561 1213
562void 1214void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
564{ 1216{
565 alloc = cb; 1217 alloc = cb;
566} 1218}
567 1219
568inline_speed void * 1220inline_speed void *
… …
570{ 1222{
571 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
572 1224
573 if (!ptr && size) 1225 if (!ptr && size)
574 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
576 abort (); 1232 abort ();
577 } 1233 }
578 1234
579 return ptr; 1235 return ptr;
580} 1236}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 1253 unsigned char unused;
598#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 1256#endif
601#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 1258 SOCKET handle;
1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
603#endif 1262#endif
604} ANFD; 1263} ANFD;
605 1264
606/* stores the pending event set for a given watcher */ 1265/* stores the pending event set for a given watcher */
607typedef struct 1266typedef struct
… …
649 #undef VAR 1308 #undef VAR
650 }; 1309 };
651 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
652 1311
653 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
654 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
655 1314
656#else 1315#else
657 1316
658 ev_tstamp ev_rt_now; 1317 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
659 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
660 #include "ev_vars.h" 1319 #include "ev_vars.h"
661 #undef VAR 1320 #undef VAR
662 1321
663 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
664 1323
665#endif 1324#endif
666 1325
667#if EV_MINIMAL < 2 1326#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1327# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 1330#else
672# define EV_RELEASE_CB (void)0 1331# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 1332# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 1334#endif
676 1335
677#define EVUNLOOP_RECURSE 0x80 1336#define EVBREAK_RECURSE 0x80
678 1337
679/*****************************************************************************/ 1338/*****************************************************************************/
680 1339
681#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
682ev_tstamp 1341ev_tstamp
683ev_time (void) 1342ev_time (void) EV_THROW
684{ 1343{
685#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
686 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
687 { 1346 {
688 struct timespec ts; 1347 struct timespec ts;
… …
712 return ev_time (); 1371 return ev_time ();
713} 1372}
714 1373
715#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
716ev_tstamp 1375ev_tstamp
717ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
718{ 1377{
719 return ev_rt_now; 1378 return ev_rt_now;
720} 1379}
721#endif 1380#endif
722 1381
723void 1382void
724ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
725{ 1384{
726 if (delay > 0.) 1385 if (delay > 0.)
727 { 1386 {
728#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
729 struct timespec ts; 1388 struct timespec ts;
730 1389
731 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
735#elif defined(_WIN32) 1392#elif defined _WIN32
736 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
737#else 1394#else
738 struct timeval tv; 1395 struct timeval tv;
739 1396
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 */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
747#endif 1402#endif
748 } 1403 }
749} 1404}
750 1405
751/*****************************************************************************/ 1406/*****************************************************************************/
752 1407
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 1409
755/* find a suitable new size for the given array, */ 1410/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 1411/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 1412inline_size int
758array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
759{ 1414{
760 int ncur = cur + 1; 1415 int ncur = cur + 1;
761 1416
762 do 1417 do
763 ncur <<= 1; 1418 ncur <<= 1;
764 while (cnt > ncur); 1419 while (cnt > ncur);
765 1420
766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
768 { 1423 {
769 ncur *= elem; 1424 ncur *= elem;
770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
771 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
773 } 1428 }
774 1429
775 return ncur; 1430 return ncur;
776} 1431}
777 1432
778static noinline void * 1433static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
780{ 1435{
781 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
783} 1438}
… …
786 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
787 1442
788#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
789 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
790 { \ 1445 { \
791 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
792 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
793 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
794 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
795 } 1450 }
796 1451
… …
814pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
815{ 1470{
816} 1471}
817 1472
818void noinline 1473void noinline
819ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
820{ 1475{
821 W w_ = (W)w; 1476 W w_ = (W)w;
822 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
823 1478
824 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
828 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
829 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
830 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
831 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
832 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
833} 1490}
834 1491
835inline_speed void 1492inline_speed void
836feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
837{ 1494{
… …
857} 1514}
858 1515
859/*****************************************************************************/ 1516/*****************************************************************************/
860 1517
861inline_speed void 1518inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1520{
864 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
865 ev_io *w; 1522 ev_io *w;
866 1523
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1524 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1536fd_event (EV_P_ int fd, int revents)
880{ 1537{
881 ANFD *anfd = anfds + fd; 1538 ANFD *anfd = anfds + fd;
882 1539
883 if (expect_true (!anfd->reify)) 1540 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1541 fd_event_nocheck (EV_A_ fd, revents);
885} 1542}
886 1543
887void 1544void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
889{ 1546{
890 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
892} 1549}
893 1550
894/* make sure the external fd watch events are in-sync */ 1551/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1552/* with the kernel/libev internal state */
896inline_size void 1553inline_size void
897fd_reify (EV_P) 1554fd_reify (EV_P)
898{ 1555{
899 int i; 1556 int i;
900 1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
1582
901 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
902 { 1584 {
903 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
905 ev_io *w; 1587 ev_io *w;
906 1588
907 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
908 1591
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1593
912#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1595 {
915 unsigned long arg; 1596 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1597
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1599 anfd->events |= (unsigned char)w->events;
1600
1601 if (o_events != anfd->events)
1602 o_reify = EV__IOFDSET; /* actually |= */
918 } 1603 }
919#endif
920 1604
921 { 1605 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); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1607 }
932 1608
933 fdchangecnt = 0; 1609 fdchangecnt = 0;
934} 1610}
935 1611
… …
947 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
948 } 1624 }
949} 1625}
950 1626
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1628inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
954{ 1630{
955 ev_io *w; 1631 ev_io *w;
956 1632
957 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1637 }
962} 1638}
963 1639
964/* check whether the given fd is atcually valid, for error recovery */ 1640/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1641inline_size int ecb_cold
966fd_valid (int fd) 1642fd_valid (int fd)
967{ 1643{
968#ifdef _WIN32 1644#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1646#else
971 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
972#endif 1648#endif
973} 1649}
974 1650
975/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
976static void noinline 1652static void noinline ecb_cold
977fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
978{ 1654{
979 int fd; 1655 int fd;
980 1656
981 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
985} 1661}
986 1662
987/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 1664static void noinline ecb_cold
989fd_enomem (EV_P) 1665fd_enomem (EV_P)
990{ 1666{
991 int fd; 1667 int fd;
992 1668
993 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 1689 }
1014} 1690}
1015 1691
1692/* used to prepare libev internal fd's */
1693/* this is not fork-safe */
1694inline_speed void
1695fd_intern (int fd)
1696{
1697#ifdef _WIN32
1698 unsigned long arg = 1;
1699 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1700#else
1701 fcntl (fd, F_SETFD, FD_CLOEXEC);
1702 fcntl (fd, F_SETFL, O_NONBLOCK);
1703#endif
1704}
1705
1016/*****************************************************************************/ 1706/*****************************************************************************/
1017 1707
1018/* 1708/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
1022 */ 1712 */
1023 1713
1024/* 1714/*
… …
1172 1862
1173static ANSIG signals [EV_NSIG - 1]; 1863static ANSIG signals [EV_NSIG - 1];
1174 1864
1175/*****************************************************************************/ 1865/*****************************************************************************/
1176 1866
1177/* used to prepare libev internal fd's */ 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */
1179inline_speed void
1180fd_intern (int fd)
1181{
1182#ifdef _WIN32
1183 unsigned long arg = 1;
1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 1868
1191static void noinline 1869static void noinline ecb_cold
1192evpipe_init (EV_P) 1870evpipe_init (EV_P)
1193{ 1871{
1194 if (!ev_is_active (&pipe_w)) 1872 if (!ev_is_active (&pipe_w))
1195 { 1873 {
1196#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL) 1876 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0); 1877 evfd = eventfd (0, 0);
1200 1878
1201 if (evfd >= 0) 1879 if (evfd >= 0)
… …
1203 evpipe [0] = -1; 1881 evpipe [0] = -1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1205 ev_io_set (&pipe_w, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 1884 }
1207 else 1885 else
1208#endif 1886# endif
1209 { 1887 {
1210 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1211 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1212 1890
1213 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
… …
1218 ev_io_start (EV_A_ &pipe_w); 1896 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 } 1898 }
1221} 1899}
1222 1900
1223inline_size void 1901inline_speed void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{ 1903{
1226 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1227 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1228 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1229
1230 *flag = 1;
1231 1924
1232#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1233 if (evfd >= 0) 1926 if (evfd >= 0)
1234 { 1927 {
1235 uint64_t counter = 1; 1928 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1237 } 1930 }
1238 else 1931 else
1239#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1240 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1241 1944
1242 errno = old_errno; 1945 errno = old_errno;
1243 } 1946 }
1244} 1947}
1245 1948
… …
1248static void 1951static void
1249pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1250{ 1953{
1251 int i; 1954 int i;
1252 1955
1956 if (revents & EV_READ)
1957 {
1253#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1254 if (evfd >= 0) 1959 if (evfd >= 0)
1255 { 1960 {
1256 uint64_t counter; 1961 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1258 } 1963 }
1259 else 1964 else
1260#endif 1965#endif
1261 { 1966 {
1262 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1263 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1264 } 1979 }
1265 1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 1986 if (sig_pending)
1267 { 1987 {
1268 sig_pending = 0; 1988 sig_pending = 0;
1989
1990 ECB_MEMORY_FENCE;
1269 1991
1270 for (i = EV_NSIG - 1; i--; ) 1992 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 1993 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1273 } 1995 }
1996#endif
1274 1997
1275#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1276 if (async_pending) 1999 if (async_pending)
1277 { 2000 {
1278 async_pending = 0; 2001 async_pending = 0;
2002
2003 ECB_MEMORY_FENCE;
1279 2004
1280 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1281 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1282 { 2007 {
1283 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1284 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1285 } 2011 }
1286 } 2012 }
1287#endif 2013#endif
1288} 2014}
1289 2015
1290/*****************************************************************************/ 2016/*****************************************************************************/
1291 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1292static void 2035static void
1293ev_sighandler (int signum) 2036ev_sighandler (int signum)
1294{ 2037{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#if _WIN32 2038#ifdef _WIN32
1300 signal (signum, ev_sighandler); 2039 signal (signum, ev_sighandler);
1301#endif 2040#endif
1302 2041
1303 signals [signum - 1].pending = 1; 2042 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 2043}
1306 2044
1307void noinline 2045void noinline
1308ev_feed_signal_event (EV_P_ int signum) 2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
1309{ 2047{
1310 WL w; 2048 WL w;
1311 2049
1312 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
1313 return; 2051 return;
… …
1321 if (expect_false (signals [signum].loop != EV_A)) 2059 if (expect_false (signals [signum].loop != EV_A))
1322 return; 2060 return;
1323#endif 2061#endif
1324 2062
1325 signals [signum].pending = 0; 2063 signals [signum].pending = 0;
2064 MEMORY_FENCE_RELEASE;
1326 2065
1327 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1329} 2068}
1330 2069
… …
1346 break; 2085 break;
1347 } 2086 }
1348} 2087}
1349#endif 2088#endif
1350 2089
2090#endif
2091
1351/*****************************************************************************/ 2092/*****************************************************************************/
1352 2093
2094#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 2096
1357static ev_signal childev; 2097static ev_signal childev;
1358 2098
1359#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1366{ 2106{
1367 ev_child *w; 2107 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 2109
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 2111 {
1372 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1374 { 2114 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 2140 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 2141 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 2143
1404 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 2147}
1408 2148
1409#endif 2149#endif
1410 2150
1411/*****************************************************************************/ 2151/*****************************************************************************/
1412 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1413#if EV_USE_PORT 2156#if EV_USE_PORT
1414# include "ev_port.c" 2157# include "ev_port.c"
1415#endif 2158#endif
1416#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1424#endif 2167#endif
1425#if EV_USE_SELECT 2168#if EV_USE_SELECT
1426# include "ev_select.c" 2169# include "ev_select.c"
1427#endif 2170#endif
1428 2171
1429int 2172int ecb_cold
1430ev_version_major (void) 2173ev_version_major (void) EV_THROW
1431{ 2174{
1432 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1433} 2176}
1434 2177
1435int 2178int ecb_cold
1436ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1437{ 2180{
1438 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1439} 2182}
1440 2183
1441/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 2185int inline_size ecb_cold
1443enable_secure (void) 2186enable_secure (void)
1444{ 2187{
1445#ifdef _WIN32 2188#ifdef _WIN32
1446 return 0; 2189 return 0;
1447#else 2190#else
1448 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1449 || getgid () != getegid (); 2192 || getgid () != getegid ();
1450#endif 2193#endif
1451} 2194}
1452 2195
1453unsigned int 2196unsigned int ecb_cold
1454ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1455{ 2198{
1456 unsigned int flags = 0; 2199 unsigned int flags = 0;
1457 2200
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1459 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 2206
1464 return flags; 2207 return flags;
1465} 2208}
1466 2209
1467unsigned int 2210unsigned int ecb_cold
1468ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1469{ 2212{
1470 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1471 2214
1472#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1473 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1477#ifdef __APPLE__ 2220#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 2221 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif
1482 2228
1483 return flags; 2229 return flags;
1484} 2230}
1485 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1486unsigned int 2244unsigned int
1487ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1488{ 2246{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 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} 2248}
1497 2249
2250#if EV_FEATURE_API
1498unsigned int 2251unsigned int
1499ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1500{ 2253{
1501 return backend; 2254 return loop_count;
1502} 2255}
1503 2256
1504#if EV_MINIMAL < 2
1505unsigned int 2257unsigned int
1506ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1507{
1508 return loop_count;
1509}
1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{ 2259{
1514 return loop_depth; 2260 return loop_depth;
1515} 2261}
1516 2262
1517void 2263void
1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1519{ 2265{
1520 io_blocktime = interval; 2266 io_blocktime = interval;
1521} 2267}
1522 2268
1523void 2269void
1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1525{ 2271{
1526 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1527} 2273}
1528 2274
1529void 2275void
1530ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1531{ 2277{
1532 userdata = data; 2278 userdata = data;
1533} 2279}
1534 2280
1535void * 2281void *
1536ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1537{ 2283{
1538 return userdata; 2284 return userdata;
1539} 2285}
1540 2286
2287void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1542{ 2289{
1543 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1544} 2291}
1545 2292
2293void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1547{ 2295{
1548 release_cb = release; 2296 release_cb = release;
1549 acquire_cb = acquire; 2297 acquire_cb = acquire;
1550} 2298}
1551#endif 2299#endif
1552 2300
1553/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1554static void noinline 2302static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1556{ 2304{
1557 if (!backend) 2305 if (!backend)
1558 { 2306 {
2307 origflags = flags;
2308
1559#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1560 if (!have_realtime) 2310 if (!have_realtime)
1561 { 2311 {
1562 struct timespec ts; 2312 struct timespec ts;
1563 2313
… …
1585 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 2336 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 2339
1590 ev_rt_now = ev_time (); 2340 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 2341 mn_now = get_clock ();
1592 now_floor = mn_now; 2342 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 2343 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 2344#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 2345 invoke_cb = ev_invoke_pending;
1596#endif 2346#endif
1597 2347
1598 io_blocktime = 0.; 2348 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 2349 timeout_blocktime = 0.;
1600 backend = 0; 2350 backend = 0;
1601 backend_fd = -1; 2351 backend_fd = -1;
1602 sig_pending = 0; 2352 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 2353#if EV_ASYNC_ENABLE
1604 async_pending = 0; 2354 async_pending = 0;
1605#endif 2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
1606#if EV_USE_INOTIFY 2358#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 2360#endif
1609#if EV_USE_SIGNALFD 2361#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 2363#endif
1612 2364
1613 if (!(flags & 0x0000ffffU)) 2365 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1615 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1616#if EV_USE_PORT 2371#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 2373#endif
1619#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 2385#endif
1631 2386
1632 ev_prepare_init (&pending_w, pendingcb); 2387 ev_prepare_init (&pending_w, pendingcb);
1633 2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 2390 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1636 } 2393 }
1637} 2394}
1638 2395
1639/* free up a loop structure */ 2396/* free up a loop structure */
1640static void noinline 2397void ecb_cold
1641loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1642{ 2399{
1643 int i; 2400 int i;
2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
1644 2424
1645 if (ev_is_active (&pipe_w)) 2425 if (ev_is_active (&pipe_w))
1646 { 2426 {
1647 /*ev_ref (EV_A);*/ 2427 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1670#endif 2450#endif
1671 2451
1672 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1673 close (backend_fd); 2453 close (backend_fd);
1674 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1675#if EV_USE_PORT 2458#if EV_USE_PORT
1676 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1677#endif 2460#endif
1678#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1679 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1706 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1707#endif 2490#endif
1708#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1709 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1710#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1711 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1712 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1713#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1714 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1715#endif 2501#endif
1716 2502
1717 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1718} 2513}
1719 2514
1720#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1721inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1722#endif 2517#endif
… …
1737 infy_fork (EV_A); 2532 infy_fork (EV_A);
1738#endif 2533#endif
1739 2534
1740 if (ev_is_active (&pipe_w)) 2535 if (ev_is_active (&pipe_w))
1741 { 2536 {
1742 /* this "locks" the handlers against writing to the pipe */ 2537 /* 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 2538
1749 ev_ref (EV_A); 2539 ev_ref (EV_A);
1750 ev_io_stop (EV_A_ &pipe_w); 2540 ev_io_stop (EV_A_ &pipe_w);
1751 2541
1752#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
… …
1758 { 2548 {
1759 EV_WIN32_CLOSE_FD (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1760 EV_WIN32_CLOSE_FD (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1761 } 2551 }
1762 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1763 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1764 /* now iterate over everything, in case we missed something */ 2555 /* now iterate over everything, in case we missed something */
1765 pipecb (EV_A_ &pipe_w, EV_READ); 2556 pipecb (EV_A_ &pipe_w, EV_READ);
2557#endif
1766 } 2558 }
1767 2559
1768 postfork = 0; 2560 postfork = 0;
1769} 2561}
1770 2562
1771#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1772 2564
1773struct ev_loop * 2565struct ev_loop * ecb_cold
1774ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1775{ 2567{
1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1777 2569
1778 memset (EV_A, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1779 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1780 2572
1781 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1782 return EV_A; 2574 return EV_A;
1783 2575
2576 ev_free (EV_A);
1784 return 0; 2577 return 0;
1785} 2578}
1786 2579
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 */ 2580#endif /* multiplicity */
1800 2581
1801#if EV_VERIFY 2582#if EV_VERIFY
1802static void noinline 2583static void noinline ecb_cold
1803verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1804{ 2585{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806 2587
1807 if (w->pending) 2588 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809} 2590}
1810 2591
1811static void noinline 2592static void noinline ecb_cold
1812verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1813{ 2594{
1814 int i; 2595 int i;
1815 2596
1816 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1821 2602
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 } 2604 }
1824} 2605}
1825 2606
1826static void noinline 2607static void noinline ecb_cold
1827array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1828{ 2609{
1829 while (cnt--) 2610 while (cnt--)
1830 { 2611 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1833 } 2614 }
1834} 2615}
1835#endif 2616#endif
1836 2617
1837#if EV_MINIMAL < 2 2618#if EV_FEATURE_API
1838void 2619void ecb_cold
1839ev_loop_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
1840{ 2621{
1841#if EV_VERIFY 2622#if EV_VERIFY
1842 int i; 2623 int i;
1843 WL w; 2624 WL w, w2;
1844 2625
1845 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1846 2627
1847 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850 2631
1851 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1853 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1854 { 2638 {
1855 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 } 2649 }
2650 }
1859 2651
1860 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1862 2654
1863#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1878#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif 2673#endif
1882 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1883#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif 2683#endif
1887 2684
2685#if EV_PREPARE_ENABLE
1888 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1890 2689
2690#if EV_CHECK_ENABLE
1891 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1893 2694
1894# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1897# endif 2700# endif
1898#endif 2701#endif
1899} 2702}
1900#endif 2703#endif
1901 2704
1902#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1903struct ev_loop * 2706struct ev_loop * ecb_cold
1904ev_default_loop_init (unsigned int flags)
1905#else 2707#else
1906int 2708int
2709#endif
1907ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1908#endif
1909{ 2711{
1910 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1911 { 2713 {
1912#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1913 EV_P = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1917 2719
1918 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1919 2721
1920 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1921 { 2723 {
1922#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1923 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1924 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1925 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1926 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1927#endif 2729#endif
… …
1932 2734
1933 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1934} 2736}
1935 2737
1936void 2738void
1937ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1938{ 2740{
1939#if EV_MULTIPLICITY
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 */ 2741 postfork = 1; /* must be in line with ev_default_fork */
1961} 2742}
1962 2743
1963/*****************************************************************************/ 2744/*****************************************************************************/
1964 2745
1965void 2746void
… …
1967{ 2748{
1968 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1969} 2750}
1970 2751
1971unsigned int 2752unsigned int
1972ev_pending_count (EV_P) 2753ev_pending_count (EV_P) EV_THROW
1973{ 2754{
1974 int pri; 2755 int pri;
1975 unsigned int count = 0; 2756 unsigned int count = 0;
1976 2757
1977 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
… …
1981} 2762}
1982 2763
1983void noinline 2764void noinline
1984ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
1985{ 2766{
1986 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1987
1988 for (pri = NUMPRI; pri--; )
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
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 2771
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 }
… …
2056 EV_FREQUENT_CHECK; 2832 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w); 2833 feed_reverse (EV_A_ (W)w);
2058 } 2834 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060 2836
2061 feed_reverse_done (EV_A_ EV_TIMEOUT); 2837 feed_reverse_done (EV_A_ EV_TIMER);
2062 } 2838 }
2063} 2839}
2064 2840
2065#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
2066/* make periodics pending */ 2867/* make periodics pending */
2067inline_size void 2868inline_size void
2068periodics_reify (EV_P) 2869periodics_reify (EV_P)
2069{ 2870{
2070 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2071 2872
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 { 2874 {
2074 int feed_count = 0;
2075
2076 do 2875 do
2077 { 2876 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079 2878
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2089 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
2091 } 2890 }
2092 else if (w->interval) 2891 else if (w->interval)
2093 { 2892 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2893 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]); 2894 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
2110 } 2896 }
2111 else 2897 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2119 feed_reverse_done (EV_A_ EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 } 2906 }
2121} 2907}
2122 2908
2123/* simply recalculate all periodics */ 2909/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2125static void noinline 2911static void noinline ecb_cold
2126periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
2127{ 2913{
2128 int i; 2914 int i;
2129 2915
2130 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134 2920
2135 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval) 2923 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
2139 2925
2140 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
2141 } 2927 }
2142 2928
2143 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
2144} 2930}
2145#endif 2931#endif
2146 2932
2147/* adjust all timers by a given offset */ 2933/* adjust all timers by a given offset */
2148static void noinline 2934static void noinline ecb_cold
2149timers_reschedule (EV_P_ ev_tstamp adjust) 2935timers_reschedule (EV_P_ ev_tstamp adjust)
2150{ 2936{
2151 int i; 2937 int i;
2152 2938
2153 for (i = 0; i < timercnt; ++i) 2939 for (i = 0; i < timercnt; ++i)
… …
2157 ANHE_at_cache (*he); 2943 ANHE_at_cache (*he);
2158 } 2944 }
2159} 2945}
2160 2946
2161/* fetch new monotonic and realtime times from the kernel */ 2947/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */ 2948/* also detect if there was a timejump, and act accordingly */
2163inline_speed void 2949inline_speed void
2164time_update (EV_P_ ev_tstamp max_block) 2950time_update (EV_P_ ev_tstamp max_block)
2165{ 2951{
2166#if EV_USE_MONOTONIC 2952#if EV_USE_MONOTONIC
2167 if (expect_true (have_monotonic)) 2953 if (expect_true (have_monotonic))
… …
2190 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
2191 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
2192 */ 2978 */
2193 for (i = 4; --i; ) 2979 for (i = 4; --i; )
2194 { 2980 {
2981 ev_tstamp diff;
2195 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
2196 2983
2984 diff = odiff - rtmn_diff;
2985
2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2198 return; /* all is well */ 2987 return; /* all is well */
2199 2988
2200 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
2201 mn_now = get_clock (); 2990 mn_now = get_clock ();
2202 now_floor = mn_now; 2991 now_floor = mn_now;
… …
2224 3013
2225 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2226 } 3015 }
2227} 3016}
2228 3017
2229void 3018int
2230ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2231{ 3020{
2232#if EV_MINIMAL < 2 3021#if EV_FEATURE_API
2233 ++loop_depth; 3022 ++loop_depth;
2234#endif 3023#endif
2235 3024
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2237 3026
2238 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
2239 3028
2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2241 3030
2242 do 3031 do
2243 { 3032 {
2244#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
2246#endif 3035#endif
2247 3036
2248#ifndef _WIN32 3037#ifndef _WIN32
2249 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
2250 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2263 EV_INVOKE_PENDING; 3052 EV_INVOKE_PENDING;
2264 } 3053 }
2265#endif 3054#endif
2266 3055
3056#if EV_PREPARE_ENABLE
2267 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
2268 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
2269 { 3059 {
2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2271 EV_INVOKE_PENDING; 3061 EV_INVOKE_PENDING;
2272 } 3062 }
3063#endif
2273 3064
2274 if (expect_false (loop_done)) 3065 if (expect_false (loop_done))
2275 break; 3066 break;
2276 3067
2277 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
… …
2284 /* calculate blocking time */ 3075 /* calculate blocking time */
2285 { 3076 {
2286 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
2287 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
2288 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2290 { 3092 {
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; 3093 waittime = MAX_BLOCKTIME;
2298 3094
2299 if (timercnt) 3095 if (timercnt)
2300 { 3096 {
2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2302 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
2303 } 3099 }
2304 3100
2305#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
2306 if (periodiccnt) 3102 if (periodiccnt)
2307 { 3103 {
2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2309 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2310 } 3106 }
2311#endif 3107#endif
2312 3108
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2314 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2315 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
3112
3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
2316 3117
2317 /* extra check because io_blocktime is commonly 0 */ 3118 /* extra check because io_blocktime is commonly 0 */
2318 if (expect_false (io_blocktime)) 3119 if (expect_false (io_blocktime))
2319 { 3120 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321 3122
2322 if (sleeptime > waittime - backend_fudge) 3123 if (sleeptime > waittime - backend_mintime)
2323 sleeptime = waittime - backend_fudge; 3124 sleeptime = waittime - backend_mintime;
2324 3125
2325 if (expect_true (sleeptime > 0.)) 3126 if (expect_true (sleeptime > 0.))
2326 { 3127 {
2327 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2328 waittime -= sleeptime; 3129 waittime -= sleeptime;
2329 } 3130 }
2330 } 3131 }
2331 } 3132 }
2332 3133
2333#if EV_MINIMAL < 2 3134#if EV_FEATURE_API
2334 ++loop_count; 3135 ++loop_count;
2335#endif 3136#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2337 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 if (pipe_write_skipped)
3144 {
3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3146 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3147 }
3148
2339 3149
2340 /* update ev_rt_now, do magic */ 3150 /* update ev_rt_now, do magic */
2341 time_update (EV_A_ waittime + sleeptime); 3151 time_update (EV_A_ waittime + sleeptime);
2342 } 3152 }
2343 3153
… …
2350#if EV_IDLE_ENABLE 3160#if EV_IDLE_ENABLE
2351 /* queue idle watchers unless other events are pending */ 3161 /* queue idle watchers unless other events are pending */
2352 idle_reify (EV_A); 3162 idle_reify (EV_A);
2353#endif 3163#endif
2354 3164
3165#if EV_CHECK_ENABLE
2355 /* queue check watchers, to be executed first */ 3166 /* queue check watchers, to be executed first */
2356 if (expect_false (checkcnt)) 3167 if (expect_false (checkcnt))
2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3168 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3169#endif
2358 3170
2359 EV_INVOKE_PENDING; 3171 EV_INVOKE_PENDING;
2360 } 3172 }
2361 while (expect_true ( 3173 while (expect_true (
2362 activecnt 3174 activecnt
2363 && !loop_done 3175 && !loop_done
2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3176 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2365 )); 3177 ));
2366 3178
2367 if (loop_done == EVUNLOOP_ONE) 3179 if (loop_done == EVBREAK_ONE)
2368 loop_done = EVUNLOOP_CANCEL; 3180 loop_done = EVBREAK_CANCEL;
2369 3181
2370#if EV_MINIMAL < 2 3182#if EV_FEATURE_API
2371 --loop_depth; 3183 --loop_depth;
2372#endif 3184#endif
3185
3186 return activecnt;
2373} 3187}
2374 3188
2375void 3189void
2376ev_unloop (EV_P_ int how) 3190ev_break (EV_P_ int how) EV_THROW
2377{ 3191{
2378 loop_done = how; 3192 loop_done = how;
2379} 3193}
2380 3194
2381void 3195void
2382ev_ref (EV_P) 3196ev_ref (EV_P) EV_THROW
2383{ 3197{
2384 ++activecnt; 3198 ++activecnt;
2385} 3199}
2386 3200
2387void 3201void
2388ev_unref (EV_P) 3202ev_unref (EV_P) EV_THROW
2389{ 3203{
2390 --activecnt; 3204 --activecnt;
2391} 3205}
2392 3206
2393void 3207void
2394ev_now_update (EV_P) 3208ev_now_update (EV_P) EV_THROW
2395{ 3209{
2396 time_update (EV_A_ 1e100); 3210 time_update (EV_A_ 1e100);
2397} 3211}
2398 3212
2399void 3213void
2400ev_suspend (EV_P) 3214ev_suspend (EV_P) EV_THROW
2401{ 3215{
2402 ev_now_update (EV_A); 3216 ev_now_update (EV_A);
2403} 3217}
2404 3218
2405void 3219void
2406ev_resume (EV_P) 3220ev_resume (EV_P) EV_THROW
2407{ 3221{
2408 ev_tstamp mn_prev = mn_now; 3222 ev_tstamp mn_prev = mn_now;
2409 3223
2410 ev_now_update (EV_A); 3224 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev); 3225 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2450 w->pending = 0; 3264 w->pending = 0;
2451 } 3265 }
2452} 3266}
2453 3267
2454int 3268int
2455ev_clear_pending (EV_P_ void *w) 3269ev_clear_pending (EV_P_ void *w) EV_THROW
2456{ 3270{
2457 W w_ = (W)w; 3271 W w_ = (W)w;
2458 int pending = w_->pending; 3272 int pending = w_->pending;
2459 3273
2460 if (expect_true (pending)) 3274 if (expect_true (pending))
… …
2493} 3307}
2494 3308
2495/*****************************************************************************/ 3309/*****************************************************************************/
2496 3310
2497void noinline 3311void noinline
2498ev_io_start (EV_P_ ev_io *w) 3312ev_io_start (EV_P_ ev_io *w) EV_THROW
2499{ 3313{
2500 int fd = w->fd; 3314 int fd = w->fd;
2501 3315
2502 if (expect_false (ev_is_active (w))) 3316 if (expect_false (ev_is_active (w)))
2503 return; 3317 return;
2504 3318
2505 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3319 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)))); 3320 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507 3321
2508 EV_FREQUENT_CHECK; 3322 EV_FREQUENT_CHECK;
2509 3323
2510 ev_start (EV_A_ (W)w, 1); 3324 ev_start (EV_A_ (W)w, 1);
2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2512 wlist_add (&anfds[fd].head, (WL)w); 3326 wlist_add (&anfds[fd].head, (WL)w);
2513 3327
3328 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330
2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3331 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2515 w->events &= ~EV__IOFDSET; 3332 w->events &= ~EV__IOFDSET;
2516 3333
2517 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2518} 3335}
2519 3336
2520void noinline 3337void noinline
2521ev_io_stop (EV_P_ ev_io *w) 3338ev_io_stop (EV_P_ ev_io *w) EV_THROW
2522{ 3339{
2523 clear_pending (EV_A_ (W)w); 3340 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3341 if (expect_false (!ev_is_active (w)))
2525 return; 3342 return;
2526 3343
… …
2529 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2530 3347
2531 wlist_del (&anfds[w->fd].head, (WL)w); 3348 wlist_del (&anfds[w->fd].head, (WL)w);
2532 ev_stop (EV_A_ (W)w); 3349 ev_stop (EV_A_ (W)w);
2533 3350
2534 fd_change (EV_A_ w->fd, 1); 3351 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2535 3352
2536 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
2537} 3354}
2538 3355
2539void noinline 3356void noinline
2540ev_timer_start (EV_P_ ev_timer *w) 3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2541{ 3358{
2542 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
2543 return; 3360 return;
2544 3361
2545 ev_at (w) += mn_now; 3362 ev_at (w) += mn_now;
… …
2559 3376
2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2561} 3378}
2562 3379
2563void noinline 3380void noinline
2564ev_timer_stop (EV_P_ ev_timer *w) 3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2565{ 3382{
2566 clear_pending (EV_A_ (W)w); 3383 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3384 if (expect_false (!ev_is_active (w)))
2568 return; 3385 return;
2569 3386
… …
2581 timers [active] = timers [timercnt + HEAP0]; 3398 timers [active] = timers [timercnt + HEAP0];
2582 adjustheap (timers, timercnt, active); 3399 adjustheap (timers, timercnt, active);
2583 } 3400 }
2584 } 3401 }
2585 3402
2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now; 3403 ev_at (w) -= mn_now;
2589 3404
2590 ev_stop (EV_A_ (W)w); 3405 ev_stop (EV_A_ (W)w);
3406
3407 EV_FREQUENT_CHECK;
2591} 3408}
2592 3409
2593void noinline 3410void noinline
2594ev_timer_again (EV_P_ ev_timer *w) 3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2595{ 3412{
2596 EV_FREQUENT_CHECK; 3413 EV_FREQUENT_CHECK;
3414
3415 clear_pending (EV_A_ (W)w);
2597 3416
2598 if (ev_is_active (w)) 3417 if (ev_is_active (w))
2599 { 3418 {
2600 if (w->repeat) 3419 if (w->repeat)
2601 { 3420 {
… …
2614 3433
2615 EV_FREQUENT_CHECK; 3434 EV_FREQUENT_CHECK;
2616} 3435}
2617 3436
2618ev_tstamp 3437ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w) 3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2620{ 3439{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2622} 3441}
2623 3442
2624#if EV_PERIODIC_ENABLE 3443#if EV_PERIODIC_ENABLE
2625void noinline 3444void noinline
2626ev_periodic_start (EV_P_ ev_periodic *w) 3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2627{ 3446{
2628 if (expect_false (ev_is_active (w))) 3447 if (expect_false (ev_is_active (w)))
2629 return; 3448 return;
2630 3449
2631 if (w->reschedule_cb) 3450 if (w->reschedule_cb)
2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3451 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2633 else if (w->interval) 3452 else if (w->interval)
2634 { 3453 {
2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3454 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 */ 3455 periodic_recalc (EV_A_ w);
2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2638 } 3456 }
2639 else 3457 else
2640 ev_at (w) = w->offset; 3458 ev_at (w) = w->offset;
2641 3459
2642 EV_FREQUENT_CHECK; 3460 EV_FREQUENT_CHECK;
… …
2652 3470
2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2654} 3472}
2655 3473
2656void noinline 3474void noinline
2657ev_periodic_stop (EV_P_ ev_periodic *w) 3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2658{ 3476{
2659 clear_pending (EV_A_ (W)w); 3477 clear_pending (EV_A_ (W)w);
2660 if (expect_false (!ev_is_active (w))) 3478 if (expect_false (!ev_is_active (w)))
2661 return; 3479 return;
2662 3480
… …
2674 periodics [active] = periodics [periodiccnt + HEAP0]; 3492 periodics [active] = periodics [periodiccnt + HEAP0];
2675 adjustheap (periodics, periodiccnt, active); 3493 adjustheap (periodics, periodiccnt, active);
2676 } 3494 }
2677 } 3495 }
2678 3496
2679 EV_FREQUENT_CHECK;
2680
2681 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
3498
3499 EV_FREQUENT_CHECK;
2682} 3500}
2683 3501
2684void noinline 3502void noinline
2685ev_periodic_again (EV_P_ ev_periodic *w) 3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2686{ 3504{
2687 /* TODO: use adjustheap and recalculation */ 3505 /* TODO: use adjustheap and recalculation */
2688 ev_periodic_stop (EV_A_ w); 3506 ev_periodic_stop (EV_A_ w);
2689 ev_periodic_start (EV_A_ w); 3507 ev_periodic_start (EV_A_ w);
2690} 3508}
… …
2692 3510
2693#ifndef SA_RESTART 3511#ifndef SA_RESTART
2694# define SA_RESTART 0 3512# define SA_RESTART 0
2695#endif 3513#endif
2696 3514
3515#if EV_SIGNAL_ENABLE
3516
2697void noinline 3517void noinline
2698ev_signal_start (EV_P_ ev_signal *w) 3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2699{ 3519{
2700 if (expect_false (ev_is_active (w))) 3520 if (expect_false (ev_is_active (w)))
2701 return; 3521 return;
2702 3522
2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2747 if (!((WL)w)->next) 3567 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD 3568# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/ 3569 if (sigfd < 0) /*TODO*/
2750# endif 3570# endif
2751 { 3571 {
2752# if _WIN32 3572# ifdef _WIN32
2753 evpipe_init (EV_A); 3573 evpipe_init (EV_A);
2754 3574
2755 signal (w->signum, ev_sighandler); 3575 signal (w->signum, ev_sighandler);
2756# else 3576# else
2757 struct sigaction sa; 3577 struct sigaction sa;
… …
2761 sa.sa_handler = ev_sighandler; 3581 sa.sa_handler = ev_sighandler;
2762 sigfillset (&sa.sa_mask); 3582 sigfillset (&sa.sa_mask);
2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3583 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2764 sigaction (w->signum, &sa, 0); 3584 sigaction (w->signum, &sa, 0);
2765 3585
3586 if (origflags & EVFLAG_NOSIGMASK)
3587 {
2766 sigemptyset (&sa.sa_mask); 3588 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum); 3589 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3590 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3591 }
2769#endif 3592#endif
2770 } 3593 }
2771 3594
2772 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2773} 3596}
2774 3597
2775void noinline 3598void noinline
2776ev_signal_stop (EV_P_ ev_signal *w) 3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2777{ 3600{
2778 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
2779 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
2780 return; 3603 return;
2781 3604
… …
2790 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3613 signals [w->signum - 1].loop = 0; /* unattach from signal */
2791#endif 3614#endif
2792#if EV_USE_SIGNALFD 3615#if EV_USE_SIGNALFD
2793 if (sigfd >= 0) 3616 if (sigfd >= 0)
2794 { 3617 {
2795 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3618 sigset_t ss;
3619
3620 sigemptyset (&ss);
3621 sigaddset (&ss, w->signum);
2796 sigdelset (&sigfd_set, w->signum); 3622 sigdelset (&sigfd_set, w->signum);
3623
2797 signalfd (sigfd, &sigfd_set, 0); 3624 signalfd (sigfd, &sigfd_set, 0);
2798 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3625 sigprocmask (SIG_UNBLOCK, &ss, 0);
2799 /*TODO: maybe unblock signal? */
2800 } 3626 }
2801 else 3627 else
2802#endif 3628#endif
2803 signal (w->signum, SIG_DFL); 3629 signal (w->signum, SIG_DFL);
2804 } 3630 }
2805 3631
2806 EV_FREQUENT_CHECK; 3632 EV_FREQUENT_CHECK;
2807} 3633}
2808 3634
3635#endif
3636
3637#if EV_CHILD_ENABLE
3638
2809void 3639void
2810ev_child_start (EV_P_ ev_child *w) 3640ev_child_start (EV_P_ ev_child *w) EV_THROW
2811{ 3641{
2812#if EV_MULTIPLICITY 3642#if EV_MULTIPLICITY
2813 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2814#endif 3644#endif
2815 if (expect_false (ev_is_active (w))) 3645 if (expect_false (ev_is_active (w)))
2816 return; 3646 return;
2817 3647
2818 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2819 3649
2820 ev_start (EV_A_ (W)w, 1); 3650 ev_start (EV_A_ (W)w, 1);
2821 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3651 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2822 3652
2823 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
2824} 3654}
2825 3655
2826void 3656void
2827ev_child_stop (EV_P_ ev_child *w) 3657ev_child_stop (EV_P_ ev_child *w) EV_THROW
2828{ 3658{
2829 clear_pending (EV_A_ (W)w); 3659 clear_pending (EV_A_ (W)w);
2830 if (expect_false (!ev_is_active (w))) 3660 if (expect_false (!ev_is_active (w)))
2831 return; 3661 return;
2832 3662
2833 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2834 3664
2835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3665 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2836 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2837 3667
2838 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2839} 3669}
3670
3671#endif
2840 3672
2841#if EV_STAT_ENABLE 3673#if EV_STAT_ENABLE
2842 3674
2843# ifdef _WIN32 3675# ifdef _WIN32
2844# undef lstat 3676# undef lstat
… …
2850#define MIN_STAT_INTERVAL 0.1074891 3682#define MIN_STAT_INTERVAL 0.1074891
2851 3683
2852static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3684static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2853 3685
2854#if EV_USE_INOTIFY 3686#if EV_USE_INOTIFY
2855# define EV_INOTIFY_BUFSIZE 8192 3687
3688/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3689# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2856 3690
2857static void noinline 3691static void noinline
2858infy_add (EV_P_ ev_stat *w) 3692infy_add (EV_P_ ev_stat *w)
2859{ 3693{
2860 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); 3694 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);
… …
2903 if (!pend || pend == path) 3737 if (!pend || pend == path)
2904 break; 3738 break;
2905 3739
2906 *pend = 0; 3740 *pend = 0;
2907 w->wd = inotify_add_watch (fs_fd, path, mask); 3741 w->wd = inotify_add_watch (fs_fd, path, mask);
2908 } 3742 }
2909 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3743 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2910 } 3744 }
2911 } 3745 }
2912 3746
2913 if (w->wd >= 0) 3747 if (w->wd >= 0)
2914 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3748 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2915 3749
2916 /* now re-arm timer, if required */ 3750 /* now re-arm timer, if required */
2917 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3751 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2918 ev_timer_again (EV_A_ &w->timer); 3752 ev_timer_again (EV_A_ &w->timer);
2919 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3753 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2927 3761
2928 if (wd < 0) 3762 if (wd < 0)
2929 return; 3763 return;
2930 3764
2931 w->wd = -2; 3765 w->wd = -2;
2932 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3766 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2933 wlist_del (&fs_hash [slot].head, (WL)w); 3767 wlist_del (&fs_hash [slot].head, (WL)w);
2934 3768
2935 /* remove this watcher, if others are watching it, they will rearm */ 3769 /* remove this watcher, if others are watching it, they will rearm */
2936 inotify_rm_watch (fs_fd, wd); 3770 inotify_rm_watch (fs_fd, wd);
2937} 3771}
… …
2939static void noinline 3773static void noinline
2940infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3774infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2941{ 3775{
2942 if (slot < 0) 3776 if (slot < 0)
2943 /* overflow, need to check for all hash slots */ 3777 /* overflow, need to check for all hash slots */
2944 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3778 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2945 infy_wd (EV_A_ slot, wd, ev); 3779 infy_wd (EV_A_ slot, wd, ev);
2946 else 3780 else
2947 { 3781 {
2948 WL w_; 3782 WL w_;
2949 3783
2950 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3784 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2951 { 3785 {
2952 ev_stat *w = (ev_stat *)w_; 3786 ev_stat *w = (ev_stat *)w_;
2953 w_ = w_->next; /* lets us remove this watcher and all before it */ 3787 w_ = w_->next; /* lets us remove this watcher and all before it */
2954 3788
2955 if (w->wd == wd || wd == -1) 3789 if (w->wd == wd || wd == -1)
2956 { 3790 {
2957 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3791 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2958 { 3792 {
2959 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3793 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2960 w->wd = -1; 3794 w->wd = -1;
2961 infy_add (EV_A_ w); /* re-add, no matter what */ 3795 infy_add (EV_A_ w); /* re-add, no matter what */
2962 } 3796 }
2963 3797
2964 stat_timer_cb (EV_A_ &w->timer, 0); 3798 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2969 3803
2970static void 3804static void
2971infy_cb (EV_P_ ev_io *w, int revents) 3805infy_cb (EV_P_ ev_io *w, int revents)
2972{ 3806{
2973 char buf [EV_INOTIFY_BUFSIZE]; 3807 char buf [EV_INOTIFY_BUFSIZE];
2974 struct inotify_event *ev = (struct inotify_event *)buf;
2975 int ofs; 3808 int ofs;
2976 int len = read (fs_fd, buf, sizeof (buf)); 3809 int len = read (fs_fd, buf, sizeof (buf));
2977 3810
2978 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3811 for (ofs = 0; ofs < len; )
3812 {
3813 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2979 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3814 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3815 ofs += sizeof (struct inotify_event) + ev->len;
3816 }
2980} 3817}
2981 3818
2982inline_size void 3819inline_size void ecb_cold
2983check_2625 (EV_P) 3820ev_check_2625 (EV_P)
2984{ 3821{
2985 /* kernels < 2.6.25 are borked 3822 /* kernels < 2.6.25 are borked
2986 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3823 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2987 */ 3824 */
2988 struct utsname buf; 3825 if (ev_linux_version () < 0x020619)
2989 int major, minor, micro;
2990
2991 if (uname (&buf))
2992 return;
2993
2994 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2995 return;
2996
2997 if (major < 2
2998 || (major == 2 && minor < 6)
2999 || (major == 2 && minor == 6 && micro < 25))
3000 return; 3826 return;
3001 3827
3002 fs_2625 = 1; 3828 fs_2625 = 1;
3003} 3829}
3004 3830
3005inline_size int 3831inline_size int
3006infy_newfd (void) 3832infy_newfd (void)
3007{ 3833{
3008#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3834#if defined IN_CLOEXEC && defined IN_NONBLOCK
3009 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3835 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3010 if (fd >= 0) 3836 if (fd >= 0)
3011 return fd; 3837 return fd;
3012#endif 3838#endif
3013 return inotify_init (); 3839 return inotify_init ();
… …
3019 if (fs_fd != -2) 3845 if (fs_fd != -2)
3020 return; 3846 return;
3021 3847
3022 fs_fd = -1; 3848 fs_fd = -1;
3023 3849
3024 check_2625 (EV_A); 3850 ev_check_2625 (EV_A);
3025 3851
3026 fs_fd = infy_newfd (); 3852 fs_fd = infy_newfd ();
3027 3853
3028 if (fs_fd >= 0) 3854 if (fs_fd >= 0)
3029 { 3855 {
… …
3054 ev_io_set (&fs_w, fs_fd, EV_READ); 3880 ev_io_set (&fs_w, fs_fd, EV_READ);
3055 ev_io_start (EV_A_ &fs_w); 3881 ev_io_start (EV_A_ &fs_w);
3056 ev_unref (EV_A); 3882 ev_unref (EV_A);
3057 } 3883 }
3058 3884
3059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3885 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3060 { 3886 {
3061 WL w_ = fs_hash [slot].head; 3887 WL w_ = fs_hash [slot].head;
3062 fs_hash [slot].head = 0; 3888 fs_hash [slot].head = 0;
3063 3889
3064 while (w_) 3890 while (w_)
… …
3088#else 3914#else
3089# define EV_LSTAT(p,b) lstat (p, b) 3915# define EV_LSTAT(p,b) lstat (p, b)
3090#endif 3916#endif
3091 3917
3092void 3918void
3093ev_stat_stat (EV_P_ ev_stat *w) 3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3094{ 3920{
3095 if (lstat (w->path, &w->attr) < 0) 3921 if (lstat (w->path, &w->attr) < 0)
3096 w->attr.st_nlink = 0; 3922 w->attr.st_nlink = 0;
3097 else if (!w->attr.st_nlink) 3923 else if (!w->attr.st_nlink)
3098 w->attr.st_nlink = 1; 3924 w->attr.st_nlink = 1;
… …
3137 ev_feed_event (EV_A_ w, EV_STAT); 3963 ev_feed_event (EV_A_ w, EV_STAT);
3138 } 3964 }
3139} 3965}
3140 3966
3141void 3967void
3142ev_stat_start (EV_P_ ev_stat *w) 3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3143{ 3969{
3144 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3145 return; 3971 return;
3146 3972
3147 ev_stat_stat (EV_A_ w); 3973 ev_stat_stat (EV_A_ w);
… …
3168 3994
3169 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3170} 3996}
3171 3997
3172void 3998void
3173ev_stat_stop (EV_P_ ev_stat *w) 3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3174{ 4000{
3175 clear_pending (EV_A_ (W)w); 4001 clear_pending (EV_A_ (W)w);
3176 if (expect_false (!ev_is_active (w))) 4002 if (expect_false (!ev_is_active (w)))
3177 return; 4003 return;
3178 4004
… …
3194} 4020}
3195#endif 4021#endif
3196 4022
3197#if EV_IDLE_ENABLE 4023#if EV_IDLE_ENABLE
3198void 4024void
3199ev_idle_start (EV_P_ ev_idle *w) 4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3200{ 4026{
3201 if (expect_false (ev_is_active (w))) 4027 if (expect_false (ev_is_active (w)))
3202 return; 4028 return;
3203 4029
3204 pri_adjust (EV_A_ (W)w); 4030 pri_adjust (EV_A_ (W)w);
… …
3217 4043
3218 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
3219} 4045}
3220 4046
3221void 4047void
3222ev_idle_stop (EV_P_ ev_idle *w) 4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3223{ 4049{
3224 clear_pending (EV_A_ (W)w); 4050 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4051 if (expect_false (!ev_is_active (w)))
3226 return; 4052 return;
3227 4053
… …
3239 4065
3240 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
3241} 4067}
3242#endif 4068#endif
3243 4069
4070#if EV_PREPARE_ENABLE
3244void 4071void
3245ev_prepare_start (EV_P_ ev_prepare *w) 4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3246{ 4073{
3247 if (expect_false (ev_is_active (w))) 4074 if (expect_false (ev_is_active (w)))
3248 return; 4075 return;
3249 4076
3250 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
… …
3255 4082
3256 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
3257} 4084}
3258 4085
3259void 4086void
3260ev_prepare_stop (EV_P_ ev_prepare *w) 4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3261{ 4088{
3262 clear_pending (EV_A_ (W)w); 4089 clear_pending (EV_A_ (W)w);
3263 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
3264 return; 4091 return;
3265 4092
… …
3274 4101
3275 ev_stop (EV_A_ (W)w); 4102 ev_stop (EV_A_ (W)w);
3276 4103
3277 EV_FREQUENT_CHECK; 4104 EV_FREQUENT_CHECK;
3278} 4105}
4106#endif
3279 4107
4108#if EV_CHECK_ENABLE
3280void 4109void
3281ev_check_start (EV_P_ ev_check *w) 4110ev_check_start (EV_P_ ev_check *w) EV_THROW
3282{ 4111{
3283 if (expect_false (ev_is_active (w))) 4112 if (expect_false (ev_is_active (w)))
3284 return; 4113 return;
3285 4114
3286 EV_FREQUENT_CHECK; 4115 EV_FREQUENT_CHECK;
… …
3291 4120
3292 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
3293} 4122}
3294 4123
3295void 4124void
3296ev_check_stop (EV_P_ ev_check *w) 4125ev_check_stop (EV_P_ ev_check *w) EV_THROW
3297{ 4126{
3298 clear_pending (EV_A_ (W)w); 4127 clear_pending (EV_A_ (W)w);
3299 if (expect_false (!ev_is_active (w))) 4128 if (expect_false (!ev_is_active (w)))
3300 return; 4129 return;
3301 4130
… …
3310 4139
3311 ev_stop (EV_A_ (W)w); 4140 ev_stop (EV_A_ (W)w);
3312 4141
3313 EV_FREQUENT_CHECK; 4142 EV_FREQUENT_CHECK;
3314} 4143}
4144#endif
3315 4145
3316#if EV_EMBED_ENABLE 4146#if EV_EMBED_ENABLE
3317void noinline 4147void noinline
3318ev_embed_sweep (EV_P_ ev_embed *w) 4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3319{ 4149{
3320 ev_loop (w->other, EVLOOP_NONBLOCK); 4150 ev_run (w->other, EVRUN_NOWAIT);
3321} 4151}
3322 4152
3323static void 4153static void
3324embed_io_cb (EV_P_ ev_io *io, int revents) 4154embed_io_cb (EV_P_ ev_io *io, int revents)
3325{ 4155{
3326 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4156 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3327 4157
3328 if (ev_cb (w)) 4158 if (ev_cb (w))
3329 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4159 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3330 else 4160 else
3331 ev_loop (w->other, EVLOOP_NONBLOCK); 4161 ev_run (w->other, EVRUN_NOWAIT);
3332} 4162}
3333 4163
3334static void 4164static void
3335embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4165embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3336{ 4166{
… …
3340 EV_P = w->other; 4170 EV_P = w->other;
3341 4171
3342 while (fdchangecnt) 4172 while (fdchangecnt)
3343 { 4173 {
3344 fd_reify (EV_A); 4174 fd_reify (EV_A);
3345 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4175 ev_run (EV_A_ EVRUN_NOWAIT);
3346 } 4176 }
3347 } 4177 }
3348} 4178}
3349 4179
3350static void 4180static void
… …
3356 4186
3357 { 4187 {
3358 EV_P = w->other; 4188 EV_P = w->other;
3359 4189
3360 ev_loop_fork (EV_A); 4190 ev_loop_fork (EV_A);
3361 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4191 ev_run (EV_A_ EVRUN_NOWAIT);
3362 } 4192 }
3363 4193
3364 ev_embed_start (EV_A_ w); 4194 ev_embed_start (EV_A_ w);
3365} 4195}
3366 4196
… …
3371 ev_idle_stop (EV_A_ idle); 4201 ev_idle_stop (EV_A_ idle);
3372} 4202}
3373#endif 4203#endif
3374 4204
3375void 4205void
3376ev_embed_start (EV_P_ ev_embed *w) 4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3377{ 4207{
3378 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
3379 return; 4209 return;
3380 4210
3381 { 4211 {
… …
3402 4232
3403 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3404} 4234}
3405 4235
3406void 4236void
3407ev_embed_stop (EV_P_ ev_embed *w) 4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3408{ 4238{
3409 clear_pending (EV_A_ (W)w); 4239 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4240 if (expect_false (!ev_is_active (w)))
3411 return; 4241 return;
3412 4242
… …
3414 4244
3415 ev_io_stop (EV_A_ &w->io); 4245 ev_io_stop (EV_A_ &w->io);
3416 ev_prepare_stop (EV_A_ &w->prepare); 4246 ev_prepare_stop (EV_A_ &w->prepare);
3417 ev_fork_stop (EV_A_ &w->fork); 4247 ev_fork_stop (EV_A_ &w->fork);
3418 4248
4249 ev_stop (EV_A_ (W)w);
4250
3419 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
3420} 4252}
3421#endif 4253#endif
3422 4254
3423#if EV_FORK_ENABLE 4255#if EV_FORK_ENABLE
3424void 4256void
3425ev_fork_start (EV_P_ ev_fork *w) 4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3426{ 4258{
3427 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
3428 return; 4260 return;
3429 4261
3430 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
… …
3435 4267
3436 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
3437} 4269}
3438 4270
3439void 4271void
3440ev_fork_stop (EV_P_ ev_fork *w) 4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3441{ 4273{
3442 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
3443 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
3444 return; 4276 return;
3445 4277
… …
3456 4288
3457 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3458} 4290}
3459#endif 4291#endif
3460 4292
4293#if EV_CLEANUP_ENABLE
4294void
4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4296{
4297 if (expect_false (ev_is_active (w)))
4298 return;
4299
4300 EV_FREQUENT_CHECK;
4301
4302 ev_start (EV_A_ (W)w, ++cleanupcnt);
4303 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4304 cleanups [cleanupcnt - 1] = w;
4305
4306 /* cleanup watchers should never keep a refcount on the loop */
4307 ev_unref (EV_A);
4308 EV_FREQUENT_CHECK;
4309}
4310
4311void
4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4313{
4314 clear_pending (EV_A_ (W)w);
4315 if (expect_false (!ev_is_active (w)))
4316 return;
4317
4318 EV_FREQUENT_CHECK;
4319 ev_ref (EV_A);
4320
4321 {
4322 int active = ev_active (w);
4323
4324 cleanups [active - 1] = cleanups [--cleanupcnt];
4325 ev_active (cleanups [active - 1]) = active;
4326 }
4327
4328 ev_stop (EV_A_ (W)w);
4329
4330 EV_FREQUENT_CHECK;
4331}
4332#endif
4333
3461#if EV_ASYNC_ENABLE 4334#if EV_ASYNC_ENABLE
3462void 4335void
3463ev_async_start (EV_P_ ev_async *w) 4336ev_async_start (EV_P_ ev_async *w) EV_THROW
3464{ 4337{
3465 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3466 return; 4339 return;
4340
4341 w->sent = 0;
3467 4342
3468 evpipe_init (EV_A); 4343 evpipe_init (EV_A);
3469 4344
3470 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3471 4346
… …
3475 4350
3476 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3477} 4352}
3478 4353
3479void 4354void
3480ev_async_stop (EV_P_ ev_async *w) 4355ev_async_stop (EV_P_ ev_async *w) EV_THROW
3481{ 4356{
3482 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3484 return; 4359 return;
3485 4360
… …
3496 4371
3497 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3498} 4373}
3499 4374
3500void 4375void
3501ev_async_send (EV_P_ ev_async *w) 4376ev_async_send (EV_P_ ev_async *w) EV_THROW
3502{ 4377{
3503 w->sent = 1; 4378 w->sent = 1;
3504 evpipe_write (EV_A_ &async_pending); 4379 evpipe_write (EV_A_ &async_pending);
3505} 4380}
3506#endif 4381#endif
… …
3543 4418
3544 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3545} 4420}
3546 4421
3547void 4422void
3548ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3549{ 4424{
3550 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3551 4426
3552 if (expect_false (!once)) 4427 if (expect_false (!once))
3553 { 4428 {
3554 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4429 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3555 return; 4430 return;
3556 } 4431 }
3557 4432
3558 once->cb = cb; 4433 once->cb = cb;
3559 once->arg = arg; 4434 once->arg = arg;
… …
3574} 4449}
3575 4450
3576/*****************************************************************************/ 4451/*****************************************************************************/
3577 4452
3578#if EV_WALK_ENABLE 4453#if EV_WALK_ENABLE
3579void 4454void ecb_cold
3580ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3581{ 4456{
3582 int i, j; 4457 int i, j;
3583 ev_watcher_list *wl, *wn; 4458 ev_watcher_list *wl, *wn;
3584 4459
3585 if (types & (EV_IO | EV_EMBED)) 4460 if (types & (EV_IO | EV_EMBED))
… …
3628 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4503 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3629#endif 4504#endif
3630 4505
3631#if EV_IDLE_ENABLE 4506#if EV_IDLE_ENABLE
3632 if (types & EV_IDLE) 4507 if (types & EV_IDLE)
3633 for (j = NUMPRI; i--; ) 4508 for (j = NUMPRI; j--; )
3634 for (i = idlecnt [j]; i--; ) 4509 for (i = idlecnt [j]; i--; )
3635 cb (EV_A_ EV_IDLE, idles [j][i]); 4510 cb (EV_A_ EV_IDLE, idles [j][i]);
3636#endif 4511#endif
3637 4512
3638#if EV_FORK_ENABLE 4513#if EV_FORK_ENABLE
… …
3646 if (types & EV_ASYNC) 4521 if (types & EV_ASYNC)
3647 for (i = asynccnt; i--; ) 4522 for (i = asynccnt; i--; )
3648 cb (EV_A_ EV_ASYNC, asyncs [i]); 4523 cb (EV_A_ EV_ASYNC, asyncs [i]);
3649#endif 4524#endif
3650 4525
4526#if EV_PREPARE_ENABLE
3651 if (types & EV_PREPARE) 4527 if (types & EV_PREPARE)
3652 for (i = preparecnt; i--; ) 4528 for (i = preparecnt; i--; )
3653#if EV_EMBED_ENABLE 4529# if EV_EMBED_ENABLE
3654 if (ev_cb (prepares [i]) != embed_prepare_cb) 4530 if (ev_cb (prepares [i]) != embed_prepare_cb)
3655#endif 4531# endif
3656 cb (EV_A_ EV_PREPARE, prepares [i]); 4532 cb (EV_A_ EV_PREPARE, prepares [i]);
4533#endif
3657 4534
4535#if EV_CHECK_ENABLE
3658 if (types & EV_CHECK) 4536 if (types & EV_CHECK)
3659 for (i = checkcnt; i--; ) 4537 for (i = checkcnt; i--; )
3660 cb (EV_A_ EV_CHECK, checks [i]); 4538 cb (EV_A_ EV_CHECK, checks [i]);
4539#endif
3661 4540
4541#if EV_SIGNAL_ENABLE
3662 if (types & EV_SIGNAL) 4542 if (types & EV_SIGNAL)
3663 for (i = 0; i < EV_NSIG - 1; ++i) 4543 for (i = 0; i < EV_NSIG - 1; ++i)
3664 for (wl = signals [i].head; wl; ) 4544 for (wl = signals [i].head; wl; )
3665 { 4545 {
3666 wn = wl->next; 4546 wn = wl->next;
3667 cb (EV_A_ EV_SIGNAL, wl); 4547 cb (EV_A_ EV_SIGNAL, wl);
3668 wl = wn; 4548 wl = wn;
3669 } 4549 }
4550#endif
3670 4551
4552#if EV_CHILD_ENABLE
3671 if (types & EV_CHILD) 4553 if (types & EV_CHILD)
3672 for (i = EV_PID_HASHSIZE; i--; ) 4554 for (i = (EV_PID_HASHSIZE); i--; )
3673 for (wl = childs [i]; wl; ) 4555 for (wl = childs [i]; wl; )
3674 { 4556 {
3675 wn = wl->next; 4557 wn = wl->next;
3676 cb (EV_A_ EV_CHILD, wl); 4558 cb (EV_A_ EV_CHILD, wl);
3677 wl = wn; 4559 wl = wn;
3678 } 4560 }
4561#endif
3679/* EV_STAT 0x00001000 /* stat data changed */ 4562/* EV_STAT 0x00001000 /* stat data changed */
3680/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4563/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3681} 4564}
3682#endif 4565#endif
3683 4566
3684#if EV_MULTIPLICITY 4567#if EV_MULTIPLICITY
3685 #include "ev_wrap.h" 4568 #include "ev_wrap.h"
3686#endif 4569#endif
3687 4570
3688#ifdef __cplusplus
3689}
3690#endif
3691

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