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Comparing libev/ev.c (file contents):
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC vs.
Revision 1.403 by root, Wed Jan 18 12:13:14 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
186# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
188# endif 198# endif
189# undef EV_AVOID_STDIO 199# undef EV_AVOID_STDIO
190#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
191 209
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
193 211
194/* try to deduce the maximum number of signals on this platform */ 212/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 213#if defined (EV_NSIG)
… …
217/* to make it compile regardless, just remove the above line, */ 235/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */ 236/* but consider reporting it, too! :) */
219# define EV_NSIG 65 237# define EV_NSIG 65
220#endif 238#endif
221 239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
243
222#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL 1 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 247# else
226# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
227# endif 249# endif
228#endif 250#endif
229 251
230#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 255# else
234# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
235# endif 257# endif
236#endif 258#endif
237 259
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 262#endif
241 263
242#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 267# else
246# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
247# endif 269# endif
248#endif 270#endif
249 271
250#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 274#endif
253 275
254#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
255# ifdef _WIN32 277# ifdef _WIN32
256# define EV_USE_POLL 0 278# define EV_USE_POLL 0
257# else 279# else
258# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 281# endif
260#endif 282#endif
261 283
262#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 287# else
266# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
267# endif 289# endif
268#endif 290#endif
269 291
… …
275# define EV_USE_PORT 0 297# define EV_USE_PORT 0
276#endif 298#endif
277 299
278#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 303# else
282# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
283# endif 305# endif
284#endif 306#endif
285 307
286#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 309# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
288# define EV_PID_HASHSIZE 1
289# else
290# define EV_PID_HASHSIZE 16
291# endif
292#endif 310#endif
293 311
294#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 313# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
296# define EV_INOTIFY_HASHSIZE 1
297# else
298# define EV_INOTIFY_HASHSIZE 16
299# endif
300#endif 314#endif
301 315
302#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 319# else
306# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
307# endif 321# endif
308#endif 322#endif
309 323
310#ifndef EV_USE_SIGNALFD 324#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 326# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 327# else
314# define EV_USE_SIGNALFD 0 328# define EV_USE_SIGNALFD 0
315# endif 329# endif
316#endif 330#endif
317 331
… …
320# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
322#endif 336#endif
323 337
324#ifndef EV_VERIFY 338#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 340#endif
327 341
328#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 344#endif
331 345
332#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
334#endif 348#endif
335 349
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */ 351/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 352#if EV_USE_CLOCK_SYSCALL
… …
369# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
371#endif 385#endif
372 386
373#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
375# include <sys/select.h> 390# include <sys/select.h>
376# endif 391# endif
377#endif 392#endif
378 393
379#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 395# include <sys/statfs.h>
382# include <sys/inotify.h> 396# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
402# define EFD_CLOEXEC O_CLOEXEC 416# define EFD_CLOEXEC O_CLOEXEC
403# else 417# else
404# define EFD_CLOEXEC 02000000 418# define EFD_CLOEXEC 02000000
405# endif 419# endif
406# endif 420# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 422#endif
415 423
416#if EV_USE_SIGNALFD 424#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 426# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 432# define SFD_CLOEXEC O_CLOEXEC
425# else 433# else
426# define SFD_CLOEXEC 02000000 434# define SFD_CLOEXEC 02000000
427# endif 435# endif
428# endif 436# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 438
434struct signalfd_siginfo 439struct signalfd_siginfo
435{ 440{
436 uint32_t ssi_signo; 441 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 442 char pad[128 - sizeof (uint32_t)];
438}; 443};
439# ifdef __cplusplus
440}
441# endif 444#endif
442#endif
443
444 445
445/**/ 446/**/
446 447
447#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 450#else
450# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
451#endif 452#endif
452 453
453/* 454/*
454 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
455 * It is added to ev_rt_now when scheduling periodics
456 * to ensure progress, time-wise, even when rounding
457 * errors are against us.
458 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 457 */
461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 460
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 508 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
468# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
469#else 515#else
470# define expect(expr,value) (expr) 516 #include <inttypes.h>
471# define noinline
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
473# define inline
474# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
475#endif 531 #endif
532#endif
476 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_xC >= 0x5110
545 #if __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif defined(__sparc)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore")
565 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
479#define inline_size static inline 937#define inline_size ecb_inline
480 938
481#if EV_MINIMAL 939#if EV_FEATURE_CODE
940# define inline_speed ecb_inline
941#else
482# define inline_speed static noinline 942# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 943#endif
486 944
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 946
489#if EV_MINPRI == EV_MAXPRI 947#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
504 962
505#if EV_USE_REALTIME 963#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 964/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 965/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 967#endif
510 968
511#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 984# include "ev_win32.c"
527#endif 985#endif
528 986
529/*****************************************************************************/ 987/*****************************************************************************/
530 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
531#if EV_AVOID_STDIO 1079#if EV_AVOID_STDIO
532static void noinline 1080static void noinline ecb_cold
533ev_printerr (const char *msg) 1081ev_printerr (const char *msg)
534{ 1082{
535 write (STDERR_FILENO, msg, strlen (msg)); 1083 write (STDERR_FILENO, msg, strlen (msg));
536} 1084}
537#endif 1085#endif
538 1086
539static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
540 1088
541void 1089void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
543{ 1091{
544 syserr_cb = cb; 1092 syserr_cb = cb;
545} 1093}
546 1094
547static void noinline 1095static void noinline ecb_cold
548ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
549{ 1097{
550 if (!msg) 1098 if (!msg)
551 msg = "(libev) system error"; 1099 msg = "(libev) system error";
552 1100
553 if (syserr_cb) 1101 if (syserr_cb)
554 syserr_cb (msg); 1102 syserr_cb (msg);
555 else 1103 else
556 { 1104 {
557#if EV_AVOID_STDIO 1105#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1106 ev_printerr (msg);
561 ev_printerr (": "); 1107 ev_printerr (": ");
562 ev_printerr (err); 1108 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1109 ev_printerr ("\n");
564#else 1110#else
565 perror (msg); 1111 perror (msg);
566#endif 1112#endif
567 abort (); 1113 abort ();
… …
587#endif 1133#endif
588} 1134}
589 1135
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
591 1137
592void 1138void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
594{ 1140{
595 alloc = cb; 1141 alloc = cb;
596} 1142}
597 1143
… …
601 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
602 1148
603 if (!ptr && size) 1149 if (!ptr && size)
604 { 1150 {
605#if EV_AVOID_STDIO 1151#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1153#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1155#endif
610 abort (); 1156 abort ();
611 } 1157 }
612 1158
613 return ptr; 1159 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1177 unsigned char unused;
632#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1180#endif
635#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1182 SOCKET handle;
1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
637#endif 1186#endif
638} ANFD; 1187} ANFD;
639 1188
640/* stores the pending event set for a given watcher */ 1189/* stores the pending event set for a given watcher */
641typedef struct 1190typedef struct
… …
683 #undef VAR 1232 #undef VAR
684 }; 1233 };
685 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
686 1235
687 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1238
690#else 1239#else
691 1240
692 ev_tstamp ev_rt_now; 1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
693 #define VAR(name,decl) static decl; 1242 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1243 #include "ev_vars.h"
695 #undef VAR 1244 #undef VAR
696 1245
697 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
698 1247
699#endif 1248#endif
700 1249
701#if EV_MINIMAL < 2 1250#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1251# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1252# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1253# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1254#else
706# define EV_RELEASE_CB (void)0 1255# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1256# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1258#endif
710 1259
711#define EVUNLOOP_RECURSE 0x80 1260#define EVBREAK_RECURSE 0x80
712 1261
713/*****************************************************************************/ 1262/*****************************************************************************/
714 1263
715#ifndef EV_HAVE_EV_TIME 1264#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1265ev_tstamp
… …
760 if (delay > 0.) 1309 if (delay > 0.)
761 { 1310 {
762#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
763 struct timespec ts; 1312 struct timespec ts;
764 1313
765 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1316#elif defined(_WIN32)
770 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
771#else 1318#else
772 struct timeval tv; 1319 struct timeval tv;
773 1320
774 tv.tv_sec = (time_t)delay;
775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
776
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
781#endif 1326#endif
782 } 1327 }
783} 1328}
784 1329
785/*****************************************************************************/ 1330/*****************************************************************************/
786 1331
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1333
789/* find a suitable new size for the given array, */ 1334/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1335/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1336inline_size int
792array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
793{ 1338{
794 int ncur = cur + 1; 1339 int ncur = cur + 1;
795 1340
796 do 1341 do
797 ncur <<= 1; 1342 ncur <<= 1;
798 while (cnt > ncur); 1343 while (cnt > ncur);
799 1344
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1347 {
803 ncur *= elem; 1348 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1352 }
808 1353
809 return ncur; 1354 return ncur;
810} 1355}
811 1356
812static noinline void * 1357static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1359{
815 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
817} 1362}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1366
822#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
824 { \ 1369 { \
825 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1374 }
830 1375
… …
930inline_size void 1475inline_size void
931fd_reify (EV_P) 1476fd_reify (EV_P)
932{ 1477{
933 int i; 1478 int i;
934 1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
1504
935 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
936 { 1506 {
937 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
939 ev_io *w; 1509 ev_io *w;
940 1510
941 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
942 1513
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1515
946#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1517 {
949 unsigned long arg; 1518 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1519
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1521 anfd->events |= (unsigned char)w->events;
1522
1523 if (o_events != anfd->events)
1524 o_reify = EV__IOFDSET; /* actually |= */
952 } 1525 }
953#endif
954 1526
955 { 1527 if (o_reify & EV__IOFDSET)
956 unsigned char o_events = anfd->events;
957 unsigned char o_reify = anfd->reify;
958
959 anfd->reify = 0;
960 anfd->events = events;
961
962 if (o_events != events || o_reify & EV__IOFDSET)
963 backend_modify (EV_A_ fd, o_events, events); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1529 }
966 1530
967 fdchangecnt = 0; 1531 fdchangecnt = 0;
968} 1532}
969 1533
… …
981 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
982 } 1546 }
983} 1547}
984 1548
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1550inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
988{ 1552{
989 ev_io *w; 1553 ev_io *w;
990 1554
991 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1559 }
996} 1560}
997 1561
998/* check whether the given fd is actually valid, for error recovery */ 1562/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1563inline_size int ecb_cold
1000fd_valid (int fd) 1564fd_valid (int fd)
1001{ 1565{
1002#ifdef _WIN32 1566#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1568#else
1005 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
1006#endif 1570#endif
1007} 1571}
1008 1572
1009/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
1010static void noinline 1574static void noinline ecb_cold
1011fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
1012{ 1576{
1013 int fd; 1577 int fd;
1014 1578
1015 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
1019} 1583}
1020 1584
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1586static void noinline ecb_cold
1023fd_enomem (EV_P) 1587fd_enomem (EV_P)
1024{ 1588{
1025 int fd; 1589 int fd;
1026 1590
1027 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
… …
1062} 1626}
1063 1627
1064/*****************************************************************************/ 1628/*****************************************************************************/
1065 1629
1066/* 1630/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
1070 */ 1634 */
1071 1635
1072/* 1636/*
… …
1222 1786
1223/*****************************************************************************/ 1787/*****************************************************************************/
1224 1788
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 1790
1227static void noinline 1791static void noinline ecb_cold
1228evpipe_init (EV_P) 1792evpipe_init (EV_P)
1229{ 1793{
1230 if (!ev_is_active (&pipe_w)) 1794 if (!ev_is_active (&pipe_w))
1231 { 1795 {
1232# if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
… …
1254 ev_io_start (EV_A_ &pipe_w); 1818 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 } 1820 }
1257} 1821}
1258 1822
1259inline_size void 1823inline_speed void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{ 1825{
1262 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1263 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1264 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268 1844
1269#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1270 if (evfd >= 0) 1846 if (evfd >= 0)
1271 { 1847 {
1272 uint64_t counter = 1; 1848 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1274 } 1850 }
1275 else 1851 else
1276#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1277 write (evpipe [1], &dummy, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1278 1861
1279 errno = old_errno; 1862 errno = old_errno;
1280 } 1863 }
1281} 1864}
1282 1865
… …
1285static void 1868static void
1286pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1287{ 1870{
1288 int i; 1871 int i;
1289 1872
1873 if (revents & EV_READ)
1874 {
1290#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1291 if (evfd >= 0) 1876 if (evfd >= 0)
1292 { 1877 {
1293 uint64_t counter; 1878 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1295 } 1880 }
1296 else 1881 else
1297#endif 1882#endif
1298 { 1883 {
1299 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1300 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1301 } 1888 }
1302 1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 1893 if (sig_pending)
1304 { 1894 {
1305 sig_pending = 0; 1895 sig_pending = 0;
1306 1896
1307 for (i = EV_NSIG - 1; i--; ) 1897 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 1898 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 1899 ev_feed_signal_event (EV_A_ i + 1);
1310 } 1900 }
1901#endif
1311 1902
1312#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1313 if (async_pending) 1904 if (async_pending)
1314 { 1905 {
1315 async_pending = 0; 1906 async_pending = 0;
… …
1324#endif 1915#endif
1325} 1916}
1326 1917
1327/*****************************************************************************/ 1918/*****************************************************************************/
1328 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1329static void 1937static void
1330ev_sighandler (int signum) 1938ev_sighandler (int signum)
1331{ 1939{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 1940#ifdef _WIN32
1337 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1338#endif 1942#endif
1339 1943
1340 signals [signum - 1].pending = 1; 1944 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 1945}
1343 1946
1344void noinline 1947void noinline
1345ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1346{ 1949{
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2006child_reap (EV_P_ int chain, int pid, int status)
1404{ 2007{
1405 ev_child *w; 2008 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2009 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2010
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2011 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2012 {
1410 if ((w->pid == pid || !w->pid) 2013 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2014 && (!traced || (w->flags & 1)))
1412 { 2015 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2016 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2041 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2042 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2043 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2044
1442 child_reap (EV_A_ pid, pid, status); 2045 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2046 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2047 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2048}
1446 2049
1447#endif 2050#endif
1448 2051
1449/*****************************************************************************/ 2052/*****************************************************************************/
1450 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1451#if EV_USE_PORT 2057#if EV_USE_PORT
1452# include "ev_port.c" 2058# include "ev_port.c"
1453#endif 2059#endif
1454#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1462#endif 2068#endif
1463#if EV_USE_SELECT 2069#if EV_USE_SELECT
1464# include "ev_select.c" 2070# include "ev_select.c"
1465#endif 2071#endif
1466 2072
1467int 2073int ecb_cold
1468ev_version_major (void) 2074ev_version_major (void)
1469{ 2075{
1470 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1471} 2077}
1472 2078
1473int 2079int ecb_cold
1474ev_version_minor (void) 2080ev_version_minor (void)
1475{ 2081{
1476 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1477} 2083}
1478 2084
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2086int inline_size ecb_cold
1481enable_secure (void) 2087enable_secure (void)
1482{ 2088{
1483#ifdef _WIN32 2089#ifdef _WIN32
1484 return 0; 2090 return 0;
1485#else 2091#else
1486 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2093 || getgid () != getegid ();
1488#endif 2094#endif
1489} 2095}
1490 2096
1491unsigned int 2097unsigned int ecb_cold
1492ev_supported_backends (void) 2098ev_supported_backends (void)
1493{ 2099{
1494 unsigned int flags = 0; 2100 unsigned int flags = 0;
1495 2101
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2107
1502 return flags; 2108 return flags;
1503} 2109}
1504 2110
1505unsigned int 2111unsigned int ecb_cold
1506ev_recommended_backends (void) 2112ev_recommended_backends (void)
1507{ 2113{
1508 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1509 2115
1510#ifndef __NetBSD__ 2116#ifndef __NetBSD__
… …
1515#ifdef __APPLE__ 2121#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2122 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2123 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2124 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2125#endif
2126#ifdef __FreeBSD__
2127 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2128#endif
1520 2129
1521 return flags; 2130 return flags;
1522} 2131}
1523 2132
1524unsigned int 2133unsigned int ecb_cold
1525ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1526{ 2135{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1528 2137
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1530 /* please fix it and tell me how to detect the fix */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1531 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1532 2141
1533 return flags; 2142 return flags;
1534} 2143}
1535 2144
1536unsigned int 2145unsigned int
1537ev_backend (EV_P) 2146ev_backend (EV_P)
1538{ 2147{
1539 return backend; 2148 return backend;
1540} 2149}
1541 2150
1542#if EV_MINIMAL < 2 2151#if EV_FEATURE_API
1543unsigned int 2152unsigned int
1544ev_loop_count (EV_P) 2153ev_iteration (EV_P)
1545{ 2154{
1546 return loop_count; 2155 return loop_count;
1547} 2156}
1548 2157
1549unsigned int 2158unsigned int
1550ev_loop_depth (EV_P) 2159ev_depth (EV_P)
1551{ 2160{
1552 return loop_depth; 2161 return loop_depth;
1553} 2162}
1554 2163
1555void 2164void
… …
1574ev_userdata (EV_P) 2183ev_userdata (EV_P)
1575{ 2184{
1576 return userdata; 2185 return userdata;
1577} 2186}
1578 2187
2188void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1580{ 2190{
1581 invoke_cb = invoke_pending_cb; 2191 invoke_cb = invoke_pending_cb;
1582} 2192}
1583 2193
2194void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1585{ 2196{
1586 release_cb = release; 2197 release_cb = release;
1587 acquire_cb = acquire; 2198 acquire_cb = acquire;
1588} 2199}
1589#endif 2200#endif
1590 2201
1591/* initialise a loop structure, must be zero-initialised */ 2202/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2203static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1594{ 2205{
1595 if (!backend) 2206 if (!backend)
1596 { 2207 {
2208 origflags = flags;
2209
1597#if EV_USE_REALTIME 2210#if EV_USE_REALTIME
1598 if (!have_realtime) 2211 if (!have_realtime)
1599 { 2212 {
1600 struct timespec ts; 2213 struct timespec ts;
1601 2214
… …
1623 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2237 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2240
1628 ev_rt_now = ev_time (); 2241 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2242 mn_now = get_clock ();
1630 now_floor = mn_now; 2243 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2244 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2245#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2246 invoke_cb = ev_invoke_pending;
1634#endif 2247#endif
1635 2248
1636 io_blocktime = 0.; 2249 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2250 timeout_blocktime = 0.;
1638 backend = 0; 2251 backend = 0;
1639 backend_fd = -1; 2252 backend_fd = -1;
1640 sig_pending = 0; 2253 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2254#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2255 async_pending = 0;
1643#endif 2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
1644#if EV_USE_INOTIFY 2259#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2261#endif
1647#if EV_USE_SIGNALFD 2262#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2264#endif
1650 2265
1651 if (!(flags & 0x0000ffffU)) 2266 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1653 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1654#if EV_USE_PORT 2272#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2274#endif
1657#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2293#endif
1676 } 2294 }
1677} 2295}
1678 2296
1679/* free up a loop structure */ 2297/* free up a loop structure */
1680static void noinline 2298void ecb_cold
1681loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1682{ 2300{
1683 int i; 2301 int i;
2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
1684 2325
1685 if (ev_is_active (&pipe_w)) 2326 if (ev_is_active (&pipe_w))
1686 { 2327 {
1687 /*ev_ref (EV_A);*/ 2328 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1710#endif 2351#endif
1711 2352
1712 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1713 close (backend_fd); 2354 close (backend_fd);
1714 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1715#if EV_USE_PORT 2359#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2361#endif
1718#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1747#endif 2391#endif
1748#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1750#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1751 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1755#endif 2402#endif
1756 2403
1757 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1758} 2414}
1759 2415
1760#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1762#endif 2418#endif
… …
1777 infy_fork (EV_A); 2433 infy_fork (EV_A);
1778#endif 2434#endif
1779 2435
1780 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1781 { 2437 {
1782 /* this "locks" the handlers against writing to the pipe */ 2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1788 2439
1789 ev_ref (EV_A); 2440 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2441 ev_io_stop (EV_A_ &pipe_w);
1791 2442
1792#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
… …
1810 postfork = 0; 2461 postfork = 0;
1811} 2462}
1812 2463
1813#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1814 2465
1815struct ev_loop * 2466struct ev_loop * ecb_cold
1816ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1817{ 2468{
1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1819 2470
1820 memset (EV_A, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1821 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1822 2473
1823 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1824 return EV_A; 2475 return EV_A;
1825 2476
2477 ev_free (EV_A);
1826 return 0; 2478 return 0;
1827} 2479}
1828 2480
1829void
1830ev_loop_destroy (EV_P)
1831{
1832 loop_destroy (EV_A);
1833 ev_free (loop);
1834}
1835
1836void
1837ev_loop_fork (EV_P)
1838{
1839 postfork = 1; /* must be in line with ev_default_fork */
1840}
1841#endif /* multiplicity */ 2481#endif /* multiplicity */
1842 2482
1843#if EV_VERIFY 2483#if EV_VERIFY
1844static void noinline 2484static void noinline ecb_cold
1845verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1846{ 2486{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848 2488
1849 if (w->pending) 2489 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851} 2491}
1852 2492
1853static void noinline 2493static void noinline ecb_cold
1854verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1855{ 2495{
1856 int i; 2496 int i;
1857 2497
1858 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1863 2503
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 } 2505 }
1866} 2506}
1867 2507
1868static void noinline 2508static void noinline ecb_cold
1869array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1870{ 2510{
1871 while (cnt--) 2511 while (cnt--)
1872 { 2512 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]); 2514 verify_watcher (EV_A_ ws [cnt]);
1875 } 2515 }
1876} 2516}
1877#endif 2517#endif
1878 2518
1879#if EV_MINIMAL < 2 2519#if EV_FEATURE_API
1880void 2520void ecb_cold
1881ev_loop_verify (EV_P) 2521ev_verify (EV_P)
1882{ 2522{
1883#if EV_VERIFY 2523#if EV_VERIFY
1884 int i; 2524 int i;
1885 WL w; 2525 WL w;
1886 2526
… …
1920#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif 2563#endif
1924 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1925#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif 2573#endif
1929 2574
… …
1937 array_verify (EV_A_ (W *)checks, checkcnt); 2582 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif 2583#endif
1939 2584
1940# if 0 2585# if 0
1941#if EV_CHILD_ENABLE 2586#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2587 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2588 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif 2589#endif
1945# endif 2590# endif
1946#endif 2591#endif
1947} 2592}
1948#endif 2593#endif
1949 2594
1950#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1951struct ev_loop * 2596struct ev_loop * ecb_cold
1952ev_default_loop_init (unsigned int flags)
1953#else 2597#else
1954int 2598int
2599#endif
1955ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1956#endif
1957{ 2601{
1958 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1959 { 2603 {
1960#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1980 2624
1981 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1982} 2626}
1983 2627
1984void 2628void
1985ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1986{ 2630{
1987#if EV_MULTIPLICITY
1988 EV_P = ev_default_loop_ptr;
1989#endif
1990
1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1994 ev_ref (EV_A); /* child watcher */
1995 ev_signal_stop (EV_A_ &childev);
1996#endif
1997
1998 loop_destroy (EV_A);
1999}
2000
2001void
2002ev_default_fork (void)
2003{
2004#if EV_MULTIPLICITY
2005 EV_P = ev_default_loop_ptr;
2006#endif
2007
2008 postfork = 1; /* must be in line with ev_loop_fork */ 2631 postfork = 1; /* must be in line with ev_default_fork */
2009} 2632}
2010 2633
2011/*****************************************************************************/ 2634/*****************************************************************************/
2012 2635
2013void 2636void
… …
2035 2658
2036 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
2037 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
2038 { 2661 {
2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2040
2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
2043 2663
2044 p->w->pending = 0; 2664 p->w->pending = 0;
2045 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
2046 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
2047 } 2667 }
… …
2104 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w); 2725 feed_reverse (EV_A_ (W)w);
2106 } 2726 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2727 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108 2728
2109 feed_reverse_done (EV_A_ EV_TIMEOUT); 2729 feed_reverse_done (EV_A_ EV_TIMER);
2110 } 2730 }
2111} 2731}
2112 2732
2113#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
2114/* make periodics pending */ 2759/* make periodics pending */
2115inline_size void 2760inline_size void
2116periodics_reify (EV_P) 2761periodics_reify (EV_P)
2117{ 2762{
2118 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
… …
2137 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
2139 } 2784 }
2140 else if (w->interval) 2785 else if (w->interval)
2141 { 2786 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2787 periodic_recalc (EV_A_ w);
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]); 2788 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 2789 downheap (periodics, periodiccnt, HEAP0);
2158 } 2790 }
2159 else 2791 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2167 feed_reverse_done (EV_A_ EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 } 2800 }
2169} 2801}
2170 2802
2171/* simply recalculate all periodics */ 2803/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
2173static void noinline 2805static void noinline ecb_cold
2174periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
2175{ 2807{
2176 int i; 2808 int i;
2177 2809
2178 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182 2814
2183 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval) 2817 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
2187 2819
2188 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
2189 } 2821 }
2190 2822
2191 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
2192} 2824}
2193#endif 2825#endif
2194 2826
2195/* adjust all timers by a given offset */ 2827/* adjust all timers by a given offset */
2196static void noinline 2828static void noinline ecb_cold
2197timers_reschedule (EV_P_ ev_tstamp adjust) 2829timers_reschedule (EV_P_ ev_tstamp adjust)
2198{ 2830{
2199 int i; 2831 int i;
2200 2832
2201 for (i = 0; i < timercnt; ++i) 2833 for (i = 0; i < timercnt; ++i)
… …
2238 * doesn't hurt either as we only do this on time-jumps or 2870 * doesn't hurt either as we only do this on time-jumps or
2239 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
2240 */ 2872 */
2241 for (i = 4; --i; ) 2873 for (i = 4; --i; )
2242 { 2874 {
2875 ev_tstamp diff;
2243 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
2244 2877
2878 diff = odiff - rtmn_diff;
2879
2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2246 return; /* all is well */ 2881 return; /* all is well */
2247 2882
2248 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
2249 mn_now = get_clock (); 2884 mn_now = get_clock ();
2250 now_floor = mn_now; 2885 now_floor = mn_now;
… …
2273 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
2274 } 2909 }
2275} 2910}
2276 2911
2277void 2912void
2278ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
2279{ 2914{
2280#if EV_MINIMAL < 2 2915#if EV_FEATURE_API
2281 ++loop_depth; 2916 ++loop_depth;
2282#endif 2917#endif
2283 2918
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2285 2920
2286 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
2287 2922
2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2289 2924
2290 do 2925 do
2291 { 2926 {
2292#if EV_VERIFY >= 2 2927#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A); 2928 ev_verify (EV_A);
2294#endif 2929#endif
2295 2930
2296#ifndef _WIN32 2931#ifndef _WIN32
2297 if (expect_false (curpid)) /* penalise the forking check even more */ 2932 if (expect_false (curpid)) /* penalise the forking check even more */
2298 if (expect_false (getpid () != curpid)) 2933 if (expect_false (getpid () != curpid))
… …
2334 /* calculate blocking time */ 2969 /* calculate blocking time */
2335 { 2970 {
2336 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
2337 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
2338 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2340 { 2986 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
2344 /* update time to cancel out callback processing overhead */
2345 time_update (EV_A_ 1e100);
2346
2347 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2348 2988
2349 if (timercnt) 2989 if (timercnt)
2350 { 2990 {
2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2352 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2353 } 2993 }
2354 2994
2355#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2356 if (periodiccnt) 2996 if (periodiccnt)
2357 { 2997 {
2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2359 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2360 } 3000 }
2361#endif 3001#endif
2362 3002
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2364 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2365 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
3006
3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2366 3011
2367 /* extra check because io_blocktime is commonly 0 */ 3012 /* extra check because io_blocktime is commonly 0 */
2368 if (expect_false (io_blocktime)) 3013 if (expect_false (io_blocktime))
2369 { 3014 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371 3016
2372 if (sleeptime > waittime - backend_fudge) 3017 if (sleeptime > waittime - backend_mintime)
2373 sleeptime = waittime - backend_fudge; 3018 sleeptime = waittime - backend_mintime;
2374 3019
2375 if (expect_true (sleeptime > 0.)) 3020 if (expect_true (sleeptime > 0.))
2376 { 3021 {
2377 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2378 waittime -= sleeptime; 3023 waittime -= sleeptime;
2379 } 3024 }
2380 } 3025 }
2381 } 3026 }
2382 3027
2383#if EV_MINIMAL < 2 3028#if EV_FEATURE_API
2384 ++loop_count; 3029 ++loop_count;
2385#endif 3030#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2387 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2389 3043
2390 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2391 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2392 } 3046 }
2393 3047
… …
2411 EV_INVOKE_PENDING; 3065 EV_INVOKE_PENDING;
2412 } 3066 }
2413 while (expect_true ( 3067 while (expect_true (
2414 activecnt 3068 activecnt
2415 && !loop_done 3069 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2417 )); 3071 ));
2418 3072
2419 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2420 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
2421 3075
2422#if EV_MINIMAL < 2 3076#if EV_FEATURE_API
2423 --loop_depth; 3077 --loop_depth;
2424#endif 3078#endif
2425} 3079}
2426 3080
2427void 3081void
2428ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2429{ 3083{
2430 loop_done = how; 3084 loop_done = how;
2431} 3085}
2432 3086
2433void 3087void
… …
2581 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2582 3236
2583 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2584 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2585 3239
2586 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2587 3241
2588 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2589} 3243}
2590 3244
2591void noinline 3245void noinline
… …
2683 if (w->reschedule_cb) 3337 if (w->reschedule_cb)
2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3338 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2685 else if (w->interval) 3339 else if (w->interval)
2686 { 3340 {
2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3341 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2688 /* this formula differs from the one in periodic_reify because we do not always round up */ 3342 periodic_recalc (EV_A_ w);
2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2690 } 3343 }
2691 else 3344 else
2692 ev_at (w) = w->offset; 3345 ev_at (w) = w->offset;
2693 3346
2694 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
… …
2815 sa.sa_handler = ev_sighandler; 3468 sa.sa_handler = ev_sighandler;
2816 sigfillset (&sa.sa_mask); 3469 sigfillset (&sa.sa_mask);
2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3470 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2818 sigaction (w->signum, &sa, 0); 3471 sigaction (w->signum, &sa, 0);
2819 3472
3473 if (origflags & EVFLAG_NOSIGMASK)
3474 {
2820 sigemptyset (&sa.sa_mask); 3475 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum); 3476 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3477 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3478 }
2823#endif 3479#endif
2824 } 3480 }
2825 3481
2826 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2827} 3483}
… …
2877 return; 3533 return;
2878 3534
2879 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2880 3536
2881 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3538 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2883 3539
2884 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2885} 3541}
2886 3542
2887void 3543void
… …
2891 if (expect_false (!ev_is_active (w))) 3547 if (expect_false (!ev_is_active (w)))
2892 return; 3548 return;
2893 3549
2894 EV_FREQUENT_CHECK; 3550 EV_FREQUENT_CHECK;
2895 3551
2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3552 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2897 ev_stop (EV_A_ (W)w); 3553 ev_stop (EV_A_ (W)w);
2898 3554
2899 EV_FREQUENT_CHECK; 3555 EV_FREQUENT_CHECK;
2900} 3556}
2901 3557
… …
2968 if (!pend || pend == path) 3624 if (!pend || pend == path)
2969 break; 3625 break;
2970 3626
2971 *pend = 0; 3627 *pend = 0;
2972 w->wd = inotify_add_watch (fs_fd, path, mask); 3628 w->wd = inotify_add_watch (fs_fd, path, mask);
2973 } 3629 }
2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2975 } 3631 }
2976 } 3632 }
2977 3633
2978 if (w->wd >= 0) 3634 if (w->wd >= 0)
2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3635 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2980 3636
2981 /* now re-arm timer, if required */ 3637 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3638 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer); 3639 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3640 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2992 3648
2993 if (wd < 0) 3649 if (wd < 0)
2994 return; 3650 return;
2995 3651
2996 w->wd = -2; 3652 w->wd = -2;
2997 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3653 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2998 wlist_del (&fs_hash [slot].head, (WL)w); 3654 wlist_del (&fs_hash [slot].head, (WL)w);
2999 3655
3000 /* remove this watcher, if others are watching it, they will rearm */ 3656 /* remove this watcher, if others are watching it, they will rearm */
3001 inotify_rm_watch (fs_fd, wd); 3657 inotify_rm_watch (fs_fd, wd);
3002} 3658}
… …
3004static void noinline 3660static void noinline
3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3661infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3006{ 3662{
3007 if (slot < 0) 3663 if (slot < 0)
3008 /* overflow, need to check for all hash slots */ 3664 /* overflow, need to check for all hash slots */
3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3010 infy_wd (EV_A_ slot, wd, ev); 3666 infy_wd (EV_A_ slot, wd, ev);
3011 else 3667 else
3012 { 3668 {
3013 WL w_; 3669 WL w_;
3014 3670
3015 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3671 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3016 { 3672 {
3017 ev_stat *w = (ev_stat *)w_; 3673 ev_stat *w = (ev_stat *)w_;
3018 w_ = w_->next; /* lets us remove this watcher and all before it */ 3674 w_ = w_->next; /* lets us remove this watcher and all before it */
3019 3675
3020 if (w->wd == wd || wd == -1) 3676 if (w->wd == wd || wd == -1)
3021 { 3677 {
3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3678 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3023 { 3679 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3680 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3025 w->wd = -1; 3681 w->wd = -1;
3026 infy_add (EV_A_ w); /* re-add, no matter what */ 3682 infy_add (EV_A_ w); /* re-add, no matter what */
3027 } 3683 }
3028 3684
3029 stat_timer_cb (EV_A_ &w->timer, 0); 3685 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3045 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3701 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len; 3702 ofs += sizeof (struct inotify_event) + ev->len;
3047 } 3703 }
3048} 3704}
3049 3705
3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void 3706inline_size void ecb_cold
3083ev_check_2625 (EV_P) 3707ev_check_2625 (EV_P)
3084{ 3708{
3085 /* kernels < 2.6.25 are borked 3709 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */ 3711 */
… …
3143 ev_io_set (&fs_w, fs_fd, EV_READ); 3767 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w); 3768 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A); 3769 ev_unref (EV_A);
3146 } 3770 }
3147 3771
3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3772 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3149 { 3773 {
3150 WL w_ = fs_hash [slot].head; 3774 WL w_ = fs_hash [slot].head;
3151 fs_hash [slot].head = 0; 3775 fs_hash [slot].head = 0;
3152 3776
3153 while (w_) 3777 while (w_)
… …
3408 4032
3409#if EV_EMBED_ENABLE 4033#if EV_EMBED_ENABLE
3410void noinline 4034void noinline
3411ev_embed_sweep (EV_P_ ev_embed *w) 4035ev_embed_sweep (EV_P_ ev_embed *w)
3412{ 4036{
3413 ev_loop (w->other, EVLOOP_NONBLOCK); 4037 ev_run (w->other, EVRUN_NOWAIT);
3414} 4038}
3415 4039
3416static void 4040static void
3417embed_io_cb (EV_P_ ev_io *io, int revents) 4041embed_io_cb (EV_P_ ev_io *io, int revents)
3418{ 4042{
3419 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4043 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3420 4044
3421 if (ev_cb (w)) 4045 if (ev_cb (w))
3422 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4046 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3423 else 4047 else
3424 ev_loop (w->other, EVLOOP_NONBLOCK); 4048 ev_run (w->other, EVRUN_NOWAIT);
3425} 4049}
3426 4050
3427static void 4051static void
3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4052embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3429{ 4053{
… …
3433 EV_P = w->other; 4057 EV_P = w->other;
3434 4058
3435 while (fdchangecnt) 4059 while (fdchangecnt)
3436 { 4060 {
3437 fd_reify (EV_A); 4061 fd_reify (EV_A);
3438 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4062 ev_run (EV_A_ EVRUN_NOWAIT);
3439 } 4063 }
3440 } 4064 }
3441} 4065}
3442 4066
3443static void 4067static void
… …
3449 4073
3450 { 4074 {
3451 EV_P = w->other; 4075 EV_P = w->other;
3452 4076
3453 ev_loop_fork (EV_A); 4077 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4078 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4079 }
3456 4080
3457 ev_embed_start (EV_A_ w); 4081 ev_embed_start (EV_A_ w);
3458} 4082}
3459 4083
… …
3551 4175
3552 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3553} 4177}
3554#endif 4178#endif
3555 4179
4180#if EV_CLEANUP_ENABLE
4181void
4182ev_cleanup_start (EV_P_ ev_cleanup *w)
4183{
4184 if (expect_false (ev_is_active (w)))
4185 return;
4186
4187 EV_FREQUENT_CHECK;
4188
4189 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4191 cleanups [cleanupcnt - 1] = w;
4192
4193 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK;
4196}
4197
4198void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w)
4200{
4201 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w)))
4203 return;
4204
4205 EV_FREQUENT_CHECK;
4206 ev_ref (EV_A);
4207
4208 {
4209 int active = ev_active (w);
4210
4211 cleanups [active - 1] = cleanups [--cleanupcnt];
4212 ev_active (cleanups [active - 1]) = active;
4213 }
4214
4215 ev_stop (EV_A_ (W)w);
4216
4217 EV_FREQUENT_CHECK;
4218}
4219#endif
4220
3556#if EV_ASYNC_ENABLE 4221#if EV_ASYNC_ENABLE
3557void 4222void
3558ev_async_start (EV_P_ ev_async *w) 4223ev_async_start (EV_P_ ev_async *w)
3559{ 4224{
3560 if (expect_false (ev_is_active (w))) 4225 if (expect_false (ev_is_active (w)))
3561 return; 4226 return;
4227
4228 w->sent = 0;
3562 4229
3563 evpipe_init (EV_A); 4230 evpipe_init (EV_A);
3564 4231
3565 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3566 4233
… …
3644{ 4311{
3645 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3646 4313
3647 if (expect_false (!once)) 4314 if (expect_false (!once))
3648 { 4315 {
3649 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3650 return; 4317 return;
3651 } 4318 }
3652 4319
3653 once->cb = cb; 4320 once->cb = cb;
3654 once->arg = arg; 4321 once->arg = arg;
… …
3669} 4336}
3670 4337
3671/*****************************************************************************/ 4338/*****************************************************************************/
3672 4339
3673#if EV_WALK_ENABLE 4340#if EV_WALK_ENABLE
3674void 4341void ecb_cold
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3676{ 4343{
3677 int i, j; 4344 int i, j;
3678 ev_watcher_list *wl, *wn; 4345 ev_watcher_list *wl, *wn;
3679 4346
… …
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4390 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif 4391#endif
3725 4392
3726#if EV_IDLE_ENABLE 4393#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE) 4394 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; ) 4395 for (j = NUMPRI; j--; )
3729 for (i = idlecnt [j]; i--; ) 4396 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]); 4397 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif 4398#endif
3732 4399
3733#if EV_FORK_ENABLE 4400#if EV_FORK_ENABLE
… …
3769 } 4436 }
3770#endif 4437#endif
3771 4438
3772#if EV_CHILD_ENABLE 4439#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD) 4440 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; ) 4441 for (i = (EV_PID_HASHSIZE); i--; )
3775 for (wl = childs [i]; wl; ) 4442 for (wl = childs [i]; wl; )
3776 { 4443 {
3777 wn = wl->next; 4444 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl); 4445 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn; 4446 wl = wn;
… …
3786 4453
3787#if EV_MULTIPLICITY 4454#if EV_MULTIPLICITY
3788 #include "ev_wrap.h" 4455 #include "ev_wrap.h"
3789#endif 4456#endif
3790 4457
3791#ifdef __cplusplus
3792}
3793#endif
3794

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