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Comparing libev/ev.c (file contents):
Revision 1.336 by root, Wed Mar 10 08:19:38 2010 UTC vs.
Revision 1.384 by root, Wed Jul 20 00:58:45 2011 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
… …
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
176#endif 186#endif
187
188EV_CPP(extern "C" {)
177 189
178#ifndef _WIN32 190#ifndef _WIN32
179# include <sys/time.h> 191# include <sys/time.h>
180# include <sys/wait.h> 192# include <sys/wait.h>
181# include <unistd.h> 193# include <unistd.h>
… …
186# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
188# endif 200# endif
189# undef EV_AVOID_STDIO 201# undef EV_AVOID_STDIO
190#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
191 211
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
193 213
194/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
217/* to make it compile regardless, just remove the above line, */ 237/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */ 238/* but consider reporting it, too! :) */
219# define EV_NSIG 65 239# define EV_NSIG 65
220#endif 240#endif
221 241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
222#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 249# else
226# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
227# endif 251# endif
228#endif 252#endif
229 253
230#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 257# else
234# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
235# endif 259# endif
236#endif 260#endif
237 261
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 264#endif
241 265
242#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 269# else
246# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
247# endif 271# endif
248#endif 272#endif
249 273
250#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 276#endif
253 277
254#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
255# ifdef _WIN32 279# ifdef _WIN32
256# define EV_USE_POLL 0 280# define EV_USE_POLL 0
257# else 281# else
258# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 283# endif
260#endif 284#endif
261 285
262#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 289# else
266# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
267# endif 291# endif
268#endif 292#endif
269 293
… …
275# define EV_USE_PORT 0 299# define EV_USE_PORT 0
276#endif 300#endif
277 301
278#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 305# else
282# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
283# endif 307# endif
284#endif 308#endif
285 309
286#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 311# 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 312#endif
293 313
294#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 315# 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 316#endif
301 317
302#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 321# else
306# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
307# endif 323# endif
308#endif 324#endif
309 325
310#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 329# else
314# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
315# endif 331# endif
316#endif 332#endif
317 333
… …
320# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
322#endif 338#endif
323 339
324#ifndef EV_VERIFY 340#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 342#endif
327 343
328#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 346#endif
331 347
332#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
334#endif 350#endif
335 351
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* 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. */ 353/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
369# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
371#endif 387#endif
372 388
373#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
375# include <sys/select.h> 392# include <sys/select.h>
376# endif 393# endif
377#endif 394#endif
378 395
379#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 397# include <sys/statfs.h>
382# include <sys/inotify.h> 398# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
402# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
403# else 419# else
404# define EFD_CLOEXEC 02000000 420# define EFD_CLOEXEC 02000000
405# endif 421# endif
406# endif 422# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 424#endif
415 425
416#if EV_USE_SIGNALFD 426#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 428# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 434# define SFD_CLOEXEC O_CLOEXEC
425# else 435# else
426# define SFD_CLOEXEC 02000000 436# define SFD_CLOEXEC 02000000
427# endif 437# endif
428# endif 438# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 440
434struct signalfd_siginfo 441struct signalfd_siginfo
435{ 442{
436 uint32_t ssi_signo; 443 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 444 char pad[128 - sizeof (uint32_t)];
438}; 445};
439# ifdef __cplusplus
440}
441# endif 446#endif
442#endif
443
444 447
445/**/ 448/**/
446 449
447#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 452#else
450# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
451#endif 454#endif
452 455
453/* 456/*
454 * This is used to avoid floating point rounding problems. 457 * 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. 458 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 459 */
461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 462
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#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) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 465
466#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
469#else 493#else
470# define expect(expr,value) (expr) 494 #define ecb_inline static
471# define noinline
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
473# define inline
474# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
475#endif 508 #endif
509#endif
476 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1)
537 #define ecb_attribute(attrlist) __attribute__(attrlist)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality)
546#endif
547
548#define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__))
550#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__))
553
554#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__))
558#else
559 #define ecb_artificial
560 #define ecb_hot
561 #define ecb_cold
562#endif
563
564/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */
570
571#define expect_false(cond) ecb_expect_false (cond)
572#define expect_true(cond) ecb_expect_true (cond)
573#define noinline ecb_noinline
574
479#define inline_size static inline 575#define inline_size ecb_inline
480 576
481#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
482# define inline_speed static noinline 580# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 581#endif
486 582
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 584
489#if EV_MINPRI == EV_MAXPRI 585#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 598#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 599#define ev_at(w) ((WT)(w))->at
504 600
505#if EV_USE_REALTIME 601#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 602/* 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 */ 603/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 604static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 605#endif
510 606
511#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 608static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 622# include "ev_win32.c"
527#endif 623#endif
528 624
529/*****************************************************************************/ 625/*****************************************************************************/
530 626
627/* define a suitable floor function (only used by periodics atm) */
628
629#if EV_USE_FLOOR
630# include <math.h>
631# define ev_floor(v) floor (v)
632#else
633
634#include <float.h>
635
636/* a floor() replacement function, should be independent of ev_tstamp type */
637static ev_tstamp noinline
638ev_floor (ev_tstamp v)
639{
640 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif
646
647 /* argument too large for an unsigned long? */
648 if (expect_false (v >= shift))
649 {
650 ev_tstamp f;
651
652 if (v == v - 1.)
653 return v; /* very large number */
654
655 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f);
657 }
658
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */
668 return (unsigned long)v;
669}
670
671#endif
672
673/*****************************************************************************/
674
675#ifdef __linux
676# include <sys/utsname.h>
677#endif
678
679static unsigned int noinline ecb_cold
680ev_linux_version (void)
681{
682#ifdef __linux
683 unsigned int v = 0;
684 struct utsname buf;
685 int i;
686 char *p = buf.release;
687
688 if (uname (&buf))
689 return 0;
690
691 for (i = 3+1; --i; )
692 {
693 unsigned int c = 0;
694
695 for (;;)
696 {
697 if (*p >= '0' && *p <= '9')
698 c = c * 10 + *p++ - '0';
699 else
700 {
701 p += *p == '.';
702 break;
703 }
704 }
705
706 v = (v << 8) | c;
707 }
708
709 return v;
710#else
711 return 0;
712#endif
713}
714
715/*****************************************************************************/
716
531#if EV_AVOID_STDIO 717#if EV_AVOID_STDIO
532static void noinline 718static void noinline ecb_cold
533ev_printerr (const char *msg) 719ev_printerr (const char *msg)
534{ 720{
535 write (STDERR_FILENO, msg, strlen (msg)); 721 write (STDERR_FILENO, msg, strlen (msg));
536} 722}
537#endif 723#endif
538 724
539static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
540 726
541void 727void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
543{ 729{
544 syserr_cb = cb; 730 syserr_cb = cb;
545} 731}
546 732
547static void noinline 733static void noinline ecb_cold
548ev_syserr (const char *msg) 734ev_syserr (const char *msg)
549{ 735{
550 if (!msg) 736 if (!msg)
551 msg = "(libev) system error"; 737 msg = "(libev) system error";
552 738
553 if (syserr_cb) 739 if (syserr_cb)
554 syserr_cb (msg); 740 syserr_cb (msg);
555 else 741 else
556 { 742 {
557#if EV_AVOID_STDIO 743#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 744 ev_printerr (msg);
561 ev_printerr (": "); 745 ev_printerr (": ");
562 ev_printerr (err); 746 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 747 ev_printerr ("\n");
564#else 748#else
565 perror (msg); 749 perror (msg);
566#endif 750#endif
567 abort (); 751 abort ();
… …
587#endif 771#endif
588} 772}
589 773
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
591 775
592void 776void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
594{ 778{
595 alloc = cb; 779 alloc = cb;
596} 780}
597 781
… …
601 ptr = alloc (ptr, size); 785 ptr = alloc (ptr, size);
602 786
603 if (!ptr && size) 787 if (!ptr && size)
604 { 788 {
605#if EV_AVOID_STDIO 789#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 791#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 793#endif
610 abort (); 794 abort ();
611 } 795 }
612 796
613 return ptr; 797 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 815 unsigned char unused;
632#if EV_USE_EPOLL 816#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 817 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 818#endif
635#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 820 SOCKET handle;
821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
637#endif 824#endif
638} ANFD; 825} ANFD;
639 826
640/* stores the pending event set for a given watcher */ 827/* stores the pending event set for a given watcher */
641typedef struct 828typedef struct
… …
696 883
697 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
698 885
699#endif 886#endif
700 887
701#if EV_MINIMAL < 2 888#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 889# 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) 890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 891# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 892#else
706# define EV_RELEASE_CB (void)0 893# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 894# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 896#endif
710 897
711#define EVUNLOOP_RECURSE 0x80 898#define EVBREAK_RECURSE 0x80
712 899
713/*****************************************************************************/ 900/*****************************************************************************/
714 901
715#ifndef EV_HAVE_EV_TIME 902#ifndef EV_HAVE_EV_TIME
716ev_tstamp 903ev_tstamp
… …
760 if (delay > 0.) 947 if (delay > 0.)
761 { 948 {
762#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
763 struct timespec ts; 950 struct timespec ts;
764 951
765 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
769#elif defined(_WIN32) 954#elif defined(_WIN32)
770 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
771#else 956#else
772 struct timeval tv; 957 struct timeval tv;
773 958
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 */ 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 960 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 961 /* by older ones */
962 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
781#endif 964#endif
782 } 965 }
783} 966}
784 967
785/*****************************************************************************/ 968/*****************************************************************************/
786 969
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 970#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 971
789/* find a suitable new size for the given array, */ 972/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 973/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 974inline_size int
792array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
793{ 976{
794 int ncur = cur + 1; 977 int ncur = cur + 1;
795 978
… …
807 } 990 }
808 991
809 return ncur; 992 return ncur;
810} 993}
811 994
812static noinline void * 995static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
814{ 997{
815 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
817} 1000}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1004
822#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
824 { \ 1007 { \
825 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1012 }
830 1013
… …
891} 1074}
892 1075
893/*****************************************************************************/ 1076/*****************************************************************************/
894 1077
895inline_speed void 1078inline_speed void
896fd_event_nc (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
897{ 1080{
898 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
899 ev_io *w; 1082 ev_io *w;
900 1083
901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
913fd_event (EV_P_ int fd, int revents) 1096fd_event (EV_P_ int fd, int revents)
914{ 1097{
915 ANFD *anfd = anfds + fd; 1098 ANFD *anfd = anfds + fd;
916 1099
917 if (expect_true (!anfd->reify)) 1100 if (expect_true (!anfd->reify))
918 fd_event_nc (EV_A_ fd, revents); 1101 fd_event_nocheck (EV_A_ fd, revents);
919} 1102}
920 1103
921void 1104void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
923{ 1106{
924 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
925 fd_event_nc (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
926} 1109}
927 1110
928/* make sure the external fd watch events are in-sync */ 1111/* make sure the external fd watch events are in-sync */
929/* with the kernel/libev internal state */ 1112/* with the kernel/libev internal state */
930inline_size void 1113inline_size void
931fd_reify (EV_P) 1114fd_reify (EV_P)
932{ 1115{
933 int i; 1116 int i;
934 1117
1118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1119 for (i = 0; i < fdchangecnt; ++i)
1120 {
1121 int fd = fdchanges [i];
1122 ANFD *anfd = anfds + fd;
1123
1124 if (anfd->reify & EV__IOFDSET && anfd->head)
1125 {
1126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1127
1128 if (handle != anfd->handle)
1129 {
1130 unsigned long arg;
1131
1132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1133
1134 /* handle changed, but fd didn't - we need to do it in two steps */
1135 backend_modify (EV_A_ fd, anfd->events, 0);
1136 anfd->events = 0;
1137 anfd->handle = handle;
1138 }
1139 }
1140 }
1141#endif
1142
935 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
936 { 1144 {
937 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
939 ev_io *w; 1147 ev_io *w;
940 1148
941 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
942 1151
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1153
946#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1155 {
949 unsigned long arg; 1156 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1157
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1159 anfd->events |= (unsigned char)w->events;
1160
1161 if (o_events != anfd->events)
1162 o_reify = EV__IOFDSET; /* actually |= */
952 } 1163 }
953#endif
954 1164
955 { 1165 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); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1167 }
966 1168
967 fdchangecnt = 0; 1169 fdchangecnt = 0;
968} 1170}
969 1171
… …
981 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
982 } 1184 }
983} 1185}
984 1186
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1188inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
988{ 1190{
989 ev_io *w; 1191 ev_io *w;
990 1192
991 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1197 }
996} 1198}
997 1199
998/* check whether the given fd is actually valid, for error recovery */ 1200/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1201inline_size int ecb_cold
1000fd_valid (int fd) 1202fd_valid (int fd)
1001{ 1203{
1002#ifdef _WIN32 1204#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1206#else
1005 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
1006#endif 1208#endif
1007} 1209}
1008 1210
1009/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
1010static void noinline 1212static void noinline ecb_cold
1011fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
1012{ 1214{
1013 int fd; 1215 int fd;
1014 1216
1015 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
1019} 1221}
1020 1222
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1223/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1224static void noinline ecb_cold
1023fd_enomem (EV_P) 1225fd_enomem (EV_P)
1024{ 1226{
1025 int fd; 1227 int fd;
1026 1228
1027 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
… …
1062} 1264}
1063 1265
1064/*****************************************************************************/ 1266/*****************************************************************************/
1065 1267
1066/* 1268/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 1269 * 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 1270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 1271 * the branching factor of the d-tree.
1070 */ 1272 */
1071 1273
1072/* 1274/*
… …
1222 1424
1223/*****************************************************************************/ 1425/*****************************************************************************/
1224 1426
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 1428
1227static void noinline 1429static void noinline ecb_cold
1228evpipe_init (EV_P) 1430evpipe_init (EV_P)
1229{ 1431{
1230 if (!ev_is_active (&pipe_w)) 1432 if (!ev_is_active (&pipe_w))
1231 { 1433 {
1232# if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
… …
1254 ev_io_start (EV_A_ &pipe_w); 1456 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 } 1458 }
1257} 1459}
1258 1460
1259inline_size void 1461inline_speed void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{ 1463{
1262 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1474
1475 if (pipe_write_wanted)
1263 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1480
1264 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268 1482
1269#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
1270 if (evfd >= 0) 1484 if (evfd >= 0)
1271 { 1485 {
1272 uint64_t counter = 1; 1486 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
1274 } 1488 }
1275 else 1489 else
1276#endif 1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
1277 write (evpipe [1], &dummy, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
1278 1499
1279 errno = old_errno; 1500 errno = old_errno;
1280 } 1501 }
1281} 1502}
1282 1503
… …
1285static void 1506static void
1286pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
1287{ 1508{
1288 int i; 1509 int i;
1289 1510
1511 if (revents & EV_READ)
1512 {
1290#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
1291 if (evfd >= 0) 1514 if (evfd >= 0)
1292 { 1515 {
1293 uint64_t counter; 1516 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
1295 } 1518 }
1296 else 1519 else
1297#endif 1520#endif
1298 { 1521 {
1299 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1300 read (evpipe [0], &dummy, 1); 1524 read (evpipe [0], &dummy, 1);
1525 }
1301 } 1526 }
1302 1527
1528 pipe_write_skipped = 0;
1529
1530#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 1531 if (sig_pending)
1304 { 1532 {
1305 sig_pending = 0; 1533 sig_pending = 0;
1306 1534
1307 for (i = EV_NSIG - 1; i--; ) 1535 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 1536 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
1310 } 1538 }
1539#endif
1311 1540
1312#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
1313 if (async_pending) 1542 if (async_pending)
1314 { 1543 {
1315 async_pending = 0; 1544 async_pending = 0;
… …
1324#endif 1553#endif
1325} 1554}
1326 1555
1327/*****************************************************************************/ 1556/*****************************************************************************/
1328 1557
1558void
1559ev_feed_signal (int signum)
1560{
1561#if EV_MULTIPLICITY
1562 EV_P = signals [signum - 1].loop;
1563
1564 if (!EV_A)
1565 return;
1566#endif
1567
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending);
1573}
1574
1329static void 1575static void
1330ev_sighandler (int signum) 1576ev_sighandler (int signum)
1331{ 1577{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 1578#ifdef _WIN32
1337 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
1338#endif 1580#endif
1339 1581
1340 signals [signum - 1].pending = 1; 1582 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 1583}
1343 1584
1344void noinline 1585void noinline
1345ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
1346{ 1587{
… …
1403child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
1404{ 1645{
1405 ev_child *w; 1646 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 1648
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 1650 {
1410 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
1412 { 1653 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1654 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 */ 1679 /* 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 */ 1680 /* 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); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 1682
1442 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 1686}
1446 1687
1447#endif 1688#endif
1448 1689
1449/*****************************************************************************/ 1690/*****************************************************************************/
1450 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1451#if EV_USE_PORT 1695#if EV_USE_PORT
1452# include "ev_port.c" 1696# include "ev_port.c"
1453#endif 1697#endif
1454#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1462#endif 1706#endif
1463#if EV_USE_SELECT 1707#if EV_USE_SELECT
1464# include "ev_select.c" 1708# include "ev_select.c"
1465#endif 1709#endif
1466 1710
1467int 1711int ecb_cold
1468ev_version_major (void) 1712ev_version_major (void)
1469{ 1713{
1470 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1471} 1715}
1472 1716
1473int 1717int ecb_cold
1474ev_version_minor (void) 1718ev_version_minor (void)
1475{ 1719{
1476 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1477} 1721}
1478 1722
1479/* return true if we are running with elevated privileges and should ignore env variables */ 1723/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 1724int inline_size ecb_cold
1481enable_secure (void) 1725enable_secure (void)
1482{ 1726{
1483#ifdef _WIN32 1727#ifdef _WIN32
1484 return 0; 1728 return 0;
1485#else 1729#else
1486 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1487 || getgid () != getegid (); 1731 || getgid () != getegid ();
1488#endif 1732#endif
1489} 1733}
1490 1734
1491unsigned int 1735unsigned int ecb_cold
1492ev_supported_backends (void) 1736ev_supported_backends (void)
1493{ 1737{
1494 unsigned int flags = 0; 1738 unsigned int flags = 0;
1495 1739
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 1745
1502 return flags; 1746 return flags;
1503} 1747}
1504 1748
1505unsigned int 1749unsigned int ecb_cold
1506ev_recommended_backends (void) 1750ev_recommended_backends (void)
1507{ 1751{
1508 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1509 1753
1510#ifndef __NetBSD__ 1754#ifndef __NetBSD__
… …
1515#ifdef __APPLE__ 1759#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 1760 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1761 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1762 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 1763#endif
1764#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1766#endif
1520 1767
1521 return flags; 1768 return flags;
1522} 1769}
1523 1770
1524unsigned int 1771unsigned int ecb_cold
1525ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1526{ 1773{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1528 1775
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1776 /* 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 */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1531 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1532 1779
1533 return flags; 1780 return flags;
1534} 1781}
1535 1782
1536unsigned int 1783unsigned int
1537ev_backend (EV_P) 1784ev_backend (EV_P)
1538{ 1785{
1539 return backend; 1786 return backend;
1540} 1787}
1541 1788
1542#if EV_MINIMAL < 2 1789#if EV_FEATURE_API
1543unsigned int 1790unsigned int
1544ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1545{ 1792{
1546 return loop_count; 1793 return loop_count;
1547} 1794}
1548 1795
1549unsigned int 1796unsigned int
1550ev_loop_depth (EV_P) 1797ev_depth (EV_P)
1551{ 1798{
1552 return loop_depth; 1799 return loop_depth;
1553} 1800}
1554 1801
1555void 1802void
… …
1574ev_userdata (EV_P) 1821ev_userdata (EV_P)
1575{ 1822{
1576 return userdata; 1823 return userdata;
1577} 1824}
1578 1825
1826void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1580{ 1828{
1581 invoke_cb = invoke_pending_cb; 1829 invoke_cb = invoke_pending_cb;
1582} 1830}
1583 1831
1832void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1585{ 1834{
1586 release_cb = release; 1835 release_cb = release;
1587 acquire_cb = acquire; 1836 acquire_cb = acquire;
1588} 1837}
1589#endif 1838#endif
1590 1839
1591/* initialise a loop structure, must be zero-initialised */ 1840/* initialise a loop structure, must be zero-initialised */
1592static void noinline 1841static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1594{ 1843{
1595 if (!backend) 1844 if (!backend)
1596 { 1845 {
1846 origflags = flags;
1847
1597#if EV_USE_REALTIME 1848#if EV_USE_REALTIME
1598 if (!have_realtime) 1849 if (!have_realtime)
1599 { 1850 {
1600 struct timespec ts; 1851 struct timespec ts;
1601 1852
… …
1623 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 1875 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 1878
1628 ev_rt_now = ev_time (); 1879 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 1880 mn_now = get_clock ();
1630 now_floor = mn_now; 1881 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 1882 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 1883#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 1884 invoke_cb = ev_invoke_pending;
1634#endif 1885#endif
1635 1886
1636 io_blocktime = 0.; 1887 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 1888 timeout_blocktime = 0.;
1638 backend = 0; 1889 backend = 0;
1639 backend_fd = -1; 1890 backend_fd = -1;
1640 sig_pending = 0; 1891 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 1892#if EV_ASYNC_ENABLE
1642 async_pending = 0; 1893 async_pending = 0;
1643#endif 1894#endif
1895 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0;
1644#if EV_USE_INOTIFY 1897#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 1899#endif
1647#if EV_USE_SIGNALFD 1900#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 1902#endif
1650 1903
1651 if (!(flags & 0x0000ffffU)) 1904 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1653 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1654#if EV_USE_PORT 1910#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 1912#endif
1657#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 1931#endif
1676 } 1932 }
1677} 1933}
1678 1934
1679/* free up a loop structure */ 1935/* free up a loop structure */
1680static void noinline 1936void ecb_cold
1681loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1682{ 1938{
1683 int i; 1939 int i;
1940
1941#if EV_MULTIPLICITY
1942 /* mimic free (0) */
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt))
1950 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING;
1953 }
1954#endif
1955
1956#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev))
1958 {
1959 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev);
1961 }
1962#endif
1684 1963
1685 if (ev_is_active (&pipe_w)) 1964 if (ev_is_active (&pipe_w))
1686 { 1965 {
1687 /*ev_ref (EV_A);*/ 1966 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1710#endif 1989#endif
1711 1990
1712 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1713 close (backend_fd); 1992 close (backend_fd);
1714 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1715#if EV_USE_PORT 1997#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 1999#endif
1718#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1747#endif 2029#endif
1748#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1750#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1751 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1755#endif 2040#endif
1756 2041
1757 backend = 0; 2042 backend = 0;
2043
2044#if EV_MULTIPLICITY
2045 if (ev_is_default_loop (EV_A))
2046#endif
2047 ev_default_loop_ptr = 0;
2048#if EV_MULTIPLICITY
2049 else
2050 ev_free (EV_A);
2051#endif
1758} 2052}
1759 2053
1760#if EV_USE_INOTIFY 2054#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
1762#endif 2056#endif
… …
1777 infy_fork (EV_A); 2071 infy_fork (EV_A);
1778#endif 2072#endif
1779 2073
1780 if (ev_is_active (&pipe_w)) 2074 if (ev_is_active (&pipe_w))
1781 { 2075 {
1782 /* this "locks" the handlers against writing to the pipe */ 2076 /* 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 2077
1789 ev_ref (EV_A); 2078 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2079 ev_io_stop (EV_A_ &pipe_w);
1791 2080
1792#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
… …
1798 { 2087 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 } 2090 }
1802 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1803 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1804 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1805 pipecb (EV_A_ &pipe_w, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1806 } 2097 }
1807 2098
1808 postfork = 0; 2099 postfork = 0;
1809} 2100}
1810 2101
1811#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1812 2103
1813struct ev_loop * 2104struct ev_loop * ecb_cold
1814ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1815{ 2106{
1816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1817 2108
1818 memset (EV_A, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1819 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1820 2111
1821 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1822 return EV_A; 2113 return EV_A;
1823 2114
2115 ev_free (EV_A);
1824 return 0; 2116 return 0;
1825} 2117}
1826 2118
1827void
1828ev_loop_destroy (EV_P)
1829{
1830 loop_destroy (EV_A);
1831 ev_free (loop);
1832}
1833
1834void
1835ev_loop_fork (EV_P)
1836{
1837 postfork = 1; /* must be in line with ev_default_fork */
1838}
1839#endif /* multiplicity */ 2119#endif /* multiplicity */
1840 2120
1841#if EV_VERIFY 2121#if EV_VERIFY
1842static void noinline 2122static void noinline ecb_cold
1843verify_watcher (EV_P_ W w) 2123verify_watcher (EV_P_ W w)
1844{ 2124{
1845 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1846 2126
1847 if (w->pending) 2127 if (w->pending)
1848 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1849} 2129}
1850 2130
1851static void noinline 2131static void noinline ecb_cold
1852verify_heap (EV_P_ ANHE *heap, int N) 2132verify_heap (EV_P_ ANHE *heap, int N)
1853{ 2133{
1854 int i; 2134 int i;
1855 2135
1856 for (i = HEAP0; i < N + HEAP0; ++i) 2136 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1861 2141
1862 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1863 } 2143 }
1864} 2144}
1865 2145
1866static void noinline 2146static void noinline ecb_cold
1867array_verify (EV_P_ W *ws, int cnt) 2147array_verify (EV_P_ W *ws, int cnt)
1868{ 2148{
1869 while (cnt--) 2149 while (cnt--)
1870 { 2150 {
1871 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1872 verify_watcher (EV_A_ ws [cnt]); 2152 verify_watcher (EV_A_ ws [cnt]);
1873 } 2153 }
1874} 2154}
1875#endif 2155#endif
1876 2156
1877#if EV_MINIMAL < 2 2157#if EV_FEATURE_API
1878void 2158void ecb_cold
1879ev_loop_verify (EV_P) 2159ev_verify (EV_P)
1880{ 2160{
1881#if EV_VERIFY 2161#if EV_VERIFY
1882 int i; 2162 int i;
1883 WL w; 2163 WL w;
1884 2164
… …
1918#if EV_FORK_ENABLE 2198#if EV_FORK_ENABLE
1919 assert (forkmax >= forkcnt); 2199 assert (forkmax >= forkcnt);
1920 array_verify (EV_A_ (W *)forks, forkcnt); 2200 array_verify (EV_A_ (W *)forks, forkcnt);
1921#endif 2201#endif
1922 2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
1923#if EV_ASYNC_ENABLE 2208#if EV_ASYNC_ENABLE
1924 assert (asyncmax >= asynccnt); 2209 assert (asyncmax >= asynccnt);
1925 array_verify (EV_A_ (W *)asyncs, asynccnt); 2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
1926#endif 2211#endif
1927 2212
2213#if EV_PREPARE_ENABLE
1928 assert (preparemax >= preparecnt); 2214 assert (preparemax >= preparecnt);
1929 array_verify (EV_A_ (W *)prepares, preparecnt); 2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
1930 2217
2218#if EV_CHECK_ENABLE
1931 assert (checkmax >= checkcnt); 2219 assert (checkmax >= checkcnt);
1932 array_verify (EV_A_ (W *)checks, checkcnt); 2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
1933 2222
1934# if 0 2223# if 0
1935#if EV_CHILD_ENABLE 2224#if EV_CHILD_ENABLE
1936 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1937 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1938#endif 2227#endif
1939# endif 2228# endif
1940#endif 2229#endif
1941} 2230}
1942#endif 2231#endif
1943 2232
1944#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1945struct ev_loop * 2234struct ev_loop * ecb_cold
1946ev_default_loop_init (unsigned int flags)
1947#else 2235#else
1948int 2236int
2237#endif
1949ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1950#endif
1951{ 2239{
1952 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1953 { 2241 {
1954#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1955 EV_P = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1974 2262
1975 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1976} 2264}
1977 2265
1978void 2266void
1979ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1980{ 2268{
1981#if EV_MULTIPLICITY
1982 EV_P = ev_default_loop_ptr;
1983#endif
1984
1985 ev_default_loop_ptr = 0;
1986
1987#if EV_CHILD_ENABLE
1988 ev_ref (EV_A); /* child watcher */
1989 ev_signal_stop (EV_A_ &childev);
1990#endif
1991
1992 loop_destroy (EV_A);
1993}
1994
1995void
1996ev_default_fork (void)
1997{
1998#if EV_MULTIPLICITY
1999 EV_P = ev_default_loop_ptr;
2000#endif
2001
2002 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
2003} 2270}
2004 2271
2005/*****************************************************************************/ 2272/*****************************************************************************/
2006 2273
2007void 2274void
… …
2029 2296
2030 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
2031 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
2032 { 2299 {
2033 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2034
2035 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2036 /* ^ this is no longer true, as pending_w could be here */
2037 2301
2038 p->w->pending = 0; 2302 p->w->pending = 0;
2039 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
2040 EV_FREQUENT_CHECK; 2304 EV_FREQUENT_CHECK;
2041 } 2305 }
… …
2098 EV_FREQUENT_CHECK; 2362 EV_FREQUENT_CHECK;
2099 feed_reverse (EV_A_ (W)w); 2363 feed_reverse (EV_A_ (W)w);
2100 } 2364 }
2101 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2102 2366
2103 feed_reverse_done (EV_A_ EV_TIMEOUT); 2367 feed_reverse_done (EV_A_ EV_TIMER);
2104 } 2368 }
2105} 2369}
2106 2370
2107#if EV_PERIODIC_ENABLE 2371#if EV_PERIODIC_ENABLE
2372
2373static void noinline
2374periodic_recalc (EV_P_ ev_periodic *w)
2375{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378
2379 /* the above almost always errs on the low side */
2380 while (at <= ev_rt_now)
2381 {
2382 ev_tstamp nat = at + w->interval;
2383
2384 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at))
2386 {
2387 at = ev_rt_now;
2388 break;
2389 }
2390
2391 at = nat;
2392 }
2393
2394 ev_at (w) = at;
2395}
2396
2108/* make periodics pending */ 2397/* make periodics pending */
2109inline_size void 2398inline_size void
2110periodics_reify (EV_P) 2399periodics_reify (EV_P)
2111{ 2400{
2112 EV_FREQUENT_CHECK; 2401 EV_FREQUENT_CHECK;
… …
2131 ANHE_at_cache (periodics [HEAP0]); 2420 ANHE_at_cache (periodics [HEAP0]);
2132 downheap (periodics, periodiccnt, HEAP0); 2421 downheap (periodics, periodiccnt, HEAP0);
2133 } 2422 }
2134 else if (w->interval) 2423 else if (w->interval)
2135 { 2424 {
2136 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2425 periodic_recalc (EV_A_ w);
2137 /* if next trigger time is not sufficiently in the future, put it there */
2138 /* this might happen because of floating point inexactness */
2139 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2140 {
2141 ev_at (w) += w->interval;
2142
2143 /* if interval is unreasonably low we might still have a time in the past */
2144 /* so correct this. this will make the periodic very inexact, but the user */
2145 /* has effectively asked to get triggered more often than possible */
2146 if (ev_at (w) < ev_rt_now)
2147 ev_at (w) = ev_rt_now;
2148 }
2149
2150 ANHE_at_cache (periodics [HEAP0]); 2426 ANHE_at_cache (periodics [HEAP0]);
2151 downheap (periodics, periodiccnt, HEAP0); 2427 downheap (periodics, periodiccnt, HEAP0);
2152 } 2428 }
2153 else 2429 else
2154 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2430 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2161 feed_reverse_done (EV_A_ EV_PERIODIC); 2437 feed_reverse_done (EV_A_ EV_PERIODIC);
2162 } 2438 }
2163} 2439}
2164 2440
2165/* simply recalculate all periodics */ 2441/* simply recalculate all periodics */
2166/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
2167static void noinline 2443static void noinline ecb_cold
2168periodics_reschedule (EV_P) 2444periodics_reschedule (EV_P)
2169{ 2445{
2170 int i; 2446 int i;
2171 2447
2172 /* adjust periodics after time jump */ 2448 /* adjust periodics after time jump */
… …
2175 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2176 2452
2177 if (w->reschedule_cb) 2453 if (w->reschedule_cb)
2178 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2179 else if (w->interval) 2455 else if (w->interval)
2180 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2456 periodic_recalc (EV_A_ w);
2181 2457
2182 ANHE_at_cache (periodics [i]); 2458 ANHE_at_cache (periodics [i]);
2183 } 2459 }
2184 2460
2185 reheap (periodics, periodiccnt); 2461 reheap (periodics, periodiccnt);
2186} 2462}
2187#endif 2463#endif
2188 2464
2189/* adjust all timers by a given offset */ 2465/* adjust all timers by a given offset */
2190static void noinline 2466static void noinline ecb_cold
2191timers_reschedule (EV_P_ ev_tstamp adjust) 2467timers_reschedule (EV_P_ ev_tstamp adjust)
2192{ 2468{
2193 int i; 2469 int i;
2194 2470
2195 for (i = 0; i < timercnt; ++i) 2471 for (i = 0; i < timercnt; ++i)
… …
2232 * doesn't hurt either as we only do this on time-jumps or 2508 * doesn't hurt either as we only do this on time-jumps or
2233 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
2234 */ 2510 */
2235 for (i = 4; --i; ) 2511 for (i = 4; --i; )
2236 { 2512 {
2513 ev_tstamp diff;
2237 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
2238 2515
2516 diff = odiff - rtmn_diff;
2517
2239 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2240 return; /* all is well */ 2519 return; /* all is well */
2241 2520
2242 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
2243 mn_now = get_clock (); 2522 mn_now = get_clock ();
2244 now_floor = mn_now; 2523 now_floor = mn_now;
… …
2267 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
2268 } 2547 }
2269} 2548}
2270 2549
2271void 2550void
2272ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
2273{ 2552{
2274#if EV_MINIMAL < 2 2553#if EV_FEATURE_API
2275 ++loop_depth; 2554 ++loop_depth;
2276#endif 2555#endif
2277 2556
2278 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2557 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2279 2558
2280 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
2281 2560
2282 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2561 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2283 2562
2284 do 2563 do
2285 { 2564 {
2286#if EV_VERIFY >= 2 2565#if EV_VERIFY >= 2
2287 ev_loop_verify (EV_A); 2566 ev_verify (EV_A);
2288#endif 2567#endif
2289 2568
2290#ifndef _WIN32 2569#ifndef _WIN32
2291 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
2292 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
… …
2304 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2305 EV_INVOKE_PENDING; 2584 EV_INVOKE_PENDING;
2306 } 2585 }
2307#endif 2586#endif
2308 2587
2588#if EV_PREPARE_ENABLE
2309 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
2310 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
2311 { 2591 {
2312 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2313 EV_INVOKE_PENDING; 2593 EV_INVOKE_PENDING;
2314 } 2594 }
2595#endif
2315 2596
2316 if (expect_false (loop_done)) 2597 if (expect_false (loop_done))
2317 break; 2598 break;
2318 2599
2319 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
… …
2326 /* calculate blocking time */ 2607 /* calculate blocking time */
2327 { 2608 {
2328 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
2330 2611
2612 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now;
2614
2615 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100);
2617
2618 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1;
2620
2621 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2622
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2332 { 2624 {
2333 /* remember old timestamp for io_blocktime calculation */
2334 ev_tstamp prev_mn_now = mn_now;
2335
2336 /* update time to cancel out callback processing overhead */
2337 time_update (EV_A_ 1e100);
2338
2339 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
2340 2626
2341 if (timercnt) 2627 if (timercnt)
2342 { 2628 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2344 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
2345 } 2631 }
2346 2632
2347#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
2348 if (periodiccnt) 2634 if (periodiccnt)
2349 { 2635 {
2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2351 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
2352 } 2638 }
2353#endif 2639#endif
2354 2640
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
2356 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
2357 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
2644
2645 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime;
2358 2649
2359 /* extra check because io_blocktime is commonly 0 */ 2650 /* extra check because io_blocktime is commonly 0 */
2360 if (expect_false (io_blocktime)) 2651 if (expect_false (io_blocktime))
2361 { 2652 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2653 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363 2654
2364 if (sleeptime > waittime - backend_fudge) 2655 if (sleeptime > waittime - backend_mintime)
2365 sleeptime = waittime - backend_fudge; 2656 sleeptime = waittime - backend_mintime;
2366 2657
2367 if (expect_true (sleeptime > 0.)) 2658 if (expect_true (sleeptime > 0.))
2368 { 2659 {
2369 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
2370 waittime -= sleeptime; 2661 waittime -= sleeptime;
2371 } 2662 }
2372 } 2663 }
2373 } 2664 }
2374 2665
2375#if EV_MINIMAL < 2 2666#if EV_FEATURE_API
2376 ++loop_count; 2667 ++loop_count;
2377#endif 2668#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 2670 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672
2673 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2674
2675 if (pipe_write_skipped)
2676 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 }
2680
2381 2681
2382 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
2384 } 2684 }
2385 2685
… …
2392#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
2393 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
2394 idle_reify (EV_A); 2694 idle_reify (EV_A);
2395#endif 2695#endif
2396 2696
2697#if EV_CHECK_ENABLE
2397 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
2398 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
2399 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
2400 2702
2401 EV_INVOKE_PENDING; 2703 EV_INVOKE_PENDING;
2402 } 2704 }
2403 while (expect_true ( 2705 while (expect_true (
2404 activecnt 2706 activecnt
2405 && !loop_done 2707 && !loop_done
2406 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2407 )); 2709 ));
2408 2710
2409 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
2410 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2411 2713
2412#if EV_MINIMAL < 2 2714#if EV_FEATURE_API
2413 --loop_depth; 2715 --loop_depth;
2414#endif 2716#endif
2415} 2717}
2416 2718
2417void 2719void
2418ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
2419{ 2721{
2420 loop_done = how; 2722 loop_done = how;
2421} 2723}
2422 2724
2423void 2725void
… …
2571 EV_FREQUENT_CHECK; 2873 EV_FREQUENT_CHECK;
2572 2874
2573 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
2574 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
2575 2877
2576 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2577 2879
2578 EV_FREQUENT_CHECK; 2880 EV_FREQUENT_CHECK;
2579} 2881}
2580 2882
2581void noinline 2883void noinline
… …
2673 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
2674 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2675 else if (w->interval) 2977 else if (w->interval)
2676 { 2978 {
2677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2979 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2678 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
2679 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2680 } 2981 }
2681 else 2982 else
2682 ev_at (w) = w->offset; 2983 ev_at (w) = w->offset;
2683 2984
2684 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
… …
2805 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2806 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3108 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2808 sigaction (w->signum, &sa, 0); 3109 sigaction (w->signum, &sa, 0);
2809 3110
3111 if (origflags & EVFLAG_NOSIGMASK)
3112 {
2810 sigemptyset (&sa.sa_mask); 3113 sigemptyset (&sa.sa_mask);
2811 sigaddset (&sa.sa_mask, w->signum); 3114 sigaddset (&sa.sa_mask, w->signum);
2812 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3115 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3116 }
2813#endif 3117#endif
2814 } 3118 }
2815 3119
2816 EV_FREQUENT_CHECK; 3120 EV_FREQUENT_CHECK;
2817} 3121}
… …
2867 return; 3171 return;
2868 3172
2869 EV_FREQUENT_CHECK; 3173 EV_FREQUENT_CHECK;
2870 3174
2871 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2872 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2873 3177
2874 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2875} 3179}
2876 3180
2877void 3181void
… …
2881 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2882 return; 3186 return;
2883 3187
2884 EV_FREQUENT_CHECK; 3188 EV_FREQUENT_CHECK;
2885 3189
2886 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2887 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
2888 3192
2889 EV_FREQUENT_CHECK; 3193 EV_FREQUENT_CHECK;
2890} 3194}
2891 3195
… …
2958 if (!pend || pend == path) 3262 if (!pend || pend == path)
2959 break; 3263 break;
2960 3264
2961 *pend = 0; 3265 *pend = 0;
2962 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2963 } 3267 }
2964 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2965 } 3269 }
2966 } 3270 }
2967 3271
2968 if (w->wd >= 0) 3272 if (w->wd >= 0)
2969 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2970 3274
2971 /* now re-arm timer, if required */ 3275 /* now re-arm timer, if required */
2972 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3276 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2973 ev_timer_again (EV_A_ &w->timer); 3277 ev_timer_again (EV_A_ &w->timer);
2974 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3278 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2982 3286
2983 if (wd < 0) 3287 if (wd < 0)
2984 return; 3288 return;
2985 3289
2986 w->wd = -2; 3290 w->wd = -2;
2987 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2988 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2989 3293
2990 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2991 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2992} 3296}
… …
2994static void noinline 3298static void noinline
2995infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2996{ 3300{
2997 if (slot < 0) 3301 if (slot < 0)
2998 /* overflow, need to check for all hash slots */ 3302 /* overflow, need to check for all hash slots */
2999 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3000 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
3001 else 3305 else
3002 { 3306 {
3003 WL w_; 3307 WL w_;
3004 3308
3005 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3006 { 3310 {
3007 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
3008 w_ = w_->next; /* lets us remove this watcher and all before it */ 3312 w_ = w_->next; /* lets us remove this watcher and all before it */
3009 3313
3010 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
3011 { 3315 {
3012 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3013 { 3317 {
3014 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3015 w->wd = -1; 3319 w->wd = -1;
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
3017 } 3321 }
3018 3322
3019 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3035 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3339 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3036 ofs += sizeof (struct inotify_event) + ev->len; 3340 ofs += sizeof (struct inotify_event) + ev->len;
3037 } 3341 }
3038} 3342}
3039 3343
3040inline_size unsigned int
3041ev_linux_version (void)
3042{
3043 struct utsname buf;
3044 unsigned int v;
3045 int i;
3046 char *p = buf.release;
3047
3048 if (uname (&buf))
3049 return 0;
3050
3051 for (i = 3+1; --i; )
3052 {
3053 unsigned int c = 0;
3054
3055 for (;;)
3056 {
3057 if (*p >= '0' && *p <= '9')
3058 c = c * 10 + *p++ - '0';
3059 else
3060 {
3061 p += *p == '.';
3062 break;
3063 }
3064 }
3065
3066 v = (v << 8) | c;
3067 }
3068
3069 return v;
3070}
3071
3072inline_size void 3344inline_size void ecb_cold
3073ev_check_2625 (EV_P) 3345ev_check_2625 (EV_P)
3074{ 3346{
3075 /* kernels < 2.6.25 are borked 3347 /* kernels < 2.6.25 are borked
3076 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3077 */ 3349 */
… …
3133 ev_io_set (&fs_w, fs_fd, EV_READ); 3405 ev_io_set (&fs_w, fs_fd, EV_READ);
3134 ev_io_start (EV_A_ &fs_w); 3406 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A); 3407 ev_unref (EV_A);
3136 } 3408 }
3137 3409
3138 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3139 { 3411 {
3140 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
3141 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
3142 3414
3143 while (w_) 3415 while (w_)
… …
3318 3590
3319 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
3320} 3592}
3321#endif 3593#endif
3322 3594
3595#if EV_PREPARE_ENABLE
3323void 3596void
3324ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
3325{ 3598{
3326 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
3327 return; 3600 return;
… …
3353 3626
3354 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
3355 3628
3356 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
3357} 3630}
3631#endif
3358 3632
3633#if EV_CHECK_ENABLE
3359void 3634void
3360ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
3361{ 3636{
3362 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
3363 return; 3638 return;
… …
3389 3664
3390 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
3391 3666
3392 EV_FREQUENT_CHECK; 3667 EV_FREQUENT_CHECK;
3393} 3668}
3669#endif
3394 3670
3395#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
3396void noinline 3672void noinline
3397ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
3398{ 3674{
3399 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
3400} 3676}
3401 3677
3402static void 3678static void
3403embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
3404{ 3680{
3405 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3406 3682
3407 if (ev_cb (w)) 3683 if (ev_cb (w))
3408 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3409 else 3685 else
3410 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
3411} 3687}
3412 3688
3413static void 3689static void
3414embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3415{ 3691{
… …
3419 EV_P = w->other; 3695 EV_P = w->other;
3420 3696
3421 while (fdchangecnt) 3697 while (fdchangecnt)
3422 { 3698 {
3423 fd_reify (EV_A); 3699 fd_reify (EV_A);
3424 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
3425 } 3701 }
3426 } 3702 }
3427} 3703}
3428 3704
3429static void 3705static void
… …
3435 3711
3436 { 3712 {
3437 EV_P = w->other; 3713 EV_P = w->other;
3438 3714
3439 ev_loop_fork (EV_A); 3715 ev_loop_fork (EV_A);
3440 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3716 ev_run (EV_A_ EVRUN_NOWAIT);
3441 } 3717 }
3442 3718
3443 ev_embed_start (EV_A_ w); 3719 ev_embed_start (EV_A_ w);
3444} 3720}
3445 3721
… …
3537 3813
3538 EV_FREQUENT_CHECK; 3814 EV_FREQUENT_CHECK;
3539} 3815}
3540#endif 3816#endif
3541 3817
3818#if EV_CLEANUP_ENABLE
3819void
3820ev_cleanup_start (EV_P_ ev_cleanup *w)
3821{
3822 if (expect_false (ev_is_active (w)))
3823 return;
3824
3825 EV_FREQUENT_CHECK;
3826
3827 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3829 cleanups [cleanupcnt - 1] = w;
3830
3831 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK;
3834}
3835
3836void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w)
3838{
3839 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w)))
3841 return;
3842
3843 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A);
3845
3846 {
3847 int active = ev_active (w);
3848
3849 cleanups [active - 1] = cleanups [--cleanupcnt];
3850 ev_active (cleanups [active - 1]) = active;
3851 }
3852
3853 ev_stop (EV_A_ (W)w);
3854
3855 EV_FREQUENT_CHECK;
3856}
3857#endif
3858
3542#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
3543void 3860void
3544ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
3545{ 3862{
3546 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
3547 return; 3864 return;
3865
3866 w->sent = 0;
3548 3867
3549 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
3550 3869
3551 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
3552 3871
… …
3630{ 3949{
3631 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3632 3951
3633 if (expect_false (!once)) 3952 if (expect_false (!once))
3634 { 3953 {
3635 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3636 return; 3955 return;
3637 } 3956 }
3638 3957
3639 once->cb = cb; 3958 once->cb = cb;
3640 once->arg = arg; 3959 once->arg = arg;
… …
3655} 3974}
3656 3975
3657/*****************************************************************************/ 3976/*****************************************************************************/
3658 3977
3659#if EV_WALK_ENABLE 3978#if EV_WALK_ENABLE
3660void 3979void ecb_cold
3661ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3662{ 3981{
3663 int i, j; 3982 int i, j;
3664 ev_watcher_list *wl, *wn; 3983 ev_watcher_list *wl, *wn;
3665 3984
… …
3727 if (types & EV_ASYNC) 4046 if (types & EV_ASYNC)
3728 for (i = asynccnt; i--; ) 4047 for (i = asynccnt; i--; )
3729 cb (EV_A_ EV_ASYNC, asyncs [i]); 4048 cb (EV_A_ EV_ASYNC, asyncs [i]);
3730#endif 4049#endif
3731 4050
4051#if EV_PREPARE_ENABLE
3732 if (types & EV_PREPARE) 4052 if (types & EV_PREPARE)
3733 for (i = preparecnt; i--; ) 4053 for (i = preparecnt; i--; )
3734#if EV_EMBED_ENABLE 4054# if EV_EMBED_ENABLE
3735 if (ev_cb (prepares [i]) != embed_prepare_cb) 4055 if (ev_cb (prepares [i]) != embed_prepare_cb)
3736#endif 4056# endif
3737 cb (EV_A_ EV_PREPARE, prepares [i]); 4057 cb (EV_A_ EV_PREPARE, prepares [i]);
4058#endif
3738 4059
4060#if EV_CHECK_ENABLE
3739 if (types & EV_CHECK) 4061 if (types & EV_CHECK)
3740 for (i = checkcnt; i--; ) 4062 for (i = checkcnt; i--; )
3741 cb (EV_A_ EV_CHECK, checks [i]); 4063 cb (EV_A_ EV_CHECK, checks [i]);
4064#endif
3742 4065
4066#if EV_SIGNAL_ENABLE
3743 if (types & EV_SIGNAL) 4067 if (types & EV_SIGNAL)
3744 for (i = 0; i < EV_NSIG - 1; ++i) 4068 for (i = 0; i < EV_NSIG - 1; ++i)
3745 for (wl = signals [i].head; wl; ) 4069 for (wl = signals [i].head; wl; )
3746 { 4070 {
3747 wn = wl->next; 4071 wn = wl->next;
3748 cb (EV_A_ EV_SIGNAL, wl); 4072 cb (EV_A_ EV_SIGNAL, wl);
3749 wl = wn; 4073 wl = wn;
3750 } 4074 }
4075#endif
3751 4076
4077#if EV_CHILD_ENABLE
3752 if (types & EV_CHILD) 4078 if (types & EV_CHILD)
3753 for (i = EV_PID_HASHSIZE; i--; ) 4079 for (i = (EV_PID_HASHSIZE); i--; )
3754 for (wl = childs [i]; wl; ) 4080 for (wl = childs [i]; wl; )
3755 { 4081 {
3756 wn = wl->next; 4082 wn = wl->next;
3757 cb (EV_A_ EV_CHILD, wl); 4083 cb (EV_A_ EV_CHILD, wl);
3758 wl = wn; 4084 wl = wn;
3759 } 4085 }
4086#endif
3760/* EV_STAT 0x00001000 /* stat data changed */ 4087/* EV_STAT 0x00001000 /* stat data changed */
3761/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4088/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3762} 4089}
3763#endif 4090#endif
3764 4091
3765#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
3766 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
3767#endif 4094#endif
3768 4095
3769#ifdef __cplusplus 4096EV_CPP(})
3770}
3771#endif
3772 4097

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