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Comparing libev/ev.c (file contents):
Revision 1.262 by root, Wed Oct 1 04:25:25 2008 UTC vs.
Revision 1.369 by root, Sun Jan 23 18:53:06 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 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 *
… …
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
51 47
48# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0
53# endif
54# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1
56# endif
57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
60# endif
61
52# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
55# endif 65# endif
56# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
58# endif 68# endif
59# else 69# else
60# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
62# endif 72# endif
63# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
65# endif 75# endif
66# endif 76# endif
67 77
78# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
71# else 82# else
83# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
74# endif 94# endif
75 95
96# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 99# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 100# else
101# undef EV_USE_POLL
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif
90# endif 103# endif
91 104
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
95# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
98# endif 112# endif
99 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
106# endif 121# endif
107 122
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
111# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
114# endif 130# endif
115 131
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
122# endif 139# endif
123 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
130# endif 157# endif
131 158
132#endif 159#endif
133 160
134#include <math.h> 161#include <math.h>
135#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
136#include <fcntl.h> 164#include <fcntl.h>
137#include <stddef.h> 165#include <stddef.h>
138 166
139#include <stdio.h> 167#include <stdio.h>
140 168
141#include <assert.h> 169#include <assert.h>
142#include <errno.h> 170#include <errno.h>
143#include <sys/types.h> 171#include <sys/types.h>
144#include <time.h> 172#include <time.h>
173#include <limits.h>
145 174
146#include <signal.h> 175#include <signal.h>
147 176
148#ifdef EV_H 177#ifdef EV_H
149# include EV_H 178# include EV_H
150#else 179#else
151# include "ev.h" 180# include "ev.h"
152#endif 181#endif
182
183EV_CPP(extern "C" {)
153 184
154#ifndef _WIN32 185#ifndef _WIN32
155# include <sys/time.h> 186# include <sys/time.h>
156# include <sys/wait.h> 187# include <sys/wait.h>
157# include <unistd.h> 188# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 192# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
164# endif 195# endif
196# undef EV_AVOID_STDIO
165#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
166 206
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
236
237#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else
241# define EV_USE_CLOCK_SYSCALL 0
242# endif
243#endif
168 244
169#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 248# else
173# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
174# endif 250# endif
175#endif 251#endif
176 252
177#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 255#endif
180 256
181#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 260# else
185# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
186# endif 262# endif
187#endif 263#endif
188 264
189#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 267#endif
192 268
193#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
194# ifdef _WIN32 270# ifdef _WIN32
195# define EV_USE_POLL 0 271# define EV_USE_POLL 0
196# else 272# else
197# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 274# endif
199#endif 275#endif
200 276
201#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 280# else
205# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
206# endif 282# endif
207#endif 283#endif
208 284
… …
214# define EV_USE_PORT 0 290# define EV_USE_PORT 0
215#endif 291#endif
216 292
217#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 296# else
221# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
222# endif 298# endif
223#endif 299#endif
224 300
225#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 303#endif
232 304
233#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 307#endif
240 308
241#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 312# else
245# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
246# endif 322# endif
247#endif 323#endif
248 324
249#if 0 /* debugging */ 325#if 0 /* debugging */
250# define EV_VERIFY 3 326# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
253#endif 329#endif
254 330
255#ifndef EV_VERIFY 331#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 333#endif
258 334
259#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 337#endif
262 338
263#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif
342
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h>
347# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1
351# else
352# undef EV_USE_CLOCK_SYSCALL
353# define EV_USE_CLOCK_SYSCALL 0
354# endif
265#endif 355#endif
266 356
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
268 364
269#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
272#endif 368#endif
… …
286# include <sys/select.h> 382# include <sys/select.h>
287# endif 383# endif
288#endif 384#endif
289 385
290#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/statfs.h>
291# include <sys/inotify.h> 388# include <sys/inotify.h>
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0
393# endif
292#endif 394#endif
293 395
294#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 397# include <winsock.h>
296#endif 398#endif
297 399
298#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
299/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300# include <stdint.h> 402# include <stdint.h>
301# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
302extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
303# endif 405# endif
304int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
305# ifdef __cplusplus 407# ifdef O_CLOEXEC
306} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
307# endif 412# endif
413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
430
431struct signalfd_siginfo
432{
433 uint32_t ssi_signo;
434 char pad[128 - sizeof (uint32_t)];
435};
308#endif 436#endif
309 437
310/**/ 438/**/
311 439
312#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 442#else
315# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
316#endif 444#endif
317 445
318/* 446/*
… …
325 */ 453 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327 455
328#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
329#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
330/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
331 461
332#if __GNUC__ >= 4 462#if __GNUC__ >= 4
333# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
334# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
335#else 465#else
… …
342 472
343#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
345#define inline_size static inline 475#define inline_size static inline
346 476
347#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
348# define inline_speed static noinline 480# define inline_speed static noinline
481#endif
482
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484
485#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0)
349#else 487#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
355 490
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
358 493
359typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
362 497
363#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
365 500
501#if EV_USE_REALTIME
502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
503/* giving it a reasonably high chance of working on typical architectures */
504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
505#endif
506
366#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
509#endif
510
511#ifndef EV_FD_TO_WIN32_HANDLE
512# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
513#endif
514#ifndef EV_WIN32_HANDLE_TO_FD
515# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
516#endif
517#ifndef EV_WIN32_CLOSE_FD
518# define EV_WIN32_CLOSE_FD(fd) close (fd)
370#endif 519#endif
371 520
372#ifdef _WIN32 521#ifdef _WIN32
373# include "ev_win32.c" 522# include "ev_win32.c"
374#endif 523#endif
375 524
376/*****************************************************************************/ 525/*****************************************************************************/
377 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
569#if EV_AVOID_STDIO
570static void noinline
571ev_printerr (const char *msg)
572{
573 write (STDERR_FILENO, msg, strlen (msg));
574}
575#endif
576
378static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
379 578
380void 579void
381ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 581{
383 syserr_cb = cb; 582 syserr_cb = cb;
384} 583}
385 584
386static void noinline 585static void noinline
387syserr (const char *msg) 586ev_syserr (const char *msg)
388{ 587{
389 if (!msg) 588 if (!msg)
390 msg = "(libev) system error"; 589 msg = "(libev) system error";
391 590
392 if (syserr_cb) 591 if (syserr_cb)
393 syserr_cb (msg); 592 syserr_cb (msg);
394 else 593 else
395 { 594 {
595#if EV_AVOID_STDIO
596 ev_printerr (msg);
597 ev_printerr (": ");
598 ev_printerr (strerror (errno));
599 ev_printerr ("\n");
600#else
396 perror (msg); 601 perror (msg);
602#endif
397 abort (); 603 abort ();
398 } 604 }
399} 605}
400 606
401static void * 607static void *
402ev_realloc_emul (void *ptr, long size) 608ev_realloc_emul (void *ptr, long size)
403{ 609{
610#if __GLIBC__
611 return realloc (ptr, size);
612#else
404 /* some systems, notably openbsd and darwin, fail to properly 613 /* some systems, notably openbsd and darwin, fail to properly
405 * implement realloc (x, 0) (as required by both ansi c-98 and 614 * implement realloc (x, 0) (as required by both ansi c-89 and
406 * the single unix specification, so work around them here. 615 * the single unix specification, so work around them here.
407 */ 616 */
408 617
409 if (size) 618 if (size)
410 return realloc (ptr, size); 619 return realloc (ptr, size);
411 620
412 free (ptr); 621 free (ptr);
413 return 0; 622 return 0;
623#endif
414} 624}
415 625
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 626static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 627
418void 628void
… …
426{ 636{
427 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
428 638
429 if (!ptr && size) 639 if (!ptr && size)
430 { 640 {
641#if EV_AVOID_STDIO
642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
643#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
645#endif
432 abort (); 646 abort ();
433 } 647 }
434 648
435 return ptr; 649 return ptr;
436} 650}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 652#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 653#define ev_free(ptr) ev_realloc ((ptr), 0)
440 654
441/*****************************************************************************/ 655/*****************************************************************************/
442 656
657/* set in reify when reification needed */
658#define EV_ANFD_REIFY 1
659
660/* file descriptor info structure */
443typedef struct 661typedef struct
444{ 662{
445 WL head; 663 WL head;
446 unsigned char events; 664 unsigned char events; /* the events watched for */
665 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 667 unsigned char unused;
668#if EV_USE_EPOLL
669 unsigned int egen; /* generation counter to counter epoll bugs */
670#endif
448#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
449 SOCKET handle; 672 SOCKET handle;
450#endif 673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
676#endif
451} ANFD; 677} ANFD;
452 678
679/* stores the pending event set for a given watcher */
453typedef struct 680typedef struct
454{ 681{
455 W w; 682 W w;
456 int events; 683 int events; /* the pending event set for the given watcher */
457} ANPENDING; 684} ANPENDING;
458 685
459#if EV_USE_INOTIFY 686#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 687/* hash table entry per inotify-id */
461typedef struct 688typedef struct
… …
464} ANFS; 691} ANFS;
465#endif 692#endif
466 693
467/* Heap Entry */ 694/* Heap Entry */
468#if EV_HEAP_CACHE_AT 695#if EV_HEAP_CACHE_AT
696 /* a heap element */
469 typedef struct { 697 typedef struct {
470 ev_tstamp at; 698 ev_tstamp at;
471 WT w; 699 WT w;
472 } ANHE; 700 } ANHE;
473 701
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 702 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 703 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 704 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 705#else
706 /* a heap element */
478 typedef WT ANHE; 707 typedef WT ANHE;
479 708
480 #define ANHE_w(he) (he) 709 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 710 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 711 #define ANHE_at_cache(he)
… …
506 735
507 static int ev_default_loop_ptr; 736 static int ev_default_loop_ptr;
508 737
509#endif 738#endif
510 739
740#if EV_FEATURE_API
741# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
742# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
743# define EV_INVOKE_PENDING invoke_cb (EV_A)
744#else
745# define EV_RELEASE_CB (void)0
746# define EV_ACQUIRE_CB (void)0
747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
748#endif
749
750#define EVBREAK_RECURSE 0x80
751
511/*****************************************************************************/ 752/*****************************************************************************/
512 753
754#ifndef EV_HAVE_EV_TIME
513ev_tstamp 755ev_tstamp
514ev_time (void) 756ev_time (void)
515{ 757{
516#if EV_USE_REALTIME 758#if EV_USE_REALTIME
759 if (expect_true (have_realtime))
760 {
517 struct timespec ts; 761 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 762 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 763 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 764 }
765#endif
766
521 struct timeval tv; 767 struct timeval tv;
522 gettimeofday (&tv, 0); 768 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 769 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 770}
771#endif
526 772
527ev_tstamp inline_size 773inline_size ev_tstamp
528get_clock (void) 774get_clock (void)
529{ 775{
530#if EV_USE_MONOTONIC 776#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 777 if (expect_true (have_monotonic))
532 { 778 {
… …
553 if (delay > 0.) 799 if (delay > 0.)
554 { 800 {
555#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
556 struct timespec ts; 802 struct timespec ts;
557 803
558 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
562#elif defined(_WIN32) 806#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
564#else 808#else
565 struct timeval tv; 809 struct timeval tv;
566 810
567 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569
570 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
574#endif 816#endif
575 } 817 }
576} 818}
577 819
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
826}
827
578/*****************************************************************************/ 828/*****************************************************************************/
579 829
580#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 830#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581 831
582int inline_size 832/* find a suitable new size for the given array, */
833/* hopefully by rounding to a nice-to-malloc size */
834inline_size int
583array_nextsize (int elem, int cur, int cnt) 835array_nextsize (int elem, int cur, int cnt)
584{ 836{
585 int ncur = cur + 1; 837 int ncur = cur + 1;
586 838
587 do 839 do
… …
604array_realloc (int elem, void *base, int *cur, int cnt) 856array_realloc (int elem, void *base, int *cur, int cnt)
605{ 857{
606 *cur = array_nextsize (elem, *cur, cnt); 858 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 859 return ev_realloc (base, elem * *cur);
608} 860}
861
862#define array_init_zero(base,count) \
863 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 864
610#define array_needsize(type,base,cur,cnt,init) \ 865#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 866 if (expect_false ((cnt) > (cur))) \
612 { \ 867 { \
613 int ocur_ = (cur); \ 868 int ocur_ = (cur); \
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 880 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 881 }
627#endif 882#endif
628 883
629#define array_free(stem, idx) \ 884#define array_free(stem, idx) \
630 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 885 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631 886
632/*****************************************************************************/ 887/*****************************************************************************/
888
889/* dummy callback for pending events */
890static void noinline
891pendingcb (EV_P_ ev_prepare *w, int revents)
892{
893}
633 894
634void noinline 895void noinline
635ev_feed_event (EV_P_ void *w, int revents) 896ev_feed_event (EV_P_ void *w, int revents)
636{ 897{
637 W w_ = (W)w; 898 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 907 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 908 pendings [pri][w_->pending - 1].events = revents;
648 } 909 }
649} 910}
650 911
651void inline_speed 912inline_speed void
913feed_reverse (EV_P_ W w)
914{
915 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
916 rfeeds [rfeedcnt++] = w;
917}
918
919inline_size void
920feed_reverse_done (EV_P_ int revents)
921{
922 do
923 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
924 while (rfeedcnt);
925}
926
927inline_speed void
652queue_events (EV_P_ W *events, int eventcnt, int type) 928queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 929{
654 int i; 930 int i;
655 931
656 for (i = 0; i < eventcnt; ++i) 932 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 933 ev_feed_event (EV_A_ events [i], type);
658} 934}
659 935
660/*****************************************************************************/ 936/*****************************************************************************/
661 937
662void inline_size 938inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 939fd_event_nocheck (EV_P_ int fd, int revents)
677{ 940{
678 ANFD *anfd = anfds + fd; 941 ANFD *anfd = anfds + fd;
679 ev_io *w; 942 ev_io *w;
680 943
681 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
685 if (ev) 948 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 949 ev_feed_event (EV_A_ (W)w, ev);
687 } 950 }
688} 951}
689 952
953/* do not submit kernel events for fds that have reify set */
954/* because that means they changed while we were polling for new events */
955inline_speed void
956fd_event (EV_P_ int fd, int revents)
957{
958 ANFD *anfd = anfds + fd;
959
960 if (expect_true (!anfd->reify))
961 fd_event_nocheck (EV_A_ fd, revents);
962}
963
690void 964void
691ev_feed_fd_event (EV_P_ int fd, int revents) 965ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 966{
693 if (fd >= 0 && fd < anfdmax) 967 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 968 fd_event_nocheck (EV_A_ fd, revents);
695} 969}
696 970
697void inline_size 971/* make sure the external fd watch events are in-sync */
972/* with the kernel/libev internal state */
973inline_size void
698fd_reify (EV_P) 974fd_reify (EV_P)
699{ 975{
700 int i; 976 int i;
701 977
702 for (i = 0; i < fdchangecnt; ++i) 978 for (i = 0; i < fdchangecnt; ++i)
703 { 979 {
704 int fd = fdchanges [i]; 980 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 981 ANFD *anfd = anfds + fd;
706 ev_io *w; 982 ev_io *w;
707 983
708 unsigned char events = 0; 984 unsigned char o_events = anfd->events;
985 unsigned char o_reify = anfd->reify;
709 986
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 987 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 988
713#if EV_SELECT_IS_WINSOCKET 989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
714 if (events) 990 if (o_reify & EV__IOFDSET)
715 { 991 {
716 unsigned long arg; 992 unsigned long arg;
717 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 993 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else
720 anfd->handle = _get_osfhandle (fd);
721 #endif
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
723 } 996 }
724#endif 997#endif
725 998
999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
726 { 1000 {
727 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify;
729
730 anfd->reify = 0;
731 anfd->events = events; 1001 anfd->events = 0;
732 1002
733 if (o_events != events || o_reify & EV_IOFDSET) 1003 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1004 anfd->events |= (unsigned char)w->events;
1005
1006 if (o_events != anfd->events)
1007 o_reify = EV__IOFDSET; /* actually |= */
1008 }
1009
1010 if (o_reify & EV__IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 1011 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 1012 }
737 1013
738 fdchangecnt = 0; 1014 fdchangecnt = 0;
739} 1015}
740 1016
741void inline_size 1017/* something about the given fd changed */
1018inline_size void
742fd_change (EV_P_ int fd, int flags) 1019fd_change (EV_P_ int fd, int flags)
743{ 1020{
744 unsigned char reify = anfds [fd].reify; 1021 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 1022 anfds [fd].reify |= flags;
746 1023
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1027 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 1028 fdchanges [fdchangecnt - 1] = fd;
752 } 1029 }
753} 1030}
754 1031
755void inline_speed 1032/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1033inline_speed void
756fd_kill (EV_P_ int fd) 1034fd_kill (EV_P_ int fd)
757{ 1035{
758 ev_io *w; 1036 ev_io *w;
759 1037
760 while ((w = (ev_io *)anfds [fd].head)) 1038 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1040 ev_io_stop (EV_A_ w);
763 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1041 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764 } 1042 }
765} 1043}
766 1044
767int inline_size 1045/* check whether the given fd is actually valid, for error recovery */
1046inline_size int
768fd_valid (int fd) 1047fd_valid (int fd)
769{ 1048{
770#ifdef _WIN32 1049#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1050 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1051#else
773 return fcntl (fd, F_GETFD) != -1; 1052 return fcntl (fd, F_GETFD) != -1;
774#endif 1053#endif
775} 1054}
776 1055
… …
794 1073
795 for (fd = anfdmax; fd--; ) 1074 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1075 if (anfds [fd].events)
797 { 1076 {
798 fd_kill (EV_A_ fd); 1077 fd_kill (EV_A_ fd);
799 return; 1078 break;
800 } 1079 }
801} 1080}
802 1081
803/* usually called after fork if backend needs to re-arm all fds from scratch */ 1082/* usually called after fork if backend needs to re-arm all fds from scratch */
804static void noinline 1083static void noinline
… …
808 1087
809 for (fd = 0; fd < anfdmax; ++fd) 1088 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1089 if (anfds [fd].events)
811 { 1090 {
812 anfds [fd].events = 0; 1091 anfds [fd].events = 0;
1092 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1093 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1094 }
815} 1095}
816 1096
1097/* used to prepare libev internal fd's */
1098/* this is not fork-safe */
1099inline_speed void
1100fd_intern (int fd)
1101{
1102#ifdef _WIN32
1103 unsigned long arg = 1;
1104 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1105#else
1106 fcntl (fd, F_SETFD, FD_CLOEXEC);
1107 fcntl (fd, F_SETFL, O_NONBLOCK);
1108#endif
1109}
1110
817/*****************************************************************************/ 1111/*****************************************************************************/
818 1112
819/* 1113/*
820 * the heap functions want a real array index. array index 0 uis guaranteed to not 1114 * the heap functions want a real array index. array index 0 is guaranteed to not
821 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1115 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
822 * the branching factor of the d-tree. 1116 * the branching factor of the d-tree.
823 */ 1117 */
824 1118
825/* 1119/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1128#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1129#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1130#define UPHEAP_DONE(p,k) ((p) == (k))
837 1131
838/* away from the root */ 1132/* away from the root */
839void inline_speed 1133inline_speed void
840downheap (ANHE *heap, int N, int k) 1134downheap (ANHE *heap, int N, int k)
841{ 1135{
842 ANHE he = heap [k]; 1136 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1137 ANHE *E = heap + N + HEAP0;
844 1138
… …
884#define HEAP0 1 1178#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1179#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1180#define UPHEAP_DONE(p,k) (!(p))
887 1181
888/* away from the root */ 1182/* away from the root */
889void inline_speed 1183inline_speed void
890downheap (ANHE *heap, int N, int k) 1184downheap (ANHE *heap, int N, int k)
891{ 1185{
892 ANHE he = heap [k]; 1186 ANHE he = heap [k];
893 1187
894 for (;;) 1188 for (;;)
895 { 1189 {
896 int c = k << 1; 1190 int c = k << 1;
897 1191
898 if (c > N + HEAP0 - 1) 1192 if (c >= N + HEAP0)
899 break; 1193 break;
900 1194
901 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1195 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902 ? 1 : 0; 1196 ? 1 : 0;
903 1197
… …
914 ev_active (ANHE_w (he)) = k; 1208 ev_active (ANHE_w (he)) = k;
915} 1209}
916#endif 1210#endif
917 1211
918/* towards the root */ 1212/* towards the root */
919void inline_speed 1213inline_speed void
920upheap (ANHE *heap, int k) 1214upheap (ANHE *heap, int k)
921{ 1215{
922 ANHE he = heap [k]; 1216 ANHE he = heap [k];
923 1217
924 for (;;) 1218 for (;;)
… …
935 1229
936 heap [k] = he; 1230 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1231 ev_active (ANHE_w (he)) = k;
938} 1232}
939 1233
940void inline_size 1234/* move an element suitably so it is in a correct place */
1235inline_size void
941adjustheap (ANHE *heap, int N, int k) 1236adjustheap (ANHE *heap, int N, int k)
942{ 1237{
943 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1238 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944 upheap (heap, k); 1239 upheap (heap, k);
945 else 1240 else
946 downheap (heap, N, k); 1241 downheap (heap, N, k);
947} 1242}
948 1243
949/* rebuild the heap: this function is used only once and executed rarely */ 1244/* rebuild the heap: this function is used only once and executed rarely */
950void inline_size 1245inline_size void
951reheap (ANHE *heap, int N) 1246reheap (ANHE *heap, int N)
952{ 1247{
953 int i; 1248 int i;
954 1249
955 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1250 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
958 upheap (heap, i + HEAP0); 1253 upheap (heap, i + HEAP0);
959} 1254}
960 1255
961/*****************************************************************************/ 1256/*****************************************************************************/
962 1257
1258/* associate signal watchers to a signal signal */
963typedef struct 1259typedef struct
964{ 1260{
1261 EV_ATOMIC_T pending;
1262#if EV_MULTIPLICITY
1263 EV_P;
1264#endif
965 WL head; 1265 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1266} ANSIG;
968 1267
969static ANSIG *signals; 1268static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1269
986/*****************************************************************************/ 1270/*****************************************************************************/
987 1271
988void inline_speed 1272#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1273
1000static void noinline 1274static void noinline
1001evpipe_init (EV_P) 1275evpipe_init (EV_P)
1002{ 1276{
1003 if (!ev_is_active (&pipeev)) 1277 if (!ev_is_active (&pipe_w))
1004 { 1278 {
1005#if EV_USE_EVENTFD 1279# if EV_USE_EVENTFD
1280 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1281 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1282 evfd = eventfd (0, 0);
1283
1284 if (evfd >= 0)
1007 { 1285 {
1008 evpipe [0] = -1; 1286 evpipe [0] = -1;
1009 fd_intern (evfd); 1287 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1288 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1289 }
1012 else 1290 else
1013#endif 1291# endif
1014 { 1292 {
1015 while (pipe (evpipe)) 1293 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1294 ev_syserr ("(libev) error creating signal/async pipe");
1017 1295
1018 fd_intern (evpipe [0]); 1296 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1297 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1298 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1299 }
1022 1300
1023 ev_io_start (EV_A_ &pipeev); 1301 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1302 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1303 }
1026} 1304}
1027 1305
1028void inline_size 1306inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1307evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1308{
1031 if (!*flag) 1309 if (!*flag)
1032 { 1310 {
1033 int old_errno = errno; /* save errno because write might clobber it */ 1311 int old_errno = errno; /* save errno because write might clobber it */
1312 char dummy;
1034 1313
1035 *flag = 1; 1314 *flag = 1;
1036 1315
1037#if EV_USE_EVENTFD 1316#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1317 if (evfd >= 0)
… …
1040 uint64_t counter = 1; 1319 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1320 write (evfd, &counter, sizeof (uint64_t));
1042 } 1321 }
1043 else 1322 else
1044#endif 1323#endif
1324 /* win32 people keep sending patches that change this write() to send() */
1325 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1326 /* so when you think this write should be a send instead, please find out */
1327 /* where your send() is from - it's definitely not the microsoft send, and */
1328 /* tell me. thank you. */
1045 write (evpipe [1], &old_errno, 1); 1329 write (evpipe [1], &dummy, 1);
1046 1330
1047 errno = old_errno; 1331 errno = old_errno;
1048 } 1332 }
1049} 1333}
1050 1334
1335/* called whenever the libev signal pipe */
1336/* got some events (signal, async) */
1051static void 1337static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1338pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1339{
1340 int i;
1341
1054#if EV_USE_EVENTFD 1342#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1343 if (evfd >= 0)
1056 { 1344 {
1057 uint64_t counter; 1345 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1346 read (evfd, &counter, sizeof (uint64_t));
1059 } 1347 }
1060 else 1348 else
1061#endif 1349#endif
1062 { 1350 {
1063 char dummy; 1351 char dummy;
1352 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 read (evpipe [0], &dummy, 1); 1353 read (evpipe [0], &dummy, 1);
1065 } 1354 }
1066 1355
1067 if (gotsig && ev_is_default_loop (EV_A)) 1356#if EV_SIGNAL_ENABLE
1357 if (sig_pending)
1068 { 1358 {
1069 int signum; 1359 sig_pending = 0;
1070 gotsig = 0;
1071 1360
1072 for (signum = signalmax; signum--; ) 1361 for (i = EV_NSIG - 1; i--; )
1073 if (signals [signum].gotsig) 1362 if (expect_false (signals [i].pending))
1074 ev_feed_signal_event (EV_A_ signum + 1); 1363 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1364 }
1365#endif
1076 1366
1077#if EV_ASYNC_ENABLE 1367#if EV_ASYNC_ENABLE
1078 if (gotasync) 1368 if (async_pending)
1079 { 1369 {
1080 int i; 1370 async_pending = 0;
1081 gotasync = 0;
1082 1371
1083 for (i = asynccnt; i--; ) 1372 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1373 if (asyncs [i]->sent)
1085 { 1374 {
1086 asyncs [i]->sent = 0; 1375 asyncs [i]->sent = 0;
… …
1090#endif 1379#endif
1091} 1380}
1092 1381
1093/*****************************************************************************/ 1382/*****************************************************************************/
1094 1383
1384void
1385ev_feed_signal (int signum)
1386{
1387#if EV_MULTIPLICITY
1388 EV_P = signals [signum - 1].loop;
1389
1390 if (!EV_A)
1391 return;
1392#endif
1393
1394 signals [signum - 1].pending = 1;
1395 evpipe_write (EV_A_ &sig_pending);
1396}
1397
1095static void 1398static void
1096ev_sighandler (int signum) 1399ev_sighandler (int signum)
1097{ 1400{
1098#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct;
1100#endif
1101
1102#if _WIN32 1401#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1402 signal (signum, ev_sighandler);
1104#endif 1403#endif
1105 1404
1106 signals [signum - 1].gotsig = 1; 1405 ev_feed_signal (signum);
1107 evpipe_write (EV_A_ &gotsig);
1108} 1406}
1109 1407
1110void noinline 1408void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1409ev_feed_signal_event (EV_P_ int signum)
1112{ 1410{
1113 WL w; 1411 WL w;
1114 1412
1413 if (expect_false (signum <= 0 || signum > EV_NSIG))
1414 return;
1415
1416 --signum;
1417
1115#if EV_MULTIPLICITY 1418#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1419 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1420 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1421
1119 --signum; 1422 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1423 return;
1424#endif
1123 1425
1124 signals [signum].gotsig = 0; 1426 signals [signum].pending = 0;
1125 1427
1126 for (w = signals [signum].head; w; w = w->next) 1428 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1429 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1430}
1129 1431
1432#if EV_USE_SIGNALFD
1433static void
1434sigfdcb (EV_P_ ev_io *iow, int revents)
1435{
1436 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1437
1438 for (;;)
1439 {
1440 ssize_t res = read (sigfd, si, sizeof (si));
1441
1442 /* not ISO-C, as res might be -1, but works with SuS */
1443 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1444 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1445
1446 if (res < (ssize_t)sizeof (si))
1447 break;
1448 }
1449}
1450#endif
1451
1452#endif
1453
1130/*****************************************************************************/ 1454/*****************************************************************************/
1131 1455
1456#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1457static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1458
1136static ev_signal childev; 1459static ev_signal childev;
1137 1460
1138#ifndef WIFCONTINUED 1461#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1462# define WIFCONTINUED(status) 0
1140#endif 1463#endif
1141 1464
1142void inline_speed 1465/* handle a single child status event */
1466inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1467child_reap (EV_P_ int chain, int pid, int status)
1144{ 1468{
1145 ev_child *w; 1469 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1470 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1471
1148 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1472 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1149 { 1473 {
1150 if ((w->pid == pid || !w->pid) 1474 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1475 && (!traced || (w->flags & 1)))
1152 { 1476 {
1153 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1477 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1160 1484
1161#ifndef WCONTINUED 1485#ifndef WCONTINUED
1162# define WCONTINUED 0 1486# define WCONTINUED 0
1163#endif 1487#endif
1164 1488
1489/* called on sigchld etc., calls waitpid */
1165static void 1490static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1491childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1492{
1168 int pid, status; 1493 int pid, status;
1169 1494
… …
1177 /* make sure we are called again until all children have been reaped */ 1502 /* make sure we are called again until all children have been reaped */
1178 /* we need to do it this way so that the callback gets called before we continue */ 1503 /* we need to do it this way so that the callback gets called before we continue */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1504 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 1505
1181 child_reap (EV_A_ pid, pid, status); 1506 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 1507 if ((EV_PID_HASHSIZE) > 1)
1183 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1508 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1184} 1509}
1185 1510
1186#endif 1511#endif
1187 1512
1188/*****************************************************************************/ 1513/*****************************************************************************/
1189 1514
1515#if EV_USE_IOCP
1516# include "ev_iocp.c"
1517#endif
1190#if EV_USE_PORT 1518#if EV_USE_PORT
1191# include "ev_port.c" 1519# include "ev_port.c"
1192#endif 1520#endif
1193#if EV_USE_KQUEUE 1521#if EV_USE_KQUEUE
1194# include "ev_kqueue.c" 1522# include "ev_kqueue.c"
… …
1250 /* kqueue is borked on everything but netbsd apparently */ 1578 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 1579 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 1580 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1581#endif
1254#ifdef __APPLE__ 1582#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1583 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 1584 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1585 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1586#endif
1587#ifdef __FreeBSD__
1588 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1257#endif 1589#endif
1258 1590
1259 return flags; 1591 return flags;
1260} 1592}
1261 1593
… …
1263ev_embeddable_backends (void) 1595ev_embeddable_backends (void)
1264{ 1596{
1265 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1597 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1266 1598
1267 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1599 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1268 /* please fix it and tell me how to detect the fix */ 1600 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1269 flags &= ~EVBACKEND_EPOLL; 1601 flags &= ~EVBACKEND_EPOLL;
1270 1602
1271 return flags; 1603 return flags;
1272} 1604}
1273 1605
1274unsigned int 1606unsigned int
1275ev_backend (EV_P) 1607ev_backend (EV_P)
1276{ 1608{
1277 return backend; 1609 return backend;
1278} 1610}
1279 1611
1612#if EV_FEATURE_API
1280unsigned int 1613unsigned int
1281ev_loop_count (EV_P) 1614ev_iteration (EV_P)
1282{ 1615{
1283 return loop_count; 1616 return loop_count;
1284} 1617}
1285 1618
1619unsigned int
1620ev_depth (EV_P)
1621{
1622 return loop_depth;
1623}
1624
1286void 1625void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1626ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 1627{
1289 io_blocktime = interval; 1628 io_blocktime = interval;
1290} 1629}
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1632ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1633{
1295 timeout_blocktime = interval; 1634 timeout_blocktime = interval;
1296} 1635}
1297 1636
1637void
1638ev_set_userdata (EV_P_ void *data)
1639{
1640 userdata = data;
1641}
1642
1643void *
1644ev_userdata (EV_P)
1645{
1646 return userdata;
1647}
1648
1649void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1650{
1651 invoke_cb = invoke_pending_cb;
1652}
1653
1654void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1655{
1656 release_cb = release;
1657 acquire_cb = acquire;
1658}
1659#endif
1660
1661/* initialise a loop structure, must be zero-initialised */
1298static void noinline 1662static void noinline
1299loop_init (EV_P_ unsigned int flags) 1663loop_init (EV_P_ unsigned int flags)
1300{ 1664{
1301 if (!backend) 1665 if (!backend)
1302 { 1666 {
1667 origflags = flags;
1668
1669#if EV_USE_REALTIME
1670 if (!have_realtime)
1671 {
1672 struct timespec ts;
1673
1674 if (!clock_gettime (CLOCK_REALTIME, &ts))
1675 have_realtime = 1;
1676 }
1677#endif
1678
1303#if EV_USE_MONOTONIC 1679#if EV_USE_MONOTONIC
1680 if (!have_monotonic)
1304 { 1681 {
1305 struct timespec ts; 1682 struct timespec ts;
1683
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1684 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1685 have_monotonic = 1;
1308 } 1686 }
1309#endif 1687#endif
1688
1689 /* pid check not overridable via env */
1690#ifndef _WIN32
1691 if (flags & EVFLAG_FORKCHECK)
1692 curpid = getpid ();
1693#endif
1694
1695 if (!(flags & EVFLAG_NOENV)
1696 && !enable_secure ()
1697 && getenv ("LIBEV_FLAGS"))
1698 flags = atoi (getenv ("LIBEV_FLAGS"));
1310 1699
1311 ev_rt_now = ev_time (); 1700 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1701 mn_now = get_clock ();
1313 now_floor = mn_now; 1702 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now; 1703 rtmn_diff = ev_rt_now - mn_now;
1704#if EV_FEATURE_API
1705 invoke_cb = ev_invoke_pending;
1706#endif
1315 1707
1316 io_blocktime = 0.; 1708 io_blocktime = 0.;
1317 timeout_blocktime = 0.; 1709 timeout_blocktime = 0.;
1318 backend = 0; 1710 backend = 0;
1319 backend_fd = -1; 1711 backend_fd = -1;
1320 gotasync = 0; 1712 sig_pending = 0;
1713#if EV_ASYNC_ENABLE
1714 async_pending = 0;
1715#endif
1321#if EV_USE_INOTIFY 1716#if EV_USE_INOTIFY
1322 fs_fd = -2; 1717 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323#endif 1718#endif
1324 1719#if EV_USE_SIGNALFD
1325 /* pid check not overridable via env */ 1720 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK)
1328 curpid = getpid ();
1329#endif 1721#endif
1330 1722
1331 if (!(flags & EVFLAG_NOENV) 1723 if (!(flags & EVBACKEND_MASK))
1332 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS"));
1335
1336 if (!(flags & 0x0000ffffU))
1337 flags |= ev_recommended_backends (); 1724 flags |= ev_recommended_backends ();
1338 1725
1726#if EV_USE_IOCP
1727 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1728#endif
1339#if EV_USE_PORT 1729#if EV_USE_PORT
1340 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1730 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1341#endif 1731#endif
1342#if EV_USE_KQUEUE 1732#if EV_USE_KQUEUE
1343 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1733 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1350#endif 1740#endif
1351#if EV_USE_SELECT 1741#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1742 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 1743#endif
1354 1744
1745 ev_prepare_init (&pending_w, pendingcb);
1746
1747#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 1748 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 1749 ev_set_priority (&pipe_w, EV_MAXPRI);
1750#endif
1357 } 1751 }
1358} 1752}
1359 1753
1360static void noinline 1754/* free up a loop structure */
1755void
1361loop_destroy (EV_P) 1756ev_loop_destroy (EV_P)
1362{ 1757{
1363 int i; 1758 int i;
1364 1759
1760#if EV_MULTIPLICITY
1761 /* mimic free (0) */
1762 if (!EV_A)
1763 return;
1764#endif
1765
1766#if EV_CLEANUP_ENABLE
1767 /* queue cleanup watchers (and execute them) */
1768 if (expect_false (cleanupcnt))
1769 {
1770 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1771 EV_INVOKE_PENDING;
1772 }
1773#endif
1774
1775#if EV_CHILD_ENABLE
1776 if (ev_is_active (&childev))
1777 {
1778 ev_ref (EV_A); /* child watcher */
1779 ev_signal_stop (EV_A_ &childev);
1780 }
1781#endif
1782
1365 if (ev_is_active (&pipeev)) 1783 if (ev_is_active (&pipe_w))
1366 { 1784 {
1367 ev_ref (EV_A); /* signal watcher */ 1785 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 1786 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 1787
1370#if EV_USE_EVENTFD 1788#if EV_USE_EVENTFD
1371 if (evfd >= 0) 1789 if (evfd >= 0)
1372 close (evfd); 1790 close (evfd);
1373#endif 1791#endif
1374 1792
1375 if (evpipe [0] >= 0) 1793 if (evpipe [0] >= 0)
1376 { 1794 {
1377 close (evpipe [0]); 1795 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 1796 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 1797 }
1380 } 1798 }
1799
1800#if EV_USE_SIGNALFD
1801 if (ev_is_active (&sigfd_w))
1802 close (sigfd);
1803#endif
1381 1804
1382#if EV_USE_INOTIFY 1805#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 1806 if (fs_fd >= 0)
1384 close (fs_fd); 1807 close (fs_fd);
1385#endif 1808#endif
1386 1809
1387 if (backend_fd >= 0) 1810 if (backend_fd >= 0)
1388 close (backend_fd); 1811 close (backend_fd);
1389 1812
1813#if EV_USE_IOCP
1814 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1815#endif
1390#if EV_USE_PORT 1816#if EV_USE_PORT
1391 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1817 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1392#endif 1818#endif
1393#if EV_USE_KQUEUE 1819#if EV_USE_KQUEUE
1394 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1820 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1409#if EV_IDLE_ENABLE 1835#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 1836 array_free (idle, [i]);
1411#endif 1837#endif
1412 } 1838 }
1413 1839
1414 ev_free (anfds); anfdmax = 0; 1840 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 1841
1416 /* have to use the microsoft-never-gets-it-right macro */ 1842 /* have to use the microsoft-never-gets-it-right macro */
1843 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 1844 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1845 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1846#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1847 array_free (periodic, EMPTY);
1421#endif 1848#endif
1422#if EV_FORK_ENABLE 1849#if EV_FORK_ENABLE
1423 array_free (fork, EMPTY); 1850 array_free (fork, EMPTY);
1424#endif 1851#endif
1852#if EV_CLEANUP_ENABLE
1853 array_free (cleanup, EMPTY);
1854#endif
1425 array_free (prepare, EMPTY); 1855 array_free (prepare, EMPTY);
1426 array_free (check, EMPTY); 1856 array_free (check, EMPTY);
1427#if EV_ASYNC_ENABLE 1857#if EV_ASYNC_ENABLE
1428 array_free (async, EMPTY); 1858 array_free (async, EMPTY);
1429#endif 1859#endif
1430 1860
1431 backend = 0; 1861 backend = 0;
1862
1863#if EV_MULTIPLICITY
1864 if (ev_is_default_loop (EV_A))
1865#endif
1866 ev_default_loop_ptr = 0;
1867#if EV_MULTIPLICITY
1868 else
1869 ev_free (EV_A);
1870#endif
1432} 1871}
1433 1872
1434#if EV_USE_INOTIFY 1873#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1874inline_size void infy_fork (EV_P);
1436#endif 1875#endif
1437 1876
1438void inline_size 1877inline_size void
1439loop_fork (EV_P) 1878loop_fork (EV_P)
1440{ 1879{
1441#if EV_USE_PORT 1880#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1881 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1882#endif
… …
1449#endif 1888#endif
1450#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 1890 infy_fork (EV_A);
1452#endif 1891#endif
1453 1892
1454 if (ev_is_active (&pipeev)) 1893 if (ev_is_active (&pipe_w))
1455 { 1894 {
1456 /* this "locks" the handlers against writing to the pipe */ 1895 /* this "locks" the handlers against writing to the pipe */
1457 /* while we modify the fd vars */ 1896 /* while we modify the fd vars */
1458 gotsig = 1; 1897 sig_pending = 1;
1459#if EV_ASYNC_ENABLE 1898#if EV_ASYNC_ENABLE
1460 gotasync = 1; 1899 async_pending = 1;
1461#endif 1900#endif
1462 1901
1463 ev_ref (EV_A); 1902 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 1903 ev_io_stop (EV_A_ &pipe_w);
1465 1904
1466#if EV_USE_EVENTFD 1905#if EV_USE_EVENTFD
1467 if (evfd >= 0) 1906 if (evfd >= 0)
1468 close (evfd); 1907 close (evfd);
1469#endif 1908#endif
1470 1909
1471 if (evpipe [0] >= 0) 1910 if (evpipe [0] >= 0)
1472 { 1911 {
1473 close (evpipe [0]); 1912 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 1913 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 1914 }
1476 1915
1916#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 1917 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 1918 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 1919 pipecb (EV_A_ &pipe_w, EV_READ);
1920#endif
1480 } 1921 }
1481 1922
1482 postfork = 0; 1923 postfork = 0;
1483} 1924}
1484 1925
1485#if EV_MULTIPLICITY 1926#if EV_MULTIPLICITY
1486 1927
1487struct ev_loop * 1928struct ev_loop *
1488ev_loop_new (unsigned int flags) 1929ev_loop_new (unsigned int flags)
1489{ 1930{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1931 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 1932
1492 memset (loop, 0, sizeof (struct ev_loop)); 1933 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 1934 loop_init (EV_A_ flags);
1495 1935
1496 if (ev_backend (EV_A)) 1936 if (ev_backend (EV_A))
1497 return loop; 1937 return EV_A;
1498 1938
1939 ev_free (EV_A);
1499 return 0; 1940 return 0;
1500} 1941}
1501 1942
1502void 1943#endif /* multiplicity */
1503ev_loop_destroy (EV_P)
1504{
1505 loop_destroy (EV_A);
1506 ev_free (loop);
1507}
1508
1509void
1510ev_loop_fork (EV_P)
1511{
1512 postfork = 1; /* must be in line with ev_default_fork */
1513}
1514 1944
1515#if EV_VERIFY 1945#if EV_VERIFY
1516static void noinline 1946static void noinline
1517verify_watcher (EV_P_ W w) 1947verify_watcher (EV_P_ W w)
1518{ 1948{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1949 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1950
1521 if (w->pending) 1951 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1952 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 1953}
1524 1954
1525static void noinline 1955static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1956verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1957{
1528 int i; 1958 int i;
1529 1959
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1960 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1961 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1962 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1963 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1964 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 1965
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1966 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1967 }
1538} 1968}
1539 1969
1540static void noinline 1970static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1971array_verify (EV_P_ W *ws, int cnt)
1542{ 1972{
1543 while (cnt--) 1973 while (cnt--)
1544 { 1974 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1975 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1976 verify_watcher (EV_A_ ws [cnt]);
1547 } 1977 }
1548} 1978}
1549#endif 1979#endif
1550 1980
1981#if EV_FEATURE_API
1551void 1982void
1552ev_loop_verify (EV_P) 1983ev_verify (EV_P)
1553{ 1984{
1554#if EV_VERIFY 1985#if EV_VERIFY
1555 int i; 1986 int i;
1556 WL w; 1987 WL w;
1557 1988
1558 assert (activecnt >= -1); 1989 assert (activecnt >= -1);
1559 1990
1560 assert (fdchangemax >= fdchangecnt); 1991 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1992 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1993 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1994
1564 assert (anfdmax >= 0); 1995 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1996 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1997 for (w = anfds [i].head; w; w = w->next)
1567 { 1998 {
1568 verify_watcher (EV_A_ (W)w); 1999 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2000 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2001 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 2002 }
1572 2003
1573 assert (timermax >= timercnt); 2004 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 2005 verify_heap (EV_A_ timers, timercnt);
1575 2006
… …
1591#if EV_FORK_ENABLE 2022#if EV_FORK_ENABLE
1592 assert (forkmax >= forkcnt); 2023 assert (forkmax >= forkcnt);
1593 array_verify (EV_A_ (W *)forks, forkcnt); 2024 array_verify (EV_A_ (W *)forks, forkcnt);
1594#endif 2025#endif
1595 2026
2027#if EV_CLEANUP_ENABLE
2028 assert (cleanupmax >= cleanupcnt);
2029 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2030#endif
2031
1596#if EV_ASYNC_ENABLE 2032#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 2033 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 2034 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 2035#endif
1600 2036
2037#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 2038 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 2039 array_verify (EV_A_ (W *)prepares, preparecnt);
2040#endif
1603 2041
2042#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 2043 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 2044 array_verify (EV_A_ (W *)checks, checkcnt);
2045#endif
1606 2046
1607# if 0 2047# if 0
2048#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2049 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2050 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2051#endif
1610# endif 2052# endif
1611#endif 2053#endif
1612} 2054}
1613 2055#endif
1614#endif /* multiplicity */
1615 2056
1616#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
1617struct ev_loop * 2058struct ev_loop *
1618ev_default_loop_init (unsigned int flags)
1619#else 2059#else
1620int 2060int
2061#endif
1621ev_default_loop (unsigned int flags) 2062ev_default_loop (unsigned int flags)
1622#endif
1623{ 2063{
1624 if (!ev_default_loop_ptr) 2064 if (!ev_default_loop_ptr)
1625 { 2065 {
1626#if EV_MULTIPLICITY 2066#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2067 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 2068#else
1629 ev_default_loop_ptr = 1; 2069 ev_default_loop_ptr = 1;
1630#endif 2070#endif
1631 2071
1632 loop_init (EV_A_ flags); 2072 loop_init (EV_A_ flags);
1633 2073
1634 if (ev_backend (EV_A)) 2074 if (ev_backend (EV_A))
1635 { 2075 {
1636#ifndef _WIN32 2076#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 2077 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 2078 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 2079 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2080 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 2081#endif
… …
1646 2086
1647 return ev_default_loop_ptr; 2087 return ev_default_loop_ptr;
1648} 2088}
1649 2089
1650void 2090void
1651ev_default_destroy (void) 2091ev_loop_fork (EV_P)
1652{ 2092{
1653#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr;
1655#endif
1656
1657#ifndef _WIN32
1658 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev);
1660#endif
1661
1662 loop_destroy (EV_A);
1663}
1664
1665void
1666ev_default_fork (void)
1667{
1668#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr;
1670#endif
1671
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2093 postfork = 1; /* must be in line with ev_default_fork */
1674} 2094}
1675 2095
1676/*****************************************************************************/ 2096/*****************************************************************************/
1677 2097
1678void 2098void
1679ev_invoke (EV_P_ void *w, int revents) 2099ev_invoke (EV_P_ void *w, int revents)
1680{ 2100{
1681 EV_CB_INVOKE ((W)w, revents); 2101 EV_CB_INVOKE ((W)w, revents);
1682} 2102}
1683 2103
1684void inline_speed 2104unsigned int
1685call_pending (EV_P) 2105ev_pending_count (EV_P)
2106{
2107 int pri;
2108 unsigned int count = 0;
2109
2110 for (pri = NUMPRI; pri--; )
2111 count += pendingcnt [pri];
2112
2113 return count;
2114}
2115
2116void noinline
2117ev_invoke_pending (EV_P)
1686{ 2118{
1687 int pri; 2119 int pri;
1688 2120
1689 for (pri = NUMPRI; pri--; ) 2121 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2122 while (pendingcnt [pri])
1691 { 2123 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2124 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2125
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1697
1698 p->w->pending = 0; 2126 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2127 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2128 EV_FREQUENT_CHECK;
1701 }
1702 } 2129 }
1703} 2130}
1704 2131
1705#if EV_IDLE_ENABLE 2132#if EV_IDLE_ENABLE
1706void inline_size 2133/* make idle watchers pending. this handles the "call-idle */
2134/* only when higher priorities are idle" logic */
2135inline_size void
1707idle_reify (EV_P) 2136idle_reify (EV_P)
1708{ 2137{
1709 if (expect_false (idleall)) 2138 if (expect_false (idleall))
1710 { 2139 {
1711 int pri; 2140 int pri;
… …
1723 } 2152 }
1724 } 2153 }
1725} 2154}
1726#endif 2155#endif
1727 2156
1728void inline_size 2157/* make timers pending */
2158inline_size void
1729timers_reify (EV_P) 2159timers_reify (EV_P)
1730{ 2160{
1731 EV_FREQUENT_CHECK; 2161 EV_FREQUENT_CHECK;
1732 2162
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2163 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2164 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2165 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 2166 {
2167 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2168
2169 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2170
2171 /* first reschedule or stop timer */
2172 if (w->repeat)
2173 {
1742 ev_at (w) += w->repeat; 2174 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2175 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2176 ev_at (w) = mn_now;
1745 2177
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2178 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2179
1748 ANHE_at_cache (timers [HEAP0]); 2180 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2181 downheap (timers, timercnt, HEAP0);
2182 }
2183 else
2184 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2185
2186 EV_FREQUENT_CHECK;
2187 feed_reverse (EV_A_ (W)w);
1750 } 2188 }
1751 else 2189 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2190
1754 EV_FREQUENT_CHECK; 2191 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2192 }
1757} 2193}
1758 2194
1759#if EV_PERIODIC_ENABLE 2195#if EV_PERIODIC_ENABLE
1760void inline_size 2196/* make periodics pending */
2197inline_size void
1761periodics_reify (EV_P) 2198periodics_reify (EV_P)
1762{ 2199{
1763 EV_FREQUENT_CHECK; 2200 EV_FREQUENT_CHECK;
1764 2201
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2202 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2203 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2204 int feed_count = 0;
1768 2205
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2206 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2207 {
2208 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2209
2210 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2211
2212 /* first reschedule or stop timer */
2213 if (w->reschedule_cb)
2214 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2215 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2216
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2217 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2218
1778 ANHE_at_cache (periodics [HEAP0]); 2219 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2220 downheap (periodics, periodiccnt, HEAP0);
2221 }
2222 else if (w->interval)
2223 {
2224 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2225 /* if next trigger time is not sufficiently in the future, put it there */
2226 /* this might happen because of floating point inexactness */
2227 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2228 {
2229 ev_at (w) += w->interval;
2230
2231 /* if interval is unreasonably low we might still have a time in the past */
2232 /* so correct this. this will make the periodic very inexact, but the user */
2233 /* has effectively asked to get triggered more often than possible */
2234 if (ev_at (w) < ev_rt_now)
2235 ev_at (w) = ev_rt_now;
2236 }
2237
2238 ANHE_at_cache (periodics [HEAP0]);
2239 downheap (periodics, periodiccnt, HEAP0);
2240 }
2241 else
2242 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2243
2244 EV_FREQUENT_CHECK;
2245 feed_reverse (EV_A_ (W)w);
1780 } 2246 }
1781 else if (w->interval) 2247 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2248
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2249 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2250 }
1806} 2251}
1807 2252
2253/* simply recalculate all periodics */
2254/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2255static void noinline
1809periodics_reschedule (EV_P) 2256periodics_reschedule (EV_P)
1810{ 2257{
1811 int i; 2258 int i;
1812 2259
… …
1825 2272
1826 reheap (periodics, periodiccnt); 2273 reheap (periodics, periodiccnt);
1827} 2274}
1828#endif 2275#endif
1829 2276
1830void inline_speed 2277/* adjust all timers by a given offset */
2278static void noinline
2279timers_reschedule (EV_P_ ev_tstamp adjust)
2280{
2281 int i;
2282
2283 for (i = 0; i < timercnt; ++i)
2284 {
2285 ANHE *he = timers + i + HEAP0;
2286 ANHE_w (*he)->at += adjust;
2287 ANHE_at_cache (*he);
2288 }
2289}
2290
2291/* fetch new monotonic and realtime times from the kernel */
2292/* also detect if there was a timejump, and act accordingly */
2293inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2294time_update (EV_P_ ev_tstamp max_block)
1832{ 2295{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2296#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2297 if (expect_true (have_monotonic))
1837 { 2298 {
2299 int i;
1838 ev_tstamp odiff = rtmn_diff; 2300 ev_tstamp odiff = rtmn_diff;
1839 2301
1840 mn_now = get_clock (); 2302 mn_now = get_clock ();
1841 2303
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2304 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1868 ev_rt_now = ev_time (); 2330 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2331 mn_now = get_clock ();
1870 now_floor = mn_now; 2332 now_floor = mn_now;
1871 } 2333 }
1872 2334
2335 /* no timer adjustment, as the monotonic clock doesn't jump */
2336 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2337# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2338 periodics_reschedule (EV_A);
1875# endif 2339# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2340 }
1879 else 2341 else
1880#endif 2342#endif
1881 { 2343 {
1882 ev_rt_now = ev_time (); 2344 ev_rt_now = ev_time ();
1883 2345
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2346 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2347 {
2348 /* adjust timers. this is easy, as the offset is the same for all of them */
2349 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2350#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2351 periodics_reschedule (EV_A);
1888#endif 2352#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2353 }
1897 2354
1898 mn_now = ev_rt_now; 2355 mn_now = ev_rt_now;
1899 } 2356 }
1900} 2357}
1901 2358
1902void 2359void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2360ev_run (EV_P_ int flags)
1924{ 2361{
2362#if EV_FEATURE_API
2363 ++loop_depth;
2364#endif
2365
2366 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2367
1925 loop_done = EVUNLOOP_CANCEL; 2368 loop_done = EVBREAK_CANCEL;
1926 2369
1927 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2370 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928 2371
1929 do 2372 do
1930 { 2373 {
1931#if EV_VERIFY >= 2 2374#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2375 ev_verify (EV_A);
1933#endif 2376#endif
1934 2377
1935#ifndef _WIN32 2378#ifndef _WIN32
1936 if (expect_false (curpid)) /* penalise the forking check even more */ 2379 if (expect_false (curpid)) /* penalise the forking check even more */
1937 if (expect_false (getpid () != curpid)) 2380 if (expect_false (getpid () != curpid))
… …
1945 /* we might have forked, so queue fork handlers */ 2388 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2389 if (expect_false (postfork))
1947 if (forkcnt) 2390 if (forkcnt)
1948 { 2391 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2392 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2393 EV_INVOKE_PENDING;
1951 } 2394 }
1952#endif 2395#endif
1953 2396
2397#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2398 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2399 if (expect_false (preparecnt))
1956 { 2400 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2401 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2402 EV_INVOKE_PENDING;
1959 } 2403 }
2404#endif
1960 2405
1961 if (expect_false (!activecnt)) 2406 if (expect_false (loop_done))
1962 break; 2407 break;
1963 2408
1964 /* we might have forked, so reify kernel state if necessary */ 2409 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2410 if (expect_false (postfork))
1966 loop_fork (EV_A); 2411 loop_fork (EV_A);
… …
1971 /* calculate blocking time */ 2416 /* calculate blocking time */
1972 { 2417 {
1973 ev_tstamp waittime = 0.; 2418 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2419 ev_tstamp sleeptime = 0.;
1975 2420
2421 /* remember old timestamp for io_blocktime calculation */
2422 ev_tstamp prev_mn_now = mn_now;
2423
2424 /* update time to cancel out callback processing overhead */
2425 time_update (EV_A_ 1e100);
2426
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2427 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1977 { 2428 {
1978 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100);
1980
1981 waittime = MAX_BLOCKTIME; 2429 waittime = MAX_BLOCKTIME;
1982 2430
1983 if (timercnt) 2431 if (timercnt)
1984 { 2432 {
1985 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2433 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
1992 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2440 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1993 if (waittime > to) waittime = to; 2441 if (waittime > to) waittime = to;
1994 } 2442 }
1995#endif 2443#endif
1996 2444
2445 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 2446 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 2447 waittime = timeout_blocktime;
1999 2448
2000 sleeptime = waittime - backend_fudge; 2449 /* extra check because io_blocktime is commonly 0 */
2001
2002 if (expect_true (sleeptime > io_blocktime)) 2450 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 2451 {
2452 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2453
2454 if (sleeptime > waittime - backend_fudge)
2455 sleeptime = waittime - backend_fudge;
2456
2457 if (expect_true (sleeptime > 0.))
2458 {
2007 ev_sleep (sleeptime); 2459 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 2460 waittime -= sleeptime;
2461 }
2009 } 2462 }
2010 } 2463 }
2011 2464
2465#if EV_FEATURE_API
2012 ++loop_count; 2466 ++loop_count;
2467#endif
2468 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2013 backend_poll (EV_A_ waittime); 2469 backend_poll (EV_A_ waittime);
2470 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2014 2471
2015 /* update ev_rt_now, do magic */ 2472 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 2473 time_update (EV_A_ waittime + sleeptime);
2017 } 2474 }
2018 2475
… …
2025#if EV_IDLE_ENABLE 2482#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 2483 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 2484 idle_reify (EV_A);
2028#endif 2485#endif
2029 2486
2487#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 2488 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 2489 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2490 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2491#endif
2033 2492
2034 call_pending (EV_A); 2493 EV_INVOKE_PENDING;
2035 } 2494 }
2036 while (expect_true ( 2495 while (expect_true (
2037 activecnt 2496 activecnt
2038 && !loop_done 2497 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2498 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2040 )); 2499 ));
2041 2500
2042 if (loop_done == EVUNLOOP_ONE) 2501 if (loop_done == EVBREAK_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 2502 loop_done = EVBREAK_CANCEL;
2044}
2045 2503
2504#if EV_FEATURE_API
2505 --loop_depth;
2506#endif
2507}
2508
2046void 2509void
2047ev_unloop (EV_P_ int how) 2510ev_break (EV_P_ int how)
2048{ 2511{
2049 loop_done = how; 2512 loop_done = how;
2050} 2513}
2051 2514
2515void
2516ev_ref (EV_P)
2517{
2518 ++activecnt;
2519}
2520
2521void
2522ev_unref (EV_P)
2523{
2524 --activecnt;
2525}
2526
2527void
2528ev_now_update (EV_P)
2529{
2530 time_update (EV_A_ 1e100);
2531}
2532
2533void
2534ev_suspend (EV_P)
2535{
2536 ev_now_update (EV_A);
2537}
2538
2539void
2540ev_resume (EV_P)
2541{
2542 ev_tstamp mn_prev = mn_now;
2543
2544 ev_now_update (EV_A);
2545 timers_reschedule (EV_A_ mn_now - mn_prev);
2546#if EV_PERIODIC_ENABLE
2547 /* TODO: really do this? */
2548 periodics_reschedule (EV_A);
2549#endif
2550}
2551
2052/*****************************************************************************/ 2552/*****************************************************************************/
2553/* singly-linked list management, used when the expected list length is short */
2053 2554
2054void inline_size 2555inline_size void
2055wlist_add (WL *head, WL elem) 2556wlist_add (WL *head, WL elem)
2056{ 2557{
2057 elem->next = *head; 2558 elem->next = *head;
2058 *head = elem; 2559 *head = elem;
2059} 2560}
2060 2561
2061void inline_size 2562inline_size void
2062wlist_del (WL *head, WL elem) 2563wlist_del (WL *head, WL elem)
2063{ 2564{
2064 while (*head) 2565 while (*head)
2065 { 2566 {
2066 if (*head == elem) 2567 if (expect_true (*head == elem))
2067 { 2568 {
2068 *head = elem->next; 2569 *head = elem->next;
2069 return; 2570 break;
2070 } 2571 }
2071 2572
2072 head = &(*head)->next; 2573 head = &(*head)->next;
2073 } 2574 }
2074} 2575}
2075 2576
2076void inline_speed 2577/* internal, faster, version of ev_clear_pending */
2578inline_speed void
2077clear_pending (EV_P_ W w) 2579clear_pending (EV_P_ W w)
2078{ 2580{
2079 if (w->pending) 2581 if (w->pending)
2080 { 2582 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2583 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 2584 w->pending = 0;
2083 } 2585 }
2084} 2586}
2085 2587
2086int 2588int
… …
2090 int pending = w_->pending; 2592 int pending = w_->pending;
2091 2593
2092 if (expect_true (pending)) 2594 if (expect_true (pending))
2093 { 2595 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2596 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2597 p->w = (W)&pending_w;
2095 w_->pending = 0; 2598 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 2599 return p->events;
2098 } 2600 }
2099 else 2601 else
2100 return 0; 2602 return 0;
2101} 2603}
2102 2604
2103void inline_size 2605inline_size void
2104pri_adjust (EV_P_ W w) 2606pri_adjust (EV_P_ W w)
2105{ 2607{
2106 int pri = w->priority; 2608 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2609 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2610 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 2611 ev_set_priority (w, pri);
2110} 2612}
2111 2613
2112void inline_speed 2614inline_speed void
2113ev_start (EV_P_ W w, int active) 2615ev_start (EV_P_ W w, int active)
2114{ 2616{
2115 pri_adjust (EV_A_ w); 2617 pri_adjust (EV_A_ w);
2116 w->active = active; 2618 w->active = active;
2117 ev_ref (EV_A); 2619 ev_ref (EV_A);
2118} 2620}
2119 2621
2120void inline_size 2622inline_size void
2121ev_stop (EV_P_ W w) 2623ev_stop (EV_P_ W w)
2122{ 2624{
2123 ev_unref (EV_A); 2625 ev_unref (EV_A);
2124 w->active = 0; 2626 w->active = 0;
2125} 2627}
… …
2132 int fd = w->fd; 2634 int fd = w->fd;
2133 2635
2134 if (expect_false (ev_is_active (w))) 2636 if (expect_false (ev_is_active (w)))
2135 return; 2637 return;
2136 2638
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 2639 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2640 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 2641
2139 EV_FREQUENT_CHECK; 2642 EV_FREQUENT_CHECK;
2140 2643
2141 ev_start (EV_A_ (W)w, 1); 2644 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2645 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 2646 wlist_add (&anfds[fd].head, (WL)w);
2144 2647
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 2649 w->events &= ~EV__IOFDSET;
2147 2650
2148 EV_FREQUENT_CHECK; 2651 EV_FREQUENT_CHECK;
2149} 2652}
2150 2653
2151void noinline 2654void noinline
… …
2153{ 2656{
2154 clear_pending (EV_A_ (W)w); 2657 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 2658 if (expect_false (!ev_is_active (w)))
2156 return; 2659 return;
2157 2660
2158 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2661 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159 2662
2160 EV_FREQUENT_CHECK; 2663 EV_FREQUENT_CHECK;
2161 2664
2162 wlist_del (&anfds[w->fd].head, (WL)w); 2665 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 2666 ev_stop (EV_A_ (W)w);
2164 2667
2165 fd_change (EV_A_ w->fd, 1); 2668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2166 2669
2167 EV_FREQUENT_CHECK; 2670 EV_FREQUENT_CHECK;
2168} 2671}
2169 2672
2170void noinline 2673void noinline
… …
2173 if (expect_false (ev_is_active (w))) 2676 if (expect_false (ev_is_active (w)))
2174 return; 2677 return;
2175 2678
2176 ev_at (w) += mn_now; 2679 ev_at (w) += mn_now;
2177 2680
2178 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2681 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179 2682
2180 EV_FREQUENT_CHECK; 2683 EV_FREQUENT_CHECK;
2181 2684
2182 ++timercnt; 2685 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2686 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 2689 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 2690 upheap (timers, ev_active (w));
2188 2691
2189 EV_FREQUENT_CHECK; 2692 EV_FREQUENT_CHECK;
2190 2693
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 2695}
2193 2696
2194void noinline 2697void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 2698ev_timer_stop (EV_P_ ev_timer *w)
2196{ 2699{
… …
2201 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
2202 2705
2203 { 2706 {
2204 int active = ev_active (w); 2707 int active = ev_active (w);
2205 2708
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2709 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 2710
2208 --timercnt; 2711 --timercnt;
2209 2712
2210 if (expect_true (active < timercnt + HEAP0)) 2713 if (expect_true (active < timercnt + HEAP0))
2211 { 2714 {
2212 timers [active] = timers [timercnt + HEAP0]; 2715 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 2716 adjustheap (timers, timercnt, active);
2214 } 2717 }
2215 } 2718 }
2216 2719
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 2720 ev_at (w) -= mn_now;
2220 2721
2221 ev_stop (EV_A_ (W)w); 2722 ev_stop (EV_A_ (W)w);
2723
2724 EV_FREQUENT_CHECK;
2222} 2725}
2223 2726
2224void noinline 2727void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 2728ev_timer_again (EV_P_ ev_timer *w)
2226{ 2729{
… …
2244 } 2747 }
2245 2748
2246 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2247} 2750}
2248 2751
2752ev_tstamp
2753ev_timer_remaining (EV_P_ ev_timer *w)
2754{
2755 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2756}
2757
2249#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2250void noinline 2759void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 2760ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 2761{
2253 if (expect_false (ev_is_active (w))) 2762 if (expect_false (ev_is_active (w)))
… …
2255 2764
2256 if (w->reschedule_cb) 2765 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2766 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 2767 else if (w->interval)
2259 { 2768 {
2260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2769 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 2770 /* this formula differs from the one in periodic_reify because we do not always round up */
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 2772 }
2264 else 2773 else
2265 ev_at (w) = w->offset; 2774 ev_at (w) = w->offset;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 2782 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 2783 upheap (periodics, ev_active (w));
2275 2784
2276 EV_FREQUENT_CHECK; 2785 EV_FREQUENT_CHECK;
2277 2786
2278 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2787 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279} 2788}
2280 2789
2281void noinline 2790void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 2791ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 2792{
… …
2288 EV_FREQUENT_CHECK; 2797 EV_FREQUENT_CHECK;
2289 2798
2290 { 2799 {
2291 int active = ev_active (w); 2800 int active = ev_active (w);
2292 2801
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2802 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 2803
2295 --periodiccnt; 2804 --periodiccnt;
2296 2805
2297 if (expect_true (active < periodiccnt + HEAP0)) 2806 if (expect_true (active < periodiccnt + HEAP0))
2298 { 2807 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 2808 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 2809 adjustheap (periodics, periodiccnt, active);
2301 } 2810 }
2302 } 2811 }
2303 2812
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 2813 ev_stop (EV_A_ (W)w);
2814
2815 EV_FREQUENT_CHECK;
2307} 2816}
2308 2817
2309void noinline 2818void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 2819ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 2820{
… …
2317 2826
2318#ifndef SA_RESTART 2827#ifndef SA_RESTART
2319# define SA_RESTART 0 2828# define SA_RESTART 0
2320#endif 2829#endif
2321 2830
2831#if EV_SIGNAL_ENABLE
2832
2322void noinline 2833void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 2834ev_signal_start (EV_P_ ev_signal *w)
2324{ 2835{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 2836 if (expect_false (ev_is_active (w)))
2329 return; 2837 return;
2330 2838
2331 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2839 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2332 2840
2333 evpipe_init (EV_A); 2841#if EV_MULTIPLICITY
2842 assert (("libev: a signal must not be attached to two different loops",
2843 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2334 2844
2335 EV_FREQUENT_CHECK; 2845 signals [w->signum - 1].loop = EV_A;
2846#endif
2336 2847
2848 EV_FREQUENT_CHECK;
2849
2850#if EV_USE_SIGNALFD
2851 if (sigfd == -2)
2337 { 2852 {
2338#ifndef _WIN32 2853 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 2854 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 2855 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 2856
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2857 if (sigfd >= 0)
2858 {
2859 fd_intern (sigfd); /* doing it twice will not hurt */
2345 2860
2346#ifndef _WIN32 2861 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 2862
2348#endif 2863 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2864 ev_set_priority (&sigfd_w, EV_MAXPRI);
2865 ev_io_start (EV_A_ &sigfd_w);
2866 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2867 }
2349 } 2868 }
2869
2870 if (sigfd >= 0)
2871 {
2872 /* TODO: check .head */
2873 sigaddset (&sigfd_set, w->signum);
2874 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2875
2876 signalfd (sigfd, &sigfd_set, 0);
2877 }
2878#endif
2350 2879
2351 ev_start (EV_A_ (W)w, 1); 2880 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 2881 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 2882
2354 if (!((WL)w)->next) 2883 if (!((WL)w)->next)
2884# if EV_USE_SIGNALFD
2885 if (sigfd < 0) /*TODO*/
2886# endif
2355 { 2887 {
2356#if _WIN32 2888# ifdef _WIN32
2889 evpipe_init (EV_A);
2890
2357 signal (w->signum, ev_sighandler); 2891 signal (w->signum, ev_sighandler);
2358#else 2892# else
2359 struct sigaction sa; 2893 struct sigaction sa;
2894
2895 evpipe_init (EV_A);
2896
2360 sa.sa_handler = ev_sighandler; 2897 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 2898 sigfillset (&sa.sa_mask);
2362 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2899 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363 sigaction (w->signum, &sa, 0); 2900 sigaction (w->signum, &sa, 0);
2901
2902 if (origflags & EVFLAG_NOSIGMASK)
2903 {
2904 sigemptyset (&sa.sa_mask);
2905 sigaddset (&sa.sa_mask, w->signum);
2906 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2907 }
2364#endif 2908#endif
2365 } 2909 }
2366 2910
2367 EV_FREQUENT_CHECK; 2911 EV_FREQUENT_CHECK;
2368} 2912}
2369 2913
2370void noinline 2914void noinline
… …
2378 2922
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 2923 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 2924 ev_stop (EV_A_ (W)w);
2381 2925
2382 if (!signals [w->signum - 1].head) 2926 if (!signals [w->signum - 1].head)
2927 {
2928#if EV_MULTIPLICITY
2929 signals [w->signum - 1].loop = 0; /* unattach from signal */
2930#endif
2931#if EV_USE_SIGNALFD
2932 if (sigfd >= 0)
2933 {
2934 sigset_t ss;
2935
2936 sigemptyset (&ss);
2937 sigaddset (&ss, w->signum);
2938 sigdelset (&sigfd_set, w->signum);
2939
2940 signalfd (sigfd, &sigfd_set, 0);
2941 sigprocmask (SIG_UNBLOCK, &ss, 0);
2942 }
2943 else
2944#endif
2383 signal (w->signum, SIG_DFL); 2945 signal (w->signum, SIG_DFL);
2946 }
2384 2947
2385 EV_FREQUENT_CHECK; 2948 EV_FREQUENT_CHECK;
2386} 2949}
2950
2951#endif
2952
2953#if EV_CHILD_ENABLE
2387 2954
2388void 2955void
2389ev_child_start (EV_P_ ev_child *w) 2956ev_child_start (EV_P_ ev_child *w)
2390{ 2957{
2391#if EV_MULTIPLICITY 2958#if EV_MULTIPLICITY
2392 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2959 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393#endif 2960#endif
2394 if (expect_false (ev_is_active (w))) 2961 if (expect_false (ev_is_active (w)))
2395 return; 2962 return;
2396 2963
2397 EV_FREQUENT_CHECK; 2964 EV_FREQUENT_CHECK;
2398 2965
2399 ev_start (EV_A_ (W)w, 1); 2966 ev_start (EV_A_ (W)w, 1);
2400 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2967 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2401 2968
2402 EV_FREQUENT_CHECK; 2969 EV_FREQUENT_CHECK;
2403} 2970}
2404 2971
2405void 2972void
… …
2409 if (expect_false (!ev_is_active (w))) 2976 if (expect_false (!ev_is_active (w)))
2410 return; 2977 return;
2411 2978
2412 EV_FREQUENT_CHECK; 2979 EV_FREQUENT_CHECK;
2413 2980
2414 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2981 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2415 ev_stop (EV_A_ (W)w); 2982 ev_stop (EV_A_ (W)w);
2416 2983
2417 EV_FREQUENT_CHECK; 2984 EV_FREQUENT_CHECK;
2418} 2985}
2986
2987#endif
2419 2988
2420#if EV_STAT_ENABLE 2989#if EV_STAT_ENABLE
2421 2990
2422# ifdef _WIN32 2991# ifdef _WIN32
2423# undef lstat 2992# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 2993# define lstat(a,b) _stati64 (a,b)
2425# endif 2994# endif
2426 2995
2427#define DEF_STAT_INTERVAL 5.0074891 2996#define DEF_STAT_INTERVAL 5.0074891
2997#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 2998#define MIN_STAT_INTERVAL 0.1074891
2429 2999
2430static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3000static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431 3001
2432#if EV_USE_INOTIFY 3002#if EV_USE_INOTIFY
2433# define EV_INOTIFY_BUFSIZE 8192 3003
3004/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3005# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2434 3006
2435static void noinline 3007static void noinline
2436infy_add (EV_P_ ev_stat *w) 3008infy_add (EV_P_ ev_stat *w)
2437{ 3009{
2438 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3010 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2439 3011
2440 if (w->wd < 0) 3012 if (w->wd >= 0)
3013 {
3014 struct statfs sfs;
3015
3016 /* now local changes will be tracked by inotify, but remote changes won't */
3017 /* unless the filesystem is known to be local, we therefore still poll */
3018 /* also do poll on <2.6.25, but with normal frequency */
3019
3020 if (!fs_2625)
3021 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3022 else if (!statfs (w->path, &sfs)
3023 && (sfs.f_type == 0x1373 /* devfs */
3024 || sfs.f_type == 0xEF53 /* ext2/3 */
3025 || sfs.f_type == 0x3153464a /* jfs */
3026 || sfs.f_type == 0x52654973 /* reiser3 */
3027 || sfs.f_type == 0x01021994 /* tempfs */
3028 || sfs.f_type == 0x58465342 /* xfs */))
3029 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3030 else
3031 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2441 { 3032 }
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3033 else
3034 {
3035 /* can't use inotify, continue to stat */
3036 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443 3037
2444 /* monitor some parent directory for speedup hints */ 3038 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3039 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 3040 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3041 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 3042 {
2449 char path [4096]; 3043 char path [4096];
2450 strcpy (path, w->path); 3044 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3048 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3049 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 3050
2457 char *pend = strrchr (path, '/'); 3051 char *pend = strrchr (path, '/');
2458 3052
2459 if (!pend) 3053 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 3054 break;
2461 3055
2462 *pend = 0; 3056 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 3057 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 3058 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3059 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 3060 }
2467 } 3061 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 3062
2471 if (w->wd >= 0) 3063 if (w->wd >= 0)
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3064 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3065
3066 /* now re-arm timer, if required */
3067 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3068 ev_timer_again (EV_A_ &w->timer);
3069 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473} 3070}
2474 3071
2475static void noinline 3072static void noinline
2476infy_del (EV_P_ ev_stat *w) 3073infy_del (EV_P_ ev_stat *w)
2477{ 3074{
… …
2480 3077
2481 if (wd < 0) 3078 if (wd < 0)
2482 return; 3079 return;
2483 3080
2484 w->wd = -2; 3081 w->wd = -2;
2485 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3082 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2486 wlist_del (&fs_hash [slot].head, (WL)w); 3083 wlist_del (&fs_hash [slot].head, (WL)w);
2487 3084
2488 /* remove this watcher, if others are watching it, they will rearm */ 3085 /* remove this watcher, if others are watching it, they will rearm */
2489 inotify_rm_watch (fs_fd, wd); 3086 inotify_rm_watch (fs_fd, wd);
2490} 3087}
2491 3088
2492static void noinline 3089static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3090infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3091{
2495 if (slot < 0) 3092 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3093 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3094 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3095 infy_wd (EV_A_ slot, wd, ev);
2499 else 3096 else
2500 { 3097 {
2501 WL w_; 3098 WL w_;
2502 3099
2503 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3100 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2504 { 3101 {
2505 ev_stat *w = (ev_stat *)w_; 3102 ev_stat *w = (ev_stat *)w_;
2506 w_ = w_->next; /* lets us remove this watcher and all before it */ 3103 w_ = w_->next; /* lets us remove this watcher and all before it */
2507 3104
2508 if (w->wd == wd || wd == -1) 3105 if (w->wd == wd || wd == -1)
2509 { 3106 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3107 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3108 {
3109 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2512 w->wd = -1; 3110 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3111 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3112 }
2515 3113
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3114 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3119
2522static void 3120static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3121infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3122{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3123 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3124 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3125 int len = read (fs_fd, buf, sizeof (buf));
2529 3126
2530 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3127 for (ofs = 0; ofs < len; )
3128 {
3129 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2531 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3130 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3131 ofs += sizeof (struct inotify_event) + ev->len;
3132 }
2532} 3133}
2533 3134
2534void inline_size 3135inline_size void
3136ev_check_2625 (EV_P)
3137{
3138 /* kernels < 2.6.25 are borked
3139 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3140 */
3141 if (ev_linux_version () < 0x020619)
3142 return;
3143
3144 fs_2625 = 1;
3145}
3146
3147inline_size int
3148infy_newfd (void)
3149{
3150#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3151 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3152 if (fd >= 0)
3153 return fd;
3154#endif
3155 return inotify_init ();
3156}
3157
3158inline_size void
2535infy_init (EV_P) 3159infy_init (EV_P)
2536{ 3160{
2537 if (fs_fd != -2) 3161 if (fs_fd != -2)
2538 return; 3162 return;
2539 3163
3164 fs_fd = -1;
3165
3166 ev_check_2625 (EV_A);
3167
2540 fs_fd = inotify_init (); 3168 fs_fd = infy_newfd ();
2541 3169
2542 if (fs_fd >= 0) 3170 if (fs_fd >= 0)
2543 { 3171 {
3172 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3173 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3174 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3175 ev_io_start (EV_A_ &fs_w);
3176 ev_unref (EV_A);
2547 } 3177 }
2548} 3178}
2549 3179
2550void inline_size 3180inline_size void
2551infy_fork (EV_P) 3181infy_fork (EV_P)
2552{ 3182{
2553 int slot; 3183 int slot;
2554 3184
2555 if (fs_fd < 0) 3185 if (fs_fd < 0)
2556 return; 3186 return;
2557 3187
3188 ev_ref (EV_A);
3189 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3190 close (fs_fd);
2559 fs_fd = inotify_init (); 3191 fs_fd = infy_newfd ();
2560 3192
3193 if (fs_fd >= 0)
3194 {
3195 fd_intern (fs_fd);
3196 ev_io_set (&fs_w, fs_fd, EV_READ);
3197 ev_io_start (EV_A_ &fs_w);
3198 ev_unref (EV_A);
3199 }
3200
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3201 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2562 { 3202 {
2563 WL w_ = fs_hash [slot].head; 3203 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3204 fs_hash [slot].head = 0;
2565 3205
2566 while (w_) 3206 while (w_)
… …
2571 w->wd = -1; 3211 w->wd = -1;
2572 3212
2573 if (fs_fd >= 0) 3213 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3214 infy_add (EV_A_ w); /* re-add, no matter what */
2575 else 3215 else
3216 {
3217 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3218 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2576 ev_timer_start (EV_A_ &w->timer); 3219 ev_timer_again (EV_A_ &w->timer);
3220 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3221 }
2577 } 3222 }
2578
2579 } 3223 }
2580} 3224}
2581 3225
2582#endif 3226#endif
2583 3227
… …
2599static void noinline 3243static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3244stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3245{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3246 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3247
2604 /* we copy this here each the time so that */ 3248 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3249 ev_stat_stat (EV_A_ w);
2608 3250
2609 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3251 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2610 if ( 3252 if (
2611 w->prev.st_dev != w->attr.st_dev 3253 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3254 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3255 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3256 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3257 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3258 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3259 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3260 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3261 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3262 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3263 || prev.st_ctime != w->attr.st_ctime
2622 ) { 3264 ) {
3265 /* we only update w->prev on actual differences */
3266 /* in case we test more often than invoke the callback, */
3267 /* to ensure that prev is always different to attr */
3268 w->prev = prev;
3269
2623 #if EV_USE_INOTIFY 3270 #if EV_USE_INOTIFY
3271 if (fs_fd >= 0)
3272 {
2624 infy_del (EV_A_ w); 3273 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3274 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3275 ev_stat_stat (EV_A_ w); /* avoid race... */
3276 }
2627 #endif 3277 #endif
2628 3278
2629 ev_feed_event (EV_A_ w, EV_STAT); 3279 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3280 }
2631} 3281}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3284ev_stat_start (EV_P_ ev_stat *w)
2635{ 3285{
2636 if (expect_false (ev_is_active (w))) 3286 if (expect_false (ev_is_active (w)))
2637 return; 3287 return;
2638 3288
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3289 ev_stat_stat (EV_A_ w);
2644 3290
3291 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3292 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3293
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3294 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3295 ev_set_priority (&w->timer, ev_priority (w));
2650 3296
2651#if EV_USE_INOTIFY 3297#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3298 infy_init (EV_A);
2653 3299
2654 if (fs_fd >= 0) 3300 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3301 infy_add (EV_A_ w);
2656 else 3302 else
2657#endif 3303#endif
3304 {
2658 ev_timer_start (EV_A_ &w->timer); 3305 ev_timer_again (EV_A_ &w->timer);
3306 ev_unref (EV_A);
3307 }
2659 3308
2660 ev_start (EV_A_ (W)w, 1); 3309 ev_start (EV_A_ (W)w, 1);
2661 3310
2662 EV_FREQUENT_CHECK; 3311 EV_FREQUENT_CHECK;
2663} 3312}
… …
2672 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
2673 3322
2674#if EV_USE_INOTIFY 3323#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3324 infy_del (EV_A_ w);
2676#endif 3325#endif
3326
3327 if (ev_is_active (&w->timer))
3328 {
3329 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3330 ev_timer_stop (EV_A_ &w->timer);
3331 }
2678 3332
2679 ev_stop (EV_A_ (W)w); 3333 ev_stop (EV_A_ (W)w);
2680 3334
2681 EV_FREQUENT_CHECK; 3335 EV_FREQUENT_CHECK;
2682} 3336}
… …
2727 3381
2728 EV_FREQUENT_CHECK; 3382 EV_FREQUENT_CHECK;
2729} 3383}
2730#endif 3384#endif
2731 3385
3386#if EV_PREPARE_ENABLE
2732void 3387void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3388ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3389{
2735 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2736 return; 3391 return;
… …
2762 3417
2763 ev_stop (EV_A_ (W)w); 3418 ev_stop (EV_A_ (W)w);
2764 3419
2765 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2766} 3421}
3422#endif
2767 3423
3424#if EV_CHECK_ENABLE
2768void 3425void
2769ev_check_start (EV_P_ ev_check *w) 3426ev_check_start (EV_P_ ev_check *w)
2770{ 3427{
2771 if (expect_false (ev_is_active (w))) 3428 if (expect_false (ev_is_active (w)))
2772 return; 3429 return;
… …
2798 3455
2799 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2800 3457
2801 EV_FREQUENT_CHECK; 3458 EV_FREQUENT_CHECK;
2802} 3459}
3460#endif
2803 3461
2804#if EV_EMBED_ENABLE 3462#if EV_EMBED_ENABLE
2805void noinline 3463void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 3464ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 3465{
2808 ev_loop (w->other, EVLOOP_NONBLOCK); 3466 ev_run (w->other, EVRUN_NOWAIT);
2809} 3467}
2810 3468
2811static void 3469static void
2812embed_io_cb (EV_P_ ev_io *io, int revents) 3470embed_io_cb (EV_P_ ev_io *io, int revents)
2813{ 3471{
2814 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3472 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2815 3473
2816 if (ev_cb (w)) 3474 if (ev_cb (w))
2817 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3475 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2818 else 3476 else
2819 ev_loop (w->other, EVLOOP_NONBLOCK); 3477 ev_run (w->other, EVRUN_NOWAIT);
2820} 3478}
2821 3479
2822static void 3480static void
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3481embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 3482{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3483 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 3484
2827 { 3485 {
2828 struct ev_loop *loop = w->other; 3486 EV_P = w->other;
2829 3487
2830 while (fdchangecnt) 3488 while (fdchangecnt)
2831 { 3489 {
2832 fd_reify (EV_A); 3490 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3491 ev_run (EV_A_ EVRUN_NOWAIT);
2834 } 3492 }
2835 } 3493 }
2836} 3494}
2837 3495
2838static void 3496static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3497embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 3498{
2841 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3499 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2842 3500
3501 ev_embed_stop (EV_A_ w);
3502
2843 { 3503 {
2844 struct ev_loop *loop = w->other; 3504 EV_P = w->other;
2845 3505
2846 ev_loop_fork (EV_A); 3506 ev_loop_fork (EV_A);
3507 ev_run (EV_A_ EVRUN_NOWAIT);
2847 } 3508 }
3509
3510 ev_embed_start (EV_A_ w);
2848} 3511}
2849 3512
2850#if 0 3513#if 0
2851static void 3514static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3515embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2860{ 3523{
2861 if (expect_false (ev_is_active (w))) 3524 if (expect_false (ev_is_active (w)))
2862 return; 3525 return;
2863 3526
2864 { 3527 {
2865 struct ev_loop *loop = w->other; 3528 EV_P = w->other;
2866 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3529 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2867 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3530 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2868 } 3531 }
2869 3532
2870 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2871 3534
… …
2897 3560
2898 ev_io_stop (EV_A_ &w->io); 3561 ev_io_stop (EV_A_ &w->io);
2899 ev_prepare_stop (EV_A_ &w->prepare); 3562 ev_prepare_stop (EV_A_ &w->prepare);
2900 ev_fork_stop (EV_A_ &w->fork); 3563 ev_fork_stop (EV_A_ &w->fork);
2901 3564
3565 ev_stop (EV_A_ (W)w);
3566
2902 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
2903} 3568}
2904#endif 3569#endif
2905 3570
2906#if EV_FORK_ENABLE 3571#if EV_FORK_ENABLE
… …
2939 3604
2940 EV_FREQUENT_CHECK; 3605 EV_FREQUENT_CHECK;
2941} 3606}
2942#endif 3607#endif
2943 3608
2944#if EV_ASYNC_ENABLE 3609#if EV_CLEANUP_ENABLE
2945void 3610void
2946ev_async_start (EV_P_ ev_async *w) 3611ev_cleanup_start (EV_P_ ev_cleanup *w)
2947{ 3612{
2948 if (expect_false (ev_is_active (w))) 3613 if (expect_false (ev_is_active (w)))
2949 return; 3614 return;
3615
3616 EV_FREQUENT_CHECK;
3617
3618 ev_start (EV_A_ (W)w, ++cleanupcnt);
3619 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3620 cleanups [cleanupcnt - 1] = w;
3621
3622 /* cleanup watchers should never keep a refcount on the loop */
3623 ev_unref (EV_A);
3624 EV_FREQUENT_CHECK;
3625}
3626
3627void
3628ev_cleanup_stop (EV_P_ ev_cleanup *w)
3629{
3630 clear_pending (EV_A_ (W)w);
3631 if (expect_false (!ev_is_active (w)))
3632 return;
3633
3634 EV_FREQUENT_CHECK;
3635 ev_ref (EV_A);
3636
3637 {
3638 int active = ev_active (w);
3639
3640 cleanups [active - 1] = cleanups [--cleanupcnt];
3641 ev_active (cleanups [active - 1]) = active;
3642 }
3643
3644 ev_stop (EV_A_ (W)w);
3645
3646 EV_FREQUENT_CHECK;
3647}
3648#endif
3649
3650#if EV_ASYNC_ENABLE
3651void
3652ev_async_start (EV_P_ ev_async *w)
3653{
3654 if (expect_false (ev_is_active (w)))
3655 return;
3656
3657 w->sent = 0;
2950 3658
2951 evpipe_init (EV_A); 3659 evpipe_init (EV_A);
2952 3660
2953 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2954 3662
… …
2982 3690
2983void 3691void
2984ev_async_send (EV_P_ ev_async *w) 3692ev_async_send (EV_P_ ev_async *w)
2985{ 3693{
2986 w->sent = 1; 3694 w->sent = 1;
2987 evpipe_write (EV_A_ &gotasync); 3695 evpipe_write (EV_A_ &async_pending);
2988} 3696}
2989#endif 3697#endif
2990 3698
2991/*****************************************************************************/ 3699/*****************************************************************************/
2992 3700
… …
3032{ 3740{
3033 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3741 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3034 3742
3035 if (expect_false (!once)) 3743 if (expect_false (!once))
3036 { 3744 {
3037 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3745 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3038 return; 3746 return;
3039 } 3747 }
3040 3748
3041 once->cb = cb; 3749 once->cb = cb;
3042 once->arg = arg; 3750 once->arg = arg;
… …
3054 ev_timer_set (&once->to, timeout, 0.); 3762 ev_timer_set (&once->to, timeout, 0.);
3055 ev_timer_start (EV_A_ &once->to); 3763 ev_timer_start (EV_A_ &once->to);
3056 } 3764 }
3057} 3765}
3058 3766
3767/*****************************************************************************/
3768
3769#if EV_WALK_ENABLE
3770void
3771ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3772{
3773 int i, j;
3774 ev_watcher_list *wl, *wn;
3775
3776 if (types & (EV_IO | EV_EMBED))
3777 for (i = 0; i < anfdmax; ++i)
3778 for (wl = anfds [i].head; wl; )
3779 {
3780 wn = wl->next;
3781
3782#if EV_EMBED_ENABLE
3783 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3784 {
3785 if (types & EV_EMBED)
3786 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3787 }
3788 else
3789#endif
3790#if EV_USE_INOTIFY
3791 if (ev_cb ((ev_io *)wl) == infy_cb)
3792 ;
3793 else
3794#endif
3795 if ((ev_io *)wl != &pipe_w)
3796 if (types & EV_IO)
3797 cb (EV_A_ EV_IO, wl);
3798
3799 wl = wn;
3800 }
3801
3802 if (types & (EV_TIMER | EV_STAT))
3803 for (i = timercnt + HEAP0; i-- > HEAP0; )
3804#if EV_STAT_ENABLE
3805 /*TODO: timer is not always active*/
3806 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3807 {
3808 if (types & EV_STAT)
3809 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3810 }
3811 else
3812#endif
3813 if (types & EV_TIMER)
3814 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3815
3816#if EV_PERIODIC_ENABLE
3817 if (types & EV_PERIODIC)
3818 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3819 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3820#endif
3821
3822#if EV_IDLE_ENABLE
3823 if (types & EV_IDLE)
3824 for (j = NUMPRI; i--; )
3825 for (i = idlecnt [j]; i--; )
3826 cb (EV_A_ EV_IDLE, idles [j][i]);
3827#endif
3828
3829#if EV_FORK_ENABLE
3830 if (types & EV_FORK)
3831 for (i = forkcnt; i--; )
3832 if (ev_cb (forks [i]) != embed_fork_cb)
3833 cb (EV_A_ EV_FORK, forks [i]);
3834#endif
3835
3836#if EV_ASYNC_ENABLE
3837 if (types & EV_ASYNC)
3838 for (i = asynccnt; i--; )
3839 cb (EV_A_ EV_ASYNC, asyncs [i]);
3840#endif
3841
3842#if EV_PREPARE_ENABLE
3843 if (types & EV_PREPARE)
3844 for (i = preparecnt; i--; )
3845# if EV_EMBED_ENABLE
3846 if (ev_cb (prepares [i]) != embed_prepare_cb)
3847# endif
3848 cb (EV_A_ EV_PREPARE, prepares [i]);
3849#endif
3850
3851#if EV_CHECK_ENABLE
3852 if (types & EV_CHECK)
3853 for (i = checkcnt; i--; )
3854 cb (EV_A_ EV_CHECK, checks [i]);
3855#endif
3856
3857#if EV_SIGNAL_ENABLE
3858 if (types & EV_SIGNAL)
3859 for (i = 0; i < EV_NSIG - 1; ++i)
3860 for (wl = signals [i].head; wl; )
3861 {
3862 wn = wl->next;
3863 cb (EV_A_ EV_SIGNAL, wl);
3864 wl = wn;
3865 }
3866#endif
3867
3868#if EV_CHILD_ENABLE
3869 if (types & EV_CHILD)
3870 for (i = (EV_PID_HASHSIZE); i--; )
3871 for (wl = childs [i]; wl; )
3872 {
3873 wn = wl->next;
3874 cb (EV_A_ EV_CHILD, wl);
3875 wl = wn;
3876 }
3877#endif
3878/* EV_STAT 0x00001000 /* stat data changed */
3879/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3880}
3881#endif
3882
3059#if EV_MULTIPLICITY 3883#if EV_MULTIPLICITY
3060 #include "ev_wrap.h" 3884 #include "ev_wrap.h"
3061#endif 3885#endif
3062 3886
3063#ifdef __cplusplus 3887EV_CPP(})
3064}
3065#endif
3066 3888

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