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Comparing libev/ev.c (file contents):
Revision 1.274 by root, Thu Nov 20 00:35:10 2008 UTC vs.
Revision 1.362 by root, Sun Oct 24 19:15:52 2010 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 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
… …
57# endif 53# endif
58# ifndef EV_USE_MONOTONIC 54# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 55# define EV_USE_MONOTONIC 1
60# endif 56# endif
61# endif 57# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL)
59# define EV_USE_CLOCK_SYSCALL 0
62# endif 60# endif
63 61
64# if HAVE_CLOCK_GETTIME 62# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 63# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 64# define EV_USE_MONOTONIC 1
67# endif 65# endif
68# ifndef EV_USE_REALTIME 66# ifndef EV_USE_REALTIME
69# define EV_USE_REALTIME 1 67# define EV_USE_REALTIME 0
70# endif 68# endif
71# else 69# else
72# ifndef EV_USE_MONOTONIC 70# ifndef EV_USE_MONOTONIC
73# define EV_USE_MONOTONIC 0 71# define EV_USE_MONOTONIC 0
74# endif 72# endif
75# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
77# endif 75# endif
78# endif 76# endif
79 77
78# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
83# else 82# else
83# undef EV_USE_NANOSLEEP
84# 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
85# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
86# endif 94# endif
87 95
96# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 99# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 100# else
101# undef EV_USE_POLL
100# define EV_USE_POLL 0 102# define EV_USE_POLL 0
101# endif
102# endif 103# endif
103 104
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
107# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
110# endif 112# endif
111 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
118# endif 121# endif
119 122
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
123# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
126# endif 130# endif
127 131
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
134# endif 139# endif
135 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 157# endif
143 158
144#endif 159#endif
145 160
146#include <math.h> 161#include <math.h>
147#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
148#include <fcntl.h> 164#include <fcntl.h>
149#include <stddef.h> 165#include <stddef.h>
150 166
151#include <stdio.h> 167#include <stdio.h>
152 168
153#include <assert.h> 169#include <assert.h>
154#include <errno.h> 170#include <errno.h>
155#include <sys/types.h> 171#include <sys/types.h>
156#include <time.h> 172#include <time.h>
173#include <limits.h>
157 174
158#include <signal.h> 175#include <signal.h>
159 176
160#ifdef EV_H 177#ifdef EV_H
161# include EV_H 178# include EV_H
162#else 179#else
163# include "ev.h" 180# include "ev.h"
164#endif 181#endif
182
183EV_CPP(extern "C" {)
165 184
166#ifndef _WIN32 185#ifndef _WIN32
167# include <sys/time.h> 186# include <sys/time.h>
168# include <sys/wait.h> 187# include <sys/wait.h>
169# include <unistd.h> 188# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 192# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
176# endif 195# endif
196# undef EV_AVOID_STDIO
177#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
178 206
179/* 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
180 236
181#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 240# else
185# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
186# endif 242# endif
187#endif 243#endif
188 244
189#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 248# else
193# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
194# endif 250# endif
195#endif 251#endif
196 252
197#ifndef EV_USE_REALTIME 253#ifndef EV_USE_REALTIME
198# define EV_USE_REALTIME 0 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 255#endif
200 256
201#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 260# else
205# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
206# endif 262# endif
207#endif 263#endif
208 264
209#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 267#endif
212 268
213#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
214# ifdef _WIN32 270# ifdef _WIN32
215# define EV_USE_POLL 0 271# define EV_USE_POLL 0
216# else 272# else
217# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 274# endif
219#endif 275#endif
220 276
221#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 280# else
225# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
226# endif 282# endif
227#endif 283#endif
228 284
… …
234# define EV_USE_PORT 0 290# define EV_USE_PORT 0
235#endif 291#endif
236 292
237#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 296# else
241# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
242# endif 298# endif
243#endif 299#endif
244 300
245#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 302# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 303#endif
252 304
253#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 306# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 307#endif
260 308
261#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 312# else
265# 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
266# endif 322# endif
267#endif 323#endif
268 324
269#if 0 /* debugging */ 325#if 0 /* debugging */
270# define EV_VERIFY 3 326# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
273#endif 329#endif
274 330
275#ifndef EV_VERIFY 331#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 333#endif
278 334
279#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 337#endif
282 338
283#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
284# 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
285#endif 355#endif
286 356
287/* 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
288 364
289#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
292#endif 368#endif
… …
306# include <sys/select.h> 382# include <sys/select.h>
307# endif 383# endif
308#endif 384#endif
309 385
310#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 387# include <sys/statfs.h>
313# include <sys/inotify.h> 388# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
320 395
321#if EV_SELECT_IS_WINSOCKET 396#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 397# include <winsock.h>
323#endif 398#endif
324 399
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 400#if EV_USE_EVENTFD
335/* 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 */
336# include <stdint.h> 402# include <stdint.h>
337# ifdef __cplusplus 403# ifndef EFD_NONBLOCK
338extern "C" { 404# define EFD_NONBLOCK O_NONBLOCK
339# endif 405# endif
340int eventfd (unsigned int initval, int flags); 406# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 407# ifdef O_CLOEXEC
342} 408# define EFD_CLOEXEC O_CLOEXEC
409# else
410# define EFD_CLOEXEC 02000000
411# endif
343# 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};
344#endif 436#endif
345 437
346/**/ 438/**/
347 439
348#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 442#else
351# define EV_FREQUENT_CHECK do { } while (0) 443# define EV_FREQUENT_CHECK do { } while (0)
352#endif 444#endif
353 445
354/* 446/*
… …
361 */ 453 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363 455
364#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) */
365#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) */
366/*#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)
367 461
368#if __GNUC__ >= 4 462#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
371#else 465#else
… …
378 472
379#define expect_false(expr) expect ((expr) != 0, 0) 473#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 474#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 475#define inline_size static inline
382 476
383#if EV_MINIMAL 477#if EV_FEATURE_CODE
478# define inline_speed static inline
479#else
384# 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)
385#else 487#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif
391 490
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 491#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 492#define EMPTY2(a,b) /* used to suppress some warnings */
394 493
395typedef ev_watcher *W; 494typedef ev_watcher *W;
… …
397typedef ev_watcher_time *WT; 496typedef ev_watcher_time *WT;
398 497
399#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
401 500
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
402#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
405static 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)
406#endif 519#endif
407 520
408#ifdef _WIN32 521#ifdef _WIN32
409# include "ev_win32.c" 522# include "ev_win32.c"
410#endif 523#endif
411 524
412/*****************************************************************************/ 525/*****************************************************************************/
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
413 576
414static void (*syserr_cb)(const char *msg); 577static void (*syserr_cb)(const char *msg);
415 578
416void 579void
417ev_set_syserr_cb (void (*cb)(const char *msg)) 580ev_set_syserr_cb (void (*cb)(const char *msg))
… …
427 590
428 if (syserr_cb) 591 if (syserr_cb)
429 syserr_cb (msg); 592 syserr_cb (msg);
430 else 593 else
431 { 594 {
595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg);
599 ev_printerr (": ");
600 ev_printerr (err);
601 ev_printerr ("\n");
602#else
432 perror (msg); 603 perror (msg);
604#endif
433 abort (); 605 abort ();
434 } 606 }
435} 607}
436 608
437static void * 609static void *
438ev_realloc_emul (void *ptr, long size) 610ev_realloc_emul (void *ptr, long size)
439{ 611{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
440 /* some systems, notably openbsd and darwin, fail to properly 615 /* some systems, notably openbsd and darwin, fail to properly
441 * implement realloc (x, 0) (as required by both ansi c-98 and 616 * implement realloc (x, 0) (as required by both ansi c-89 and
442 * the single unix specification, so work around them here. 617 * the single unix specification, so work around them here.
443 */ 618 */
444 619
445 if (size) 620 if (size)
446 return realloc (ptr, size); 621 return realloc (ptr, size);
447 622
448 free (ptr); 623 free (ptr);
449 return 0; 624 return 0;
625#endif
450} 626}
451 627
452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
453 629
454void 630void
… …
462{ 638{
463 ptr = alloc (ptr, size); 639 ptr = alloc (ptr, size);
464 640
465 if (!ptr && size) 641 if (!ptr && size)
466 { 642 {
643#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n");
645#else
467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
647#endif
468 abort (); 648 abort ();
469 } 649 }
470 650
471 return ptr; 651 return ptr;
472} 652}
… …
474#define ev_malloc(size) ev_realloc (0, (size)) 654#define ev_malloc(size) ev_realloc (0, (size))
475#define ev_free(ptr) ev_realloc ((ptr), 0) 655#define ev_free(ptr) ev_realloc ((ptr), 0)
476 656
477/*****************************************************************************/ 657/*****************************************************************************/
478 658
659/* set in reify when reification needed */
660#define EV_ANFD_REIFY 1
661
662/* file descriptor info structure */
479typedef struct 663typedef struct
480{ 664{
481 WL head; 665 WL head;
482 unsigned char events; 666 unsigned char events; /* the events watched for */
483 unsigned char reify; 667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused; 669 unsigned char unused;
486#if EV_USE_EPOLL 670#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */ 671 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif 672#endif
489#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
490 SOCKET handle; 674 SOCKET handle;
491#endif 675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
678#endif
492} ANFD; 679} ANFD;
493 680
681/* stores the pending event set for a given watcher */
494typedef struct 682typedef struct
495{ 683{
496 W w; 684 W w;
497 int events; 685 int events; /* the pending event set for the given watcher */
498} ANPENDING; 686} ANPENDING;
499 687
500#if EV_USE_INOTIFY 688#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */ 689/* hash table entry per inotify-id */
502typedef struct 690typedef struct
… …
505} ANFS; 693} ANFS;
506#endif 694#endif
507 695
508/* Heap Entry */ 696/* Heap Entry */
509#if EV_HEAP_CACHE_AT 697#if EV_HEAP_CACHE_AT
698 /* a heap element */
510 typedef struct { 699 typedef struct {
511 ev_tstamp at; 700 ev_tstamp at;
512 WT w; 701 WT w;
513 } ANHE; 702 } ANHE;
514 703
515 #define ANHE_w(he) (he).w /* access watcher, read-write */ 704 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */ 705 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 706 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else 707#else
708 /* a heap element */
519 typedef WT ANHE; 709 typedef WT ANHE;
520 710
521 #define ANHE_w(he) (he) 711 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at 712 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he) 713 #define ANHE_at_cache(he)
… …
547 737
548 static int ev_default_loop_ptr; 738 static int ev_default_loop_ptr;
549 739
550#endif 740#endif
551 741
742#if EV_FEATURE_API
743# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
744# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
745# define EV_INVOKE_PENDING invoke_cb (EV_A)
746#else
747# define EV_RELEASE_CB (void)0
748# define EV_ACQUIRE_CB (void)0
749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
750#endif
751
752#define EVBREAK_RECURSE 0x80
753
552/*****************************************************************************/ 754/*****************************************************************************/
553 755
756#ifndef EV_HAVE_EV_TIME
554ev_tstamp 757ev_tstamp
555ev_time (void) 758ev_time (void)
556{ 759{
557#if EV_USE_REALTIME 760#if EV_USE_REALTIME
761 if (expect_true (have_realtime))
762 {
558 struct timespec ts; 763 struct timespec ts;
559 clock_gettime (CLOCK_REALTIME, &ts); 764 clock_gettime (CLOCK_REALTIME, &ts);
560 return ts.tv_sec + ts.tv_nsec * 1e-9; 765 return ts.tv_sec + ts.tv_nsec * 1e-9;
561#else 766 }
767#endif
768
562 struct timeval tv; 769 struct timeval tv;
563 gettimeofday (&tv, 0); 770 gettimeofday (&tv, 0);
564 return tv.tv_sec + tv.tv_usec * 1e-6; 771 return tv.tv_sec + tv.tv_usec * 1e-6;
565#endif
566} 772}
773#endif
567 774
568ev_tstamp inline_size 775inline_size ev_tstamp
569get_clock (void) 776get_clock (void)
570{ 777{
571#if EV_USE_MONOTONIC 778#if EV_USE_MONOTONIC
572 if (expect_true (have_monotonic)) 779 if (expect_true (have_monotonic))
573 { 780 {
… …
594 if (delay > 0.) 801 if (delay > 0.)
595 { 802 {
596#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
597 struct timespec ts; 804 struct timespec ts;
598 805
599 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
603#elif defined(_WIN32) 808#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
605#else 810#else
606 struct timeval tv; 811 struct timeval tv;
607 812
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
614 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
615#endif 818#endif
616 } 819 }
617} 820}
618 821
619/*****************************************************************************/ 822/*****************************************************************************/
620 823
621#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622 825
623int inline_size 826/* find a suitable new size for the given array, */
827/* hopefully by rounding to a nice-to-malloc size */
828inline_size int
624array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
625{ 830{
626 int ncur = cur + 1; 831 int ncur = cur + 1;
627 832
628 do 833 do
… …
669 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 874 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670 } 875 }
671#endif 876#endif
672 877
673#define array_free(stem, idx) \ 878#define array_free(stem, idx) \
674 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
675 880
676/*****************************************************************************/ 881/*****************************************************************************/
882
883/* dummy callback for pending events */
884static void noinline
885pendingcb (EV_P_ ev_prepare *w, int revents)
886{
887}
677 888
678void noinline 889void noinline
679ev_feed_event (EV_P_ void *w, int revents) 890ev_feed_event (EV_P_ void *w, int revents)
680{ 891{
681 W w_ = (W)w; 892 W w_ = (W)w;
… …
690 pendings [pri][w_->pending - 1].w = w_; 901 pendings [pri][w_->pending - 1].w = w_;
691 pendings [pri][w_->pending - 1].events = revents; 902 pendings [pri][w_->pending - 1].events = revents;
692 } 903 }
693} 904}
694 905
695void inline_speed 906inline_speed void
907feed_reverse (EV_P_ W w)
908{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
910 rfeeds [rfeedcnt++] = w;
911}
912
913inline_size void
914feed_reverse_done (EV_P_ int revents)
915{
916 do
917 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
918 while (rfeedcnt);
919}
920
921inline_speed void
696queue_events (EV_P_ W *events, int eventcnt, int type) 922queue_events (EV_P_ W *events, int eventcnt, int type)
697{ 923{
698 int i; 924 int i;
699 925
700 for (i = 0; i < eventcnt; ++i) 926 for (i = 0; i < eventcnt; ++i)
701 ev_feed_event (EV_A_ events [i], type); 927 ev_feed_event (EV_A_ events [i], type);
702} 928}
703 929
704/*****************************************************************************/ 930/*****************************************************************************/
705 931
706void inline_speed 932inline_speed void
707fd_event (EV_P_ int fd, int revents) 933fd_event_nocheck (EV_P_ int fd, int revents)
708{ 934{
709 ANFD *anfd = anfds + fd; 935 ANFD *anfd = anfds + fd;
710 ev_io *w; 936 ev_io *w;
711 937
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 938 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
716 if (ev) 942 if (ev)
717 ev_feed_event (EV_A_ (W)w, ev); 943 ev_feed_event (EV_A_ (W)w, ev);
718 } 944 }
719} 945}
720 946
947/* do not submit kernel events for fds that have reify set */
948/* because that means they changed while we were polling for new events */
949inline_speed void
950fd_event (EV_P_ int fd, int revents)
951{
952 ANFD *anfd = anfds + fd;
953
954 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents);
956}
957
721void 958void
722ev_feed_fd_event (EV_P_ int fd, int revents) 959ev_feed_fd_event (EV_P_ int fd, int revents)
723{ 960{
724 if (fd >= 0 && fd < anfdmax) 961 if (fd >= 0 && fd < anfdmax)
725 fd_event (EV_A_ fd, revents); 962 fd_event_nocheck (EV_A_ fd, revents);
726} 963}
727 964
728void inline_size 965/* make sure the external fd watch events are in-sync */
966/* with the kernel/libev internal state */
967inline_size void
729fd_reify (EV_P) 968fd_reify (EV_P)
730{ 969{
731 int i; 970 int i;
732 971
733 for (i = 0; i < fdchangecnt; ++i) 972 for (i = 0; i < fdchangecnt; ++i)
734 { 973 {
735 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
736 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
737 ev_io *w; 976 ev_io *w;
738 977
739 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
740 980
741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
742 events |= (unsigned char)w->events;
743 982
744#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
745 if (events) 984 if (o_reify & EV__IOFDSET)
746 { 985 {
747 unsigned long arg; 986 unsigned long arg;
748 #ifdef EV_FD_TO_WIN32_HANDLE
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750 #else
751 anfd->handle = _get_osfhandle (fd);
752 #endif
753 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
754 } 990 }
755#endif 991#endif
756 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
757 { 994 {
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
761 anfd->reify = 0;
762 anfd->events = events; 995 anfd->events = 0;
763 996
764 if (o_events != events || o_reify & EV_IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
766 }
767 } 1006 }
768 1007
769 fdchangecnt = 0; 1008 fdchangecnt = 0;
770} 1009}
771 1010
772void inline_size 1011/* something about the given fd changed */
1012inline_size void
773fd_change (EV_P_ int fd, int flags) 1013fd_change (EV_P_ int fd, int flags)
774{ 1014{
775 unsigned char reify = anfds [fd].reify; 1015 unsigned char reify = anfds [fd].reify;
776 anfds [fd].reify |= flags; 1016 anfds [fd].reify |= flags;
777 1017
… …
781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782 fdchanges [fdchangecnt - 1] = fd; 1022 fdchanges [fdchangecnt - 1] = fd;
783 } 1023 }
784} 1024}
785 1025
786void inline_speed 1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void
787fd_kill (EV_P_ int fd) 1028fd_kill (EV_P_ int fd)
788{ 1029{
789 ev_io *w; 1030 ev_io *w;
790 1031
791 while ((w = (ev_io *)anfds [fd].head)) 1032 while ((w = (ev_io *)anfds [fd].head))
… …
793 ev_io_stop (EV_A_ w); 1034 ev_io_stop (EV_A_ w);
794 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
795 } 1036 }
796} 1037}
797 1038
798int inline_size 1039/* check whether the given fd is actually valid, for error recovery */
1040inline_size int
799fd_valid (int fd) 1041fd_valid (int fd)
800{ 1042{
801#ifdef _WIN32 1043#ifdef _WIN32
802 return _get_osfhandle (fd) != -1; 1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
803#else 1045#else
804 return fcntl (fd, F_GETFD) != -1; 1046 return fcntl (fd, F_GETFD) != -1;
805#endif 1047#endif
806} 1048}
807 1049
… …
825 1067
826 for (fd = anfdmax; fd--; ) 1068 for (fd = anfdmax; fd--; )
827 if (anfds [fd].events) 1069 if (anfds [fd].events)
828 { 1070 {
829 fd_kill (EV_A_ fd); 1071 fd_kill (EV_A_ fd);
830 return; 1072 break;
831 } 1073 }
832} 1074}
833 1075
834/* usually called after fork if backend needs to re-arm all fds from scratch */ 1076/* usually called after fork if backend needs to re-arm all fds from scratch */
835static void noinline 1077static void noinline
… …
840 for (fd = 0; fd < anfdmax; ++fd) 1082 for (fd = 0; fd < anfdmax; ++fd)
841 if (anfds [fd].events) 1083 if (anfds [fd].events)
842 { 1084 {
843 anfds [fd].events = 0; 1085 anfds [fd].events = 0;
844 anfds [fd].emask = 0; 1086 anfds [fd].emask = 0;
845 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1087 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846 } 1088 }
847} 1089}
848 1090
1091/* used to prepare libev internal fd's */
1092/* this is not fork-safe */
1093inline_speed void
1094fd_intern (int fd)
1095{
1096#ifdef _WIN32
1097 unsigned long arg = 1;
1098 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1099#else
1100 fcntl (fd, F_SETFD, FD_CLOEXEC);
1101 fcntl (fd, F_SETFL, O_NONBLOCK);
1102#endif
1103}
1104
849/*****************************************************************************/ 1105/*****************************************************************************/
850 1106
851/* 1107/*
852 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
853 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
854 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
855 */ 1111 */
856 1112
857/* 1113/*
… …
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1122#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1123#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k)) 1124#define UPHEAP_DONE(p,k) ((p) == (k))
869 1125
870/* away from the root */ 1126/* away from the root */
871void inline_speed 1127inline_speed void
872downheap (ANHE *heap, int N, int k) 1128downheap (ANHE *heap, int N, int k)
873{ 1129{
874 ANHE he = heap [k]; 1130 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0; 1131 ANHE *E = heap + N + HEAP0;
876 1132
… …
916#define HEAP0 1 1172#define HEAP0 1
917#define HPARENT(k) ((k) >> 1) 1173#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p)) 1174#define UPHEAP_DONE(p,k) (!(p))
919 1175
920/* away from the root */ 1176/* away from the root */
921void inline_speed 1177inline_speed void
922downheap (ANHE *heap, int N, int k) 1178downheap (ANHE *heap, int N, int k)
923{ 1179{
924 ANHE he = heap [k]; 1180 ANHE he = heap [k];
925 1181
926 for (;;) 1182 for (;;)
927 { 1183 {
928 int c = k << 1; 1184 int c = k << 1;
929 1185
930 if (c > N + HEAP0 - 1) 1186 if (c >= N + HEAP0)
931 break; 1187 break;
932 1188
933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1189 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
934 ? 1 : 0; 1190 ? 1 : 0;
935 1191
… …
946 ev_active (ANHE_w (he)) = k; 1202 ev_active (ANHE_w (he)) = k;
947} 1203}
948#endif 1204#endif
949 1205
950/* towards the root */ 1206/* towards the root */
951void inline_speed 1207inline_speed void
952upheap (ANHE *heap, int k) 1208upheap (ANHE *heap, int k)
953{ 1209{
954 ANHE he = heap [k]; 1210 ANHE he = heap [k];
955 1211
956 for (;;) 1212 for (;;)
… …
967 1223
968 heap [k] = he; 1224 heap [k] = he;
969 ev_active (ANHE_w (he)) = k; 1225 ev_active (ANHE_w (he)) = k;
970} 1226}
971 1227
972void inline_size 1228/* move an element suitably so it is in a correct place */
1229inline_size void
973adjustheap (ANHE *heap, int N, int k) 1230adjustheap (ANHE *heap, int N, int k)
974{ 1231{
975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1232 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
976 upheap (heap, k); 1233 upheap (heap, k);
977 else 1234 else
978 downheap (heap, N, k); 1235 downheap (heap, N, k);
979} 1236}
980 1237
981/* rebuild the heap: this function is used only once and executed rarely */ 1238/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size 1239inline_size void
983reheap (ANHE *heap, int N) 1240reheap (ANHE *heap, int N)
984{ 1241{
985 int i; 1242 int i;
986 1243
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1244 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
990 upheap (heap, i + HEAP0); 1247 upheap (heap, i + HEAP0);
991} 1248}
992 1249
993/*****************************************************************************/ 1250/*****************************************************************************/
994 1251
1252/* associate signal watchers to a signal signal */
995typedef struct 1253typedef struct
996{ 1254{
1255 EV_ATOMIC_T pending;
1256#if EV_MULTIPLICITY
1257 EV_P;
1258#endif
997 WL head; 1259 WL head;
998 EV_ATOMIC_T gotsig;
999} ANSIG; 1260} ANSIG;
1000 1261
1001static ANSIG *signals; 1262static ANSIG signals [EV_NSIG - 1];
1002static int signalmax;
1003
1004static EV_ATOMIC_T gotsig;
1005 1263
1006/*****************************************************************************/ 1264/*****************************************************************************/
1007 1265
1008void inline_speed 1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1009fd_intern (int fd)
1010{
1011#ifdef _WIN32
1012 unsigned long arg = 1;
1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1014#else
1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
1016 fcntl (fd, F_SETFL, O_NONBLOCK);
1017#endif
1018}
1019 1267
1020static void noinline 1268static void noinline
1021evpipe_init (EV_P) 1269evpipe_init (EV_P)
1022{ 1270{
1023 if (!ev_is_active (&pipeev)) 1271 if (!ev_is_active (&pipe_w))
1024 { 1272 {
1025#if EV_USE_EVENTFD 1273# if EV_USE_EVENTFD
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL)
1026 if ((evfd = eventfd (0, 0)) >= 0) 1276 evfd = eventfd (0, 0);
1277
1278 if (evfd >= 0)
1027 { 1279 {
1028 evpipe [0] = -1; 1280 evpipe [0] = -1;
1029 fd_intern (evfd); 1281 fd_intern (evfd); /* doing it twice doesn't hurt */
1030 ev_io_set (&pipeev, evfd, EV_READ); 1282 ev_io_set (&pipe_w, evfd, EV_READ);
1031 } 1283 }
1032 else 1284 else
1033#endif 1285# endif
1034 { 1286 {
1035 while (pipe (evpipe)) 1287 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe"); 1288 ev_syserr ("(libev) error creating signal/async pipe");
1037 1289
1038 fd_intern (evpipe [0]); 1290 fd_intern (evpipe [0]);
1039 fd_intern (evpipe [1]); 1291 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ); 1292 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041 } 1293 }
1042 1294
1043 ev_io_start (EV_A_ &pipeev); 1295 ev_io_start (EV_A_ &pipe_w);
1044 ev_unref (EV_A); /* watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 } 1297 }
1046} 1298}
1047 1299
1048void inline_size 1300inline_size void
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{ 1302{
1051 if (!*flag) 1303 if (!*flag)
1052 { 1304 {
1053 int old_errno = errno; /* save errno because write might clobber it */ 1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1054 1307
1055 *flag = 1; 1308 *flag = 1;
1056 1309
1057#if EV_USE_EVENTFD 1310#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1311 if (evfd >= 0)
… …
1060 uint64_t counter = 1; 1313 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1062 } 1315 }
1063 else 1316 else
1064#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1065 write (evpipe [1], &old_errno, 1); 1323 write (evpipe [1], &dummy, 1);
1066 1324
1067 errno = old_errno; 1325 errno = old_errno;
1068 } 1326 }
1069} 1327}
1070 1328
1329/* called whenever the libev signal pipe */
1330/* got some events (signal, async) */
1071static void 1331static void
1072pipecb (EV_P_ ev_io *iow, int revents) 1332pipecb (EV_P_ ev_io *iow, int revents)
1073{ 1333{
1334 int i;
1335
1074#if EV_USE_EVENTFD 1336#if EV_USE_EVENTFD
1075 if (evfd >= 0) 1337 if (evfd >= 0)
1076 { 1338 {
1077 uint64_t counter; 1339 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t)); 1340 read (evfd, &counter, sizeof (uint64_t));
1079 } 1341 }
1080 else 1342 else
1081#endif 1343#endif
1082 { 1344 {
1083 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1084 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1085 } 1348 }
1086 1349
1087 if (gotsig && ev_is_default_loop (EV_A)) 1350 if (sig_pending)
1088 { 1351 {
1089 int signum; 1352 sig_pending = 0;
1090 gotsig = 0;
1091 1353
1092 for (signum = signalmax; signum--; ) 1354 for (i = EV_NSIG - 1; i--; )
1093 if (signals [signum].gotsig) 1355 if (expect_false (signals [i].pending))
1094 ev_feed_signal_event (EV_A_ signum + 1); 1356 ev_feed_signal_event (EV_A_ i + 1);
1095 } 1357 }
1096 1358
1097#if EV_ASYNC_ENABLE 1359#if EV_ASYNC_ENABLE
1098 if (gotasync) 1360 if (async_pending)
1099 { 1361 {
1100 int i; 1362 async_pending = 0;
1101 gotasync = 0;
1102 1363
1103 for (i = asynccnt; i--; ) 1364 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent) 1365 if (asyncs [i]->sent)
1105 { 1366 {
1106 asyncs [i]->sent = 0; 1367 asyncs [i]->sent = 0;
… …
1114 1375
1115static void 1376static void
1116ev_sighandler (int signum) 1377ev_sighandler (int signum)
1117{ 1378{
1118#if EV_MULTIPLICITY 1379#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct; 1380 EV_P = signals [signum - 1].loop;
1120#endif 1381#endif
1121 1382
1122#if _WIN32 1383#ifdef _WIN32
1123 signal (signum, ev_sighandler); 1384 signal (signum, ev_sighandler);
1124#endif 1385#endif
1125 1386
1126 signals [signum - 1].gotsig = 1; 1387 signals [signum - 1].pending = 1;
1127 evpipe_write (EV_A_ &gotsig); 1388 evpipe_write (EV_A_ &sig_pending);
1128} 1389}
1129 1390
1130void noinline 1391void noinline
1131ev_feed_signal_event (EV_P_ int signum) 1392ev_feed_signal_event (EV_P_ int signum)
1132{ 1393{
1133 WL w; 1394 WL w;
1134 1395
1396 if (expect_false (signum <= 0 || signum > EV_NSIG))
1397 return;
1398
1399 --signum;
1400
1135#if EV_MULTIPLICITY 1401#if EV_MULTIPLICITY
1136 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1402 /* it is permissible to try to feed a signal to the wrong loop */
1137#endif 1403 /* or, likely more useful, feeding a signal nobody is waiting for */
1138 1404
1139 --signum; 1405 if (expect_false (signals [signum].loop != EV_A))
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return; 1406 return;
1407#endif
1143 1408
1144 signals [signum].gotsig = 0; 1409 signals [signum].pending = 0;
1145 1410
1146 for (w = signals [signum].head; w; w = w->next) 1411 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148} 1413}
1149 1414
1415#if EV_USE_SIGNALFD
1416static void
1417sigfdcb (EV_P_ ev_io *iow, int revents)
1418{
1419 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1420
1421 for (;;)
1422 {
1423 ssize_t res = read (sigfd, si, sizeof (si));
1424
1425 /* not ISO-C, as res might be -1, but works with SuS */
1426 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1427 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1428
1429 if (res < (ssize_t)sizeof (si))
1430 break;
1431 }
1432}
1433#endif
1434
1435#endif
1436
1150/*****************************************************************************/ 1437/*****************************************************************************/
1151 1438
1439#if EV_CHILD_ENABLE
1152static WL childs [EV_PID_HASHSIZE]; 1440static WL childs [EV_PID_HASHSIZE];
1153
1154#ifndef _WIN32
1155 1441
1156static ev_signal childev; 1442static ev_signal childev;
1157 1443
1158#ifndef WIFCONTINUED 1444#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0 1445# define WIFCONTINUED(status) 0
1160#endif 1446#endif
1161 1447
1162void inline_speed 1448/* handle a single child status event */
1449inline_speed void
1163child_reap (EV_P_ int chain, int pid, int status) 1450child_reap (EV_P_ int chain, int pid, int status)
1164{ 1451{
1165 ev_child *w; 1452 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1453 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167 1454
1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1455 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 { 1456 {
1170 if ((w->pid == pid || !w->pid) 1457 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1))) 1458 && (!traced || (w->flags & 1)))
1172 { 1459 {
1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1460 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1180 1467
1181#ifndef WCONTINUED 1468#ifndef WCONTINUED
1182# define WCONTINUED 0 1469# define WCONTINUED 0
1183#endif 1470#endif
1184 1471
1472/* called on sigchld etc., calls waitpid */
1185static void 1473static void
1186childcb (EV_P_ ev_signal *sw, int revents) 1474childcb (EV_P_ ev_signal *sw, int revents)
1187{ 1475{
1188 int pid, status; 1476 int pid, status;
1189 1477
… …
1197 /* make sure we are called again until all children have been reaped */ 1485 /* make sure we are called again until all children have been reaped */
1198 /* we need to do it this way so that the callback gets called before we continue */ 1486 /* we need to do it this way so that the callback gets called before we continue */
1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1487 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1200 1488
1201 child_reap (EV_A_ pid, pid, status); 1489 child_reap (EV_A_ pid, pid, status);
1202 if (EV_PID_HASHSIZE > 1) 1490 if ((EV_PID_HASHSIZE) > 1)
1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1491 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1204} 1492}
1205 1493
1206#endif 1494#endif
1207 1495
1208/*****************************************************************************/ 1496/*****************************************************************************/
1209 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1210#if EV_USE_PORT 1501#if EV_USE_PORT
1211# include "ev_port.c" 1502# include "ev_port.c"
1212#endif 1503#endif
1213#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1214# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1270 /* kqueue is borked on everything but netbsd apparently */ 1561 /* kqueue is borked on everything but netbsd apparently */
1271 /* it usually doesn't work correctly on anything but sockets and pipes */ 1562 /* it usually doesn't work correctly on anything but sockets and pipes */
1272 flags &= ~EVBACKEND_KQUEUE; 1563 flags &= ~EVBACKEND_KQUEUE;
1273#endif 1564#endif
1274#ifdef __APPLE__ 1565#ifdef __APPLE__
1275 // flags &= ~EVBACKEND_KQUEUE; for documentation 1566 /* only select works correctly on that "unix-certified" platform */
1276 flags &= ~EVBACKEND_POLL; 1567 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1568 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1569#endif
1570#ifdef __FreeBSD__
1571 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1277#endif 1572#endif
1278 1573
1279 return flags; 1574 return flags;
1280} 1575}
1281 1576
… …
1283ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1284{ 1579{
1285 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1286 1581
1287 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1288 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1289 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1290 1585
1291 return flags; 1586 return flags;
1292} 1587}
1293 1588
1294unsigned int 1589unsigned int
1295ev_backend (EV_P) 1590ev_backend (EV_P)
1296{ 1591{
1297 return backend; 1592 return backend;
1298} 1593}
1299 1594
1595#if EV_FEATURE_API
1300unsigned int 1596unsigned int
1301ev_loop_count (EV_P) 1597ev_iteration (EV_P)
1302{ 1598{
1303 return loop_count; 1599 return loop_count;
1304} 1600}
1305 1601
1602unsigned int
1603ev_depth (EV_P)
1604{
1605 return loop_depth;
1606}
1607
1306void 1608void
1307ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308{ 1610{
1309 io_blocktime = interval; 1611 io_blocktime = interval;
1310} 1612}
… …
1313ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314{ 1616{
1315 timeout_blocktime = interval; 1617 timeout_blocktime = interval;
1316} 1618}
1317 1619
1620void
1621ev_set_userdata (EV_P_ void *data)
1622{
1623 userdata = data;
1624}
1625
1626void *
1627ev_userdata (EV_P)
1628{
1629 return userdata;
1630}
1631
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1633{
1634 invoke_cb = invoke_pending_cb;
1635}
1636
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1638{
1639 release_cb = release;
1640 acquire_cb = acquire;
1641}
1642#endif
1643
1644/* initialise a loop structure, must be zero-initialised */
1318static void noinline 1645static void noinline
1319loop_init (EV_P_ unsigned int flags) 1646loop_init (EV_P_ unsigned int flags)
1320{ 1647{
1321 if (!backend) 1648 if (!backend)
1322 { 1649 {
1650#if EV_USE_REALTIME
1651 if (!have_realtime)
1652 {
1653 struct timespec ts;
1654
1655 if (!clock_gettime (CLOCK_REALTIME, &ts))
1656 have_realtime = 1;
1657 }
1658#endif
1659
1323#if EV_USE_MONOTONIC 1660#if EV_USE_MONOTONIC
1661 if (!have_monotonic)
1324 { 1662 {
1325 struct timespec ts; 1663 struct timespec ts;
1664
1326 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1665 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327 have_monotonic = 1; 1666 have_monotonic = 1;
1328 } 1667 }
1329#endif 1668#endif
1669
1670 /* pid check not overridable via env */
1671#ifndef _WIN32
1672 if (flags & EVFLAG_FORKCHECK)
1673 curpid = getpid ();
1674#endif
1675
1676 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS"));
1330 1680
1331 ev_rt_now = ev_time (); 1681 ev_rt_now = ev_time ();
1332 mn_now = get_clock (); 1682 mn_now = get_clock ();
1333 now_floor = mn_now; 1683 now_floor = mn_now;
1334 rtmn_diff = ev_rt_now - mn_now; 1684 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending;
1687#endif
1335 1688
1336 io_blocktime = 0.; 1689 io_blocktime = 0.;
1337 timeout_blocktime = 0.; 1690 timeout_blocktime = 0.;
1338 backend = 0; 1691 backend = 0;
1339 backend_fd = -1; 1692 backend_fd = -1;
1340 gotasync = 0; 1693 sig_pending = 0;
1694#if EV_ASYNC_ENABLE
1695 async_pending = 0;
1696#endif
1341#if EV_USE_INOTIFY 1697#if EV_USE_INOTIFY
1342 fs_fd = -2; 1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1343#endif 1699#endif
1344 1700#if EV_USE_SIGNALFD
1345 /* pid check not overridable via env */ 1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1346#ifndef _WIN32
1347 if (flags & EVFLAG_FORKCHECK)
1348 curpid = getpid ();
1349#endif 1702#endif
1350
1351 if (!(flags & EVFLAG_NOENV)
1352 && !enable_secure ()
1353 && getenv ("LIBEV_FLAGS"))
1354 flags = atoi (getenv ("LIBEV_FLAGS"));
1355 1703
1356 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1357 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1358 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1359#if EV_USE_PORT 1710#if EV_USE_PORT
1360 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1361#endif 1712#endif
1362#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1363 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1370#endif 1721#endif
1371#if EV_USE_SELECT 1722#if EV_USE_SELECT
1372 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373#endif 1724#endif
1374 1725
1726 ev_prepare_init (&pending_w, pendingcb);
1727
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1375 ev_init (&pipeev, pipecb); 1729 ev_init (&pipe_w, pipecb);
1376 ev_set_priority (&pipeev, EV_MAXPRI); 1730 ev_set_priority (&pipe_w, EV_MAXPRI);
1731#endif
1377 } 1732 }
1378} 1733}
1379 1734
1380static void noinline 1735/* free up a loop structure */
1736void
1381loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1382{ 1738{
1383 int i; 1739 int i;
1384 1740
1741#if EV_CLEANUP_ENABLE
1742 /* queue cleanup watchers (and execute them) */
1743 if (expect_false (cleanupcnt))
1744 {
1745 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1746 EV_INVOKE_PENDING;
1747 }
1748#endif
1749
1750#if EV_CHILD_ENABLE
1751 if (ev_is_active (&childev))
1752 {
1753 ev_ref (EV_A); /* child watcher */
1754 ev_signal_stop (EV_A_ &childev);
1755 }
1756#endif
1757
1385 if (ev_is_active (&pipeev)) 1758 if (ev_is_active (&pipe_w))
1386 { 1759 {
1387 ev_ref (EV_A); /* signal watcher */ 1760 /*ev_ref (EV_A);*/
1388 ev_io_stop (EV_A_ &pipeev); 1761 /*ev_io_stop (EV_A_ &pipe_w);*/
1389 1762
1390#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1391 if (evfd >= 0) 1764 if (evfd >= 0)
1392 close (evfd); 1765 close (evfd);
1393#endif 1766#endif
1394 1767
1395 if (evpipe [0] >= 0) 1768 if (evpipe [0] >= 0)
1396 { 1769 {
1397 close (evpipe [0]); 1770 EV_WIN32_CLOSE_FD (evpipe [0]);
1398 close (evpipe [1]); 1771 EV_WIN32_CLOSE_FD (evpipe [1]);
1399 } 1772 }
1400 } 1773 }
1774
1775#if EV_USE_SIGNALFD
1776 if (ev_is_active (&sigfd_w))
1777 close (sigfd);
1778#endif
1401 1779
1402#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1403 if (fs_fd >= 0) 1781 if (fs_fd >= 0)
1404 close (fs_fd); 1782 close (fs_fd);
1405#endif 1783#endif
1406 1784
1407 if (backend_fd >= 0) 1785 if (backend_fd >= 0)
1408 close (backend_fd); 1786 close (backend_fd);
1409 1787
1788#if EV_USE_IOCP
1789 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1790#endif
1410#if EV_USE_PORT 1791#if EV_USE_PORT
1411 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1792 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1412#endif 1793#endif
1413#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1414 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1795 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1429#if EV_IDLE_ENABLE 1810#if EV_IDLE_ENABLE
1430 array_free (idle, [i]); 1811 array_free (idle, [i]);
1431#endif 1812#endif
1432 } 1813 }
1433 1814
1434 ev_free (anfds); anfdmax = 0; 1815 ev_free (anfds); anfds = 0; anfdmax = 0;
1435 1816
1436 /* have to use the microsoft-never-gets-it-right macro */ 1817 /* have to use the microsoft-never-gets-it-right macro */
1818 array_free (rfeed, EMPTY);
1437 array_free (fdchange, EMPTY); 1819 array_free (fdchange, EMPTY);
1438 array_free (timer, EMPTY); 1820 array_free (timer, EMPTY);
1439#if EV_PERIODIC_ENABLE 1821#if EV_PERIODIC_ENABLE
1440 array_free (periodic, EMPTY); 1822 array_free (periodic, EMPTY);
1441#endif 1823#endif
1442#if EV_FORK_ENABLE 1824#if EV_FORK_ENABLE
1443 array_free (fork, EMPTY); 1825 array_free (fork, EMPTY);
1444#endif 1826#endif
1827#if EV_CLEANUP_ENABLE
1828 array_free (cleanup, EMPTY);
1829#endif
1445 array_free (prepare, EMPTY); 1830 array_free (prepare, EMPTY);
1446 array_free (check, EMPTY); 1831 array_free (check, EMPTY);
1447#if EV_ASYNC_ENABLE 1832#if EV_ASYNC_ENABLE
1448 array_free (async, EMPTY); 1833 array_free (async, EMPTY);
1449#endif 1834#endif
1450 1835
1451 backend = 0; 1836 backend = 0;
1837
1838#if EV_MULTIPLICITY
1839 if (ev_is_default_loop (EV_A))
1840#endif
1841 ev_default_loop_ptr = 0;
1842#if EV_MULTIPLICITY
1843 else
1844 ev_free (EV_A);
1845#endif
1452} 1846}
1453 1847
1454#if EV_USE_INOTIFY 1848#if EV_USE_INOTIFY
1455void inline_size infy_fork (EV_P); 1849inline_size void infy_fork (EV_P);
1456#endif 1850#endif
1457 1851
1458void inline_size 1852inline_size void
1459loop_fork (EV_P) 1853loop_fork (EV_P)
1460{ 1854{
1461#if EV_USE_PORT 1855#if EV_USE_PORT
1462 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1856 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463#endif 1857#endif
… …
1469#endif 1863#endif
1470#if EV_USE_INOTIFY 1864#if EV_USE_INOTIFY
1471 infy_fork (EV_A); 1865 infy_fork (EV_A);
1472#endif 1866#endif
1473 1867
1474 if (ev_is_active (&pipeev)) 1868 if (ev_is_active (&pipe_w))
1475 { 1869 {
1476 /* this "locks" the handlers against writing to the pipe */ 1870 /* this "locks" the handlers against writing to the pipe */
1477 /* while we modify the fd vars */ 1871 /* while we modify the fd vars */
1478 gotsig = 1; 1872 sig_pending = 1;
1479#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1480 gotasync = 1; 1874 async_pending = 1;
1481#endif 1875#endif
1482 1876
1483 ev_ref (EV_A); 1877 ev_ref (EV_A);
1484 ev_io_stop (EV_A_ &pipeev); 1878 ev_io_stop (EV_A_ &pipe_w);
1485 1879
1486#if EV_USE_EVENTFD 1880#if EV_USE_EVENTFD
1487 if (evfd >= 0) 1881 if (evfd >= 0)
1488 close (evfd); 1882 close (evfd);
1489#endif 1883#endif
1490 1884
1491 if (evpipe [0] >= 0) 1885 if (evpipe [0] >= 0)
1492 { 1886 {
1493 close (evpipe [0]); 1887 EV_WIN32_CLOSE_FD (evpipe [0]);
1494 close (evpipe [1]); 1888 EV_WIN32_CLOSE_FD (evpipe [1]);
1495 } 1889 }
1496 1890
1891#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1497 evpipe_init (EV_A); 1892 evpipe_init (EV_A);
1498 /* now iterate over everything, in case we missed something */ 1893 /* now iterate over everything, in case we missed something */
1499 pipecb (EV_A_ &pipeev, EV_READ); 1894 pipecb (EV_A_ &pipe_w, EV_READ);
1895#endif
1500 } 1896 }
1501 1897
1502 postfork = 0; 1898 postfork = 0;
1503} 1899}
1504 1900
1505#if EV_MULTIPLICITY 1901#if EV_MULTIPLICITY
1506 1902
1507struct ev_loop * 1903struct ev_loop *
1508ev_loop_new (unsigned int flags) 1904ev_loop_new (unsigned int flags)
1509{ 1905{
1510 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1906 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1511 1907
1512 memset (loop, 0, sizeof (struct ev_loop)); 1908 memset (EV_A, 0, sizeof (struct ev_loop));
1513
1514 loop_init (EV_A_ flags); 1909 loop_init (EV_A_ flags);
1515 1910
1516 if (ev_backend (EV_A)) 1911 if (ev_backend (EV_A))
1517 return loop; 1912 return EV_A;
1518 1913
1914 ev_free (EV_A);
1519 return 0; 1915 return 0;
1520} 1916}
1521 1917
1522void 1918#endif /* multiplicity */
1523ev_loop_destroy (EV_P)
1524{
1525 loop_destroy (EV_A);
1526 ev_free (loop);
1527}
1528
1529void
1530ev_loop_fork (EV_P)
1531{
1532 postfork = 1; /* must be in line with ev_default_fork */
1533}
1534 1919
1535#if EV_VERIFY 1920#if EV_VERIFY
1536static void noinline 1921static void noinline
1537verify_watcher (EV_P_ W w) 1922verify_watcher (EV_P_ W w)
1538{ 1923{
1539 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1924 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540 1925
1541 if (w->pending) 1926 if (w->pending)
1542 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1927 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543} 1928}
1544 1929
1545static void noinline 1930static void noinline
1546verify_heap (EV_P_ ANHE *heap, int N) 1931verify_heap (EV_P_ ANHE *heap, int N)
1547{ 1932{
1548 int i; 1933 int i;
1549 1934
1550 for (i = HEAP0; i < N + HEAP0; ++i) 1935 for (i = HEAP0; i < N + HEAP0; ++i)
1551 { 1936 {
1552 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1937 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1553 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1938 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1554 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1939 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555 1940
1556 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1941 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557 } 1942 }
1558} 1943}
1559 1944
1560static void noinline 1945static void noinline
1561array_verify (EV_P_ W *ws, int cnt) 1946array_verify (EV_P_ W *ws, int cnt)
1562{ 1947{
1563 while (cnt--) 1948 while (cnt--)
1564 { 1949 {
1565 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1950 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566 verify_watcher (EV_A_ ws [cnt]); 1951 verify_watcher (EV_A_ ws [cnt]);
1567 } 1952 }
1568} 1953}
1569#endif 1954#endif
1570 1955
1956#if EV_FEATURE_API
1571void 1957void
1572ev_loop_verify (EV_P) 1958ev_verify (EV_P)
1573{ 1959{
1574#if EV_VERIFY 1960#if EV_VERIFY
1575 int i; 1961 int i;
1576 WL w; 1962 WL w;
1577 1963
1578 assert (activecnt >= -1); 1964 assert (activecnt >= -1);
1579 1965
1580 assert (fdchangemax >= fdchangecnt); 1966 assert (fdchangemax >= fdchangecnt);
1581 for (i = 0; i < fdchangecnt; ++i) 1967 for (i = 0; i < fdchangecnt; ++i)
1582 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1968 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583 1969
1584 assert (anfdmax >= 0); 1970 assert (anfdmax >= 0);
1585 for (i = 0; i < anfdmax; ++i) 1971 for (i = 0; i < anfdmax; ++i)
1586 for (w = anfds [i].head; w; w = w->next) 1972 for (w = anfds [i].head; w; w = w->next)
1587 { 1973 {
1588 verify_watcher (EV_A_ (W)w); 1974 verify_watcher (EV_A_ (W)w);
1589 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1975 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1590 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1976 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591 } 1977 }
1592 1978
1593 assert (timermax >= timercnt); 1979 assert (timermax >= timercnt);
1594 verify_heap (EV_A_ timers, timercnt); 1980 verify_heap (EV_A_ timers, timercnt);
1595 1981
… …
1611#if EV_FORK_ENABLE 1997#if EV_FORK_ENABLE
1612 assert (forkmax >= forkcnt); 1998 assert (forkmax >= forkcnt);
1613 array_verify (EV_A_ (W *)forks, forkcnt); 1999 array_verify (EV_A_ (W *)forks, forkcnt);
1614#endif 2000#endif
1615 2001
2002#if EV_CLEANUP_ENABLE
2003 assert (cleanupmax >= cleanupcnt);
2004 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2005#endif
2006
1616#if EV_ASYNC_ENABLE 2007#if EV_ASYNC_ENABLE
1617 assert (asyncmax >= asynccnt); 2008 assert (asyncmax >= asynccnt);
1618 array_verify (EV_A_ (W *)asyncs, asynccnt); 2009 array_verify (EV_A_ (W *)asyncs, asynccnt);
1619#endif 2010#endif
1620 2011
2012#if EV_PREPARE_ENABLE
1621 assert (preparemax >= preparecnt); 2013 assert (preparemax >= preparecnt);
1622 array_verify (EV_A_ (W *)prepares, preparecnt); 2014 array_verify (EV_A_ (W *)prepares, preparecnt);
2015#endif
1623 2016
2017#if EV_CHECK_ENABLE
1624 assert (checkmax >= checkcnt); 2018 assert (checkmax >= checkcnt);
1625 array_verify (EV_A_ (W *)checks, checkcnt); 2019 array_verify (EV_A_ (W *)checks, checkcnt);
2020#endif
1626 2021
1627# if 0 2022# if 0
2023#if EV_CHILD_ENABLE
1628 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2024 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1629 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2025 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2026#endif
1630# endif 2027# endif
1631#endif 2028#endif
1632} 2029}
1633 2030#endif
1634#endif /* multiplicity */
1635 2031
1636#if EV_MULTIPLICITY 2032#if EV_MULTIPLICITY
1637struct ev_loop * 2033struct ev_loop *
1638ev_default_loop_init (unsigned int flags)
1639#else 2034#else
1640int 2035int
2036#endif
1641ev_default_loop (unsigned int flags) 2037ev_default_loop (unsigned int flags)
1642#endif
1643{ 2038{
1644 if (!ev_default_loop_ptr) 2039 if (!ev_default_loop_ptr)
1645 { 2040 {
1646#if EV_MULTIPLICITY 2041#if EV_MULTIPLICITY
1647 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2042 EV_P = ev_default_loop_ptr = &default_loop_struct;
1648#else 2043#else
1649 ev_default_loop_ptr = 1; 2044 ev_default_loop_ptr = 1;
1650#endif 2045#endif
1651 2046
1652 loop_init (EV_A_ flags); 2047 loop_init (EV_A_ flags);
1653 2048
1654 if (ev_backend (EV_A)) 2049 if (ev_backend (EV_A))
1655 { 2050 {
1656#ifndef _WIN32 2051#if EV_CHILD_ENABLE
1657 ev_signal_init (&childev, childcb, SIGCHLD); 2052 ev_signal_init (&childev, childcb, SIGCHLD);
1658 ev_set_priority (&childev, EV_MAXPRI); 2053 ev_set_priority (&childev, EV_MAXPRI);
1659 ev_signal_start (EV_A_ &childev); 2054 ev_signal_start (EV_A_ &childev);
1660 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2055 ev_unref (EV_A); /* child watcher should not keep loop alive */
1661#endif 2056#endif
… …
1666 2061
1667 return ev_default_loop_ptr; 2062 return ev_default_loop_ptr;
1668} 2063}
1669 2064
1670void 2065void
1671ev_default_destroy (void) 2066ev_loop_fork (EV_P)
1672{ 2067{
1673#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr;
1675#endif
1676
1677 ev_default_loop_ptr = 0;
1678
1679#ifndef _WIN32
1680 ev_ref (EV_A); /* child watcher */
1681 ev_signal_stop (EV_A_ &childev);
1682#endif
1683
1684 loop_destroy (EV_A);
1685}
1686
1687void
1688ev_default_fork (void)
1689{
1690#if EV_MULTIPLICITY
1691 struct ev_loop *loop = ev_default_loop_ptr;
1692#endif
1693
1694 postfork = 1; /* must be in line with ev_loop_fork */ 2068 postfork = 1; /* must be in line with ev_default_fork */
1695} 2069}
1696 2070
1697/*****************************************************************************/ 2071/*****************************************************************************/
1698 2072
1699void 2073void
1700ev_invoke (EV_P_ void *w, int revents) 2074ev_invoke (EV_P_ void *w, int revents)
1701{ 2075{
1702 EV_CB_INVOKE ((W)w, revents); 2076 EV_CB_INVOKE ((W)w, revents);
1703} 2077}
1704 2078
1705void inline_speed 2079unsigned int
1706call_pending (EV_P) 2080ev_pending_count (EV_P)
2081{
2082 int pri;
2083 unsigned int count = 0;
2084
2085 for (pri = NUMPRI; pri--; )
2086 count += pendingcnt [pri];
2087
2088 return count;
2089}
2090
2091void noinline
2092ev_invoke_pending (EV_P)
1707{ 2093{
1708 int pri; 2094 int pri;
1709 2095
1710 for (pri = NUMPRI; pri--; ) 2096 for (pri = NUMPRI; pri--; )
1711 while (pendingcnt [pri]) 2097 while (pendingcnt [pri])
1712 { 2098 {
1713 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2099 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714 2100
1715 if (expect_true (p->w))
1716 {
1717 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2101 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2102 /* ^ this is no longer true, as pending_w could be here */
1718 2103
1719 p->w->pending = 0; 2104 p->w->pending = 0;
1720 EV_CB_INVOKE (p->w, p->events); 2105 EV_CB_INVOKE (p->w, p->events);
1721 EV_FREQUENT_CHECK; 2106 EV_FREQUENT_CHECK;
1722 }
1723 } 2107 }
1724} 2108}
1725 2109
1726#if EV_IDLE_ENABLE 2110#if EV_IDLE_ENABLE
1727void inline_size 2111/* make idle watchers pending. this handles the "call-idle */
2112/* only when higher priorities are idle" logic */
2113inline_size void
1728idle_reify (EV_P) 2114idle_reify (EV_P)
1729{ 2115{
1730 if (expect_false (idleall)) 2116 if (expect_false (idleall))
1731 { 2117 {
1732 int pri; 2118 int pri;
… …
1744 } 2130 }
1745 } 2131 }
1746} 2132}
1747#endif 2133#endif
1748 2134
1749void inline_size 2135/* make timers pending */
2136inline_size void
1750timers_reify (EV_P) 2137timers_reify (EV_P)
1751{ 2138{
1752 EV_FREQUENT_CHECK; 2139 EV_FREQUENT_CHECK;
1753 2140
1754 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2141 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755 { 2142 {
1756 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2143 do
1757
1758 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760 /* first reschedule or stop timer */
1761 if (w->repeat)
1762 { 2144 {
2145 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2146
2147 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2148
2149 /* first reschedule or stop timer */
2150 if (w->repeat)
2151 {
1763 ev_at (w) += w->repeat; 2152 ev_at (w) += w->repeat;
1764 if (ev_at (w) < mn_now) 2153 if (ev_at (w) < mn_now)
1765 ev_at (w) = mn_now; 2154 ev_at (w) = mn_now;
1766 2155
1767 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2156 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768 2157
1769 ANHE_at_cache (timers [HEAP0]); 2158 ANHE_at_cache (timers [HEAP0]);
1770 downheap (timers, timercnt, HEAP0); 2159 downheap (timers, timercnt, HEAP0);
2160 }
2161 else
2162 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2163
2164 EV_FREQUENT_CHECK;
2165 feed_reverse (EV_A_ (W)w);
1771 } 2166 }
1772 else 2167 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774 2168
1775 EV_FREQUENT_CHECK; 2169 feed_reverse_done (EV_A_ EV_TIMER);
1776 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1777 } 2170 }
1778} 2171}
1779 2172
1780#if EV_PERIODIC_ENABLE 2173#if EV_PERIODIC_ENABLE
1781void inline_size 2174/* make periodics pending */
2175inline_size void
1782periodics_reify (EV_P) 2176periodics_reify (EV_P)
1783{ 2177{
1784 EV_FREQUENT_CHECK; 2178 EV_FREQUENT_CHECK;
1785 2179
1786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787 { 2181 {
1788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2182 int feed_count = 0;
1789 2183
1790 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2184 do
1791
1792 /* first reschedule or stop timer */
1793 if (w->reschedule_cb)
1794 { 2185 {
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2187
2188 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2189
2190 /* first reschedule or stop timer */
2191 if (w->reschedule_cb)
2192 {
1795 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2193 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796 2194
1797 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2195 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798 2196
1799 ANHE_at_cache (periodics [HEAP0]); 2197 ANHE_at_cache (periodics [HEAP0]);
1800 downheap (periodics, periodiccnt, HEAP0); 2198 downheap (periodics, periodiccnt, HEAP0);
2199 }
2200 else if (w->interval)
2201 {
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2203 /* if next trigger time is not sufficiently in the future, put it there */
2204 /* this might happen because of floating point inexactness */
2205 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2206 {
2207 ev_at (w) += w->interval;
2208
2209 /* if interval is unreasonably low we might still have a time in the past */
2210 /* so correct this. this will make the periodic very inexact, but the user */
2211 /* has effectively asked to get triggered more often than possible */
2212 if (ev_at (w) < ev_rt_now)
2213 ev_at (w) = ev_rt_now;
2214 }
2215
2216 ANHE_at_cache (periodics [HEAP0]);
2217 downheap (periodics, periodiccnt, HEAP0);
2218 }
2219 else
2220 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2221
2222 EV_FREQUENT_CHECK;
2223 feed_reverse (EV_A_ (W)w);
1801 } 2224 }
1802 else if (w->interval) 2225 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1803 {
1804 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805 /* if next trigger time is not sufficiently in the future, put it there */
1806 /* this might happen because of floating point inexactness */
1807 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808 {
1809 ev_at (w) += w->interval;
1810 2226
1811 /* if interval is unreasonably low we might still have a time in the past */
1812 /* so correct this. this will make the periodic very inexact, but the user */
1813 /* has effectively asked to get triggered more often than possible */
1814 if (ev_at (w) < ev_rt_now)
1815 ev_at (w) = ev_rt_now;
1816 }
1817
1818 ANHE_at_cache (periodics [HEAP0]);
1819 downheap (periodics, periodiccnt, HEAP0);
1820 }
1821 else
1822 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824 EV_FREQUENT_CHECK;
1825 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2227 feed_reverse_done (EV_A_ EV_PERIODIC);
1826 } 2228 }
1827} 2229}
1828 2230
2231/* simply recalculate all periodics */
2232/* TODO: maybe ensure that at least one event happens when jumping forward? */
1829static void noinline 2233static void noinline
1830periodics_reschedule (EV_P) 2234periodics_reschedule (EV_P)
1831{ 2235{
1832 int i; 2236 int i;
1833 2237
… …
1846 2250
1847 reheap (periodics, periodiccnt); 2251 reheap (periodics, periodiccnt);
1848} 2252}
1849#endif 2253#endif
1850 2254
1851void inline_speed 2255/* adjust all timers by a given offset */
2256static void noinline
2257timers_reschedule (EV_P_ ev_tstamp adjust)
2258{
2259 int i;
2260
2261 for (i = 0; i < timercnt; ++i)
2262 {
2263 ANHE *he = timers + i + HEAP0;
2264 ANHE_w (*he)->at += adjust;
2265 ANHE_at_cache (*he);
2266 }
2267}
2268
2269/* fetch new monotonic and realtime times from the kernel */
2270/* also detect if there was a timejump, and act accordingly */
2271inline_speed void
1852time_update (EV_P_ ev_tstamp max_block) 2272time_update (EV_P_ ev_tstamp max_block)
1853{ 2273{
1854 int i;
1855
1856#if EV_USE_MONOTONIC 2274#if EV_USE_MONOTONIC
1857 if (expect_true (have_monotonic)) 2275 if (expect_true (have_monotonic))
1858 { 2276 {
2277 int i;
1859 ev_tstamp odiff = rtmn_diff; 2278 ev_tstamp odiff = rtmn_diff;
1860 2279
1861 mn_now = get_clock (); 2280 mn_now = get_clock ();
1862 2281
1863 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2282 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1889 ev_rt_now = ev_time (); 2308 ev_rt_now = ev_time ();
1890 mn_now = get_clock (); 2309 mn_now = get_clock ();
1891 now_floor = mn_now; 2310 now_floor = mn_now;
1892 } 2311 }
1893 2312
2313 /* no timer adjustment, as the monotonic clock doesn't jump */
2314 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894# if EV_PERIODIC_ENABLE 2315# if EV_PERIODIC_ENABLE
1895 periodics_reschedule (EV_A); 2316 periodics_reschedule (EV_A);
1896# endif 2317# endif
1897 /* no timer adjustment, as the monotonic clock doesn't jump */
1898 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899 } 2318 }
1900 else 2319 else
1901#endif 2320#endif
1902 { 2321 {
1903 ev_rt_now = ev_time (); 2322 ev_rt_now = ev_time ();
1904 2323
1905 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2324 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1906 { 2325 {
2326 /* adjust timers. this is easy, as the offset is the same for all of them */
2327 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1907#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
1908 periodics_reschedule (EV_A); 2329 periodics_reschedule (EV_A);
1909#endif 2330#endif
1910 /* adjust timers. this is easy, as the offset is the same for all of them */
1911 for (i = 0; i < timercnt; ++i)
1912 {
1913 ANHE *he = timers + i + HEAP0;
1914 ANHE_w (*he)->at += ev_rt_now - mn_now;
1915 ANHE_at_cache (*he);
1916 }
1917 } 2331 }
1918 2332
1919 mn_now = ev_rt_now; 2333 mn_now = ev_rt_now;
1920 } 2334 }
1921} 2335}
1922 2336
1923void 2337void
1924ev_ref (EV_P)
1925{
1926 ++activecnt;
1927}
1928
1929void
1930ev_unref (EV_P)
1931{
1932 --activecnt;
1933}
1934
1935void
1936ev_now_update (EV_P)
1937{
1938 time_update (EV_A_ 1e100);
1939}
1940
1941static int loop_done;
1942
1943void
1944ev_loop (EV_P_ int flags) 2338ev_run (EV_P_ int flags)
1945{ 2339{
2340#if EV_FEATURE_API
2341 ++loop_depth;
2342#endif
2343
2344 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2345
1946 loop_done = EVUNLOOP_CANCEL; 2346 loop_done = EVBREAK_CANCEL;
1947 2347
1948 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2348 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1949 2349
1950 do 2350 do
1951 { 2351 {
1952#if EV_VERIFY >= 2 2352#if EV_VERIFY >= 2
1953 ev_loop_verify (EV_A); 2353 ev_verify (EV_A);
1954#endif 2354#endif
1955 2355
1956#ifndef _WIN32 2356#ifndef _WIN32
1957 if (expect_false (curpid)) /* penalise the forking check even more */ 2357 if (expect_false (curpid)) /* penalise the forking check even more */
1958 if (expect_false (getpid () != curpid)) 2358 if (expect_false (getpid () != curpid))
… …
1966 /* we might have forked, so queue fork handlers */ 2366 /* we might have forked, so queue fork handlers */
1967 if (expect_false (postfork)) 2367 if (expect_false (postfork))
1968 if (forkcnt) 2368 if (forkcnt)
1969 { 2369 {
1970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2370 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971 call_pending (EV_A); 2371 EV_INVOKE_PENDING;
1972 } 2372 }
1973#endif 2373#endif
1974 2374
2375#if EV_PREPARE_ENABLE
1975 /* queue prepare watchers (and execute them) */ 2376 /* queue prepare watchers (and execute them) */
1976 if (expect_false (preparecnt)) 2377 if (expect_false (preparecnt))
1977 { 2378 {
1978 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2379 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979 call_pending (EV_A); 2380 EV_INVOKE_PENDING;
1980 } 2381 }
2382#endif
1981 2383
1982 if (expect_false (!activecnt)) 2384 if (expect_false (loop_done))
1983 break; 2385 break;
1984 2386
1985 /* we might have forked, so reify kernel state if necessary */ 2387 /* we might have forked, so reify kernel state if necessary */
1986 if (expect_false (postfork)) 2388 if (expect_false (postfork))
1987 loop_fork (EV_A); 2389 loop_fork (EV_A);
… …
1992 /* calculate blocking time */ 2394 /* calculate blocking time */
1993 { 2395 {
1994 ev_tstamp waittime = 0.; 2396 ev_tstamp waittime = 0.;
1995 ev_tstamp sleeptime = 0.; 2397 ev_tstamp sleeptime = 0.;
1996 2398
2399 /* remember old timestamp for io_blocktime calculation */
2400 ev_tstamp prev_mn_now = mn_now;
2401
2402 /* update time to cancel out callback processing overhead */
2403 time_update (EV_A_ 1e100);
2404
1997 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2405 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1998 { 2406 {
1999 /* update time to cancel out callback processing overhead */
2000 time_update (EV_A_ 1e100);
2001
2002 waittime = MAX_BLOCKTIME; 2407 waittime = MAX_BLOCKTIME;
2003 2408
2004 if (timercnt) 2409 if (timercnt)
2005 { 2410 {
2006 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2411 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2013 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2418 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2014 if (waittime > to) waittime = to; 2419 if (waittime > to) waittime = to;
2015 } 2420 }
2016#endif 2421#endif
2017 2422
2423 /* don't let timeouts decrease the waittime below timeout_blocktime */
2018 if (expect_false (waittime < timeout_blocktime)) 2424 if (expect_false (waittime < timeout_blocktime))
2019 waittime = timeout_blocktime; 2425 waittime = timeout_blocktime;
2020 2426
2021 sleeptime = waittime - backend_fudge; 2427 /* extra check because io_blocktime is commonly 0 */
2022
2023 if (expect_true (sleeptime > io_blocktime)) 2428 if (expect_false (io_blocktime))
2024 sleeptime = io_blocktime;
2025
2026 if (sleeptime)
2027 { 2429 {
2430 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2431
2432 if (sleeptime > waittime - backend_fudge)
2433 sleeptime = waittime - backend_fudge;
2434
2435 if (expect_true (sleeptime > 0.))
2436 {
2028 ev_sleep (sleeptime); 2437 ev_sleep (sleeptime);
2029 waittime -= sleeptime; 2438 waittime -= sleeptime;
2439 }
2030 } 2440 }
2031 } 2441 }
2032 2442
2443#if EV_FEATURE_API
2033 ++loop_count; 2444 ++loop_count;
2445#endif
2446 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2034 backend_poll (EV_A_ waittime); 2447 backend_poll (EV_A_ waittime);
2448 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2035 2449
2036 /* update ev_rt_now, do magic */ 2450 /* update ev_rt_now, do magic */
2037 time_update (EV_A_ waittime + sleeptime); 2451 time_update (EV_A_ waittime + sleeptime);
2038 } 2452 }
2039 2453
… …
2046#if EV_IDLE_ENABLE 2460#if EV_IDLE_ENABLE
2047 /* queue idle watchers unless other events are pending */ 2461 /* queue idle watchers unless other events are pending */
2048 idle_reify (EV_A); 2462 idle_reify (EV_A);
2049#endif 2463#endif
2050 2464
2465#if EV_CHECK_ENABLE
2051 /* queue check watchers, to be executed first */ 2466 /* queue check watchers, to be executed first */
2052 if (expect_false (checkcnt)) 2467 if (expect_false (checkcnt))
2053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2468 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2469#endif
2054 2470
2055 call_pending (EV_A); 2471 EV_INVOKE_PENDING;
2056 } 2472 }
2057 while (expect_true ( 2473 while (expect_true (
2058 activecnt 2474 activecnt
2059 && !loop_done 2475 && !loop_done
2060 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2476 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2061 )); 2477 ));
2062 2478
2063 if (loop_done == EVUNLOOP_ONE) 2479 if (loop_done == EVBREAK_ONE)
2064 loop_done = EVUNLOOP_CANCEL; 2480 loop_done = EVBREAK_CANCEL;
2065}
2066 2481
2482#if EV_FEATURE_API
2483 --loop_depth;
2484#endif
2485}
2486
2067void 2487void
2068ev_unloop (EV_P_ int how) 2488ev_break (EV_P_ int how)
2069{ 2489{
2070 loop_done = how; 2490 loop_done = how;
2071} 2491}
2072 2492
2493void
2494ev_ref (EV_P)
2495{
2496 ++activecnt;
2497}
2498
2499void
2500ev_unref (EV_P)
2501{
2502 --activecnt;
2503}
2504
2505void
2506ev_now_update (EV_P)
2507{
2508 time_update (EV_A_ 1e100);
2509}
2510
2511void
2512ev_suspend (EV_P)
2513{
2514 ev_now_update (EV_A);
2515}
2516
2517void
2518ev_resume (EV_P)
2519{
2520 ev_tstamp mn_prev = mn_now;
2521
2522 ev_now_update (EV_A);
2523 timers_reschedule (EV_A_ mn_now - mn_prev);
2524#if EV_PERIODIC_ENABLE
2525 /* TODO: really do this? */
2526 periodics_reschedule (EV_A);
2527#endif
2528}
2529
2073/*****************************************************************************/ 2530/*****************************************************************************/
2531/* singly-linked list management, used when the expected list length is short */
2074 2532
2075void inline_size 2533inline_size void
2076wlist_add (WL *head, WL elem) 2534wlist_add (WL *head, WL elem)
2077{ 2535{
2078 elem->next = *head; 2536 elem->next = *head;
2079 *head = elem; 2537 *head = elem;
2080} 2538}
2081 2539
2082void inline_size 2540inline_size void
2083wlist_del (WL *head, WL elem) 2541wlist_del (WL *head, WL elem)
2084{ 2542{
2085 while (*head) 2543 while (*head)
2086 { 2544 {
2087 if (*head == elem) 2545 if (expect_true (*head == elem))
2088 { 2546 {
2089 *head = elem->next; 2547 *head = elem->next;
2090 return; 2548 break;
2091 } 2549 }
2092 2550
2093 head = &(*head)->next; 2551 head = &(*head)->next;
2094 } 2552 }
2095} 2553}
2096 2554
2097void inline_speed 2555/* internal, faster, version of ev_clear_pending */
2556inline_speed void
2098clear_pending (EV_P_ W w) 2557clear_pending (EV_P_ W w)
2099{ 2558{
2100 if (w->pending) 2559 if (w->pending)
2101 { 2560 {
2102 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2561 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103 w->pending = 0; 2562 w->pending = 0;
2104 } 2563 }
2105} 2564}
2106 2565
2107int 2566int
… …
2111 int pending = w_->pending; 2570 int pending = w_->pending;
2112 2571
2113 if (expect_true (pending)) 2572 if (expect_true (pending))
2114 { 2573 {
2115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2574 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2575 p->w = (W)&pending_w;
2116 w_->pending = 0; 2576 w_->pending = 0;
2117 p->w = 0;
2118 return p->events; 2577 return p->events;
2119 } 2578 }
2120 else 2579 else
2121 return 0; 2580 return 0;
2122} 2581}
2123 2582
2124void inline_size 2583inline_size void
2125pri_adjust (EV_P_ W w) 2584pri_adjust (EV_P_ W w)
2126{ 2585{
2127 int pri = w->priority; 2586 int pri = ev_priority (w);
2128 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2587 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2588 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130 w->priority = pri; 2589 ev_set_priority (w, pri);
2131} 2590}
2132 2591
2133void inline_speed 2592inline_speed void
2134ev_start (EV_P_ W w, int active) 2593ev_start (EV_P_ W w, int active)
2135{ 2594{
2136 pri_adjust (EV_A_ w); 2595 pri_adjust (EV_A_ w);
2137 w->active = active; 2596 w->active = active;
2138 ev_ref (EV_A); 2597 ev_ref (EV_A);
2139} 2598}
2140 2599
2141void inline_size 2600inline_size void
2142ev_stop (EV_P_ W w) 2601ev_stop (EV_P_ W w)
2143{ 2602{
2144 ev_unref (EV_A); 2603 ev_unref (EV_A);
2145 w->active = 0; 2604 w->active = 0;
2146} 2605}
… …
2153 int fd = w->fd; 2612 int fd = w->fd;
2154 2613
2155 if (expect_false (ev_is_active (w))) 2614 if (expect_false (ev_is_active (w)))
2156 return; 2615 return;
2157 2616
2158 assert (("ev_io_start called with negative fd", fd >= 0)); 2617 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2159 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2618 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160 2619
2161 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2162 2621
2163 ev_start (EV_A_ (W)w, 1); 2622 ev_start (EV_A_ (W)w, 1);
2164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2623 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165 wlist_add (&anfds[fd].head, (WL)w); 2624 wlist_add (&anfds[fd].head, (WL)w);
2166 2625
2167 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2626 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2168 w->events &= ~EV_IOFDSET; 2627 w->events &= ~EV__IOFDSET;
2169 2628
2170 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2171} 2630}
2172 2631
2173void noinline 2632void noinline
… …
2175{ 2634{
2176 clear_pending (EV_A_ (W)w); 2635 clear_pending (EV_A_ (W)w);
2177 if (expect_false (!ev_is_active (w))) 2636 if (expect_false (!ev_is_active (w)))
2178 return; 2637 return;
2179 2638
2180 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2639 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2181 2640
2182 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2183 2642
2184 wlist_del (&anfds[w->fd].head, (WL)w); 2643 wlist_del (&anfds[w->fd].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
2186 2645
2187 fd_change (EV_A_ w->fd, 1); 2646 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2188 2647
2189 EV_FREQUENT_CHECK; 2648 EV_FREQUENT_CHECK;
2190} 2649}
2191 2650
2192void noinline 2651void noinline
… …
2195 if (expect_false (ev_is_active (w))) 2654 if (expect_false (ev_is_active (w)))
2196 return; 2655 return;
2197 2656
2198 ev_at (w) += mn_now; 2657 ev_at (w) += mn_now;
2199 2658
2200 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2659 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2201 2660
2202 EV_FREQUENT_CHECK; 2661 EV_FREQUENT_CHECK;
2203 2662
2204 ++timercnt; 2663 ++timercnt;
2205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2664 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2208 ANHE_at_cache (timers [ev_active (w)]); 2667 ANHE_at_cache (timers [ev_active (w)]);
2209 upheap (timers, ev_active (w)); 2668 upheap (timers, ev_active (w));
2210 2669
2211 EV_FREQUENT_CHECK; 2670 EV_FREQUENT_CHECK;
2212 2671
2213 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2672 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214} 2673}
2215 2674
2216void noinline 2675void noinline
2217ev_timer_stop (EV_P_ ev_timer *w) 2676ev_timer_stop (EV_P_ ev_timer *w)
2218{ 2677{
… …
2223 EV_FREQUENT_CHECK; 2682 EV_FREQUENT_CHECK;
2224 2683
2225 { 2684 {
2226 int active = ev_active (w); 2685 int active = ev_active (w);
2227 2686
2228 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2687 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229 2688
2230 --timercnt; 2689 --timercnt;
2231 2690
2232 if (expect_true (active < timercnt + HEAP0)) 2691 if (expect_true (active < timercnt + HEAP0))
2233 { 2692 {
2234 timers [active] = timers [timercnt + HEAP0]; 2693 timers [active] = timers [timercnt + HEAP0];
2235 adjustheap (timers, timercnt, active); 2694 adjustheap (timers, timercnt, active);
2236 } 2695 }
2237 } 2696 }
2238 2697
2239 EV_FREQUENT_CHECK;
2240
2241 ev_at (w) -= mn_now; 2698 ev_at (w) -= mn_now;
2242 2699
2243 ev_stop (EV_A_ (W)w); 2700 ev_stop (EV_A_ (W)w);
2701
2702 EV_FREQUENT_CHECK;
2244} 2703}
2245 2704
2246void noinline 2705void noinline
2247ev_timer_again (EV_P_ ev_timer *w) 2706ev_timer_again (EV_P_ ev_timer *w)
2248{ 2707{
… …
2266 } 2725 }
2267 2726
2268 EV_FREQUENT_CHECK; 2727 EV_FREQUENT_CHECK;
2269} 2728}
2270 2729
2730ev_tstamp
2731ev_timer_remaining (EV_P_ ev_timer *w)
2732{
2733 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2734}
2735
2271#if EV_PERIODIC_ENABLE 2736#if EV_PERIODIC_ENABLE
2272void noinline 2737void noinline
2273ev_periodic_start (EV_P_ ev_periodic *w) 2738ev_periodic_start (EV_P_ ev_periodic *w)
2274{ 2739{
2275 if (expect_false (ev_is_active (w))) 2740 if (expect_false (ev_is_active (w)))
… …
2277 2742
2278 if (w->reschedule_cb) 2743 if (w->reschedule_cb)
2279 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2744 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280 else if (w->interval) 2745 else if (w->interval)
2281 { 2746 {
2282 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2747 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2283 /* this formula differs from the one in periodic_reify because we do not always round up */ 2748 /* this formula differs from the one in periodic_reify because we do not always round up */
2284 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2749 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2285 } 2750 }
2286 else 2751 else
2287 ev_at (w) = w->offset; 2752 ev_at (w) = w->offset;
… …
2295 ANHE_at_cache (periodics [ev_active (w)]); 2760 ANHE_at_cache (periodics [ev_active (w)]);
2296 upheap (periodics, ev_active (w)); 2761 upheap (periodics, ev_active (w));
2297 2762
2298 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
2299 2764
2300 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2765 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2301} 2766}
2302 2767
2303void noinline 2768void noinline
2304ev_periodic_stop (EV_P_ ev_periodic *w) 2769ev_periodic_stop (EV_P_ ev_periodic *w)
2305{ 2770{
… …
2310 EV_FREQUENT_CHECK; 2775 EV_FREQUENT_CHECK;
2311 2776
2312 { 2777 {
2313 int active = ev_active (w); 2778 int active = ev_active (w);
2314 2779
2315 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2780 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316 2781
2317 --periodiccnt; 2782 --periodiccnt;
2318 2783
2319 if (expect_true (active < periodiccnt + HEAP0)) 2784 if (expect_true (active < periodiccnt + HEAP0))
2320 { 2785 {
2321 periodics [active] = periodics [periodiccnt + HEAP0]; 2786 periodics [active] = periodics [periodiccnt + HEAP0];
2322 adjustheap (periodics, periodiccnt, active); 2787 adjustheap (periodics, periodiccnt, active);
2323 } 2788 }
2324 } 2789 }
2325 2790
2326 EV_FREQUENT_CHECK;
2327
2328 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2792
2793 EV_FREQUENT_CHECK;
2329} 2794}
2330 2795
2331void noinline 2796void noinline
2332ev_periodic_again (EV_P_ ev_periodic *w) 2797ev_periodic_again (EV_P_ ev_periodic *w)
2333{ 2798{
… …
2339 2804
2340#ifndef SA_RESTART 2805#ifndef SA_RESTART
2341# define SA_RESTART 0 2806# define SA_RESTART 0
2342#endif 2807#endif
2343 2808
2809#if EV_SIGNAL_ENABLE
2810
2344void noinline 2811void noinline
2345ev_signal_start (EV_P_ ev_signal *w) 2812ev_signal_start (EV_P_ ev_signal *w)
2346{ 2813{
2347#if EV_MULTIPLICITY
2348 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349#endif
2350 if (expect_false (ev_is_active (w))) 2814 if (expect_false (ev_is_active (w)))
2351 return; 2815 return;
2352 2816
2353 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2817 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2354 2818
2355 evpipe_init (EV_A); 2819#if EV_MULTIPLICITY
2820 assert (("libev: a signal must not be attached to two different loops",
2821 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2356 2822
2357 EV_FREQUENT_CHECK; 2823 signals [w->signum - 1].loop = EV_A;
2824#endif
2358 2825
2826 EV_FREQUENT_CHECK;
2827
2828#if EV_USE_SIGNALFD
2829 if (sigfd == -2)
2359 { 2830 {
2360#ifndef _WIN32 2831 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2361 sigset_t full, prev; 2832 if (sigfd < 0 && errno == EINVAL)
2362 sigfillset (&full); 2833 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2363 sigprocmask (SIG_SETMASK, &full, &prev);
2364#endif
2365 2834
2366 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2835 if (sigfd >= 0)
2836 {
2837 fd_intern (sigfd); /* doing it twice will not hurt */
2367 2838
2368#ifndef _WIN32 2839 sigemptyset (&sigfd_set);
2369 sigprocmask (SIG_SETMASK, &prev, 0); 2840
2370#endif 2841 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2842 ev_set_priority (&sigfd_w, EV_MAXPRI);
2843 ev_io_start (EV_A_ &sigfd_w);
2844 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2845 }
2371 } 2846 }
2847
2848 if (sigfd >= 0)
2849 {
2850 /* TODO: check .head */
2851 sigaddset (&sigfd_set, w->signum);
2852 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2853
2854 signalfd (sigfd, &sigfd_set, 0);
2855 }
2856#endif
2372 2857
2373 ev_start (EV_A_ (W)w, 1); 2858 ev_start (EV_A_ (W)w, 1);
2374 wlist_add (&signals [w->signum - 1].head, (WL)w); 2859 wlist_add (&signals [w->signum - 1].head, (WL)w);
2375 2860
2376 if (!((WL)w)->next) 2861 if (!((WL)w)->next)
2862# if EV_USE_SIGNALFD
2863 if (sigfd < 0) /*TODO*/
2864# endif
2377 { 2865 {
2378#if _WIN32 2866# ifdef _WIN32
2867 evpipe_init (EV_A);
2868
2379 signal (w->signum, ev_sighandler); 2869 signal (w->signum, ev_sighandler);
2380#else 2870# else
2381 struct sigaction sa; 2871 struct sigaction sa;
2872
2873 evpipe_init (EV_A);
2874
2382 sa.sa_handler = ev_sighandler; 2875 sa.sa_handler = ev_sighandler;
2383 sigfillset (&sa.sa_mask); 2876 sigfillset (&sa.sa_mask);
2384 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2877 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2385 sigaction (w->signum, &sa, 0); 2878 sigaction (w->signum, &sa, 0);
2879
2880 sigemptyset (&sa.sa_mask);
2881 sigaddset (&sa.sa_mask, w->signum);
2882 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2386#endif 2883#endif
2387 } 2884 }
2388 2885
2389 EV_FREQUENT_CHECK; 2886 EV_FREQUENT_CHECK;
2390} 2887}
2391 2888
2392void noinline 2889void noinline
… …
2400 2897
2401 wlist_del (&signals [w->signum - 1].head, (WL)w); 2898 wlist_del (&signals [w->signum - 1].head, (WL)w);
2402 ev_stop (EV_A_ (W)w); 2899 ev_stop (EV_A_ (W)w);
2403 2900
2404 if (!signals [w->signum - 1].head) 2901 if (!signals [w->signum - 1].head)
2902 {
2903#if EV_MULTIPLICITY
2904 signals [w->signum - 1].loop = 0; /* unattach from signal */
2905#endif
2906#if EV_USE_SIGNALFD
2907 if (sigfd >= 0)
2908 {
2909 sigset_t ss;
2910
2911 sigemptyset (&ss);
2912 sigaddset (&ss, w->signum);
2913 sigdelset (&sigfd_set, w->signum);
2914
2915 signalfd (sigfd, &sigfd_set, 0);
2916 sigprocmask (SIG_UNBLOCK, &ss, 0);
2917 }
2918 else
2919#endif
2405 signal (w->signum, SIG_DFL); 2920 signal (w->signum, SIG_DFL);
2921 }
2406 2922
2407 EV_FREQUENT_CHECK; 2923 EV_FREQUENT_CHECK;
2408} 2924}
2925
2926#endif
2927
2928#if EV_CHILD_ENABLE
2409 2929
2410void 2930void
2411ev_child_start (EV_P_ ev_child *w) 2931ev_child_start (EV_P_ ev_child *w)
2412{ 2932{
2413#if EV_MULTIPLICITY 2933#if EV_MULTIPLICITY
2414 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2415#endif 2935#endif
2416 if (expect_false (ev_is_active (w))) 2936 if (expect_false (ev_is_active (w)))
2417 return; 2937 return;
2418 2938
2419 EV_FREQUENT_CHECK; 2939 EV_FREQUENT_CHECK;
2420 2940
2421 ev_start (EV_A_ (W)w, 1); 2941 ev_start (EV_A_ (W)w, 1);
2422 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2942 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2423 2943
2424 EV_FREQUENT_CHECK; 2944 EV_FREQUENT_CHECK;
2425} 2945}
2426 2946
2427void 2947void
… …
2431 if (expect_false (!ev_is_active (w))) 2951 if (expect_false (!ev_is_active (w)))
2432 return; 2952 return;
2433 2953
2434 EV_FREQUENT_CHECK; 2954 EV_FREQUENT_CHECK;
2435 2955
2436 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2437 ev_stop (EV_A_ (W)w); 2957 ev_stop (EV_A_ (W)w);
2438 2958
2439 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2440} 2960}
2961
2962#endif
2441 2963
2442#if EV_STAT_ENABLE 2964#if EV_STAT_ENABLE
2443 2965
2444# ifdef _WIN32 2966# ifdef _WIN32
2445# undef lstat 2967# undef lstat
… …
2451#define MIN_STAT_INTERVAL 0.1074891 2973#define MIN_STAT_INTERVAL 0.1074891
2452 2974
2453static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2454 2976
2455#if EV_USE_INOTIFY 2977#if EV_USE_INOTIFY
2456# define EV_INOTIFY_BUFSIZE 8192 2978
2979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2457 2981
2458static void noinline 2982static void noinline
2459infy_add (EV_P_ ev_stat *w) 2983infy_add (EV_P_ ev_stat *w)
2460{ 2984{
2461 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); 2985 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);
2462 2986
2463 if (w->wd < 0) 2987 if (w->wd >= 0)
2988 {
2989 struct statfs sfs;
2990
2991 /* now local changes will be tracked by inotify, but remote changes won't */
2992 /* unless the filesystem is known to be local, we therefore still poll */
2993 /* also do poll on <2.6.25, but with normal frequency */
2994
2995 if (!fs_2625)
2996 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2997 else if (!statfs (w->path, &sfs)
2998 && (sfs.f_type == 0x1373 /* devfs */
2999 || sfs.f_type == 0xEF53 /* ext2/3 */
3000 || sfs.f_type == 0x3153464a /* jfs */
3001 || sfs.f_type == 0x52654973 /* reiser3 */
3002 || sfs.f_type == 0x01021994 /* tempfs */
3003 || sfs.f_type == 0x58465342 /* xfs */))
3004 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3005 else
3006 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2464 { 3007 }
3008 else
3009 {
3010 /* can't use inotify, continue to stat */
2465 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3011 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2466 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2467 3012
2468 /* monitor some parent directory for speedup hints */ 3013 /* if path is not there, monitor some parent directory for speedup hints */
2469 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3014 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2470 /* but an efficiency issue only */ 3015 /* but an efficiency issue only */
2471 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3016 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2472 { 3017 {
2473 char path [4096]; 3018 char path [4096];
… …
2478 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3023 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2479 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3024 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2480 3025
2481 char *pend = strrchr (path, '/'); 3026 char *pend = strrchr (path, '/');
2482 3027
2483 if (!pend) 3028 if (!pend || pend == path)
2484 break; /* whoops, no '/', complain to your admin */ 3029 break;
2485 3030
2486 *pend = 0; 3031 *pend = 0;
2487 w->wd = inotify_add_watch (fs_fd, path, mask); 3032 w->wd = inotify_add_watch (fs_fd, path, mask);
2488 } 3033 }
2489 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3034 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2490 } 3035 }
2491 } 3036 }
2492 else 3037
2493 { 3038 if (w->wd >= 0)
2494 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3039 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2495 3040
2496 /* now local changes will be tracked by inotify, but remote changes won't */ 3041 /* now re-arm timer, if required */
2497 /* unless the filesystem it known to be local, we therefore still poll */ 3042 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2498 /* also do poll on <2.6.25, but with normal frequency */
2499 struct statfs sfs;
2500
2501 if (fs_2625 && !statfs (w->path, &sfs))
2502 if (sfs.f_type == 0x1373 /* devfs */
2503 || sfs.f_type == 0xEF53 /* ext2/3 */
2504 || sfs.f_type == 0x3153464a /* jfs */
2505 || sfs.f_type == 0x52654973 /* reiser3 */
2506 || sfs.f_type == 0x01021994 /* tempfs */
2507 || sfs.f_type == 0x58465342 /* xfs */)
2508 return;
2509
2510 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2511 ev_timer_again (EV_A_ &w->timer); 3043 ev_timer_again (EV_A_ &w->timer);
2512 } 3044 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2513} 3045}
2514 3046
2515static void noinline 3047static void noinline
2516infy_del (EV_P_ ev_stat *w) 3048infy_del (EV_P_ ev_stat *w)
2517{ 3049{
… …
2520 3052
2521 if (wd < 0) 3053 if (wd < 0)
2522 return; 3054 return;
2523 3055
2524 w->wd = -2; 3056 w->wd = -2;
2525 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3057 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2526 wlist_del (&fs_hash [slot].head, (WL)w); 3058 wlist_del (&fs_hash [slot].head, (WL)w);
2527 3059
2528 /* remove this watcher, if others are watching it, they will rearm */ 3060 /* remove this watcher, if others are watching it, they will rearm */
2529 inotify_rm_watch (fs_fd, wd); 3061 inotify_rm_watch (fs_fd, wd);
2530} 3062}
… …
2532static void noinline 3064static void noinline
2533infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3065infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2534{ 3066{
2535 if (slot < 0) 3067 if (slot < 0)
2536 /* overflow, need to check for all hash slots */ 3068 /* overflow, need to check for all hash slots */
2537 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3069 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2538 infy_wd (EV_A_ slot, wd, ev); 3070 infy_wd (EV_A_ slot, wd, ev);
2539 else 3071 else
2540 { 3072 {
2541 WL w_; 3073 WL w_;
2542 3074
2543 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3075 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2544 { 3076 {
2545 ev_stat *w = (ev_stat *)w_; 3077 ev_stat *w = (ev_stat *)w_;
2546 w_ = w_->next; /* lets us remove this watcher and all before it */ 3078 w_ = w_->next; /* lets us remove this watcher and all before it */
2547 3079
2548 if (w->wd == wd || wd == -1) 3080 if (w->wd == wd || wd == -1)
2549 { 3081 {
2550 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3082 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2551 { 3083 {
3084 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2552 w->wd = -1; 3085 w->wd = -1;
2553 infy_add (EV_A_ w); /* re-add, no matter what */ 3086 infy_add (EV_A_ w); /* re-add, no matter what */
2554 } 3087 }
2555 3088
2556 stat_timer_cb (EV_A_ &w->timer, 0); 3089 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2561 3094
2562static void 3095static void
2563infy_cb (EV_P_ ev_io *w, int revents) 3096infy_cb (EV_P_ ev_io *w, int revents)
2564{ 3097{
2565 char buf [EV_INOTIFY_BUFSIZE]; 3098 char buf [EV_INOTIFY_BUFSIZE];
2566 struct inotify_event *ev = (struct inotify_event *)buf;
2567 int ofs; 3099 int ofs;
2568 int len = read (fs_fd, buf, sizeof (buf)); 3100 int len = read (fs_fd, buf, sizeof (buf));
2569 3101
2570 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3102 for (ofs = 0; ofs < len; )
3103 {
3104 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2571 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3105 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3106 ofs += sizeof (struct inotify_event) + ev->len;
3107 }
2572} 3108}
2573 3109
2574void inline_size 3110inline_size void
2575check_2625 (EV_P) 3111ev_check_2625 (EV_P)
2576{ 3112{
2577 /* kernels < 2.6.25 are borked 3113 /* kernels < 2.6.25 are borked
2578 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3114 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2579 */ 3115 */
2580 struct utsname buf; 3116 if (ev_linux_version () < 0x020619)
2581 int major, minor, micro;
2582
2583 if (uname (&buf))
2584 return; 3117 return;
2585 3118
2586 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2587 return;
2588
2589 if (major < 2
2590 || (major == 2 && minor < 6)
2591 || (major == 2 && minor == 6 && micro < 25))
2592 return;
2593
2594 fs_2625 = 1; 3119 fs_2625 = 1;
2595} 3120}
2596 3121
2597void inline_size 3122inline_size int
3123infy_newfd (void)
3124{
3125#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3126 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3127 if (fd >= 0)
3128 return fd;
3129#endif
3130 return inotify_init ();
3131}
3132
3133inline_size void
2598infy_init (EV_P) 3134infy_init (EV_P)
2599{ 3135{
2600 if (fs_fd != -2) 3136 if (fs_fd != -2)
2601 return; 3137 return;
2602 3138
2603 fs_fd = -1; 3139 fs_fd = -1;
2604 3140
2605 check_2625 (EV_A); 3141 ev_check_2625 (EV_A);
2606 3142
2607 fs_fd = inotify_init (); 3143 fs_fd = infy_newfd ();
2608 3144
2609 if (fs_fd >= 0) 3145 if (fs_fd >= 0)
2610 { 3146 {
3147 fd_intern (fs_fd);
2611 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3148 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2612 ev_set_priority (&fs_w, EV_MAXPRI); 3149 ev_set_priority (&fs_w, EV_MAXPRI);
2613 ev_io_start (EV_A_ &fs_w); 3150 ev_io_start (EV_A_ &fs_w);
3151 ev_unref (EV_A);
2614 } 3152 }
2615} 3153}
2616 3154
2617void inline_size 3155inline_size void
2618infy_fork (EV_P) 3156infy_fork (EV_P)
2619{ 3157{
2620 int slot; 3158 int slot;
2621 3159
2622 if (fs_fd < 0) 3160 if (fs_fd < 0)
2623 return; 3161 return;
2624 3162
3163 ev_ref (EV_A);
3164 ev_io_stop (EV_A_ &fs_w);
2625 close (fs_fd); 3165 close (fs_fd);
2626 fs_fd = inotify_init (); 3166 fs_fd = infy_newfd ();
2627 3167
3168 if (fs_fd >= 0)
3169 {
3170 fd_intern (fs_fd);
3171 ev_io_set (&fs_w, fs_fd, EV_READ);
3172 ev_io_start (EV_A_ &fs_w);
3173 ev_unref (EV_A);
3174 }
3175
2628 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3176 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2629 { 3177 {
2630 WL w_ = fs_hash [slot].head; 3178 WL w_ = fs_hash [slot].head;
2631 fs_hash [slot].head = 0; 3179 fs_hash [slot].head = 0;
2632 3180
2633 while (w_) 3181 while (w_)
… …
2638 w->wd = -1; 3186 w->wd = -1;
2639 3187
2640 if (fs_fd >= 0) 3188 if (fs_fd >= 0)
2641 infy_add (EV_A_ w); /* re-add, no matter what */ 3189 infy_add (EV_A_ w); /* re-add, no matter what */
2642 else 3190 else
3191 {
3192 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3193 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2643 ev_timer_again (EV_A_ &w->timer); 3194 ev_timer_again (EV_A_ &w->timer);
3195 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3196 }
2644 } 3197 }
2645 } 3198 }
2646} 3199}
2647 3200
2648#endif 3201#endif
… …
2665static void noinline 3218static void noinline
2666stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3219stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2667{ 3220{
2668 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3221 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2669 3222
2670 /* we copy this here each the time so that */ 3223 ev_statdata prev = w->attr;
2671 /* prev has the old value when the callback gets invoked */
2672 w->prev = w->attr;
2673 ev_stat_stat (EV_A_ w); 3224 ev_stat_stat (EV_A_ w);
2674 3225
2675 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3226 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2676 if ( 3227 if (
2677 w->prev.st_dev != w->attr.st_dev 3228 prev.st_dev != w->attr.st_dev
2678 || w->prev.st_ino != w->attr.st_ino 3229 || prev.st_ino != w->attr.st_ino
2679 || w->prev.st_mode != w->attr.st_mode 3230 || prev.st_mode != w->attr.st_mode
2680 || w->prev.st_nlink != w->attr.st_nlink 3231 || prev.st_nlink != w->attr.st_nlink
2681 || w->prev.st_uid != w->attr.st_uid 3232 || prev.st_uid != w->attr.st_uid
2682 || w->prev.st_gid != w->attr.st_gid 3233 || prev.st_gid != w->attr.st_gid
2683 || w->prev.st_rdev != w->attr.st_rdev 3234 || prev.st_rdev != w->attr.st_rdev
2684 || w->prev.st_size != w->attr.st_size 3235 || prev.st_size != w->attr.st_size
2685 || w->prev.st_atime != w->attr.st_atime 3236 || prev.st_atime != w->attr.st_atime
2686 || w->prev.st_mtime != w->attr.st_mtime 3237 || prev.st_mtime != w->attr.st_mtime
2687 || w->prev.st_ctime != w->attr.st_ctime 3238 || prev.st_ctime != w->attr.st_ctime
2688 ) { 3239 ) {
3240 /* we only update w->prev on actual differences */
3241 /* in case we test more often than invoke the callback, */
3242 /* to ensure that prev is always different to attr */
3243 w->prev = prev;
3244
2689 #if EV_USE_INOTIFY 3245 #if EV_USE_INOTIFY
2690 if (fs_fd >= 0) 3246 if (fs_fd >= 0)
2691 { 3247 {
2692 infy_del (EV_A_ w); 3248 infy_del (EV_A_ w);
2693 infy_add (EV_A_ w); 3249 infy_add (EV_A_ w);
… …
2718 3274
2719 if (fs_fd >= 0) 3275 if (fs_fd >= 0)
2720 infy_add (EV_A_ w); 3276 infy_add (EV_A_ w);
2721 else 3277 else
2722#endif 3278#endif
3279 {
2723 ev_timer_again (EV_A_ &w->timer); 3280 ev_timer_again (EV_A_ &w->timer);
3281 ev_unref (EV_A);
3282 }
2724 3283
2725 ev_start (EV_A_ (W)w, 1); 3284 ev_start (EV_A_ (W)w, 1);
2726 3285
2727 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2728} 3287}
… …
2737 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2738 3297
2739#if EV_USE_INOTIFY 3298#if EV_USE_INOTIFY
2740 infy_del (EV_A_ w); 3299 infy_del (EV_A_ w);
2741#endif 3300#endif
3301
3302 if (ev_is_active (&w->timer))
3303 {
3304 ev_ref (EV_A);
2742 ev_timer_stop (EV_A_ &w->timer); 3305 ev_timer_stop (EV_A_ &w->timer);
3306 }
2743 3307
2744 ev_stop (EV_A_ (W)w); 3308 ev_stop (EV_A_ (W)w);
2745 3309
2746 EV_FREQUENT_CHECK; 3310 EV_FREQUENT_CHECK;
2747} 3311}
… …
2792 3356
2793 EV_FREQUENT_CHECK; 3357 EV_FREQUENT_CHECK;
2794} 3358}
2795#endif 3359#endif
2796 3360
3361#if EV_PREPARE_ENABLE
2797void 3362void
2798ev_prepare_start (EV_P_ ev_prepare *w) 3363ev_prepare_start (EV_P_ ev_prepare *w)
2799{ 3364{
2800 if (expect_false (ev_is_active (w))) 3365 if (expect_false (ev_is_active (w)))
2801 return; 3366 return;
… …
2827 3392
2828 ev_stop (EV_A_ (W)w); 3393 ev_stop (EV_A_ (W)w);
2829 3394
2830 EV_FREQUENT_CHECK; 3395 EV_FREQUENT_CHECK;
2831} 3396}
3397#endif
2832 3398
3399#if EV_CHECK_ENABLE
2833void 3400void
2834ev_check_start (EV_P_ ev_check *w) 3401ev_check_start (EV_P_ ev_check *w)
2835{ 3402{
2836 if (expect_false (ev_is_active (w))) 3403 if (expect_false (ev_is_active (w)))
2837 return; 3404 return;
… …
2863 3430
2864 ev_stop (EV_A_ (W)w); 3431 ev_stop (EV_A_ (W)w);
2865 3432
2866 EV_FREQUENT_CHECK; 3433 EV_FREQUENT_CHECK;
2867} 3434}
3435#endif
2868 3436
2869#if EV_EMBED_ENABLE 3437#if EV_EMBED_ENABLE
2870void noinline 3438void noinline
2871ev_embed_sweep (EV_P_ ev_embed *w) 3439ev_embed_sweep (EV_P_ ev_embed *w)
2872{ 3440{
2873 ev_loop (w->other, EVLOOP_NONBLOCK); 3441 ev_run (w->other, EVRUN_NOWAIT);
2874} 3442}
2875 3443
2876static void 3444static void
2877embed_io_cb (EV_P_ ev_io *io, int revents) 3445embed_io_cb (EV_P_ ev_io *io, int revents)
2878{ 3446{
2879 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3447 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2880 3448
2881 if (ev_cb (w)) 3449 if (ev_cb (w))
2882 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3450 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2883 else 3451 else
2884 ev_loop (w->other, EVLOOP_NONBLOCK); 3452 ev_run (w->other, EVRUN_NOWAIT);
2885} 3453}
2886 3454
2887static void 3455static void
2888embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3456embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2889{ 3457{
2890 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3458 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2891 3459
2892 { 3460 {
2893 struct ev_loop *loop = w->other; 3461 EV_P = w->other;
2894 3462
2895 while (fdchangecnt) 3463 while (fdchangecnt)
2896 { 3464 {
2897 fd_reify (EV_A); 3465 fd_reify (EV_A);
2898 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3466 ev_run (EV_A_ EVRUN_NOWAIT);
2899 } 3467 }
2900 } 3468 }
2901} 3469}
2902 3470
2903static void 3471static void
2904embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3472embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2905{ 3473{
2906 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3474 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2907 3475
3476 ev_embed_stop (EV_A_ w);
3477
2908 { 3478 {
2909 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2910 3480
2911 ev_loop_fork (EV_A); 3481 ev_loop_fork (EV_A);
3482 ev_run (EV_A_ EVRUN_NOWAIT);
2912 } 3483 }
3484
3485 ev_embed_start (EV_A_ w);
2913} 3486}
2914 3487
2915#if 0 3488#if 0
2916static void 3489static void
2917embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3490embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2925{ 3498{
2926 if (expect_false (ev_is_active (w))) 3499 if (expect_false (ev_is_active (w)))
2927 return; 3500 return;
2928 3501
2929 { 3502 {
2930 struct ev_loop *loop = w->other; 3503 EV_P = w->other;
2931 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3504 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2932 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3505 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2933 } 3506 }
2934 3507
2935 EV_FREQUENT_CHECK; 3508 EV_FREQUENT_CHECK;
2936 3509
… …
2962 3535
2963 ev_io_stop (EV_A_ &w->io); 3536 ev_io_stop (EV_A_ &w->io);
2964 ev_prepare_stop (EV_A_ &w->prepare); 3537 ev_prepare_stop (EV_A_ &w->prepare);
2965 ev_fork_stop (EV_A_ &w->fork); 3538 ev_fork_stop (EV_A_ &w->fork);
2966 3539
3540 ev_stop (EV_A_ (W)w);
3541
2967 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2968} 3543}
2969#endif 3544#endif
2970 3545
2971#if EV_FORK_ENABLE 3546#if EV_FORK_ENABLE
… …
3004 3579
3005 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
3006} 3581}
3007#endif 3582#endif
3008 3583
3009#if EV_ASYNC_ENABLE 3584#if EV_CLEANUP_ENABLE
3010void 3585void
3011ev_async_start (EV_P_ ev_async *w) 3586ev_cleanup_start (EV_P_ ev_cleanup *w)
3012{ 3587{
3013 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
3014 return; 3589 return;
3590
3591 EV_FREQUENT_CHECK;
3592
3593 ev_start (EV_A_ (W)w, ++cleanupcnt);
3594 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3595 cleanups [cleanupcnt - 1] = w;
3596
3597 /* cleanup watchers should never keep a refcount on the loop */
3598 ev_unref (EV_A);
3599 EV_FREQUENT_CHECK;
3600}
3601
3602void
3603ev_cleanup_stop (EV_P_ ev_cleanup *w)
3604{
3605 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w)))
3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610 ev_ref (EV_A);
3611
3612 {
3613 int active = ev_active (w);
3614
3615 cleanups [active - 1] = cleanups [--cleanupcnt];
3616 ev_active (cleanups [active - 1]) = active;
3617 }
3618
3619 ev_stop (EV_A_ (W)w);
3620
3621 EV_FREQUENT_CHECK;
3622}
3623#endif
3624
3625#if EV_ASYNC_ENABLE
3626void
3627ev_async_start (EV_P_ ev_async *w)
3628{
3629 if (expect_false (ev_is_active (w)))
3630 return;
3631
3632 w->sent = 0;
3015 3633
3016 evpipe_init (EV_A); 3634 evpipe_init (EV_A);
3017 3635
3018 EV_FREQUENT_CHECK; 3636 EV_FREQUENT_CHECK;
3019 3637
… …
3047 3665
3048void 3666void
3049ev_async_send (EV_P_ ev_async *w) 3667ev_async_send (EV_P_ ev_async *w)
3050{ 3668{
3051 w->sent = 1; 3669 w->sent = 1;
3052 evpipe_write (EV_A_ &gotasync); 3670 evpipe_write (EV_A_ &async_pending);
3053} 3671}
3054#endif 3672#endif
3055 3673
3056/*****************************************************************************/ 3674/*****************************************************************************/
3057 3675
… …
3097{ 3715{
3098 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3716 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3099 3717
3100 if (expect_false (!once)) 3718 if (expect_false (!once))
3101 { 3719 {
3102 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3720 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3103 return; 3721 return;
3104 } 3722 }
3105 3723
3106 once->cb = cb; 3724 once->cb = cb;
3107 once->arg = arg; 3725 once->arg = arg;
… …
3119 ev_timer_set (&once->to, timeout, 0.); 3737 ev_timer_set (&once->to, timeout, 0.);
3120 ev_timer_start (EV_A_ &once->to); 3738 ev_timer_start (EV_A_ &once->to);
3121 } 3739 }
3122} 3740}
3123 3741
3742/*****************************************************************************/
3743
3744#if EV_WALK_ENABLE
3745void
3746ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3747{
3748 int i, j;
3749 ev_watcher_list *wl, *wn;
3750
3751 if (types & (EV_IO | EV_EMBED))
3752 for (i = 0; i < anfdmax; ++i)
3753 for (wl = anfds [i].head; wl; )
3754 {
3755 wn = wl->next;
3756
3757#if EV_EMBED_ENABLE
3758 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3759 {
3760 if (types & EV_EMBED)
3761 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3762 }
3763 else
3764#endif
3765#if EV_USE_INOTIFY
3766 if (ev_cb ((ev_io *)wl) == infy_cb)
3767 ;
3768 else
3769#endif
3770 if ((ev_io *)wl != &pipe_w)
3771 if (types & EV_IO)
3772 cb (EV_A_ EV_IO, wl);
3773
3774 wl = wn;
3775 }
3776
3777 if (types & (EV_TIMER | EV_STAT))
3778 for (i = timercnt + HEAP0; i-- > HEAP0; )
3779#if EV_STAT_ENABLE
3780 /*TODO: timer is not always active*/
3781 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3782 {
3783 if (types & EV_STAT)
3784 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3785 }
3786 else
3787#endif
3788 if (types & EV_TIMER)
3789 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3790
3791#if EV_PERIODIC_ENABLE
3792 if (types & EV_PERIODIC)
3793 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3794 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3795#endif
3796
3797#if EV_IDLE_ENABLE
3798 if (types & EV_IDLE)
3799 for (j = NUMPRI; i--; )
3800 for (i = idlecnt [j]; i--; )
3801 cb (EV_A_ EV_IDLE, idles [j][i]);
3802#endif
3803
3804#if EV_FORK_ENABLE
3805 if (types & EV_FORK)
3806 for (i = forkcnt; i--; )
3807 if (ev_cb (forks [i]) != embed_fork_cb)
3808 cb (EV_A_ EV_FORK, forks [i]);
3809#endif
3810
3811#if EV_ASYNC_ENABLE
3812 if (types & EV_ASYNC)
3813 for (i = asynccnt; i--; )
3814 cb (EV_A_ EV_ASYNC, asyncs [i]);
3815#endif
3816
3817#if EV_PREPARE_ENABLE
3818 if (types & EV_PREPARE)
3819 for (i = preparecnt; i--; )
3820# if EV_EMBED_ENABLE
3821 if (ev_cb (prepares [i]) != embed_prepare_cb)
3822# endif
3823 cb (EV_A_ EV_PREPARE, prepares [i]);
3824#endif
3825
3826#if EV_CHECK_ENABLE
3827 if (types & EV_CHECK)
3828 for (i = checkcnt; i--; )
3829 cb (EV_A_ EV_CHECK, checks [i]);
3830#endif
3831
3832#if EV_SIGNAL_ENABLE
3833 if (types & EV_SIGNAL)
3834 for (i = 0; i < EV_NSIG - 1; ++i)
3835 for (wl = signals [i].head; wl; )
3836 {
3837 wn = wl->next;
3838 cb (EV_A_ EV_SIGNAL, wl);
3839 wl = wn;
3840 }
3841#endif
3842
3843#if EV_CHILD_ENABLE
3844 if (types & EV_CHILD)
3845 for (i = (EV_PID_HASHSIZE); i--; )
3846 for (wl = childs [i]; wl; )
3847 {
3848 wn = wl->next;
3849 cb (EV_A_ EV_CHILD, wl);
3850 wl = wn;
3851 }
3852#endif
3853/* EV_STAT 0x00001000 /* stat data changed */
3854/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3855}
3856#endif
3857
3124#if EV_MULTIPLICITY 3858#if EV_MULTIPLICITY
3125 #include "ev_wrap.h" 3859 #include "ev_wrap.h"
3126#endif 3860#endif
3127 3861
3128#ifdef __cplusplus 3862EV_CPP(})
3129}
3130#endif
3131 3863

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