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Comparing libev/ev.c (file contents):
Revision 1.254 by root, Wed Jun 4 20:26:55 2008 UTC vs.
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 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 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
74# endif 98# endif
75 99
100# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
89# endif
90# endif 107# endif
91 108
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
95# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
98# endif 116# endif
99 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
106# endif 125# endif
107 126
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
111# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
114# endif 134# endif
115 135
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
122# endif 143# endif
123 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
154#ifndef _WIN32 187#ifndef _WIN32
155# include <sys/time.h> 188# include <sys/time.h>
156# include <sys/wait.h> 189# include <sys/wait.h>
157# include <unistd.h> 190# include <unistd.h>
158#else 191#else
192# include <io.h>
159# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 194# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
163# endif 197# endif
198# undef EV_AVOID_STDIO
164#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
165 208
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
238
239#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else
243# define EV_USE_CLOCK_SYSCALL 0
244# endif
245#endif
167 246
168#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
171# else 250# else
172# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
173# endif 252# endif
174#endif 253#endif
175 254
176#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178#endif 257#endif
179 258
180#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
183# else 262# else
184# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
185# endif 264# endif
186#endif 265#endif
187 266
188#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
189# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
190#endif 269#endif
191 270
192#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
193# ifdef _WIN32 272# ifdef _WIN32
194# define EV_USE_POLL 0 273# define EV_USE_POLL 0
195# else 274# else
196# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
197# endif 276# endif
198#endif 277#endif
199 278
200#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
203# else 282# else
204# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
205# endif 284# endif
206#endif 285#endif
207 286
… …
213# define EV_USE_PORT 0 292# define EV_USE_PORT 0
214#endif 293#endif
215 294
216#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
218# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
219# else 298# else
220# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
221# endif 300# endif
222#endif 301#endif
223 302
224#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
225# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_PID_HASHSIZE 1
227# else
228# define EV_PID_HASHSIZE 16
229# endif
230#endif 305#endif
231 306
232#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
233# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
234# define EV_INOTIFY_HASHSIZE 1
235# else
236# define EV_INOTIFY_HASHSIZE 16
237# endif
238#endif 309#endif
239 310
240#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
243# else 314# else
244# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
316# endif
317#endif
318
319#ifndef EV_USE_SIGNALFD
320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
321# define EV_USE_SIGNALFD EV_FEATURE_OS
322# else
323# define EV_USE_SIGNALFD 0
245# endif 324# endif
246#endif 325#endif
247 326
248#if 0 /* debugging */ 327#if 0 /* debugging */
249# define EV_VERIFY 3 328# define EV_VERIFY 3
250# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
252#endif 331#endif
253 332
254#ifndef EV_VERIFY 333#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
256#endif 335#endif
257 336
258#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
260#endif 339#endif
261 340
262#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif
344
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h>
349# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1
353# else
354# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0
356# endif
264#endif 357#endif
265 358
266/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 359/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
267 366
268#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
269# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
270# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
271#endif 370#endif
… …
285# include <sys/select.h> 384# include <sys/select.h>
286# endif 385# endif
287#endif 386#endif
288 387
289#if EV_USE_INOTIFY 388#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h>
290# include <sys/inotify.h> 391# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0
396# endif
291#endif 397#endif
292 398
293#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h> 400# include <winsock.h>
295#endif 401#endif
296 402
297#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h> 405# include <stdint.h>
406# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK
408# endif
409# ifndef EFD_CLOEXEC
410# ifdef O_CLOEXEC
411# define EFD_CLOEXEC O_CLOEXEC
412# else
413# define EFD_CLOEXEC 02000000
414# endif
415# endif
300# ifdef __cplusplus 416# ifdef __cplusplus
301extern "C" { 417extern "C" {
302# endif 418# endif
303int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
304# ifdef __cplusplus 420# ifdef __cplusplus
305} 421}
306# endif 422# endif
307#endif 423#endif
308 424
425#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h>
428# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK
430# endif
431# ifndef SFD_CLOEXEC
432# ifdef O_CLOEXEC
433# define SFD_CLOEXEC O_CLOEXEC
434# else
435# define SFD_CLOEXEC 02000000
436# endif
437# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags);
442
443struct signalfd_siginfo
444{
445 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)];
447};
448# ifdef __cplusplus
449}
450# endif
451#endif
452
453
309/**/ 454/**/
310 455
311#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
313#else 458#else
314# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
315#endif 460#endif
316 461
317/* 462/*
… …
324 */ 469 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
326 471
327#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
328#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
330 474
331#if __GNUC__ >= 4 475#if __GNUC__ >= 4
332# define expect(expr,value) __builtin_expect ((expr),(value)) 476# define expect(expr,value) __builtin_expect ((expr),(value))
333# define noinline __attribute__ ((noinline)) 477# define noinline __attribute__ ((noinline))
334#else 478#else
… …
341 485
342#define expect_false(expr) expect ((expr) != 0, 0) 486#define expect_false(expr) expect ((expr) != 0, 0)
343#define expect_true(expr) expect ((expr) != 0, 1) 487#define expect_true(expr) expect ((expr) != 0, 1)
344#define inline_size static inline 488#define inline_size static inline
345 489
346#if EV_MINIMAL 490#if EV_FEATURE_CODE
491# define inline_speed static inline
492#else
347# define inline_speed static noinline 493# define inline_speed static noinline
494#endif
495
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
497
498#if EV_MINPRI == EV_MAXPRI
499# define ABSPRI(w) (((W)w), 0)
348#else 500#else
349# define inline_speed static inline
350#endif
351
352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif
354 503
355#define EMPTY /* required for microsofts broken pseudo-c compiler */ 504#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */ 505#define EMPTY2(a,b) /* used to suppress some warnings */
357 506
358typedef ev_watcher *W; 507typedef ev_watcher *W;
… …
360typedef ev_watcher_time *WT; 509typedef ev_watcher_time *WT;
361 510
362#define ev_active(w) ((W)(w))->active 511#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at 512#define ev_at(w) ((WT)(w))->at
364 513
514#if EV_USE_REALTIME
515/* sig_atomic_t is used to avoid per-thread variables or locking but still */
516/* giving it a reasonably high chance of working on typical architectures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif
519
365#if EV_USE_MONOTONIC 520#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
522#endif
523
524#ifndef EV_FD_TO_WIN32_HANDLE
525# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
526#endif
527#ifndef EV_WIN32_HANDLE_TO_FD
528# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
529#endif
530#ifndef EV_WIN32_CLOSE_FD
531# define EV_WIN32_CLOSE_FD(fd) close (fd)
369#endif 532#endif
370 533
371#ifdef _WIN32 534#ifdef _WIN32
372# include "ev_win32.c" 535# include "ev_win32.c"
373#endif 536#endif
374 537
375/*****************************************************************************/ 538/*****************************************************************************/
376 539
540#if EV_AVOID_STDIO
541static void noinline
542ev_printerr (const char *msg)
543{
544 write (STDERR_FILENO, msg, strlen (msg));
545}
546#endif
547
377static void (*syserr_cb)(const char *msg); 548static void (*syserr_cb)(const char *msg);
378 549
379void 550void
380ev_set_syserr_cb (void (*cb)(const char *msg)) 551ev_set_syserr_cb (void (*cb)(const char *msg))
381{ 552{
382 syserr_cb = cb; 553 syserr_cb = cb;
383} 554}
384 555
385static void noinline 556static void noinline
386syserr (const char *msg) 557ev_syserr (const char *msg)
387{ 558{
388 if (!msg) 559 if (!msg)
389 msg = "(libev) system error"; 560 msg = "(libev) system error";
390 561
391 if (syserr_cb) 562 if (syserr_cb)
392 syserr_cb (msg); 563 syserr_cb (msg);
393 else 564 else
394 { 565 {
566#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg);
570 ev_printerr (": ");
571 ev_printerr (err);
572 ev_printerr ("\n");
573#else
395 perror (msg); 574 perror (msg);
575#endif
396 abort (); 576 abort ();
397 } 577 }
398} 578}
399 579
400static void * 580static void *
401ev_realloc_emul (void *ptr, long size) 581ev_realloc_emul (void *ptr, long size)
402{ 582{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
403 /* some systems, notably openbsd and darwin, fail to properly 586 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and 587 * implement realloc (x, 0) (as required by both ansi c-89 and
405 * the single unix specification, so work around them here. 588 * the single unix specification, so work around them here.
406 */ 589 */
407 590
408 if (size) 591 if (size)
409 return realloc (ptr, size); 592 return realloc (ptr, size);
410 593
411 free (ptr); 594 free (ptr);
412 return 0; 595 return 0;
596#endif
413} 597}
414 598
415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
416 600
417void 601void
… …
425{ 609{
426 ptr = alloc (ptr, size); 610 ptr = alloc (ptr, size);
427 611
428 if (!ptr && size) 612 if (!ptr && size)
429 { 613 {
614#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n");
616#else
430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
618#endif
431 abort (); 619 abort ();
432 } 620 }
433 621
434 return ptr; 622 return ptr;
435} 623}
… …
437#define ev_malloc(size) ev_realloc (0, (size)) 625#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0) 626#define ev_free(ptr) ev_realloc ((ptr), 0)
439 627
440/*****************************************************************************/ 628/*****************************************************************************/
441 629
630/* set in reify when reification needed */
631#define EV_ANFD_REIFY 1
632
633/* file descriptor info structure */
442typedef struct 634typedef struct
443{ 635{
444 WL head; 636 WL head;
445 unsigned char events; 637 unsigned char events; /* the events watched for */
638 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446 unsigned char reify; 640 unsigned char unused;
641#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif
447#if EV_SELECT_IS_WINSOCKET 644#if EV_SELECT_IS_WINSOCKET
448 SOCKET handle; 645 SOCKET handle;
449#endif 646#endif
450} ANFD; 647} ANFD;
451 648
649/* stores the pending event set for a given watcher */
452typedef struct 650typedef struct
453{ 651{
454 W w; 652 W w;
455 int events; 653 int events; /* the pending event set for the given watcher */
456} ANPENDING; 654} ANPENDING;
457 655
458#if EV_USE_INOTIFY 656#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */ 657/* hash table entry per inotify-id */
460typedef struct 658typedef struct
… …
463} ANFS; 661} ANFS;
464#endif 662#endif
465 663
466/* Heap Entry */ 664/* Heap Entry */
467#if EV_HEAP_CACHE_AT 665#if EV_HEAP_CACHE_AT
666 /* a heap element */
468 typedef struct { 667 typedef struct {
469 ev_tstamp at; 668 ev_tstamp at;
470 WT w; 669 WT w;
471 } ANHE; 670 } ANHE;
472 671
473 #define ANHE_w(he) (he).w /* access watcher, read-write */ 672 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */ 673 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 674 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else 675#else
676 /* a heap element */
477 typedef WT ANHE; 677 typedef WT ANHE;
478 678
479 #define ANHE_w(he) (he) 679 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at 680 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he) 681 #define ANHE_at_cache(he)
… …
505 705
506 static int ev_default_loop_ptr; 706 static int ev_default_loop_ptr;
507 707
508#endif 708#endif
509 709
710#if EV_FEATURE_API
711# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
712# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
713# define EV_INVOKE_PENDING invoke_cb (EV_A)
714#else
715# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif
719
720#define EVUNLOOP_RECURSE 0x80
721
510/*****************************************************************************/ 722/*****************************************************************************/
511 723
724#ifndef EV_HAVE_EV_TIME
512ev_tstamp 725ev_tstamp
513ev_time (void) 726ev_time (void)
514{ 727{
515#if EV_USE_REALTIME 728#if EV_USE_REALTIME
729 if (expect_true (have_realtime))
730 {
516 struct timespec ts; 731 struct timespec ts;
517 clock_gettime (CLOCK_REALTIME, &ts); 732 clock_gettime (CLOCK_REALTIME, &ts);
518 return ts.tv_sec + ts.tv_nsec * 1e-9; 733 return ts.tv_sec + ts.tv_nsec * 1e-9;
519#else 734 }
735#endif
736
520 struct timeval tv; 737 struct timeval tv;
521 gettimeofday (&tv, 0); 738 gettimeofday (&tv, 0);
522 return tv.tv_sec + tv.tv_usec * 1e-6; 739 return tv.tv_sec + tv.tv_usec * 1e-6;
523#endif
524} 740}
741#endif
525 742
526ev_tstamp inline_size 743inline_size ev_tstamp
527get_clock (void) 744get_clock (void)
528{ 745{
529#if EV_USE_MONOTONIC 746#if EV_USE_MONOTONIC
530 if (expect_true (have_monotonic)) 747 if (expect_true (have_monotonic))
531 { 748 {
… …
564 struct timeval tv; 781 struct timeval tv;
565 782
566 tv.tv_sec = (time_t)delay; 783 tv.tv_sec = (time_t)delay;
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568 785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */
569 select (0, 0, 0, 0, &tv); 789 select (0, 0, 0, 0, &tv);
570#endif 790#endif
571 } 791 }
572} 792}
573 793
574/*****************************************************************************/ 794/*****************************************************************************/
575 795
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 796#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577 797
578int inline_size 798/* find a suitable new size for the given array, */
799/* hopefully by rounding to a nice-to-malloc size */
800inline_size int
579array_nextsize (int elem, int cur, int cnt) 801array_nextsize (int elem, int cur, int cnt)
580{ 802{
581 int ncur = cur + 1; 803 int ncur = cur + 1;
582 804
583 do 805 do
… …
600array_realloc (int elem, void *base, int *cur, int cnt) 822array_realloc (int elem, void *base, int *cur, int cnt)
601{ 823{
602 *cur = array_nextsize (elem, *cur, cnt); 824 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur); 825 return ev_realloc (base, elem * *cur);
604} 826}
827
828#define array_init_zero(base,count) \
829 memset ((void *)(base), 0, sizeof (*(base)) * (count))
605 830
606#define array_needsize(type,base,cur,cnt,init) \ 831#define array_needsize(type,base,cur,cnt,init) \
607 if (expect_false ((cnt) > (cur))) \ 832 if (expect_false ((cnt) > (cur))) \
608 { \ 833 { \
609 int ocur_ = (cur); \ 834 int ocur_ = (cur); \
… …
621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 846 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622 } 847 }
623#endif 848#endif
624 849
625#define array_free(stem, idx) \ 850#define array_free(stem, idx) \
626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 851 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627 852
628/*****************************************************************************/ 853/*****************************************************************************/
854
855/* dummy callback for pending events */
856static void noinline
857pendingcb (EV_P_ ev_prepare *w, int revents)
858{
859}
629 860
630void noinline 861void noinline
631ev_feed_event (EV_P_ void *w, int revents) 862ev_feed_event (EV_P_ void *w, int revents)
632{ 863{
633 W w_ = (W)w; 864 W w_ = (W)w;
… …
642 pendings [pri][w_->pending - 1].w = w_; 873 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents; 874 pendings [pri][w_->pending - 1].events = revents;
644 } 875 }
645} 876}
646 877
647void inline_speed 878inline_speed void
879feed_reverse (EV_P_ W w)
880{
881 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
882 rfeeds [rfeedcnt++] = w;
883}
884
885inline_size void
886feed_reverse_done (EV_P_ int revents)
887{
888 do
889 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
890 while (rfeedcnt);
891}
892
893inline_speed void
648queue_events (EV_P_ W *events, int eventcnt, int type) 894queue_events (EV_P_ W *events, int eventcnt, int type)
649{ 895{
650 int i; 896 int i;
651 897
652 for (i = 0; i < eventcnt; ++i) 898 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type); 899 ev_feed_event (EV_A_ events [i], type);
654} 900}
655 901
656/*****************************************************************************/ 902/*****************************************************************************/
657 903
658void inline_size 904inline_speed void
659anfds_init (ANFD *base, int count)
660{
661 while (count--)
662 {
663 base->head = 0;
664 base->events = EV_NONE;
665 base->reify = 0;
666
667 ++base;
668 }
669}
670
671void inline_speed
672fd_event (EV_P_ int fd, int revents) 905fd_event_nocheck (EV_P_ int fd, int revents)
673{ 906{
674 ANFD *anfd = anfds + fd; 907 ANFD *anfd = anfds + fd;
675 ev_io *w; 908 ev_io *w;
676 909
677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
681 if (ev) 914 if (ev)
682 ev_feed_event (EV_A_ (W)w, ev); 915 ev_feed_event (EV_A_ (W)w, ev);
683 } 916 }
684} 917}
685 918
919/* do not submit kernel events for fds that have reify set */
920/* because that means they changed while we were polling for new events */
921inline_speed void
922fd_event (EV_P_ int fd, int revents)
923{
924 ANFD *anfd = anfds + fd;
925
926 if (expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents);
928}
929
686void 930void
687ev_feed_fd_event (EV_P_ int fd, int revents) 931ev_feed_fd_event (EV_P_ int fd, int revents)
688{ 932{
689 if (fd >= 0 && fd < anfdmax) 933 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents); 934 fd_event_nocheck (EV_A_ fd, revents);
691} 935}
692 936
693void inline_size 937/* make sure the external fd watch events are in-sync */
938/* with the kernel/libev internal state */
939inline_size void
694fd_reify (EV_P) 940fd_reify (EV_P)
695{ 941{
696 int i; 942 int i;
697 943
698 for (i = 0; i < fdchangecnt; ++i) 944 for (i = 0; i < fdchangecnt; ++i)
… …
708 954
709#if EV_SELECT_IS_WINSOCKET 955#if EV_SELECT_IS_WINSOCKET
710 if (events) 956 if (events)
711 { 957 {
712 unsigned long arg; 958 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
716 anfd->handle = _get_osfhandle (fd);
717 #endif
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719 } 961 }
720#endif 962#endif
721 963
722 { 964 {
723 unsigned char o_events = anfd->events; 965 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify; 966 unsigned char o_reify = anfd->reify;
725 967
726 anfd->reify = 0; 968 anfd->reify = 0;
727 anfd->events = events; 969 anfd->events = events;
728 970
729 if (o_events != events || o_reify & EV_IOFDSET) 971 if (o_events != events || o_reify & EV__IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events); 972 backend_modify (EV_A_ fd, o_events, events);
731 } 973 }
732 } 974 }
733 975
734 fdchangecnt = 0; 976 fdchangecnt = 0;
735} 977}
736 978
737void inline_size 979/* something about the given fd changed */
980inline_size void
738fd_change (EV_P_ int fd, int flags) 981fd_change (EV_P_ int fd, int flags)
739{ 982{
740 unsigned char reify = anfds [fd].reify; 983 unsigned char reify = anfds [fd].reify;
741 anfds [fd].reify |= flags; 984 anfds [fd].reify |= flags;
742 985
… …
746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747 fdchanges [fdchangecnt - 1] = fd; 990 fdchanges [fdchangecnt - 1] = fd;
748 } 991 }
749} 992}
750 993
751void inline_speed 994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void
752fd_kill (EV_P_ int fd) 996fd_kill (EV_P_ int fd)
753{ 997{
754 ev_io *w; 998 ev_io *w;
755 999
756 while ((w = (ev_io *)anfds [fd].head)) 1000 while ((w = (ev_io *)anfds [fd].head))
… …
758 ev_io_stop (EV_A_ w); 1002 ev_io_stop (EV_A_ w);
759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760 } 1004 }
761} 1005}
762 1006
763int inline_size 1007/* check whether the given fd is actually valid, for error recovery */
1008inline_size int
764fd_valid (int fd) 1009fd_valid (int fd)
765{ 1010{
766#ifdef _WIN32 1011#ifdef _WIN32
767 return _get_osfhandle (fd) != -1; 1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
768#else 1013#else
769 return fcntl (fd, F_GETFD) != -1; 1014 return fcntl (fd, F_GETFD) != -1;
770#endif 1015#endif
771} 1016}
772 1017
… …
790 1035
791 for (fd = anfdmax; fd--; ) 1036 for (fd = anfdmax; fd--; )
792 if (anfds [fd].events) 1037 if (anfds [fd].events)
793 { 1038 {
794 fd_kill (EV_A_ fd); 1039 fd_kill (EV_A_ fd);
795 return; 1040 break;
796 } 1041 }
797} 1042}
798 1043
799/* usually called after fork if backend needs to re-arm all fds from scratch */ 1044/* usually called after fork if backend needs to re-arm all fds from scratch */
800static void noinline 1045static void noinline
… …
804 1049
805 for (fd = 0; fd < anfdmax; ++fd) 1050 for (fd = 0; fd < anfdmax; ++fd)
806 if (anfds [fd].events) 1051 if (anfds [fd].events)
807 { 1052 {
808 anfds [fd].events = 0; 1053 anfds [fd].events = 0;
1054 anfds [fd].emask = 0;
809 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1055 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810 } 1056 }
811} 1057}
812 1058
1059/* used to prepare libev internal fd's */
1060/* this is not fork-safe */
1061inline_speed void
1062fd_intern (int fd)
1063{
1064#ifdef _WIN32
1065 unsigned long arg = 1;
1066 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1067#else
1068 fcntl (fd, F_SETFD, FD_CLOEXEC);
1069 fcntl (fd, F_SETFL, O_NONBLOCK);
1070#endif
1071}
1072
813/*****************************************************************************/ 1073/*****************************************************************************/
814 1074
815/* 1075/*
816 * the heap functions want a real array index. array index 0 uis guaranteed to not 1076 * the heap functions want a real array index. array index 0 is guaranteed to not
817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1077 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
818 * the branching factor of the d-tree. 1078 * the branching factor of the d-tree.
819 */ 1079 */
820 1080
821/* 1081/*
… …
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1090#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1091#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k)) 1092#define UPHEAP_DONE(p,k) ((p) == (k))
833 1093
834/* away from the root */ 1094/* away from the root */
835void inline_speed 1095inline_speed void
836downheap (ANHE *heap, int N, int k) 1096downheap (ANHE *heap, int N, int k)
837{ 1097{
838 ANHE he = heap [k]; 1098 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0; 1099 ANHE *E = heap + N + HEAP0;
840 1100
… …
880#define HEAP0 1 1140#define HEAP0 1
881#define HPARENT(k) ((k) >> 1) 1141#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p)) 1142#define UPHEAP_DONE(p,k) (!(p))
883 1143
884/* away from the root */ 1144/* away from the root */
885void inline_speed 1145inline_speed void
886downheap (ANHE *heap, int N, int k) 1146downheap (ANHE *heap, int N, int k)
887{ 1147{
888 ANHE he = heap [k]; 1148 ANHE he = heap [k];
889 1149
890 for (;;) 1150 for (;;)
891 { 1151 {
892 int c = k << 1; 1152 int c = k << 1;
893 1153
894 if (c > N + HEAP0 - 1) 1154 if (c >= N + HEAP0)
895 break; 1155 break;
896 1156
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1157 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0; 1158 ? 1 : 0;
899 1159
… …
910 ev_active (ANHE_w (he)) = k; 1170 ev_active (ANHE_w (he)) = k;
911} 1171}
912#endif 1172#endif
913 1173
914/* towards the root */ 1174/* towards the root */
915void inline_speed 1175inline_speed void
916upheap (ANHE *heap, int k) 1176upheap (ANHE *heap, int k)
917{ 1177{
918 ANHE he = heap [k]; 1178 ANHE he = heap [k];
919 1179
920 for (;;) 1180 for (;;)
… …
931 1191
932 heap [k] = he; 1192 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 1193 ev_active (ANHE_w (he)) = k;
934} 1194}
935 1195
936void inline_size 1196/* move an element suitably so it is in a correct place */
1197inline_size void
937adjustheap (ANHE *heap, int N, int k) 1198adjustheap (ANHE *heap, int N, int k)
938{ 1199{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1200 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
940 upheap (heap, k); 1201 upheap (heap, k);
941 else 1202 else
942 downheap (heap, N, k); 1203 downheap (heap, N, k);
943} 1204}
944 1205
945/* rebuild the heap: this function is used only once and executed rarely */ 1206/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size 1207inline_size void
947reheap (ANHE *heap, int N) 1208reheap (ANHE *heap, int N)
948{ 1209{
949 int i; 1210 int i;
950 1211
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1212 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
954 upheap (heap, i + HEAP0); 1215 upheap (heap, i + HEAP0);
955} 1216}
956 1217
957/*****************************************************************************/ 1218/*****************************************************************************/
958 1219
1220/* associate signal watchers to a signal signal */
959typedef struct 1221typedef struct
960{ 1222{
1223 EV_ATOMIC_T pending;
1224#if EV_MULTIPLICITY
1225 EV_P;
1226#endif
961 WL head; 1227 WL head;
962 EV_ATOMIC_T gotsig;
963} ANSIG; 1228} ANSIG;
964 1229
965static ANSIG *signals; 1230static ANSIG signals [EV_NSIG - 1];
966static int signalmax;
967
968static EV_ATOMIC_T gotsig;
969
970void inline_size
971signals_init (ANSIG *base, int count)
972{
973 while (count--)
974 {
975 base->head = 0;
976 base->gotsig = 0;
977
978 ++base;
979 }
980}
981 1231
982/*****************************************************************************/ 1232/*****************************************************************************/
983 1233
984void inline_speed 1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
985fd_intern (int fd)
986{
987#ifdef _WIN32
988 unsigned long arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif
994}
995 1235
996static void noinline 1236static void noinline
997evpipe_init (EV_P) 1237evpipe_init (EV_P)
998{ 1238{
999 if (!ev_is_active (&pipeev)) 1239 if (!ev_is_active (&pipe_w))
1000 { 1240 {
1001#if EV_USE_EVENTFD 1241# if EV_USE_EVENTFD
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL)
1002 if ((evfd = eventfd (0, 0)) >= 0) 1244 evfd = eventfd (0, 0);
1245
1246 if (evfd >= 0)
1003 { 1247 {
1004 evpipe [0] = -1; 1248 evpipe [0] = -1;
1005 fd_intern (evfd); 1249 fd_intern (evfd); /* doing it twice doesn't hurt */
1006 ev_io_set (&pipeev, evfd, EV_READ); 1250 ev_io_set (&pipe_w, evfd, EV_READ);
1007 } 1251 }
1008 else 1252 else
1009#endif 1253# endif
1010 { 1254 {
1011 while (pipe (evpipe)) 1255 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe"); 1256 ev_syserr ("(libev) error creating signal/async pipe");
1013 1257
1014 fd_intern (evpipe [0]); 1258 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]); 1259 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ); 1260 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017 } 1261 }
1018 1262
1019 ev_io_start (EV_A_ &pipeev); 1263 ev_io_start (EV_A_ &pipe_w);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */ 1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 } 1265 }
1022} 1266}
1023 1267
1024void inline_size 1268inline_size void
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{ 1270{
1027 if (!*flag) 1271 if (!*flag)
1028 { 1272 {
1029 int old_errno = errno; /* save errno because write might clobber it */ 1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1030 1275
1031 *flag = 1; 1276 *flag = 1;
1032 1277
1033#if EV_USE_EVENTFD 1278#if EV_USE_EVENTFD
1034 if (evfd >= 0) 1279 if (evfd >= 0)
… …
1036 uint64_t counter = 1; 1281 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t)); 1282 write (evfd, &counter, sizeof (uint64_t));
1038 } 1283 }
1039 else 1284 else
1040#endif 1285#endif
1041 write (evpipe [1], &old_errno, 1); 1286 write (evpipe [1], &dummy, 1);
1042 1287
1043 errno = old_errno; 1288 errno = old_errno;
1044 } 1289 }
1045} 1290}
1046 1291
1292/* called whenever the libev signal pipe */
1293/* got some events (signal, async) */
1047static void 1294static void
1048pipecb (EV_P_ ev_io *iow, int revents) 1295pipecb (EV_P_ ev_io *iow, int revents)
1049{ 1296{
1297 int i;
1298
1050#if EV_USE_EVENTFD 1299#if EV_USE_EVENTFD
1051 if (evfd >= 0) 1300 if (evfd >= 0)
1052 { 1301 {
1053 uint64_t counter; 1302 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t)); 1303 read (evfd, &counter, sizeof (uint64_t));
… …
1058 { 1307 {
1059 char dummy; 1308 char dummy;
1060 read (evpipe [0], &dummy, 1); 1309 read (evpipe [0], &dummy, 1);
1061 } 1310 }
1062 1311
1063 if (gotsig && ev_is_default_loop (EV_A)) 1312 if (sig_pending)
1064 { 1313 {
1065 int signum; 1314 sig_pending = 0;
1066 gotsig = 0;
1067 1315
1068 for (signum = signalmax; signum--; ) 1316 for (i = EV_NSIG - 1; i--; )
1069 if (signals [signum].gotsig) 1317 if (expect_false (signals [i].pending))
1070 ev_feed_signal_event (EV_A_ signum + 1); 1318 ev_feed_signal_event (EV_A_ i + 1);
1071 } 1319 }
1072 1320
1073#if EV_ASYNC_ENABLE 1321#if EV_ASYNC_ENABLE
1074 if (gotasync) 1322 if (async_pending)
1075 { 1323 {
1076 int i; 1324 async_pending = 0;
1077 gotasync = 0;
1078 1325
1079 for (i = asynccnt; i--; ) 1326 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent) 1327 if (asyncs [i]->sent)
1081 { 1328 {
1082 asyncs [i]->sent = 0; 1329 asyncs [i]->sent = 0;
… …
1090 1337
1091static void 1338static void
1092ev_sighandler (int signum) 1339ev_sighandler (int signum)
1093{ 1340{
1094#if EV_MULTIPLICITY 1341#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct; 1342 EV_P = signals [signum - 1].loop;
1096#endif 1343#endif
1097 1344
1098#if _WIN32 1345#ifdef _WIN32
1099 signal (signum, ev_sighandler); 1346 signal (signum, ev_sighandler);
1100#endif 1347#endif
1101 1348
1102 signals [signum - 1].gotsig = 1; 1349 signals [signum - 1].pending = 1;
1103 evpipe_write (EV_A_ &gotsig); 1350 evpipe_write (EV_A_ &sig_pending);
1104} 1351}
1105 1352
1106void noinline 1353void noinline
1107ev_feed_signal_event (EV_P_ int signum) 1354ev_feed_signal_event (EV_P_ int signum)
1108{ 1355{
1109 WL w; 1356 WL w;
1110 1357
1358 if (expect_false (signum <= 0 || signum > EV_NSIG))
1359 return;
1360
1361 --signum;
1362
1111#if EV_MULTIPLICITY 1363#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1364 /* it is permissible to try to feed a signal to the wrong loop */
1113#endif 1365 /* or, likely more useful, feeding a signal nobody is waiting for */
1114 1366
1115 --signum; 1367 if (expect_false (signals [signum].loop != EV_A))
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return; 1368 return;
1369#endif
1119 1370
1120 signals [signum].gotsig = 0; 1371 signals [signum].pending = 0;
1121 1372
1122 for (w = signals [signum].head; w; w = w->next) 1373 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1374 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124} 1375}
1125 1376
1377#if EV_USE_SIGNALFD
1378static void
1379sigfdcb (EV_P_ ev_io *iow, int revents)
1380{
1381 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1382
1383 for (;;)
1384 {
1385 ssize_t res = read (sigfd, si, sizeof (si));
1386
1387 /* not ISO-C, as res might be -1, but works with SuS */
1388 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1389 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1390
1391 if (res < (ssize_t)sizeof (si))
1392 break;
1393 }
1394}
1395#endif
1396
1397#endif
1398
1126/*****************************************************************************/ 1399/*****************************************************************************/
1127 1400
1401#if EV_CHILD_ENABLE
1128static WL childs [EV_PID_HASHSIZE]; 1402static WL childs [EV_PID_HASHSIZE];
1129
1130#ifndef _WIN32
1131 1403
1132static ev_signal childev; 1404static ev_signal childev;
1133 1405
1134#ifndef WIFCONTINUED 1406#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0 1407# define WIFCONTINUED(status) 0
1136#endif 1408#endif
1137 1409
1138void inline_speed 1410/* handle a single child status event */
1411inline_speed void
1139child_reap (EV_P_ int chain, int pid, int status) 1412child_reap (EV_P_ int chain, int pid, int status)
1140{ 1413{
1141 ev_child *w; 1414 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1415 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143 1416
1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1417 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 { 1418 {
1146 if ((w->pid == pid || !w->pid) 1419 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1))) 1420 && (!traced || (w->flags & 1)))
1148 { 1421 {
1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1422 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1156 1429
1157#ifndef WCONTINUED 1430#ifndef WCONTINUED
1158# define WCONTINUED 0 1431# define WCONTINUED 0
1159#endif 1432#endif
1160 1433
1434/* called on sigchld etc., calls waitpid */
1161static void 1435static void
1162childcb (EV_P_ ev_signal *sw, int revents) 1436childcb (EV_P_ ev_signal *sw, int revents)
1163{ 1437{
1164 int pid, status; 1438 int pid, status;
1165 1439
… …
1173 /* make sure we are called again until all children have been reaped */ 1447 /* make sure we are called again until all children have been reaped */
1174 /* we need to do it this way so that the callback gets called before we continue */ 1448 /* we need to do it this way so that the callback gets called before we continue */
1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1449 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1176 1450
1177 child_reap (EV_A_ pid, pid, status); 1451 child_reap (EV_A_ pid, pid, status);
1178 if (EV_PID_HASHSIZE > 1) 1452 if ((EV_PID_HASHSIZE) > 1)
1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1453 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1180} 1454}
1181 1455
1182#endif 1456#endif
1183 1457
… …
1246 /* kqueue is borked on everything but netbsd apparently */ 1520 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */ 1521 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE; 1522 flags &= ~EVBACKEND_KQUEUE;
1249#endif 1523#endif
1250#ifdef __APPLE__ 1524#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation 1525 /* only select works correctly on that "unix-certified" platform */
1252 flags &= ~EVBACKEND_POLL; 1526 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1527 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1528#endif
1529#ifdef __FreeBSD__
1530 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1253#endif 1531#endif
1254 1532
1255 return flags; 1533 return flags;
1256} 1534}
1257 1535
… …
1271ev_backend (EV_P) 1549ev_backend (EV_P)
1272{ 1550{
1273 return backend; 1551 return backend;
1274} 1552}
1275 1553
1554#if EV_FEATURE_API
1276unsigned int 1555unsigned int
1277ev_loop_count (EV_P) 1556ev_iteration (EV_P)
1278{ 1557{
1279 return loop_count; 1558 return loop_count;
1280} 1559}
1281 1560
1561unsigned int
1562ev_depth (EV_P)
1563{
1564 return loop_depth;
1565}
1566
1282void 1567void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1569{
1285 io_blocktime = interval; 1570 io_blocktime = interval;
1286} 1571}
… …
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1575{
1291 timeout_blocktime = interval; 1576 timeout_blocktime = interval;
1292} 1577}
1293 1578
1579void
1580ev_set_userdata (EV_P_ void *data)
1581{
1582 userdata = data;
1583}
1584
1585void *
1586ev_userdata (EV_P)
1587{
1588 return userdata;
1589}
1590
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1592{
1593 invoke_cb = invoke_pending_cb;
1594}
1595
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1597{
1598 release_cb = release;
1599 acquire_cb = acquire;
1600}
1601#endif
1602
1603/* initialise a loop structure, must be zero-initialised */
1294static void noinline 1604static void noinline
1295loop_init (EV_P_ unsigned int flags) 1605loop_init (EV_P_ unsigned int flags)
1296{ 1606{
1297 if (!backend) 1607 if (!backend)
1298 { 1608 {
1609#if EV_USE_REALTIME
1610 if (!have_realtime)
1611 {
1612 struct timespec ts;
1613
1614 if (!clock_gettime (CLOCK_REALTIME, &ts))
1615 have_realtime = 1;
1616 }
1617#endif
1618
1299#if EV_USE_MONOTONIC 1619#if EV_USE_MONOTONIC
1620 if (!have_monotonic)
1300 { 1621 {
1301 struct timespec ts; 1622 struct timespec ts;
1623
1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1624 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303 have_monotonic = 1; 1625 have_monotonic = 1;
1304 } 1626 }
1305#endif 1627#endif
1628
1629 /* pid check not overridable via env */
1630#ifndef _WIN32
1631 if (flags & EVFLAG_FORKCHECK)
1632 curpid = getpid ();
1633#endif
1634
1635 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS"));
1306 1639
1307 ev_rt_now = ev_time (); 1640 ev_rt_now = ev_time ();
1308 mn_now = get_clock (); 1641 mn_now = get_clock ();
1309 now_floor = mn_now; 1642 now_floor = mn_now;
1310 rtmn_diff = ev_rt_now - mn_now; 1643 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending;
1646#endif
1311 1647
1312 io_blocktime = 0.; 1648 io_blocktime = 0.;
1313 timeout_blocktime = 0.; 1649 timeout_blocktime = 0.;
1314 backend = 0; 1650 backend = 0;
1315 backend_fd = -1; 1651 backend_fd = -1;
1316 gotasync = 0; 1652 sig_pending = 0;
1653#if EV_ASYNC_ENABLE
1654 async_pending = 0;
1655#endif
1317#if EV_USE_INOTIFY 1656#if EV_USE_INOTIFY
1318 fs_fd = -2; 1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1319#endif 1658#endif
1320 1659#if EV_USE_SIGNALFD
1321 /* pid check not overridable via env */ 1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1322#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK)
1324 curpid = getpid ();
1325#endif 1661#endif
1326
1327 if (!(flags & EVFLAG_NOENV)
1328 && !enable_secure ()
1329 && getenv ("LIBEV_FLAGS"))
1330 flags = atoi (getenv ("LIBEV_FLAGS"));
1331 1662
1332 if (!(flags & 0x0000ffffU)) 1663 if (!(flags & 0x0000ffffU))
1333 flags |= ev_recommended_backends (); 1664 flags |= ev_recommended_backends ();
1334 1665
1335#if EV_USE_PORT 1666#if EV_USE_PORT
… …
1346#endif 1677#endif
1347#if EV_USE_SELECT 1678#if EV_USE_SELECT
1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1679 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349#endif 1680#endif
1350 1681
1682 ev_prepare_init (&pending_w, pendingcb);
1683
1684#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1351 ev_init (&pipeev, pipecb); 1685 ev_init (&pipe_w, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI); 1686 ev_set_priority (&pipe_w, EV_MAXPRI);
1687#endif
1353 } 1688 }
1354} 1689}
1355 1690
1691/* free up a loop structure */
1356static void noinline 1692static void noinline
1357loop_destroy (EV_P) 1693loop_destroy (EV_P)
1358{ 1694{
1359 int i; 1695 int i;
1360 1696
1361 if (ev_is_active (&pipeev)) 1697 if (ev_is_active (&pipe_w))
1362 { 1698 {
1363 ev_ref (EV_A); /* signal watcher */ 1699 /*ev_ref (EV_A);*/
1364 ev_io_stop (EV_A_ &pipeev); 1700 /*ev_io_stop (EV_A_ &pipe_w);*/
1365 1701
1366#if EV_USE_EVENTFD 1702#if EV_USE_EVENTFD
1367 if (evfd >= 0) 1703 if (evfd >= 0)
1368 close (evfd); 1704 close (evfd);
1369#endif 1705#endif
1370 1706
1371 if (evpipe [0] >= 0) 1707 if (evpipe [0] >= 0)
1372 { 1708 {
1373 close (evpipe [0]); 1709 EV_WIN32_CLOSE_FD (evpipe [0]);
1374 close (evpipe [1]); 1710 EV_WIN32_CLOSE_FD (evpipe [1]);
1375 } 1711 }
1376 } 1712 }
1713
1714#if EV_USE_SIGNALFD
1715 if (ev_is_active (&sigfd_w))
1716 close (sigfd);
1717#endif
1377 1718
1378#if EV_USE_INOTIFY 1719#if EV_USE_INOTIFY
1379 if (fs_fd >= 0) 1720 if (fs_fd >= 0)
1380 close (fs_fd); 1721 close (fs_fd);
1381#endif 1722#endif
… …
1405#if EV_IDLE_ENABLE 1746#if EV_IDLE_ENABLE
1406 array_free (idle, [i]); 1747 array_free (idle, [i]);
1407#endif 1748#endif
1408 } 1749 }
1409 1750
1410 ev_free (anfds); anfdmax = 0; 1751 ev_free (anfds); anfds = 0; anfdmax = 0;
1411 1752
1412 /* have to use the microsoft-never-gets-it-right macro */ 1753 /* have to use the microsoft-never-gets-it-right macro */
1754 array_free (rfeed, EMPTY);
1413 array_free (fdchange, EMPTY); 1755 array_free (fdchange, EMPTY);
1414 array_free (timer, EMPTY); 1756 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE 1757#if EV_PERIODIC_ENABLE
1416 array_free (periodic, EMPTY); 1758 array_free (periodic, EMPTY);
1417#endif 1759#endif
… …
1426 1768
1427 backend = 0; 1769 backend = 0;
1428} 1770}
1429 1771
1430#if EV_USE_INOTIFY 1772#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P); 1773inline_size void infy_fork (EV_P);
1432#endif 1774#endif
1433 1775
1434void inline_size 1776inline_size void
1435loop_fork (EV_P) 1777loop_fork (EV_P)
1436{ 1778{
1437#if EV_USE_PORT 1779#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1780 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif 1781#endif
… …
1445#endif 1787#endif
1446#if EV_USE_INOTIFY 1788#if EV_USE_INOTIFY
1447 infy_fork (EV_A); 1789 infy_fork (EV_A);
1448#endif 1790#endif
1449 1791
1450 if (ev_is_active (&pipeev)) 1792 if (ev_is_active (&pipe_w))
1451 { 1793 {
1452 /* this "locks" the handlers against writing to the pipe */ 1794 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */ 1795 /* while we modify the fd vars */
1454 gotsig = 1; 1796 sig_pending = 1;
1455#if EV_ASYNC_ENABLE 1797#if EV_ASYNC_ENABLE
1456 gotasync = 1; 1798 async_pending = 1;
1457#endif 1799#endif
1458 1800
1459 ev_ref (EV_A); 1801 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev); 1802 ev_io_stop (EV_A_ &pipe_w);
1461 1803
1462#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1463 if (evfd >= 0) 1805 if (evfd >= 0)
1464 close (evfd); 1806 close (evfd);
1465#endif 1807#endif
1466 1808
1467 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1468 { 1810 {
1469 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1470 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1471 } 1813 }
1472 1814
1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1473 evpipe_init (EV_A); 1816 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */ 1817 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ); 1818 pipecb (EV_A_ &pipe_w, EV_READ);
1819#endif
1476 } 1820 }
1477 1821
1478 postfork = 0; 1822 postfork = 0;
1479} 1823}
1480 1824
1481#if EV_MULTIPLICITY 1825#if EV_MULTIPLICITY
1482 1826
1483struct ev_loop * 1827struct ev_loop *
1484ev_loop_new (unsigned int flags) 1828ev_loop_new (unsigned int flags)
1485{ 1829{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 1831
1488 memset (loop, 0, sizeof (struct ev_loop)); 1832 memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 1833 loop_init (EV_A_ flags);
1491 1834
1492 if (ev_backend (EV_A)) 1835 if (ev_backend (EV_A))
1493 return loop; 1836 return EV_A;
1494 1837
1495 return 0; 1838 return 0;
1496} 1839}
1497 1840
1498void 1841void
… …
1505void 1848void
1506ev_loop_fork (EV_P) 1849ev_loop_fork (EV_P)
1507{ 1850{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1851 postfork = 1; /* must be in line with ev_default_fork */
1509} 1852}
1853#endif /* multiplicity */
1510 1854
1511#if EV_VERIFY 1855#if EV_VERIFY
1512void noinline 1856static void noinline
1513verify_watcher (EV_P_ W w) 1857verify_watcher (EV_P_ W w)
1514{ 1858{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516 1860
1517 if (w->pending) 1861 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519} 1863}
1520 1864
1521static void noinline 1865static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N) 1866verify_heap (EV_P_ ANHE *heap, int N)
1523{ 1867{
1524 int i; 1868 int i;
1525 1869
1526 for (i = HEAP0; i < N + HEAP0; ++i) 1870 for (i = HEAP0; i < N + HEAP0; ++i)
1527 { 1871 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1872 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1873 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1874 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531 1875
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 } 1877 }
1534} 1878}
1535 1879
1536static void noinline 1880static void noinline
1537array_verify (EV_P_ W *ws, int cnt) 1881array_verify (EV_P_ W *ws, int cnt)
1538{ 1882{
1539 while (cnt--) 1883 while (cnt--)
1540 { 1884 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]); 1886 verify_watcher (EV_A_ ws [cnt]);
1543 } 1887 }
1544} 1888}
1545#endif 1889#endif
1546 1890
1891#if EV_FEATURE_API
1547void 1892void
1548ev_loop_verify (EV_P) 1893ev_verify (EV_P)
1549{ 1894{
1550#if EV_VERIFY 1895#if EV_VERIFY
1551 int i; 1896 int i;
1552 WL w; 1897 WL w;
1553 1898
1554 assert (activecnt >= -1); 1899 assert (activecnt >= -1);
1555 1900
1556 assert (fdchangemax >= fdchangecnt); 1901 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i) 1902 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1903 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559 1904
1560 assert (anfdmax >= 0); 1905 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i) 1906 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next) 1907 for (w = anfds [i].head; w; w = w->next)
1563 { 1908 {
1564 verify_watcher (EV_A_ (W)w); 1909 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1910 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1911 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 } 1912 }
1568 1913
1569 assert (timermax >= timercnt); 1914 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt); 1915 verify_heap (EV_A_ timers, timercnt);
1571 1916
… …
1592#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt); 1938 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt); 1939 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif 1940#endif
1596 1941
1942#if EV_PREPARE_ENABLE
1597 assert (preparemax >= preparecnt); 1943 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt); 1944 array_verify (EV_A_ (W *)prepares, preparecnt);
1945#endif
1599 1946
1947#if EV_CHECK_ENABLE
1600 assert (checkmax >= checkcnt); 1948 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt); 1949 array_verify (EV_A_ (W *)checks, checkcnt);
1950#endif
1602 1951
1603# if 0 1952# if 0
1953#if EV_CHILD_ENABLE
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1954 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1955 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1956#endif
1606# endif 1957# endif
1607#endif 1958#endif
1608} 1959}
1609 1960#endif
1610#endif /* multiplicity */
1611 1961
1612#if EV_MULTIPLICITY 1962#if EV_MULTIPLICITY
1613struct ev_loop * 1963struct ev_loop *
1614ev_default_loop_init (unsigned int flags) 1964ev_default_loop_init (unsigned int flags)
1615#else 1965#else
… …
1618#endif 1968#endif
1619{ 1969{
1620 if (!ev_default_loop_ptr) 1970 if (!ev_default_loop_ptr)
1621 { 1971 {
1622#if EV_MULTIPLICITY 1972#if EV_MULTIPLICITY
1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1973 EV_P = ev_default_loop_ptr = &default_loop_struct;
1624#else 1974#else
1625 ev_default_loop_ptr = 1; 1975 ev_default_loop_ptr = 1;
1626#endif 1976#endif
1627 1977
1628 loop_init (EV_A_ flags); 1978 loop_init (EV_A_ flags);
1629 1979
1630 if (ev_backend (EV_A)) 1980 if (ev_backend (EV_A))
1631 { 1981 {
1632#ifndef _WIN32 1982#if EV_CHILD_ENABLE
1633 ev_signal_init (&childev, childcb, SIGCHLD); 1983 ev_signal_init (&childev, childcb, SIGCHLD);
1634 ev_set_priority (&childev, EV_MAXPRI); 1984 ev_set_priority (&childev, EV_MAXPRI);
1635 ev_signal_start (EV_A_ &childev); 1985 ev_signal_start (EV_A_ &childev);
1636 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1986 ev_unref (EV_A); /* child watcher should not keep loop alive */
1637#endif 1987#endif
… …
1645 1995
1646void 1996void
1647ev_default_destroy (void) 1997ev_default_destroy (void)
1648{ 1998{
1649#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1650 struct ev_loop *loop = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1651#endif 2001#endif
1652 2002
1653#ifndef _WIN32 2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
1654 ev_ref (EV_A); /* child watcher */ 2006 ev_ref (EV_A); /* child watcher */
1655 ev_signal_stop (EV_A_ &childev); 2007 ev_signal_stop (EV_A_ &childev);
1656#endif 2008#endif
1657 2009
1658 loop_destroy (EV_A); 2010 loop_destroy (EV_A);
… …
1660 2012
1661void 2013void
1662ev_default_fork (void) 2014ev_default_fork (void)
1663{ 2015{
1664#if EV_MULTIPLICITY 2016#if EV_MULTIPLICITY
1665 struct ev_loop *loop = ev_default_loop_ptr; 2017 EV_P = ev_default_loop_ptr;
1666#endif 2018#endif
1667 2019
1668 if (backend)
1669 postfork = 1; /* must be in line with ev_loop_fork */ 2020 postfork = 1; /* must be in line with ev_loop_fork */
1670} 2021}
1671 2022
1672/*****************************************************************************/ 2023/*****************************************************************************/
1673 2024
1674void 2025void
1675ev_invoke (EV_P_ void *w, int revents) 2026ev_invoke (EV_P_ void *w, int revents)
1676{ 2027{
1677 EV_CB_INVOKE ((W)w, revents); 2028 EV_CB_INVOKE ((W)w, revents);
1678} 2029}
1679 2030
1680void inline_speed 2031unsigned int
1681call_pending (EV_P) 2032ev_pending_count (EV_P)
2033{
2034 int pri;
2035 unsigned int count = 0;
2036
2037 for (pri = NUMPRI; pri--; )
2038 count += pendingcnt [pri];
2039
2040 return count;
2041}
2042
2043void noinline
2044ev_invoke_pending (EV_P)
1682{ 2045{
1683 int pri; 2046 int pri;
1684 2047
1685 for (pri = NUMPRI; pri--; ) 2048 for (pri = NUMPRI; pri--; )
1686 while (pendingcnt [pri]) 2049 while (pendingcnt [pri])
1687 { 2050 {
1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689 2052
1690 if (expect_true (p->w))
1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
1693 2055
1694 p->w->pending = 0; 2056 p->w->pending = 0;
1695 EV_CB_INVOKE (p->w, p->events); 2057 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK; 2058 EV_FREQUENT_CHECK;
1697 }
1698 } 2059 }
1699} 2060}
1700 2061
1701#if EV_IDLE_ENABLE 2062#if EV_IDLE_ENABLE
1702void inline_size 2063/* make idle watchers pending. this handles the "call-idle */
2064/* only when higher priorities are idle" logic */
2065inline_size void
1703idle_reify (EV_P) 2066idle_reify (EV_P)
1704{ 2067{
1705 if (expect_false (idleall)) 2068 if (expect_false (idleall))
1706 { 2069 {
1707 int pri; 2070 int pri;
… …
1719 } 2082 }
1720 } 2083 }
1721} 2084}
1722#endif 2085#endif
1723 2086
1724void inline_size 2087/* make timers pending */
2088inline_size void
1725timers_reify (EV_P) 2089timers_reify (EV_P)
1726{ 2090{
1727 EV_FREQUENT_CHECK; 2091 EV_FREQUENT_CHECK;
1728 2092
1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2093 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730 { 2094 {
1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2095 do
1732
1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735 /* first reschedule or stop timer */
1736 if (w->repeat)
1737 { 2096 {
2097 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2098
2099 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2100
2101 /* first reschedule or stop timer */
2102 if (w->repeat)
2103 {
1738 ev_at (w) += w->repeat; 2104 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now) 2105 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now; 2106 ev_at (w) = mn_now;
1741 2107
1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2108 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743 2109
1744 ANHE_at_cache (timers [HEAP0]); 2110 ANHE_at_cache (timers [HEAP0]);
1745 downheap (timers, timercnt, HEAP0); 2111 downheap (timers, timercnt, HEAP0);
2112 }
2113 else
2114 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2115
2116 EV_FREQUENT_CHECK;
2117 feed_reverse (EV_A_ (W)w);
1746 } 2118 }
1747 else 2119 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749 2120
1750 EV_FREQUENT_CHECK; 2121 feed_reverse_done (EV_A_ EV_TIMER);
1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1752 } 2122 }
1753} 2123}
1754 2124
1755#if EV_PERIODIC_ENABLE 2125#if EV_PERIODIC_ENABLE
1756void inline_size 2126/* make periodics pending */
2127inline_size void
1757periodics_reify (EV_P) 2128periodics_reify (EV_P)
1758{ 2129{
1759 EV_FREQUENT_CHECK; 2130 EV_FREQUENT_CHECK;
1760 2131
1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2132 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762 { 2133 {
1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2134 int feed_count = 0;
1764 2135
1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2136 do
1766
1767 /* first reschedule or stop timer */
1768 if (w->reschedule_cb)
1769 { 2137 {
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2139
2140 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2141
2142 /* first reschedule or stop timer */
2143 if (w->reschedule_cb)
2144 {
1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2145 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771 2146
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2147 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773 2148
1774 ANHE_at_cache (periodics [HEAP0]); 2149 ANHE_at_cache (periodics [HEAP0]);
1775 downheap (periodics, periodiccnt, HEAP0); 2150 downheap (periodics, periodiccnt, HEAP0);
2151 }
2152 else if (w->interval)
2153 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0);
2170 }
2171 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2173
2174 EV_FREQUENT_CHECK;
2175 feed_reverse (EV_A_ (W)w);
1776 } 2176 }
1777 else if (w->interval) 2177 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785 2178
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
1795 }
1796 else
1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799 EV_FREQUENT_CHECK;
1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2179 feed_reverse_done (EV_A_ EV_PERIODIC);
1801 } 2180 }
1802} 2181}
1803 2182
2183/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at least one event happens when jumping forward? */
1804static void noinline 2185static void noinline
1805periodics_reschedule (EV_P) 2186periodics_reschedule (EV_P)
1806{ 2187{
1807 int i; 2188 int i;
1808 2189
… …
1821 2202
1822 reheap (periodics, periodiccnt); 2203 reheap (periodics, periodiccnt);
1823} 2204}
1824#endif 2205#endif
1825 2206
1826void inline_speed 2207/* adjust all timers by a given offset */
2208static void noinline
2209timers_reschedule (EV_P_ ev_tstamp adjust)
2210{
2211 int i;
2212
2213 for (i = 0; i < timercnt; ++i)
2214 {
2215 ANHE *he = timers + i + HEAP0;
2216 ANHE_w (*he)->at += adjust;
2217 ANHE_at_cache (*he);
2218 }
2219}
2220
2221/* fetch new monotonic and realtime times from the kernel */
2222/* also detect if there was a timejump, and act accordingly */
2223inline_speed void
1827time_update (EV_P_ ev_tstamp max_block) 2224time_update (EV_P_ ev_tstamp max_block)
1828{ 2225{
1829 int i;
1830
1831#if EV_USE_MONOTONIC 2226#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic)) 2227 if (expect_true (have_monotonic))
1833 { 2228 {
2229 int i;
1834 ev_tstamp odiff = rtmn_diff; 2230 ev_tstamp odiff = rtmn_diff;
1835 2231
1836 mn_now = get_clock (); 2232 mn_now = get_clock ();
1837 2233
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2234 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 ev_rt_now = ev_time (); 2260 ev_rt_now = ev_time ();
1865 mn_now = get_clock (); 2261 mn_now = get_clock ();
1866 now_floor = mn_now; 2262 now_floor = mn_now;
1867 } 2263 }
1868 2264
2265 /* no timer adjustment, as the monotonic clock doesn't jump */
2266 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869# if EV_PERIODIC_ENABLE 2267# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A); 2268 periodics_reschedule (EV_A);
1871# endif 2269# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 } 2270 }
1875 else 2271 else
1876#endif 2272#endif
1877 { 2273 {
1878 ev_rt_now = ev_time (); 2274 ev_rt_now = ev_time ();
1879 2275
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2276 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 { 2277 {
2278 /* adjust timers. this is easy, as the offset is the same for all of them */
2279 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882#if EV_PERIODIC_ENABLE 2280#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A); 2281 periodics_reschedule (EV_A);
1884#endif 2282#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1892 } 2283 }
1893 2284
1894 mn_now = ev_rt_now; 2285 mn_now = ev_rt_now;
1895 } 2286 }
1896} 2287}
1897 2288
1898void 2289void
1899ev_ref (EV_P)
1900{
1901 ++activecnt;
1902}
1903
1904void
1905ev_unref (EV_P)
1906{
1907 --activecnt;
1908}
1909
1910static int loop_done;
1911
1912void
1913ev_loop (EV_P_ int flags) 2290ev_loop (EV_P_ int flags)
1914{ 2291{
2292#if EV_FEATURE_API
2293 ++loop_depth;
2294#endif
2295
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2297
1915 loop_done = EVUNLOOP_CANCEL; 2298 loop_done = EVUNLOOP_CANCEL;
1916 2299
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918 2301
1919 do 2302 do
1920 { 2303 {
1921#if EV_VERIFY >= 2 2304#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A); 2305 ev_verify (EV_A);
1923#endif 2306#endif
1924 2307
1925#ifndef _WIN32 2308#ifndef _WIN32
1926 if (expect_false (curpid)) /* penalise the forking check even more */ 2309 if (expect_false (curpid)) /* penalise the forking check even more */
1927 if (expect_false (getpid () != curpid)) 2310 if (expect_false (getpid () != curpid))
… …
1935 /* we might have forked, so queue fork handlers */ 2318 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork)) 2319 if (expect_false (postfork))
1937 if (forkcnt) 2320 if (forkcnt)
1938 { 2321 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2322 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A); 2323 EV_INVOKE_PENDING;
1941 } 2324 }
1942#endif 2325#endif
1943 2326
2327#if EV_PREPARE_ENABLE
1944 /* queue prepare watchers (and execute them) */ 2328 /* queue prepare watchers (and execute them) */
1945 if (expect_false (preparecnt)) 2329 if (expect_false (preparecnt))
1946 { 2330 {
1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2331 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948 call_pending (EV_A); 2332 EV_INVOKE_PENDING;
1949 } 2333 }
2334#endif
1950 2335
1951 if (expect_false (!activecnt)) 2336 if (expect_false (loop_done))
1952 break; 2337 break;
1953 2338
1954 /* we might have forked, so reify kernel state if necessary */ 2339 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork)) 2340 if (expect_false (postfork))
1956 loop_fork (EV_A); 2341 loop_fork (EV_A);
… …
1963 ev_tstamp waittime = 0.; 2348 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.; 2349 ev_tstamp sleeptime = 0.;
1965 2350
1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967 { 2352 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
1968 /* update time to cancel out callback processing overhead */ 2356 /* update time to cancel out callback processing overhead */
1969 time_update (EV_A_ 1e100); 2357 time_update (EV_A_ 1e100);
1970 2358
1971 waittime = MAX_BLOCKTIME; 2359 waittime = MAX_BLOCKTIME;
1972 2360
… …
1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983 if (waittime > to) waittime = to; 2371 if (waittime > to) waittime = to;
1984 } 2372 }
1985#endif 2373#endif
1986 2374
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */
1987 if (expect_false (waittime < timeout_blocktime)) 2376 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime; 2377 waittime = timeout_blocktime;
1989 2378
1990 sleeptime = waittime - backend_fudge; 2379 /* extra check because io_blocktime is commonly 0 */
1991
1992 if (expect_true (sleeptime > io_blocktime)) 2380 if (expect_false (io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 { 2381 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383
2384 if (sleeptime > waittime - backend_fudge)
2385 sleeptime = waittime - backend_fudge;
2386
2387 if (expect_true (sleeptime > 0.))
2388 {
1997 ev_sleep (sleeptime); 2389 ev_sleep (sleeptime);
1998 waittime -= sleeptime; 2390 waittime -= sleeptime;
2391 }
1999 } 2392 }
2000 } 2393 }
2001 2394
2395#if EV_FEATURE_API
2002 ++loop_count; 2396 ++loop_count;
2397#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2003 backend_poll (EV_A_ waittime); 2399 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2004 2401
2005 /* update ev_rt_now, do magic */ 2402 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime); 2403 time_update (EV_A_ waittime + sleeptime);
2007 } 2404 }
2008 2405
… …
2015#if EV_IDLE_ENABLE 2412#if EV_IDLE_ENABLE
2016 /* queue idle watchers unless other events are pending */ 2413 /* queue idle watchers unless other events are pending */
2017 idle_reify (EV_A); 2414 idle_reify (EV_A);
2018#endif 2415#endif
2019 2416
2417#if EV_CHECK_ENABLE
2020 /* queue check watchers, to be executed first */ 2418 /* queue check watchers, to be executed first */
2021 if (expect_false (checkcnt)) 2419 if (expect_false (checkcnt))
2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2420 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2421#endif
2023 2422
2024 call_pending (EV_A); 2423 EV_INVOKE_PENDING;
2025 } 2424 }
2026 while (expect_true ( 2425 while (expect_true (
2027 activecnt 2426 activecnt
2028 && !loop_done 2427 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 )); 2429 ));
2031 2430
2032 if (loop_done == EVUNLOOP_ONE) 2431 if (loop_done == EVUNLOOP_ONE)
2033 loop_done = EVUNLOOP_CANCEL; 2432 loop_done = EVUNLOOP_CANCEL;
2433
2434#if EV_FEATURE_API
2435 --loop_depth;
2436#endif
2034} 2437}
2035 2438
2036void 2439void
2037ev_unloop (EV_P_ int how) 2440ev_unloop (EV_P_ int how)
2038{ 2441{
2039 loop_done = how; 2442 loop_done = how;
2040} 2443}
2041 2444
2445void
2446ev_ref (EV_P)
2447{
2448 ++activecnt;
2449}
2450
2451void
2452ev_unref (EV_P)
2453{
2454 --activecnt;
2455}
2456
2457void
2458ev_now_update (EV_P)
2459{
2460 time_update (EV_A_ 1e100);
2461}
2462
2463void
2464ev_suspend (EV_P)
2465{
2466 ev_now_update (EV_A);
2467}
2468
2469void
2470ev_resume (EV_P)
2471{
2472 ev_tstamp mn_prev = mn_now;
2473
2474 ev_now_update (EV_A);
2475 timers_reschedule (EV_A_ mn_now - mn_prev);
2476#if EV_PERIODIC_ENABLE
2477 /* TODO: really do this? */
2478 periodics_reschedule (EV_A);
2479#endif
2480}
2481
2042/*****************************************************************************/ 2482/*****************************************************************************/
2483/* singly-linked list management, used when the expected list length is short */
2043 2484
2044void inline_size 2485inline_size void
2045wlist_add (WL *head, WL elem) 2486wlist_add (WL *head, WL elem)
2046{ 2487{
2047 elem->next = *head; 2488 elem->next = *head;
2048 *head = elem; 2489 *head = elem;
2049} 2490}
2050 2491
2051void inline_size 2492inline_size void
2052wlist_del (WL *head, WL elem) 2493wlist_del (WL *head, WL elem)
2053{ 2494{
2054 while (*head) 2495 while (*head)
2055 { 2496 {
2056 if (*head == elem) 2497 if (expect_true (*head == elem))
2057 { 2498 {
2058 *head = elem->next; 2499 *head = elem->next;
2059 return; 2500 break;
2060 } 2501 }
2061 2502
2062 head = &(*head)->next; 2503 head = &(*head)->next;
2063 } 2504 }
2064} 2505}
2065 2506
2066void inline_speed 2507/* internal, faster, version of ev_clear_pending */
2508inline_speed void
2067clear_pending (EV_P_ W w) 2509clear_pending (EV_P_ W w)
2068{ 2510{
2069 if (w->pending) 2511 if (w->pending)
2070 { 2512 {
2071 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2513 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072 w->pending = 0; 2514 w->pending = 0;
2073 } 2515 }
2074} 2516}
2075 2517
2076int 2518int
… …
2080 int pending = w_->pending; 2522 int pending = w_->pending;
2081 2523
2082 if (expect_true (pending)) 2524 if (expect_true (pending))
2083 { 2525 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2526 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2527 p->w = (W)&pending_w;
2085 w_->pending = 0; 2528 w_->pending = 0;
2086 p->w = 0;
2087 return p->events; 2529 return p->events;
2088 } 2530 }
2089 else 2531 else
2090 return 0; 2532 return 0;
2091} 2533}
2092 2534
2093void inline_size 2535inline_size void
2094pri_adjust (EV_P_ W w) 2536pri_adjust (EV_P_ W w)
2095{ 2537{
2096 int pri = w->priority; 2538 int pri = ev_priority (w);
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2539 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2540 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri; 2541 ev_set_priority (w, pri);
2100} 2542}
2101 2543
2102void inline_speed 2544inline_speed void
2103ev_start (EV_P_ W w, int active) 2545ev_start (EV_P_ W w, int active)
2104{ 2546{
2105 pri_adjust (EV_A_ w); 2547 pri_adjust (EV_A_ w);
2106 w->active = active; 2548 w->active = active;
2107 ev_ref (EV_A); 2549 ev_ref (EV_A);
2108} 2550}
2109 2551
2110void inline_size 2552inline_size void
2111ev_stop (EV_P_ W w) 2553ev_stop (EV_P_ W w)
2112{ 2554{
2113 ev_unref (EV_A); 2555 ev_unref (EV_A);
2114 w->active = 0; 2556 w->active = 0;
2115} 2557}
… …
2122 int fd = w->fd; 2564 int fd = w->fd;
2123 2565
2124 if (expect_false (ev_is_active (w))) 2566 if (expect_false (ev_is_active (w)))
2125 return; 2567 return;
2126 2568
2127 assert (("ev_io_start called with negative fd", fd >= 0)); 2569 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2570 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128 2571
2129 EV_FREQUENT_CHECK; 2572 EV_FREQUENT_CHECK;
2130 2573
2131 ev_start (EV_A_ (W)w, 1); 2574 ev_start (EV_A_ (W)w, 1);
2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133 wlist_add (&anfds[fd].head, (WL)w); 2576 wlist_add (&anfds[fd].head, (WL)w);
2134 2577
2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2578 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136 w->events &= ~EV_IOFDSET; 2579 w->events &= ~EV__IOFDSET;
2137 2580
2138 EV_FREQUENT_CHECK; 2581 EV_FREQUENT_CHECK;
2139} 2582}
2140 2583
2141void noinline 2584void noinline
… …
2143{ 2586{
2144 clear_pending (EV_A_ (W)w); 2587 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2588 if (expect_false (!ev_is_active (w)))
2146 return; 2589 return;
2147 2590
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2591 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149 2592
2150 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2151 2594
2152 wlist_del (&anfds[w->fd].head, (WL)w); 2595 wlist_del (&anfds[w->fd].head, (WL)w);
2153 ev_stop (EV_A_ (W)w); 2596 ev_stop (EV_A_ (W)w);
… …
2163 if (expect_false (ev_is_active (w))) 2606 if (expect_false (ev_is_active (w)))
2164 return; 2607 return;
2165 2608
2166 ev_at (w) += mn_now; 2609 ev_at (w) += mn_now;
2167 2610
2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2611 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169 2612
2170 EV_FREQUENT_CHECK; 2613 EV_FREQUENT_CHECK;
2171 2614
2172 ++timercnt; 2615 ++timercnt;
2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2616 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2176 ANHE_at_cache (timers [ev_active (w)]); 2619 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w)); 2620 upheap (timers, ev_active (w));
2178 2621
2179 EV_FREQUENT_CHECK; 2622 EV_FREQUENT_CHECK;
2180 2623
2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2624 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182} 2625}
2183 2626
2184void noinline 2627void noinline
2185ev_timer_stop (EV_P_ ev_timer *w) 2628ev_timer_stop (EV_P_ ev_timer *w)
2186{ 2629{
… …
2191 EV_FREQUENT_CHECK; 2634 EV_FREQUENT_CHECK;
2192 2635
2193 { 2636 {
2194 int active = ev_active (w); 2637 int active = ev_active (w);
2195 2638
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2639 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197 2640
2198 --timercnt; 2641 --timercnt;
2199 2642
2200 if (expect_true (active < timercnt + HEAP0)) 2643 if (expect_true (active < timercnt + HEAP0))
2201 { 2644 {
2202 timers [active] = timers [timercnt + HEAP0]; 2645 timers [active] = timers [timercnt + HEAP0];
2203 adjustheap (timers, timercnt, active); 2646 adjustheap (timers, timercnt, active);
2204 } 2647 }
2205 } 2648 }
2206 2649
2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now; 2650 ev_at (w) -= mn_now;
2210 2651
2211 ev_stop (EV_A_ (W)w); 2652 ev_stop (EV_A_ (W)w);
2653
2654 EV_FREQUENT_CHECK;
2212} 2655}
2213 2656
2214void noinline 2657void noinline
2215ev_timer_again (EV_P_ ev_timer *w) 2658ev_timer_again (EV_P_ ev_timer *w)
2216{ 2659{
… …
2234 } 2677 }
2235 2678
2236 EV_FREQUENT_CHECK; 2679 EV_FREQUENT_CHECK;
2237} 2680}
2238 2681
2682ev_tstamp
2683ev_timer_remaining (EV_P_ ev_timer *w)
2684{
2685 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2686}
2687
2239#if EV_PERIODIC_ENABLE 2688#if EV_PERIODIC_ENABLE
2240void noinline 2689void noinline
2241ev_periodic_start (EV_P_ ev_periodic *w) 2690ev_periodic_start (EV_P_ ev_periodic *w)
2242{ 2691{
2243 if (expect_false (ev_is_active (w))) 2692 if (expect_false (ev_is_active (w)))
… …
2245 2694
2246 if (w->reschedule_cb) 2695 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval) 2697 else if (w->interval)
2249 { 2698 {
2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251 /* this formula differs from the one in periodic_reify because we do not always round up */ 2700 /* this formula differs from the one in periodic_reify because we do not always round up */
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 } 2702 }
2254 else 2703 else
2255 ev_at (w) = w->offset; 2704 ev_at (w) = w->offset;
… …
2263 ANHE_at_cache (periodics [ev_active (w)]); 2712 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w)); 2713 upheap (periodics, ev_active (w));
2265 2714
2266 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2267 2716
2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2717 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269} 2718}
2270 2719
2271void noinline 2720void noinline
2272ev_periodic_stop (EV_P_ ev_periodic *w) 2721ev_periodic_stop (EV_P_ ev_periodic *w)
2273{ 2722{
… …
2278 EV_FREQUENT_CHECK; 2727 EV_FREQUENT_CHECK;
2279 2728
2280 { 2729 {
2281 int active = ev_active (w); 2730 int active = ev_active (w);
2282 2731
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2732 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284 2733
2285 --periodiccnt; 2734 --periodiccnt;
2286 2735
2287 if (expect_true (active < periodiccnt + HEAP0)) 2736 if (expect_true (active < periodiccnt + HEAP0))
2288 { 2737 {
2289 periodics [active] = periodics [periodiccnt + HEAP0]; 2738 periodics [active] = periodics [periodiccnt + HEAP0];
2290 adjustheap (periodics, periodiccnt, active); 2739 adjustheap (periodics, periodiccnt, active);
2291 } 2740 }
2292 } 2741 }
2293 2742
2294 EV_FREQUENT_CHECK;
2295
2296 ev_stop (EV_A_ (W)w); 2743 ev_stop (EV_A_ (W)w);
2744
2745 EV_FREQUENT_CHECK;
2297} 2746}
2298 2747
2299void noinline 2748void noinline
2300ev_periodic_again (EV_P_ ev_periodic *w) 2749ev_periodic_again (EV_P_ ev_periodic *w)
2301{ 2750{
… …
2307 2756
2308#ifndef SA_RESTART 2757#ifndef SA_RESTART
2309# define SA_RESTART 0 2758# define SA_RESTART 0
2310#endif 2759#endif
2311 2760
2761#if EV_SIGNAL_ENABLE
2762
2312void noinline 2763void noinline
2313ev_signal_start (EV_P_ ev_signal *w) 2764ev_signal_start (EV_P_ ev_signal *w)
2314{ 2765{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
2318 if (expect_false (ev_is_active (w))) 2766 if (expect_false (ev_is_active (w)))
2319 return; 2767 return;
2320 2768
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2769 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2322 2770
2323 evpipe_init (EV_A); 2771#if EV_MULTIPLICITY
2772 assert (("libev: a signal must not be attached to two different loops",
2773 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2324 2774
2325 EV_FREQUENT_CHECK; 2775 signals [w->signum - 1].loop = EV_A;
2776#endif
2326 2777
2778 EV_FREQUENT_CHECK;
2779
2780#if EV_USE_SIGNALFD
2781 if (sigfd == -2)
2327 { 2782 {
2328#ifndef _WIN32 2783 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2329 sigset_t full, prev; 2784 if (sigfd < 0 && errno == EINVAL)
2330 sigfillset (&full); 2785 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333 2786
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2787 if (sigfd >= 0)
2788 {
2789 fd_intern (sigfd); /* doing it twice will not hurt */
2335 2790
2336#ifndef _WIN32 2791 sigemptyset (&sigfd_set);
2337 sigprocmask (SIG_SETMASK, &prev, 0); 2792
2338#endif 2793 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2794 ev_set_priority (&sigfd_w, EV_MAXPRI);
2795 ev_io_start (EV_A_ &sigfd_w);
2796 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2797 }
2339 } 2798 }
2799
2800 if (sigfd >= 0)
2801 {
2802 /* TODO: check .head */
2803 sigaddset (&sigfd_set, w->signum);
2804 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2805
2806 signalfd (sigfd, &sigfd_set, 0);
2807 }
2808#endif
2340 2809
2341 ev_start (EV_A_ (W)w, 1); 2810 ev_start (EV_A_ (W)w, 1);
2342 wlist_add (&signals [w->signum - 1].head, (WL)w); 2811 wlist_add (&signals [w->signum - 1].head, (WL)w);
2343 2812
2344 if (!((WL)w)->next) 2813 if (!((WL)w)->next)
2814# if EV_USE_SIGNALFD
2815 if (sigfd < 0) /*TODO*/
2816# endif
2345 { 2817 {
2346#if _WIN32 2818# ifdef _WIN32
2819 evpipe_init (EV_A);
2820
2347 signal (w->signum, ev_sighandler); 2821 signal (w->signum, ev_sighandler);
2348#else 2822# else
2349 struct sigaction sa; 2823 struct sigaction sa;
2824
2825 evpipe_init (EV_A);
2826
2350 sa.sa_handler = ev_sighandler; 2827 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask); 2828 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0); 2830 sigaction (w->signum, &sa, 0);
2831
2832 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2354#endif 2835#endif
2355 } 2836 }
2356 2837
2357 EV_FREQUENT_CHECK; 2838 EV_FREQUENT_CHECK;
2358} 2839}
2359 2840
2360void noinline 2841void noinline
… …
2368 2849
2369 wlist_del (&signals [w->signum - 1].head, (WL)w); 2850 wlist_del (&signals [w->signum - 1].head, (WL)w);
2370 ev_stop (EV_A_ (W)w); 2851 ev_stop (EV_A_ (W)w);
2371 2852
2372 if (!signals [w->signum - 1].head) 2853 if (!signals [w->signum - 1].head)
2854 {
2855#if EV_MULTIPLICITY
2856 signals [w->signum - 1].loop = 0; /* unattach from signal */
2857#endif
2858#if EV_USE_SIGNALFD
2859 if (sigfd >= 0)
2860 {
2861 sigset_t ss;
2862
2863 sigemptyset (&ss);
2864 sigaddset (&ss, w->signum);
2865 sigdelset (&sigfd_set, w->signum);
2866
2867 signalfd (sigfd, &sigfd_set, 0);
2868 sigprocmask (SIG_UNBLOCK, &ss, 0);
2869 }
2870 else
2871#endif
2373 signal (w->signum, SIG_DFL); 2872 signal (w->signum, SIG_DFL);
2873 }
2374 2874
2375 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2376} 2876}
2877
2878#endif
2879
2880#if EV_CHILD_ENABLE
2377 2881
2378void 2882void
2379ev_child_start (EV_P_ ev_child *w) 2883ev_child_start (EV_P_ ev_child *w)
2380{ 2884{
2381#if EV_MULTIPLICITY 2885#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2886 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif 2887#endif
2384 if (expect_false (ev_is_active (w))) 2888 if (expect_false (ev_is_active (w)))
2385 return; 2889 return;
2386 2890
2387 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2388 2892
2389 ev_start (EV_A_ (W)w, 1); 2893 ev_start (EV_A_ (W)w, 1);
2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2894 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2391 2895
2392 EV_FREQUENT_CHECK; 2896 EV_FREQUENT_CHECK;
2393} 2897}
2394 2898
2395void 2899void
… …
2399 if (expect_false (!ev_is_active (w))) 2903 if (expect_false (!ev_is_active (w)))
2400 return; 2904 return;
2401 2905
2402 EV_FREQUENT_CHECK; 2906 EV_FREQUENT_CHECK;
2403 2907
2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2908 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2405 ev_stop (EV_A_ (W)w); 2909 ev_stop (EV_A_ (W)w);
2406 2910
2407 EV_FREQUENT_CHECK; 2911 EV_FREQUENT_CHECK;
2408} 2912}
2913
2914#endif
2409 2915
2410#if EV_STAT_ENABLE 2916#if EV_STAT_ENABLE
2411 2917
2412# ifdef _WIN32 2918# ifdef _WIN32
2413# undef lstat 2919# undef lstat
2414# define lstat(a,b) _stati64 (a,b) 2920# define lstat(a,b) _stati64 (a,b)
2415# endif 2921# endif
2416 2922
2417#define DEF_STAT_INTERVAL 5.0074891 2923#define DEF_STAT_INTERVAL 5.0074891
2924#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418#define MIN_STAT_INTERVAL 0.1074891 2925#define MIN_STAT_INTERVAL 0.1074891
2419 2926
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2927static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421 2928
2422#if EV_USE_INOTIFY 2929#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192 2930
2931/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2932# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2424 2933
2425static void noinline 2934static void noinline
2426infy_add (EV_P_ ev_stat *w) 2935infy_add (EV_P_ ev_stat *w)
2427{ 2936{
2428 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); 2937 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);
2429 2938
2430 if (w->wd < 0) 2939 if (w->wd >= 0)
2940 {
2941 struct statfs sfs;
2942
2943 /* now local changes will be tracked by inotify, but remote changes won't */
2944 /* unless the filesystem is known to be local, we therefore still poll */
2945 /* also do poll on <2.6.25, but with normal frequency */
2946
2947 if (!fs_2625)
2948 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2949 else if (!statfs (w->path, &sfs)
2950 && (sfs.f_type == 0x1373 /* devfs */
2951 || sfs.f_type == 0xEF53 /* ext2/3 */
2952 || sfs.f_type == 0x3153464a /* jfs */
2953 || sfs.f_type == 0x52654973 /* reiser3 */
2954 || sfs.f_type == 0x01021994 /* tempfs */
2955 || sfs.f_type == 0x58465342 /* xfs */))
2956 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2957 else
2958 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2431 { 2959 }
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2960 else
2961 {
2962 /* can't use inotify, continue to stat */
2963 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2433 2964
2434 /* monitor some parent directory for speedup hints */ 2965 /* if path is not there, monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2966 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2436 /* but an efficiency issue only */ 2967 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2968 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 { 2969 {
2439 char path [4096]; 2970 char path [4096];
2440 strcpy (path, w->path); 2971 strcpy (path, w->path);
… …
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2975 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2976 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446 2977
2447 char *pend = strrchr (path, '/'); 2978 char *pend = strrchr (path, '/');
2448 2979
2449 if (!pend) 2980 if (!pend || pend == path)
2450 break; /* whoops, no '/', complain to your admin */ 2981 break;
2451 2982
2452 *pend = 0; 2983 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask); 2984 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 } 2985 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 } 2987 }
2457 } 2988 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460 2989
2461 if (w->wd >= 0) 2990 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2991 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2992
2993 /* now re-arm timer, if required */
2994 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2995 ev_timer_again (EV_A_ &w->timer);
2996 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2463} 2997}
2464 2998
2465static void noinline 2999static void noinline
2466infy_del (EV_P_ ev_stat *w) 3000infy_del (EV_P_ ev_stat *w)
2467{ 3001{
… …
2470 3004
2471 if (wd < 0) 3005 if (wd < 0)
2472 return; 3006 return;
2473 3007
2474 w->wd = -2; 3008 w->wd = -2;
2475 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3009 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2476 wlist_del (&fs_hash [slot].head, (WL)w); 3010 wlist_del (&fs_hash [slot].head, (WL)w);
2477 3011
2478 /* remove this watcher, if others are watching it, they will rearm */ 3012 /* remove this watcher, if others are watching it, they will rearm */
2479 inotify_rm_watch (fs_fd, wd); 3013 inotify_rm_watch (fs_fd, wd);
2480} 3014}
2481 3015
2482static void noinline 3016static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3017infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{ 3018{
2485 if (slot < 0) 3019 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */ 3020 /* overflow, need to check for all hash slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3021 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2488 infy_wd (EV_A_ slot, wd, ev); 3022 infy_wd (EV_A_ slot, wd, ev);
2489 else 3023 else
2490 { 3024 {
2491 WL w_; 3025 WL w_;
2492 3026
2493 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3027 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2494 { 3028 {
2495 ev_stat *w = (ev_stat *)w_; 3029 ev_stat *w = (ev_stat *)w_;
2496 w_ = w_->next; /* lets us remove this watcher and all before it */ 3030 w_ = w_->next; /* lets us remove this watcher and all before it */
2497 3031
2498 if (w->wd == wd || wd == -1) 3032 if (w->wd == wd || wd == -1)
2499 { 3033 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3034 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 { 3035 {
3036 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2502 w->wd = -1; 3037 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3038 infy_add (EV_A_ w); /* re-add, no matter what */
2504 } 3039 }
2505 3040
2506 stat_timer_cb (EV_A_ &w->timer, 0); 3041 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2511 3046
2512static void 3047static void
2513infy_cb (EV_P_ ev_io *w, int revents) 3048infy_cb (EV_P_ ev_io *w, int revents)
2514{ 3049{
2515 char buf [EV_INOTIFY_BUFSIZE]; 3050 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs; 3051 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf)); 3052 int len = read (fs_fd, buf, sizeof (buf));
2519 3053
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3054 for (ofs = 0; ofs < len; )
3055 {
3056 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3057 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len;
3059 }
2522} 3060}
2523 3061
2524void inline_size 3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void
3095ev_check_2625 (EV_P)
3096{
3097 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */
3100 if (ev_linux_version () < 0x020619)
3101 return;
3102
3103 fs_2625 = 1;
3104}
3105
3106inline_size int
3107infy_newfd (void)
3108{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0)
3112 return fd;
3113#endif
3114 return inotify_init ();
3115}
3116
3117inline_size void
2525infy_init (EV_P) 3118infy_init (EV_P)
2526{ 3119{
2527 if (fs_fd != -2) 3120 if (fs_fd != -2)
2528 return; 3121 return;
2529 3122
3123 fs_fd = -1;
3124
3125 ev_check_2625 (EV_A);
3126
2530 fs_fd = inotify_init (); 3127 fs_fd = infy_newfd ();
2531 3128
2532 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
2533 { 3130 {
3131 fd_intern (fs_fd);
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3132 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI); 3133 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w); 3134 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A);
2537 } 3136 }
2538} 3137}
2539 3138
2540void inline_size 3139inline_size void
2541infy_fork (EV_P) 3140infy_fork (EV_P)
2542{ 3141{
2543 int slot; 3142 int slot;
2544 3143
2545 if (fs_fd < 0) 3144 if (fs_fd < 0)
2546 return; 3145 return;
2547 3146
3147 ev_ref (EV_A);
3148 ev_io_stop (EV_A_ &fs_w);
2548 close (fs_fd); 3149 close (fs_fd);
2549 fs_fd = inotify_init (); 3150 fs_fd = infy_newfd ();
2550 3151
3152 if (fs_fd >= 0)
3153 {
3154 fd_intern (fs_fd);
3155 ev_io_set (&fs_w, fs_fd, EV_READ);
3156 ev_io_start (EV_A_ &fs_w);
3157 ev_unref (EV_A);
3158 }
3159
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3160 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2552 { 3161 {
2553 WL w_ = fs_hash [slot].head; 3162 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0; 3163 fs_hash [slot].head = 0;
2555 3164
2556 while (w_) 3165 while (w_)
… …
2561 w->wd = -1; 3170 w->wd = -1;
2562 3171
2563 if (fs_fd >= 0) 3172 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */ 3173 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else 3174 else
3175 {
3176 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3177 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2566 ev_timer_start (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3180 }
2567 } 3181 }
2568
2569 } 3182 }
2570} 3183}
2571 3184
3185#endif
3186
3187#ifdef _WIN32
3188# define EV_LSTAT(p,b) _stati64 (p, b)
3189#else
3190# define EV_LSTAT(p,b) lstat (p, b)
2572#endif 3191#endif
2573 3192
2574void 3193void
2575ev_stat_stat (EV_P_ ev_stat *w) 3194ev_stat_stat (EV_P_ ev_stat *w)
2576{ 3195{
… …
2583static void noinline 3202static void noinline
2584stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3203stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2585{ 3204{
2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3205 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2587 3206
2588 /* we copy this here each the time so that */ 3207 ev_statdata prev = w->attr;
2589 /* prev has the old value when the callback gets invoked */
2590 w->prev = w->attr;
2591 ev_stat_stat (EV_A_ w); 3208 ev_stat_stat (EV_A_ w);
2592 3209
2593 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3210 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2594 if ( 3211 if (
2595 w->prev.st_dev != w->attr.st_dev 3212 prev.st_dev != w->attr.st_dev
2596 || w->prev.st_ino != w->attr.st_ino 3213 || prev.st_ino != w->attr.st_ino
2597 || w->prev.st_mode != w->attr.st_mode 3214 || prev.st_mode != w->attr.st_mode
2598 || w->prev.st_nlink != w->attr.st_nlink 3215 || prev.st_nlink != w->attr.st_nlink
2599 || w->prev.st_uid != w->attr.st_uid 3216 || prev.st_uid != w->attr.st_uid
2600 || w->prev.st_gid != w->attr.st_gid 3217 || prev.st_gid != w->attr.st_gid
2601 || w->prev.st_rdev != w->attr.st_rdev 3218 || prev.st_rdev != w->attr.st_rdev
2602 || w->prev.st_size != w->attr.st_size 3219 || prev.st_size != w->attr.st_size
2603 || w->prev.st_atime != w->attr.st_atime 3220 || prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime 3221 || prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime 3222 || prev.st_ctime != w->attr.st_ctime
2606 ) { 3223 ) {
3224 /* we only update w->prev on actual differences */
3225 /* in case we test more often than invoke the callback, */
3226 /* to ensure that prev is always different to attr */
3227 w->prev = prev;
3228
2607 #if EV_USE_INOTIFY 3229 #if EV_USE_INOTIFY
3230 if (fs_fd >= 0)
3231 {
2608 infy_del (EV_A_ w); 3232 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w); 3233 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */ 3234 ev_stat_stat (EV_A_ w); /* avoid race... */
3235 }
2611 #endif 3236 #endif
2612 3237
2613 ev_feed_event (EV_A_ w, EV_STAT); 3238 ev_feed_event (EV_A_ w, EV_STAT);
2614 } 3239 }
2615} 3240}
… …
2618ev_stat_start (EV_P_ ev_stat *w) 3243ev_stat_start (EV_P_ ev_stat *w)
2619{ 3244{
2620 if (expect_false (ev_is_active (w))) 3245 if (expect_false (ev_is_active (w)))
2621 return; 3246 return;
2622 3247
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w); 3248 ev_stat_stat (EV_A_ w);
2628 3249
3250 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629 if (w->interval < MIN_STAT_INTERVAL) 3251 w->interval = MIN_STAT_INTERVAL;
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631 3252
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3253 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633 ev_set_priority (&w->timer, ev_priority (w)); 3254 ev_set_priority (&w->timer, ev_priority (w));
2634 3255
2635#if EV_USE_INOTIFY 3256#if EV_USE_INOTIFY
2636 infy_init (EV_A); 3257 infy_init (EV_A);
2637 3258
2638 if (fs_fd >= 0) 3259 if (fs_fd >= 0)
2639 infy_add (EV_A_ w); 3260 infy_add (EV_A_ w);
2640 else 3261 else
2641#endif 3262#endif
3263 {
2642 ev_timer_start (EV_A_ &w->timer); 3264 ev_timer_again (EV_A_ &w->timer);
3265 ev_unref (EV_A);
3266 }
2643 3267
2644 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2645 3269
2646 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2647} 3271}
… …
2656 EV_FREQUENT_CHECK; 3280 EV_FREQUENT_CHECK;
2657 3281
2658#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w); 3283 infy_del (EV_A_ w);
2660#endif 3284#endif
3285
3286 if (ev_is_active (&w->timer))
3287 {
3288 ev_ref (EV_A);
2661 ev_timer_stop (EV_A_ &w->timer); 3289 ev_timer_stop (EV_A_ &w->timer);
3290 }
2662 3291
2663 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2664 3293
2665 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
2666} 3295}
… …
2711 3340
2712 EV_FREQUENT_CHECK; 3341 EV_FREQUENT_CHECK;
2713} 3342}
2714#endif 3343#endif
2715 3344
3345#if EV_PREPARE_ENABLE
2716void 3346void
2717ev_prepare_start (EV_P_ ev_prepare *w) 3347ev_prepare_start (EV_P_ ev_prepare *w)
2718{ 3348{
2719 if (expect_false (ev_is_active (w))) 3349 if (expect_false (ev_is_active (w)))
2720 return; 3350 return;
… …
2746 3376
2747 ev_stop (EV_A_ (W)w); 3377 ev_stop (EV_A_ (W)w);
2748 3378
2749 EV_FREQUENT_CHECK; 3379 EV_FREQUENT_CHECK;
2750} 3380}
3381#endif
2751 3382
3383#if EV_CHECK_ENABLE
2752void 3384void
2753ev_check_start (EV_P_ ev_check *w) 3385ev_check_start (EV_P_ ev_check *w)
2754{ 3386{
2755 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2756 return; 3388 return;
… …
2782 3414
2783 ev_stop (EV_A_ (W)w); 3415 ev_stop (EV_A_ (W)w);
2784 3416
2785 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
2786} 3418}
3419#endif
2787 3420
2788#if EV_EMBED_ENABLE 3421#if EV_EMBED_ENABLE
2789void noinline 3422void noinline
2790ev_embed_sweep (EV_P_ ev_embed *w) 3423ev_embed_sweep (EV_P_ ev_embed *w)
2791{ 3424{
… …
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{ 3441{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3442 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810 3443
2811 { 3444 {
2812 struct ev_loop *loop = w->other; 3445 EV_P = w->other;
2813 3446
2814 while (fdchangecnt) 3447 while (fdchangecnt)
2815 { 3448 {
2816 fd_reify (EV_A); 3449 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3450 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818 } 3451 }
2819 } 3452 }
2820} 3453}
2821 3454
3455static void
3456embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3457{
3458 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3459
3460 ev_embed_stop (EV_A_ w);
3461
3462 {
3463 EV_P = w->other;
3464
3465 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3467 }
3468
3469 ev_embed_start (EV_A_ w);
3470}
3471
2822#if 0 3472#if 0
2823static void 3473static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3474embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825{ 3475{
2826 ev_idle_stop (EV_A_ idle); 3476 ev_idle_stop (EV_A_ idle);
… …
2832{ 3482{
2833 if (expect_false (ev_is_active (w))) 3483 if (expect_false (ev_is_active (w)))
2834 return; 3484 return;
2835 3485
2836 { 3486 {
2837 struct ev_loop *loop = w->other; 3487 EV_P = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3488 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3489 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 } 3490 }
2841 3491
2842 EV_FREQUENT_CHECK; 3492 EV_FREQUENT_CHECK;
2843 3493
… …
2846 3496
2847 ev_prepare_init (&w->prepare, embed_prepare_cb); 3497 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI); 3498 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare); 3499 ev_prepare_start (EV_A_ &w->prepare);
2850 3500
3501 ev_fork_init (&w->fork, embed_fork_cb);
3502 ev_fork_start (EV_A_ &w->fork);
3503
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3504 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852 3505
2853 ev_start (EV_A_ (W)w, 1); 3506 ev_start (EV_A_ (W)w, 1);
2854 3507
2855 EV_FREQUENT_CHECK; 3508 EV_FREQUENT_CHECK;
… …
2862 if (expect_false (!ev_is_active (w))) 3515 if (expect_false (!ev_is_active (w)))
2863 return; 3516 return;
2864 3517
2865 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2866 3519
2867 ev_io_stop (EV_A_ &w->io); 3520 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare); 3521 ev_prepare_stop (EV_A_ &w->prepare);
3522 ev_fork_stop (EV_A_ &w->fork);
2869 3523
2870 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2871 3525
2872 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2873} 3527}
… …
2952 3606
2953void 3607void
2954ev_async_send (EV_P_ ev_async *w) 3608ev_async_send (EV_P_ ev_async *w)
2955{ 3609{
2956 w->sent = 1; 3610 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync); 3611 evpipe_write (EV_A_ &async_pending);
2958} 3612}
2959#endif 3613#endif
2960 3614
2961/*****************************************************************************/ 3615/*****************************************************************************/
2962 3616
… …
2972once_cb (EV_P_ struct ev_once *once, int revents) 3626once_cb (EV_P_ struct ev_once *once, int revents)
2973{ 3627{
2974 void (*cb)(int revents, void *arg) = once->cb; 3628 void (*cb)(int revents, void *arg) = once->cb;
2975 void *arg = once->arg; 3629 void *arg = once->arg;
2976 3630
2977 ev_io_stop (EV_A_ &once->io); 3631 ev_io_stop (EV_A_ &once->io);
2978 ev_timer_stop (EV_A_ &once->to); 3632 ev_timer_stop (EV_A_ &once->to);
2979 ev_free (once); 3633 ev_free (once);
2980 3634
2981 cb (revents, arg); 3635 cb (revents, arg);
2982} 3636}
2983 3637
2984static void 3638static void
2985once_cb_io (EV_P_ ev_io *w, int revents) 3639once_cb_io (EV_P_ ev_io *w, int revents)
2986{ 3640{
2987 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3641 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3642
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988} 3644}
2989 3645
2990static void 3646static void
2991once_cb_to (EV_P_ ev_timer *w, int revents) 3647once_cb_to (EV_P_ ev_timer *w, int revents)
2992{ 3648{
2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3649 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3650
3651 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994} 3652}
2995 3653
2996void 3654void
2997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3655ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998{ 3656{
2999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3657 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3000 3658
3001 if (expect_false (!once)) 3659 if (expect_false (!once))
3002 { 3660 {
3003 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3661 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3004 return; 3662 return;
3005 } 3663 }
3006 3664
3007 once->cb = cb; 3665 once->cb = cb;
3008 once->arg = arg; 3666 once->arg = arg;
… …
3020 ev_timer_set (&once->to, timeout, 0.); 3678 ev_timer_set (&once->to, timeout, 0.);
3021 ev_timer_start (EV_A_ &once->to); 3679 ev_timer_start (EV_A_ &once->to);
3022 } 3680 }
3023} 3681}
3024 3682
3683/*****************************************************************************/
3684
3685#if EV_WALK_ENABLE
3686void
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3688{
3689 int i, j;
3690 ev_watcher_list *wl, *wn;
3691
3692 if (types & (EV_IO | EV_EMBED))
3693 for (i = 0; i < anfdmax; ++i)
3694 for (wl = anfds [i].head; wl; )
3695 {
3696 wn = wl->next;
3697
3698#if EV_EMBED_ENABLE
3699 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3700 {
3701 if (types & EV_EMBED)
3702 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3703 }
3704 else
3705#endif
3706#if EV_USE_INOTIFY
3707 if (ev_cb ((ev_io *)wl) == infy_cb)
3708 ;
3709 else
3710#endif
3711 if ((ev_io *)wl != &pipe_w)
3712 if (types & EV_IO)
3713 cb (EV_A_ EV_IO, wl);
3714
3715 wl = wn;
3716 }
3717
3718 if (types & (EV_TIMER | EV_STAT))
3719 for (i = timercnt + HEAP0; i-- > HEAP0; )
3720#if EV_STAT_ENABLE
3721 /*TODO: timer is not always active*/
3722 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3723 {
3724 if (types & EV_STAT)
3725 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3726 }
3727 else
3728#endif
3729 if (types & EV_TIMER)
3730 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3731
3732#if EV_PERIODIC_ENABLE
3733 if (types & EV_PERIODIC)
3734 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif
3737
3738#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; )
3741 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif
3744
3745#if EV_FORK_ENABLE
3746 if (types & EV_FORK)
3747 for (i = forkcnt; i--; )
3748 if (ev_cb (forks [i]) != embed_fork_cb)
3749 cb (EV_A_ EV_FORK, forks [i]);
3750#endif
3751
3752#if EV_ASYNC_ENABLE
3753 if (types & EV_ASYNC)
3754 for (i = asynccnt; i--; )
3755 cb (EV_A_ EV_ASYNC, asyncs [i]);
3756#endif
3757
3758#if EV_PREPARE_ENABLE
3759 if (types & EV_PREPARE)
3760 for (i = preparecnt; i--; )
3761# if EV_EMBED_ENABLE
3762 if (ev_cb (prepares [i]) != embed_prepare_cb)
3763# endif
3764 cb (EV_A_ EV_PREPARE, prepares [i]);
3765#endif
3766
3767#if EV_CHECK_ENABLE
3768 if (types & EV_CHECK)
3769 for (i = checkcnt; i--; )
3770 cb (EV_A_ EV_CHECK, checks [i]);
3771#endif
3772
3773#if EV_SIGNAL_ENABLE
3774 if (types & EV_SIGNAL)
3775 for (i = 0; i < EV_NSIG - 1; ++i)
3776 for (wl = signals [i].head; wl; )
3777 {
3778 wn = wl->next;
3779 cb (EV_A_ EV_SIGNAL, wl);
3780 wl = wn;
3781 }
3782#endif
3783
3784#if EV_CHILD_ENABLE
3785 if (types & EV_CHILD)
3786 for (i = (EV_PID_HASHSIZE); i--; )
3787 for (wl = childs [i]; wl; )
3788 {
3789 wn = wl->next;
3790 cb (EV_A_ EV_CHILD, wl);
3791 wl = wn;
3792 }
3793#endif
3794/* EV_STAT 0x00001000 /* stat data changed */
3795/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3796}
3797#endif
3798
3025#if EV_MULTIPLICITY 3799#if EV_MULTIPLICITY
3026 #include "ev_wrap.h" 3800 #include "ev_wrap.h"
3027#endif 3801#endif
3028 3802
3029#ifdef __cplusplus 3803#ifdef __cplusplus

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