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Comparing libev/ev.c (file contents):
Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC vs.
Revision 1.346 by root, Thu Oct 14 05:07:04 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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 *
… …
57# endif 57# endif
58# ifndef EV_USE_MONOTONIC 58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 59# define EV_USE_MONOTONIC 1
60# endif 60# endif
61# endif 61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
62# endif 64# endif
63 65
64# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
77# endif 79# endif
78# endif 80# endif
79 81
82# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
83# else 86# else
87# undef EV_USE_NANOSLEEP
84# 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
85# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
86# endif 98# endif
87 99
100# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 103# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 104# else
105# undef EV_USE_POLL
100# define EV_USE_POLL 0 106# define EV_USE_POLL 0
101# endif
102# endif 107# endif
103 108
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
107# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
110# endif 116# endif
111 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
118# endif 125# endif
119 126
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
123# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
126# endif 134# endif
127 135
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
134# endif 143# endif
135 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 161# endif
143 162
144#endif 163#endif
145 164
146#include <math.h> 165#include <math.h>
147#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
148#include <fcntl.h> 168#include <fcntl.h>
149#include <stddef.h> 169#include <stddef.h>
150 170
151#include <stdio.h> 171#include <stdio.h>
152 172
153#include <assert.h> 173#include <assert.h>
154#include <errno.h> 174#include <errno.h>
155#include <sys/types.h> 175#include <sys/types.h>
156#include <time.h> 176#include <time.h>
177#include <limits.h>
157 178
158#include <signal.h> 179#include <signal.h>
159 180
160#ifdef EV_H 181#ifdef EV_H
161# include EV_H 182# include EV_H
… …
172# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 194# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
176# endif 197# endif
198# undef EV_AVOID_STDIO
177#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
178 208
179/* 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
180 238
181#ifndef EV_USE_CLOCK_SYSCALL 239#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 240# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 242# else
185# define EV_USE_CLOCK_SYSCALL 0 243# define EV_USE_CLOCK_SYSCALL 0
186# endif 244# endif
187#endif 245#endif
188 246
189#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 250# else
193# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
194# endif 252# endif
195#endif 253#endif
196 254
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 257#endif
200 258
201#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 262# else
205# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
206# endif 264# endif
207#endif 265#endif
208 266
209#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 269#endif
212 270
213#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
214# ifdef _WIN32 272# ifdef _WIN32
215# define EV_USE_POLL 0 273# define EV_USE_POLL 0
216# else 274# else
217# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 276# endif
219#endif 277#endif
220 278
221#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 282# else
225# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
226# endif 284# endif
227#endif 285#endif
228 286
… …
234# define EV_USE_PORT 0 292# define EV_USE_PORT 0
235#endif 293#endif
236 294
237#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 298# else
241# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
242# endif 300# endif
243#endif 301#endif
244 302
245#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 305#endif
252 306
253#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 309#endif
260 310
261#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 314# else
265# 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
266# endif 324# endif
267#endif 325#endif
268 326
269#if 0 /* debugging */ 327#if 0 /* debugging */
270# define EV_VERIFY 3 328# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
273#endif 331#endif
274 332
275#ifndef EV_VERIFY 333#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 335#endif
278 336
279#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 339#endif
282 340
283#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
284# 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
285#endif 357#endif
286 358
287/* 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
288 366
289#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
292#endif 370#endif
… …
320 398
321#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 400# include <winsock.h>
323#endif 401#endif
324 402
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
335/* 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 */
336# 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
337# ifdef __cplusplus 416# ifdef __cplusplus
338extern "C" { 417extern "C" {
339# endif 418# endif
340int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
341# ifdef __cplusplus 420# ifdef __cplusplus
342} 421}
343# endif 422# endif
344#endif 423#endif
345 424
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
346/**/ 454/**/
347 455
348#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 458#else
351# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
352#endif 460#endif
353 461
354/* 462/*
… …
361 */ 469 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363 471
364#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) */
365#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) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 474
368#if __GNUC__ >= 4 475#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 476# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 477# define noinline __attribute__ ((noinline))
371#else 478#else
… …
378 485
379#define expect_false(expr) expect ((expr) != 0, 0) 486#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 487#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 488#define inline_size static inline
382 489
383#if EV_MINIMAL 490#if EV_FEATURE_CODE
491# define inline_speed static inline
492#else
384# 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)
385#else 500#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif
391 503
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 504#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 505#define EMPTY2(a,b) /* used to suppress some warnings */
394 506
395typedef ev_watcher *W; 507typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 511#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 512#define ev_at(w) ((WT)(w))->at
401 513
402#if EV_USE_REALTIME 514#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 515/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 516/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 518#endif
407 519
408#if EV_USE_MONOTONIC 520#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 522#endif
411 523
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)
532#endif
533
412#ifdef _WIN32 534#ifdef _WIN32
413# include "ev_win32.c" 535# include "ev_win32.c"
414#endif 536#endif
415 537
416/*****************************************************************************/ 538/*****************************************************************************/
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
417 547
418static void (*syserr_cb)(const char *msg); 548static void (*syserr_cb)(const char *msg);
419 549
420void 550void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 551ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 561
432 if (syserr_cb) 562 if (syserr_cb)
433 syserr_cb (msg); 563 syserr_cb (msg);
434 else 564 else
435 { 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
436 perror (msg); 574 perror (msg);
575#endif
437 abort (); 576 abort ();
438 } 577 }
439} 578}
440 579
441static void * 580static void *
442ev_realloc_emul (void *ptr, long size) 581ev_realloc_emul (void *ptr, long size)
443{ 582{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
444 /* some systems, notably openbsd and darwin, fail to properly 586 /* some systems, notably openbsd and darwin, fail to properly
445 * 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
446 * the single unix specification, so work around them here. 588 * the single unix specification, so work around them here.
447 */ 589 */
448 590
449 if (size) 591 if (size)
450 return realloc (ptr, size); 592 return realloc (ptr, size);
451 593
452 free (ptr); 594 free (ptr);
453 return 0; 595 return 0;
596#endif
454} 597}
455 598
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 600
458void 601void
… …
466{ 609{
467 ptr = alloc (ptr, size); 610 ptr = alloc (ptr, size);
468 611
469 if (!ptr && size) 612 if (!ptr && size)
470 { 613 {
614#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n");
616#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
618#endif
472 abort (); 619 abort ();
473 } 620 }
474 621
475 return ptr; 622 return ptr;
476} 623}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 625#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 626#define ev_free(ptr) ev_realloc ((ptr), 0)
480 627
481/*****************************************************************************/ 628/*****************************************************************************/
482 629
630/* set in reify when reification needed */
631#define EV_ANFD_REIFY 1
632
633/* file descriptor info structure */
483typedef struct 634typedef struct
484{ 635{
485 WL head; 636 WL head;
486 unsigned char events; 637 unsigned char events; /* the events watched for */
487 unsigned char reify; 638 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 640 unsigned char unused;
490#if EV_USE_EPOLL 641#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 642 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 643#endif
493#if EV_SELECT_IS_WINSOCKET 644#if EV_SELECT_IS_WINSOCKET
494 SOCKET handle; 645 SOCKET handle;
495#endif 646#endif
496} ANFD; 647} ANFD;
497 648
649/* stores the pending event set for a given watcher */
498typedef struct 650typedef struct
499{ 651{
500 W w; 652 W w;
501 int events; 653 int events; /* the pending event set for the given watcher */
502} ANPENDING; 654} ANPENDING;
503 655
504#if EV_USE_INOTIFY 656#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 657/* hash table entry per inotify-id */
506typedef struct 658typedef struct
… …
509} ANFS; 661} ANFS;
510#endif 662#endif
511 663
512/* Heap Entry */ 664/* Heap Entry */
513#if EV_HEAP_CACHE_AT 665#if EV_HEAP_CACHE_AT
666 /* a heap element */
514 typedef struct { 667 typedef struct {
515 ev_tstamp at; 668 ev_tstamp at;
516 WT w; 669 WT w;
517 } ANHE; 670 } ANHE;
518 671
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 672 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 673 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #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 */
522#else 675#else
676 /* a heap element */
523 typedef WT ANHE; 677 typedef WT ANHE;
524 678
525 #define ANHE_w(he) (he) 679 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 680 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 681 #define ANHE_at_cache(he)
… …
551 705
552 static int ev_default_loop_ptr; 706 static int ev_default_loop_ptr;
553 707
554#endif 708#endif
555 709
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
556/*****************************************************************************/ 722/*****************************************************************************/
557 723
724#ifndef EV_HAVE_EV_TIME
558ev_tstamp 725ev_tstamp
559ev_time (void) 726ev_time (void)
560{ 727{
561#if EV_USE_REALTIME 728#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 729 if (expect_true (have_realtime))
… …
569 736
570 struct timeval tv; 737 struct timeval tv;
571 gettimeofday (&tv, 0); 738 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 739 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 740}
741#endif
574 742
575ev_tstamp inline_size 743inline_size ev_tstamp
576get_clock (void) 744get_clock (void)
577{ 745{
578#if EV_USE_MONOTONIC 746#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 747 if (expect_true (have_monotonic))
580 { 748 {
… …
614 782
615 tv.tv_sec = (time_t)delay; 783 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617 785
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 787 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 788 /* by older ones */
621 select (0, 0, 0, 0, &tv); 789 select (0, 0, 0, 0, &tv);
622#endif 790#endif
623 } 791 }
624} 792}
625 793
626/*****************************************************************************/ 794/*****************************************************************************/
627 795
628#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 */
629 797
630int 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
631array_nextsize (int elem, int cur, int cnt) 801array_nextsize (int elem, int cur, int cnt)
632{ 802{
633 int ncur = cur + 1; 803 int ncur = cur + 1;
634 804
635 do 805 do
… …
676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 846 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
677 } 847 }
678#endif 848#endif
679 849
680#define array_free(stem, idx) \ 850#define array_free(stem, idx) \
681 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
682 852
683/*****************************************************************************/ 853/*****************************************************************************/
854
855/* dummy callback for pending events */
856static void noinline
857pendingcb (EV_P_ ev_prepare *w, int revents)
858{
859}
684 860
685void noinline 861void noinline
686ev_feed_event (EV_P_ void *w, int revents) 862ev_feed_event (EV_P_ void *w, int revents)
687{ 863{
688 W w_ = (W)w; 864 W w_ = (W)w;
… …
697 pendings [pri][w_->pending - 1].w = w_; 873 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 874 pendings [pri][w_->pending - 1].events = revents;
699 } 875 }
700} 876}
701 877
702void 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
703queue_events (EV_P_ W *events, int eventcnt, int type) 894queue_events (EV_P_ W *events, int eventcnt, int type)
704{ 895{
705 int i; 896 int i;
706 897
707 for (i = 0; i < eventcnt; ++i) 898 for (i = 0; i < eventcnt; ++i)
708 ev_feed_event (EV_A_ events [i], type); 899 ev_feed_event (EV_A_ events [i], type);
709} 900}
710 901
711/*****************************************************************************/ 902/*****************************************************************************/
712 903
713void inline_speed 904inline_speed void
714fd_event (EV_P_ int fd, int revents) 905fd_event_nocheck (EV_P_ int fd, int revents)
715{ 906{
716 ANFD *anfd = anfds + fd; 907 ANFD *anfd = anfds + fd;
717 ev_io *w; 908 ev_io *w;
718 909
719 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)
… …
723 if (ev) 914 if (ev)
724 ev_feed_event (EV_A_ (W)w, ev); 915 ev_feed_event (EV_A_ (W)w, ev);
725 } 916 }
726} 917}
727 918
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
728void 930void
729ev_feed_fd_event (EV_P_ int fd, int revents) 931ev_feed_fd_event (EV_P_ int fd, int revents)
730{ 932{
731 if (fd >= 0 && fd < anfdmax) 933 if (fd >= 0 && fd < anfdmax)
732 fd_event (EV_A_ fd, revents); 934 fd_event_nocheck (EV_A_ fd, revents);
733} 935}
734 936
735void inline_size 937/* make sure the external fd watch events are in-sync */
938/* with the kernel/libev internal state */
939inline_size void
736fd_reify (EV_P) 940fd_reify (EV_P)
737{ 941{
738 int i; 942 int i;
739 943
740 for (i = 0; i < fdchangecnt; ++i) 944 for (i = 0; i < fdchangecnt; ++i)
… …
750 954
751#if EV_SELECT_IS_WINSOCKET 955#if EV_SELECT_IS_WINSOCKET
752 if (events) 956 if (events)
753 { 957 {
754 unsigned long arg; 958 unsigned long arg;
755 #ifdef EV_FD_TO_WIN32_HANDLE
756 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
757 #else
758 anfd->handle = _get_osfhandle (fd);
759 #endif
760 assert (("libev: only socket fds supported 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));
761 } 961 }
762#endif 962#endif
763 963
764 { 964 {
… …
766 unsigned char o_reify = anfd->reify; 966 unsigned char o_reify = anfd->reify;
767 967
768 anfd->reify = 0; 968 anfd->reify = 0;
769 anfd->events = events; 969 anfd->events = events;
770 970
771 if (o_events != events || o_reify & EV_IOFDSET) 971 if (o_events != events || o_reify & EV__IOFDSET)
772 backend_modify (EV_A_ fd, o_events, events); 972 backend_modify (EV_A_ fd, o_events, events);
773 } 973 }
774 } 974 }
775 975
776 fdchangecnt = 0; 976 fdchangecnt = 0;
777} 977}
778 978
779void inline_size 979/* something about the given fd changed */
980inline_size void
780fd_change (EV_P_ int fd, int flags) 981fd_change (EV_P_ int fd, int flags)
781{ 982{
782 unsigned char reify = anfds [fd].reify; 983 unsigned char reify = anfds [fd].reify;
783 anfds [fd].reify |= flags; 984 anfds [fd].reify |= flags;
784 985
… …
788 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789 fdchanges [fdchangecnt - 1] = fd; 990 fdchanges [fdchangecnt - 1] = fd;
790 } 991 }
791} 992}
792 993
793void inline_speed 994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void
794fd_kill (EV_P_ int fd) 996fd_kill (EV_P_ int fd)
795{ 997{
796 ev_io *w; 998 ev_io *w;
797 999
798 while ((w = (ev_io *)anfds [fd].head)) 1000 while ((w = (ev_io *)anfds [fd].head))
… …
800 ev_io_stop (EV_A_ w); 1002 ev_io_stop (EV_A_ w);
801 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);
802 } 1004 }
803} 1005}
804 1006
805int inline_size 1007/* check whether the given fd is actually valid, for error recovery */
1008inline_size int
806fd_valid (int fd) 1009fd_valid (int fd)
807{ 1010{
808#ifdef _WIN32 1011#ifdef _WIN32
809 return _get_osfhandle (fd) != -1; 1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
810#else 1013#else
811 return fcntl (fd, F_GETFD) != -1; 1014 return fcntl (fd, F_GETFD) != -1;
812#endif 1015#endif
813} 1016}
814 1017
… …
832 1035
833 for (fd = anfdmax; fd--; ) 1036 for (fd = anfdmax; fd--; )
834 if (anfds [fd].events) 1037 if (anfds [fd].events)
835 { 1038 {
836 fd_kill (EV_A_ fd); 1039 fd_kill (EV_A_ fd);
837 return; 1040 break;
838 } 1041 }
839} 1042}
840 1043
841/* 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 */
842static void noinline 1045static void noinline
… …
847 for (fd = 0; fd < anfdmax; ++fd) 1050 for (fd = 0; fd < anfdmax; ++fd)
848 if (anfds [fd].events) 1051 if (anfds [fd].events)
849 { 1052 {
850 anfds [fd].events = 0; 1053 anfds [fd].events = 0;
851 anfds [fd].emask = 0; 1054 anfds [fd].emask = 0;
852 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1055 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853 } 1056 }
854} 1057}
855 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
856/*****************************************************************************/ 1073/*****************************************************************************/
857 1074
858/* 1075/*
859 * 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
860 * 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
861 * the branching factor of the d-tree. 1078 * the branching factor of the d-tree.
862 */ 1079 */
863 1080
864/* 1081/*
… …
873#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1090#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1091#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875#define UPHEAP_DONE(p,k) ((p) == (k)) 1092#define UPHEAP_DONE(p,k) ((p) == (k))
876 1093
877/* away from the root */ 1094/* away from the root */
878void inline_speed 1095inline_speed void
879downheap (ANHE *heap, int N, int k) 1096downheap (ANHE *heap, int N, int k)
880{ 1097{
881 ANHE he = heap [k]; 1098 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0; 1099 ANHE *E = heap + N + HEAP0;
883 1100
… …
923#define HEAP0 1 1140#define HEAP0 1
924#define HPARENT(k) ((k) >> 1) 1141#define HPARENT(k) ((k) >> 1)
925#define UPHEAP_DONE(p,k) (!(p)) 1142#define UPHEAP_DONE(p,k) (!(p))
926 1143
927/* away from the root */ 1144/* away from the root */
928void inline_speed 1145inline_speed void
929downheap (ANHE *heap, int N, int k) 1146downheap (ANHE *heap, int N, int k)
930{ 1147{
931 ANHE he = heap [k]; 1148 ANHE he = heap [k];
932 1149
933 for (;;) 1150 for (;;)
934 { 1151 {
935 int c = k << 1; 1152 int c = k << 1;
936 1153
937 if (c > N + HEAP0 - 1) 1154 if (c >= N + HEAP0)
938 break; 1155 break;
939 1156
940 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])
941 ? 1 : 0; 1158 ? 1 : 0;
942 1159
… …
953 ev_active (ANHE_w (he)) = k; 1170 ev_active (ANHE_w (he)) = k;
954} 1171}
955#endif 1172#endif
956 1173
957/* towards the root */ 1174/* towards the root */
958void inline_speed 1175inline_speed void
959upheap (ANHE *heap, int k) 1176upheap (ANHE *heap, int k)
960{ 1177{
961 ANHE he = heap [k]; 1178 ANHE he = heap [k];
962 1179
963 for (;;) 1180 for (;;)
… …
974 1191
975 heap [k] = he; 1192 heap [k] = he;
976 ev_active (ANHE_w (he)) = k; 1193 ev_active (ANHE_w (he)) = k;
977} 1194}
978 1195
979void inline_size 1196/* move an element suitably so it is in a correct place */
1197inline_size void
980adjustheap (ANHE *heap, int N, int k) 1198adjustheap (ANHE *heap, int N, int k)
981{ 1199{
982 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)]))
983 upheap (heap, k); 1201 upheap (heap, k);
984 else 1202 else
985 downheap (heap, N, k); 1203 downheap (heap, N, k);
986} 1204}
987 1205
988/* 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 */
989void inline_size 1207inline_size void
990reheap (ANHE *heap, int N) 1208reheap (ANHE *heap, int N)
991{ 1209{
992 int i; 1210 int i;
993 1211
994 /* 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 */
… …
997 upheap (heap, i + HEAP0); 1215 upheap (heap, i + HEAP0);
998} 1216}
999 1217
1000/*****************************************************************************/ 1218/*****************************************************************************/
1001 1219
1220/* associate signal watchers to a signal signal */
1002typedef struct 1221typedef struct
1003{ 1222{
1223 EV_ATOMIC_T pending;
1224#if EV_MULTIPLICITY
1225 EV_P;
1226#endif
1004 WL head; 1227 WL head;
1005 EV_ATOMIC_T gotsig;
1006} ANSIG; 1228} ANSIG;
1007 1229
1008static ANSIG *signals; 1230static ANSIG signals [EV_NSIG - 1];
1009static int signalmax;
1010
1011static EV_ATOMIC_T gotsig;
1012 1231
1013/*****************************************************************************/ 1232/*****************************************************************************/
1014 1233
1015void inline_speed 1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1016fd_intern (int fd)
1017{
1018#ifdef _WIN32
1019 unsigned long arg = 1;
1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1021#else
1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
1023 fcntl (fd, F_SETFL, O_NONBLOCK);
1024#endif
1025}
1026 1235
1027static void noinline 1236static void noinline
1028evpipe_init (EV_P) 1237evpipe_init (EV_P)
1029{ 1238{
1030 if (!ev_is_active (&pipeev)) 1239 if (!ev_is_active (&pipe_w))
1031 { 1240 {
1032#if EV_USE_EVENTFD 1241# if EV_USE_EVENTFD
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL)
1033 if ((evfd = eventfd (0, 0)) >= 0) 1244 evfd = eventfd (0, 0);
1245
1246 if (evfd >= 0)
1034 { 1247 {
1035 evpipe [0] = -1; 1248 evpipe [0] = -1;
1036 fd_intern (evfd); 1249 fd_intern (evfd); /* doing it twice doesn't hurt */
1037 ev_io_set (&pipeev, evfd, EV_READ); 1250 ev_io_set (&pipe_w, evfd, EV_READ);
1038 } 1251 }
1039 else 1252 else
1040#endif 1253# endif
1041 { 1254 {
1042 while (pipe (evpipe)) 1255 while (pipe (evpipe))
1043 ev_syserr ("(libev) error creating signal/async pipe"); 1256 ev_syserr ("(libev) error creating signal/async pipe");
1044 1257
1045 fd_intern (evpipe [0]); 1258 fd_intern (evpipe [0]);
1046 fd_intern (evpipe [1]); 1259 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ); 1260 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048 } 1261 }
1049 1262
1050 ev_io_start (EV_A_ &pipeev); 1263 ev_io_start (EV_A_ &pipe_w);
1051 ev_unref (EV_A); /* watcher should not keep loop alive */ 1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1052 } 1265 }
1053} 1266}
1054 1267
1055void inline_size 1268inline_size void
1056evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057{ 1270{
1058 if (!*flag) 1271 if (!*flag)
1059 { 1272 {
1060 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;
1061 1275
1062 *flag = 1; 1276 *flag = 1;
1063 1277
1064#if EV_USE_EVENTFD 1278#if EV_USE_EVENTFD
1065 if (evfd >= 0) 1279 if (evfd >= 0)
… …
1067 uint64_t counter = 1; 1281 uint64_t counter = 1;
1068 write (evfd, &counter, sizeof (uint64_t)); 1282 write (evfd, &counter, sizeof (uint64_t));
1069 } 1283 }
1070 else 1284 else
1071#endif 1285#endif
1286 /* win32 people keep sending patches that change this write() to send() */
1287 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1288 /* so when you think this write should be a send instead, please find out */
1289 /* where your send() is from - it's definitely not the microsoft send, and */
1290 /* tell me. thank you. */
1072 write (evpipe [1], &old_errno, 1); 1291 write (evpipe [1], &dummy, 1);
1073 1292
1074 errno = old_errno; 1293 errno = old_errno;
1075 } 1294 }
1076} 1295}
1077 1296
1297/* called whenever the libev signal pipe */
1298/* got some events (signal, async) */
1078static void 1299static void
1079pipecb (EV_P_ ev_io *iow, int revents) 1300pipecb (EV_P_ ev_io *iow, int revents)
1080{ 1301{
1302 int i;
1303
1081#if EV_USE_EVENTFD 1304#if EV_USE_EVENTFD
1082 if (evfd >= 0) 1305 if (evfd >= 0)
1083 { 1306 {
1084 uint64_t counter; 1307 uint64_t counter;
1085 read (evfd, &counter, sizeof (uint64_t)); 1308 read (evfd, &counter, sizeof (uint64_t));
1086 } 1309 }
1087 else 1310 else
1088#endif 1311#endif
1089 { 1312 {
1090 char dummy; 1313 char dummy;
1314 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1091 read (evpipe [0], &dummy, 1); 1315 read (evpipe [0], &dummy, 1);
1092 } 1316 }
1093 1317
1094 if (gotsig && ev_is_default_loop (EV_A)) 1318 if (sig_pending)
1095 { 1319 {
1096 int signum; 1320 sig_pending = 0;
1097 gotsig = 0;
1098 1321
1099 for (signum = signalmax; signum--; ) 1322 for (i = EV_NSIG - 1; i--; )
1100 if (signals [signum].gotsig) 1323 if (expect_false (signals [i].pending))
1101 ev_feed_signal_event (EV_A_ signum + 1); 1324 ev_feed_signal_event (EV_A_ i + 1);
1102 } 1325 }
1103 1326
1104#if EV_ASYNC_ENABLE 1327#if EV_ASYNC_ENABLE
1105 if (gotasync) 1328 if (async_pending)
1106 { 1329 {
1107 int i; 1330 async_pending = 0;
1108 gotasync = 0;
1109 1331
1110 for (i = asynccnt; i--; ) 1332 for (i = asynccnt; i--; )
1111 if (asyncs [i]->sent) 1333 if (asyncs [i]->sent)
1112 { 1334 {
1113 asyncs [i]->sent = 0; 1335 asyncs [i]->sent = 0;
… …
1121 1343
1122static void 1344static void
1123ev_sighandler (int signum) 1345ev_sighandler (int signum)
1124{ 1346{
1125#if EV_MULTIPLICITY 1347#if EV_MULTIPLICITY
1126 struct ev_loop *loop = &default_loop_struct; 1348 EV_P = signals [signum - 1].loop;
1127#endif 1349#endif
1128 1350
1129#if _WIN32 1351#ifdef _WIN32
1130 signal (signum, ev_sighandler); 1352 signal (signum, ev_sighandler);
1131#endif 1353#endif
1132 1354
1133 signals [signum - 1].gotsig = 1; 1355 signals [signum - 1].pending = 1;
1134 evpipe_write (EV_A_ &gotsig); 1356 evpipe_write (EV_A_ &sig_pending);
1135} 1357}
1136 1358
1137void noinline 1359void noinline
1138ev_feed_signal_event (EV_P_ int signum) 1360ev_feed_signal_event (EV_P_ int signum)
1139{ 1361{
1140 WL w; 1362 WL w;
1141 1363
1364 if (expect_false (signum <= 0 || signum > EV_NSIG))
1365 return;
1366
1367 --signum;
1368
1142#if EV_MULTIPLICITY 1369#if EV_MULTIPLICITY
1143 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1370 /* it is permissible to try to feed a signal to the wrong loop */
1144#endif 1371 /* or, likely more useful, feeding a signal nobody is waiting for */
1145 1372
1146 --signum; 1373 if (expect_false (signals [signum].loop != EV_A))
1147
1148 if (signum < 0 || signum >= signalmax)
1149 return; 1374 return;
1375#endif
1150 1376
1151 signals [signum].gotsig = 0; 1377 signals [signum].pending = 0;
1152 1378
1153 for (w = signals [signum].head; w; w = w->next) 1379 for (w = signals [signum].head; w; w = w->next)
1154 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1380 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155} 1381}
1156 1382
1383#if EV_USE_SIGNALFD
1384static void
1385sigfdcb (EV_P_ ev_io *iow, int revents)
1386{
1387 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1388
1389 for (;;)
1390 {
1391 ssize_t res = read (sigfd, si, sizeof (si));
1392
1393 /* not ISO-C, as res might be -1, but works with SuS */
1394 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1395 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1396
1397 if (res < (ssize_t)sizeof (si))
1398 break;
1399 }
1400}
1401#endif
1402
1403#endif
1404
1157/*****************************************************************************/ 1405/*****************************************************************************/
1158 1406
1407#if EV_CHILD_ENABLE
1159static WL childs [EV_PID_HASHSIZE]; 1408static WL childs [EV_PID_HASHSIZE];
1160
1161#ifndef _WIN32
1162 1409
1163static ev_signal childev; 1410static ev_signal childev;
1164 1411
1165#ifndef WIFCONTINUED 1412#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0 1413# define WIFCONTINUED(status) 0
1167#endif 1414#endif
1168 1415
1169void inline_speed 1416/* handle a single child status event */
1417inline_speed void
1170child_reap (EV_P_ int chain, int pid, int status) 1418child_reap (EV_P_ int chain, int pid, int status)
1171{ 1419{
1172 ev_child *w; 1420 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1421 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174 1422
1175 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1423 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1176 { 1424 {
1177 if ((w->pid == pid || !w->pid) 1425 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1))) 1426 && (!traced || (w->flags & 1)))
1179 { 1427 {
1180 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1428 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1187 1435
1188#ifndef WCONTINUED 1436#ifndef WCONTINUED
1189# define WCONTINUED 0 1437# define WCONTINUED 0
1190#endif 1438#endif
1191 1439
1440/* called on sigchld etc., calls waitpid */
1192static void 1441static void
1193childcb (EV_P_ ev_signal *sw, int revents) 1442childcb (EV_P_ ev_signal *sw, int revents)
1194{ 1443{
1195 int pid, status; 1444 int pid, status;
1196 1445
… …
1204 /* make sure we are called again until all children have been reaped */ 1453 /* make sure we are called again until all children have been reaped */
1205 /* we need to do it this way so that the callback gets called before we continue */ 1454 /* we need to do it this way so that the callback gets called before we continue */
1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1455 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1207 1456
1208 child_reap (EV_A_ pid, pid, status); 1457 child_reap (EV_A_ pid, pid, status);
1209 if (EV_PID_HASHSIZE > 1) 1458 if ((EV_PID_HASHSIZE) > 1)
1210 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1459 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1211} 1460}
1212 1461
1213#endif 1462#endif
1214 1463
… …
1281#ifdef __APPLE__ 1530#ifdef __APPLE__
1282 /* only select works correctly on that "unix-certified" platform */ 1531 /* only select works correctly on that "unix-certified" platform */
1283 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1532 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1284 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1533 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1285#endif 1534#endif
1535#ifdef __FreeBSD__
1536 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1537#endif
1286 1538
1287 return flags; 1539 return flags;
1288} 1540}
1289 1541
1290unsigned int 1542unsigned int
… …
1303ev_backend (EV_P) 1555ev_backend (EV_P)
1304{ 1556{
1305 return backend; 1557 return backend;
1306} 1558}
1307 1559
1560#if EV_FEATURE_API
1308unsigned int 1561unsigned int
1309ev_loop_count (EV_P) 1562ev_iteration (EV_P)
1310{ 1563{
1311 return loop_count; 1564 return loop_count;
1312} 1565}
1313 1566
1567unsigned int
1568ev_depth (EV_P)
1569{
1570 return loop_depth;
1571}
1572
1314void 1573void
1315ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1574ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316{ 1575{
1317 io_blocktime = interval; 1576 io_blocktime = interval;
1318} 1577}
… …
1321ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1580ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322{ 1581{
1323 timeout_blocktime = interval; 1582 timeout_blocktime = interval;
1324} 1583}
1325 1584
1585void
1586ev_set_userdata (EV_P_ void *data)
1587{
1588 userdata = data;
1589}
1590
1591void *
1592ev_userdata (EV_P)
1593{
1594 return userdata;
1595}
1596
1597void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1598{
1599 invoke_cb = invoke_pending_cb;
1600}
1601
1602void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1603{
1604 release_cb = release;
1605 acquire_cb = acquire;
1606}
1607#endif
1608
1609/* initialise a loop structure, must be zero-initialised */
1326static void noinline 1610static void noinline
1327loop_init (EV_P_ unsigned int flags) 1611loop_init (EV_P_ unsigned int flags)
1328{ 1612{
1329 if (!backend) 1613 if (!backend)
1330 { 1614 {
… …
1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1630 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347 have_monotonic = 1; 1631 have_monotonic = 1;
1348 } 1632 }
1349#endif 1633#endif
1350 1634
1635 /* pid check not overridable via env */
1636#ifndef _WIN32
1637 if (flags & EVFLAG_FORKCHECK)
1638 curpid = getpid ();
1639#endif
1640
1641 if (!(flags & EVFLAG_NOENV)
1642 && !enable_secure ()
1643 && getenv ("LIBEV_FLAGS"))
1644 flags = atoi (getenv ("LIBEV_FLAGS"));
1645
1351 ev_rt_now = ev_time (); 1646 ev_rt_now = ev_time ();
1352 mn_now = get_clock (); 1647 mn_now = get_clock ();
1353 now_floor = mn_now; 1648 now_floor = mn_now;
1354 rtmn_diff = ev_rt_now - mn_now; 1649 rtmn_diff = ev_rt_now - mn_now;
1650#if EV_FEATURE_API
1651 invoke_cb = ev_invoke_pending;
1652#endif
1355 1653
1356 io_blocktime = 0.; 1654 io_blocktime = 0.;
1357 timeout_blocktime = 0.; 1655 timeout_blocktime = 0.;
1358 backend = 0; 1656 backend = 0;
1359 backend_fd = -1; 1657 backend_fd = -1;
1360 gotasync = 0; 1658 sig_pending = 0;
1659#if EV_ASYNC_ENABLE
1660 async_pending = 0;
1661#endif
1361#if EV_USE_INOTIFY 1662#if EV_USE_INOTIFY
1362 fs_fd = -2; 1663 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363#endif 1664#endif
1364 1665#if EV_USE_SIGNALFD
1365 /* pid check not overridable via env */ 1666 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1366#ifndef _WIN32
1367 if (flags & EVFLAG_FORKCHECK)
1368 curpid = getpid ();
1369#endif 1667#endif
1370
1371 if (!(flags & EVFLAG_NOENV)
1372 && !enable_secure ()
1373 && getenv ("LIBEV_FLAGS"))
1374 flags = atoi (getenv ("LIBEV_FLAGS"));
1375 1668
1376 if (!(flags & 0x0000ffffU)) 1669 if (!(flags & 0x0000ffffU))
1377 flags |= ev_recommended_backends (); 1670 flags |= ev_recommended_backends ();
1378 1671
1379#if EV_USE_PORT 1672#if EV_USE_PORT
… …
1390#endif 1683#endif
1391#if EV_USE_SELECT 1684#if EV_USE_SELECT
1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1685 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393#endif 1686#endif
1394 1687
1688 ev_prepare_init (&pending_w, pendingcb);
1689
1690#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1395 ev_init (&pipeev, pipecb); 1691 ev_init (&pipe_w, pipecb);
1396 ev_set_priority (&pipeev, EV_MAXPRI); 1692 ev_set_priority (&pipe_w, EV_MAXPRI);
1693#endif
1397 } 1694 }
1398} 1695}
1399 1696
1697/* free up a loop structure */
1400static void noinline 1698static void noinline
1401loop_destroy (EV_P) 1699loop_destroy (EV_P)
1402{ 1700{
1403 int i; 1701 int i;
1404 1702
1405 if (ev_is_active (&pipeev)) 1703 if (ev_is_active (&pipe_w))
1406 { 1704 {
1407 ev_ref (EV_A); /* signal watcher */ 1705 /*ev_ref (EV_A);*/
1408 ev_io_stop (EV_A_ &pipeev); 1706 /*ev_io_stop (EV_A_ &pipe_w);*/
1409 1707
1410#if EV_USE_EVENTFD 1708#if EV_USE_EVENTFD
1411 if (evfd >= 0) 1709 if (evfd >= 0)
1412 close (evfd); 1710 close (evfd);
1413#endif 1711#endif
1414 1712
1415 if (evpipe [0] >= 0) 1713 if (evpipe [0] >= 0)
1416 { 1714 {
1417 close (evpipe [0]); 1715 EV_WIN32_CLOSE_FD (evpipe [0]);
1418 close (evpipe [1]); 1716 EV_WIN32_CLOSE_FD (evpipe [1]);
1419 } 1717 }
1420 } 1718 }
1719
1720#if EV_USE_SIGNALFD
1721 if (ev_is_active (&sigfd_w))
1722 close (sigfd);
1723#endif
1421 1724
1422#if EV_USE_INOTIFY 1725#if EV_USE_INOTIFY
1423 if (fs_fd >= 0) 1726 if (fs_fd >= 0)
1424 close (fs_fd); 1727 close (fs_fd);
1425#endif 1728#endif
… …
1449#if EV_IDLE_ENABLE 1752#if EV_IDLE_ENABLE
1450 array_free (idle, [i]); 1753 array_free (idle, [i]);
1451#endif 1754#endif
1452 } 1755 }
1453 1756
1454 ev_free (anfds); anfdmax = 0; 1757 ev_free (anfds); anfds = 0; anfdmax = 0;
1455 1758
1456 /* have to use the microsoft-never-gets-it-right macro */ 1759 /* have to use the microsoft-never-gets-it-right macro */
1760 array_free (rfeed, EMPTY);
1457 array_free (fdchange, EMPTY); 1761 array_free (fdchange, EMPTY);
1458 array_free (timer, EMPTY); 1762 array_free (timer, EMPTY);
1459#if EV_PERIODIC_ENABLE 1763#if EV_PERIODIC_ENABLE
1460 array_free (periodic, EMPTY); 1764 array_free (periodic, EMPTY);
1461#endif 1765#endif
… …
1470 1774
1471 backend = 0; 1775 backend = 0;
1472} 1776}
1473 1777
1474#if EV_USE_INOTIFY 1778#if EV_USE_INOTIFY
1475void inline_size infy_fork (EV_P); 1779inline_size void infy_fork (EV_P);
1476#endif 1780#endif
1477 1781
1478void inline_size 1782inline_size void
1479loop_fork (EV_P) 1783loop_fork (EV_P)
1480{ 1784{
1481#if EV_USE_PORT 1785#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1786 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483#endif 1787#endif
… …
1489#endif 1793#endif
1490#if EV_USE_INOTIFY 1794#if EV_USE_INOTIFY
1491 infy_fork (EV_A); 1795 infy_fork (EV_A);
1492#endif 1796#endif
1493 1797
1494 if (ev_is_active (&pipeev)) 1798 if (ev_is_active (&pipe_w))
1495 { 1799 {
1496 /* this "locks" the handlers against writing to the pipe */ 1800 /* this "locks" the handlers against writing to the pipe */
1497 /* while we modify the fd vars */ 1801 /* while we modify the fd vars */
1498 gotsig = 1; 1802 sig_pending = 1;
1499#if EV_ASYNC_ENABLE 1803#if EV_ASYNC_ENABLE
1500 gotasync = 1; 1804 async_pending = 1;
1501#endif 1805#endif
1502 1806
1503 ev_ref (EV_A); 1807 ev_ref (EV_A);
1504 ev_io_stop (EV_A_ &pipeev); 1808 ev_io_stop (EV_A_ &pipe_w);
1505 1809
1506#if EV_USE_EVENTFD 1810#if EV_USE_EVENTFD
1507 if (evfd >= 0) 1811 if (evfd >= 0)
1508 close (evfd); 1812 close (evfd);
1509#endif 1813#endif
1510 1814
1511 if (evpipe [0] >= 0) 1815 if (evpipe [0] >= 0)
1512 { 1816 {
1513 close (evpipe [0]); 1817 EV_WIN32_CLOSE_FD (evpipe [0]);
1514 close (evpipe [1]); 1818 EV_WIN32_CLOSE_FD (evpipe [1]);
1515 } 1819 }
1516 1820
1821#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1517 evpipe_init (EV_A); 1822 evpipe_init (EV_A);
1518 /* now iterate over everything, in case we missed something */ 1823 /* now iterate over everything, in case we missed something */
1519 pipecb (EV_A_ &pipeev, EV_READ); 1824 pipecb (EV_A_ &pipe_w, EV_READ);
1825#endif
1520 } 1826 }
1521 1827
1522 postfork = 0; 1828 postfork = 0;
1523} 1829}
1524 1830
1525#if EV_MULTIPLICITY 1831#if EV_MULTIPLICITY
1526 1832
1527struct ev_loop * 1833struct ev_loop *
1528ev_loop_new (unsigned int flags) 1834ev_loop_new (unsigned int flags)
1529{ 1835{
1530 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1836 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531 1837
1532 memset (loop, 0, sizeof (struct ev_loop)); 1838 memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534 loop_init (EV_A_ flags); 1839 loop_init (EV_A_ flags);
1535 1840
1536 if (ev_backend (EV_A)) 1841 if (ev_backend (EV_A))
1537 return loop; 1842 return EV_A;
1538 1843
1539 return 0; 1844 return 0;
1540} 1845}
1541 1846
1542void 1847void
… …
1549void 1854void
1550ev_loop_fork (EV_P) 1855ev_loop_fork (EV_P)
1551{ 1856{
1552 postfork = 1; /* must be in line with ev_default_fork */ 1857 postfork = 1; /* must be in line with ev_default_fork */
1553} 1858}
1859#endif /* multiplicity */
1554 1860
1555#if EV_VERIFY 1861#if EV_VERIFY
1556static void noinline 1862static void noinline
1557verify_watcher (EV_P_ W w) 1863verify_watcher (EV_P_ W w)
1558{ 1864{
… …
1586 verify_watcher (EV_A_ ws [cnt]); 1892 verify_watcher (EV_A_ ws [cnt]);
1587 } 1893 }
1588} 1894}
1589#endif 1895#endif
1590 1896
1897#if EV_FEATURE_API
1591void 1898void
1592ev_loop_verify (EV_P) 1899ev_verify (EV_P)
1593{ 1900{
1594#if EV_VERIFY 1901#if EV_VERIFY
1595 int i; 1902 int i;
1596 WL w; 1903 WL w;
1597 1904
… …
1636#if EV_ASYNC_ENABLE 1943#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt); 1944 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt); 1945 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif 1946#endif
1640 1947
1948#if EV_PREPARE_ENABLE
1641 assert (preparemax >= preparecnt); 1949 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt); 1950 array_verify (EV_A_ (W *)prepares, preparecnt);
1951#endif
1643 1952
1953#if EV_CHECK_ENABLE
1644 assert (checkmax >= checkcnt); 1954 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt); 1955 array_verify (EV_A_ (W *)checks, checkcnt);
1956#endif
1646 1957
1647# if 0 1958# if 0
1959#if EV_CHILD_ENABLE
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1960 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1649 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1961 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1962#endif
1650# endif 1963# endif
1651#endif 1964#endif
1652} 1965}
1653 1966#endif
1654#endif /* multiplicity */
1655 1967
1656#if EV_MULTIPLICITY 1968#if EV_MULTIPLICITY
1657struct ev_loop * 1969struct ev_loop *
1658ev_default_loop_init (unsigned int flags) 1970ev_default_loop_init (unsigned int flags)
1659#else 1971#else
… …
1662#endif 1974#endif
1663{ 1975{
1664 if (!ev_default_loop_ptr) 1976 if (!ev_default_loop_ptr)
1665 { 1977 {
1666#if EV_MULTIPLICITY 1978#if EV_MULTIPLICITY
1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1979 EV_P = ev_default_loop_ptr = &default_loop_struct;
1668#else 1980#else
1669 ev_default_loop_ptr = 1; 1981 ev_default_loop_ptr = 1;
1670#endif 1982#endif
1671 1983
1672 loop_init (EV_A_ flags); 1984 loop_init (EV_A_ flags);
1673 1985
1674 if (ev_backend (EV_A)) 1986 if (ev_backend (EV_A))
1675 { 1987 {
1676#ifndef _WIN32 1988#if EV_CHILD_ENABLE
1677 ev_signal_init (&childev, childcb, SIGCHLD); 1989 ev_signal_init (&childev, childcb, SIGCHLD);
1678 ev_set_priority (&childev, EV_MAXPRI); 1990 ev_set_priority (&childev, EV_MAXPRI);
1679 ev_signal_start (EV_A_ &childev); 1991 ev_signal_start (EV_A_ &childev);
1680 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1992 ev_unref (EV_A); /* child watcher should not keep loop alive */
1681#endif 1993#endif
… …
1689 2001
1690void 2002void
1691ev_default_destroy (void) 2003ev_default_destroy (void)
1692{ 2004{
1693#if EV_MULTIPLICITY 2005#if EV_MULTIPLICITY
1694 struct ev_loop *loop = ev_default_loop_ptr; 2006 EV_P = ev_default_loop_ptr;
1695#endif 2007#endif
1696 2008
1697 ev_default_loop_ptr = 0; 2009 ev_default_loop_ptr = 0;
1698 2010
1699#ifndef _WIN32 2011#if EV_CHILD_ENABLE
1700 ev_ref (EV_A); /* child watcher */ 2012 ev_ref (EV_A); /* child watcher */
1701 ev_signal_stop (EV_A_ &childev); 2013 ev_signal_stop (EV_A_ &childev);
1702#endif 2014#endif
1703 2015
1704 loop_destroy (EV_A); 2016 loop_destroy (EV_A);
… …
1706 2018
1707void 2019void
1708ev_default_fork (void) 2020ev_default_fork (void)
1709{ 2021{
1710#if EV_MULTIPLICITY 2022#if EV_MULTIPLICITY
1711 struct ev_loop *loop = ev_default_loop_ptr; 2023 EV_P = ev_default_loop_ptr;
1712#endif 2024#endif
1713 2025
1714 postfork = 1; /* must be in line with ev_loop_fork */ 2026 postfork = 1; /* must be in line with ev_loop_fork */
1715} 2027}
1716 2028
… …
1720ev_invoke (EV_P_ void *w, int revents) 2032ev_invoke (EV_P_ void *w, int revents)
1721{ 2033{
1722 EV_CB_INVOKE ((W)w, revents); 2034 EV_CB_INVOKE ((W)w, revents);
1723} 2035}
1724 2036
1725void inline_speed 2037unsigned int
1726call_pending (EV_P) 2038ev_pending_count (EV_P)
2039{
2040 int pri;
2041 unsigned int count = 0;
2042
2043 for (pri = NUMPRI; pri--; )
2044 count += pendingcnt [pri];
2045
2046 return count;
2047}
2048
2049void noinline
2050ev_invoke_pending (EV_P)
1727{ 2051{
1728 int pri; 2052 int pri;
1729 2053
1730 for (pri = NUMPRI; pri--; ) 2054 for (pri = NUMPRI; pri--; )
1731 while (pendingcnt [pri]) 2055 while (pendingcnt [pri])
1732 { 2056 {
1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2057 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734 2058
1735 if (expect_true (p->w))
1736 {
1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ 2059 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2060 /* ^ this is no longer true, as pending_w could be here */
1738 2061
1739 p->w->pending = 0; 2062 p->w->pending = 0;
1740 EV_CB_INVOKE (p->w, p->events); 2063 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK; 2064 EV_FREQUENT_CHECK;
1742 }
1743 } 2065 }
1744} 2066}
1745 2067
1746#if EV_IDLE_ENABLE 2068#if EV_IDLE_ENABLE
1747void inline_size 2069/* make idle watchers pending. this handles the "call-idle */
2070/* only when higher priorities are idle" logic */
2071inline_size void
1748idle_reify (EV_P) 2072idle_reify (EV_P)
1749{ 2073{
1750 if (expect_false (idleall)) 2074 if (expect_false (idleall))
1751 { 2075 {
1752 int pri; 2076 int pri;
… …
1764 } 2088 }
1765 } 2089 }
1766} 2090}
1767#endif 2091#endif
1768 2092
1769void inline_size 2093/* make timers pending */
2094inline_size void
1770timers_reify (EV_P) 2095timers_reify (EV_P)
1771{ 2096{
1772 EV_FREQUENT_CHECK; 2097 EV_FREQUENT_CHECK;
1773 2098
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2099 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 { 2100 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2101 do
1777
1778 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780 /* first reschedule or stop timer */
1781 if (w->repeat)
1782 { 2102 {
2103 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2104
2105 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2106
2107 /* first reschedule or stop timer */
2108 if (w->repeat)
2109 {
1783 ev_at (w) += w->repeat; 2110 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now) 2111 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now; 2112 ev_at (w) = mn_now;
1786 2113
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2114 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788 2115
1789 ANHE_at_cache (timers [HEAP0]); 2116 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0); 2117 downheap (timers, timercnt, HEAP0);
2118 }
2119 else
2120 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2121
2122 EV_FREQUENT_CHECK;
2123 feed_reverse (EV_A_ (W)w);
1791 } 2124 }
1792 else 2125 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794 2126
1795 EV_FREQUENT_CHECK; 2127 feed_reverse_done (EV_A_ EV_TIMER);
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 } 2128 }
1798} 2129}
1799 2130
1800#if EV_PERIODIC_ENABLE 2131#if EV_PERIODIC_ENABLE
1801void inline_size 2132/* make periodics pending */
2133inline_size void
1802periodics_reify (EV_P) 2134periodics_reify (EV_P)
1803{ 2135{
1804 EV_FREQUENT_CHECK; 2136 EV_FREQUENT_CHECK;
1805 2137
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2138 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 { 2139 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2140 int feed_count = 0;
1809 2141
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2142 do
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 { 2143 {
2144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2145
2146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2147
2148 /* first reschedule or stop timer */
2149 if (w->reschedule_cb)
2150 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2151 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 2152
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2153 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818 2154
1819 ANHE_at_cache (periodics [HEAP0]); 2155 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0); 2156 downheap (periodics, periodiccnt, HEAP0);
2157 }
2158 else if (w->interval)
2159 {
2160 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2161 /* if next trigger time is not sufficiently in the future, put it there */
2162 /* this might happen because of floating point inexactness */
2163 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2164 {
2165 ev_at (w) += w->interval;
2166
2167 /* if interval is unreasonably low we might still have a time in the past */
2168 /* so correct this. this will make the periodic very inexact, but the user */
2169 /* has effectively asked to get triggered more often than possible */
2170 if (ev_at (w) < ev_rt_now)
2171 ev_at (w) = ev_rt_now;
2172 }
2173
2174 ANHE_at_cache (periodics [HEAP0]);
2175 downheap (periodics, periodiccnt, HEAP0);
2176 }
2177 else
2178 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2179
2180 EV_FREQUENT_CHECK;
2181 feed_reverse (EV_A_ (W)w);
1821 } 2182 }
1822 else if (w->interval) 2183 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1823 {
1824 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825 /* if next trigger time is not sufficiently in the future, put it there */
1826 /* this might happen because of floating point inexactness */
1827 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828 {
1829 ev_at (w) += w->interval;
1830 2184
1831 /* if interval is unreasonably low we might still have a time in the past */
1832 /* so correct this. this will make the periodic very inexact, but the user */
1833 /* has effectively asked to get triggered more often than possible */
1834 if (ev_at (w) < ev_rt_now)
1835 ev_at (w) = ev_rt_now;
1836 }
1837
1838 ANHE_at_cache (periodics [HEAP0]);
1839 downheap (periodics, periodiccnt, HEAP0);
1840 }
1841 else
1842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844 EV_FREQUENT_CHECK;
1845 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2185 feed_reverse_done (EV_A_ EV_PERIODIC);
1846 } 2186 }
1847} 2187}
1848 2188
2189/* simply recalculate all periodics */
2190/* TODO: maybe ensure that at least one event happens when jumping forward? */
1849static void noinline 2191static void noinline
1850periodics_reschedule (EV_P) 2192periodics_reschedule (EV_P)
1851{ 2193{
1852 int i; 2194 int i;
1853 2195
… …
1866 2208
1867 reheap (periodics, periodiccnt); 2209 reheap (periodics, periodiccnt);
1868} 2210}
1869#endif 2211#endif
1870 2212
1871void inline_speed 2213/* adjust all timers by a given offset */
2214static void noinline
2215timers_reschedule (EV_P_ ev_tstamp adjust)
2216{
2217 int i;
2218
2219 for (i = 0; i < timercnt; ++i)
2220 {
2221 ANHE *he = timers + i + HEAP0;
2222 ANHE_w (*he)->at += adjust;
2223 ANHE_at_cache (*he);
2224 }
2225}
2226
2227/* fetch new monotonic and realtime times from the kernel */
2228/* also detect if there was a timejump, and act accordingly */
2229inline_speed void
1872time_update (EV_P_ ev_tstamp max_block) 2230time_update (EV_P_ ev_tstamp max_block)
1873{ 2231{
1874 int i;
1875
1876#if EV_USE_MONOTONIC 2232#if EV_USE_MONOTONIC
1877 if (expect_true (have_monotonic)) 2233 if (expect_true (have_monotonic))
1878 { 2234 {
2235 int i;
1879 ev_tstamp odiff = rtmn_diff; 2236 ev_tstamp odiff = rtmn_diff;
1880 2237
1881 mn_now = get_clock (); 2238 mn_now = get_clock ();
1882 2239
1883 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2240 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1909 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1910 mn_now = get_clock (); 2267 mn_now = get_clock ();
1911 now_floor = mn_now; 2268 now_floor = mn_now;
1912 } 2269 }
1913 2270
2271 /* no timer adjustment, as the monotonic clock doesn't jump */
2272 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914# if EV_PERIODIC_ENABLE 2273# if EV_PERIODIC_ENABLE
1915 periodics_reschedule (EV_A); 2274 periodics_reschedule (EV_A);
1916# endif 2275# endif
1917 /* no timer adjustment, as the monotonic clock doesn't jump */
1918 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919 } 2276 }
1920 else 2277 else
1921#endif 2278#endif
1922 { 2279 {
1923 ev_rt_now = ev_time (); 2280 ev_rt_now = ev_time ();
1924 2281
1925 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2282 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926 { 2283 {
2284 /* adjust timers. this is easy, as the offset is the same for all of them */
2285 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927#if EV_PERIODIC_ENABLE 2286#if EV_PERIODIC_ENABLE
1928 periodics_reschedule (EV_A); 2287 periodics_reschedule (EV_A);
1929#endif 2288#endif
1930 /* adjust timers. this is easy, as the offset is the same for all of them */
1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1934 ANHE_w (*he)->at += ev_rt_now - mn_now;
1935 ANHE_at_cache (*he);
1936 }
1937 } 2289 }
1938 2290
1939 mn_now = ev_rt_now; 2291 mn_now = ev_rt_now;
1940 } 2292 }
1941} 2293}
1942 2294
1943void 2295void
1944ev_ref (EV_P)
1945{
1946 ++activecnt;
1947}
1948
1949void
1950ev_unref (EV_P)
1951{
1952 --activecnt;
1953}
1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1961static int loop_done;
1962
1963void
1964ev_loop (EV_P_ int flags) 2296ev_loop (EV_P_ int flags)
1965{ 2297{
2298#if EV_FEATURE_API
2299 ++loop_depth;
2300#endif
2301
2302 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2303
1966 loop_done = EVUNLOOP_CANCEL; 2304 loop_done = EVUNLOOP_CANCEL;
1967 2305
1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2306 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969 2307
1970 do 2308 do
1971 { 2309 {
1972#if EV_VERIFY >= 2 2310#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A); 2311 ev_verify (EV_A);
1974#endif 2312#endif
1975 2313
1976#ifndef _WIN32 2314#ifndef _WIN32
1977 if (expect_false (curpid)) /* penalise the forking check even more */ 2315 if (expect_false (curpid)) /* penalise the forking check even more */
1978 if (expect_false (getpid () != curpid)) 2316 if (expect_false (getpid () != curpid))
… …
1986 /* we might have forked, so queue fork handlers */ 2324 /* we might have forked, so queue fork handlers */
1987 if (expect_false (postfork)) 2325 if (expect_false (postfork))
1988 if (forkcnt) 2326 if (forkcnt)
1989 { 2327 {
1990 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2328 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991 call_pending (EV_A); 2329 EV_INVOKE_PENDING;
1992 } 2330 }
1993#endif 2331#endif
1994 2332
2333#if EV_PREPARE_ENABLE
1995 /* queue prepare watchers (and execute them) */ 2334 /* queue prepare watchers (and execute them) */
1996 if (expect_false (preparecnt)) 2335 if (expect_false (preparecnt))
1997 { 2336 {
1998 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2337 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999 call_pending (EV_A); 2338 EV_INVOKE_PENDING;
2000 } 2339 }
2340#endif
2001 2341
2002 if (expect_false (!activecnt)) 2342 if (expect_false (loop_done))
2003 break; 2343 break;
2004 2344
2005 /* we might have forked, so reify kernel state if necessary */ 2345 /* we might have forked, so reify kernel state if necessary */
2006 if (expect_false (postfork)) 2346 if (expect_false (postfork))
2007 loop_fork (EV_A); 2347 loop_fork (EV_A);
… …
2014 ev_tstamp waittime = 0.; 2354 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.; 2355 ev_tstamp sleeptime = 0.;
2016 2356
2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2357 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2018 { 2358 {
2359 /* remember old timestamp for io_blocktime calculation */
2360 ev_tstamp prev_mn_now = mn_now;
2361
2019 /* update time to cancel out callback processing overhead */ 2362 /* update time to cancel out callback processing overhead */
2020 time_update (EV_A_ 1e100); 2363 time_update (EV_A_ 1e100);
2021 2364
2022 waittime = MAX_BLOCKTIME; 2365 waittime = MAX_BLOCKTIME;
2023 2366
… …
2033 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2376 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2034 if (waittime > to) waittime = to; 2377 if (waittime > to) waittime = to;
2035 } 2378 }
2036#endif 2379#endif
2037 2380
2381 /* don't let timeouts decrease the waittime below timeout_blocktime */
2038 if (expect_false (waittime < timeout_blocktime)) 2382 if (expect_false (waittime < timeout_blocktime))
2039 waittime = timeout_blocktime; 2383 waittime = timeout_blocktime;
2040 2384
2041 sleeptime = waittime - backend_fudge; 2385 /* extra check because io_blocktime is commonly 0 */
2042
2043 if (expect_true (sleeptime > io_blocktime)) 2386 if (expect_false (io_blocktime))
2044 sleeptime = io_blocktime;
2045
2046 if (sleeptime)
2047 { 2387 {
2388 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2389
2390 if (sleeptime > waittime - backend_fudge)
2391 sleeptime = waittime - backend_fudge;
2392
2393 if (expect_true (sleeptime > 0.))
2394 {
2048 ev_sleep (sleeptime); 2395 ev_sleep (sleeptime);
2049 waittime -= sleeptime; 2396 waittime -= sleeptime;
2397 }
2050 } 2398 }
2051 } 2399 }
2052 2400
2401#if EV_FEATURE_API
2053 ++loop_count; 2402 ++loop_count;
2403#endif
2404 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2054 backend_poll (EV_A_ waittime); 2405 backend_poll (EV_A_ waittime);
2406 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2055 2407
2056 /* update ev_rt_now, do magic */ 2408 /* update ev_rt_now, do magic */
2057 time_update (EV_A_ waittime + sleeptime); 2409 time_update (EV_A_ waittime + sleeptime);
2058 } 2410 }
2059 2411
… …
2066#if EV_IDLE_ENABLE 2418#if EV_IDLE_ENABLE
2067 /* queue idle watchers unless other events are pending */ 2419 /* queue idle watchers unless other events are pending */
2068 idle_reify (EV_A); 2420 idle_reify (EV_A);
2069#endif 2421#endif
2070 2422
2423#if EV_CHECK_ENABLE
2071 /* queue check watchers, to be executed first */ 2424 /* queue check watchers, to be executed first */
2072 if (expect_false (checkcnt)) 2425 if (expect_false (checkcnt))
2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2426 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2427#endif
2074 2428
2075 call_pending (EV_A); 2429 EV_INVOKE_PENDING;
2076 } 2430 }
2077 while (expect_true ( 2431 while (expect_true (
2078 activecnt 2432 activecnt
2079 && !loop_done 2433 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2434 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2081 )); 2435 ));
2082 2436
2083 if (loop_done == EVUNLOOP_ONE) 2437 if (loop_done == EVUNLOOP_ONE)
2084 loop_done = EVUNLOOP_CANCEL; 2438 loop_done = EVUNLOOP_CANCEL;
2439
2440#if EV_FEATURE_API
2441 --loop_depth;
2442#endif
2085} 2443}
2086 2444
2087void 2445void
2088ev_unloop (EV_P_ int how) 2446ev_unloop (EV_P_ int how)
2089{ 2447{
2090 loop_done = how; 2448 loop_done = how;
2091} 2449}
2092 2450
2451void
2452ev_ref (EV_P)
2453{
2454 ++activecnt;
2455}
2456
2457void
2458ev_unref (EV_P)
2459{
2460 --activecnt;
2461}
2462
2463void
2464ev_now_update (EV_P)
2465{
2466 time_update (EV_A_ 1e100);
2467}
2468
2469void
2470ev_suspend (EV_P)
2471{
2472 ev_now_update (EV_A);
2473}
2474
2475void
2476ev_resume (EV_P)
2477{
2478 ev_tstamp mn_prev = mn_now;
2479
2480 ev_now_update (EV_A);
2481 timers_reschedule (EV_A_ mn_now - mn_prev);
2482#if EV_PERIODIC_ENABLE
2483 /* TODO: really do this? */
2484 periodics_reschedule (EV_A);
2485#endif
2486}
2487
2093/*****************************************************************************/ 2488/*****************************************************************************/
2489/* singly-linked list management, used when the expected list length is short */
2094 2490
2095void inline_size 2491inline_size void
2096wlist_add (WL *head, WL elem) 2492wlist_add (WL *head, WL elem)
2097{ 2493{
2098 elem->next = *head; 2494 elem->next = *head;
2099 *head = elem; 2495 *head = elem;
2100} 2496}
2101 2497
2102void inline_size 2498inline_size void
2103wlist_del (WL *head, WL elem) 2499wlist_del (WL *head, WL elem)
2104{ 2500{
2105 while (*head) 2501 while (*head)
2106 { 2502 {
2107 if (*head == elem) 2503 if (expect_true (*head == elem))
2108 { 2504 {
2109 *head = elem->next; 2505 *head = elem->next;
2110 return; 2506 break;
2111 } 2507 }
2112 2508
2113 head = &(*head)->next; 2509 head = &(*head)->next;
2114 } 2510 }
2115} 2511}
2116 2512
2117void inline_speed 2513/* internal, faster, version of ev_clear_pending */
2514inline_speed void
2118clear_pending (EV_P_ W w) 2515clear_pending (EV_P_ W w)
2119{ 2516{
2120 if (w->pending) 2517 if (w->pending)
2121 { 2518 {
2122 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2519 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123 w->pending = 0; 2520 w->pending = 0;
2124 } 2521 }
2125} 2522}
2126 2523
2127int 2524int
… …
2131 int pending = w_->pending; 2528 int pending = w_->pending;
2132 2529
2133 if (expect_true (pending)) 2530 if (expect_true (pending))
2134 { 2531 {
2135 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2532 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2533 p->w = (W)&pending_w;
2136 w_->pending = 0; 2534 w_->pending = 0;
2137 p->w = 0;
2138 return p->events; 2535 return p->events;
2139 } 2536 }
2140 else 2537 else
2141 return 0; 2538 return 0;
2142} 2539}
2143 2540
2144void inline_size 2541inline_size void
2145pri_adjust (EV_P_ W w) 2542pri_adjust (EV_P_ W w)
2146{ 2543{
2147 int pri = w->priority; 2544 int pri = ev_priority (w);
2148 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2545 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2546 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150 w->priority = pri; 2547 ev_set_priority (w, pri);
2151} 2548}
2152 2549
2153void inline_speed 2550inline_speed void
2154ev_start (EV_P_ W w, int active) 2551ev_start (EV_P_ W w, int active)
2155{ 2552{
2156 pri_adjust (EV_A_ w); 2553 pri_adjust (EV_A_ w);
2157 w->active = active; 2554 w->active = active;
2158 ev_ref (EV_A); 2555 ev_ref (EV_A);
2159} 2556}
2160 2557
2161void inline_size 2558inline_size void
2162ev_stop (EV_P_ W w) 2559ev_stop (EV_P_ W w)
2163{ 2560{
2164 ev_unref (EV_A); 2561 ev_unref (EV_A);
2165 w->active = 0; 2562 w->active = 0;
2166} 2563}
… …
2174 2571
2175 if (expect_false (ev_is_active (w))) 2572 if (expect_false (ev_is_active (w)))
2176 return; 2573 return;
2177 2574
2178 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2575 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2576 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180 2577
2181 EV_FREQUENT_CHECK; 2578 EV_FREQUENT_CHECK;
2182 2579
2183 ev_start (EV_A_ (W)w, 1); 2580 ev_start (EV_A_ (W)w, 1);
2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2581 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185 wlist_add (&anfds[fd].head, (WL)w); 2582 wlist_add (&anfds[fd].head, (WL)w);
2186 2583
2187 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2584 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188 w->events &= ~EV_IOFDSET; 2585 w->events &= ~EV__IOFDSET;
2189 2586
2190 EV_FREQUENT_CHECK; 2587 EV_FREQUENT_CHECK;
2191} 2588}
2192 2589
2193void noinline 2590void noinline
… …
2254 timers [active] = timers [timercnt + HEAP0]; 2651 timers [active] = timers [timercnt + HEAP0];
2255 adjustheap (timers, timercnt, active); 2652 adjustheap (timers, timercnt, active);
2256 } 2653 }
2257 } 2654 }
2258 2655
2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now; 2656 ev_at (w) -= mn_now;
2262 2657
2263 ev_stop (EV_A_ (W)w); 2658 ev_stop (EV_A_ (W)w);
2659
2660 EV_FREQUENT_CHECK;
2264} 2661}
2265 2662
2266void noinline 2663void noinline
2267ev_timer_again (EV_P_ ev_timer *w) 2664ev_timer_again (EV_P_ ev_timer *w)
2268{ 2665{
… …
2286 } 2683 }
2287 2684
2288 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
2289} 2686}
2290 2687
2688ev_tstamp
2689ev_timer_remaining (EV_P_ ev_timer *w)
2690{
2691 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2692}
2693
2291#if EV_PERIODIC_ENABLE 2694#if EV_PERIODIC_ENABLE
2292void noinline 2695void noinline
2293ev_periodic_start (EV_P_ ev_periodic *w) 2696ev_periodic_start (EV_P_ ev_periodic *w)
2294{ 2697{
2295 if (expect_false (ev_is_active (w))) 2698 if (expect_false (ev_is_active (w)))
… …
2341 periodics [active] = periodics [periodiccnt + HEAP0]; 2744 periodics [active] = periodics [periodiccnt + HEAP0];
2342 adjustheap (periodics, periodiccnt, active); 2745 adjustheap (periodics, periodiccnt, active);
2343 } 2746 }
2344 } 2747 }
2345 2748
2346 EV_FREQUENT_CHECK;
2347
2348 ev_stop (EV_A_ (W)w); 2749 ev_stop (EV_A_ (W)w);
2750
2751 EV_FREQUENT_CHECK;
2349} 2752}
2350 2753
2351void noinline 2754void noinline
2352ev_periodic_again (EV_P_ ev_periodic *w) 2755ev_periodic_again (EV_P_ ev_periodic *w)
2353{ 2756{
… …
2359 2762
2360#ifndef SA_RESTART 2763#ifndef SA_RESTART
2361# define SA_RESTART 0 2764# define SA_RESTART 0
2362#endif 2765#endif
2363 2766
2767#if EV_SIGNAL_ENABLE
2768
2364void noinline 2769void noinline
2365ev_signal_start (EV_P_ ev_signal *w) 2770ev_signal_start (EV_P_ ev_signal *w)
2366{ 2771{
2367#if EV_MULTIPLICITY
2368 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2369#endif
2370 if (expect_false (ev_is_active (w))) 2772 if (expect_false (ev_is_active (w)))
2371 return; 2773 return;
2372 2774
2373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2775 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374 2776
2375 evpipe_init (EV_A); 2777#if EV_MULTIPLICITY
2778 assert (("libev: a signal must not be attached to two different loops",
2779 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376 2780
2377 EV_FREQUENT_CHECK; 2781 signals [w->signum - 1].loop = EV_A;
2782#endif
2378 2783
2784 EV_FREQUENT_CHECK;
2785
2786#if EV_USE_SIGNALFD
2787 if (sigfd == -2)
2379 { 2788 {
2380#ifndef _WIN32 2789 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381 sigset_t full, prev; 2790 if (sigfd < 0 && errno == EINVAL)
2382 sigfillset (&full); 2791 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383 sigprocmask (SIG_SETMASK, &full, &prev);
2384#endif
2385 2792
2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2793 if (sigfd >= 0)
2794 {
2795 fd_intern (sigfd); /* doing it twice will not hurt */
2387 2796
2388#ifndef _WIN32 2797 sigemptyset (&sigfd_set);
2389 sigprocmask (SIG_SETMASK, &prev, 0); 2798
2390#endif 2799 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2800 ev_set_priority (&sigfd_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &sigfd_w);
2802 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2803 }
2391 } 2804 }
2805
2806 if (sigfd >= 0)
2807 {
2808 /* TODO: check .head */
2809 sigaddset (&sigfd_set, w->signum);
2810 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2811
2812 signalfd (sigfd, &sigfd_set, 0);
2813 }
2814#endif
2392 2815
2393 ev_start (EV_A_ (W)w, 1); 2816 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&signals [w->signum - 1].head, (WL)w); 2817 wlist_add (&signals [w->signum - 1].head, (WL)w);
2395 2818
2396 if (!((WL)w)->next) 2819 if (!((WL)w)->next)
2820# if EV_USE_SIGNALFD
2821 if (sigfd < 0) /*TODO*/
2822# endif
2397 { 2823 {
2398#if _WIN32 2824# ifdef _WIN32
2825 evpipe_init (EV_A);
2826
2399 signal (w->signum, ev_sighandler); 2827 signal (w->signum, ev_sighandler);
2400#else 2828# else
2401 struct sigaction sa; 2829 struct sigaction sa;
2830
2831 evpipe_init (EV_A);
2832
2402 sa.sa_handler = ev_sighandler; 2833 sa.sa_handler = ev_sighandler;
2403 sigfillset (&sa.sa_mask); 2834 sigfillset (&sa.sa_mask);
2404 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2835 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405 sigaction (w->signum, &sa, 0); 2836 sigaction (w->signum, &sa, 0);
2837
2838 sigemptyset (&sa.sa_mask);
2839 sigaddset (&sa.sa_mask, w->signum);
2840 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2406#endif 2841#endif
2407 } 2842 }
2408 2843
2409 EV_FREQUENT_CHECK; 2844 EV_FREQUENT_CHECK;
2410} 2845}
2411 2846
2412void noinline 2847void noinline
… …
2420 2855
2421 wlist_del (&signals [w->signum - 1].head, (WL)w); 2856 wlist_del (&signals [w->signum - 1].head, (WL)w);
2422 ev_stop (EV_A_ (W)w); 2857 ev_stop (EV_A_ (W)w);
2423 2858
2424 if (!signals [w->signum - 1].head) 2859 if (!signals [w->signum - 1].head)
2860 {
2861#if EV_MULTIPLICITY
2862 signals [w->signum - 1].loop = 0; /* unattach from signal */
2863#endif
2864#if EV_USE_SIGNALFD
2865 if (sigfd >= 0)
2866 {
2867 sigset_t ss;
2868
2869 sigemptyset (&ss);
2870 sigaddset (&ss, w->signum);
2871 sigdelset (&sigfd_set, w->signum);
2872
2873 signalfd (sigfd, &sigfd_set, 0);
2874 sigprocmask (SIG_UNBLOCK, &ss, 0);
2875 }
2876 else
2877#endif
2425 signal (w->signum, SIG_DFL); 2878 signal (w->signum, SIG_DFL);
2879 }
2426 2880
2427 EV_FREQUENT_CHECK; 2881 EV_FREQUENT_CHECK;
2428} 2882}
2883
2884#endif
2885
2886#if EV_CHILD_ENABLE
2429 2887
2430void 2888void
2431ev_child_start (EV_P_ ev_child *w) 2889ev_child_start (EV_P_ ev_child *w)
2432{ 2890{
2433#if EV_MULTIPLICITY 2891#if EV_MULTIPLICITY
… …
2437 return; 2895 return;
2438 2896
2439 EV_FREQUENT_CHECK; 2897 EV_FREQUENT_CHECK;
2440 2898
2441 ev_start (EV_A_ (W)w, 1); 2899 ev_start (EV_A_ (W)w, 1);
2442 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2900 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2443 2901
2444 EV_FREQUENT_CHECK; 2902 EV_FREQUENT_CHECK;
2445} 2903}
2446 2904
2447void 2905void
… …
2451 if (expect_false (!ev_is_active (w))) 2909 if (expect_false (!ev_is_active (w)))
2452 return; 2910 return;
2453 2911
2454 EV_FREQUENT_CHECK; 2912 EV_FREQUENT_CHECK;
2455 2913
2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2914 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2457 ev_stop (EV_A_ (W)w); 2915 ev_stop (EV_A_ (W)w);
2458 2916
2459 EV_FREQUENT_CHECK; 2917 EV_FREQUENT_CHECK;
2460} 2918}
2919
2920#endif
2461 2921
2462#if EV_STAT_ENABLE 2922#if EV_STAT_ENABLE
2463 2923
2464# ifdef _WIN32 2924# ifdef _WIN32
2465# undef lstat 2925# undef lstat
… …
2471#define MIN_STAT_INTERVAL 0.1074891 2931#define MIN_STAT_INTERVAL 0.1074891
2472 2932
2473static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2933static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2474 2934
2475#if EV_USE_INOTIFY 2935#if EV_USE_INOTIFY
2476# define EV_INOTIFY_BUFSIZE 8192 2936
2937/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2938# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2477 2939
2478static void noinline 2940static void noinline
2479infy_add (EV_P_ ev_stat *w) 2941infy_add (EV_P_ ev_stat *w)
2480{ 2942{
2481 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); 2943 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);
2482 2944
2483 if (w->wd < 0) 2945 if (w->wd >= 0)
2946 {
2947 struct statfs sfs;
2948
2949 /* now local changes will be tracked by inotify, but remote changes won't */
2950 /* unless the filesystem is known to be local, we therefore still poll */
2951 /* also do poll on <2.6.25, but with normal frequency */
2952
2953 if (!fs_2625)
2954 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2955 else if (!statfs (w->path, &sfs)
2956 && (sfs.f_type == 0x1373 /* devfs */
2957 || sfs.f_type == 0xEF53 /* ext2/3 */
2958 || sfs.f_type == 0x3153464a /* jfs */
2959 || sfs.f_type == 0x52654973 /* reiser3 */
2960 || sfs.f_type == 0x01021994 /* tempfs */
2961 || sfs.f_type == 0x58465342 /* xfs */))
2962 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2963 else
2964 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2484 { 2965 }
2966 else
2967 {
2968 /* can't use inotify, continue to stat */
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2969 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2486 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2487 2970
2488 /* monitor some parent directory for speedup hints */ 2971 /* if path is not there, monitor some parent directory for speedup hints */
2489 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2972 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2490 /* but an efficiency issue only */ 2973 /* but an efficiency issue only */
2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2974 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2492 { 2975 {
2493 char path [4096]; 2976 char path [4096];
… …
2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2992 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2510 } 2993 }
2511 } 2994 }
2512 2995
2513 if (w->wd >= 0) 2996 if (w->wd >= 0)
2514 {
2515 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2997 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2516 2998
2517 /* now local changes will be tracked by inotify, but remote changes won't */ 2999 /* now re-arm timer, if required */
2518 /* unless the filesystem it known to be local, we therefore still poll */ 3000 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2519 /* also do poll on <2.6.25, but with normal frequency */
2520 struct statfs sfs;
2521
2522 if (fs_2625 && !statfs (w->path, &sfs))
2523 if (sfs.f_type == 0x1373 /* devfs */
2524 || sfs.f_type == 0xEF53 /* ext2/3 */
2525 || sfs.f_type == 0x3153464a /* jfs */
2526 || sfs.f_type == 0x52654973 /* reiser3 */
2527 || sfs.f_type == 0x01021994 /* tempfs */
2528 || sfs.f_type == 0x58465342 /* xfs */)
2529 return;
2530
2531 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2532 ev_timer_again (EV_A_ &w->timer); 3001 ev_timer_again (EV_A_ &w->timer);
2533 } 3002 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2534} 3003}
2535 3004
2536static void noinline 3005static void noinline
2537infy_del (EV_P_ ev_stat *w) 3006infy_del (EV_P_ ev_stat *w)
2538{ 3007{
… …
2541 3010
2542 if (wd < 0) 3011 if (wd < 0)
2543 return; 3012 return;
2544 3013
2545 w->wd = -2; 3014 w->wd = -2;
2546 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3015 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2547 wlist_del (&fs_hash [slot].head, (WL)w); 3016 wlist_del (&fs_hash [slot].head, (WL)w);
2548 3017
2549 /* remove this watcher, if others are watching it, they will rearm */ 3018 /* remove this watcher, if others are watching it, they will rearm */
2550 inotify_rm_watch (fs_fd, wd); 3019 inotify_rm_watch (fs_fd, wd);
2551} 3020}
… …
2553static void noinline 3022static void noinline
2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3023infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2555{ 3024{
2556 if (slot < 0) 3025 if (slot < 0)
2557 /* overflow, need to check for all hash slots */ 3026 /* overflow, need to check for all hash slots */
2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3027 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2559 infy_wd (EV_A_ slot, wd, ev); 3028 infy_wd (EV_A_ slot, wd, ev);
2560 else 3029 else
2561 { 3030 {
2562 WL w_; 3031 WL w_;
2563 3032
2564 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3033 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2565 { 3034 {
2566 ev_stat *w = (ev_stat *)w_; 3035 ev_stat *w = (ev_stat *)w_;
2567 w_ = w_->next; /* lets us remove this watcher and all before it */ 3036 w_ = w_->next; /* lets us remove this watcher and all before it */
2568 3037
2569 if (w->wd == wd || wd == -1) 3038 if (w->wd == wd || wd == -1)
2570 { 3039 {
2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3040 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2572 { 3041 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3042 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2574 w->wd = -1; 3043 w->wd = -1;
2575 infy_add (EV_A_ w); /* re-add, no matter what */ 3044 infy_add (EV_A_ w); /* re-add, no matter what */
2576 } 3045 }
2577 3046
2578 stat_timer_cb (EV_A_ &w->timer, 0); 3047 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2583 3052
2584static void 3053static void
2585infy_cb (EV_P_ ev_io *w, int revents) 3054infy_cb (EV_P_ ev_io *w, int revents)
2586{ 3055{
2587 char buf [EV_INOTIFY_BUFSIZE]; 3056 char buf [EV_INOTIFY_BUFSIZE];
2588 struct inotify_event *ev = (struct inotify_event *)buf;
2589 int ofs; 3057 int ofs;
2590 int len = read (fs_fd, buf, sizeof (buf)); 3058 int len = read (fs_fd, buf, sizeof (buf));
2591 3059
2592 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3060 for (ofs = 0; ofs < len; )
3061 {
3062 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2593 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3063 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3064 ofs += sizeof (struct inotify_event) + ev->len;
3065 }
2594} 3066}
2595 3067
2596void inline_size 3068inline_size unsigned int
3069ev_linux_version (void)
3070{
3071 struct utsname buf;
3072 unsigned int v;
3073 int i;
3074 char *p = buf.release;
3075
3076 if (uname (&buf))
3077 return 0;
3078
3079 for (i = 3+1; --i; )
3080 {
3081 unsigned int c = 0;
3082
3083 for (;;)
3084 {
3085 if (*p >= '0' && *p <= '9')
3086 c = c * 10 + *p++ - '0';
3087 else
3088 {
3089 p += *p == '.';
3090 break;
3091 }
3092 }
3093
3094 v = (v << 8) | c;
3095 }
3096
3097 return v;
3098}
3099
3100inline_size void
2597check_2625 (EV_P) 3101ev_check_2625 (EV_P)
2598{ 3102{
2599 /* kernels < 2.6.25 are borked 3103 /* kernels < 2.6.25 are borked
2600 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3104 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601 */ 3105 */
2602 struct utsname buf; 3106 if (ev_linux_version () < 0x020619)
2603 int major, minor, micro;
2604
2605 if (uname (&buf))
2606 return; 3107 return;
2607 3108
2608 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2609 return;
2610
2611 if (major < 2
2612 || (major == 2 && minor < 6)
2613 || (major == 2 && minor == 6 && micro < 25))
2614 return;
2615
2616 fs_2625 = 1; 3109 fs_2625 = 1;
2617} 3110}
2618 3111
2619void inline_size 3112inline_size int
3113infy_newfd (void)
3114{
3115#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3116 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3117 if (fd >= 0)
3118 return fd;
3119#endif
3120 return inotify_init ();
3121}
3122
3123inline_size void
2620infy_init (EV_P) 3124infy_init (EV_P)
2621{ 3125{
2622 if (fs_fd != -2) 3126 if (fs_fd != -2)
2623 return; 3127 return;
2624 3128
2625 fs_fd = -1; 3129 fs_fd = -1;
2626 3130
2627 check_2625 (EV_A); 3131 ev_check_2625 (EV_A);
2628 3132
2629 fs_fd = inotify_init (); 3133 fs_fd = infy_newfd ();
2630 3134
2631 if (fs_fd >= 0) 3135 if (fs_fd >= 0)
2632 { 3136 {
3137 fd_intern (fs_fd);
2633 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3138 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2634 ev_set_priority (&fs_w, EV_MAXPRI); 3139 ev_set_priority (&fs_w, EV_MAXPRI);
2635 ev_io_start (EV_A_ &fs_w); 3140 ev_io_start (EV_A_ &fs_w);
3141 ev_unref (EV_A);
2636 } 3142 }
2637} 3143}
2638 3144
2639void inline_size 3145inline_size void
2640infy_fork (EV_P) 3146infy_fork (EV_P)
2641{ 3147{
2642 int slot; 3148 int slot;
2643 3149
2644 if (fs_fd < 0) 3150 if (fs_fd < 0)
2645 return; 3151 return;
2646 3152
3153 ev_ref (EV_A);
3154 ev_io_stop (EV_A_ &fs_w);
2647 close (fs_fd); 3155 close (fs_fd);
2648 fs_fd = inotify_init (); 3156 fs_fd = infy_newfd ();
2649 3157
3158 if (fs_fd >= 0)
3159 {
3160 fd_intern (fs_fd);
3161 ev_io_set (&fs_w, fs_fd, EV_READ);
3162 ev_io_start (EV_A_ &fs_w);
3163 ev_unref (EV_A);
3164 }
3165
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3166 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 { 3167 {
2652 WL w_ = fs_hash [slot].head; 3168 WL w_ = fs_hash [slot].head;
2653 fs_hash [slot].head = 0; 3169 fs_hash [slot].head = 0;
2654 3170
2655 while (w_) 3171 while (w_)
… …
2660 w->wd = -1; 3176 w->wd = -1;
2661 3177
2662 if (fs_fd >= 0) 3178 if (fs_fd >= 0)
2663 infy_add (EV_A_ w); /* re-add, no matter what */ 3179 infy_add (EV_A_ w); /* re-add, no matter what */
2664 else 3180 else
3181 {
3182 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3183 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2665 ev_timer_again (EV_A_ &w->timer); 3184 ev_timer_again (EV_A_ &w->timer);
3185 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3186 }
2666 } 3187 }
2667 } 3188 }
2668} 3189}
2669 3190
2670#endif 3191#endif
… …
2687static void noinline 3208static void noinline
2688stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3209stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2689{ 3210{
2690 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3211 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2691 3212
2692 /* we copy this here each the time so that */ 3213 ev_statdata prev = w->attr;
2693 /* prev has the old value when the callback gets invoked */
2694 w->prev = w->attr;
2695 ev_stat_stat (EV_A_ w); 3214 ev_stat_stat (EV_A_ w);
2696 3215
2697 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3216 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2698 if ( 3217 if (
2699 w->prev.st_dev != w->attr.st_dev 3218 prev.st_dev != w->attr.st_dev
2700 || w->prev.st_ino != w->attr.st_ino 3219 || prev.st_ino != w->attr.st_ino
2701 || w->prev.st_mode != w->attr.st_mode 3220 || prev.st_mode != w->attr.st_mode
2702 || w->prev.st_nlink != w->attr.st_nlink 3221 || prev.st_nlink != w->attr.st_nlink
2703 || w->prev.st_uid != w->attr.st_uid 3222 || prev.st_uid != w->attr.st_uid
2704 || w->prev.st_gid != w->attr.st_gid 3223 || prev.st_gid != w->attr.st_gid
2705 || w->prev.st_rdev != w->attr.st_rdev 3224 || prev.st_rdev != w->attr.st_rdev
2706 || w->prev.st_size != w->attr.st_size 3225 || prev.st_size != w->attr.st_size
2707 || w->prev.st_atime != w->attr.st_atime 3226 || prev.st_atime != w->attr.st_atime
2708 || w->prev.st_mtime != w->attr.st_mtime 3227 || prev.st_mtime != w->attr.st_mtime
2709 || w->prev.st_ctime != w->attr.st_ctime 3228 || prev.st_ctime != w->attr.st_ctime
2710 ) { 3229 ) {
3230 /* we only update w->prev on actual differences */
3231 /* in case we test more often than invoke the callback, */
3232 /* to ensure that prev is always different to attr */
3233 w->prev = prev;
3234
2711 #if EV_USE_INOTIFY 3235 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0) 3236 if (fs_fd >= 0)
2713 { 3237 {
2714 infy_del (EV_A_ w); 3238 infy_del (EV_A_ w);
2715 infy_add (EV_A_ w); 3239 infy_add (EV_A_ w);
… …
2740 3264
2741 if (fs_fd >= 0) 3265 if (fs_fd >= 0)
2742 infy_add (EV_A_ w); 3266 infy_add (EV_A_ w);
2743 else 3267 else
2744#endif 3268#endif
3269 {
2745 ev_timer_again (EV_A_ &w->timer); 3270 ev_timer_again (EV_A_ &w->timer);
3271 ev_unref (EV_A);
3272 }
2746 3273
2747 ev_start (EV_A_ (W)w, 1); 3274 ev_start (EV_A_ (W)w, 1);
2748 3275
2749 EV_FREQUENT_CHECK; 3276 EV_FREQUENT_CHECK;
2750} 3277}
… …
2759 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2760 3287
2761#if EV_USE_INOTIFY 3288#if EV_USE_INOTIFY
2762 infy_del (EV_A_ w); 3289 infy_del (EV_A_ w);
2763#endif 3290#endif
3291
3292 if (ev_is_active (&w->timer))
3293 {
3294 ev_ref (EV_A);
2764 ev_timer_stop (EV_A_ &w->timer); 3295 ev_timer_stop (EV_A_ &w->timer);
3296 }
2765 3297
2766 ev_stop (EV_A_ (W)w); 3298 ev_stop (EV_A_ (W)w);
2767 3299
2768 EV_FREQUENT_CHECK; 3300 EV_FREQUENT_CHECK;
2769} 3301}
… …
2814 3346
2815 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2816} 3348}
2817#endif 3349#endif
2818 3350
3351#if EV_PREPARE_ENABLE
2819void 3352void
2820ev_prepare_start (EV_P_ ev_prepare *w) 3353ev_prepare_start (EV_P_ ev_prepare *w)
2821{ 3354{
2822 if (expect_false (ev_is_active (w))) 3355 if (expect_false (ev_is_active (w)))
2823 return; 3356 return;
… …
2849 3382
2850 ev_stop (EV_A_ (W)w); 3383 ev_stop (EV_A_ (W)w);
2851 3384
2852 EV_FREQUENT_CHECK; 3385 EV_FREQUENT_CHECK;
2853} 3386}
3387#endif
2854 3388
3389#if EV_CHECK_ENABLE
2855void 3390void
2856ev_check_start (EV_P_ ev_check *w) 3391ev_check_start (EV_P_ ev_check *w)
2857{ 3392{
2858 if (expect_false (ev_is_active (w))) 3393 if (expect_false (ev_is_active (w)))
2859 return; 3394 return;
… …
2885 3420
2886 ev_stop (EV_A_ (W)w); 3421 ev_stop (EV_A_ (W)w);
2887 3422
2888 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
2889} 3424}
3425#endif
2890 3426
2891#if EV_EMBED_ENABLE 3427#if EV_EMBED_ENABLE
2892void noinline 3428void noinline
2893ev_embed_sweep (EV_P_ ev_embed *w) 3429ev_embed_sweep (EV_P_ ev_embed *w)
2894{ 3430{
… …
2910embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3446embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911{ 3447{
2912 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3448 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913 3449
2914 { 3450 {
2915 struct ev_loop *loop = w->other; 3451 EV_P = w->other;
2916 3452
2917 while (fdchangecnt) 3453 while (fdchangecnt)
2918 { 3454 {
2919 fd_reify (EV_A); 3455 fd_reify (EV_A);
2920 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3456 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2928 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3464 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929 3465
2930 ev_embed_stop (EV_A_ w); 3466 ev_embed_stop (EV_A_ w);
2931 3467
2932 { 3468 {
2933 struct ev_loop *loop = w->other; 3469 EV_P = w->other;
2934 3470
2935 ev_loop_fork (EV_A); 3471 ev_loop_fork (EV_A);
2936 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3472 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2937 } 3473 }
2938 3474
… …
2952{ 3488{
2953 if (expect_false (ev_is_active (w))) 3489 if (expect_false (ev_is_active (w)))
2954 return; 3490 return;
2955 3491
2956 { 3492 {
2957 struct ev_loop *loop = w->other; 3493 EV_P = w->other;
2958 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3494 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3495 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960 } 3496 }
2961 3497
2962 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
… …
2989 3525
2990 ev_io_stop (EV_A_ &w->io); 3526 ev_io_stop (EV_A_ &w->io);
2991 ev_prepare_stop (EV_A_ &w->prepare); 3527 ev_prepare_stop (EV_A_ &w->prepare);
2992 ev_fork_stop (EV_A_ &w->fork); 3528 ev_fork_stop (EV_A_ &w->fork);
2993 3529
3530 ev_stop (EV_A_ (W)w);
3531
2994 EV_FREQUENT_CHECK; 3532 EV_FREQUENT_CHECK;
2995} 3533}
2996#endif 3534#endif
2997 3535
2998#if EV_FORK_ENABLE 3536#if EV_FORK_ENABLE
… …
3074 3612
3075void 3613void
3076ev_async_send (EV_P_ ev_async *w) 3614ev_async_send (EV_P_ ev_async *w)
3077{ 3615{
3078 w->sent = 1; 3616 w->sent = 1;
3079 evpipe_write (EV_A_ &gotasync); 3617 evpipe_write (EV_A_ &async_pending);
3080} 3618}
3081#endif 3619#endif
3082 3620
3083/*****************************************************************************/ 3621/*****************************************************************************/
3084 3622
… …
3124{ 3662{
3125 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3663 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3126 3664
3127 if (expect_false (!once)) 3665 if (expect_false (!once))
3128 { 3666 {
3129 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3667 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3130 return; 3668 return;
3131 } 3669 }
3132 3670
3133 once->cb = cb; 3671 once->cb = cb;
3134 once->arg = arg; 3672 once->arg = arg;
… …
3146 ev_timer_set (&once->to, timeout, 0.); 3684 ev_timer_set (&once->to, timeout, 0.);
3147 ev_timer_start (EV_A_ &once->to); 3685 ev_timer_start (EV_A_ &once->to);
3148 } 3686 }
3149} 3687}
3150 3688
3689/*****************************************************************************/
3690
3691#if EV_WALK_ENABLE
3692void
3693ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3694{
3695 int i, j;
3696 ev_watcher_list *wl, *wn;
3697
3698 if (types & (EV_IO | EV_EMBED))
3699 for (i = 0; i < anfdmax; ++i)
3700 for (wl = anfds [i].head; wl; )
3701 {
3702 wn = wl->next;
3703
3704#if EV_EMBED_ENABLE
3705 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3706 {
3707 if (types & EV_EMBED)
3708 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3709 }
3710 else
3711#endif
3712#if EV_USE_INOTIFY
3713 if (ev_cb ((ev_io *)wl) == infy_cb)
3714 ;
3715 else
3716#endif
3717 if ((ev_io *)wl != &pipe_w)
3718 if (types & EV_IO)
3719 cb (EV_A_ EV_IO, wl);
3720
3721 wl = wn;
3722 }
3723
3724 if (types & (EV_TIMER | EV_STAT))
3725 for (i = timercnt + HEAP0; i-- > HEAP0; )
3726#if EV_STAT_ENABLE
3727 /*TODO: timer is not always active*/
3728 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3729 {
3730 if (types & EV_STAT)
3731 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3732 }
3733 else
3734#endif
3735 if (types & EV_TIMER)
3736 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3737
3738#if EV_PERIODIC_ENABLE
3739 if (types & EV_PERIODIC)
3740 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3741 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3742#endif
3743
3744#if EV_IDLE_ENABLE
3745 if (types & EV_IDLE)
3746 for (j = NUMPRI; i--; )
3747 for (i = idlecnt [j]; i--; )
3748 cb (EV_A_ EV_IDLE, idles [j][i]);
3749#endif
3750
3751#if EV_FORK_ENABLE
3752 if (types & EV_FORK)
3753 for (i = forkcnt; i--; )
3754 if (ev_cb (forks [i]) != embed_fork_cb)
3755 cb (EV_A_ EV_FORK, forks [i]);
3756#endif
3757
3758#if EV_ASYNC_ENABLE
3759 if (types & EV_ASYNC)
3760 for (i = asynccnt; i--; )
3761 cb (EV_A_ EV_ASYNC, asyncs [i]);
3762#endif
3763
3764#if EV_PREPARE_ENABLE
3765 if (types & EV_PREPARE)
3766 for (i = preparecnt; i--; )
3767# if EV_EMBED_ENABLE
3768 if (ev_cb (prepares [i]) != embed_prepare_cb)
3769# endif
3770 cb (EV_A_ EV_PREPARE, prepares [i]);
3771#endif
3772
3773#if EV_CHECK_ENABLE
3774 if (types & EV_CHECK)
3775 for (i = checkcnt; i--; )
3776 cb (EV_A_ EV_CHECK, checks [i]);
3777#endif
3778
3779#if EV_SIGNAL_ENABLE
3780 if (types & EV_SIGNAL)
3781 for (i = 0; i < EV_NSIG - 1; ++i)
3782 for (wl = signals [i].head; wl; )
3783 {
3784 wn = wl->next;
3785 cb (EV_A_ EV_SIGNAL, wl);
3786 wl = wn;
3787 }
3788#endif
3789
3790#if EV_CHILD_ENABLE
3791 if (types & EV_CHILD)
3792 for (i = (EV_PID_HASHSIZE); i--; )
3793 for (wl = childs [i]; wl; )
3794 {
3795 wn = wl->next;
3796 cb (EV_A_ EV_CHILD, wl);
3797 wl = wn;
3798 }
3799#endif
3800/* EV_STAT 0x00001000 /* stat data changed */
3801/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3802}
3803#endif
3804
3151#if EV_MULTIPLICITY 3805#if EV_MULTIPLICITY
3152 #include "ev_wrap.h" 3806 #include "ev_wrap.h"
3153#endif 3807#endif
3154 3808
3155#ifdef __cplusplus 3809#ifdef __cplusplus

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