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Comparing libev/ev.c (file contents):
Revision 1.259 by root, Mon Sep 8 13:14:23 2008 UTC vs.
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
74# endif 98# endif
75 99
100# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
89# endif
90# endif 107# endif
91 108
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
95# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
98# endif 116# endif
99 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
106# endif 125# endif
107 126
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
111# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
114# endif 134# endif
115 135
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
122# endif 143# endif
123 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
160# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 194# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
164# endif 197# endif
198# undef EV_AVOID_STDIO
165#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
166 208
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
238
239#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else
243# define EV_USE_CLOCK_SYSCALL 0
244# endif
245#endif
168 246
169#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 250# else
173# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
174# endif 252# endif
175#endif 253#endif
176 254
177#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 257#endif
180 258
181#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 262# else
185# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
186# endif 264# endif
187#endif 265#endif
188 266
189#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 269#endif
192 270
193#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
194# ifdef _WIN32 272# ifdef _WIN32
195# define EV_USE_POLL 0 273# define EV_USE_POLL 0
196# else 274# else
197# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 276# endif
199#endif 277#endif
200 278
201#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 282# else
205# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
206# endif 284# endif
207#endif 285#endif
208 286
… …
214# define EV_USE_PORT 0 292# define EV_USE_PORT 0
215#endif 293#endif
216 294
217#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 298# else
221# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
222# endif 300# endif
223#endif 301#endif
224 302
225#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 305#endif
232 306
233#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 309#endif
240 310
241#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 314# else
245# 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
246# endif 324# endif
247#endif 325#endif
248 326
249#if 0 /* debugging */ 327#if 0 /* debugging */
250# define EV_VERIFY 3 328# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
253#endif 331#endif
254 332
255#ifndef EV_VERIFY 333#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 335#endif
258 336
259#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 339#endif
262 340
263#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 357#endif
266 358
267/* 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
268 366
269#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
272#endif 370#endif
… …
286# include <sys/select.h> 384# include <sys/select.h>
287# endif 385# endif
288#endif 386#endif
289 387
290#if EV_USE_INOTIFY 388#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h>
291# include <sys/inotify.h> 391# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0
396# endif
292#endif 397#endif
293 398
294#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 400# include <winsock.h>
296#endif 401#endif
297 402
298#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
299/* 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 */
300# 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
301# ifdef __cplusplus 416# ifdef __cplusplus
302extern "C" { 417extern "C" {
303# endif 418# endif
304int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
305# ifdef __cplusplus 420# ifdef __cplusplus
306} 421}
307# endif 422# endif
308#endif 423#endif
309 424
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
310/**/ 454/**/
311 455
312#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 458#else
315# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
316#endif 460#endif
317 461
318/* 462/*
… …
325 */ 469 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327 471
328#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) */
329#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) */
330/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
331 474
332#if __GNUC__ >= 4 475#if __GNUC__ >= 4
333# define expect(expr,value) __builtin_expect ((expr),(value)) 476# define expect(expr,value) __builtin_expect ((expr),(value))
334# define noinline __attribute__ ((noinline)) 477# define noinline __attribute__ ((noinline))
335#else 478#else
… …
342 485
343#define expect_false(expr) expect ((expr) != 0, 0) 486#define expect_false(expr) expect ((expr) != 0, 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 487#define expect_true(expr) expect ((expr) != 0, 1)
345#define inline_size static inline 488#define inline_size static inline
346 489
347#if EV_MINIMAL 490#if EV_FEATURE_CODE
491# define inline_speed static inline
492#else
348# 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)
349#else 500#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif
355 503
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 504#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 505#define EMPTY2(a,b) /* used to suppress some warnings */
358 506
359typedef ev_watcher *W; 507typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 509typedef ev_watcher_time *WT;
362 510
363#define ev_active(w) ((W)(w))->active 511#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 512#define ev_at(w) ((WT)(w))->at
365 513
514#if EV_USE_REALTIME
515/* sig_atomic_t is used to avoid per-thread variables or locking but still */
516/* giving it a reasonably high chance of working on typical architectures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif
519
366#if EV_USE_MONOTONIC 520#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
522#endif
523
524#ifndef EV_FD_TO_WIN32_HANDLE
525# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
526#endif
527#ifndef EV_WIN32_HANDLE_TO_FD
528# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
529#endif
530#ifndef EV_WIN32_CLOSE_FD
531# define EV_WIN32_CLOSE_FD(fd) close (fd)
370#endif 532#endif
371 533
372#ifdef _WIN32 534#ifdef _WIN32
373# include "ev_win32.c" 535# include "ev_win32.c"
374#endif 536#endif
375 537
376/*****************************************************************************/ 538/*****************************************************************************/
377 539
540#if EV_AVOID_STDIO
541static void noinline
542ev_printerr (const char *msg)
543{
544 write (STDERR_FILENO, msg, strlen (msg));
545}
546#endif
547
378static void (*syserr_cb)(const char *msg); 548static void (*syserr_cb)(const char *msg);
379 549
380void 550void
381ev_set_syserr_cb (void (*cb)(const char *msg)) 551ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 552{
383 syserr_cb = cb; 553 syserr_cb = cb;
384} 554}
385 555
386static void noinline 556static void noinline
387syserr (const char *msg) 557ev_syserr (const char *msg)
388{ 558{
389 if (!msg) 559 if (!msg)
390 msg = "(libev) system error"; 560 msg = "(libev) system error";
391 561
392 if (syserr_cb) 562 if (syserr_cb)
393 syserr_cb (msg); 563 syserr_cb (msg);
394 else 564 else
395 { 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
396 perror (msg); 574 perror (msg);
575#endif
397 abort (); 576 abort ();
398 } 577 }
399} 578}
400 579
401static void * 580static void *
402ev_realloc_emul (void *ptr, long size) 581ev_realloc_emul (void *ptr, long size)
403{ 582{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
404 /* some systems, notably openbsd and darwin, fail to properly 586 /* some systems, notably openbsd and darwin, fail to properly
405 * 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
406 * the single unix specification, so work around them here. 588 * the single unix specification, so work around them here.
407 */ 589 */
408 590
409 if (size) 591 if (size)
410 return realloc (ptr, size); 592 return realloc (ptr, size);
411 593
412 free (ptr); 594 free (ptr);
413 return 0; 595 return 0;
596#endif
414} 597}
415 598
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 600
418void 601void
… …
426{ 609{
427 ptr = alloc (ptr, size); 610 ptr = alloc (ptr, size);
428 611
429 if (!ptr && size) 612 if (!ptr && size)
430 { 613 {
614#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n");
616#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
618#endif
432 abort (); 619 abort ();
433 } 620 }
434 621
435 return ptr; 622 return ptr;
436} 623}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 625#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 626#define ev_free(ptr) ev_realloc ((ptr), 0)
440 627
441/*****************************************************************************/ 628/*****************************************************************************/
442 629
630/* set in reify when reification needed */
631#define EV_ANFD_REIFY 1
632
633/* file descriptor info structure */
443typedef struct 634typedef struct
444{ 635{
445 WL head; 636 WL head;
446 unsigned char events; 637 unsigned char events; /* the events watched for */
638 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 640 unsigned char unused;
641#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif
448#if EV_SELECT_IS_WINSOCKET 644#if EV_SELECT_IS_WINSOCKET
449 SOCKET handle; 645 SOCKET handle;
450#endif 646#endif
451} ANFD; 647} ANFD;
452 648
649/* stores the pending event set for a given watcher */
453typedef struct 650typedef struct
454{ 651{
455 W w; 652 W w;
456 int events; 653 int events; /* the pending event set for the given watcher */
457} ANPENDING; 654} ANPENDING;
458 655
459#if EV_USE_INOTIFY 656#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 657/* hash table entry per inotify-id */
461typedef struct 658typedef struct
… …
464} ANFS; 661} ANFS;
465#endif 662#endif
466 663
467/* Heap Entry */ 664/* Heap Entry */
468#if EV_HEAP_CACHE_AT 665#if EV_HEAP_CACHE_AT
666 /* a heap element */
469 typedef struct { 667 typedef struct {
470 ev_tstamp at; 668 ev_tstamp at;
471 WT w; 669 WT w;
472 } ANHE; 670 } ANHE;
473 671
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 672 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 673 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 674 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 675#else
676 /* a heap element */
478 typedef WT ANHE; 677 typedef WT ANHE;
479 678
480 #define ANHE_w(he) (he) 679 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 680 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 681 #define ANHE_at_cache(he)
… …
506 705
507 static int ev_default_loop_ptr; 706 static int ev_default_loop_ptr;
508 707
509#endif 708#endif
510 709
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
511/*****************************************************************************/ 722/*****************************************************************************/
512 723
724#ifndef EV_HAVE_EV_TIME
513ev_tstamp 725ev_tstamp
514ev_time (void) 726ev_time (void)
515{ 727{
516#if EV_USE_REALTIME 728#if EV_USE_REALTIME
729 if (expect_true (have_realtime))
730 {
517 struct timespec ts; 731 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 732 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 733 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 734 }
735#endif
736
521 struct timeval tv; 737 struct timeval tv;
522 gettimeofday (&tv, 0); 738 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 739 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 740}
741#endif
526 742
527ev_tstamp inline_size 743inline_size ev_tstamp
528get_clock (void) 744get_clock (void)
529{ 745{
530#if EV_USE_MONOTONIC 746#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 747 if (expect_true (have_monotonic))
532 { 748 {
… …
566 782
567 tv.tv_sec = (time_t)delay; 783 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569 785
570 /* 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 */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 787 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 788 /* by older ones */
573 select (0, 0, 0, 0, &tv); 789 select (0, 0, 0, 0, &tv);
574#endif 790#endif
575 } 791 }
576} 792}
577 793
578/*****************************************************************************/ 794/*****************************************************************************/
579 795
580#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 */
581 797
582int 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
583array_nextsize (int elem, int cur, int cnt) 801array_nextsize (int elem, int cur, int cnt)
584{ 802{
585 int ncur = cur + 1; 803 int ncur = cur + 1;
586 804
587 do 805 do
… …
604array_realloc (int elem, void *base, int *cur, int cnt) 822array_realloc (int elem, void *base, int *cur, int cnt)
605{ 823{
606 *cur = array_nextsize (elem, *cur, cnt); 824 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 825 return ev_realloc (base, elem * *cur);
608} 826}
827
828#define array_init_zero(base,count) \
829 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 830
610#define array_needsize(type,base,cur,cnt,init) \ 831#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 832 if (expect_false ((cnt) > (cur))) \
612 { \ 833 { \
613 int ocur_ = (cur); \ 834 int ocur_ = (cur); \
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 846 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 847 }
627#endif 848#endif
628 849
629#define array_free(stem, idx) \ 850#define array_free(stem, idx) \
630 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
631 852
632/*****************************************************************************/ 853/*****************************************************************************/
854
855/* dummy callback for pending events */
856static void noinline
857pendingcb (EV_P_ ev_prepare *w, int revents)
858{
859}
633 860
634void noinline 861void noinline
635ev_feed_event (EV_P_ void *w, int revents) 862ev_feed_event (EV_P_ void *w, int revents)
636{ 863{
637 W w_ = (W)w; 864 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 873 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 874 pendings [pri][w_->pending - 1].events = revents;
648 } 875 }
649} 876}
650 877
651void 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
652queue_events (EV_P_ W *events, int eventcnt, int type) 894queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 895{
654 int i; 896 int i;
655 897
656 for (i = 0; i < eventcnt; ++i) 898 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 899 ev_feed_event (EV_A_ events [i], type);
658} 900}
659 901
660/*****************************************************************************/ 902/*****************************************************************************/
661 903
662void inline_size 904inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 905fd_event_nocheck (EV_P_ int fd, int revents)
677{ 906{
678 ANFD *anfd = anfds + fd; 907 ANFD *anfd = anfds + fd;
679 ev_io *w; 908 ev_io *w;
680 909
681 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)
… …
685 if (ev) 914 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 915 ev_feed_event (EV_A_ (W)w, ev);
687 } 916 }
688} 917}
689 918
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
690void 930void
691ev_feed_fd_event (EV_P_ int fd, int revents) 931ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 932{
693 if (fd >= 0 && fd < anfdmax) 933 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 934 fd_event_nocheck (EV_A_ fd, revents);
695} 935}
696 936
697void inline_size 937/* make sure the external fd watch events are in-sync */
938/* with the kernel/libev internal state */
939inline_size void
698fd_reify (EV_P) 940fd_reify (EV_P)
699{ 941{
700 int i; 942 int i;
701 943
702 for (i = 0; i < fdchangecnt; ++i) 944 for (i = 0; i < fdchangecnt; ++i)
… …
712 954
713#if EV_SELECT_IS_WINSOCKET 955#if EV_SELECT_IS_WINSOCKET
714 if (events) 956 if (events)
715 { 957 {
716 unsigned long arg; 958 unsigned long arg;
717 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else
720 anfd->handle = _get_osfhandle (fd);
721 #endif
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723 } 961 }
724#endif 962#endif
725 963
726 { 964 {
727 unsigned char o_events = anfd->events; 965 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify; 966 unsigned char o_reify = anfd->reify;
729 967
730 anfd->reify = 0; 968 anfd->reify = 0;
731 anfd->events = events; 969 anfd->events = events;
732 970
733 if (o_events != events || o_reify & EV_IOFDSET) 971 if (o_events != events || o_reify & EV__IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 972 backend_modify (EV_A_ fd, o_events, events);
735 } 973 }
736 } 974 }
737 975
738 fdchangecnt = 0; 976 fdchangecnt = 0;
739} 977}
740 978
741void inline_size 979/* something about the given fd changed */
980inline_size void
742fd_change (EV_P_ int fd, int flags) 981fd_change (EV_P_ int fd, int flags)
743{ 982{
744 unsigned char reify = anfds [fd].reify; 983 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 984 anfds [fd].reify |= flags;
746 985
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 990 fdchanges [fdchangecnt - 1] = fd;
752 } 991 }
753} 992}
754 993
755void inline_speed 994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void
756fd_kill (EV_P_ int fd) 996fd_kill (EV_P_ int fd)
757{ 997{
758 ev_io *w; 998 ev_io *w;
759 999
760 while ((w = (ev_io *)anfds [fd].head)) 1000 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1002 ev_io_stop (EV_A_ w);
763 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);
764 } 1004 }
765} 1005}
766 1006
767int inline_size 1007/* check whether the given fd is actually valid, for error recovery */
1008inline_size int
768fd_valid (int fd) 1009fd_valid (int fd)
769{ 1010{
770#ifdef _WIN32 1011#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1013#else
773 return fcntl (fd, F_GETFD) != -1; 1014 return fcntl (fd, F_GETFD) != -1;
774#endif 1015#endif
775} 1016}
776 1017
… …
794 1035
795 for (fd = anfdmax; fd--; ) 1036 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1037 if (anfds [fd].events)
797 { 1038 {
798 fd_kill (EV_A_ fd); 1039 fd_kill (EV_A_ fd);
799 return; 1040 break;
800 } 1041 }
801} 1042}
802 1043
803/* 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 */
804static void noinline 1045static void noinline
… …
808 1049
809 for (fd = 0; fd < anfdmax; ++fd) 1050 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1051 if (anfds [fd].events)
811 { 1052 {
812 anfds [fd].events = 0; 1053 anfds [fd].events = 0;
1054 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1055 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1056 }
815} 1057}
816 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
817/*****************************************************************************/ 1073/*****************************************************************************/
818 1074
819/* 1075/*
820 * 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
821 * 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
822 * the branching factor of the d-tree. 1078 * the branching factor of the d-tree.
823 */ 1079 */
824 1080
825/* 1081/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1090#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1091#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1092#define UPHEAP_DONE(p,k) ((p) == (k))
837 1093
838/* away from the root */ 1094/* away from the root */
839void inline_speed 1095inline_speed void
840downheap (ANHE *heap, int N, int k) 1096downheap (ANHE *heap, int N, int k)
841{ 1097{
842 ANHE he = heap [k]; 1098 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1099 ANHE *E = heap + N + HEAP0;
844 1100
… …
884#define HEAP0 1 1140#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1141#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1142#define UPHEAP_DONE(p,k) (!(p))
887 1143
888/* away from the root */ 1144/* away from the root */
889void inline_speed 1145inline_speed void
890downheap (ANHE *heap, int N, int k) 1146downheap (ANHE *heap, int N, int k)
891{ 1147{
892 ANHE he = heap [k]; 1148 ANHE he = heap [k];
893 1149
894 for (;;) 1150 for (;;)
895 { 1151 {
896 int c = k << 1; 1152 int c = k << 1;
897 1153
898 if (c > N + HEAP0 - 1) 1154 if (c >= N + HEAP0)
899 break; 1155 break;
900 1156
901 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])
902 ? 1 : 0; 1158 ? 1 : 0;
903 1159
… …
914 ev_active (ANHE_w (he)) = k; 1170 ev_active (ANHE_w (he)) = k;
915} 1171}
916#endif 1172#endif
917 1173
918/* towards the root */ 1174/* towards the root */
919void inline_speed 1175inline_speed void
920upheap (ANHE *heap, int k) 1176upheap (ANHE *heap, int k)
921{ 1177{
922 ANHE he = heap [k]; 1178 ANHE he = heap [k];
923 1179
924 for (;;) 1180 for (;;)
… …
935 1191
936 heap [k] = he; 1192 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1193 ev_active (ANHE_w (he)) = k;
938} 1194}
939 1195
940void inline_size 1196/* move an element suitably so it is in a correct place */
1197inline_size void
941adjustheap (ANHE *heap, int N, int k) 1198adjustheap (ANHE *heap, int N, int k)
942{ 1199{
943 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)]))
944 upheap (heap, k); 1201 upheap (heap, k);
945 else 1202 else
946 downheap (heap, N, k); 1203 downheap (heap, N, k);
947} 1204}
948 1205
949/* 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 */
950void inline_size 1207inline_size void
951reheap (ANHE *heap, int N) 1208reheap (ANHE *heap, int N)
952{ 1209{
953 int i; 1210 int i;
954 1211
955 /* 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 */
… …
958 upheap (heap, i + HEAP0); 1215 upheap (heap, i + HEAP0);
959} 1216}
960 1217
961/*****************************************************************************/ 1218/*****************************************************************************/
962 1219
1220/* associate signal watchers to a signal signal */
963typedef struct 1221typedef struct
964{ 1222{
1223 EV_ATOMIC_T pending;
1224#if EV_MULTIPLICITY
1225 EV_P;
1226#endif
965 WL head; 1227 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1228} ANSIG;
968 1229
969static ANSIG *signals; 1230static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1231
986/*****************************************************************************/ 1232/*****************************************************************************/
987 1233
988void inline_speed 1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1235
1000static void noinline 1236static void noinline
1001evpipe_init (EV_P) 1237evpipe_init (EV_P)
1002{ 1238{
1003 if (!ev_is_active (&pipeev)) 1239 if (!ev_is_active (&pipe_w))
1004 { 1240 {
1005#if EV_USE_EVENTFD 1241# if EV_USE_EVENTFD
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1244 evfd = eventfd (0, 0);
1245
1246 if (evfd >= 0)
1007 { 1247 {
1008 evpipe [0] = -1; 1248 evpipe [0] = -1;
1009 fd_intern (evfd); 1249 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1250 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1251 }
1012 else 1252 else
1013#endif 1253# endif
1014 { 1254 {
1015 while (pipe (evpipe)) 1255 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1256 ev_syserr ("(libev) error creating signal/async pipe");
1017 1257
1018 fd_intern (evpipe [0]); 1258 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1259 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1260 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1261 }
1022 1262
1023 ev_io_start (EV_A_ &pipeev); 1263 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1265 }
1026} 1266}
1027 1267
1028void inline_size 1268inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1270{
1031 if (!*flag) 1271 if (!*flag)
1032 { 1272 {
1033 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;
1034 1275
1035 *flag = 1; 1276 *flag = 1;
1036 1277
1037#if EV_USE_EVENTFD 1278#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1279 if (evfd >= 0)
… …
1040 uint64_t counter = 1; 1281 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1282 write (evfd, &counter, sizeof (uint64_t));
1042 } 1283 }
1043 else 1284 else
1044#endif 1285#endif
1045 write (evpipe [1], &old_errno, 1); 1286 write (evpipe [1], &dummy, 1);
1046 1287
1047 errno = old_errno; 1288 errno = old_errno;
1048 } 1289 }
1049} 1290}
1050 1291
1292/* called whenever the libev signal pipe */
1293/* got some events (signal, async) */
1051static void 1294static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1295pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1296{
1297 int i;
1298
1054#if EV_USE_EVENTFD 1299#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1300 if (evfd >= 0)
1056 { 1301 {
1057 uint64_t counter; 1302 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1303 read (evfd, &counter, sizeof (uint64_t));
… …
1062 { 1307 {
1063 char dummy; 1308 char dummy;
1064 read (evpipe [0], &dummy, 1); 1309 read (evpipe [0], &dummy, 1);
1065 } 1310 }
1066 1311
1067 if (gotsig && ev_is_default_loop (EV_A)) 1312 if (sig_pending)
1068 { 1313 {
1069 int signum; 1314 sig_pending = 0;
1070 gotsig = 0;
1071 1315
1072 for (signum = signalmax; signum--; ) 1316 for (i = EV_NSIG - 1; i--; )
1073 if (signals [signum].gotsig) 1317 if (expect_false (signals [i].pending))
1074 ev_feed_signal_event (EV_A_ signum + 1); 1318 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1319 }
1076 1320
1077#if EV_ASYNC_ENABLE 1321#if EV_ASYNC_ENABLE
1078 if (gotasync) 1322 if (async_pending)
1079 { 1323 {
1080 int i; 1324 async_pending = 0;
1081 gotasync = 0;
1082 1325
1083 for (i = asynccnt; i--; ) 1326 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1327 if (asyncs [i]->sent)
1085 { 1328 {
1086 asyncs [i]->sent = 0; 1329 asyncs [i]->sent = 0;
… …
1094 1337
1095static void 1338static void
1096ev_sighandler (int signum) 1339ev_sighandler (int signum)
1097{ 1340{
1098#if EV_MULTIPLICITY 1341#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct; 1342 EV_P = signals [signum - 1].loop;
1100#endif 1343#endif
1101 1344
1102#if _WIN32 1345#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1346 signal (signum, ev_sighandler);
1104#endif 1347#endif
1105 1348
1106 signals [signum - 1].gotsig = 1; 1349 signals [signum - 1].pending = 1;
1107 evpipe_write (EV_A_ &gotsig); 1350 evpipe_write (EV_A_ &sig_pending);
1108} 1351}
1109 1352
1110void noinline 1353void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1354ev_feed_signal_event (EV_P_ int signum)
1112{ 1355{
1113 WL w; 1356 WL w;
1114 1357
1358 if (expect_false (signum <= 0 || signum > EV_NSIG))
1359 return;
1360
1361 --signum;
1362
1115#if EV_MULTIPLICITY 1363#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1364 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1365 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1366
1119 --signum; 1367 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1368 return;
1369#endif
1123 1370
1124 signals [signum].gotsig = 0; 1371 signals [signum].pending = 0;
1125 1372
1126 for (w = signals [signum].head; w; w = w->next) 1373 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1374 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1375}
1129 1376
1377#if EV_USE_SIGNALFD
1378static void
1379sigfdcb (EV_P_ ev_io *iow, int revents)
1380{
1381 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1382
1383 for (;;)
1384 {
1385 ssize_t res = read (sigfd, si, sizeof (si));
1386
1387 /* not ISO-C, as res might be -1, but works with SuS */
1388 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1389 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1390
1391 if (res < (ssize_t)sizeof (si))
1392 break;
1393 }
1394}
1395#endif
1396
1397#endif
1398
1130/*****************************************************************************/ 1399/*****************************************************************************/
1131 1400
1401#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1402static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1403
1136static ev_signal childev; 1404static ev_signal childev;
1137 1405
1138#ifndef WIFCONTINUED 1406#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1407# define WIFCONTINUED(status) 0
1140#endif 1408#endif
1141 1409
1142void inline_speed 1410/* handle a single child status event */
1411inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1412child_reap (EV_P_ int chain, int pid, int status)
1144{ 1413{
1145 ev_child *w; 1414 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1415 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1416
1148 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1417 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1149 { 1418 {
1150 if ((w->pid == pid || !w->pid) 1419 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1420 && (!traced || (w->flags & 1)))
1152 { 1421 {
1153 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1422 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1160 1429
1161#ifndef WCONTINUED 1430#ifndef WCONTINUED
1162# define WCONTINUED 0 1431# define WCONTINUED 0
1163#endif 1432#endif
1164 1433
1434/* called on sigchld etc., calls waitpid */
1165static void 1435static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1436childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1437{
1168 int pid, status; 1438 int pid, status;
1169 1439
… …
1177 /* make sure we are called again until all children have been reaped */ 1447 /* make sure we are called again until all children have been reaped */
1178 /* we need to do it this way so that the callback gets called before we continue */ 1448 /* we need to do it this way so that the callback gets called before we continue */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1449 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 1450
1181 child_reap (EV_A_ pid, pid, status); 1451 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 1452 if ((EV_PID_HASHSIZE) > 1)
1183 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1453 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1184} 1454}
1185 1455
1186#endif 1456#endif
1187 1457
… …
1250 /* kqueue is borked on everything but netbsd apparently */ 1520 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 1521 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 1522 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1523#endif
1254#ifdef __APPLE__ 1524#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1525 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 1526 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1527 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1528#endif
1529#ifdef __FreeBSD__
1530 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1257#endif 1531#endif
1258 1532
1259 return flags; 1533 return flags;
1260} 1534}
1261 1535
… …
1275ev_backend (EV_P) 1549ev_backend (EV_P)
1276{ 1550{
1277 return backend; 1551 return backend;
1278} 1552}
1279 1553
1554#if EV_FEATURE_API
1280unsigned int 1555unsigned int
1281ev_loop_count (EV_P) 1556ev_iteration (EV_P)
1282{ 1557{
1283 return loop_count; 1558 return loop_count;
1284} 1559}
1285 1560
1561unsigned int
1562ev_depth (EV_P)
1563{
1564 return loop_depth;
1565}
1566
1286void 1567void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 1569{
1289 io_blocktime = interval; 1570 io_blocktime = interval;
1290} 1571}
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1575{
1295 timeout_blocktime = interval; 1576 timeout_blocktime = interval;
1296} 1577}
1297 1578
1579void
1580ev_set_userdata (EV_P_ void *data)
1581{
1582 userdata = data;
1583}
1584
1585void *
1586ev_userdata (EV_P)
1587{
1588 return userdata;
1589}
1590
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1592{
1593 invoke_cb = invoke_pending_cb;
1594}
1595
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1597{
1598 release_cb = release;
1599 acquire_cb = acquire;
1600}
1601#endif
1602
1603/* initialise a loop structure, must be zero-initialised */
1298static void noinline 1604static void noinline
1299loop_init (EV_P_ unsigned int flags) 1605loop_init (EV_P_ unsigned int flags)
1300{ 1606{
1301 if (!backend) 1607 if (!backend)
1302 { 1608 {
1609#if EV_USE_REALTIME
1610 if (!have_realtime)
1611 {
1612 struct timespec ts;
1613
1614 if (!clock_gettime (CLOCK_REALTIME, &ts))
1615 have_realtime = 1;
1616 }
1617#endif
1618
1303#if EV_USE_MONOTONIC 1619#if EV_USE_MONOTONIC
1620 if (!have_monotonic)
1304 { 1621 {
1305 struct timespec ts; 1622 struct timespec ts;
1623
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1624 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1625 have_monotonic = 1;
1308 } 1626 }
1309#endif 1627#endif
1628
1629 /* pid check not overridable via env */
1630#ifndef _WIN32
1631 if (flags & EVFLAG_FORKCHECK)
1632 curpid = getpid ();
1633#endif
1634
1635 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS"));
1310 1639
1311 ev_rt_now = ev_time (); 1640 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1641 mn_now = get_clock ();
1313 now_floor = mn_now; 1642 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now; 1643 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending;
1646#endif
1315 1647
1316 io_blocktime = 0.; 1648 io_blocktime = 0.;
1317 timeout_blocktime = 0.; 1649 timeout_blocktime = 0.;
1318 backend = 0; 1650 backend = 0;
1319 backend_fd = -1; 1651 backend_fd = -1;
1320 gotasync = 0; 1652 sig_pending = 0;
1653#if EV_ASYNC_ENABLE
1654 async_pending = 0;
1655#endif
1321#if EV_USE_INOTIFY 1656#if EV_USE_INOTIFY
1322 fs_fd = -2; 1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323#endif 1658#endif
1324 1659#if EV_USE_SIGNALFD
1325 /* pid check not overridable via env */ 1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK)
1328 curpid = getpid ();
1329#endif 1661#endif
1330
1331 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 1662
1336 if (!(flags & 0x0000ffffU)) 1663 if (!(flags & 0x0000ffffU))
1337 flags |= ev_recommended_backends (); 1664 flags |= ev_recommended_backends ();
1338 1665
1339#if EV_USE_PORT 1666#if EV_USE_PORT
… …
1350#endif 1677#endif
1351#if EV_USE_SELECT 1678#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1679 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 1680#endif
1354 1681
1682 ev_prepare_init (&pending_w, pendingcb);
1683
1684#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 1685 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 1686 ev_set_priority (&pipe_w, EV_MAXPRI);
1687#endif
1357 } 1688 }
1358} 1689}
1359 1690
1691/* free up a loop structure */
1360static void noinline 1692static void noinline
1361loop_destroy (EV_P) 1693loop_destroy (EV_P)
1362{ 1694{
1363 int i; 1695 int i;
1364 1696
1365 if (ev_is_active (&pipeev)) 1697 if (ev_is_active (&pipe_w))
1366 { 1698 {
1367 ev_ref (EV_A); /* signal watcher */ 1699 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 1700 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 1701
1370#if EV_USE_EVENTFD 1702#if EV_USE_EVENTFD
1371 if (evfd >= 0) 1703 if (evfd >= 0)
1372 close (evfd); 1704 close (evfd);
1373#endif 1705#endif
1374 1706
1375 if (evpipe [0] >= 0) 1707 if (evpipe [0] >= 0)
1376 { 1708 {
1377 close (evpipe [0]); 1709 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 1710 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 1711 }
1380 } 1712 }
1713
1714#if EV_USE_SIGNALFD
1715 if (ev_is_active (&sigfd_w))
1716 close (sigfd);
1717#endif
1381 1718
1382#if EV_USE_INOTIFY 1719#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 1720 if (fs_fd >= 0)
1384 close (fs_fd); 1721 close (fs_fd);
1385#endif 1722#endif
… …
1409#if EV_IDLE_ENABLE 1746#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 1747 array_free (idle, [i]);
1411#endif 1748#endif
1412 } 1749 }
1413 1750
1414 ev_free (anfds); anfdmax = 0; 1751 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 1752
1416 /* have to use the microsoft-never-gets-it-right macro */ 1753 /* have to use the microsoft-never-gets-it-right macro */
1754 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 1755 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1756 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1757#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1758 array_free (periodic, EMPTY);
1421#endif 1759#endif
… …
1430 1768
1431 backend = 0; 1769 backend = 0;
1432} 1770}
1433 1771
1434#if EV_USE_INOTIFY 1772#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1773inline_size void infy_fork (EV_P);
1436#endif 1774#endif
1437 1775
1438void inline_size 1776inline_size void
1439loop_fork (EV_P) 1777loop_fork (EV_P)
1440{ 1778{
1441#if EV_USE_PORT 1779#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1780 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1781#endif
… …
1449#endif 1787#endif
1450#if EV_USE_INOTIFY 1788#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 1789 infy_fork (EV_A);
1452#endif 1790#endif
1453 1791
1454 if (ev_is_active (&pipeev)) 1792 if (ev_is_active (&pipe_w))
1455 { 1793 {
1456 /* this "locks" the handlers against writing to the pipe */ 1794 /* this "locks" the handlers against writing to the pipe */
1457 /* while we modify the fd vars */ 1795 /* while we modify the fd vars */
1458 gotsig = 1; 1796 sig_pending = 1;
1459#if EV_ASYNC_ENABLE 1797#if EV_ASYNC_ENABLE
1460 gotasync = 1; 1798 async_pending = 1;
1461#endif 1799#endif
1462 1800
1463 ev_ref (EV_A); 1801 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 1802 ev_io_stop (EV_A_ &pipe_w);
1465 1803
1466#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1467 if (evfd >= 0) 1805 if (evfd >= 0)
1468 close (evfd); 1806 close (evfd);
1469#endif 1807#endif
1470 1808
1471 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1472 { 1810 {
1473 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 1813 }
1476 1814
1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 1816 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 1817 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 1818 pipecb (EV_A_ &pipe_w, EV_READ);
1819#endif
1480 } 1820 }
1481 1821
1482 postfork = 0; 1822 postfork = 0;
1483} 1823}
1484 1824
1485#if EV_MULTIPLICITY 1825#if EV_MULTIPLICITY
1486 1826
1487struct ev_loop * 1827struct ev_loop *
1488ev_loop_new (unsigned int flags) 1828ev_loop_new (unsigned int flags)
1489{ 1829{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 1831
1492 memset (loop, 0, sizeof (struct ev_loop)); 1832 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 1833 loop_init (EV_A_ flags);
1495 1834
1496 if (ev_backend (EV_A)) 1835 if (ev_backend (EV_A))
1497 return loop; 1836 return EV_A;
1498 1837
1499 return 0; 1838 return 0;
1500} 1839}
1501 1840
1502void 1841void
… …
1509void 1848void
1510ev_loop_fork (EV_P) 1849ev_loop_fork (EV_P)
1511{ 1850{
1512 postfork = 1; /* must be in line with ev_default_fork */ 1851 postfork = 1; /* must be in line with ev_default_fork */
1513} 1852}
1853#endif /* multiplicity */
1514 1854
1515#if EV_VERIFY 1855#if EV_VERIFY
1516static void noinline 1856static void noinline
1517verify_watcher (EV_P_ W w) 1857verify_watcher (EV_P_ W w)
1518{ 1858{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1860
1521 if (w->pending) 1861 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 1863}
1524 1864
1525static void noinline 1865static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1866verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1867{
1528 int i; 1868 int i;
1529 1869
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1870 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1871 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1872 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1873 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1874 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 1875
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1877 }
1538} 1878}
1539 1879
1540static void noinline 1880static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1881array_verify (EV_P_ W *ws, int cnt)
1542{ 1882{
1543 while (cnt--) 1883 while (cnt--)
1544 { 1884 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1886 verify_watcher (EV_A_ ws [cnt]);
1547 } 1887 }
1548} 1888}
1549#endif 1889#endif
1550 1890
1891#if EV_FEATURE_API
1551void 1892void
1552ev_loop_verify (EV_P) 1893ev_verify (EV_P)
1553{ 1894{
1554#if EV_VERIFY 1895#if EV_VERIFY
1555 int i; 1896 int i;
1556 WL w; 1897 WL w;
1557 1898
1558 assert (activecnt >= -1); 1899 assert (activecnt >= -1);
1559 1900
1560 assert (fdchangemax >= fdchangecnt); 1901 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1902 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1903 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1904
1564 assert (anfdmax >= 0); 1905 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1906 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1907 for (w = anfds [i].head; w; w = w->next)
1567 { 1908 {
1568 verify_watcher (EV_A_ (W)w); 1909 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1910 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1911 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 1912 }
1572 1913
1573 assert (timermax >= timercnt); 1914 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 1915 verify_heap (EV_A_ timers, timercnt);
1575 1916
… …
1596#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 1938 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 1939 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 1940#endif
1600 1941
1942#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 1943 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 1944 array_verify (EV_A_ (W *)prepares, preparecnt);
1945#endif
1603 1946
1947#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 1948 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 1949 array_verify (EV_A_ (W *)checks, checkcnt);
1950#endif
1606 1951
1607# if 0 1952# if 0
1953#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1954 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1955 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1956#endif
1610# endif 1957# endif
1611#endif 1958#endif
1612} 1959}
1613 1960#endif
1614#endif /* multiplicity */
1615 1961
1616#if EV_MULTIPLICITY 1962#if EV_MULTIPLICITY
1617struct ev_loop * 1963struct ev_loop *
1618ev_default_loop_init (unsigned int flags) 1964ev_default_loop_init (unsigned int flags)
1619#else 1965#else
… …
1622#endif 1968#endif
1623{ 1969{
1624 if (!ev_default_loop_ptr) 1970 if (!ev_default_loop_ptr)
1625 { 1971 {
1626#if EV_MULTIPLICITY 1972#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1973 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 1974#else
1629 ev_default_loop_ptr = 1; 1975 ev_default_loop_ptr = 1;
1630#endif 1976#endif
1631 1977
1632 loop_init (EV_A_ flags); 1978 loop_init (EV_A_ flags);
1633 1979
1634 if (ev_backend (EV_A)) 1980 if (ev_backend (EV_A))
1635 { 1981 {
1636#ifndef _WIN32 1982#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 1983 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 1984 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 1985 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1986 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 1987#endif
… …
1649 1995
1650void 1996void
1651ev_default_destroy (void) 1997ev_default_destroy (void)
1652{ 1998{
1653#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1655#endif 2001#endif
1656 2002
1657#ifndef _WIN32 2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
1658 ev_ref (EV_A); /* child watcher */ 2006 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev); 2007 ev_signal_stop (EV_A_ &childev);
1660#endif 2008#endif
1661 2009
1662 loop_destroy (EV_A); 2010 loop_destroy (EV_A);
… …
1664 2012
1665void 2013void
1666ev_default_fork (void) 2014ev_default_fork (void)
1667{ 2015{
1668#if EV_MULTIPLICITY 2016#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr; 2017 EV_P = ev_default_loop_ptr;
1670#endif 2018#endif
1671 2019
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2020 postfork = 1; /* must be in line with ev_loop_fork */
1674} 2021}
1675 2022
1676/*****************************************************************************/ 2023/*****************************************************************************/
1677 2024
1678void 2025void
1679ev_invoke (EV_P_ void *w, int revents) 2026ev_invoke (EV_P_ void *w, int revents)
1680{ 2027{
1681 EV_CB_INVOKE ((W)w, revents); 2028 EV_CB_INVOKE ((W)w, revents);
1682} 2029}
1683 2030
1684void inline_speed 2031unsigned int
1685call_pending (EV_P) 2032ev_pending_count (EV_P)
2033{
2034 int pri;
2035 unsigned int count = 0;
2036
2037 for (pri = NUMPRI; pri--; )
2038 count += pendingcnt [pri];
2039
2040 return count;
2041}
2042
2043void noinline
2044ev_invoke_pending (EV_P)
1686{ 2045{
1687 int pri; 2046 int pri;
1688 2047
1689 for (pri = NUMPRI; pri--; ) 2048 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2049 while (pendingcnt [pri])
1691 { 2050 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2052
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
1697 2055
1698 p->w->pending = 0; 2056 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2057 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2058 EV_FREQUENT_CHECK;
1701 }
1702 } 2059 }
1703} 2060}
1704 2061
1705#if EV_IDLE_ENABLE 2062#if EV_IDLE_ENABLE
1706void inline_size 2063/* make idle watchers pending. this handles the "call-idle */
2064/* only when higher priorities are idle" logic */
2065inline_size void
1707idle_reify (EV_P) 2066idle_reify (EV_P)
1708{ 2067{
1709 if (expect_false (idleall)) 2068 if (expect_false (idleall))
1710 { 2069 {
1711 int pri; 2070 int pri;
… …
1723 } 2082 }
1724 } 2083 }
1725} 2084}
1726#endif 2085#endif
1727 2086
1728void inline_size 2087/* make timers pending */
2088inline_size void
1729timers_reify (EV_P) 2089timers_reify (EV_P)
1730{ 2090{
1731 EV_FREQUENT_CHECK; 2091 EV_FREQUENT_CHECK;
1732 2092
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2093 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2094 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2095 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 2096 {
2097 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2098
2099 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2100
2101 /* first reschedule or stop timer */
2102 if (w->repeat)
2103 {
1742 ev_at (w) += w->repeat; 2104 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2105 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2106 ev_at (w) = mn_now;
1745 2107
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2108 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2109
1748 ANHE_at_cache (timers [HEAP0]); 2110 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2111 downheap (timers, timercnt, HEAP0);
2112 }
2113 else
2114 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2115
2116 EV_FREQUENT_CHECK;
2117 feed_reverse (EV_A_ (W)w);
1750 } 2118 }
1751 else 2119 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2120
1754 EV_FREQUENT_CHECK; 2121 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2122 }
1757} 2123}
1758 2124
1759#if EV_PERIODIC_ENABLE 2125#if EV_PERIODIC_ENABLE
1760void inline_size 2126/* make periodics pending */
2127inline_size void
1761periodics_reify (EV_P) 2128periodics_reify (EV_P)
1762{ 2129{
1763 EV_FREQUENT_CHECK; 2130 EV_FREQUENT_CHECK;
1764 2131
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2132 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2133 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2134 int feed_count = 0;
1768 2135
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2136 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2137 {
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2139
2140 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2141
2142 /* first reschedule or stop timer */
2143 if (w->reschedule_cb)
2144 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2145 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2146
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2147 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2148
1778 ANHE_at_cache (periodics [HEAP0]); 2149 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2150 downheap (periodics, periodiccnt, HEAP0);
2151 }
2152 else if (w->interval)
2153 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0);
2170 }
2171 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2173
2174 EV_FREQUENT_CHECK;
2175 feed_reverse (EV_A_ (W)w);
1780 } 2176 }
1781 else if (w->interval) 2177 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2178
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2179 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2180 }
1806} 2181}
1807 2182
2183/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2185static void noinline
1809periodics_reschedule (EV_P) 2186periodics_reschedule (EV_P)
1810{ 2187{
1811 int i; 2188 int i;
1812 2189
… …
1825 2202
1826 reheap (periodics, periodiccnt); 2203 reheap (periodics, periodiccnt);
1827} 2204}
1828#endif 2205#endif
1829 2206
1830void inline_speed 2207/* adjust all timers by a given offset */
2208static void noinline
2209timers_reschedule (EV_P_ ev_tstamp adjust)
2210{
2211 int i;
2212
2213 for (i = 0; i < timercnt; ++i)
2214 {
2215 ANHE *he = timers + i + HEAP0;
2216 ANHE_w (*he)->at += adjust;
2217 ANHE_at_cache (*he);
2218 }
2219}
2220
2221/* fetch new monotonic and realtime times from the kernel */
2222/* also detect if there was a timejump, and act accordingly */
2223inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2224time_update (EV_P_ ev_tstamp max_block)
1832{ 2225{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2226#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2227 if (expect_true (have_monotonic))
1837 { 2228 {
2229 int i;
1838 ev_tstamp odiff = rtmn_diff; 2230 ev_tstamp odiff = rtmn_diff;
1839 2231
1840 mn_now = get_clock (); 2232 mn_now = get_clock ();
1841 2233
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2234 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1868 ev_rt_now = ev_time (); 2260 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2261 mn_now = get_clock ();
1870 now_floor = mn_now; 2262 now_floor = mn_now;
1871 } 2263 }
1872 2264
2265 /* no timer adjustment, as the monotonic clock doesn't jump */
2266 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2267# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2268 periodics_reschedule (EV_A);
1875# endif 2269# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2270 }
1879 else 2271 else
1880#endif 2272#endif
1881 { 2273 {
1882 ev_rt_now = ev_time (); 2274 ev_rt_now = ev_time ();
1883 2275
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2276 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2277 {
2278 /* adjust timers. this is easy, as the offset is the same for all of them */
2279 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2280#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2281 periodics_reschedule (EV_A);
1888#endif 2282#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2283 }
1897 2284
1898 mn_now = ev_rt_now; 2285 mn_now = ev_rt_now;
1899 } 2286 }
1900} 2287}
1901 2288
1902void 2289void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914static int loop_done;
1915
1916void
1917ev_loop (EV_P_ int flags) 2290ev_loop (EV_P_ int flags)
1918{ 2291{
2292#if EV_FEATURE_API
2293 ++loop_depth;
2294#endif
2295
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2297
1919 loop_done = EVUNLOOP_CANCEL; 2298 loop_done = EVUNLOOP_CANCEL;
1920 2299
1921 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1922 2301
1923 do 2302 do
1924 { 2303 {
1925#if EV_VERIFY >= 2 2304#if EV_VERIFY >= 2
1926 ev_loop_verify (EV_A); 2305 ev_verify (EV_A);
1927#endif 2306#endif
1928 2307
1929#ifndef _WIN32 2308#ifndef _WIN32
1930 if (expect_false (curpid)) /* penalise the forking check even more */ 2309 if (expect_false (curpid)) /* penalise the forking check even more */
1931 if (expect_false (getpid () != curpid)) 2310 if (expect_false (getpid () != curpid))
… …
1939 /* we might have forked, so queue fork handlers */ 2318 /* we might have forked, so queue fork handlers */
1940 if (expect_false (postfork)) 2319 if (expect_false (postfork))
1941 if (forkcnt) 2320 if (forkcnt)
1942 { 2321 {
1943 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2322 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1944 call_pending (EV_A); 2323 EV_INVOKE_PENDING;
1945 } 2324 }
1946#endif 2325#endif
1947 2326
2327#if EV_PREPARE_ENABLE
1948 /* queue prepare watchers (and execute them) */ 2328 /* queue prepare watchers (and execute them) */
1949 if (expect_false (preparecnt)) 2329 if (expect_false (preparecnt))
1950 { 2330 {
1951 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2331 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1952 call_pending (EV_A); 2332 EV_INVOKE_PENDING;
1953 } 2333 }
2334#endif
1954 2335
1955 if (expect_false (!activecnt)) 2336 if (expect_false (loop_done))
1956 break; 2337 break;
1957 2338
1958 /* we might have forked, so reify kernel state if necessary */ 2339 /* we might have forked, so reify kernel state if necessary */
1959 if (expect_false (postfork)) 2340 if (expect_false (postfork))
1960 loop_fork (EV_A); 2341 loop_fork (EV_A);
… …
1967 ev_tstamp waittime = 0.; 2348 ev_tstamp waittime = 0.;
1968 ev_tstamp sleeptime = 0.; 2349 ev_tstamp sleeptime = 0.;
1969 2350
1970 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1971 { 2352 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
1972 /* update time to cancel out callback processing overhead */ 2356 /* update time to cancel out callback processing overhead */
1973 time_update (EV_A_ 1e100); 2357 time_update (EV_A_ 1e100);
1974 2358
1975 waittime = MAX_BLOCKTIME; 2359 waittime = MAX_BLOCKTIME;
1976 2360
… …
1986 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1987 if (waittime > to) waittime = to; 2371 if (waittime > to) waittime = to;
1988 } 2372 }
1989#endif 2373#endif
1990 2374
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */
1991 if (expect_false (waittime < timeout_blocktime)) 2376 if (expect_false (waittime < timeout_blocktime))
1992 waittime = timeout_blocktime; 2377 waittime = timeout_blocktime;
1993 2378
1994 sleeptime = waittime - backend_fudge; 2379 /* extra check because io_blocktime is commonly 0 */
1995
1996 if (expect_true (sleeptime > io_blocktime)) 2380 if (expect_false (io_blocktime))
1997 sleeptime = io_blocktime;
1998
1999 if (sleeptime)
2000 { 2381 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383
2384 if (sleeptime > waittime - backend_fudge)
2385 sleeptime = waittime - backend_fudge;
2386
2387 if (expect_true (sleeptime > 0.))
2388 {
2001 ev_sleep (sleeptime); 2389 ev_sleep (sleeptime);
2002 waittime -= sleeptime; 2390 waittime -= sleeptime;
2391 }
2003 } 2392 }
2004 } 2393 }
2005 2394
2395#if EV_FEATURE_API
2006 ++loop_count; 2396 ++loop_count;
2397#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2007 backend_poll (EV_A_ waittime); 2399 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2008 2401
2009 /* update ev_rt_now, do magic */ 2402 /* update ev_rt_now, do magic */
2010 time_update (EV_A_ waittime + sleeptime); 2403 time_update (EV_A_ waittime + sleeptime);
2011 } 2404 }
2012 2405
… …
2019#if EV_IDLE_ENABLE 2412#if EV_IDLE_ENABLE
2020 /* queue idle watchers unless other events are pending */ 2413 /* queue idle watchers unless other events are pending */
2021 idle_reify (EV_A); 2414 idle_reify (EV_A);
2022#endif 2415#endif
2023 2416
2417#if EV_CHECK_ENABLE
2024 /* queue check watchers, to be executed first */ 2418 /* queue check watchers, to be executed first */
2025 if (expect_false (checkcnt)) 2419 if (expect_false (checkcnt))
2026 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2420 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2421#endif
2027 2422
2028 call_pending (EV_A); 2423 EV_INVOKE_PENDING;
2029 } 2424 }
2030 while (expect_true ( 2425 while (expect_true (
2031 activecnt 2426 activecnt
2032 && !loop_done 2427 && !loop_done
2033 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2034 )); 2429 ));
2035 2430
2036 if (loop_done == EVUNLOOP_ONE) 2431 if (loop_done == EVUNLOOP_ONE)
2037 loop_done = EVUNLOOP_CANCEL; 2432 loop_done = EVUNLOOP_CANCEL;
2433
2434#if EV_FEATURE_API
2435 --loop_depth;
2436#endif
2038} 2437}
2039 2438
2040void 2439void
2041ev_unloop (EV_P_ int how) 2440ev_unloop (EV_P_ int how)
2042{ 2441{
2043 loop_done = how; 2442 loop_done = how;
2044} 2443}
2045 2444
2445void
2446ev_ref (EV_P)
2447{
2448 ++activecnt;
2449}
2450
2451void
2452ev_unref (EV_P)
2453{
2454 --activecnt;
2455}
2456
2457void
2458ev_now_update (EV_P)
2459{
2460 time_update (EV_A_ 1e100);
2461}
2462
2463void
2464ev_suspend (EV_P)
2465{
2466 ev_now_update (EV_A);
2467}
2468
2469void
2470ev_resume (EV_P)
2471{
2472 ev_tstamp mn_prev = mn_now;
2473
2474 ev_now_update (EV_A);
2475 timers_reschedule (EV_A_ mn_now - mn_prev);
2476#if EV_PERIODIC_ENABLE
2477 /* TODO: really do this? */
2478 periodics_reschedule (EV_A);
2479#endif
2480}
2481
2046/*****************************************************************************/ 2482/*****************************************************************************/
2483/* singly-linked list management, used when the expected list length is short */
2047 2484
2048void inline_size 2485inline_size void
2049wlist_add (WL *head, WL elem) 2486wlist_add (WL *head, WL elem)
2050{ 2487{
2051 elem->next = *head; 2488 elem->next = *head;
2052 *head = elem; 2489 *head = elem;
2053} 2490}
2054 2491
2055void inline_size 2492inline_size void
2056wlist_del (WL *head, WL elem) 2493wlist_del (WL *head, WL elem)
2057{ 2494{
2058 while (*head) 2495 while (*head)
2059 { 2496 {
2060 if (*head == elem) 2497 if (expect_true (*head == elem))
2061 { 2498 {
2062 *head = elem->next; 2499 *head = elem->next;
2063 return; 2500 break;
2064 } 2501 }
2065 2502
2066 head = &(*head)->next; 2503 head = &(*head)->next;
2067 } 2504 }
2068} 2505}
2069 2506
2070void inline_speed 2507/* internal, faster, version of ev_clear_pending */
2508inline_speed void
2071clear_pending (EV_P_ W w) 2509clear_pending (EV_P_ W w)
2072{ 2510{
2073 if (w->pending) 2511 if (w->pending)
2074 { 2512 {
2075 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2513 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2076 w->pending = 0; 2514 w->pending = 0;
2077 } 2515 }
2078} 2516}
2079 2517
2080int 2518int
… …
2084 int pending = w_->pending; 2522 int pending = w_->pending;
2085 2523
2086 if (expect_true (pending)) 2524 if (expect_true (pending))
2087 { 2525 {
2088 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2526 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2527 p->w = (W)&pending_w;
2089 w_->pending = 0; 2528 w_->pending = 0;
2090 p->w = 0;
2091 return p->events; 2529 return p->events;
2092 } 2530 }
2093 else 2531 else
2094 return 0; 2532 return 0;
2095} 2533}
2096 2534
2097void inline_size 2535inline_size void
2098pri_adjust (EV_P_ W w) 2536pri_adjust (EV_P_ W w)
2099{ 2537{
2100 int pri = w->priority; 2538 int pri = ev_priority (w);
2101 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2539 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2102 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2540 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2103 w->priority = pri; 2541 ev_set_priority (w, pri);
2104} 2542}
2105 2543
2106void inline_speed 2544inline_speed void
2107ev_start (EV_P_ W w, int active) 2545ev_start (EV_P_ W w, int active)
2108{ 2546{
2109 pri_adjust (EV_A_ w); 2547 pri_adjust (EV_A_ w);
2110 w->active = active; 2548 w->active = active;
2111 ev_ref (EV_A); 2549 ev_ref (EV_A);
2112} 2550}
2113 2551
2114void inline_size 2552inline_size void
2115ev_stop (EV_P_ W w) 2553ev_stop (EV_P_ W w)
2116{ 2554{
2117 ev_unref (EV_A); 2555 ev_unref (EV_A);
2118 w->active = 0; 2556 w->active = 0;
2119} 2557}
… …
2126 int fd = w->fd; 2564 int fd = w->fd;
2127 2565
2128 if (expect_false (ev_is_active (w))) 2566 if (expect_false (ev_is_active (w)))
2129 return; 2567 return;
2130 2568
2131 assert (("ev_io_start called with negative fd", fd >= 0)); 2569 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2570 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2132 2571
2133 EV_FREQUENT_CHECK; 2572 EV_FREQUENT_CHECK;
2134 2573
2135 ev_start (EV_A_ (W)w, 1); 2574 ev_start (EV_A_ (W)w, 1);
2136 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2137 wlist_add (&anfds[fd].head, (WL)w); 2576 wlist_add (&anfds[fd].head, (WL)w);
2138 2577
2139 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2578 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2140 w->events &= ~EV_IOFDSET; 2579 w->events &= ~EV__IOFDSET;
2141 2580
2142 EV_FREQUENT_CHECK; 2581 EV_FREQUENT_CHECK;
2143} 2582}
2144 2583
2145void noinline 2584void noinline
… …
2147{ 2586{
2148 clear_pending (EV_A_ (W)w); 2587 clear_pending (EV_A_ (W)w);
2149 if (expect_false (!ev_is_active (w))) 2588 if (expect_false (!ev_is_active (w)))
2150 return; 2589 return;
2151 2590
2152 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2591 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2153 2592
2154 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2155 2594
2156 wlist_del (&anfds[w->fd].head, (WL)w); 2595 wlist_del (&anfds[w->fd].head, (WL)w);
2157 ev_stop (EV_A_ (W)w); 2596 ev_stop (EV_A_ (W)w);
… …
2167 if (expect_false (ev_is_active (w))) 2606 if (expect_false (ev_is_active (w)))
2168 return; 2607 return;
2169 2608
2170 ev_at (w) += mn_now; 2609 ev_at (w) += mn_now;
2171 2610
2172 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2611 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2173 2612
2174 EV_FREQUENT_CHECK; 2613 EV_FREQUENT_CHECK;
2175 2614
2176 ++timercnt; 2615 ++timercnt;
2177 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2616 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2180 ANHE_at_cache (timers [ev_active (w)]); 2619 ANHE_at_cache (timers [ev_active (w)]);
2181 upheap (timers, ev_active (w)); 2620 upheap (timers, ev_active (w));
2182 2621
2183 EV_FREQUENT_CHECK; 2622 EV_FREQUENT_CHECK;
2184 2623
2185 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2624 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2186} 2625}
2187 2626
2188void noinline 2627void noinline
2189ev_timer_stop (EV_P_ ev_timer *w) 2628ev_timer_stop (EV_P_ ev_timer *w)
2190{ 2629{
… …
2195 EV_FREQUENT_CHECK; 2634 EV_FREQUENT_CHECK;
2196 2635
2197 { 2636 {
2198 int active = ev_active (w); 2637 int active = ev_active (w);
2199 2638
2200 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2639 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2201 2640
2202 --timercnt; 2641 --timercnt;
2203 2642
2204 if (expect_true (active < timercnt + HEAP0)) 2643 if (expect_true (active < timercnt + HEAP0))
2205 { 2644 {
2206 timers [active] = timers [timercnt + HEAP0]; 2645 timers [active] = timers [timercnt + HEAP0];
2207 adjustheap (timers, timercnt, active); 2646 adjustheap (timers, timercnt, active);
2208 } 2647 }
2209 } 2648 }
2210 2649
2211 EV_FREQUENT_CHECK;
2212
2213 ev_at (w) -= mn_now; 2650 ev_at (w) -= mn_now;
2214 2651
2215 ev_stop (EV_A_ (W)w); 2652 ev_stop (EV_A_ (W)w);
2653
2654 EV_FREQUENT_CHECK;
2216} 2655}
2217 2656
2218void noinline 2657void noinline
2219ev_timer_again (EV_P_ ev_timer *w) 2658ev_timer_again (EV_P_ ev_timer *w)
2220{ 2659{
… …
2238 } 2677 }
2239 2678
2240 EV_FREQUENT_CHECK; 2679 EV_FREQUENT_CHECK;
2241} 2680}
2242 2681
2682ev_tstamp
2683ev_timer_remaining (EV_P_ ev_timer *w)
2684{
2685 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2686}
2687
2243#if EV_PERIODIC_ENABLE 2688#if EV_PERIODIC_ENABLE
2244void noinline 2689void noinline
2245ev_periodic_start (EV_P_ ev_periodic *w) 2690ev_periodic_start (EV_P_ ev_periodic *w)
2246{ 2691{
2247 if (expect_false (ev_is_active (w))) 2692 if (expect_false (ev_is_active (w)))
… …
2249 2694
2250 if (w->reschedule_cb) 2695 if (w->reschedule_cb)
2251 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2252 else if (w->interval) 2697 else if (w->interval)
2253 { 2698 {
2254 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2255 /* this formula differs from the one in periodic_reify because we do not always round up */ 2700 /* this formula differs from the one in periodic_reify because we do not always round up */
2256 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2257 } 2702 }
2258 else 2703 else
2259 ev_at (w) = w->offset; 2704 ev_at (w) = w->offset;
… …
2267 ANHE_at_cache (periodics [ev_active (w)]); 2712 ANHE_at_cache (periodics [ev_active (w)]);
2268 upheap (periodics, ev_active (w)); 2713 upheap (periodics, ev_active (w));
2269 2714
2270 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2271 2716
2272 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2717 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2273} 2718}
2274 2719
2275void noinline 2720void noinline
2276ev_periodic_stop (EV_P_ ev_periodic *w) 2721ev_periodic_stop (EV_P_ ev_periodic *w)
2277{ 2722{
… …
2282 EV_FREQUENT_CHECK; 2727 EV_FREQUENT_CHECK;
2283 2728
2284 { 2729 {
2285 int active = ev_active (w); 2730 int active = ev_active (w);
2286 2731
2287 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2732 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2288 2733
2289 --periodiccnt; 2734 --periodiccnt;
2290 2735
2291 if (expect_true (active < periodiccnt + HEAP0)) 2736 if (expect_true (active < periodiccnt + HEAP0))
2292 { 2737 {
2293 periodics [active] = periodics [periodiccnt + HEAP0]; 2738 periodics [active] = periodics [periodiccnt + HEAP0];
2294 adjustheap (periodics, periodiccnt, active); 2739 adjustheap (periodics, periodiccnt, active);
2295 } 2740 }
2296 } 2741 }
2297 2742
2298 EV_FREQUENT_CHECK;
2299
2300 ev_stop (EV_A_ (W)w); 2743 ev_stop (EV_A_ (W)w);
2744
2745 EV_FREQUENT_CHECK;
2301} 2746}
2302 2747
2303void noinline 2748void noinline
2304ev_periodic_again (EV_P_ ev_periodic *w) 2749ev_periodic_again (EV_P_ ev_periodic *w)
2305{ 2750{
… …
2311 2756
2312#ifndef SA_RESTART 2757#ifndef SA_RESTART
2313# define SA_RESTART 0 2758# define SA_RESTART 0
2314#endif 2759#endif
2315 2760
2761#if EV_SIGNAL_ENABLE
2762
2316void noinline 2763void noinline
2317ev_signal_start (EV_P_ ev_signal *w) 2764ev_signal_start (EV_P_ ev_signal *w)
2318{ 2765{
2319#if EV_MULTIPLICITY
2320 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2321#endif
2322 if (expect_false (ev_is_active (w))) 2766 if (expect_false (ev_is_active (w)))
2323 return; 2767 return;
2324 2768
2325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2769 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2326 2770
2327 evpipe_init (EV_A); 2771#if EV_MULTIPLICITY
2772 assert (("libev: a signal must not be attached to two different loops",
2773 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2328 2774
2329 EV_FREQUENT_CHECK; 2775 signals [w->signum - 1].loop = EV_A;
2776#endif
2330 2777
2778 EV_FREQUENT_CHECK;
2779
2780#if EV_USE_SIGNALFD
2781 if (sigfd == -2)
2331 { 2782 {
2332#ifndef _WIN32 2783 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2333 sigset_t full, prev; 2784 if (sigfd < 0 && errno == EINVAL)
2334 sigfillset (&full); 2785 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2335 sigprocmask (SIG_SETMASK, &full, &prev);
2336#endif
2337 2786
2338 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2787 if (sigfd >= 0)
2788 {
2789 fd_intern (sigfd); /* doing it twice will not hurt */
2339 2790
2340#ifndef _WIN32 2791 sigemptyset (&sigfd_set);
2341 sigprocmask (SIG_SETMASK, &prev, 0); 2792
2342#endif 2793 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2794 ev_set_priority (&sigfd_w, EV_MAXPRI);
2795 ev_io_start (EV_A_ &sigfd_w);
2796 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2797 }
2343 } 2798 }
2799
2800 if (sigfd >= 0)
2801 {
2802 /* TODO: check .head */
2803 sigaddset (&sigfd_set, w->signum);
2804 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2805
2806 signalfd (sigfd, &sigfd_set, 0);
2807 }
2808#endif
2344 2809
2345 ev_start (EV_A_ (W)w, 1); 2810 ev_start (EV_A_ (W)w, 1);
2346 wlist_add (&signals [w->signum - 1].head, (WL)w); 2811 wlist_add (&signals [w->signum - 1].head, (WL)w);
2347 2812
2348 if (!((WL)w)->next) 2813 if (!((WL)w)->next)
2814# if EV_USE_SIGNALFD
2815 if (sigfd < 0) /*TODO*/
2816# endif
2349 { 2817 {
2350#if _WIN32 2818# ifdef _WIN32
2819 evpipe_init (EV_A);
2820
2351 signal (w->signum, ev_sighandler); 2821 signal (w->signum, ev_sighandler);
2352#else 2822# else
2353 struct sigaction sa; 2823 struct sigaction sa;
2824
2825 evpipe_init (EV_A);
2826
2354 sa.sa_handler = ev_sighandler; 2827 sa.sa_handler = ev_sighandler;
2355 sigfillset (&sa.sa_mask); 2828 sigfillset (&sa.sa_mask);
2356 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2357 sigaction (w->signum, &sa, 0); 2830 sigaction (w->signum, &sa, 0);
2831
2832 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2358#endif 2835#endif
2359 } 2836 }
2360 2837
2361 EV_FREQUENT_CHECK; 2838 EV_FREQUENT_CHECK;
2362} 2839}
2363 2840
2364void noinline 2841void noinline
… …
2372 2849
2373 wlist_del (&signals [w->signum - 1].head, (WL)w); 2850 wlist_del (&signals [w->signum - 1].head, (WL)w);
2374 ev_stop (EV_A_ (W)w); 2851 ev_stop (EV_A_ (W)w);
2375 2852
2376 if (!signals [w->signum - 1].head) 2853 if (!signals [w->signum - 1].head)
2854 {
2855#if EV_MULTIPLICITY
2856 signals [w->signum - 1].loop = 0; /* unattach from signal */
2857#endif
2858#if EV_USE_SIGNALFD
2859 if (sigfd >= 0)
2860 {
2861 sigset_t ss;
2862
2863 sigemptyset (&ss);
2864 sigaddset (&ss, w->signum);
2865 sigdelset (&sigfd_set, w->signum);
2866
2867 signalfd (sigfd, &sigfd_set, 0);
2868 sigprocmask (SIG_UNBLOCK, &ss, 0);
2869 }
2870 else
2871#endif
2377 signal (w->signum, SIG_DFL); 2872 signal (w->signum, SIG_DFL);
2873 }
2378 2874
2379 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2380} 2876}
2877
2878#endif
2879
2880#if EV_CHILD_ENABLE
2381 2881
2382void 2882void
2383ev_child_start (EV_P_ ev_child *w) 2883ev_child_start (EV_P_ ev_child *w)
2384{ 2884{
2385#if EV_MULTIPLICITY 2885#if EV_MULTIPLICITY
2386 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2886 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2387#endif 2887#endif
2388 if (expect_false (ev_is_active (w))) 2888 if (expect_false (ev_is_active (w)))
2389 return; 2889 return;
2390 2890
2391 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2392 2892
2393 ev_start (EV_A_ (W)w, 1); 2893 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2894 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2395 2895
2396 EV_FREQUENT_CHECK; 2896 EV_FREQUENT_CHECK;
2397} 2897}
2398 2898
2399void 2899void
… …
2403 if (expect_false (!ev_is_active (w))) 2903 if (expect_false (!ev_is_active (w)))
2404 return; 2904 return;
2405 2905
2406 EV_FREQUENT_CHECK; 2906 EV_FREQUENT_CHECK;
2407 2907
2408 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2908 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2409 ev_stop (EV_A_ (W)w); 2909 ev_stop (EV_A_ (W)w);
2410 2910
2411 EV_FREQUENT_CHECK; 2911 EV_FREQUENT_CHECK;
2412} 2912}
2913
2914#endif
2413 2915
2414#if EV_STAT_ENABLE 2916#if EV_STAT_ENABLE
2415 2917
2416# ifdef _WIN32 2918# ifdef _WIN32
2417# undef lstat 2919# undef lstat
2418# define lstat(a,b) _stati64 (a,b) 2920# define lstat(a,b) _stati64 (a,b)
2419# endif 2921# endif
2420 2922
2421#define DEF_STAT_INTERVAL 5.0074891 2923#define DEF_STAT_INTERVAL 5.0074891
2924#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2422#define MIN_STAT_INTERVAL 0.1074891 2925#define MIN_STAT_INTERVAL 0.1074891
2423 2926
2424static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2927static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425 2928
2426#if EV_USE_INOTIFY 2929#if EV_USE_INOTIFY
2427# define EV_INOTIFY_BUFSIZE 8192 2930
2931/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2932# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2428 2933
2429static void noinline 2934static void noinline
2430infy_add (EV_P_ ev_stat *w) 2935infy_add (EV_P_ ev_stat *w)
2431{ 2936{
2432 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2937 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2433 2938
2434 if (w->wd < 0) 2939 if (w->wd >= 0)
2940 {
2941 struct statfs sfs;
2942
2943 /* now local changes will be tracked by inotify, but remote changes won't */
2944 /* unless the filesystem is known to be local, we therefore still poll */
2945 /* also do poll on <2.6.25, but with normal frequency */
2946
2947 if (!fs_2625)
2948 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2949 else if (!statfs (w->path, &sfs)
2950 && (sfs.f_type == 0x1373 /* devfs */
2951 || sfs.f_type == 0xEF53 /* ext2/3 */
2952 || sfs.f_type == 0x3153464a /* jfs */
2953 || sfs.f_type == 0x52654973 /* reiser3 */
2954 || sfs.f_type == 0x01021994 /* tempfs */
2955 || sfs.f_type == 0x58465342 /* xfs */))
2956 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2957 else
2958 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2435 { 2959 }
2436 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2960 else
2961 {
2962 /* can't use inotify, continue to stat */
2963 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2437 2964
2438 /* monitor some parent directory for speedup hints */ 2965 /* if path is not there, monitor some parent directory for speedup hints */
2439 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2966 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2440 /* but an efficiency issue only */ 2967 /* but an efficiency issue only */
2441 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2968 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2442 { 2969 {
2443 char path [4096]; 2970 char path [4096];
2444 strcpy (path, w->path); 2971 strcpy (path, w->path);
… …
2448 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2975 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2449 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2976 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2450 2977
2451 char *pend = strrchr (path, '/'); 2978 char *pend = strrchr (path, '/');
2452 2979
2453 if (!pend) 2980 if (!pend || pend == path)
2454 break; /* whoops, no '/', complain to your admin */ 2981 break;
2455 2982
2456 *pend = 0; 2983 *pend = 0;
2457 w->wd = inotify_add_watch (fs_fd, path, mask); 2984 w->wd = inotify_add_watch (fs_fd, path, mask);
2458 } 2985 }
2459 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2460 } 2987 }
2461 } 2988 }
2462 else
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 2989
2465 if (w->wd >= 0) 2990 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2991 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2992
2993 /* now re-arm timer, if required */
2994 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2995 ev_timer_again (EV_A_ &w->timer);
2996 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 2997}
2468 2998
2469static void noinline 2999static void noinline
2470infy_del (EV_P_ ev_stat *w) 3000infy_del (EV_P_ ev_stat *w)
2471{ 3001{
… …
2474 3004
2475 if (wd < 0) 3005 if (wd < 0)
2476 return; 3006 return;
2477 3007
2478 w->wd = -2; 3008 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3009 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3010 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3011
2482 /* remove this watcher, if others are watching it, they will rearm */ 3012 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3013 inotify_rm_watch (fs_fd, wd);
2484} 3014}
2485 3015
2486static void noinline 3016static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3017infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3018{
2489 if (slot < 0) 3019 if (slot < 0)
2490 /* overflow, need to check for all hahs slots */ 3020 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3021 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3022 infy_wd (EV_A_ slot, wd, ev);
2493 else 3023 else
2494 { 3024 {
2495 WL w_; 3025 WL w_;
2496 3026
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3027 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3028 {
2499 ev_stat *w = (ev_stat *)w_; 3029 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3030 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3031
2502 if (w->wd == wd || wd == -1) 3032 if (w->wd == wd || wd == -1)
2503 { 3033 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3034 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3035 {
3036 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3037 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3038 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3039 }
2509 3040
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3041 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3046
2516static void 3047static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3048infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3049{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3050 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3051 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3052 int len = read (fs_fd, buf, sizeof (buf));
2523 3053
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3054 for (ofs = 0; ofs < len; )
3055 {
3056 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3057 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len;
3059 }
2526} 3060}
2527 3061
2528void inline_size 3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void
3095ev_check_2625 (EV_P)
3096{
3097 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */
3100 if (ev_linux_version () < 0x020619)
3101 return;
3102
3103 fs_2625 = 1;
3104}
3105
3106inline_size int
3107infy_newfd (void)
3108{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0)
3112 return fd;
3113#endif
3114 return inotify_init ();
3115}
3116
3117inline_size void
2529infy_init (EV_P) 3118infy_init (EV_P)
2530{ 3119{
2531 if (fs_fd != -2) 3120 if (fs_fd != -2)
2532 return; 3121 return;
2533 3122
3123 fs_fd = -1;
3124
3125 ev_check_2625 (EV_A);
3126
2534 fs_fd = inotify_init (); 3127 fs_fd = infy_newfd ();
2535 3128
2536 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
2537 { 3130 {
3131 fd_intern (fs_fd);
2538 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3132 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2539 ev_set_priority (&fs_w, EV_MAXPRI); 3133 ev_set_priority (&fs_w, EV_MAXPRI);
2540 ev_io_start (EV_A_ &fs_w); 3134 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A);
2541 } 3136 }
2542} 3137}
2543 3138
2544void inline_size 3139inline_size void
2545infy_fork (EV_P) 3140infy_fork (EV_P)
2546{ 3141{
2547 int slot; 3142 int slot;
2548 3143
2549 if (fs_fd < 0) 3144 if (fs_fd < 0)
2550 return; 3145 return;
2551 3146
3147 ev_ref (EV_A);
3148 ev_io_stop (EV_A_ &fs_w);
2552 close (fs_fd); 3149 close (fs_fd);
2553 fs_fd = inotify_init (); 3150 fs_fd = infy_newfd ();
2554 3151
3152 if (fs_fd >= 0)
3153 {
3154 fd_intern (fs_fd);
3155 ev_io_set (&fs_w, fs_fd, EV_READ);
3156 ev_io_start (EV_A_ &fs_w);
3157 ev_unref (EV_A);
3158 }
3159
2555 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3160 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2556 { 3161 {
2557 WL w_ = fs_hash [slot].head; 3162 WL w_ = fs_hash [slot].head;
2558 fs_hash [slot].head = 0; 3163 fs_hash [slot].head = 0;
2559 3164
2560 while (w_) 3165 while (w_)
… …
2565 w->wd = -1; 3170 w->wd = -1;
2566 3171
2567 if (fs_fd >= 0) 3172 if (fs_fd >= 0)
2568 infy_add (EV_A_ w); /* re-add, no matter what */ 3173 infy_add (EV_A_ w); /* re-add, no matter what */
2569 else 3174 else
3175 {
3176 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3177 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570 ev_timer_start (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3180 }
2571 } 3181 }
2572
2573 } 3182 }
2574} 3183}
2575 3184
2576#endif 3185#endif
2577 3186
… …
2593static void noinline 3202static void noinline
2594stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3203stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2595{ 3204{
2596 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3205 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2597 3206
2598 /* we copy this here each the time so that */ 3207 ev_statdata prev = w->attr;
2599 /* prev has the old value when the callback gets invoked */
2600 w->prev = w->attr;
2601 ev_stat_stat (EV_A_ w); 3208 ev_stat_stat (EV_A_ w);
2602 3209
2603 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3210 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2604 if ( 3211 if (
2605 w->prev.st_dev != w->attr.st_dev 3212 prev.st_dev != w->attr.st_dev
2606 || w->prev.st_ino != w->attr.st_ino 3213 || prev.st_ino != w->attr.st_ino
2607 || w->prev.st_mode != w->attr.st_mode 3214 || prev.st_mode != w->attr.st_mode
2608 || w->prev.st_nlink != w->attr.st_nlink 3215 || prev.st_nlink != w->attr.st_nlink
2609 || w->prev.st_uid != w->attr.st_uid 3216 || prev.st_uid != w->attr.st_uid
2610 || w->prev.st_gid != w->attr.st_gid 3217 || prev.st_gid != w->attr.st_gid
2611 || w->prev.st_rdev != w->attr.st_rdev 3218 || prev.st_rdev != w->attr.st_rdev
2612 || w->prev.st_size != w->attr.st_size 3219 || prev.st_size != w->attr.st_size
2613 || w->prev.st_atime != w->attr.st_atime 3220 || prev.st_atime != w->attr.st_atime
2614 || w->prev.st_mtime != w->attr.st_mtime 3221 || prev.st_mtime != w->attr.st_mtime
2615 || w->prev.st_ctime != w->attr.st_ctime 3222 || prev.st_ctime != w->attr.st_ctime
2616 ) { 3223 ) {
3224 /* we only update w->prev on actual differences */
3225 /* in case we test more often than invoke the callback, */
3226 /* to ensure that prev is always different to attr */
3227 w->prev = prev;
3228
2617 #if EV_USE_INOTIFY 3229 #if EV_USE_INOTIFY
3230 if (fs_fd >= 0)
3231 {
2618 infy_del (EV_A_ w); 3232 infy_del (EV_A_ w);
2619 infy_add (EV_A_ w); 3233 infy_add (EV_A_ w);
2620 ev_stat_stat (EV_A_ w); /* avoid race... */ 3234 ev_stat_stat (EV_A_ w); /* avoid race... */
3235 }
2621 #endif 3236 #endif
2622 3237
2623 ev_feed_event (EV_A_ w, EV_STAT); 3238 ev_feed_event (EV_A_ w, EV_STAT);
2624 } 3239 }
2625} 3240}
… …
2628ev_stat_start (EV_P_ ev_stat *w) 3243ev_stat_start (EV_P_ ev_stat *w)
2629{ 3244{
2630 if (expect_false (ev_is_active (w))) 3245 if (expect_false (ev_is_active (w)))
2631 return; 3246 return;
2632 3247
2633 /* since we use memcmp, we need to clear any padding data etc. */
2634 memset (&w->prev, 0, sizeof (ev_statdata));
2635 memset (&w->attr, 0, sizeof (ev_statdata));
2636
2637 ev_stat_stat (EV_A_ w); 3248 ev_stat_stat (EV_A_ w);
2638 3249
3250 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2639 if (w->interval < MIN_STAT_INTERVAL) 3251 w->interval = MIN_STAT_INTERVAL;
2640 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2641 3252
2642 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3253 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2643 ev_set_priority (&w->timer, ev_priority (w)); 3254 ev_set_priority (&w->timer, ev_priority (w));
2644 3255
2645#if EV_USE_INOTIFY 3256#if EV_USE_INOTIFY
2646 infy_init (EV_A); 3257 infy_init (EV_A);
2647 3258
2648 if (fs_fd >= 0) 3259 if (fs_fd >= 0)
2649 infy_add (EV_A_ w); 3260 infy_add (EV_A_ w);
2650 else 3261 else
2651#endif 3262#endif
3263 {
2652 ev_timer_start (EV_A_ &w->timer); 3264 ev_timer_again (EV_A_ &w->timer);
3265 ev_unref (EV_A);
3266 }
2653 3267
2654 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2655 3269
2656 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2657} 3271}
… …
2666 EV_FREQUENT_CHECK; 3280 EV_FREQUENT_CHECK;
2667 3281
2668#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2669 infy_del (EV_A_ w); 3283 infy_del (EV_A_ w);
2670#endif 3284#endif
3285
3286 if (ev_is_active (&w->timer))
3287 {
3288 ev_ref (EV_A);
2671 ev_timer_stop (EV_A_ &w->timer); 3289 ev_timer_stop (EV_A_ &w->timer);
3290 }
2672 3291
2673 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2674 3293
2675 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
2676} 3295}
… …
2721 3340
2722 EV_FREQUENT_CHECK; 3341 EV_FREQUENT_CHECK;
2723} 3342}
2724#endif 3343#endif
2725 3344
3345#if EV_PREPARE_ENABLE
2726void 3346void
2727ev_prepare_start (EV_P_ ev_prepare *w) 3347ev_prepare_start (EV_P_ ev_prepare *w)
2728{ 3348{
2729 if (expect_false (ev_is_active (w))) 3349 if (expect_false (ev_is_active (w)))
2730 return; 3350 return;
… …
2756 3376
2757 ev_stop (EV_A_ (W)w); 3377 ev_stop (EV_A_ (W)w);
2758 3378
2759 EV_FREQUENT_CHECK; 3379 EV_FREQUENT_CHECK;
2760} 3380}
3381#endif
2761 3382
3383#if EV_CHECK_ENABLE
2762void 3384void
2763ev_check_start (EV_P_ ev_check *w) 3385ev_check_start (EV_P_ ev_check *w)
2764{ 3386{
2765 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2766 return; 3388 return;
… …
2792 3414
2793 ev_stop (EV_A_ (W)w); 3415 ev_stop (EV_A_ (W)w);
2794 3416
2795 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
2796} 3418}
3419#endif
2797 3420
2798#if EV_EMBED_ENABLE 3421#if EV_EMBED_ENABLE
2799void noinline 3422void noinline
2800ev_embed_sweep (EV_P_ ev_embed *w) 3423ev_embed_sweep (EV_P_ ev_embed *w)
2801{ 3424{
… …
2817embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2818{ 3441{
2819 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3442 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2820 3443
2821 { 3444 {
2822 struct ev_loop *loop = w->other; 3445 EV_P = w->other;
2823 3446
2824 while (fdchangecnt) 3447 while (fdchangecnt)
2825 { 3448 {
2826 fd_reify (EV_A); 3449 fd_reify (EV_A);
2827 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3450 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2828 } 3451 }
2829 } 3452 }
2830} 3453}
2831 3454
3455static void
3456embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3457{
3458 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3459
3460 ev_embed_stop (EV_A_ w);
3461
3462 {
3463 EV_P = w->other;
3464
3465 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3467 }
3468
3469 ev_embed_start (EV_A_ w);
3470}
3471
2832#if 0 3472#if 0
2833static void 3473static void
2834embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3474embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2835{ 3475{
2836 ev_idle_stop (EV_A_ idle); 3476 ev_idle_stop (EV_A_ idle);
… …
2842{ 3482{
2843 if (expect_false (ev_is_active (w))) 3483 if (expect_false (ev_is_active (w)))
2844 return; 3484 return;
2845 3485
2846 { 3486 {
2847 struct ev_loop *loop = w->other; 3487 EV_P = w->other;
2848 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3488 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2849 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3489 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2850 } 3490 }
2851 3491
2852 EV_FREQUENT_CHECK; 3492 EV_FREQUENT_CHECK;
2853 3493
… …
2856 3496
2857 ev_prepare_init (&w->prepare, embed_prepare_cb); 3497 ev_prepare_init (&w->prepare, embed_prepare_cb);
2858 ev_set_priority (&w->prepare, EV_MINPRI); 3498 ev_set_priority (&w->prepare, EV_MINPRI);
2859 ev_prepare_start (EV_A_ &w->prepare); 3499 ev_prepare_start (EV_A_ &w->prepare);
2860 3500
3501 ev_fork_init (&w->fork, embed_fork_cb);
3502 ev_fork_start (EV_A_ &w->fork);
3503
2861 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3504 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2862 3505
2863 ev_start (EV_A_ (W)w, 1); 3506 ev_start (EV_A_ (W)w, 1);
2864 3507
2865 EV_FREQUENT_CHECK; 3508 EV_FREQUENT_CHECK;
… …
2872 if (expect_false (!ev_is_active (w))) 3515 if (expect_false (!ev_is_active (w)))
2873 return; 3516 return;
2874 3517
2875 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2876 3519
2877 ev_io_stop (EV_A_ &w->io); 3520 ev_io_stop (EV_A_ &w->io);
2878 ev_prepare_stop (EV_A_ &w->prepare); 3521 ev_prepare_stop (EV_A_ &w->prepare);
3522 ev_fork_stop (EV_A_ &w->fork);
2879 3523
2880 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2881 3525
2882 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2883} 3527}
… …
2962 3606
2963void 3607void
2964ev_async_send (EV_P_ ev_async *w) 3608ev_async_send (EV_P_ ev_async *w)
2965{ 3609{
2966 w->sent = 1; 3610 w->sent = 1;
2967 evpipe_write (EV_A_ &gotasync); 3611 evpipe_write (EV_A_ &async_pending);
2968} 3612}
2969#endif 3613#endif
2970 3614
2971/*****************************************************************************/ 3615/*****************************************************************************/
2972 3616
… …
2992} 3636}
2993 3637
2994static void 3638static void
2995once_cb_io (EV_P_ ev_io *w, int revents) 3639once_cb_io (EV_P_ ev_io *w, int revents)
2996{ 3640{
2997 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3641 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3642
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2998} 3644}
2999 3645
3000static void 3646static void
3001once_cb_to (EV_P_ ev_timer *w, int revents) 3647once_cb_to (EV_P_ ev_timer *w, int revents)
3002{ 3648{
3003 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3649 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3650
3651 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3004} 3652}
3005 3653
3006void 3654void
3007ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3655ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3008{ 3656{
3009 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3657 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3010 3658
3011 if (expect_false (!once)) 3659 if (expect_false (!once))
3012 { 3660 {
3013 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3661 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3014 return; 3662 return;
3015 } 3663 }
3016 3664
3017 once->cb = cb; 3665 once->cb = cb;
3018 once->arg = arg; 3666 once->arg = arg;
… …
3030 ev_timer_set (&once->to, timeout, 0.); 3678 ev_timer_set (&once->to, timeout, 0.);
3031 ev_timer_start (EV_A_ &once->to); 3679 ev_timer_start (EV_A_ &once->to);
3032 } 3680 }
3033} 3681}
3034 3682
3683/*****************************************************************************/
3684
3685#if EV_WALK_ENABLE
3686void
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3688{
3689 int i, j;
3690 ev_watcher_list *wl, *wn;
3691
3692 if (types & (EV_IO | EV_EMBED))
3693 for (i = 0; i < anfdmax; ++i)
3694 for (wl = anfds [i].head; wl; )
3695 {
3696 wn = wl->next;
3697
3698#if EV_EMBED_ENABLE
3699 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3700 {
3701 if (types & EV_EMBED)
3702 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3703 }
3704 else
3705#endif
3706#if EV_USE_INOTIFY
3707 if (ev_cb ((ev_io *)wl) == infy_cb)
3708 ;
3709 else
3710#endif
3711 if ((ev_io *)wl != &pipe_w)
3712 if (types & EV_IO)
3713 cb (EV_A_ EV_IO, wl);
3714
3715 wl = wn;
3716 }
3717
3718 if (types & (EV_TIMER | EV_STAT))
3719 for (i = timercnt + HEAP0; i-- > HEAP0; )
3720#if EV_STAT_ENABLE
3721 /*TODO: timer is not always active*/
3722 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3723 {
3724 if (types & EV_STAT)
3725 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3726 }
3727 else
3728#endif
3729 if (types & EV_TIMER)
3730 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3731
3732#if EV_PERIODIC_ENABLE
3733 if (types & EV_PERIODIC)
3734 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif
3737
3738#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; )
3741 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif
3744
3745#if EV_FORK_ENABLE
3746 if (types & EV_FORK)
3747 for (i = forkcnt; i--; )
3748 if (ev_cb (forks [i]) != embed_fork_cb)
3749 cb (EV_A_ EV_FORK, forks [i]);
3750#endif
3751
3752#if EV_ASYNC_ENABLE
3753 if (types & EV_ASYNC)
3754 for (i = asynccnt; i--; )
3755 cb (EV_A_ EV_ASYNC, asyncs [i]);
3756#endif
3757
3758#if EV_PREPARE_ENABLE
3759 if (types & EV_PREPARE)
3760 for (i = preparecnt; i--; )
3761# if EV_EMBED_ENABLE
3762 if (ev_cb (prepares [i]) != embed_prepare_cb)
3763# endif
3764 cb (EV_A_ EV_PREPARE, prepares [i]);
3765#endif
3766
3767#if EV_CHECK_ENABLE
3768 if (types & EV_CHECK)
3769 for (i = checkcnt; i--; )
3770 cb (EV_A_ EV_CHECK, checks [i]);
3771#endif
3772
3773#if EV_SIGNAL_ENABLE
3774 if (types & EV_SIGNAL)
3775 for (i = 0; i < EV_NSIG - 1; ++i)
3776 for (wl = signals [i].head; wl; )
3777 {
3778 wn = wl->next;
3779 cb (EV_A_ EV_SIGNAL, wl);
3780 wl = wn;
3781 }
3782#endif
3783
3784#if EV_CHILD_ENABLE
3785 if (types & EV_CHILD)
3786 for (i = (EV_PID_HASHSIZE); i--; )
3787 for (wl = childs [i]; wl; )
3788 {
3789 wn = wl->next;
3790 cb (EV_A_ EV_CHILD, wl);
3791 wl = wn;
3792 }
3793#endif
3794/* EV_STAT 0x00001000 /* stat data changed */
3795/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3796}
3797#endif
3798
3035#if EV_MULTIPLICITY 3799#if EV_MULTIPLICITY
3036 #include "ev_wrap.h" 3800 #include "ev_wrap.h"
3037#endif 3801#endif
3038 3802
3039#ifdef __cplusplus 3803#ifdef __cplusplus

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