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Comparing libev/ev.c (file contents):
Revision 1.252 by root, Thu May 22 03:43:32 2008 UTC vs.
Revision 1.344 by root, Fri Jul 9 20:55:14 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
74# endif 98# endif
75 99
100# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
89# endif
90# endif 107# endif
91 108
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
95# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
98# endif 116# endif
99 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
106# endif 125# endif
107 126
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
111# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
114# endif 134# endif
115 135
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
122# endif 143# endif
123 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
154#ifndef _WIN32 187#ifndef _WIN32
155# include <sys/time.h> 188# include <sys/time.h>
156# include <sys/wait.h> 189# include <sys/wait.h>
157# include <unistd.h> 190# include <unistd.h>
158#else 191#else
192# include <io.h>
159# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 194# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
163# endif 197# endif
198# undef EV_AVOID_STDIO
164#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
165 208
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
167 210
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
246
168#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else
169# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
252# endif
170#endif 253#endif
171 254
172#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 257#endif
175 258
176#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
260# if _POSIX_C_SOURCE >= 199309L
261# define EV_USE_NANOSLEEP EV_FEATURE_OS
262# else
177# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
264# endif
178#endif 265#endif
179 266
180#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 269#endif
183 270
184#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
185# ifdef _WIN32 272# ifdef _WIN32
186# define EV_USE_POLL 0 273# define EV_USE_POLL 0
187# else 274# else
188# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 276# endif
190#endif 277#endif
191 278
192#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 282# else
196# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
197# endif 284# endif
198#endif 285#endif
199 286
… …
205# define EV_USE_PORT 0 292# define EV_USE_PORT 0
206#endif 293#endif
207 294
208#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 298# else
212# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
213# endif 300# endif
214#endif 301#endif
215 302
216#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 305#endif
223 306
224#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 309#endif
231 310
232#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 314# else
236# 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
237# endif 324# endif
238#endif 325#endif
239 326
240#if 0 /* debugging */ 327#if 0 /* debugging */
241# define EV_VERIFY 3 328# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
244#endif 331#endif
245 332
246#ifndef EV_VERIFY 333#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 335#endif
249 336
250#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 339#endif
253 340
254#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
255# 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
256#endif 357#endif
257 358
258/* 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
259 366
260#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
263#endif 370#endif
… …
277# include <sys/select.h> 384# include <sys/select.h>
278# endif 385# endif
279#endif 386#endif
280 387
281#if EV_USE_INOTIFY 388#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h>
282# 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
283#endif 397#endif
284 398
285#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 400# include <winsock.h>
287#endif 401#endif
288 402
289#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
290/* 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 */
291# 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
292# ifdef __cplusplus 416# ifdef __cplusplus
293extern "C" { 417extern "C" {
294# endif 418# endif
295int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
296# ifdef __cplusplus 420# ifdef __cplusplus
297} 421}
298# endif 422# endif
299#endif 423#endif
300 424
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
301/**/ 454/**/
302 455
303#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 458#else
306# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
307#endif 460#endif
308 461
309/* 462/*
… …
316 */ 469 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
318 471
319#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) */
320#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) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 474
323#if __GNUC__ >= 4 475#if __GNUC__ >= 4
324# define expect(expr,value) __builtin_expect ((expr),(value)) 476# define expect(expr,value) __builtin_expect ((expr),(value))
325# define noinline __attribute__ ((noinline)) 477# define noinline __attribute__ ((noinline))
326#else 478#else
… …
333 485
334#define expect_false(expr) expect ((expr) != 0, 0) 486#define expect_false(expr) expect ((expr) != 0, 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 487#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline 488#define inline_size static inline
337 489
338#if EV_MINIMAL 490#if EV_FEATURE_CODE
491# define inline_speed static inline
492#else
339# 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)
340#else 500#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif
346 503
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 504#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 505#define EMPTY2(a,b) /* used to suppress some warnings */
349 506
350typedef ev_watcher *W; 507typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 509typedef ev_watcher_time *WT;
353 510
354#define ev_active(w) ((W)(w))->active 511#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 512#define ev_at(w) ((WT)(w))->at
356 513
357#if EV_USE_MONOTONIC 514#if EV_USE_REALTIME
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 515/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */ 516/* giving it a reasonably high chance of working on typical architetcures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif
519
520#if EV_USE_MONOTONIC
360static 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)
361#endif 532#endif
362 533
363#ifdef _WIN32 534#ifdef _WIN32
364# include "ev_win32.c" 535# include "ev_win32.c"
365#endif 536#endif
366 537
367/*****************************************************************************/ 538/*****************************************************************************/
368 539
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
369static void (*syserr_cb)(const char *msg); 548static void (*syserr_cb)(const char *msg);
370 549
371void 550void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 551ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 552{
374 syserr_cb = cb; 553 syserr_cb = cb;
375} 554}
376 555
377static void noinline 556static void noinline
378syserr (const char *msg) 557ev_syserr (const char *msg)
379{ 558{
380 if (!msg) 559 if (!msg)
381 msg = "(libev) system error"; 560 msg = "(libev) system error";
382 561
383 if (syserr_cb) 562 if (syserr_cb)
384 syserr_cb (msg); 563 syserr_cb (msg);
385 else 564 else
386 { 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
387 perror (msg); 574 perror (msg);
575#endif
388 abort (); 576 abort ();
389 } 577 }
390} 578}
391 579
392static void * 580static void *
393ev_realloc_emul (void *ptr, long size) 581ev_realloc_emul (void *ptr, long size)
394{ 582{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
395 /* some systems, notably openbsd and darwin, fail to properly 586 /* some systems, notably openbsd and darwin, fail to properly
396 * 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
397 * the single unix specification, so work around them here. 588 * the single unix specification, so work around them here.
398 */ 589 */
399 590
400 if (size) 591 if (size)
401 return realloc (ptr, size); 592 return realloc (ptr, size);
402 593
403 free (ptr); 594 free (ptr);
404 return 0; 595 return 0;
596#endif
405} 597}
406 598
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 600
409void 601void
… …
417{ 609{
418 ptr = alloc (ptr, size); 610 ptr = alloc (ptr, size);
419 611
420 if (!ptr && size) 612 if (!ptr && size)
421 { 613 {
614#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n");
616#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
618#endif
423 abort (); 619 abort ();
424 } 620 }
425 621
426 return ptr; 622 return ptr;
427} 623}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 625#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 626#define ev_free(ptr) ev_realloc ((ptr), 0)
431 627
432/*****************************************************************************/ 628/*****************************************************************************/
433 629
630/* set in reify when reification needed */
631#define EV_ANFD_REIFY 1
632
633/* file descriptor info structure */
434typedef struct 634typedef struct
435{ 635{
436 WL head; 636 WL head;
437 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 */
438 unsigned char reify; 640 unsigned char unused;
641#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif
439#if EV_SELECT_IS_WINSOCKET 644#if EV_SELECT_IS_WINSOCKET
440 SOCKET handle; 645 SOCKET handle;
441#endif 646#endif
442} ANFD; 647} ANFD;
443 648
649/* stores the pending event set for a given watcher */
444typedef struct 650typedef struct
445{ 651{
446 W w; 652 W w;
447 int events; 653 int events; /* the pending event set for the given watcher */
448} ANPENDING; 654} ANPENDING;
449 655
450#if EV_USE_INOTIFY 656#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 657/* hash table entry per inotify-id */
452typedef struct 658typedef struct
… …
455} ANFS; 661} ANFS;
456#endif 662#endif
457 663
458/* Heap Entry */ 664/* Heap Entry */
459#if EV_HEAP_CACHE_AT 665#if EV_HEAP_CACHE_AT
666 /* a heap element */
460 typedef struct { 667 typedef struct {
461 ev_tstamp at; 668 ev_tstamp at;
462 WT w; 669 WT w;
463 } ANHE; 670 } ANHE;
464 671
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 672 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 673 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #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 */
468#else 675#else
676 /* a heap element */
469 typedef WT ANHE; 677 typedef WT ANHE;
470 678
471 #define ANHE_w(he) (he) 679 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 680 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 681 #define ANHE_at_cache(he)
… …
497 705
498 static int ev_default_loop_ptr; 706 static int ev_default_loop_ptr;
499 707
500#endif 708#endif
501 709
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
502/*****************************************************************************/ 722/*****************************************************************************/
503 723
724#ifndef EV_HAVE_EV_TIME
504ev_tstamp 725ev_tstamp
505ev_time (void) 726ev_time (void)
506{ 727{
507#if EV_USE_REALTIME 728#if EV_USE_REALTIME
729 if (expect_true (have_realtime))
730 {
508 struct timespec ts; 731 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 732 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 733 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 734 }
735#endif
736
512 struct timeval tv; 737 struct timeval tv;
513 gettimeofday (&tv, 0); 738 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 739 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 740}
741#endif
517 742
518ev_tstamp inline_size 743inline_size ev_tstamp
519get_clock (void) 744get_clock (void)
520{ 745{
521#if EV_USE_MONOTONIC 746#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 747 if (expect_true (have_monotonic))
523 { 748 {
… …
556 struct timeval tv; 781 struct timeval tv;
557 782
558 tv.tv_sec = (time_t)delay; 783 tv.tv_sec = (time_t)delay;
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560 785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */
561 select (0, 0, 0, 0, &tv); 789 select (0, 0, 0, 0, &tv);
562#endif 790#endif
563 } 791 }
564} 792}
565 793
566/*****************************************************************************/ 794/*****************************************************************************/
567 795
568#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 */
569 797
570int inline_size 798/* find a suitable new size for the given array, */
799/* hopefully by rounding to a ncie-to-malloc size */
800inline_size int
571array_nextsize (int elem, int cur, int cnt) 801array_nextsize (int elem, int cur, int cnt)
572{ 802{
573 int ncur = cur + 1; 803 int ncur = cur + 1;
574 804
575 do 805 do
… …
592array_realloc (int elem, void *base, int *cur, int cnt) 822array_realloc (int elem, void *base, int *cur, int cnt)
593{ 823{
594 *cur = array_nextsize (elem, *cur, cnt); 824 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 825 return ev_realloc (base, elem * *cur);
596} 826}
827
828#define array_init_zero(base,count) \
829 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 830
598#define array_needsize(type,base,cur,cnt,init) \ 831#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 832 if (expect_false ((cnt) > (cur))) \
600 { \ 833 { \
601 int ocur_ = (cur); \ 834 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 846 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 847 }
615#endif 848#endif
616 849
617#define array_free(stem, idx) \ 850#define array_free(stem, idx) \
618 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
619 852
620/*****************************************************************************/ 853/*****************************************************************************/
854
855/* dummy callback for pending events */
856static void noinline
857pendingcb (EV_P_ ev_prepare *w, int revents)
858{
859}
621 860
622void noinline 861void noinline
623ev_feed_event (EV_P_ void *w, int revents) 862ev_feed_event (EV_P_ void *w, int revents)
624{ 863{
625 W w_ = (W)w; 864 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 873 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 874 pendings [pri][w_->pending - 1].events = revents;
636 } 875 }
637} 876}
638 877
639void 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
640queue_events (EV_P_ W *events, int eventcnt, int type) 894queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 895{
642 int i; 896 int i;
643 897
644 for (i = 0; i < eventcnt; ++i) 898 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 899 ev_feed_event (EV_A_ events [i], type);
646} 900}
647 901
648/*****************************************************************************/ 902/*****************************************************************************/
649 903
650void inline_size 904inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 905fd_event_nocheck (EV_P_ int fd, int revents)
665{ 906{
666 ANFD *anfd = anfds + fd; 907 ANFD *anfd = anfds + fd;
667 ev_io *w; 908 ev_io *w;
668 909
669 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)
… …
673 if (ev) 914 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 915 ev_feed_event (EV_A_ (W)w, ev);
675 } 916 }
676} 917}
677 918
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
678void 930void
679ev_feed_fd_event (EV_P_ int fd, int revents) 931ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 932{
681 if (fd >= 0 && fd < anfdmax) 933 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 934 fd_event_nocheck (EV_A_ fd, revents);
683} 935}
684 936
685void inline_size 937/* make sure the external fd watch events are in-sync */
938/* with the kernel/libev internal state */
939inline_size void
686fd_reify (EV_P) 940fd_reify (EV_P)
687{ 941{
688 int i; 942 int i;
689 943
690 for (i = 0; i < fdchangecnt; ++i) 944 for (i = 0; i < fdchangecnt; ++i)
… …
699 events |= (unsigned char)w->events; 953 events |= (unsigned char)w->events;
700 954
701#if EV_SELECT_IS_WINSOCKET 955#if EV_SELECT_IS_WINSOCKET
702 if (events) 956 if (events)
703 { 957 {
704 unsigned long argp; 958 unsigned long arg;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
708 anfd->handle = _get_osfhandle (fd);
709 #endif
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
711 } 961 }
712#endif 962#endif
713 963
714 { 964 {
715 unsigned char o_events = anfd->events; 965 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify; 966 unsigned char o_reify = anfd->reify;
717 967
718 anfd->reify = 0; 968 anfd->reify = 0;
719 anfd->events = events; 969 anfd->events = events;
720 970
721 if (o_events != events || o_reify & EV_IOFDSET) 971 if (o_events != events || o_reify & EV__IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 972 backend_modify (EV_A_ fd, o_events, events);
723 } 973 }
724 } 974 }
725 975
726 fdchangecnt = 0; 976 fdchangecnt = 0;
727} 977}
728 978
729void inline_size 979/* something about the given fd changed */
980inline_size void
730fd_change (EV_P_ int fd, int flags) 981fd_change (EV_P_ int fd, int flags)
731{ 982{
732 unsigned char reify = anfds [fd].reify; 983 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 984 anfds [fd].reify |= flags;
734 985
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 990 fdchanges [fdchangecnt - 1] = fd;
740 } 991 }
741} 992}
742 993
743void inline_speed 994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void
744fd_kill (EV_P_ int fd) 996fd_kill (EV_P_ int fd)
745{ 997{
746 ev_io *w; 998 ev_io *w;
747 999
748 while ((w = (ev_io *)anfds [fd].head)) 1000 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1002 ev_io_stop (EV_A_ w);
751 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);
752 } 1004 }
753} 1005}
754 1006
755int inline_size 1007/* check whether the given fd is actually valid, for error recovery */
1008inline_size int
756fd_valid (int fd) 1009fd_valid (int fd)
757{ 1010{
758#ifdef _WIN32 1011#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1013#else
761 return fcntl (fd, F_GETFD) != -1; 1014 return fcntl (fd, F_GETFD) != -1;
762#endif 1015#endif
763} 1016}
764 1017
… …
768{ 1021{
769 int fd; 1022 int fd;
770 1023
771 for (fd = 0; fd < anfdmax; ++fd) 1024 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1025 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1026 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1027 fd_kill (EV_A_ fd);
775} 1028}
776 1029
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1030/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1031static void noinline
… …
782 1035
783 for (fd = anfdmax; fd--; ) 1036 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1037 if (anfds [fd].events)
785 { 1038 {
786 fd_kill (EV_A_ fd); 1039 fd_kill (EV_A_ fd);
787 return; 1040 break;
788 } 1041 }
789} 1042}
790 1043
791/* 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 */
792static void noinline 1045static void noinline
… …
796 1049
797 for (fd = 0; fd < anfdmax; ++fd) 1050 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1051 if (anfds [fd].events)
799 { 1052 {
800 anfds [fd].events = 0; 1053 anfds [fd].events = 0;
1054 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1055 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1056 }
1057}
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
803} 1071}
804 1072
805/*****************************************************************************/ 1073/*****************************************************************************/
806 1074
807/* 1075/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1090#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1091#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1092#define UPHEAP_DONE(p,k) ((p) == (k))
825 1093
826/* away from the root */ 1094/* away from the root */
827void inline_speed 1095inline_speed void
828downheap (ANHE *heap, int N, int k) 1096downheap (ANHE *heap, int N, int k)
829{ 1097{
830 ANHE he = heap [k]; 1098 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1099 ANHE *E = heap + N + HEAP0;
832 1100
… …
872#define HEAP0 1 1140#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1141#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1142#define UPHEAP_DONE(p,k) (!(p))
875 1143
876/* away from the root */ 1144/* away from the root */
877void inline_speed 1145inline_speed void
878downheap (ANHE *heap, int N, int k) 1146downheap (ANHE *heap, int N, int k)
879{ 1147{
880 ANHE he = heap [k]; 1148 ANHE he = heap [k];
881 1149
882 for (;;) 1150 for (;;)
883 { 1151 {
884 int c = k << 1; 1152 int c = k << 1;
885 1153
886 if (c > N + HEAP0 - 1) 1154 if (c >= N + HEAP0)
887 break; 1155 break;
888 1156
889 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])
890 ? 1 : 0; 1158 ? 1 : 0;
891 1159
… …
902 ev_active (ANHE_w (he)) = k; 1170 ev_active (ANHE_w (he)) = k;
903} 1171}
904#endif 1172#endif
905 1173
906/* towards the root */ 1174/* towards the root */
907void inline_speed 1175inline_speed void
908upheap (ANHE *heap, int k) 1176upheap (ANHE *heap, int k)
909{ 1177{
910 ANHE he = heap [k]; 1178 ANHE he = heap [k];
911 1179
912 for (;;) 1180 for (;;)
… …
923 1191
924 heap [k] = he; 1192 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1193 ev_active (ANHE_w (he)) = k;
926} 1194}
927 1195
928void inline_size 1196/* move an element suitably so it is in a correct place */
1197inline_size void
929adjustheap (ANHE *heap, int N, int k) 1198adjustheap (ANHE *heap, int N, int k)
930{ 1199{
931 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)]))
932 upheap (heap, k); 1201 upheap (heap, k);
933 else 1202 else
934 downheap (heap, N, k); 1203 downheap (heap, N, k);
935} 1204}
936 1205
937/* 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 */
938void inline_size 1207inline_size void
939reheap (ANHE *heap, int N) 1208reheap (ANHE *heap, int N)
940{ 1209{
941 int i; 1210 int i;
942 1211
943 /* 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 */
… …
946 upheap (heap, i + HEAP0); 1215 upheap (heap, i + HEAP0);
947} 1216}
948 1217
949/*****************************************************************************/ 1218/*****************************************************************************/
950 1219
1220/* associate signal watchers to a signal signal */
951typedef struct 1221typedef struct
952{ 1222{
1223 EV_ATOMIC_T pending;
1224#if EV_MULTIPLICITY
1225 EV_P;
1226#endif
953 WL head; 1227 WL head;
954 EV_ATOMIC_T gotsig;
955} ANSIG; 1228} ANSIG;
956 1229
957static ANSIG *signals; 1230static ANSIG signals [EV_NSIG - 1];
958static int signalmax;
959
960static EV_ATOMIC_T gotsig;
961
962void inline_size
963signals_init (ANSIG *base, int count)
964{
965 while (count--)
966 {
967 base->head = 0;
968 base->gotsig = 0;
969
970 ++base;
971 }
972}
973 1231
974/*****************************************************************************/ 1232/*****************************************************************************/
975 1233
976void inline_speed 1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
977fd_intern (int fd)
978{
979#ifdef _WIN32
980 int arg = 1;
981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982#else
983 fcntl (fd, F_SETFD, FD_CLOEXEC);
984 fcntl (fd, F_SETFL, O_NONBLOCK);
985#endif
986}
987 1235
988static void noinline 1236static void noinline
989evpipe_init (EV_P) 1237evpipe_init (EV_P)
990{ 1238{
991 if (!ev_is_active (&pipeev)) 1239 if (!ev_is_active (&pipe_w))
992 { 1240 {
993#if EV_USE_EVENTFD 1241# if EV_USE_EVENTFD
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL)
994 if ((evfd = eventfd (0, 0)) >= 0) 1244 evfd = eventfd (0, 0);
1245
1246 if (evfd >= 0)
995 { 1247 {
996 evpipe [0] = -1; 1248 evpipe [0] = -1;
997 fd_intern (evfd); 1249 fd_intern (evfd); /* doing it twice doesn't hurt */
998 ev_io_set (&pipeev, evfd, EV_READ); 1250 ev_io_set (&pipe_w, evfd, EV_READ);
999 } 1251 }
1000 else 1252 else
1001#endif 1253# endif
1002 { 1254 {
1003 while (pipe (evpipe)) 1255 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe"); 1256 ev_syserr ("(libev) error creating signal/async pipe");
1005 1257
1006 fd_intern (evpipe [0]); 1258 fd_intern (evpipe [0]);
1007 fd_intern (evpipe [1]); 1259 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ); 1260 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1009 } 1261 }
1010 1262
1011 ev_io_start (EV_A_ &pipeev); 1263 ev_io_start (EV_A_ &pipe_w);
1012 ev_unref (EV_A); /* watcher should not keep loop alive */ 1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 } 1265 }
1014} 1266}
1015 1267
1016void inline_size 1268inline_size void
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{ 1270{
1019 if (!*flag) 1271 if (!*flag)
1020 { 1272 {
1021 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;
1022 1275
1023 *flag = 1; 1276 *flag = 1;
1024 1277
1025#if EV_USE_EVENTFD 1278#if EV_USE_EVENTFD
1026 if (evfd >= 0) 1279 if (evfd >= 0)
… …
1028 uint64_t counter = 1; 1281 uint64_t counter = 1;
1029 write (evfd, &counter, sizeof (uint64_t)); 1282 write (evfd, &counter, sizeof (uint64_t));
1030 } 1283 }
1031 else 1284 else
1032#endif 1285#endif
1033 write (evpipe [1], &old_errno, 1); 1286 write (evpipe [1], &dummy, 1);
1034 1287
1035 errno = old_errno; 1288 errno = old_errno;
1036 } 1289 }
1037} 1290}
1038 1291
1292/* called whenever the libev signal pipe */
1293/* got some events (signal, async) */
1039static void 1294static void
1040pipecb (EV_P_ ev_io *iow, int revents) 1295pipecb (EV_P_ ev_io *iow, int revents)
1041{ 1296{
1297 int i;
1298
1042#if EV_USE_EVENTFD 1299#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1300 if (evfd >= 0)
1044 { 1301 {
1045 uint64_t counter; 1302 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t)); 1303 read (evfd, &counter, sizeof (uint64_t));
… …
1050 { 1307 {
1051 char dummy; 1308 char dummy;
1052 read (evpipe [0], &dummy, 1); 1309 read (evpipe [0], &dummy, 1);
1053 } 1310 }
1054 1311
1055 if (gotsig && ev_is_default_loop (EV_A)) 1312 if (sig_pending)
1056 { 1313 {
1057 int signum; 1314 sig_pending = 0;
1058 gotsig = 0;
1059 1315
1060 for (signum = signalmax; signum--; ) 1316 for (i = EV_NSIG - 1; i--; )
1061 if (signals [signum].gotsig) 1317 if (expect_false (signals [i].pending))
1062 ev_feed_signal_event (EV_A_ signum + 1); 1318 ev_feed_signal_event (EV_A_ i + 1);
1063 } 1319 }
1064 1320
1065#if EV_ASYNC_ENABLE 1321#if EV_ASYNC_ENABLE
1066 if (gotasync) 1322 if (async_pending)
1067 { 1323 {
1068 int i; 1324 async_pending = 0;
1069 gotasync = 0;
1070 1325
1071 for (i = asynccnt; i--; ) 1326 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent) 1327 if (asyncs [i]->sent)
1073 { 1328 {
1074 asyncs [i]->sent = 0; 1329 asyncs [i]->sent = 0;
… …
1082 1337
1083static void 1338static void
1084ev_sighandler (int signum) 1339ev_sighandler (int signum)
1085{ 1340{
1086#if EV_MULTIPLICITY 1341#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct; 1342 EV_P = signals [signum - 1].loop;
1088#endif 1343#endif
1089 1344
1090#if _WIN32 1345#ifdef _WIN32
1091 signal (signum, ev_sighandler); 1346 signal (signum, ev_sighandler);
1092#endif 1347#endif
1093 1348
1094 signals [signum - 1].gotsig = 1; 1349 signals [signum - 1].pending = 1;
1095 evpipe_write (EV_A_ &gotsig); 1350 evpipe_write (EV_A_ &sig_pending);
1096} 1351}
1097 1352
1098void noinline 1353void noinline
1099ev_feed_signal_event (EV_P_ int signum) 1354ev_feed_signal_event (EV_P_ int signum)
1100{ 1355{
1101 WL w; 1356 WL w;
1102 1357
1358 if (expect_false (signum <= 0 || signum > EV_NSIG))
1359 return;
1360
1361 --signum;
1362
1103#if EV_MULTIPLICITY 1363#if EV_MULTIPLICITY
1104 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 */
1105#endif 1365 /* or, likely more useful, feeding a signal nobody is waiting for */
1106 1366
1107 --signum; 1367 if (expect_false (signals [signum].loop != EV_A))
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return; 1368 return;
1369#endif
1111 1370
1112 signals [signum].gotsig = 0; 1371 signals [signum].pending = 0;
1113 1372
1114 for (w = signals [signum].head; w; w = w->next) 1373 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1374 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116} 1375}
1117 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
1118/*****************************************************************************/ 1399/*****************************************************************************/
1119 1400
1401#if EV_CHILD_ENABLE
1120static WL childs [EV_PID_HASHSIZE]; 1402static WL childs [EV_PID_HASHSIZE];
1121
1122#ifndef _WIN32
1123 1403
1124static ev_signal childev; 1404static ev_signal childev;
1125 1405
1126#ifndef WIFCONTINUED 1406#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0 1407# define WIFCONTINUED(status) 0
1128#endif 1408#endif
1129 1409
1130void inline_speed 1410/* handle a single child status event */
1411inline_speed void
1131child_reap (EV_P_ int chain, int pid, int status) 1412child_reap (EV_P_ int chain, int pid, int status)
1132{ 1413{
1133 ev_child *w; 1414 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1415 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135 1416
1136 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)
1137 { 1418 {
1138 if ((w->pid == pid || !w->pid) 1419 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1))) 1420 && (!traced || (w->flags & 1)))
1140 { 1421 {
1141 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 */
… …
1148 1429
1149#ifndef WCONTINUED 1430#ifndef WCONTINUED
1150# define WCONTINUED 0 1431# define WCONTINUED 0
1151#endif 1432#endif
1152 1433
1434/* called on sigchld etc., calls waitpid */
1153static void 1435static void
1154childcb (EV_P_ ev_signal *sw, int revents) 1436childcb (EV_P_ ev_signal *sw, int revents)
1155{ 1437{
1156 int pid, status; 1438 int pid, status;
1157 1439
… …
1165 /* 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 */
1166 /* 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 */
1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1449 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1168 1450
1169 child_reap (EV_A_ pid, pid, status); 1451 child_reap (EV_A_ pid, pid, status);
1170 if (EV_PID_HASHSIZE > 1) 1452 if ((EV_PID_HASHSIZE) > 1)
1171 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 */
1172} 1454}
1173 1455
1174#endif 1456#endif
1175 1457
… …
1238 /* kqueue is borked on everything but netbsd apparently */ 1520 /* kqueue is borked on everything but netbsd apparently */
1239 /* 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 */
1240 flags &= ~EVBACKEND_KQUEUE; 1522 flags &= ~EVBACKEND_KQUEUE;
1241#endif 1523#endif
1242#ifdef __APPLE__ 1524#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation 1525 /* only select works correctly on that "unix-certified" platform */
1244 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) */
1245#endif 1531#endif
1246 1532
1247 return flags; 1533 return flags;
1248} 1534}
1249 1535
… …
1263ev_backend (EV_P) 1549ev_backend (EV_P)
1264{ 1550{
1265 return backend; 1551 return backend;
1266} 1552}
1267 1553
1554#if EV_FEATURE_API
1268unsigned int 1555unsigned int
1269ev_loop_count (EV_P) 1556ev_iteration (EV_P)
1270{ 1557{
1271 return loop_count; 1558 return loop_count;
1272} 1559}
1273 1560
1561unsigned int
1562ev_depth (EV_P)
1563{
1564 return loop_depth;
1565}
1566
1274void 1567void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{ 1569{
1277 io_blocktime = interval; 1570 io_blocktime = interval;
1278} 1571}
… …
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{ 1575{
1283 timeout_blocktime = interval; 1576 timeout_blocktime = interval;
1284} 1577}
1285 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 */
1286static void noinline 1604static void noinline
1287loop_init (EV_P_ unsigned int flags) 1605loop_init (EV_P_ unsigned int flags)
1288{ 1606{
1289 if (!backend) 1607 if (!backend)
1290 { 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
1291#if EV_USE_MONOTONIC 1619#if EV_USE_MONOTONIC
1620 if (!have_monotonic)
1292 { 1621 {
1293 struct timespec ts; 1622 struct timespec ts;
1623
1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1624 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295 have_monotonic = 1; 1625 have_monotonic = 1;
1296 } 1626 }
1297#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"));
1298 1639
1299 ev_rt_now = ev_time (); 1640 ev_rt_now = ev_time ();
1300 mn_now = get_clock (); 1641 mn_now = get_clock ();
1301 now_floor = mn_now; 1642 now_floor = mn_now;
1302 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
1303 1647
1304 io_blocktime = 0.; 1648 io_blocktime = 0.;
1305 timeout_blocktime = 0.; 1649 timeout_blocktime = 0.;
1306 backend = 0; 1650 backend = 0;
1307 backend_fd = -1; 1651 backend_fd = -1;
1308 gotasync = 0; 1652 sig_pending = 0;
1653#if EV_ASYNC_ENABLE
1654 async_pending = 0;
1655#endif
1309#if EV_USE_INOTIFY 1656#if EV_USE_INOTIFY
1310 fs_fd = -2; 1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1311#endif 1658#endif
1312 1659#if EV_USE_SIGNALFD
1313 /* pid check not overridable via env */ 1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1314#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK)
1316 curpid = getpid ();
1317#endif 1661#endif
1318
1319 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS"))
1322 flags = atoi (getenv ("LIBEV_FLAGS"));
1323 1662
1324 if (!(flags & 0x0000ffffU)) 1663 if (!(flags & 0x0000ffffU))
1325 flags |= ev_recommended_backends (); 1664 flags |= ev_recommended_backends ();
1326 1665
1327#if EV_USE_PORT 1666#if EV_USE_PORT
… …
1338#endif 1677#endif
1339#if EV_USE_SELECT 1678#if EV_USE_SELECT
1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1679 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1341#endif 1680#endif
1342 1681
1682 ev_prepare_init (&pending_w, pendingcb);
1683
1684#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 ev_init (&pipeev, pipecb); 1685 ev_init (&pipe_w, pipecb);
1344 ev_set_priority (&pipeev, EV_MAXPRI); 1686 ev_set_priority (&pipe_w, EV_MAXPRI);
1687#endif
1345 } 1688 }
1346} 1689}
1347 1690
1691/* free up a loop structure */
1348static void noinline 1692static void noinline
1349loop_destroy (EV_P) 1693loop_destroy (EV_P)
1350{ 1694{
1351 int i; 1695 int i;
1352 1696
1353 if (ev_is_active (&pipeev)) 1697 if (ev_is_active (&pipe_w))
1354 { 1698 {
1355 ev_ref (EV_A); /* signal watcher */ 1699 /*ev_ref (EV_A);*/
1356 ev_io_stop (EV_A_ &pipeev); 1700 /*ev_io_stop (EV_A_ &pipe_w);*/
1357 1701
1358#if EV_USE_EVENTFD 1702#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1703 if (evfd >= 0)
1360 close (evfd); 1704 close (evfd);
1361#endif 1705#endif
1362 1706
1363 if (evpipe [0] >= 0) 1707 if (evpipe [0] >= 0)
1364 { 1708 {
1365 close (evpipe [0]); 1709 EV_WIN32_CLOSE_FD (evpipe [0]);
1366 close (evpipe [1]); 1710 EV_WIN32_CLOSE_FD (evpipe [1]);
1367 } 1711 }
1368 } 1712 }
1713
1714#if EV_USE_SIGNALFD
1715 if (ev_is_active (&sigfd_w))
1716 close (sigfd);
1717#endif
1369 1718
1370#if EV_USE_INOTIFY 1719#if EV_USE_INOTIFY
1371 if (fs_fd >= 0) 1720 if (fs_fd >= 0)
1372 close (fs_fd); 1721 close (fs_fd);
1373#endif 1722#endif
… …
1397#if EV_IDLE_ENABLE 1746#if EV_IDLE_ENABLE
1398 array_free (idle, [i]); 1747 array_free (idle, [i]);
1399#endif 1748#endif
1400 } 1749 }
1401 1750
1402 ev_free (anfds); anfdmax = 0; 1751 ev_free (anfds); anfds = 0; anfdmax = 0;
1403 1752
1404 /* 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);
1405 array_free (fdchange, EMPTY); 1755 array_free (fdchange, EMPTY);
1406 array_free (timer, EMPTY); 1756 array_free (timer, EMPTY);
1407#if EV_PERIODIC_ENABLE 1757#if EV_PERIODIC_ENABLE
1408 array_free (periodic, EMPTY); 1758 array_free (periodic, EMPTY);
1409#endif 1759#endif
… …
1418 1768
1419 backend = 0; 1769 backend = 0;
1420} 1770}
1421 1771
1422#if EV_USE_INOTIFY 1772#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P); 1773inline_size void infy_fork (EV_P);
1424#endif 1774#endif
1425 1775
1426void inline_size 1776inline_size void
1427loop_fork (EV_P) 1777loop_fork (EV_P)
1428{ 1778{
1429#if EV_USE_PORT 1779#if EV_USE_PORT
1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1780 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431#endif 1781#endif
… …
1437#endif 1787#endif
1438#if EV_USE_INOTIFY 1788#if EV_USE_INOTIFY
1439 infy_fork (EV_A); 1789 infy_fork (EV_A);
1440#endif 1790#endif
1441 1791
1442 if (ev_is_active (&pipeev)) 1792 if (ev_is_active (&pipe_w))
1443 { 1793 {
1444 /* this "locks" the handlers against writing to the pipe */ 1794 /* this "locks" the handlers against writing to the pipe */
1445 /* while we modify the fd vars */ 1795 /* while we modify the fd vars */
1446 gotsig = 1; 1796 sig_pending = 1;
1447#if EV_ASYNC_ENABLE 1797#if EV_ASYNC_ENABLE
1448 gotasync = 1; 1798 async_pending = 1;
1449#endif 1799#endif
1450 1800
1451 ev_ref (EV_A); 1801 ev_ref (EV_A);
1452 ev_io_stop (EV_A_ &pipeev); 1802 ev_io_stop (EV_A_ &pipe_w);
1453 1803
1454#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1805 if (evfd >= 0)
1456 close (evfd); 1806 close (evfd);
1457#endif 1807#endif
1458 1808
1459 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1460 { 1810 {
1461 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1813 }
1464 1814
1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1465 evpipe_init (EV_A); 1816 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */ 1817 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ); 1818 pipecb (EV_A_ &pipe_w, EV_READ);
1819#endif
1468 } 1820 }
1469 1821
1470 postfork = 0; 1822 postfork = 0;
1471} 1823}
1472 1824
1473#if EV_MULTIPLICITY 1825#if EV_MULTIPLICITY
1474 1826
1475struct ev_loop * 1827struct ev_loop *
1476ev_loop_new (unsigned int flags) 1828ev_loop_new (unsigned int flags)
1477{ 1829{
1478 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));
1479 1831
1480 memset (loop, 0, sizeof (struct ev_loop)); 1832 memset (EV_A, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags); 1833 loop_init (EV_A_ flags);
1483 1834
1484 if (ev_backend (EV_A)) 1835 if (ev_backend (EV_A))
1485 return loop; 1836 return EV_A;
1486 1837
1487 return 0; 1838 return 0;
1488} 1839}
1489 1840
1490void 1841void
… …
1497void 1848void
1498ev_loop_fork (EV_P) 1849ev_loop_fork (EV_P)
1499{ 1850{
1500 postfork = 1; /* must be in line with ev_default_fork */ 1851 postfork = 1; /* must be in line with ev_default_fork */
1501} 1852}
1853#endif /* multiplicity */
1502 1854
1503#if EV_VERIFY 1855#if EV_VERIFY
1504void noinline 1856static void noinline
1505verify_watcher (EV_P_ W w) 1857verify_watcher (EV_P_ W w)
1506{ 1858{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508 1860
1509 if (w->pending) 1861 if (w->pending)
1510 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));
1511} 1863}
1512 1864
1513static void noinline 1865static void noinline
1514verify_heap (EV_P_ ANHE *heap, int N) 1866verify_heap (EV_P_ ANHE *heap, int N)
1515{ 1867{
1516 int i; 1868 int i;
1517 1869
1518 for (i = HEAP0; i < N + HEAP0; ++i) 1870 for (i = HEAP0; i < N + HEAP0; ++i)
1519 { 1871 {
1520 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));
1521 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])));
1522 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]))));
1523 1875
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 } 1877 }
1526} 1878}
1527 1879
1528static void noinline 1880static void noinline
1529array_verify (EV_P_ W *ws, int cnt) 1881array_verify (EV_P_ W *ws, int cnt)
1530{ 1882{
1531 while (cnt--) 1883 while (cnt--)
1532 { 1884 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]); 1886 verify_watcher (EV_A_ ws [cnt]);
1535 } 1887 }
1536} 1888}
1537#endif 1889#endif
1538 1890
1891#if EV_FEATURE_API
1539void 1892void
1540ev_loop_verify (EV_P) 1893ev_verify (EV_P)
1541{ 1894{
1542#if EV_VERIFY 1895#if EV_VERIFY
1543 int i; 1896 int i;
1544 WL w; 1897 WL w;
1545 1898
1546 assert (activecnt >= -1); 1899 assert (activecnt >= -1);
1547 1900
1548 assert (fdchangemax >= fdchangecnt); 1901 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i) 1902 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1903 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551 1904
1552 assert (anfdmax >= 0); 1905 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i) 1906 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next) 1907 for (w = anfds [i].head; w; w = w->next)
1555 { 1908 {
1556 verify_watcher (EV_A_ (W)w); 1909 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1910 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558 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));
1559 } 1912 }
1560 1913
1561 assert (timermax >= timercnt); 1914 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt); 1915 verify_heap (EV_A_ timers, timercnt);
1563 1916
… …
1584#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1585 assert (asyncmax >= asynccnt); 1938 assert (asyncmax >= asynccnt);
1586 array_verify (EV_A_ (W *)asyncs, asynccnt); 1939 array_verify (EV_A_ (W *)asyncs, asynccnt);
1587#endif 1940#endif
1588 1941
1942#if EV_PREPARE_ENABLE
1589 assert (preparemax >= preparecnt); 1943 assert (preparemax >= preparecnt);
1590 array_verify (EV_A_ (W *)prepares, preparecnt); 1944 array_verify (EV_A_ (W *)prepares, preparecnt);
1945#endif
1591 1946
1947#if EV_CHECK_ENABLE
1592 assert (checkmax >= checkcnt); 1948 assert (checkmax >= checkcnt);
1593 array_verify (EV_A_ (W *)checks, checkcnt); 1949 array_verify (EV_A_ (W *)checks, checkcnt);
1950#endif
1594 1951
1595# if 0 1952# if 0
1953#if EV_CHILD_ENABLE
1596 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)
1597 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1955 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1956#endif
1598# endif 1957# endif
1599#endif 1958#endif
1600} 1959}
1601 1960#endif
1602#endif /* multiplicity */
1603 1961
1604#if EV_MULTIPLICITY 1962#if EV_MULTIPLICITY
1605struct ev_loop * 1963struct ev_loop *
1606ev_default_loop_init (unsigned int flags) 1964ev_default_loop_init (unsigned int flags)
1607#else 1965#else
… …
1610#endif 1968#endif
1611{ 1969{
1612 if (!ev_default_loop_ptr) 1970 if (!ev_default_loop_ptr)
1613 { 1971 {
1614#if EV_MULTIPLICITY 1972#if EV_MULTIPLICITY
1615 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1973 EV_P = ev_default_loop_ptr = &default_loop_struct;
1616#else 1974#else
1617 ev_default_loop_ptr = 1; 1975 ev_default_loop_ptr = 1;
1618#endif 1976#endif
1619 1977
1620 loop_init (EV_A_ flags); 1978 loop_init (EV_A_ flags);
1621 1979
1622 if (ev_backend (EV_A)) 1980 if (ev_backend (EV_A))
1623 { 1981 {
1624#ifndef _WIN32 1982#if EV_CHILD_ENABLE
1625 ev_signal_init (&childev, childcb, SIGCHLD); 1983 ev_signal_init (&childev, childcb, SIGCHLD);
1626 ev_set_priority (&childev, EV_MAXPRI); 1984 ev_set_priority (&childev, EV_MAXPRI);
1627 ev_signal_start (EV_A_ &childev); 1985 ev_signal_start (EV_A_ &childev);
1628 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1986 ev_unref (EV_A); /* child watcher should not keep loop alive */
1629#endif 1987#endif
… …
1637 1995
1638void 1996void
1639ev_default_destroy (void) 1997ev_default_destroy (void)
1640{ 1998{
1641#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1642 struct ev_loop *loop = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1643#endif 2001#endif
1644 2002
1645#ifndef _WIN32 2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
1646 ev_ref (EV_A); /* child watcher */ 2006 ev_ref (EV_A); /* child watcher */
1647 ev_signal_stop (EV_A_ &childev); 2007 ev_signal_stop (EV_A_ &childev);
1648#endif 2008#endif
1649 2009
1650 loop_destroy (EV_A); 2010 loop_destroy (EV_A);
… …
1652 2012
1653void 2013void
1654ev_default_fork (void) 2014ev_default_fork (void)
1655{ 2015{
1656#if EV_MULTIPLICITY 2016#if EV_MULTIPLICITY
1657 struct ev_loop *loop = ev_default_loop_ptr; 2017 EV_P = ev_default_loop_ptr;
1658#endif 2018#endif
1659 2019
1660 if (backend)
1661 postfork = 1; /* must be in line with ev_loop_fork */ 2020 postfork = 1; /* must be in line with ev_loop_fork */
1662} 2021}
1663 2022
1664/*****************************************************************************/ 2023/*****************************************************************************/
1665 2024
1666void 2025void
1667ev_invoke (EV_P_ void *w, int revents) 2026ev_invoke (EV_P_ void *w, int revents)
1668{ 2027{
1669 EV_CB_INVOKE ((W)w, revents); 2028 EV_CB_INVOKE ((W)w, revents);
1670} 2029}
1671 2030
1672void inline_speed 2031unsigned int
1673call_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)
1674{ 2045{
1675 int pri; 2046 int pri;
1676 2047
1677 for (pri = NUMPRI; pri--; ) 2048 for (pri = NUMPRI; pri--; )
1678 while (pendingcnt [pri]) 2049 while (pendingcnt [pri])
1679 { 2050 {
1680 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681 2052
1682 if (expect_true (p->w))
1683 {
1684 /*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 */
1685 2055
1686 p->w->pending = 0; 2056 p->w->pending = 0;
1687 EV_CB_INVOKE (p->w, p->events); 2057 EV_CB_INVOKE (p->w, p->events);
1688 EV_FREQUENT_CHECK; 2058 EV_FREQUENT_CHECK;
1689 }
1690 } 2059 }
1691} 2060}
1692 2061
1693#if EV_IDLE_ENABLE 2062#if EV_IDLE_ENABLE
1694void inline_size 2063/* make idle watchers pending. this handles the "call-idle */
2064/* only when higher priorities are idle" logic */
2065inline_size void
1695idle_reify (EV_P) 2066idle_reify (EV_P)
1696{ 2067{
1697 if (expect_false (idleall)) 2068 if (expect_false (idleall))
1698 { 2069 {
1699 int pri; 2070 int pri;
… …
1711 } 2082 }
1712 } 2083 }
1713} 2084}
1714#endif 2085#endif
1715 2086
1716void inline_size 2087/* make timers pending */
2088inline_size void
1717timers_reify (EV_P) 2089timers_reify (EV_P)
1718{ 2090{
1719 EV_FREQUENT_CHECK; 2091 EV_FREQUENT_CHECK;
1720 2092
1721 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2093 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722 { 2094 {
1723 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2095 do
1724
1725 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727 /* first reschedule or stop timer */
1728 if (w->repeat)
1729 { 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 {
1730 ev_at (w) += w->repeat; 2104 ev_at (w) += w->repeat;
1731 if (ev_at (w) < mn_now) 2105 if (ev_at (w) < mn_now)
1732 ev_at (w) = mn_now; 2106 ev_at (w) = mn_now;
1733 2107
1734 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.));
1735 2109
1736 ANHE_at_cache (timers [HEAP0]); 2110 ANHE_at_cache (timers [HEAP0]);
1737 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);
1738 } 2118 }
1739 else 2119 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741 2120
1742 EV_FREQUENT_CHECK; 2121 feed_reverse_done (EV_A_ EV_TIMER);
1743 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1744 } 2122 }
1745} 2123}
1746 2124
1747#if EV_PERIODIC_ENABLE 2125#if EV_PERIODIC_ENABLE
1748void inline_size 2126/* make periodics pending */
2127inline_size void
1749periodics_reify (EV_P) 2128periodics_reify (EV_P)
1750{ 2129{
1751 EV_FREQUENT_CHECK; 2130 EV_FREQUENT_CHECK;
1752 2131
1753 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2132 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754 { 2133 {
1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2134 int feed_count = 0;
1756 2135
1757 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2136 do
1758
1759 /* first reschedule or stop timer */
1760 if (w->reschedule_cb)
1761 { 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 {
1762 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2145 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763 2146
1764 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));
1765 2148
1766 ANHE_at_cache (periodics [HEAP0]); 2149 ANHE_at_cache (periodics [HEAP0]);
1767 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);
1768 } 2176 }
1769 else if (w->interval) 2177 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770 {
1771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772 /* if next trigger time is not sufficiently in the future, put it there */
1773 /* this might happen because of floating point inexactness */
1774 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775 {
1776 ev_at (w) += w->interval;
1777 2178
1778 /* if interval is unreasonably low we might still have a time in the past */
1779 /* so correct this. this will make the periodic very inexact, but the user */
1780 /* has effectively asked to get triggered more often than possible */
1781 if (ev_at (w) < ev_rt_now)
1782 ev_at (w) = ev_rt_now;
1783 }
1784
1785 ANHE_at_cache (periodics [HEAP0]);
1786 downheap (periodics, periodiccnt, HEAP0);
1787 }
1788 else
1789 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791 EV_FREQUENT_CHECK;
1792 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2179 feed_reverse_done (EV_A_ EV_PERIODIC);
1793 } 2180 }
1794} 2181}
1795 2182
2183/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1796static void noinline 2185static void noinline
1797periodics_reschedule (EV_P) 2186periodics_reschedule (EV_P)
1798{ 2187{
1799 int i; 2188 int i;
1800 2189
… …
1813 2202
1814 reheap (periodics, periodiccnt); 2203 reheap (periodics, periodiccnt);
1815} 2204}
1816#endif 2205#endif
1817 2206
1818void 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
1819time_update (EV_P_ ev_tstamp max_block) 2224time_update (EV_P_ ev_tstamp max_block)
1820{ 2225{
1821 int i;
1822
1823#if EV_USE_MONOTONIC 2226#if EV_USE_MONOTONIC
1824 if (expect_true (have_monotonic)) 2227 if (expect_true (have_monotonic))
1825 { 2228 {
2229 int i;
1826 ev_tstamp odiff = rtmn_diff; 2230 ev_tstamp odiff = rtmn_diff;
1827 2231
1828 mn_now = get_clock (); 2232 mn_now = get_clock ();
1829 2233
1830 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2234 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1856 ev_rt_now = ev_time (); 2260 ev_rt_now = ev_time ();
1857 mn_now = get_clock (); 2261 mn_now = get_clock ();
1858 now_floor = mn_now; 2262 now_floor = mn_now;
1859 } 2263 }
1860 2264
2265 /* no timer adjustment, as the monotonic clock doesn't jump */
2266 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861# if EV_PERIODIC_ENABLE 2267# if EV_PERIODIC_ENABLE
1862 periodics_reschedule (EV_A); 2268 periodics_reschedule (EV_A);
1863# endif 2269# endif
1864 /* no timer adjustment, as the monotonic clock doesn't jump */
1865 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866 } 2270 }
1867 else 2271 else
1868#endif 2272#endif
1869 { 2273 {
1870 ev_rt_now = ev_time (); 2274 ev_rt_now = ev_time ();
1871 2275
1872 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))
1873 { 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);
1874#if EV_PERIODIC_ENABLE 2280#if EV_PERIODIC_ENABLE
1875 periodics_reschedule (EV_A); 2281 periodics_reschedule (EV_A);
1876#endif 2282#endif
1877 /* adjust timers. this is easy, as the offset is the same for all of them */
1878 for (i = 0; i < timercnt; ++i)
1879 {
1880 ANHE *he = timers + i + HEAP0;
1881 ANHE_w (*he)->at += ev_rt_now - mn_now;
1882 ANHE_at_cache (*he);
1883 }
1884 } 2283 }
1885 2284
1886 mn_now = ev_rt_now; 2285 mn_now = ev_rt_now;
1887 } 2286 }
1888} 2287}
1889 2288
1890void 2289void
1891ev_ref (EV_P)
1892{
1893 ++activecnt;
1894}
1895
1896void
1897ev_unref (EV_P)
1898{
1899 --activecnt;
1900}
1901
1902static int loop_done;
1903
1904void
1905ev_loop (EV_P_ int flags) 2290ev_loop (EV_P_ int flags)
1906{ 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
1907 loop_done = EVUNLOOP_CANCEL; 2298 loop_done = EVUNLOOP_CANCEL;
1908 2299
1909 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 */
1910 2301
1911 do 2302 do
1912 { 2303 {
1913#if EV_VERIFY >= 2 2304#if EV_VERIFY >= 2
1914 ev_loop_verify (EV_A); 2305 ev_verify (EV_A);
1915#endif 2306#endif
1916 2307
1917#ifndef _WIN32 2308#ifndef _WIN32
1918 if (expect_false (curpid)) /* penalise the forking check even more */ 2309 if (expect_false (curpid)) /* penalise the forking check even more */
1919 if (expect_false (getpid () != curpid)) 2310 if (expect_false (getpid () != curpid))
… …
1927 /* we might have forked, so queue fork handlers */ 2318 /* we might have forked, so queue fork handlers */
1928 if (expect_false (postfork)) 2319 if (expect_false (postfork))
1929 if (forkcnt) 2320 if (forkcnt)
1930 { 2321 {
1931 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2322 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1932 call_pending (EV_A); 2323 EV_INVOKE_PENDING;
1933 } 2324 }
1934#endif 2325#endif
1935 2326
2327#if EV_PREPARE_ENABLE
1936 /* queue prepare watchers (and execute them) */ 2328 /* queue prepare watchers (and execute them) */
1937 if (expect_false (preparecnt)) 2329 if (expect_false (preparecnt))
1938 { 2330 {
1939 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2331 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1940 call_pending (EV_A); 2332 EV_INVOKE_PENDING;
1941 } 2333 }
2334#endif
1942 2335
1943 if (expect_false (!activecnt)) 2336 if (expect_false (loop_done))
1944 break; 2337 break;
1945 2338
1946 /* we might have forked, so reify kernel state if necessary */ 2339 /* we might have forked, so reify kernel state if necessary */
1947 if (expect_false (postfork)) 2340 if (expect_false (postfork))
1948 loop_fork (EV_A); 2341 loop_fork (EV_A);
… …
1955 ev_tstamp waittime = 0.; 2348 ev_tstamp waittime = 0.;
1956 ev_tstamp sleeptime = 0.; 2349 ev_tstamp sleeptime = 0.;
1957 2350
1958 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1959 { 2352 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
1960 /* update time to cancel out callback processing overhead */ 2356 /* update time to cancel out callback processing overhead */
1961 time_update (EV_A_ 1e100); 2357 time_update (EV_A_ 1e100);
1962 2358
1963 waittime = MAX_BLOCKTIME; 2359 waittime = MAX_BLOCKTIME;
1964 2360
… …
1974 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;
1975 if (waittime > to) waittime = to; 2371 if (waittime > to) waittime = to;
1976 } 2372 }
1977#endif 2373#endif
1978 2374
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */
1979 if (expect_false (waittime < timeout_blocktime)) 2376 if (expect_false (waittime < timeout_blocktime))
1980 waittime = timeout_blocktime; 2377 waittime = timeout_blocktime;
1981 2378
1982 sleeptime = waittime - backend_fudge; 2379 /* extra check because io_blocktime is commonly 0 */
1983
1984 if (expect_true (sleeptime > io_blocktime)) 2380 if (expect_false (io_blocktime))
1985 sleeptime = io_blocktime;
1986
1987 if (sleeptime)
1988 { 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 {
1989 ev_sleep (sleeptime); 2389 ev_sleep (sleeptime);
1990 waittime -= sleeptime; 2390 waittime -= sleeptime;
2391 }
1991 } 2392 }
1992 } 2393 }
1993 2394
2395#if EV_FEATURE_API
1994 ++loop_count; 2396 ++loop_count;
2397#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1995 backend_poll (EV_A_ waittime); 2399 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1996 2401
1997 /* update ev_rt_now, do magic */ 2402 /* update ev_rt_now, do magic */
1998 time_update (EV_A_ waittime + sleeptime); 2403 time_update (EV_A_ waittime + sleeptime);
1999 } 2404 }
2000 2405
… …
2007#if EV_IDLE_ENABLE 2412#if EV_IDLE_ENABLE
2008 /* queue idle watchers unless other events are pending */ 2413 /* queue idle watchers unless other events are pending */
2009 idle_reify (EV_A); 2414 idle_reify (EV_A);
2010#endif 2415#endif
2011 2416
2417#if EV_CHECK_ENABLE
2012 /* queue check watchers, to be executed first */ 2418 /* queue check watchers, to be executed first */
2013 if (expect_false (checkcnt)) 2419 if (expect_false (checkcnt))
2014 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2420 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2421#endif
2015 2422
2016 call_pending (EV_A); 2423 EV_INVOKE_PENDING;
2017 } 2424 }
2018 while (expect_true ( 2425 while (expect_true (
2019 activecnt 2426 activecnt
2020 && !loop_done 2427 && !loop_done
2021 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2022 )); 2429 ));
2023 2430
2024 if (loop_done == EVUNLOOP_ONE) 2431 if (loop_done == EVUNLOOP_ONE)
2025 loop_done = EVUNLOOP_CANCEL; 2432 loop_done = EVUNLOOP_CANCEL;
2433
2434#if EV_FEATURE_API
2435 --loop_depth;
2436#endif
2026} 2437}
2027 2438
2028void 2439void
2029ev_unloop (EV_P_ int how) 2440ev_unloop (EV_P_ int how)
2030{ 2441{
2031 loop_done = how; 2442 loop_done = how;
2032} 2443}
2033 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
2034/*****************************************************************************/ 2482/*****************************************************************************/
2483/* singly-linked list management, used when the expected list length is short */
2035 2484
2036void inline_size 2485inline_size void
2037wlist_add (WL *head, WL elem) 2486wlist_add (WL *head, WL elem)
2038{ 2487{
2039 elem->next = *head; 2488 elem->next = *head;
2040 *head = elem; 2489 *head = elem;
2041} 2490}
2042 2491
2043void inline_size 2492inline_size void
2044wlist_del (WL *head, WL elem) 2493wlist_del (WL *head, WL elem)
2045{ 2494{
2046 while (*head) 2495 while (*head)
2047 { 2496 {
2048 if (*head == elem) 2497 if (expect_true (*head == elem))
2049 { 2498 {
2050 *head = elem->next; 2499 *head = elem->next;
2051 return; 2500 break;
2052 } 2501 }
2053 2502
2054 head = &(*head)->next; 2503 head = &(*head)->next;
2055 } 2504 }
2056} 2505}
2057 2506
2058void inline_speed 2507/* internal, faster, version of ev_clear_pending */
2508inline_speed void
2059clear_pending (EV_P_ W w) 2509clear_pending (EV_P_ W w)
2060{ 2510{
2061 if (w->pending) 2511 if (w->pending)
2062 { 2512 {
2063 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2513 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2064 w->pending = 0; 2514 w->pending = 0;
2065 } 2515 }
2066} 2516}
2067 2517
2068int 2518int
… …
2072 int pending = w_->pending; 2522 int pending = w_->pending;
2073 2523
2074 if (expect_true (pending)) 2524 if (expect_true (pending))
2075 { 2525 {
2076 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2526 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2527 p->w = (W)&pending_w;
2077 w_->pending = 0; 2528 w_->pending = 0;
2078 p->w = 0;
2079 return p->events; 2529 return p->events;
2080 } 2530 }
2081 else 2531 else
2082 return 0; 2532 return 0;
2083} 2533}
2084 2534
2085void inline_size 2535inline_size void
2086pri_adjust (EV_P_ W w) 2536pri_adjust (EV_P_ W w)
2087{ 2537{
2088 int pri = w->priority; 2538 int pri = ev_priority (w);
2089 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2539 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2090 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2540 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2091 w->priority = pri; 2541 ev_set_priority (w, pri);
2092} 2542}
2093 2543
2094void inline_speed 2544inline_speed void
2095ev_start (EV_P_ W w, int active) 2545ev_start (EV_P_ W w, int active)
2096{ 2546{
2097 pri_adjust (EV_A_ w); 2547 pri_adjust (EV_A_ w);
2098 w->active = active; 2548 w->active = active;
2099 ev_ref (EV_A); 2549 ev_ref (EV_A);
2100} 2550}
2101 2551
2102void inline_size 2552inline_size void
2103ev_stop (EV_P_ W w) 2553ev_stop (EV_P_ W w)
2104{ 2554{
2105 ev_unref (EV_A); 2555 ev_unref (EV_A);
2106 w->active = 0; 2556 w->active = 0;
2107} 2557}
… …
2114 int fd = w->fd; 2564 int fd = w->fd;
2115 2565
2116 if (expect_false (ev_is_active (w))) 2566 if (expect_false (ev_is_active (w)))
2117 return; 2567 return;
2118 2568
2119 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))));
2120 2571
2121 EV_FREQUENT_CHECK; 2572 EV_FREQUENT_CHECK;
2122 2573
2123 ev_start (EV_A_ (W)w, 1); 2574 ev_start (EV_A_ (W)w, 1);
2124 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2125 wlist_add (&anfds[fd].head, (WL)w); 2576 wlist_add (&anfds[fd].head, (WL)w);
2126 2577
2127 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2578 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2128 w->events &= ~EV_IOFDSET; 2579 w->events &= ~EV__IOFDSET;
2129 2580
2130 EV_FREQUENT_CHECK; 2581 EV_FREQUENT_CHECK;
2131} 2582}
2132 2583
2133void noinline 2584void noinline
… …
2135{ 2586{
2136 clear_pending (EV_A_ (W)w); 2587 clear_pending (EV_A_ (W)w);
2137 if (expect_false (!ev_is_active (w))) 2588 if (expect_false (!ev_is_active (w)))
2138 return; 2589 return;
2139 2590
2140 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));
2141 2592
2142 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2143 2594
2144 wlist_del (&anfds[w->fd].head, (WL)w); 2595 wlist_del (&anfds[w->fd].head, (WL)w);
2145 ev_stop (EV_A_ (W)w); 2596 ev_stop (EV_A_ (W)w);
… …
2155 if (expect_false (ev_is_active (w))) 2606 if (expect_false (ev_is_active (w)))
2156 return; 2607 return;
2157 2608
2158 ev_at (w) += mn_now; 2609 ev_at (w) += mn_now;
2159 2610
2160 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.));
2161 2612
2162 EV_FREQUENT_CHECK; 2613 EV_FREQUENT_CHECK;
2163 2614
2164 ++timercnt; 2615 ++timercnt;
2165 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2616 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2168 ANHE_at_cache (timers [ev_active (w)]); 2619 ANHE_at_cache (timers [ev_active (w)]);
2169 upheap (timers, ev_active (w)); 2620 upheap (timers, ev_active (w));
2170 2621
2171 EV_FREQUENT_CHECK; 2622 EV_FREQUENT_CHECK;
2172 2623
2173 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2624 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2174} 2625}
2175 2626
2176void noinline 2627void noinline
2177ev_timer_stop (EV_P_ ev_timer *w) 2628ev_timer_stop (EV_P_ ev_timer *w)
2178{ 2629{
… …
2183 EV_FREQUENT_CHECK; 2634 EV_FREQUENT_CHECK;
2184 2635
2185 { 2636 {
2186 int active = ev_active (w); 2637 int active = ev_active (w);
2187 2638
2188 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2639 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2189 2640
2190 --timercnt; 2641 --timercnt;
2191 2642
2192 if (expect_true (active < timercnt + HEAP0)) 2643 if (expect_true (active < timercnt + HEAP0))
2193 { 2644 {
2194 timers [active] = timers [timercnt + HEAP0]; 2645 timers [active] = timers [timercnt + HEAP0];
2195 adjustheap (timers, timercnt, active); 2646 adjustheap (timers, timercnt, active);
2196 } 2647 }
2197 } 2648 }
2198 2649
2199 EV_FREQUENT_CHECK;
2200
2201 ev_at (w) -= mn_now; 2650 ev_at (w) -= mn_now;
2202 2651
2203 ev_stop (EV_A_ (W)w); 2652 ev_stop (EV_A_ (W)w);
2653
2654 EV_FREQUENT_CHECK;
2204} 2655}
2205 2656
2206void noinline 2657void noinline
2207ev_timer_again (EV_P_ ev_timer *w) 2658ev_timer_again (EV_P_ ev_timer *w)
2208{ 2659{
… …
2226 } 2677 }
2227 2678
2228 EV_FREQUENT_CHECK; 2679 EV_FREQUENT_CHECK;
2229} 2680}
2230 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
2231#if EV_PERIODIC_ENABLE 2688#if EV_PERIODIC_ENABLE
2232void noinline 2689void noinline
2233ev_periodic_start (EV_P_ ev_periodic *w) 2690ev_periodic_start (EV_P_ ev_periodic *w)
2234{ 2691{
2235 if (expect_false (ev_is_active (w))) 2692 if (expect_false (ev_is_active (w)))
… …
2237 2694
2238 if (w->reschedule_cb) 2695 if (w->reschedule_cb)
2239 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2240 else if (w->interval) 2697 else if (w->interval)
2241 { 2698 {
2242 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.));
2243 /* 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 */
2244 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;
2245 } 2702 }
2246 else 2703 else
2247 ev_at (w) = w->offset; 2704 ev_at (w) = w->offset;
… …
2255 ANHE_at_cache (periodics [ev_active (w)]); 2712 ANHE_at_cache (periodics [ev_active (w)]);
2256 upheap (periodics, ev_active (w)); 2713 upheap (periodics, ev_active (w));
2257 2714
2258 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2259 2716
2260 /*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));*/
2261} 2718}
2262 2719
2263void noinline 2720void noinline
2264ev_periodic_stop (EV_P_ ev_periodic *w) 2721ev_periodic_stop (EV_P_ ev_periodic *w)
2265{ 2722{
… …
2270 EV_FREQUENT_CHECK; 2727 EV_FREQUENT_CHECK;
2271 2728
2272 { 2729 {
2273 int active = ev_active (w); 2730 int active = ev_active (w);
2274 2731
2275 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2732 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2276 2733
2277 --periodiccnt; 2734 --periodiccnt;
2278 2735
2279 if (expect_true (active < periodiccnt + HEAP0)) 2736 if (expect_true (active < periodiccnt + HEAP0))
2280 { 2737 {
2281 periodics [active] = periodics [periodiccnt + HEAP0]; 2738 periodics [active] = periodics [periodiccnt + HEAP0];
2282 adjustheap (periodics, periodiccnt, active); 2739 adjustheap (periodics, periodiccnt, active);
2283 } 2740 }
2284 } 2741 }
2285 2742
2286 EV_FREQUENT_CHECK;
2287
2288 ev_stop (EV_A_ (W)w); 2743 ev_stop (EV_A_ (W)w);
2744
2745 EV_FREQUENT_CHECK;
2289} 2746}
2290 2747
2291void noinline 2748void noinline
2292ev_periodic_again (EV_P_ ev_periodic *w) 2749ev_periodic_again (EV_P_ ev_periodic *w)
2293{ 2750{
… …
2299 2756
2300#ifndef SA_RESTART 2757#ifndef SA_RESTART
2301# define SA_RESTART 0 2758# define SA_RESTART 0
2302#endif 2759#endif
2303 2760
2761#if EV_SIGNAL_ENABLE
2762
2304void noinline 2763void noinline
2305ev_signal_start (EV_P_ ev_signal *w) 2764ev_signal_start (EV_P_ ev_signal *w)
2306{ 2765{
2307#if EV_MULTIPLICITY
2308 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2309#endif
2310 if (expect_false (ev_is_active (w))) 2766 if (expect_false (ev_is_active (w)))
2311 return; 2767 return;
2312 2768
2313 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));
2314 2770
2315 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));
2316 2774
2317 EV_FREQUENT_CHECK; 2775 signals [w->signum - 1].loop = EV_A;
2776#endif
2318 2777
2778 EV_FREQUENT_CHECK;
2779
2780#if EV_USE_SIGNALFD
2781 if (sigfd == -2)
2319 { 2782 {
2320#ifndef _WIN32 2783 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2321 sigset_t full, prev; 2784 if (sigfd < 0 && errno == EINVAL)
2322 sigfillset (&full); 2785 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2323 sigprocmask (SIG_SETMASK, &full, &prev);
2324#endif
2325 2786
2326 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2787 if (sigfd >= 0)
2788 {
2789 fd_intern (sigfd); /* doing it twice will not hurt */
2327 2790
2328#ifndef _WIN32 2791 sigemptyset (&sigfd_set);
2329 sigprocmask (SIG_SETMASK, &prev, 0); 2792
2330#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 }
2331 } 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
2332 2809
2333 ev_start (EV_A_ (W)w, 1); 2810 ev_start (EV_A_ (W)w, 1);
2334 wlist_add (&signals [w->signum - 1].head, (WL)w); 2811 wlist_add (&signals [w->signum - 1].head, (WL)w);
2335 2812
2336 if (!((WL)w)->next) 2813 if (!((WL)w)->next)
2814# if EV_USE_SIGNALFD
2815 if (sigfd < 0) /*TODO*/
2816# endif
2337 { 2817 {
2338#if _WIN32 2818# ifdef _WIN32
2819 evpipe_init (EV_A);
2820
2339 signal (w->signum, ev_sighandler); 2821 signal (w->signum, ev_sighandler);
2340#else 2822# else
2341 struct sigaction sa; 2823 struct sigaction sa;
2824
2825 evpipe_init (EV_A);
2826
2342 sa.sa_handler = ev_sighandler; 2827 sa.sa_handler = ev_sighandler;
2343 sigfillset (&sa.sa_mask); 2828 sigfillset (&sa.sa_mask);
2344 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 */
2345 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);
2346#endif 2835#endif
2347 } 2836 }
2348 2837
2349 EV_FREQUENT_CHECK; 2838 EV_FREQUENT_CHECK;
2350} 2839}
2351 2840
2352void noinline 2841void noinline
… …
2360 2849
2361 wlist_del (&signals [w->signum - 1].head, (WL)w); 2850 wlist_del (&signals [w->signum - 1].head, (WL)w);
2362 ev_stop (EV_A_ (W)w); 2851 ev_stop (EV_A_ (W)w);
2363 2852
2364 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
2365 signal (w->signum, SIG_DFL); 2872 signal (w->signum, SIG_DFL);
2873 }
2366 2874
2367 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2368} 2876}
2877
2878#endif
2879
2880#if EV_CHILD_ENABLE
2369 2881
2370void 2882void
2371ev_child_start (EV_P_ ev_child *w) 2883ev_child_start (EV_P_ ev_child *w)
2372{ 2884{
2373#if EV_MULTIPLICITY 2885#if EV_MULTIPLICITY
2374 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));
2375#endif 2887#endif
2376 if (expect_false (ev_is_active (w))) 2888 if (expect_false (ev_is_active (w)))
2377 return; 2889 return;
2378 2890
2379 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2380 2892
2381 ev_start (EV_A_ (W)w, 1); 2893 ev_start (EV_A_ (W)w, 1);
2382 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2894 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2383 2895
2384 EV_FREQUENT_CHECK; 2896 EV_FREQUENT_CHECK;
2385} 2897}
2386 2898
2387void 2899void
… …
2391 if (expect_false (!ev_is_active (w))) 2903 if (expect_false (!ev_is_active (w)))
2392 return; 2904 return;
2393 2905
2394 EV_FREQUENT_CHECK; 2906 EV_FREQUENT_CHECK;
2395 2907
2396 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2908 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2397 ev_stop (EV_A_ (W)w); 2909 ev_stop (EV_A_ (W)w);
2398 2910
2399 EV_FREQUENT_CHECK; 2911 EV_FREQUENT_CHECK;
2400} 2912}
2913
2914#endif
2401 2915
2402#if EV_STAT_ENABLE 2916#if EV_STAT_ENABLE
2403 2917
2404# ifdef _WIN32 2918# ifdef _WIN32
2405# undef lstat 2919# undef lstat
2406# define lstat(a,b) _stati64 (a,b) 2920# define lstat(a,b) _stati64 (a,b)
2407# endif 2921# endif
2408 2922
2409#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 */
2410#define MIN_STAT_INTERVAL 0.1074891 2925#define MIN_STAT_INTERVAL 0.1074891
2411 2926
2412static 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);
2413 2928
2414#if EV_USE_INOTIFY 2929#if EV_USE_INOTIFY
2415# 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)
2416 2933
2417static void noinline 2934static void noinline
2418infy_add (EV_P_ ev_stat *w) 2935infy_add (EV_P_ ev_stat *w)
2419{ 2936{
2420 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);
2421 2938
2422 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 */
2423 { 2959 }
2424 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;
2425 2964
2426 /* monitor some parent directory for speedup hints */ 2965 /* if path is not there, monitor some parent directory for speedup hints */
2427 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2966 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2428 /* but an efficiency issue only */ 2967 /* but an efficiency issue only */
2429 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2968 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2430 { 2969 {
2431 char path [4096]; 2970 char path [4096];
2432 strcpy (path, w->path); 2971 strcpy (path, w->path);
… …
2436 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2975 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2437 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2976 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2438 2977
2439 char *pend = strrchr (path, '/'); 2978 char *pend = strrchr (path, '/');
2440 2979
2441 if (!pend) 2980 if (!pend || pend == path)
2442 break; /* whoops, no '/', complain to your admin */ 2981 break;
2443 2982
2444 *pend = 0; 2983 *pend = 0;
2445 w->wd = inotify_add_watch (fs_fd, path, mask); 2984 w->wd = inotify_add_watch (fs_fd, path, mask);
2446 } 2985 }
2447 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2448 } 2987 }
2449 } 2988 }
2450 else
2451 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2452 2989
2453 if (w->wd >= 0) 2990 if (w->wd >= 0)
2454 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);
2455} 2997}
2456 2998
2457static void noinline 2999static void noinline
2458infy_del (EV_P_ ev_stat *w) 3000infy_del (EV_P_ ev_stat *w)
2459{ 3001{
… …
2462 3004
2463 if (wd < 0) 3005 if (wd < 0)
2464 return; 3006 return;
2465 3007
2466 w->wd = -2; 3008 w->wd = -2;
2467 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3009 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2468 wlist_del (&fs_hash [slot].head, (WL)w); 3010 wlist_del (&fs_hash [slot].head, (WL)w);
2469 3011
2470 /* remove this watcher, if others are watching it, they will rearm */ 3012 /* remove this watcher, if others are watching it, they will rearm */
2471 inotify_rm_watch (fs_fd, wd); 3013 inotify_rm_watch (fs_fd, wd);
2472} 3014}
2473 3015
2474static void noinline 3016static void noinline
2475infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3017infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2476{ 3018{
2477 if (slot < 0) 3019 if (slot < 0)
2478 /* overflow, need to check for all hahs slots */ 3020 /* overflow, need to check for all hash slots */
2479 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3021 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2480 infy_wd (EV_A_ slot, wd, ev); 3022 infy_wd (EV_A_ slot, wd, ev);
2481 else 3023 else
2482 { 3024 {
2483 WL w_; 3025 WL w_;
2484 3026
2485 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3027 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2486 { 3028 {
2487 ev_stat *w = (ev_stat *)w_; 3029 ev_stat *w = (ev_stat *)w_;
2488 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 */
2489 3031
2490 if (w->wd == wd || wd == -1) 3032 if (w->wd == wd || wd == -1)
2491 { 3033 {
2492 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3034 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2493 { 3035 {
3036 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2494 w->wd = -1; 3037 w->wd = -1;
2495 infy_add (EV_A_ w); /* re-add, no matter what */ 3038 infy_add (EV_A_ w); /* re-add, no matter what */
2496 } 3039 }
2497 3040
2498 stat_timer_cb (EV_A_ &w->timer, 0); 3041 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2503 3046
2504static void 3047static void
2505infy_cb (EV_P_ ev_io *w, int revents) 3048infy_cb (EV_P_ ev_io *w, int revents)
2506{ 3049{
2507 char buf [EV_INOTIFY_BUFSIZE]; 3050 char buf [EV_INOTIFY_BUFSIZE];
2508 struct inotify_event *ev = (struct inotify_event *)buf;
2509 int ofs; 3051 int ofs;
2510 int len = read (fs_fd, buf, sizeof (buf)); 3052 int len = read (fs_fd, buf, sizeof (buf));
2511 3053
2512 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);
2513 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 }
2514} 3060}
2515 3061
2516void 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
2517infy_init (EV_P) 3118infy_init (EV_P)
2518{ 3119{
2519 if (fs_fd != -2) 3120 if (fs_fd != -2)
2520 return; 3121 return;
2521 3122
3123 fs_fd = -1;
3124
3125 ev_check_2625 (EV_A);
3126
2522 fs_fd = inotify_init (); 3127 fs_fd = infy_newfd ();
2523 3128
2524 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
2525 { 3130 {
3131 fd_intern (fs_fd);
2526 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3132 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2527 ev_set_priority (&fs_w, EV_MAXPRI); 3133 ev_set_priority (&fs_w, EV_MAXPRI);
2528 ev_io_start (EV_A_ &fs_w); 3134 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A);
2529 } 3136 }
2530} 3137}
2531 3138
2532void inline_size 3139inline_size void
2533infy_fork (EV_P) 3140infy_fork (EV_P)
2534{ 3141{
2535 int slot; 3142 int slot;
2536 3143
2537 if (fs_fd < 0) 3144 if (fs_fd < 0)
2538 return; 3145 return;
2539 3146
3147 ev_ref (EV_A);
3148 ev_io_stop (EV_A_ &fs_w);
2540 close (fs_fd); 3149 close (fs_fd);
2541 fs_fd = inotify_init (); 3150 fs_fd = infy_newfd ();
2542 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
2543 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3160 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2544 { 3161 {
2545 WL w_ = fs_hash [slot].head; 3162 WL w_ = fs_hash [slot].head;
2546 fs_hash [slot].head = 0; 3163 fs_hash [slot].head = 0;
2547 3164
2548 while (w_) 3165 while (w_)
… …
2553 w->wd = -1; 3170 w->wd = -1;
2554 3171
2555 if (fs_fd >= 0) 3172 if (fs_fd >= 0)
2556 infy_add (EV_A_ w); /* re-add, no matter what */ 3173 infy_add (EV_A_ w); /* re-add, no matter what */
2557 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);
2558 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 }
2559 } 3181 }
2560
2561 } 3182 }
2562} 3183}
2563 3184
3185#endif
3186
3187#ifdef _WIN32
3188# define EV_LSTAT(p,b) _stati64 (p, b)
3189#else
3190# define EV_LSTAT(p,b) lstat (p, b)
2564#endif 3191#endif
2565 3192
2566void 3193void
2567ev_stat_stat (EV_P_ ev_stat *w) 3194ev_stat_stat (EV_P_ ev_stat *w)
2568{ 3195{
… …
2575static void noinline 3202static void noinline
2576stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3203stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2577{ 3204{
2578 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3205 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2579 3206
2580 /* we copy this here each the time so that */ 3207 ev_statdata prev = w->attr;
2581 /* prev has the old value when the callback gets invoked */
2582 w->prev = w->attr;
2583 ev_stat_stat (EV_A_ w); 3208 ev_stat_stat (EV_A_ w);
2584 3209
2585 /* 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 */
2586 if ( 3211 if (
2587 w->prev.st_dev != w->attr.st_dev 3212 prev.st_dev != w->attr.st_dev
2588 || w->prev.st_ino != w->attr.st_ino 3213 || prev.st_ino != w->attr.st_ino
2589 || w->prev.st_mode != w->attr.st_mode 3214 || prev.st_mode != w->attr.st_mode
2590 || w->prev.st_nlink != w->attr.st_nlink 3215 || prev.st_nlink != w->attr.st_nlink
2591 || w->prev.st_uid != w->attr.st_uid 3216 || prev.st_uid != w->attr.st_uid
2592 || w->prev.st_gid != w->attr.st_gid 3217 || prev.st_gid != w->attr.st_gid
2593 || w->prev.st_rdev != w->attr.st_rdev 3218 || prev.st_rdev != w->attr.st_rdev
2594 || w->prev.st_size != w->attr.st_size 3219 || prev.st_size != w->attr.st_size
2595 || w->prev.st_atime != w->attr.st_atime 3220 || prev.st_atime != w->attr.st_atime
2596 || w->prev.st_mtime != w->attr.st_mtime 3221 || prev.st_mtime != w->attr.st_mtime
2597 || w->prev.st_ctime != w->attr.st_ctime 3222 || prev.st_ctime != w->attr.st_ctime
2598 ) { 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
2599 #if EV_USE_INOTIFY 3229 #if EV_USE_INOTIFY
3230 if (fs_fd >= 0)
3231 {
2600 infy_del (EV_A_ w); 3232 infy_del (EV_A_ w);
2601 infy_add (EV_A_ w); 3233 infy_add (EV_A_ w);
2602 ev_stat_stat (EV_A_ w); /* avoid race... */ 3234 ev_stat_stat (EV_A_ w); /* avoid race... */
3235 }
2603 #endif 3236 #endif
2604 3237
2605 ev_feed_event (EV_A_ w, EV_STAT); 3238 ev_feed_event (EV_A_ w, EV_STAT);
2606 } 3239 }
2607} 3240}
… …
2610ev_stat_start (EV_P_ ev_stat *w) 3243ev_stat_start (EV_P_ ev_stat *w)
2611{ 3244{
2612 if (expect_false (ev_is_active (w))) 3245 if (expect_false (ev_is_active (w)))
2613 return; 3246 return;
2614 3247
2615 /* since we use memcmp, we need to clear any padding data etc. */
2616 memset (&w->prev, 0, sizeof (ev_statdata));
2617 memset (&w->attr, 0, sizeof (ev_statdata));
2618
2619 ev_stat_stat (EV_A_ w); 3248 ev_stat_stat (EV_A_ w);
2620 3249
3250 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2621 if (w->interval < MIN_STAT_INTERVAL) 3251 w->interval = MIN_STAT_INTERVAL;
2622 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623 3252
2624 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);
2625 ev_set_priority (&w->timer, ev_priority (w)); 3254 ev_set_priority (&w->timer, ev_priority (w));
2626 3255
2627#if EV_USE_INOTIFY 3256#if EV_USE_INOTIFY
2628 infy_init (EV_A); 3257 infy_init (EV_A);
2629 3258
2630 if (fs_fd >= 0) 3259 if (fs_fd >= 0)
2631 infy_add (EV_A_ w); 3260 infy_add (EV_A_ w);
2632 else 3261 else
2633#endif 3262#endif
3263 {
2634 ev_timer_start (EV_A_ &w->timer); 3264 ev_timer_again (EV_A_ &w->timer);
3265 ev_unref (EV_A);
3266 }
2635 3267
2636 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2637 3269
2638 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2639} 3271}
… …
2648 EV_FREQUENT_CHECK; 3280 EV_FREQUENT_CHECK;
2649 3281
2650#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2651 infy_del (EV_A_ w); 3283 infy_del (EV_A_ w);
2652#endif 3284#endif
3285
3286 if (ev_is_active (&w->timer))
3287 {
3288 ev_ref (EV_A);
2653 ev_timer_stop (EV_A_ &w->timer); 3289 ev_timer_stop (EV_A_ &w->timer);
3290 }
2654 3291
2655 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2656 3293
2657 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
2658} 3295}
… …
2703 3340
2704 EV_FREQUENT_CHECK; 3341 EV_FREQUENT_CHECK;
2705} 3342}
2706#endif 3343#endif
2707 3344
3345#if EV_PREPARE_ENABLE
2708void 3346void
2709ev_prepare_start (EV_P_ ev_prepare *w) 3347ev_prepare_start (EV_P_ ev_prepare *w)
2710{ 3348{
2711 if (expect_false (ev_is_active (w))) 3349 if (expect_false (ev_is_active (w)))
2712 return; 3350 return;
… …
2738 3376
2739 ev_stop (EV_A_ (W)w); 3377 ev_stop (EV_A_ (W)w);
2740 3378
2741 EV_FREQUENT_CHECK; 3379 EV_FREQUENT_CHECK;
2742} 3380}
3381#endif
2743 3382
3383#if EV_CHECK_ENABLE
2744void 3384void
2745ev_check_start (EV_P_ ev_check *w) 3385ev_check_start (EV_P_ ev_check *w)
2746{ 3386{
2747 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2748 return; 3388 return;
… …
2774 3414
2775 ev_stop (EV_A_ (W)w); 3415 ev_stop (EV_A_ (W)w);
2776 3416
2777 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
2778} 3418}
3419#endif
2779 3420
2780#if EV_EMBED_ENABLE 3421#if EV_EMBED_ENABLE
2781void noinline 3422void noinline
2782ev_embed_sweep (EV_P_ ev_embed *w) 3423ev_embed_sweep (EV_P_ ev_embed *w)
2783{ 3424{
… …
2799embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2800{ 3441{
2801 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3442 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2802 3443
2803 { 3444 {
2804 struct ev_loop *loop = w->other; 3445 EV_P = w->other;
2805 3446
2806 while (fdchangecnt) 3447 while (fdchangecnt)
2807 { 3448 {
2808 fd_reify (EV_A); 3449 fd_reify (EV_A);
2809 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3450 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2810 } 3451 }
2811 } 3452 }
2812} 3453}
2813 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
2814#if 0 3472#if 0
2815static void 3473static void
2816embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3474embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2817{ 3475{
2818 ev_idle_stop (EV_A_ idle); 3476 ev_idle_stop (EV_A_ idle);
… …
2824{ 3482{
2825 if (expect_false (ev_is_active (w))) 3483 if (expect_false (ev_is_active (w)))
2826 return; 3484 return;
2827 3485
2828 { 3486 {
2829 struct ev_loop *loop = w->other; 3487 EV_P = w->other;
2830 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 ()));
2831 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);
2832 } 3490 }
2833 3491
2834 EV_FREQUENT_CHECK; 3492 EV_FREQUENT_CHECK;
2835 3493
… …
2838 3496
2839 ev_prepare_init (&w->prepare, embed_prepare_cb); 3497 ev_prepare_init (&w->prepare, embed_prepare_cb);
2840 ev_set_priority (&w->prepare, EV_MINPRI); 3498 ev_set_priority (&w->prepare, EV_MINPRI);
2841 ev_prepare_start (EV_A_ &w->prepare); 3499 ev_prepare_start (EV_A_ &w->prepare);
2842 3500
3501 ev_fork_init (&w->fork, embed_fork_cb);
3502 ev_fork_start (EV_A_ &w->fork);
3503
2843 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3504 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2844 3505
2845 ev_start (EV_A_ (W)w, 1); 3506 ev_start (EV_A_ (W)w, 1);
2846 3507
2847 EV_FREQUENT_CHECK; 3508 EV_FREQUENT_CHECK;
… …
2854 if (expect_false (!ev_is_active (w))) 3515 if (expect_false (!ev_is_active (w)))
2855 return; 3516 return;
2856 3517
2857 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2858 3519
2859 ev_io_stop (EV_A_ &w->io); 3520 ev_io_stop (EV_A_ &w->io);
2860 ev_prepare_stop (EV_A_ &w->prepare); 3521 ev_prepare_stop (EV_A_ &w->prepare);
3522 ev_fork_stop (EV_A_ &w->fork);
2861 3523
2862 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2863 3525
2864 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2865} 3527}
… …
2944 3606
2945void 3607void
2946ev_async_send (EV_P_ ev_async *w) 3608ev_async_send (EV_P_ ev_async *w)
2947{ 3609{
2948 w->sent = 1; 3610 w->sent = 1;
2949 evpipe_write (EV_A_ &gotasync); 3611 evpipe_write (EV_A_ &async_pending);
2950} 3612}
2951#endif 3613#endif
2952 3614
2953/*****************************************************************************/ 3615/*****************************************************************************/
2954 3616
… …
2964once_cb (EV_P_ struct ev_once *once, int revents) 3626once_cb (EV_P_ struct ev_once *once, int revents)
2965{ 3627{
2966 void (*cb)(int revents, void *arg) = once->cb; 3628 void (*cb)(int revents, void *arg) = once->cb;
2967 void *arg = once->arg; 3629 void *arg = once->arg;
2968 3630
2969 ev_io_stop (EV_A_ &once->io); 3631 ev_io_stop (EV_A_ &once->io);
2970 ev_timer_stop (EV_A_ &once->to); 3632 ev_timer_stop (EV_A_ &once->to);
2971 ev_free (once); 3633 ev_free (once);
2972 3634
2973 cb (revents, arg); 3635 cb (revents, arg);
2974} 3636}
2975 3637
2976static void 3638static void
2977once_cb_io (EV_P_ ev_io *w, int revents) 3639once_cb_io (EV_P_ ev_io *w, int revents)
2978{ 3640{
2979 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));
2980} 3644}
2981 3645
2982static void 3646static void
2983once_cb_to (EV_P_ ev_timer *w, int revents) 3647once_cb_to (EV_P_ ev_timer *w, int revents)
2984{ 3648{
2985 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));
2986} 3652}
2987 3653
2988void 3654void
2989ev_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)
2990{ 3656{
2991 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));
2992 3658
2993 if (expect_false (!once)) 3659 if (expect_false (!once))
2994 { 3660 {
2995 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3661 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2996 return; 3662 return;
2997 } 3663 }
2998 3664
2999 once->cb = cb; 3665 once->cb = cb;
3000 once->arg = arg; 3666 once->arg = arg;
… …
3012 ev_timer_set (&once->to, timeout, 0.); 3678 ev_timer_set (&once->to, timeout, 0.);
3013 ev_timer_start (EV_A_ &once->to); 3679 ev_timer_start (EV_A_ &once->to);
3014 } 3680 }
3015} 3681}
3016 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
3017#if EV_MULTIPLICITY 3799#if EV_MULTIPLICITY
3018 #include "ev_wrap.h" 3800 #include "ev_wrap.h"
3019#endif 3801#endif
3020 3802
3021#ifdef __cplusplus 3803#ifdef __cplusplus

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