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Comparing libev/ev.c (file contents):
Revision 1.253 by root, Sat May 31 03:13:27 2008 UTC vs.
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
74# endif 98# endif
75 99
100# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
89# endif
90# endif 107# endif
91 108
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
95# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
98# endif 116# endif
99 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
106# endif 125# endif
107 126
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
111# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
114# endif 134# endif
115 135
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
122# endif 143# endif
123 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
154#ifndef _WIN32 187#ifndef _WIN32
155# include <sys/time.h> 188# include <sys/time.h>
156# include <sys/wait.h> 189# include <sys/wait.h>
157# include <unistd.h> 190# include <unistd.h>
158#else 191#else
192# include <io.h>
159# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 194# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
163# endif 197# endif
198# undef EV_AVOID_STDIO
164#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
165 208
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
238
239#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else
243# define EV_USE_CLOCK_SYSCALL 0
244# endif
245#endif
167 246
168#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
171# else 250# else
172# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
173# endif 252# endif
174#endif 253#endif
175 254
176#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178#endif 257#endif
179 258
180#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
183# else 262# else
184# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
185# endif 264# endif
186#endif 265#endif
187 266
188#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
189# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
190#endif 269#endif
191 270
192#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
193# ifdef _WIN32 272# ifdef _WIN32
194# define EV_USE_POLL 0 273# define EV_USE_POLL 0
195# else 274# else
196# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
197# endif 276# endif
198#endif 277#endif
199 278
200#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
203# else 282# else
204# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
205# endif 284# endif
206#endif 285#endif
207 286
… …
213# define EV_USE_PORT 0 292# define EV_USE_PORT 0
214#endif 293#endif
215 294
216#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
218# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
219# else 298# else
220# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
221# endif 300# endif
222#endif 301#endif
223 302
224#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
225# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_PID_HASHSIZE 1
227# else
228# define EV_PID_HASHSIZE 16
229# endif
230#endif 305#endif
231 306
232#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
233# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
234# define EV_INOTIFY_HASHSIZE 1
235# else
236# define EV_INOTIFY_HASHSIZE 16
237# endif
238#endif 309#endif
239 310
240#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
243# else 314# else
244# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
316# endif
317#endif
318
319#ifndef EV_USE_SIGNALFD
320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
321# define EV_USE_SIGNALFD EV_FEATURE_OS
322# else
323# define EV_USE_SIGNALFD 0
245# endif 324# endif
246#endif 325#endif
247 326
248#if 0 /* debugging */ 327#if 0 /* debugging */
249# define EV_VERIFY 3 328# define EV_VERIFY 3
250# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
252#endif 331#endif
253 332
254#ifndef EV_VERIFY 333#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
256#endif 335#endif
257 336
258#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
260#endif 339#endif
261 340
262#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif
344
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h>
349# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1
353# else
354# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0
356# endif
264#endif 357#endif
265 358
266/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 359/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
267 366
268#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
269# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
270# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
271#endif 370#endif
… …
285# include <sys/select.h> 384# include <sys/select.h>
286# endif 385# endif
287#endif 386#endif
288 387
289#if EV_USE_INOTIFY 388#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h>
290# include <sys/inotify.h> 391# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0
396# endif
291#endif 397#endif
292 398
293#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h> 400# include <winsock.h>
295#endif 401#endif
296 402
297#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h> 405# include <stdint.h>
406# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK
408# endif
409# ifndef EFD_CLOEXEC
410# ifdef O_CLOEXEC
411# define EFD_CLOEXEC O_CLOEXEC
412# else
413# define EFD_CLOEXEC 02000000
414# endif
415# endif
300# ifdef __cplusplus 416# ifdef __cplusplus
301extern "C" { 417extern "C" {
302# endif 418# endif
303int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
304# ifdef __cplusplus 420# ifdef __cplusplus
305} 421}
306# endif 422# endif
307#endif 423#endif
308 424
425#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h>
428# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK
430# endif
431# ifndef SFD_CLOEXEC
432# ifdef O_CLOEXEC
433# define SFD_CLOEXEC O_CLOEXEC
434# else
435# define SFD_CLOEXEC 02000000
436# endif
437# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags);
442
443struct signalfd_siginfo
444{
445 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)];
447};
448# ifdef __cplusplus
449}
450# endif
451#endif
452
309/**/ 453/**/
310 454
311#if EV_VERIFY >= 3 455#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 456# define EV_FREQUENT_CHECK ev_verify (EV_A)
313#else 457#else
314# define EV_FREQUENT_CHECK do { } while (0) 458# define EV_FREQUENT_CHECK do { } while (0)
315#endif 459#endif
316 460
317/* 461/*
… …
324 */ 468 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
326 470
327#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
328#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 473
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
330 476
331#if __GNUC__ >= 4 477#if __GNUC__ >= 4
332# define expect(expr,value) __builtin_expect ((expr),(value)) 478# define expect(expr,value) __builtin_expect ((expr),(value))
333# define noinline __attribute__ ((noinline)) 479# define noinline __attribute__ ((noinline))
334#else 480#else
… …
341 487
342#define expect_false(expr) expect ((expr) != 0, 0) 488#define expect_false(expr) expect ((expr) != 0, 0)
343#define expect_true(expr) expect ((expr) != 0, 1) 489#define expect_true(expr) expect ((expr) != 0, 1)
344#define inline_size static inline 490#define inline_size static inline
345 491
346#if EV_MINIMAL 492#if EV_FEATURE_CODE
493# define inline_speed static inline
494#else
347# define inline_speed static noinline 495# define inline_speed static noinline
496#endif
497
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499
500#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0)
348#else 502#else
349# define inline_speed static inline
350#endif
351
352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif
354 505
355#define EMPTY /* required for microsofts broken pseudo-c compiler */ 506#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */ 507#define EMPTY2(a,b) /* used to suppress some warnings */
357 508
358typedef ev_watcher *W; 509typedef ev_watcher *W;
… …
360typedef ev_watcher_time *WT; 511typedef ev_watcher_time *WT;
361 512
362#define ev_active(w) ((W)(w))->active 513#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at 514#define ev_at(w) ((WT)(w))->at
364 515
516#if EV_USE_REALTIME
517/* sig_atomic_t is used to avoid per-thread variables or locking but still */
518/* giving it a reasonably high chance of working on typical architectures */
519static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
520#endif
521
365#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 523static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
524#endif
525
526#ifndef EV_FD_TO_WIN32_HANDLE
527# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
528#endif
529#ifndef EV_WIN32_HANDLE_TO_FD
530# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
531#endif
532#ifndef EV_WIN32_CLOSE_FD
533# define EV_WIN32_CLOSE_FD(fd) close (fd)
369#endif 534#endif
370 535
371#ifdef _WIN32 536#ifdef _WIN32
372# include "ev_win32.c" 537# include "ev_win32.c"
373#endif 538#endif
374 539
375/*****************************************************************************/ 540/*****************************************************************************/
376 541
542#if EV_AVOID_STDIO
543static void noinline
544ev_printerr (const char *msg)
545{
546 write (STDERR_FILENO, msg, strlen (msg));
547}
548#endif
549
377static void (*syserr_cb)(const char *msg); 550static void (*syserr_cb)(const char *msg);
378 551
379void 552void
380ev_set_syserr_cb (void (*cb)(const char *msg)) 553ev_set_syserr_cb (void (*cb)(const char *msg))
381{ 554{
382 syserr_cb = cb; 555 syserr_cb = cb;
383} 556}
384 557
385static void noinline 558static void noinline
386syserr (const char *msg) 559ev_syserr (const char *msg)
387{ 560{
388 if (!msg) 561 if (!msg)
389 msg = "(libev) system error"; 562 msg = "(libev) system error";
390 563
391 if (syserr_cb) 564 if (syserr_cb)
392 syserr_cb (msg); 565 syserr_cb (msg);
393 else 566 else
394 { 567 {
568#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg);
572 ev_printerr (": ");
573 ev_printerr (err);
574 ev_printerr ("\n");
575#else
395 perror (msg); 576 perror (msg);
577#endif
396 abort (); 578 abort ();
397 } 579 }
398} 580}
399 581
400static void * 582static void *
401ev_realloc_emul (void *ptr, long size) 583ev_realloc_emul (void *ptr, long size)
402{ 584{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
403 /* some systems, notably openbsd and darwin, fail to properly 588 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and 589 * implement realloc (x, 0) (as required by both ansi c-89 and
405 * the single unix specification, so work around them here. 590 * the single unix specification, so work around them here.
406 */ 591 */
407 592
408 if (size) 593 if (size)
409 return realloc (ptr, size); 594 return realloc (ptr, size);
410 595
411 free (ptr); 596 free (ptr);
412 return 0; 597 return 0;
598#endif
413} 599}
414 600
415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
416 602
417void 603void
… …
425{ 611{
426 ptr = alloc (ptr, size); 612 ptr = alloc (ptr, size);
427 613
428 if (!ptr && size) 614 if (!ptr && size)
429 { 615 {
616#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n");
618#else
430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
620#endif
431 abort (); 621 abort ();
432 } 622 }
433 623
434 return ptr; 624 return ptr;
435} 625}
… …
437#define ev_malloc(size) ev_realloc (0, (size)) 627#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0) 628#define ev_free(ptr) ev_realloc ((ptr), 0)
439 629
440/*****************************************************************************/ 630/*****************************************************************************/
441 631
632/* set in reify when reification needed */
633#define EV_ANFD_REIFY 1
634
635/* file descriptor info structure */
442typedef struct 636typedef struct
443{ 637{
444 WL head; 638 WL head;
445 unsigned char events; 639 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446 unsigned char reify; 642 unsigned char unused;
643#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif
447#if EV_SELECT_IS_WINSOCKET 646#if EV_SELECT_IS_WINSOCKET
448 SOCKET handle; 647 SOCKET handle;
449#endif 648#endif
450} ANFD; 649} ANFD;
451 650
651/* stores the pending event set for a given watcher */
452typedef struct 652typedef struct
453{ 653{
454 W w; 654 W w;
455 int events; 655 int events; /* the pending event set for the given watcher */
456} ANPENDING; 656} ANPENDING;
457 657
458#if EV_USE_INOTIFY 658#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */ 659/* hash table entry per inotify-id */
460typedef struct 660typedef struct
… …
463} ANFS; 663} ANFS;
464#endif 664#endif
465 665
466/* Heap Entry */ 666/* Heap Entry */
467#if EV_HEAP_CACHE_AT 667#if EV_HEAP_CACHE_AT
668 /* a heap element */
468 typedef struct { 669 typedef struct {
469 ev_tstamp at; 670 ev_tstamp at;
470 WT w; 671 WT w;
471 } ANHE; 672 } ANHE;
472 673
473 #define ANHE_w(he) (he).w /* access watcher, read-write */ 674 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */ 675 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 676 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else 677#else
678 /* a heap element */
477 typedef WT ANHE; 679 typedef WT ANHE;
478 680
479 #define ANHE_w(he) (he) 681 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at 682 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he) 683 #define ANHE_at_cache(he)
… …
505 707
506 static int ev_default_loop_ptr; 708 static int ev_default_loop_ptr;
507 709
508#endif 710#endif
509 711
712#if EV_FEATURE_API
713# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
714# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
715# define EV_INVOKE_PENDING invoke_cb (EV_A)
716#else
717# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif
721
722#define EVUNLOOP_RECURSE 0x80
723
510/*****************************************************************************/ 724/*****************************************************************************/
511 725
726#ifndef EV_HAVE_EV_TIME
512ev_tstamp 727ev_tstamp
513ev_time (void) 728ev_time (void)
514{ 729{
515#if EV_USE_REALTIME 730#if EV_USE_REALTIME
731 if (expect_true (have_realtime))
732 {
516 struct timespec ts; 733 struct timespec ts;
517 clock_gettime (CLOCK_REALTIME, &ts); 734 clock_gettime (CLOCK_REALTIME, &ts);
518 return ts.tv_sec + ts.tv_nsec * 1e-9; 735 return ts.tv_sec + ts.tv_nsec * 1e-9;
519#else 736 }
737#endif
738
520 struct timeval tv; 739 struct timeval tv;
521 gettimeofday (&tv, 0); 740 gettimeofday (&tv, 0);
522 return tv.tv_sec + tv.tv_usec * 1e-6; 741 return tv.tv_sec + tv.tv_usec * 1e-6;
523#endif
524} 742}
743#endif
525 744
526ev_tstamp inline_size 745inline_size ev_tstamp
527get_clock (void) 746get_clock (void)
528{ 747{
529#if EV_USE_MONOTONIC 748#if EV_USE_MONOTONIC
530 if (expect_true (have_monotonic)) 749 if (expect_true (have_monotonic))
531 { 750 {
… …
552 if (delay > 0.) 771 if (delay > 0.)
553 { 772 {
554#if EV_USE_NANOSLEEP 773#if EV_USE_NANOSLEEP
555 struct timespec ts; 774 struct timespec ts;
556 775
557 ts.tv_sec = (time_t)delay; 776 EV_TS_SET (ts, delay);
558 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
559
560 nanosleep (&ts, 0); 777 nanosleep (&ts, 0);
561#elif defined(_WIN32) 778#elif defined(_WIN32)
562 Sleep ((unsigned long)(delay * 1e3)); 779 Sleep ((unsigned long)(delay * 1e3));
563#else 780#else
564 struct timeval tv; 781 struct timeval tv;
565 782
566 tv.tv_sec = (time_t)delay; 783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 784 /* something not guaranteed by newer posix versions, but guaranteed */
568 785 /* by older ones */
786 EV_TV_SET (tv, delay);
569 select (0, 0, 0, 0, &tv); 787 select (0, 0, 0, 0, &tv);
570#endif 788#endif
571 } 789 }
572} 790}
573 791
574/*****************************************************************************/ 792/*****************************************************************************/
575 793
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 794#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577 795
578int inline_size 796/* find a suitable new size for the given array, */
797/* hopefully by rounding to a nice-to-malloc size */
798inline_size int
579array_nextsize (int elem, int cur, int cnt) 799array_nextsize (int elem, int cur, int cnt)
580{ 800{
581 int ncur = cur + 1; 801 int ncur = cur + 1;
582 802
583 do 803 do
… …
600array_realloc (int elem, void *base, int *cur, int cnt) 820array_realloc (int elem, void *base, int *cur, int cnt)
601{ 821{
602 *cur = array_nextsize (elem, *cur, cnt); 822 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur); 823 return ev_realloc (base, elem * *cur);
604} 824}
825
826#define array_init_zero(base,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count))
605 828
606#define array_needsize(type,base,cur,cnt,init) \ 829#define array_needsize(type,base,cur,cnt,init) \
607 if (expect_false ((cnt) > (cur))) \ 830 if (expect_false ((cnt) > (cur))) \
608 { \ 831 { \
609 int ocur_ = (cur); \ 832 int ocur_ = (cur); \
… …
621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 844 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622 } 845 }
623#endif 846#endif
624 847
625#define array_free(stem, idx) \ 848#define array_free(stem, idx) \
626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 849 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627 850
628/*****************************************************************************/ 851/*****************************************************************************/
852
853/* dummy callback for pending events */
854static void noinline
855pendingcb (EV_P_ ev_prepare *w, int revents)
856{
857}
629 858
630void noinline 859void noinline
631ev_feed_event (EV_P_ void *w, int revents) 860ev_feed_event (EV_P_ void *w, int revents)
632{ 861{
633 W w_ = (W)w; 862 W w_ = (W)w;
… …
642 pendings [pri][w_->pending - 1].w = w_; 871 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents; 872 pendings [pri][w_->pending - 1].events = revents;
644 } 873 }
645} 874}
646 875
647void inline_speed 876inline_speed void
877feed_reverse (EV_P_ W w)
878{
879 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
880 rfeeds [rfeedcnt++] = w;
881}
882
883inline_size void
884feed_reverse_done (EV_P_ int revents)
885{
886 do
887 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
888 while (rfeedcnt);
889}
890
891inline_speed void
648queue_events (EV_P_ W *events, int eventcnt, int type) 892queue_events (EV_P_ W *events, int eventcnt, int type)
649{ 893{
650 int i; 894 int i;
651 895
652 for (i = 0; i < eventcnt; ++i) 896 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type); 897 ev_feed_event (EV_A_ events [i], type);
654} 898}
655 899
656/*****************************************************************************/ 900/*****************************************************************************/
657 901
658void inline_size 902inline_speed void
659anfds_init (ANFD *base, int count)
660{
661 while (count--)
662 {
663 base->head = 0;
664 base->events = EV_NONE;
665 base->reify = 0;
666
667 ++base;
668 }
669}
670
671void inline_speed
672fd_event (EV_P_ int fd, int revents) 903fd_event_nocheck (EV_P_ int fd, int revents)
673{ 904{
674 ANFD *anfd = anfds + fd; 905 ANFD *anfd = anfds + fd;
675 ev_io *w; 906 ev_io *w;
676 907
677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
681 if (ev) 912 if (ev)
682 ev_feed_event (EV_A_ (W)w, ev); 913 ev_feed_event (EV_A_ (W)w, ev);
683 } 914 }
684} 915}
685 916
917/* do not submit kernel events for fds that have reify set */
918/* because that means they changed while we were polling for new events */
919inline_speed void
920fd_event (EV_P_ int fd, int revents)
921{
922 ANFD *anfd = anfds + fd;
923
924 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents);
926}
927
686void 928void
687ev_feed_fd_event (EV_P_ int fd, int revents) 929ev_feed_fd_event (EV_P_ int fd, int revents)
688{ 930{
689 if (fd >= 0 && fd < anfdmax) 931 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents); 932 fd_event_nocheck (EV_A_ fd, revents);
691} 933}
692 934
693void inline_size 935/* make sure the external fd watch events are in-sync */
936/* with the kernel/libev internal state */
937inline_size void
694fd_reify (EV_P) 938fd_reify (EV_P)
695{ 939{
696 int i; 940 int i;
697 941
698 for (i = 0; i < fdchangecnt; ++i) 942 for (i = 0; i < fdchangecnt; ++i)
… …
707 events |= (unsigned char)w->events; 951 events |= (unsigned char)w->events;
708 952
709#if EV_SELECT_IS_WINSOCKET 953#if EV_SELECT_IS_WINSOCKET
710 if (events) 954 if (events)
711 { 955 {
712 unsigned long argp; 956 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
716 anfd->handle = _get_osfhandle (fd);
717 #endif
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719 } 959 }
720#endif 960#endif
721 961
722 { 962 {
723 unsigned char o_events = anfd->events; 963 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify; 964 unsigned char o_reify = anfd->reify;
725 965
726 anfd->reify = 0; 966 anfd->reify = 0;
727 anfd->events = events; 967 anfd->events = events;
728 968
729 if (o_events != events || o_reify & EV_IOFDSET) 969 if (o_events != events || o_reify & EV__IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events); 970 backend_modify (EV_A_ fd, o_events, events);
731 } 971 }
732 } 972 }
733 973
734 fdchangecnt = 0; 974 fdchangecnt = 0;
735} 975}
736 976
737void inline_size 977/* something about the given fd changed */
978inline_size void
738fd_change (EV_P_ int fd, int flags) 979fd_change (EV_P_ int fd, int flags)
739{ 980{
740 unsigned char reify = anfds [fd].reify; 981 unsigned char reify = anfds [fd].reify;
741 anfds [fd].reify |= flags; 982 anfds [fd].reify |= flags;
742 983
… …
746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 987 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747 fdchanges [fdchangecnt - 1] = fd; 988 fdchanges [fdchangecnt - 1] = fd;
748 } 989 }
749} 990}
750 991
751void inline_speed 992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void
752fd_kill (EV_P_ int fd) 994fd_kill (EV_P_ int fd)
753{ 995{
754 ev_io *w; 996 ev_io *w;
755 997
756 while ((w = (ev_io *)anfds [fd].head)) 998 while ((w = (ev_io *)anfds [fd].head))
… …
758 ev_io_stop (EV_A_ w); 1000 ev_io_stop (EV_A_ w);
759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760 } 1002 }
761} 1003}
762 1004
763int inline_size 1005/* check whether the given fd is actually valid, for error recovery */
1006inline_size int
764fd_valid (int fd) 1007fd_valid (int fd)
765{ 1008{
766#ifdef _WIN32 1009#ifdef _WIN32
767 return _get_osfhandle (fd) != -1; 1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
768#else 1011#else
769 return fcntl (fd, F_GETFD) != -1; 1012 return fcntl (fd, F_GETFD) != -1;
770#endif 1013#endif
771} 1014}
772 1015
… …
776{ 1019{
777 int fd; 1020 int fd;
778 1021
779 for (fd = 0; fd < anfdmax; ++fd) 1022 for (fd = 0; fd < anfdmax; ++fd)
780 if (anfds [fd].events) 1023 if (anfds [fd].events)
781 if (!fd_valid (fd) == -1 && errno == EBADF) 1024 if (!fd_valid (fd) && errno == EBADF)
782 fd_kill (EV_A_ fd); 1025 fd_kill (EV_A_ fd);
783} 1026}
784 1027
785/* called on ENOMEM in select/poll to kill some fds and retry */ 1028/* called on ENOMEM in select/poll to kill some fds and retry */
786static void noinline 1029static void noinline
… …
790 1033
791 for (fd = anfdmax; fd--; ) 1034 for (fd = anfdmax; fd--; )
792 if (anfds [fd].events) 1035 if (anfds [fd].events)
793 { 1036 {
794 fd_kill (EV_A_ fd); 1037 fd_kill (EV_A_ fd);
795 return; 1038 break;
796 } 1039 }
797} 1040}
798 1041
799/* usually called after fork if backend needs to re-arm all fds from scratch */ 1042/* usually called after fork if backend needs to re-arm all fds from scratch */
800static void noinline 1043static void noinline
… …
804 1047
805 for (fd = 0; fd < anfdmax; ++fd) 1048 for (fd = 0; fd < anfdmax; ++fd)
806 if (anfds [fd].events) 1049 if (anfds [fd].events)
807 { 1050 {
808 anfds [fd].events = 0; 1051 anfds [fd].events = 0;
1052 anfds [fd].emask = 0;
809 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1053 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810 } 1054 }
811} 1055}
812 1056
1057/* used to prepare libev internal fd's */
1058/* this is not fork-safe */
1059inline_speed void
1060fd_intern (int fd)
1061{
1062#ifdef _WIN32
1063 unsigned long arg = 1;
1064 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1065#else
1066 fcntl (fd, F_SETFD, FD_CLOEXEC);
1067 fcntl (fd, F_SETFL, O_NONBLOCK);
1068#endif
1069}
1070
813/*****************************************************************************/ 1071/*****************************************************************************/
814 1072
815/* 1073/*
816 * the heap functions want a real array index. array index 0 uis guaranteed to not 1074 * the heap functions want a real array index. array index 0 is guaranteed to not
817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1075 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
818 * the branching factor of the d-tree. 1076 * the branching factor of the d-tree.
819 */ 1077 */
820 1078
821/* 1079/*
… …
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1088#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1089#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k)) 1090#define UPHEAP_DONE(p,k) ((p) == (k))
833 1091
834/* away from the root */ 1092/* away from the root */
835void inline_speed 1093inline_speed void
836downheap (ANHE *heap, int N, int k) 1094downheap (ANHE *heap, int N, int k)
837{ 1095{
838 ANHE he = heap [k]; 1096 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0; 1097 ANHE *E = heap + N + HEAP0;
840 1098
… …
880#define HEAP0 1 1138#define HEAP0 1
881#define HPARENT(k) ((k) >> 1) 1139#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p)) 1140#define UPHEAP_DONE(p,k) (!(p))
883 1141
884/* away from the root */ 1142/* away from the root */
885void inline_speed 1143inline_speed void
886downheap (ANHE *heap, int N, int k) 1144downheap (ANHE *heap, int N, int k)
887{ 1145{
888 ANHE he = heap [k]; 1146 ANHE he = heap [k];
889 1147
890 for (;;) 1148 for (;;)
891 { 1149 {
892 int c = k << 1; 1150 int c = k << 1;
893 1151
894 if (c > N + HEAP0 - 1) 1152 if (c >= N + HEAP0)
895 break; 1153 break;
896 1154
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1155 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0; 1156 ? 1 : 0;
899 1157
… …
910 ev_active (ANHE_w (he)) = k; 1168 ev_active (ANHE_w (he)) = k;
911} 1169}
912#endif 1170#endif
913 1171
914/* towards the root */ 1172/* towards the root */
915void inline_speed 1173inline_speed void
916upheap (ANHE *heap, int k) 1174upheap (ANHE *heap, int k)
917{ 1175{
918 ANHE he = heap [k]; 1176 ANHE he = heap [k];
919 1177
920 for (;;) 1178 for (;;)
… …
931 1189
932 heap [k] = he; 1190 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 1191 ev_active (ANHE_w (he)) = k;
934} 1192}
935 1193
936void inline_size 1194/* move an element suitably so it is in a correct place */
1195inline_size void
937adjustheap (ANHE *heap, int N, int k) 1196adjustheap (ANHE *heap, int N, int k)
938{ 1197{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1198 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
940 upheap (heap, k); 1199 upheap (heap, k);
941 else 1200 else
942 downheap (heap, N, k); 1201 downheap (heap, N, k);
943} 1202}
944 1203
945/* rebuild the heap: this function is used only once and executed rarely */ 1204/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size 1205inline_size void
947reheap (ANHE *heap, int N) 1206reheap (ANHE *heap, int N)
948{ 1207{
949 int i; 1208 int i;
950 1209
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1210 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
954 upheap (heap, i + HEAP0); 1213 upheap (heap, i + HEAP0);
955} 1214}
956 1215
957/*****************************************************************************/ 1216/*****************************************************************************/
958 1217
1218/* associate signal watchers to a signal signal */
959typedef struct 1219typedef struct
960{ 1220{
1221 EV_ATOMIC_T pending;
1222#if EV_MULTIPLICITY
1223 EV_P;
1224#endif
961 WL head; 1225 WL head;
962 EV_ATOMIC_T gotsig;
963} ANSIG; 1226} ANSIG;
964 1227
965static ANSIG *signals; 1228static ANSIG signals [EV_NSIG - 1];
966static int signalmax;
967
968static EV_ATOMIC_T gotsig;
969
970void inline_size
971signals_init (ANSIG *base, int count)
972{
973 while (count--)
974 {
975 base->head = 0;
976 base->gotsig = 0;
977
978 ++base;
979 }
980}
981 1229
982/*****************************************************************************/ 1230/*****************************************************************************/
983 1231
984void inline_speed 1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
985fd_intern (int fd)
986{
987#ifdef _WIN32
988 int arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif
994}
995 1233
996static void noinline 1234static void noinline
997evpipe_init (EV_P) 1235evpipe_init (EV_P)
998{ 1236{
999 if (!ev_is_active (&pipeev)) 1237 if (!ev_is_active (&pipe_w))
1000 { 1238 {
1001#if EV_USE_EVENTFD 1239# if EV_USE_EVENTFD
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL)
1002 if ((evfd = eventfd (0, 0)) >= 0) 1242 evfd = eventfd (0, 0);
1243
1244 if (evfd >= 0)
1003 { 1245 {
1004 evpipe [0] = -1; 1246 evpipe [0] = -1;
1005 fd_intern (evfd); 1247 fd_intern (evfd); /* doing it twice doesn't hurt */
1006 ev_io_set (&pipeev, evfd, EV_READ); 1248 ev_io_set (&pipe_w, evfd, EV_READ);
1007 } 1249 }
1008 else 1250 else
1009#endif 1251# endif
1010 { 1252 {
1011 while (pipe (evpipe)) 1253 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe"); 1254 ev_syserr ("(libev) error creating signal/async pipe");
1013 1255
1014 fd_intern (evpipe [0]); 1256 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]); 1257 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ); 1258 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017 } 1259 }
1018 1260
1019 ev_io_start (EV_A_ &pipeev); 1261 ev_io_start (EV_A_ &pipe_w);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */ 1262 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 } 1263 }
1022} 1264}
1023 1265
1024void inline_size 1266inline_size void
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1267evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{ 1268{
1027 if (!*flag) 1269 if (!*flag)
1028 { 1270 {
1029 int old_errno = errno; /* save errno because write might clobber it */ 1271 int old_errno = errno; /* save errno because write might clobber it */
1272 char dummy;
1030 1273
1031 *flag = 1; 1274 *flag = 1;
1032 1275
1033#if EV_USE_EVENTFD 1276#if EV_USE_EVENTFD
1034 if (evfd >= 0) 1277 if (evfd >= 0)
… …
1036 uint64_t counter = 1; 1279 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t)); 1280 write (evfd, &counter, sizeof (uint64_t));
1038 } 1281 }
1039 else 1282 else
1040#endif 1283#endif
1284 /* win32 people keep sending patches that change this write() to send() */
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286 /* so when you think this write should be a send instead, please find out */
1287 /* where your send() is from - it's definitely not the microsoft send, and */
1288 /* tell me. thank you. */
1041 write (evpipe [1], &old_errno, 1); 1289 write (evpipe [1], &dummy, 1);
1042 1290
1043 errno = old_errno; 1291 errno = old_errno;
1044 } 1292 }
1045} 1293}
1046 1294
1295/* called whenever the libev signal pipe */
1296/* got some events (signal, async) */
1047static void 1297static void
1048pipecb (EV_P_ ev_io *iow, int revents) 1298pipecb (EV_P_ ev_io *iow, int revents)
1049{ 1299{
1300 int i;
1301
1050#if EV_USE_EVENTFD 1302#if EV_USE_EVENTFD
1051 if (evfd >= 0) 1303 if (evfd >= 0)
1052 { 1304 {
1053 uint64_t counter; 1305 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t)); 1306 read (evfd, &counter, sizeof (uint64_t));
1055 } 1307 }
1056 else 1308 else
1057#endif 1309#endif
1058 { 1310 {
1059 char dummy; 1311 char dummy;
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1060 read (evpipe [0], &dummy, 1); 1313 read (evpipe [0], &dummy, 1);
1061 } 1314 }
1062 1315
1063 if (gotsig && ev_is_default_loop (EV_A)) 1316 if (sig_pending)
1064 { 1317 {
1065 int signum; 1318 sig_pending = 0;
1066 gotsig = 0;
1067 1319
1068 for (signum = signalmax; signum--; ) 1320 for (i = EV_NSIG - 1; i--; )
1069 if (signals [signum].gotsig) 1321 if (expect_false (signals [i].pending))
1070 ev_feed_signal_event (EV_A_ signum + 1); 1322 ev_feed_signal_event (EV_A_ i + 1);
1071 } 1323 }
1072 1324
1073#if EV_ASYNC_ENABLE 1325#if EV_ASYNC_ENABLE
1074 if (gotasync) 1326 if (async_pending)
1075 { 1327 {
1076 int i; 1328 async_pending = 0;
1077 gotasync = 0;
1078 1329
1079 for (i = asynccnt; i--; ) 1330 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent) 1331 if (asyncs [i]->sent)
1081 { 1332 {
1082 asyncs [i]->sent = 0; 1333 asyncs [i]->sent = 0;
… …
1090 1341
1091static void 1342static void
1092ev_sighandler (int signum) 1343ev_sighandler (int signum)
1093{ 1344{
1094#if EV_MULTIPLICITY 1345#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct; 1346 EV_P = signals [signum - 1].loop;
1096#endif 1347#endif
1097 1348
1098#if _WIN32 1349#ifdef _WIN32
1099 signal (signum, ev_sighandler); 1350 signal (signum, ev_sighandler);
1100#endif 1351#endif
1101 1352
1102 signals [signum - 1].gotsig = 1; 1353 signals [signum - 1].pending = 1;
1103 evpipe_write (EV_A_ &gotsig); 1354 evpipe_write (EV_A_ &sig_pending);
1104} 1355}
1105 1356
1106void noinline 1357void noinline
1107ev_feed_signal_event (EV_P_ int signum) 1358ev_feed_signal_event (EV_P_ int signum)
1108{ 1359{
1109 WL w; 1360 WL w;
1110 1361
1362 if (expect_false (signum <= 0 || signum > EV_NSIG))
1363 return;
1364
1365 --signum;
1366
1111#if EV_MULTIPLICITY 1367#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1368 /* it is permissible to try to feed a signal to the wrong loop */
1113#endif 1369 /* or, likely more useful, feeding a signal nobody is waiting for */
1114 1370
1115 --signum; 1371 if (expect_false (signals [signum].loop != EV_A))
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return; 1372 return;
1373#endif
1119 1374
1120 signals [signum].gotsig = 0; 1375 signals [signum].pending = 0;
1121 1376
1122 for (w = signals [signum].head; w; w = w->next) 1377 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124} 1379}
1125 1380
1381#if EV_USE_SIGNALFD
1382static void
1383sigfdcb (EV_P_ ev_io *iow, int revents)
1384{
1385 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1386
1387 for (;;)
1388 {
1389 ssize_t res = read (sigfd, si, sizeof (si));
1390
1391 /* not ISO-C, as res might be -1, but works with SuS */
1392 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1393 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1394
1395 if (res < (ssize_t)sizeof (si))
1396 break;
1397 }
1398}
1399#endif
1400
1401#endif
1402
1126/*****************************************************************************/ 1403/*****************************************************************************/
1127 1404
1405#if EV_CHILD_ENABLE
1128static WL childs [EV_PID_HASHSIZE]; 1406static WL childs [EV_PID_HASHSIZE];
1129
1130#ifndef _WIN32
1131 1407
1132static ev_signal childev; 1408static ev_signal childev;
1133 1409
1134#ifndef WIFCONTINUED 1410#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0 1411# define WIFCONTINUED(status) 0
1136#endif 1412#endif
1137 1413
1138void inline_speed 1414/* handle a single child status event */
1415inline_speed void
1139child_reap (EV_P_ int chain, int pid, int status) 1416child_reap (EV_P_ int chain, int pid, int status)
1140{ 1417{
1141 ev_child *w; 1418 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1419 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143 1420
1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1421 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 { 1422 {
1146 if ((w->pid == pid || !w->pid) 1423 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1))) 1424 && (!traced || (w->flags & 1)))
1148 { 1425 {
1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1426 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1156 1433
1157#ifndef WCONTINUED 1434#ifndef WCONTINUED
1158# define WCONTINUED 0 1435# define WCONTINUED 0
1159#endif 1436#endif
1160 1437
1438/* called on sigchld etc., calls waitpid */
1161static void 1439static void
1162childcb (EV_P_ ev_signal *sw, int revents) 1440childcb (EV_P_ ev_signal *sw, int revents)
1163{ 1441{
1164 int pid, status; 1442 int pid, status;
1165 1443
… …
1173 /* make sure we are called again until all children have been reaped */ 1451 /* make sure we are called again until all children have been reaped */
1174 /* we need to do it this way so that the callback gets called before we continue */ 1452 /* we need to do it this way so that the callback gets called before we continue */
1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1453 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1176 1454
1177 child_reap (EV_A_ pid, pid, status); 1455 child_reap (EV_A_ pid, pid, status);
1178 if (EV_PID_HASHSIZE > 1) 1456 if ((EV_PID_HASHSIZE) > 1)
1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1457 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1180} 1458}
1181 1459
1182#endif 1460#endif
1183 1461
… …
1246 /* kqueue is borked on everything but netbsd apparently */ 1524 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */ 1525 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE; 1526 flags &= ~EVBACKEND_KQUEUE;
1249#endif 1527#endif
1250#ifdef __APPLE__ 1528#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation 1529 /* only select works correctly on that "unix-certified" platform */
1252 flags &= ~EVBACKEND_POLL; 1530 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1531 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1532#endif
1533#ifdef __FreeBSD__
1534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1253#endif 1535#endif
1254 1536
1255 return flags; 1537 return flags;
1256} 1538}
1257 1539
… …
1271ev_backend (EV_P) 1553ev_backend (EV_P)
1272{ 1554{
1273 return backend; 1555 return backend;
1274} 1556}
1275 1557
1558#if EV_FEATURE_API
1276unsigned int 1559unsigned int
1277ev_loop_count (EV_P) 1560ev_iteration (EV_P)
1278{ 1561{
1279 return loop_count; 1562 return loop_count;
1280} 1563}
1281 1564
1565unsigned int
1566ev_depth (EV_P)
1567{
1568 return loop_depth;
1569}
1570
1282void 1571void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1573{
1285 io_blocktime = interval; 1574 io_blocktime = interval;
1286} 1575}
… …
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1579{
1291 timeout_blocktime = interval; 1580 timeout_blocktime = interval;
1292} 1581}
1293 1582
1583void
1584ev_set_userdata (EV_P_ void *data)
1585{
1586 userdata = data;
1587}
1588
1589void *
1590ev_userdata (EV_P)
1591{
1592 return userdata;
1593}
1594
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1596{
1597 invoke_cb = invoke_pending_cb;
1598}
1599
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1601{
1602 release_cb = release;
1603 acquire_cb = acquire;
1604}
1605#endif
1606
1607/* initialise a loop structure, must be zero-initialised */
1294static void noinline 1608static void noinline
1295loop_init (EV_P_ unsigned int flags) 1609loop_init (EV_P_ unsigned int flags)
1296{ 1610{
1297 if (!backend) 1611 if (!backend)
1298 { 1612 {
1613#if EV_USE_REALTIME
1614 if (!have_realtime)
1615 {
1616 struct timespec ts;
1617
1618 if (!clock_gettime (CLOCK_REALTIME, &ts))
1619 have_realtime = 1;
1620 }
1621#endif
1622
1299#if EV_USE_MONOTONIC 1623#if EV_USE_MONOTONIC
1624 if (!have_monotonic)
1300 { 1625 {
1301 struct timespec ts; 1626 struct timespec ts;
1627
1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1628 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303 have_monotonic = 1; 1629 have_monotonic = 1;
1304 } 1630 }
1305#endif 1631#endif
1632
1633 /* pid check not overridable via env */
1634#ifndef _WIN32
1635 if (flags & EVFLAG_FORKCHECK)
1636 curpid = getpid ();
1637#endif
1638
1639 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS"));
1306 1643
1307 ev_rt_now = ev_time (); 1644 ev_rt_now = ev_time ();
1308 mn_now = get_clock (); 1645 mn_now = get_clock ();
1309 now_floor = mn_now; 1646 now_floor = mn_now;
1310 rtmn_diff = ev_rt_now - mn_now; 1647 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending;
1650#endif
1311 1651
1312 io_blocktime = 0.; 1652 io_blocktime = 0.;
1313 timeout_blocktime = 0.; 1653 timeout_blocktime = 0.;
1314 backend = 0; 1654 backend = 0;
1315 backend_fd = -1; 1655 backend_fd = -1;
1316 gotasync = 0; 1656 sig_pending = 0;
1657#if EV_ASYNC_ENABLE
1658 async_pending = 0;
1659#endif
1317#if EV_USE_INOTIFY 1660#if EV_USE_INOTIFY
1318 fs_fd = -2; 1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1319#endif 1662#endif
1320 1663#if EV_USE_SIGNALFD
1321 /* pid check not overridable via env */ 1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1322#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK)
1324 curpid = getpid ();
1325#endif 1665#endif
1326
1327 if (!(flags & EVFLAG_NOENV)
1328 && !enable_secure ()
1329 && getenv ("LIBEV_FLAGS"))
1330 flags = atoi (getenv ("LIBEV_FLAGS"));
1331 1666
1332 if (!(flags & 0x0000ffffU)) 1667 if (!(flags & 0x0000ffffU))
1333 flags |= ev_recommended_backends (); 1668 flags |= ev_recommended_backends ();
1334 1669
1335#if EV_USE_PORT 1670#if EV_USE_PORT
… …
1346#endif 1681#endif
1347#if EV_USE_SELECT 1682#if EV_USE_SELECT
1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349#endif 1684#endif
1350 1685
1686 ev_prepare_init (&pending_w, pendingcb);
1687
1688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1351 ev_init (&pipeev, pipecb); 1689 ev_init (&pipe_w, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI); 1690 ev_set_priority (&pipe_w, EV_MAXPRI);
1691#endif
1353 } 1692 }
1354} 1693}
1355 1694
1695/* free up a loop structure */
1356static void noinline 1696static void noinline
1357loop_destroy (EV_P) 1697loop_destroy (EV_P)
1358{ 1698{
1359 int i; 1699 int i;
1360 1700
1361 if (ev_is_active (&pipeev)) 1701 if (ev_is_active (&pipe_w))
1362 { 1702 {
1363 ev_ref (EV_A); /* signal watcher */ 1703 /*ev_ref (EV_A);*/
1364 ev_io_stop (EV_A_ &pipeev); 1704 /*ev_io_stop (EV_A_ &pipe_w);*/
1365 1705
1366#if EV_USE_EVENTFD 1706#if EV_USE_EVENTFD
1367 if (evfd >= 0) 1707 if (evfd >= 0)
1368 close (evfd); 1708 close (evfd);
1369#endif 1709#endif
1370 1710
1371 if (evpipe [0] >= 0) 1711 if (evpipe [0] >= 0)
1372 { 1712 {
1373 close (evpipe [0]); 1713 EV_WIN32_CLOSE_FD (evpipe [0]);
1374 close (evpipe [1]); 1714 EV_WIN32_CLOSE_FD (evpipe [1]);
1375 } 1715 }
1376 } 1716 }
1717
1718#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w))
1720 close (sigfd);
1721#endif
1377 1722
1378#if EV_USE_INOTIFY 1723#if EV_USE_INOTIFY
1379 if (fs_fd >= 0) 1724 if (fs_fd >= 0)
1380 close (fs_fd); 1725 close (fs_fd);
1381#endif 1726#endif
… …
1405#if EV_IDLE_ENABLE 1750#if EV_IDLE_ENABLE
1406 array_free (idle, [i]); 1751 array_free (idle, [i]);
1407#endif 1752#endif
1408 } 1753 }
1409 1754
1410 ev_free (anfds); anfdmax = 0; 1755 ev_free (anfds); anfds = 0; anfdmax = 0;
1411 1756
1412 /* have to use the microsoft-never-gets-it-right macro */ 1757 /* have to use the microsoft-never-gets-it-right macro */
1758 array_free (rfeed, EMPTY);
1413 array_free (fdchange, EMPTY); 1759 array_free (fdchange, EMPTY);
1414 array_free (timer, EMPTY); 1760 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE 1761#if EV_PERIODIC_ENABLE
1416 array_free (periodic, EMPTY); 1762 array_free (periodic, EMPTY);
1417#endif 1763#endif
… …
1426 1772
1427 backend = 0; 1773 backend = 0;
1428} 1774}
1429 1775
1430#if EV_USE_INOTIFY 1776#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P); 1777inline_size void infy_fork (EV_P);
1432#endif 1778#endif
1433 1779
1434void inline_size 1780inline_size void
1435loop_fork (EV_P) 1781loop_fork (EV_P)
1436{ 1782{
1437#if EV_USE_PORT 1783#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1784 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif 1785#endif
… …
1445#endif 1791#endif
1446#if EV_USE_INOTIFY 1792#if EV_USE_INOTIFY
1447 infy_fork (EV_A); 1793 infy_fork (EV_A);
1448#endif 1794#endif
1449 1795
1450 if (ev_is_active (&pipeev)) 1796 if (ev_is_active (&pipe_w))
1451 { 1797 {
1452 /* this "locks" the handlers against writing to the pipe */ 1798 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */ 1799 /* while we modify the fd vars */
1454 gotsig = 1; 1800 sig_pending = 1;
1455#if EV_ASYNC_ENABLE 1801#if EV_ASYNC_ENABLE
1456 gotasync = 1; 1802 async_pending = 1;
1457#endif 1803#endif
1458 1804
1459 ev_ref (EV_A); 1805 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev); 1806 ev_io_stop (EV_A_ &pipe_w);
1461 1807
1462#if EV_USE_EVENTFD 1808#if EV_USE_EVENTFD
1463 if (evfd >= 0) 1809 if (evfd >= 0)
1464 close (evfd); 1810 close (evfd);
1465#endif 1811#endif
1466 1812
1467 if (evpipe [0] >= 0) 1813 if (evpipe [0] >= 0)
1468 { 1814 {
1469 close (evpipe [0]); 1815 EV_WIN32_CLOSE_FD (evpipe [0]);
1470 close (evpipe [1]); 1816 EV_WIN32_CLOSE_FD (evpipe [1]);
1471 } 1817 }
1472 1818
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1473 evpipe_init (EV_A); 1820 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */ 1821 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ); 1822 pipecb (EV_A_ &pipe_w, EV_READ);
1823#endif
1476 } 1824 }
1477 1825
1478 postfork = 0; 1826 postfork = 0;
1479} 1827}
1480 1828
1481#if EV_MULTIPLICITY 1829#if EV_MULTIPLICITY
1482 1830
1483struct ev_loop * 1831struct ev_loop *
1484ev_loop_new (unsigned int flags) 1832ev_loop_new (unsigned int flags)
1485{ 1833{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 1835
1488 memset (loop, 0, sizeof (struct ev_loop)); 1836 memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 1837 loop_init (EV_A_ flags);
1491 1838
1492 if (ev_backend (EV_A)) 1839 if (ev_backend (EV_A))
1493 return loop; 1840 return EV_A;
1494 1841
1495 return 0; 1842 return 0;
1496} 1843}
1497 1844
1498void 1845void
… …
1505void 1852void
1506ev_loop_fork (EV_P) 1853ev_loop_fork (EV_P)
1507{ 1854{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1855 postfork = 1; /* must be in line with ev_default_fork */
1509} 1856}
1857#endif /* multiplicity */
1510 1858
1511#if EV_VERIFY 1859#if EV_VERIFY
1512void noinline 1860static void noinline
1513verify_watcher (EV_P_ W w) 1861verify_watcher (EV_P_ W w)
1514{ 1862{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516 1864
1517 if (w->pending) 1865 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519} 1867}
1520 1868
1521static void noinline 1869static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N) 1870verify_heap (EV_P_ ANHE *heap, int N)
1523{ 1871{
1524 int i; 1872 int i;
1525 1873
1526 for (i = HEAP0; i < N + HEAP0; ++i) 1874 for (i = HEAP0; i < N + HEAP0; ++i)
1527 { 1875 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1876 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1877 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1878 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531 1879
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 } 1881 }
1534} 1882}
1535 1883
1536static void noinline 1884static void noinline
1537array_verify (EV_P_ W *ws, int cnt) 1885array_verify (EV_P_ W *ws, int cnt)
1538{ 1886{
1539 while (cnt--) 1887 while (cnt--)
1540 { 1888 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]); 1890 verify_watcher (EV_A_ ws [cnt]);
1543 } 1891 }
1544} 1892}
1545#endif 1893#endif
1546 1894
1895#if EV_FEATURE_API
1547void 1896void
1548ev_loop_verify (EV_P) 1897ev_verify (EV_P)
1549{ 1898{
1550#if EV_VERIFY 1899#if EV_VERIFY
1551 int i; 1900 int i;
1552 WL w; 1901 WL w;
1553 1902
1554 assert (activecnt >= -1); 1903 assert (activecnt >= -1);
1555 1904
1556 assert (fdchangemax >= fdchangecnt); 1905 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i) 1906 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559 1908
1560 assert (anfdmax >= 0); 1909 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i) 1910 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next) 1911 for (w = anfds [i].head; w; w = w->next)
1563 { 1912 {
1564 verify_watcher (EV_A_ (W)w); 1913 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 } 1916 }
1568 1917
1569 assert (timermax >= timercnt); 1918 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt); 1919 verify_heap (EV_A_ timers, timercnt);
1571 1920
… …
1592#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt); 1942 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt); 1943 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif 1944#endif
1596 1945
1946#if EV_PREPARE_ENABLE
1597 assert (preparemax >= preparecnt); 1947 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt); 1948 array_verify (EV_A_ (W *)prepares, preparecnt);
1949#endif
1599 1950
1951#if EV_CHECK_ENABLE
1600 assert (checkmax >= checkcnt); 1952 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt); 1953 array_verify (EV_A_ (W *)checks, checkcnt);
1954#endif
1602 1955
1603# if 0 1956# if 0
1957#if EV_CHILD_ENABLE
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1958 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1959 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1960#endif
1606# endif 1961# endif
1607#endif 1962#endif
1608} 1963}
1609 1964#endif
1610#endif /* multiplicity */
1611 1965
1612#if EV_MULTIPLICITY 1966#if EV_MULTIPLICITY
1613struct ev_loop * 1967struct ev_loop *
1614ev_default_loop_init (unsigned int flags) 1968ev_default_loop_init (unsigned int flags)
1615#else 1969#else
… …
1618#endif 1972#endif
1619{ 1973{
1620 if (!ev_default_loop_ptr) 1974 if (!ev_default_loop_ptr)
1621 { 1975 {
1622#if EV_MULTIPLICITY 1976#if EV_MULTIPLICITY
1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1977 EV_P = ev_default_loop_ptr = &default_loop_struct;
1624#else 1978#else
1625 ev_default_loop_ptr = 1; 1979 ev_default_loop_ptr = 1;
1626#endif 1980#endif
1627 1981
1628 loop_init (EV_A_ flags); 1982 loop_init (EV_A_ flags);
1629 1983
1630 if (ev_backend (EV_A)) 1984 if (ev_backend (EV_A))
1631 { 1985 {
1632#ifndef _WIN32 1986#if EV_CHILD_ENABLE
1633 ev_signal_init (&childev, childcb, SIGCHLD); 1987 ev_signal_init (&childev, childcb, SIGCHLD);
1634 ev_set_priority (&childev, EV_MAXPRI); 1988 ev_set_priority (&childev, EV_MAXPRI);
1635 ev_signal_start (EV_A_ &childev); 1989 ev_signal_start (EV_A_ &childev);
1636 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1990 ev_unref (EV_A); /* child watcher should not keep loop alive */
1637#endif 1991#endif
… …
1645 1999
1646void 2000void
1647ev_default_destroy (void) 2001ev_default_destroy (void)
1648{ 2002{
1649#if EV_MULTIPLICITY 2003#if EV_MULTIPLICITY
1650 struct ev_loop *loop = ev_default_loop_ptr; 2004 EV_P = ev_default_loop_ptr;
1651#endif 2005#endif
1652 2006
1653#ifndef _WIN32 2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
1654 ev_ref (EV_A); /* child watcher */ 2010 ev_ref (EV_A); /* child watcher */
1655 ev_signal_stop (EV_A_ &childev); 2011 ev_signal_stop (EV_A_ &childev);
1656#endif 2012#endif
1657 2013
1658 loop_destroy (EV_A); 2014 loop_destroy (EV_A);
… …
1660 2016
1661void 2017void
1662ev_default_fork (void) 2018ev_default_fork (void)
1663{ 2019{
1664#if EV_MULTIPLICITY 2020#if EV_MULTIPLICITY
1665 struct ev_loop *loop = ev_default_loop_ptr; 2021 EV_P = ev_default_loop_ptr;
1666#endif 2022#endif
1667 2023
1668 if (backend)
1669 postfork = 1; /* must be in line with ev_loop_fork */ 2024 postfork = 1; /* must be in line with ev_loop_fork */
1670} 2025}
1671 2026
1672/*****************************************************************************/ 2027/*****************************************************************************/
1673 2028
1674void 2029void
1675ev_invoke (EV_P_ void *w, int revents) 2030ev_invoke (EV_P_ void *w, int revents)
1676{ 2031{
1677 EV_CB_INVOKE ((W)w, revents); 2032 EV_CB_INVOKE ((W)w, revents);
1678} 2033}
1679 2034
1680void inline_speed 2035unsigned int
1681call_pending (EV_P) 2036ev_pending_count (EV_P)
2037{
2038 int pri;
2039 unsigned int count = 0;
2040
2041 for (pri = NUMPRI; pri--; )
2042 count += pendingcnt [pri];
2043
2044 return count;
2045}
2046
2047void noinline
2048ev_invoke_pending (EV_P)
1682{ 2049{
1683 int pri; 2050 int pri;
1684 2051
1685 for (pri = NUMPRI; pri--; ) 2052 for (pri = NUMPRI; pri--; )
1686 while (pendingcnt [pri]) 2053 while (pendingcnt [pri])
1687 { 2054 {
1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689 2056
1690 if (expect_true (p->w))
1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
1693 2059
1694 p->w->pending = 0; 2060 p->w->pending = 0;
1695 EV_CB_INVOKE (p->w, p->events); 2061 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK; 2062 EV_FREQUENT_CHECK;
1697 }
1698 } 2063 }
1699} 2064}
1700 2065
1701#if EV_IDLE_ENABLE 2066#if EV_IDLE_ENABLE
1702void inline_size 2067/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */
2069inline_size void
1703idle_reify (EV_P) 2070idle_reify (EV_P)
1704{ 2071{
1705 if (expect_false (idleall)) 2072 if (expect_false (idleall))
1706 { 2073 {
1707 int pri; 2074 int pri;
… …
1719 } 2086 }
1720 } 2087 }
1721} 2088}
1722#endif 2089#endif
1723 2090
1724void inline_size 2091/* make timers pending */
2092inline_size void
1725timers_reify (EV_P) 2093timers_reify (EV_P)
1726{ 2094{
1727 EV_FREQUENT_CHECK; 2095 EV_FREQUENT_CHECK;
1728 2096
1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2097 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730 { 2098 {
1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2099 do
1732
1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735 /* first reschedule or stop timer */
1736 if (w->repeat)
1737 { 2100 {
2101 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2102
2103 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2104
2105 /* first reschedule or stop timer */
2106 if (w->repeat)
2107 {
1738 ev_at (w) += w->repeat; 2108 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now) 2109 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now; 2110 ev_at (w) = mn_now;
1741 2111
1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2112 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743 2113
1744 ANHE_at_cache (timers [HEAP0]); 2114 ANHE_at_cache (timers [HEAP0]);
1745 downheap (timers, timercnt, HEAP0); 2115 downheap (timers, timercnt, HEAP0);
2116 }
2117 else
2118 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2119
2120 EV_FREQUENT_CHECK;
2121 feed_reverse (EV_A_ (W)w);
1746 } 2122 }
1747 else 2123 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749 2124
1750 EV_FREQUENT_CHECK; 2125 feed_reverse_done (EV_A_ EV_TIMER);
1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1752 } 2126 }
1753} 2127}
1754 2128
1755#if EV_PERIODIC_ENABLE 2129#if EV_PERIODIC_ENABLE
1756void inline_size 2130/* make periodics pending */
2131inline_size void
1757periodics_reify (EV_P) 2132periodics_reify (EV_P)
1758{ 2133{
1759 EV_FREQUENT_CHECK; 2134 EV_FREQUENT_CHECK;
1760 2135
1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762 { 2137 {
1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2138 int feed_count = 0;
1764 2139
1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2140 do
1766
1767 /* first reschedule or stop timer */
1768 if (w->reschedule_cb)
1769 { 2141 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2145
2146 /* first reschedule or stop timer */
2147 if (w->reschedule_cb)
2148 {
1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2149 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771 2150
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2151 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773 2152
1774 ANHE_at_cache (periodics [HEAP0]); 2153 ANHE_at_cache (periodics [HEAP0]);
1775 downheap (periodics, periodiccnt, HEAP0); 2154 downheap (periodics, periodiccnt, HEAP0);
2155 }
2156 else if (w->interval)
2157 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0);
2174 }
2175 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2177
2178 EV_FREQUENT_CHECK;
2179 feed_reverse (EV_A_ (W)w);
1776 } 2180 }
1777 else if (w->interval) 2181 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785 2182
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
1795 }
1796 else
1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799 EV_FREQUENT_CHECK;
1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2183 feed_reverse_done (EV_A_ EV_PERIODIC);
1801 } 2184 }
1802} 2185}
1803 2186
2187/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */
1804static void noinline 2189static void noinline
1805periodics_reschedule (EV_P) 2190periodics_reschedule (EV_P)
1806{ 2191{
1807 int i; 2192 int i;
1808 2193
… …
1821 2206
1822 reheap (periodics, periodiccnt); 2207 reheap (periodics, periodiccnt);
1823} 2208}
1824#endif 2209#endif
1825 2210
1826void inline_speed 2211/* adjust all timers by a given offset */
2212static void noinline
2213timers_reschedule (EV_P_ ev_tstamp adjust)
2214{
2215 int i;
2216
2217 for (i = 0; i < timercnt; ++i)
2218 {
2219 ANHE *he = timers + i + HEAP0;
2220 ANHE_w (*he)->at += adjust;
2221 ANHE_at_cache (*he);
2222 }
2223}
2224
2225/* fetch new monotonic and realtime times from the kernel */
2226/* also detect if there was a timejump, and act accordingly */
2227inline_speed void
1827time_update (EV_P_ ev_tstamp max_block) 2228time_update (EV_P_ ev_tstamp max_block)
1828{ 2229{
1829 int i;
1830
1831#if EV_USE_MONOTONIC 2230#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic)) 2231 if (expect_true (have_monotonic))
1833 { 2232 {
2233 int i;
1834 ev_tstamp odiff = rtmn_diff; 2234 ev_tstamp odiff = rtmn_diff;
1835 2235
1836 mn_now = get_clock (); 2236 mn_now = get_clock ();
1837 2237
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2238 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 ev_rt_now = ev_time (); 2264 ev_rt_now = ev_time ();
1865 mn_now = get_clock (); 2265 mn_now = get_clock ();
1866 now_floor = mn_now; 2266 now_floor = mn_now;
1867 } 2267 }
1868 2268
2269 /* no timer adjustment, as the monotonic clock doesn't jump */
2270 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869# if EV_PERIODIC_ENABLE 2271# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A); 2272 periodics_reschedule (EV_A);
1871# endif 2273# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 } 2274 }
1875 else 2275 else
1876#endif 2276#endif
1877 { 2277 {
1878 ev_rt_now = ev_time (); 2278 ev_rt_now = ev_time ();
1879 2279
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2280 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 { 2281 {
2282 /* adjust timers. this is easy, as the offset is the same for all of them */
2283 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882#if EV_PERIODIC_ENABLE 2284#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A); 2285 periodics_reschedule (EV_A);
1884#endif 2286#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1892 } 2287 }
1893 2288
1894 mn_now = ev_rt_now; 2289 mn_now = ev_rt_now;
1895 } 2290 }
1896} 2291}
1897 2292
1898void 2293void
1899ev_ref (EV_P)
1900{
1901 ++activecnt;
1902}
1903
1904void
1905ev_unref (EV_P)
1906{
1907 --activecnt;
1908}
1909
1910static int loop_done;
1911
1912void
1913ev_loop (EV_P_ int flags) 2294ev_loop (EV_P_ int flags)
1914{ 2295{
2296#if EV_FEATURE_API
2297 ++loop_depth;
2298#endif
2299
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2301
1915 loop_done = EVUNLOOP_CANCEL; 2302 loop_done = EVUNLOOP_CANCEL;
1916 2303
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918 2305
1919 do 2306 do
1920 { 2307 {
1921#if EV_VERIFY >= 2 2308#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A); 2309 ev_verify (EV_A);
1923#endif 2310#endif
1924 2311
1925#ifndef _WIN32 2312#ifndef _WIN32
1926 if (expect_false (curpid)) /* penalise the forking check even more */ 2313 if (expect_false (curpid)) /* penalise the forking check even more */
1927 if (expect_false (getpid () != curpid)) 2314 if (expect_false (getpid () != curpid))
… …
1935 /* we might have forked, so queue fork handlers */ 2322 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork)) 2323 if (expect_false (postfork))
1937 if (forkcnt) 2324 if (forkcnt)
1938 { 2325 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2326 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A); 2327 EV_INVOKE_PENDING;
1941 } 2328 }
1942#endif 2329#endif
1943 2330
2331#if EV_PREPARE_ENABLE
1944 /* queue prepare watchers (and execute them) */ 2332 /* queue prepare watchers (and execute them) */
1945 if (expect_false (preparecnt)) 2333 if (expect_false (preparecnt))
1946 { 2334 {
1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2335 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948 call_pending (EV_A); 2336 EV_INVOKE_PENDING;
1949 } 2337 }
2338#endif
1950 2339
1951 if (expect_false (!activecnt)) 2340 if (expect_false (loop_done))
1952 break; 2341 break;
1953 2342
1954 /* we might have forked, so reify kernel state if necessary */ 2343 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork)) 2344 if (expect_false (postfork))
1956 loop_fork (EV_A); 2345 loop_fork (EV_A);
… …
1963 ev_tstamp waittime = 0.; 2352 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.; 2353 ev_tstamp sleeptime = 0.;
1965 2354
1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967 { 2356 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
1968 /* update time to cancel out callback processing overhead */ 2360 /* update time to cancel out callback processing overhead */
1969 time_update (EV_A_ 1e100); 2361 time_update (EV_A_ 1e100);
1970 2362
1971 waittime = MAX_BLOCKTIME; 2363 waittime = MAX_BLOCKTIME;
1972 2364
… …
1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983 if (waittime > to) waittime = to; 2375 if (waittime > to) waittime = to;
1984 } 2376 }
1985#endif 2377#endif
1986 2378
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */
1987 if (expect_false (waittime < timeout_blocktime)) 2380 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime; 2381 waittime = timeout_blocktime;
1989 2382
1990 sleeptime = waittime - backend_fudge; 2383 /* extra check because io_blocktime is commonly 0 */
1991
1992 if (expect_true (sleeptime > io_blocktime)) 2384 if (expect_false (io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 { 2385 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387
2388 if (sleeptime > waittime - backend_fudge)
2389 sleeptime = waittime - backend_fudge;
2390
2391 if (expect_true (sleeptime > 0.))
2392 {
1997 ev_sleep (sleeptime); 2393 ev_sleep (sleeptime);
1998 waittime -= sleeptime; 2394 waittime -= sleeptime;
2395 }
1999 } 2396 }
2000 } 2397 }
2001 2398
2399#if EV_FEATURE_API
2002 ++loop_count; 2400 ++loop_count;
2401#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2003 backend_poll (EV_A_ waittime); 2403 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2004 2405
2005 /* update ev_rt_now, do magic */ 2406 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime); 2407 time_update (EV_A_ waittime + sleeptime);
2007 } 2408 }
2008 2409
… …
2015#if EV_IDLE_ENABLE 2416#if EV_IDLE_ENABLE
2016 /* queue idle watchers unless other events are pending */ 2417 /* queue idle watchers unless other events are pending */
2017 idle_reify (EV_A); 2418 idle_reify (EV_A);
2018#endif 2419#endif
2019 2420
2421#if EV_CHECK_ENABLE
2020 /* queue check watchers, to be executed first */ 2422 /* queue check watchers, to be executed first */
2021 if (expect_false (checkcnt)) 2423 if (expect_false (checkcnt))
2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2424 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2425#endif
2023 2426
2024 call_pending (EV_A); 2427 EV_INVOKE_PENDING;
2025 } 2428 }
2026 while (expect_true ( 2429 while (expect_true (
2027 activecnt 2430 activecnt
2028 && !loop_done 2431 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 )); 2433 ));
2031 2434
2032 if (loop_done == EVUNLOOP_ONE) 2435 if (loop_done == EVUNLOOP_ONE)
2033 loop_done = EVUNLOOP_CANCEL; 2436 loop_done = EVUNLOOP_CANCEL;
2437
2438#if EV_FEATURE_API
2439 --loop_depth;
2440#endif
2034} 2441}
2035 2442
2036void 2443void
2037ev_unloop (EV_P_ int how) 2444ev_unloop (EV_P_ int how)
2038{ 2445{
2039 loop_done = how; 2446 loop_done = how;
2040} 2447}
2041 2448
2449void
2450ev_ref (EV_P)
2451{
2452 ++activecnt;
2453}
2454
2455void
2456ev_unref (EV_P)
2457{
2458 --activecnt;
2459}
2460
2461void
2462ev_now_update (EV_P)
2463{
2464 time_update (EV_A_ 1e100);
2465}
2466
2467void
2468ev_suspend (EV_P)
2469{
2470 ev_now_update (EV_A);
2471}
2472
2473void
2474ev_resume (EV_P)
2475{
2476 ev_tstamp mn_prev = mn_now;
2477
2478 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev);
2480#if EV_PERIODIC_ENABLE
2481 /* TODO: really do this? */
2482 periodics_reschedule (EV_A);
2483#endif
2484}
2485
2042/*****************************************************************************/ 2486/*****************************************************************************/
2487/* singly-linked list management, used when the expected list length is short */
2043 2488
2044void inline_size 2489inline_size void
2045wlist_add (WL *head, WL elem) 2490wlist_add (WL *head, WL elem)
2046{ 2491{
2047 elem->next = *head; 2492 elem->next = *head;
2048 *head = elem; 2493 *head = elem;
2049} 2494}
2050 2495
2051void inline_size 2496inline_size void
2052wlist_del (WL *head, WL elem) 2497wlist_del (WL *head, WL elem)
2053{ 2498{
2054 while (*head) 2499 while (*head)
2055 { 2500 {
2056 if (*head == elem) 2501 if (expect_true (*head == elem))
2057 { 2502 {
2058 *head = elem->next; 2503 *head = elem->next;
2059 return; 2504 break;
2060 } 2505 }
2061 2506
2062 head = &(*head)->next; 2507 head = &(*head)->next;
2063 } 2508 }
2064} 2509}
2065 2510
2066void inline_speed 2511/* internal, faster, version of ev_clear_pending */
2512inline_speed void
2067clear_pending (EV_P_ W w) 2513clear_pending (EV_P_ W w)
2068{ 2514{
2069 if (w->pending) 2515 if (w->pending)
2070 { 2516 {
2071 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2517 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072 w->pending = 0; 2518 w->pending = 0;
2073 } 2519 }
2074} 2520}
2075 2521
2076int 2522int
… …
2080 int pending = w_->pending; 2526 int pending = w_->pending;
2081 2527
2082 if (expect_true (pending)) 2528 if (expect_true (pending))
2083 { 2529 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2530 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2531 p->w = (W)&pending_w;
2085 w_->pending = 0; 2532 w_->pending = 0;
2086 p->w = 0;
2087 return p->events; 2533 return p->events;
2088 } 2534 }
2089 else 2535 else
2090 return 0; 2536 return 0;
2091} 2537}
2092 2538
2093void inline_size 2539inline_size void
2094pri_adjust (EV_P_ W w) 2540pri_adjust (EV_P_ W w)
2095{ 2541{
2096 int pri = w->priority; 2542 int pri = ev_priority (w);
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2543 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2544 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri; 2545 ev_set_priority (w, pri);
2100} 2546}
2101 2547
2102void inline_speed 2548inline_speed void
2103ev_start (EV_P_ W w, int active) 2549ev_start (EV_P_ W w, int active)
2104{ 2550{
2105 pri_adjust (EV_A_ w); 2551 pri_adjust (EV_A_ w);
2106 w->active = active; 2552 w->active = active;
2107 ev_ref (EV_A); 2553 ev_ref (EV_A);
2108} 2554}
2109 2555
2110void inline_size 2556inline_size void
2111ev_stop (EV_P_ W w) 2557ev_stop (EV_P_ W w)
2112{ 2558{
2113 ev_unref (EV_A); 2559 ev_unref (EV_A);
2114 w->active = 0; 2560 w->active = 0;
2115} 2561}
… …
2122 int fd = w->fd; 2568 int fd = w->fd;
2123 2569
2124 if (expect_false (ev_is_active (w))) 2570 if (expect_false (ev_is_active (w)))
2125 return; 2571 return;
2126 2572
2127 assert (("ev_io_start called with negative fd", fd >= 0)); 2573 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2574 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128 2575
2129 EV_FREQUENT_CHECK; 2576 EV_FREQUENT_CHECK;
2130 2577
2131 ev_start (EV_A_ (W)w, 1); 2578 ev_start (EV_A_ (W)w, 1);
2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133 wlist_add (&anfds[fd].head, (WL)w); 2580 wlist_add (&anfds[fd].head, (WL)w);
2134 2581
2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136 w->events &= ~EV_IOFDSET; 2583 w->events &= ~EV__IOFDSET;
2137 2584
2138 EV_FREQUENT_CHECK; 2585 EV_FREQUENT_CHECK;
2139} 2586}
2140 2587
2141void noinline 2588void noinline
… …
2143{ 2590{
2144 clear_pending (EV_A_ (W)w); 2591 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2592 if (expect_false (!ev_is_active (w)))
2146 return; 2593 return;
2147 2594
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2595 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149 2596
2150 EV_FREQUENT_CHECK; 2597 EV_FREQUENT_CHECK;
2151 2598
2152 wlist_del (&anfds[w->fd].head, (WL)w); 2599 wlist_del (&anfds[w->fd].head, (WL)w);
2153 ev_stop (EV_A_ (W)w); 2600 ev_stop (EV_A_ (W)w);
… …
2163 if (expect_false (ev_is_active (w))) 2610 if (expect_false (ev_is_active (w)))
2164 return; 2611 return;
2165 2612
2166 ev_at (w) += mn_now; 2613 ev_at (w) += mn_now;
2167 2614
2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2615 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169 2616
2170 EV_FREQUENT_CHECK; 2617 EV_FREQUENT_CHECK;
2171 2618
2172 ++timercnt; 2619 ++timercnt;
2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2620 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2176 ANHE_at_cache (timers [ev_active (w)]); 2623 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w)); 2624 upheap (timers, ev_active (w));
2178 2625
2179 EV_FREQUENT_CHECK; 2626 EV_FREQUENT_CHECK;
2180 2627
2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182} 2629}
2183 2630
2184void noinline 2631void noinline
2185ev_timer_stop (EV_P_ ev_timer *w) 2632ev_timer_stop (EV_P_ ev_timer *w)
2186{ 2633{
… …
2191 EV_FREQUENT_CHECK; 2638 EV_FREQUENT_CHECK;
2192 2639
2193 { 2640 {
2194 int active = ev_active (w); 2641 int active = ev_active (w);
2195 2642
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2643 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197 2644
2198 --timercnt; 2645 --timercnt;
2199 2646
2200 if (expect_true (active < timercnt + HEAP0)) 2647 if (expect_true (active < timercnt + HEAP0))
2201 { 2648 {
2202 timers [active] = timers [timercnt + HEAP0]; 2649 timers [active] = timers [timercnt + HEAP0];
2203 adjustheap (timers, timercnt, active); 2650 adjustheap (timers, timercnt, active);
2204 } 2651 }
2205 } 2652 }
2206 2653
2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now; 2654 ev_at (w) -= mn_now;
2210 2655
2211 ev_stop (EV_A_ (W)w); 2656 ev_stop (EV_A_ (W)w);
2657
2658 EV_FREQUENT_CHECK;
2212} 2659}
2213 2660
2214void noinline 2661void noinline
2215ev_timer_again (EV_P_ ev_timer *w) 2662ev_timer_again (EV_P_ ev_timer *w)
2216{ 2663{
… …
2234 } 2681 }
2235 2682
2236 EV_FREQUENT_CHECK; 2683 EV_FREQUENT_CHECK;
2237} 2684}
2238 2685
2686ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w)
2688{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2690}
2691
2239#if EV_PERIODIC_ENABLE 2692#if EV_PERIODIC_ENABLE
2240void noinline 2693void noinline
2241ev_periodic_start (EV_P_ ev_periodic *w) 2694ev_periodic_start (EV_P_ ev_periodic *w)
2242{ 2695{
2243 if (expect_false (ev_is_active (w))) 2696 if (expect_false (ev_is_active (w)))
… …
2245 2698
2246 if (w->reschedule_cb) 2699 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval) 2701 else if (w->interval)
2249 { 2702 {
2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251 /* this formula differs from the one in periodic_reify because we do not always round up */ 2704 /* this formula differs from the one in periodic_reify because we do not always round up */
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 } 2706 }
2254 else 2707 else
2255 ev_at (w) = w->offset; 2708 ev_at (w) = w->offset;
… …
2263 ANHE_at_cache (periodics [ev_active (w)]); 2716 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w)); 2717 upheap (periodics, ev_active (w));
2265 2718
2266 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2267 2720
2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269} 2722}
2270 2723
2271void noinline 2724void noinline
2272ev_periodic_stop (EV_P_ ev_periodic *w) 2725ev_periodic_stop (EV_P_ ev_periodic *w)
2273{ 2726{
… …
2278 EV_FREQUENT_CHECK; 2731 EV_FREQUENT_CHECK;
2279 2732
2280 { 2733 {
2281 int active = ev_active (w); 2734 int active = ev_active (w);
2282 2735
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2736 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284 2737
2285 --periodiccnt; 2738 --periodiccnt;
2286 2739
2287 if (expect_true (active < periodiccnt + HEAP0)) 2740 if (expect_true (active < periodiccnt + HEAP0))
2288 { 2741 {
2289 periodics [active] = periodics [periodiccnt + HEAP0]; 2742 periodics [active] = periodics [periodiccnt + HEAP0];
2290 adjustheap (periodics, periodiccnt, active); 2743 adjustheap (periodics, periodiccnt, active);
2291 } 2744 }
2292 } 2745 }
2293 2746
2294 EV_FREQUENT_CHECK;
2295
2296 ev_stop (EV_A_ (W)w); 2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
2297} 2750}
2298 2751
2299void noinline 2752void noinline
2300ev_periodic_again (EV_P_ ev_periodic *w) 2753ev_periodic_again (EV_P_ ev_periodic *w)
2301{ 2754{
… …
2307 2760
2308#ifndef SA_RESTART 2761#ifndef SA_RESTART
2309# define SA_RESTART 0 2762# define SA_RESTART 0
2310#endif 2763#endif
2311 2764
2765#if EV_SIGNAL_ENABLE
2766
2312void noinline 2767void noinline
2313ev_signal_start (EV_P_ ev_signal *w) 2768ev_signal_start (EV_P_ ev_signal *w)
2314{ 2769{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
2318 if (expect_false (ev_is_active (w))) 2770 if (expect_false (ev_is_active (w)))
2319 return; 2771 return;
2320 2772
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2322 2774
2323 evpipe_init (EV_A); 2775#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2324 2778
2325 EV_FREQUENT_CHECK; 2779 signals [w->signum - 1].loop = EV_A;
2780#endif
2326 2781
2782 EV_FREQUENT_CHECK;
2783
2784#if EV_USE_SIGNALFD
2785 if (sigfd == -2)
2327 { 2786 {
2328#ifndef _WIN32 2787 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2329 sigset_t full, prev; 2788 if (sigfd < 0 && errno == EINVAL)
2330 sigfillset (&full); 2789 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333 2790
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2791 if (sigfd >= 0)
2792 {
2793 fd_intern (sigfd); /* doing it twice will not hurt */
2335 2794
2336#ifndef _WIN32 2795 sigemptyset (&sigfd_set);
2337 sigprocmask (SIG_SETMASK, &prev, 0); 2796
2338#endif 2797 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2798 ev_set_priority (&sigfd_w, EV_MAXPRI);
2799 ev_io_start (EV_A_ &sigfd_w);
2800 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2801 }
2339 } 2802 }
2803
2804 if (sigfd >= 0)
2805 {
2806 /* TODO: check .head */
2807 sigaddset (&sigfd_set, w->signum);
2808 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2809
2810 signalfd (sigfd, &sigfd_set, 0);
2811 }
2812#endif
2340 2813
2341 ev_start (EV_A_ (W)w, 1); 2814 ev_start (EV_A_ (W)w, 1);
2342 wlist_add (&signals [w->signum - 1].head, (WL)w); 2815 wlist_add (&signals [w->signum - 1].head, (WL)w);
2343 2816
2344 if (!((WL)w)->next) 2817 if (!((WL)w)->next)
2818# if EV_USE_SIGNALFD
2819 if (sigfd < 0) /*TODO*/
2820# endif
2345 { 2821 {
2346#if _WIN32 2822# ifdef _WIN32
2823 evpipe_init (EV_A);
2824
2347 signal (w->signum, ev_sighandler); 2825 signal (w->signum, ev_sighandler);
2348#else 2826# else
2349 struct sigaction sa; 2827 struct sigaction sa;
2828
2829 evpipe_init (EV_A);
2830
2350 sa.sa_handler = ev_sighandler; 2831 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask); 2832 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0); 2834 sigaction (w->signum, &sa, 0);
2835
2836 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2354#endif 2839#endif
2355 } 2840 }
2356 2841
2357 EV_FREQUENT_CHECK; 2842 EV_FREQUENT_CHECK;
2358} 2843}
2359 2844
2360void noinline 2845void noinline
… …
2368 2853
2369 wlist_del (&signals [w->signum - 1].head, (WL)w); 2854 wlist_del (&signals [w->signum - 1].head, (WL)w);
2370 ev_stop (EV_A_ (W)w); 2855 ev_stop (EV_A_ (W)w);
2371 2856
2372 if (!signals [w->signum - 1].head) 2857 if (!signals [w->signum - 1].head)
2858 {
2859#if EV_MULTIPLICITY
2860 signals [w->signum - 1].loop = 0; /* unattach from signal */
2861#endif
2862#if EV_USE_SIGNALFD
2863 if (sigfd >= 0)
2864 {
2865 sigset_t ss;
2866
2867 sigemptyset (&ss);
2868 sigaddset (&ss, w->signum);
2869 sigdelset (&sigfd_set, w->signum);
2870
2871 signalfd (sigfd, &sigfd_set, 0);
2872 sigprocmask (SIG_UNBLOCK, &ss, 0);
2873 }
2874 else
2875#endif
2373 signal (w->signum, SIG_DFL); 2876 signal (w->signum, SIG_DFL);
2877 }
2374 2878
2375 EV_FREQUENT_CHECK; 2879 EV_FREQUENT_CHECK;
2376} 2880}
2881
2882#endif
2883
2884#if EV_CHILD_ENABLE
2377 2885
2378void 2886void
2379ev_child_start (EV_P_ ev_child *w) 2887ev_child_start (EV_P_ ev_child *w)
2380{ 2888{
2381#if EV_MULTIPLICITY 2889#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif 2891#endif
2384 if (expect_false (ev_is_active (w))) 2892 if (expect_false (ev_is_active (w)))
2385 return; 2893 return;
2386 2894
2387 EV_FREQUENT_CHECK; 2895 EV_FREQUENT_CHECK;
2388 2896
2389 ev_start (EV_A_ (W)w, 1); 2897 ev_start (EV_A_ (W)w, 1);
2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2898 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2391 2899
2392 EV_FREQUENT_CHECK; 2900 EV_FREQUENT_CHECK;
2393} 2901}
2394 2902
2395void 2903void
… …
2399 if (expect_false (!ev_is_active (w))) 2907 if (expect_false (!ev_is_active (w)))
2400 return; 2908 return;
2401 2909
2402 EV_FREQUENT_CHECK; 2910 EV_FREQUENT_CHECK;
2403 2911
2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2912 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2405 ev_stop (EV_A_ (W)w); 2913 ev_stop (EV_A_ (W)w);
2406 2914
2407 EV_FREQUENT_CHECK; 2915 EV_FREQUENT_CHECK;
2408} 2916}
2917
2918#endif
2409 2919
2410#if EV_STAT_ENABLE 2920#if EV_STAT_ENABLE
2411 2921
2412# ifdef _WIN32 2922# ifdef _WIN32
2413# undef lstat 2923# undef lstat
2414# define lstat(a,b) _stati64 (a,b) 2924# define lstat(a,b) _stati64 (a,b)
2415# endif 2925# endif
2416 2926
2417#define DEF_STAT_INTERVAL 5.0074891 2927#define DEF_STAT_INTERVAL 5.0074891
2928#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418#define MIN_STAT_INTERVAL 0.1074891 2929#define MIN_STAT_INTERVAL 0.1074891
2419 2930
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2931static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421 2932
2422#if EV_USE_INOTIFY 2933#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192 2934
2935/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2424 2937
2425static void noinline 2938static void noinline
2426infy_add (EV_P_ ev_stat *w) 2939infy_add (EV_P_ ev_stat *w)
2427{ 2940{
2428 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2941 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2429 2942
2430 if (w->wd < 0) 2943 if (w->wd >= 0)
2944 {
2945 struct statfs sfs;
2946
2947 /* now local changes will be tracked by inotify, but remote changes won't */
2948 /* unless the filesystem is known to be local, we therefore still poll */
2949 /* also do poll on <2.6.25, but with normal frequency */
2950
2951 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */
2956 || sfs.f_type == 0x3153464a /* jfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */
2959 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2431 { 2963 }
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2964 else
2965 {
2966 /* can't use inotify, continue to stat */
2967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2433 2968
2434 /* monitor some parent directory for speedup hints */ 2969 /* if path is not there, monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2970 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2436 /* but an efficiency issue only */ 2971 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2972 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 { 2973 {
2439 char path [4096]; 2974 char path [4096];
2440 strcpy (path, w->path); 2975 strcpy (path, w->path);
… …
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2979 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2980 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446 2981
2447 char *pend = strrchr (path, '/'); 2982 char *pend = strrchr (path, '/');
2448 2983
2449 if (!pend) 2984 if (!pend || pend == path)
2450 break; /* whoops, no '/', complain to your admin */ 2985 break;
2451 2986
2452 *pend = 0; 2987 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask); 2988 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 } 2989 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 } 2991 }
2457 } 2992 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460 2993
2461 if (w->wd >= 0) 2994 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2995 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2996
2997 /* now re-arm timer, if required */
2998 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2999 ev_timer_again (EV_A_ &w->timer);
3000 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2463} 3001}
2464 3002
2465static void noinline 3003static void noinline
2466infy_del (EV_P_ ev_stat *w) 3004infy_del (EV_P_ ev_stat *w)
2467{ 3005{
… …
2470 3008
2471 if (wd < 0) 3009 if (wd < 0)
2472 return; 3010 return;
2473 3011
2474 w->wd = -2; 3012 w->wd = -2;
2475 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3013 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2476 wlist_del (&fs_hash [slot].head, (WL)w); 3014 wlist_del (&fs_hash [slot].head, (WL)w);
2477 3015
2478 /* remove this watcher, if others are watching it, they will rearm */ 3016 /* remove this watcher, if others are watching it, they will rearm */
2479 inotify_rm_watch (fs_fd, wd); 3017 inotify_rm_watch (fs_fd, wd);
2480} 3018}
2481 3019
2482static void noinline 3020static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3021infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{ 3022{
2485 if (slot < 0) 3023 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */ 3024 /* overflow, need to check for all hash slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3025 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2488 infy_wd (EV_A_ slot, wd, ev); 3026 infy_wd (EV_A_ slot, wd, ev);
2489 else 3027 else
2490 { 3028 {
2491 WL w_; 3029 WL w_;
2492 3030
2493 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3031 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2494 { 3032 {
2495 ev_stat *w = (ev_stat *)w_; 3033 ev_stat *w = (ev_stat *)w_;
2496 w_ = w_->next; /* lets us remove this watcher and all before it */ 3034 w_ = w_->next; /* lets us remove this watcher and all before it */
2497 3035
2498 if (w->wd == wd || wd == -1) 3036 if (w->wd == wd || wd == -1)
2499 { 3037 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3038 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 { 3039 {
3040 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2502 w->wd = -1; 3041 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3042 infy_add (EV_A_ w); /* re-add, no matter what */
2504 } 3043 }
2505 3044
2506 stat_timer_cb (EV_A_ &w->timer, 0); 3045 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2511 3050
2512static void 3051static void
2513infy_cb (EV_P_ ev_io *w, int revents) 3052infy_cb (EV_P_ ev_io *w, int revents)
2514{ 3053{
2515 char buf [EV_INOTIFY_BUFSIZE]; 3054 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs; 3055 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf)); 3056 int len = read (fs_fd, buf, sizeof (buf));
2519 3057
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3058 for (ofs = 0; ofs < len; )
3059 {
3060 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3061 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len;
3063 }
2522} 3064}
2523 3065
2524void inline_size 3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void
3099ev_check_2625 (EV_P)
3100{
3101 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */
3104 if (ev_linux_version () < 0x020619)
3105 return;
3106
3107 fs_2625 = 1;
3108}
3109
3110inline_size int
3111infy_newfd (void)
3112{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0)
3116 return fd;
3117#endif
3118 return inotify_init ();
3119}
3120
3121inline_size void
2525infy_init (EV_P) 3122infy_init (EV_P)
2526{ 3123{
2527 if (fs_fd != -2) 3124 if (fs_fd != -2)
2528 return; 3125 return;
2529 3126
3127 fs_fd = -1;
3128
3129 ev_check_2625 (EV_A);
3130
2530 fs_fd = inotify_init (); 3131 fs_fd = infy_newfd ();
2531 3132
2532 if (fs_fd >= 0) 3133 if (fs_fd >= 0)
2533 { 3134 {
3135 fd_intern (fs_fd);
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3136 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI); 3137 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w); 3138 ev_io_start (EV_A_ &fs_w);
3139 ev_unref (EV_A);
2537 } 3140 }
2538} 3141}
2539 3142
2540void inline_size 3143inline_size void
2541infy_fork (EV_P) 3144infy_fork (EV_P)
2542{ 3145{
2543 int slot; 3146 int slot;
2544 3147
2545 if (fs_fd < 0) 3148 if (fs_fd < 0)
2546 return; 3149 return;
2547 3150
3151 ev_ref (EV_A);
3152 ev_io_stop (EV_A_ &fs_w);
2548 close (fs_fd); 3153 close (fs_fd);
2549 fs_fd = inotify_init (); 3154 fs_fd = infy_newfd ();
2550 3155
3156 if (fs_fd >= 0)
3157 {
3158 fd_intern (fs_fd);
3159 ev_io_set (&fs_w, fs_fd, EV_READ);
3160 ev_io_start (EV_A_ &fs_w);
3161 ev_unref (EV_A);
3162 }
3163
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3164 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2552 { 3165 {
2553 WL w_ = fs_hash [slot].head; 3166 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0; 3167 fs_hash [slot].head = 0;
2555 3168
2556 while (w_) 3169 while (w_)
… …
2561 w->wd = -1; 3174 w->wd = -1;
2562 3175
2563 if (fs_fd >= 0) 3176 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */ 3177 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else 3178 else
3179 {
3180 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3181 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2566 ev_timer_start (EV_A_ &w->timer); 3182 ev_timer_again (EV_A_ &w->timer);
3183 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3184 }
2567 } 3185 }
2568
2569 } 3186 }
2570} 3187}
2571 3188
3189#endif
3190
3191#ifdef _WIN32
3192# define EV_LSTAT(p,b) _stati64 (p, b)
3193#else
3194# define EV_LSTAT(p,b) lstat (p, b)
2572#endif 3195#endif
2573 3196
2574void 3197void
2575ev_stat_stat (EV_P_ ev_stat *w) 3198ev_stat_stat (EV_P_ ev_stat *w)
2576{ 3199{
… …
2583static void noinline 3206static void noinline
2584stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3207stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2585{ 3208{
2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3209 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2587 3210
2588 /* we copy this here each the time so that */ 3211 ev_statdata prev = w->attr;
2589 /* prev has the old value when the callback gets invoked */
2590 w->prev = w->attr;
2591 ev_stat_stat (EV_A_ w); 3212 ev_stat_stat (EV_A_ w);
2592 3213
2593 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3214 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2594 if ( 3215 if (
2595 w->prev.st_dev != w->attr.st_dev 3216 prev.st_dev != w->attr.st_dev
2596 || w->prev.st_ino != w->attr.st_ino 3217 || prev.st_ino != w->attr.st_ino
2597 || w->prev.st_mode != w->attr.st_mode 3218 || prev.st_mode != w->attr.st_mode
2598 || w->prev.st_nlink != w->attr.st_nlink 3219 || prev.st_nlink != w->attr.st_nlink
2599 || w->prev.st_uid != w->attr.st_uid 3220 || prev.st_uid != w->attr.st_uid
2600 || w->prev.st_gid != w->attr.st_gid 3221 || prev.st_gid != w->attr.st_gid
2601 || w->prev.st_rdev != w->attr.st_rdev 3222 || prev.st_rdev != w->attr.st_rdev
2602 || w->prev.st_size != w->attr.st_size 3223 || prev.st_size != w->attr.st_size
2603 || w->prev.st_atime != w->attr.st_atime 3224 || prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime 3225 || prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime 3226 || prev.st_ctime != w->attr.st_ctime
2606 ) { 3227 ) {
3228 /* we only update w->prev on actual differences */
3229 /* in case we test more often than invoke the callback, */
3230 /* to ensure that prev is always different to attr */
3231 w->prev = prev;
3232
2607 #if EV_USE_INOTIFY 3233 #if EV_USE_INOTIFY
3234 if (fs_fd >= 0)
3235 {
2608 infy_del (EV_A_ w); 3236 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w); 3237 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */ 3238 ev_stat_stat (EV_A_ w); /* avoid race... */
3239 }
2611 #endif 3240 #endif
2612 3241
2613 ev_feed_event (EV_A_ w, EV_STAT); 3242 ev_feed_event (EV_A_ w, EV_STAT);
2614 } 3243 }
2615} 3244}
… …
2618ev_stat_start (EV_P_ ev_stat *w) 3247ev_stat_start (EV_P_ ev_stat *w)
2619{ 3248{
2620 if (expect_false (ev_is_active (w))) 3249 if (expect_false (ev_is_active (w)))
2621 return; 3250 return;
2622 3251
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w); 3252 ev_stat_stat (EV_A_ w);
2628 3253
3254 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629 if (w->interval < MIN_STAT_INTERVAL) 3255 w->interval = MIN_STAT_INTERVAL;
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631 3256
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3257 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633 ev_set_priority (&w->timer, ev_priority (w)); 3258 ev_set_priority (&w->timer, ev_priority (w));
2634 3259
2635#if EV_USE_INOTIFY 3260#if EV_USE_INOTIFY
2636 infy_init (EV_A); 3261 infy_init (EV_A);
2637 3262
2638 if (fs_fd >= 0) 3263 if (fs_fd >= 0)
2639 infy_add (EV_A_ w); 3264 infy_add (EV_A_ w);
2640 else 3265 else
2641#endif 3266#endif
3267 {
2642 ev_timer_start (EV_A_ &w->timer); 3268 ev_timer_again (EV_A_ &w->timer);
3269 ev_unref (EV_A);
3270 }
2643 3271
2644 ev_start (EV_A_ (W)w, 1); 3272 ev_start (EV_A_ (W)w, 1);
2645 3273
2646 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2647} 3275}
… …
2656 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2657 3285
2658#if EV_USE_INOTIFY 3286#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w); 3287 infy_del (EV_A_ w);
2660#endif 3288#endif
3289
3290 if (ev_is_active (&w->timer))
3291 {
3292 ev_ref (EV_A);
2661 ev_timer_stop (EV_A_ &w->timer); 3293 ev_timer_stop (EV_A_ &w->timer);
3294 }
2662 3295
2663 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
2664 3297
2665 EV_FREQUENT_CHECK; 3298 EV_FREQUENT_CHECK;
2666} 3299}
… …
2711 3344
2712 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2713} 3346}
2714#endif 3347#endif
2715 3348
3349#if EV_PREPARE_ENABLE
2716void 3350void
2717ev_prepare_start (EV_P_ ev_prepare *w) 3351ev_prepare_start (EV_P_ ev_prepare *w)
2718{ 3352{
2719 if (expect_false (ev_is_active (w))) 3353 if (expect_false (ev_is_active (w)))
2720 return; 3354 return;
… …
2746 3380
2747 ev_stop (EV_A_ (W)w); 3381 ev_stop (EV_A_ (W)w);
2748 3382
2749 EV_FREQUENT_CHECK; 3383 EV_FREQUENT_CHECK;
2750} 3384}
3385#endif
2751 3386
3387#if EV_CHECK_ENABLE
2752void 3388void
2753ev_check_start (EV_P_ ev_check *w) 3389ev_check_start (EV_P_ ev_check *w)
2754{ 3390{
2755 if (expect_false (ev_is_active (w))) 3391 if (expect_false (ev_is_active (w)))
2756 return; 3392 return;
… …
2782 3418
2783 ev_stop (EV_A_ (W)w); 3419 ev_stop (EV_A_ (W)w);
2784 3420
2785 EV_FREQUENT_CHECK; 3421 EV_FREQUENT_CHECK;
2786} 3422}
3423#endif
2787 3424
2788#if EV_EMBED_ENABLE 3425#if EV_EMBED_ENABLE
2789void noinline 3426void noinline
2790ev_embed_sweep (EV_P_ ev_embed *w) 3427ev_embed_sweep (EV_P_ ev_embed *w)
2791{ 3428{
… …
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{ 3445{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3446 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810 3447
2811 { 3448 {
2812 struct ev_loop *loop = w->other; 3449 EV_P = w->other;
2813 3450
2814 while (fdchangecnt) 3451 while (fdchangecnt)
2815 { 3452 {
2816 fd_reify (EV_A); 3453 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3454 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818 } 3455 }
2819 } 3456 }
2820} 3457}
2821 3458
3459static void
3460embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3461{
3462 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3463
3464 ev_embed_stop (EV_A_ w);
3465
3466 {
3467 EV_P = w->other;
3468
3469 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3471 }
3472
3473 ev_embed_start (EV_A_ w);
3474}
3475
2822#if 0 3476#if 0
2823static void 3477static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3478embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825{ 3479{
2826 ev_idle_stop (EV_A_ idle); 3480 ev_idle_stop (EV_A_ idle);
… …
2832{ 3486{
2833 if (expect_false (ev_is_active (w))) 3487 if (expect_false (ev_is_active (w)))
2834 return; 3488 return;
2835 3489
2836 { 3490 {
2837 struct ev_loop *loop = w->other; 3491 EV_P = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3492 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3493 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 } 3494 }
2841 3495
2842 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2843 3497
… …
2846 3500
2847 ev_prepare_init (&w->prepare, embed_prepare_cb); 3501 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI); 3502 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare); 3503 ev_prepare_start (EV_A_ &w->prepare);
2850 3504
3505 ev_fork_init (&w->fork, embed_fork_cb);
3506 ev_fork_start (EV_A_ &w->fork);
3507
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3508 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852 3509
2853 ev_start (EV_A_ (W)w, 1); 3510 ev_start (EV_A_ (W)w, 1);
2854 3511
2855 EV_FREQUENT_CHECK; 3512 EV_FREQUENT_CHECK;
… …
2862 if (expect_false (!ev_is_active (w))) 3519 if (expect_false (!ev_is_active (w)))
2863 return; 3520 return;
2864 3521
2865 EV_FREQUENT_CHECK; 3522 EV_FREQUENT_CHECK;
2866 3523
2867 ev_io_stop (EV_A_ &w->io); 3524 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare); 3525 ev_prepare_stop (EV_A_ &w->prepare);
3526 ev_fork_stop (EV_A_ &w->fork);
2869 3527
2870 ev_stop (EV_A_ (W)w); 3528 ev_stop (EV_A_ (W)w);
2871 3529
2872 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
2873} 3531}
… …
2952 3610
2953void 3611void
2954ev_async_send (EV_P_ ev_async *w) 3612ev_async_send (EV_P_ ev_async *w)
2955{ 3613{
2956 w->sent = 1; 3614 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync); 3615 evpipe_write (EV_A_ &async_pending);
2958} 3616}
2959#endif 3617#endif
2960 3618
2961/*****************************************************************************/ 3619/*****************************************************************************/
2962 3620
… …
2972once_cb (EV_P_ struct ev_once *once, int revents) 3630once_cb (EV_P_ struct ev_once *once, int revents)
2973{ 3631{
2974 void (*cb)(int revents, void *arg) = once->cb; 3632 void (*cb)(int revents, void *arg) = once->cb;
2975 void *arg = once->arg; 3633 void *arg = once->arg;
2976 3634
2977 ev_io_stop (EV_A_ &once->io); 3635 ev_io_stop (EV_A_ &once->io);
2978 ev_timer_stop (EV_A_ &once->to); 3636 ev_timer_stop (EV_A_ &once->to);
2979 ev_free (once); 3637 ev_free (once);
2980 3638
2981 cb (revents, arg); 3639 cb (revents, arg);
2982} 3640}
2983 3641
2984static void 3642static void
2985once_cb_io (EV_P_ ev_io *w, int revents) 3643once_cb_io (EV_P_ ev_io *w, int revents)
2986{ 3644{
2987 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3645 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3646
3647 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988} 3648}
2989 3649
2990static void 3650static void
2991once_cb_to (EV_P_ ev_timer *w, int revents) 3651once_cb_to (EV_P_ ev_timer *w, int revents)
2992{ 3652{
2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3653 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3654
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994} 3656}
2995 3657
2996void 3658void
2997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998{ 3660{
2999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3000 3662
3001 if (expect_false (!once)) 3663 if (expect_false (!once))
3002 { 3664 {
3003 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3665 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3004 return; 3666 return;
3005 } 3667 }
3006 3668
3007 once->cb = cb; 3669 once->cb = cb;
3008 once->arg = arg; 3670 once->arg = arg;
… …
3020 ev_timer_set (&once->to, timeout, 0.); 3682 ev_timer_set (&once->to, timeout, 0.);
3021 ev_timer_start (EV_A_ &once->to); 3683 ev_timer_start (EV_A_ &once->to);
3022 } 3684 }
3023} 3685}
3024 3686
3687/*****************************************************************************/
3688
3689#if EV_WALK_ENABLE
3690void
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3692{
3693 int i, j;
3694 ev_watcher_list *wl, *wn;
3695
3696 if (types & (EV_IO | EV_EMBED))
3697 for (i = 0; i < anfdmax; ++i)
3698 for (wl = anfds [i].head; wl; )
3699 {
3700 wn = wl->next;
3701
3702#if EV_EMBED_ENABLE
3703 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3704 {
3705 if (types & EV_EMBED)
3706 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3707 }
3708 else
3709#endif
3710#if EV_USE_INOTIFY
3711 if (ev_cb ((ev_io *)wl) == infy_cb)
3712 ;
3713 else
3714#endif
3715 if ((ev_io *)wl != &pipe_w)
3716 if (types & EV_IO)
3717 cb (EV_A_ EV_IO, wl);
3718
3719 wl = wn;
3720 }
3721
3722 if (types & (EV_TIMER | EV_STAT))
3723 for (i = timercnt + HEAP0; i-- > HEAP0; )
3724#if EV_STAT_ENABLE
3725 /*TODO: timer is not always active*/
3726 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3727 {
3728 if (types & EV_STAT)
3729 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3730 }
3731 else
3732#endif
3733 if (types & EV_TIMER)
3734 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3735
3736#if EV_PERIODIC_ENABLE
3737 if (types & EV_PERIODIC)
3738 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif
3741
3742#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; )
3745 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif
3748
3749#if EV_FORK_ENABLE
3750 if (types & EV_FORK)
3751 for (i = forkcnt; i--; )
3752 if (ev_cb (forks [i]) != embed_fork_cb)
3753 cb (EV_A_ EV_FORK, forks [i]);
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757 if (types & EV_ASYNC)
3758 for (i = asynccnt; i--; )
3759 cb (EV_A_ EV_ASYNC, asyncs [i]);
3760#endif
3761
3762#if EV_PREPARE_ENABLE
3763 if (types & EV_PREPARE)
3764 for (i = preparecnt; i--; )
3765# if EV_EMBED_ENABLE
3766 if (ev_cb (prepares [i]) != embed_prepare_cb)
3767# endif
3768 cb (EV_A_ EV_PREPARE, prepares [i]);
3769#endif
3770
3771#if EV_CHECK_ENABLE
3772 if (types & EV_CHECK)
3773 for (i = checkcnt; i--; )
3774 cb (EV_A_ EV_CHECK, checks [i]);
3775#endif
3776
3777#if EV_SIGNAL_ENABLE
3778 if (types & EV_SIGNAL)
3779 for (i = 0; i < EV_NSIG - 1; ++i)
3780 for (wl = signals [i].head; wl; )
3781 {
3782 wn = wl->next;
3783 cb (EV_A_ EV_SIGNAL, wl);
3784 wl = wn;
3785 }
3786#endif
3787
3788#if EV_CHILD_ENABLE
3789 if (types & EV_CHILD)
3790 for (i = (EV_PID_HASHSIZE); i--; )
3791 for (wl = childs [i]; wl; )
3792 {
3793 wn = wl->next;
3794 cb (EV_A_ EV_CHILD, wl);
3795 wl = wn;
3796 }
3797#endif
3798/* EV_STAT 0x00001000 /* stat data changed */
3799/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3800}
3801#endif
3802
3025#if EV_MULTIPLICITY 3803#if EV_MULTIPLICITY
3026 #include "ev_wrap.h" 3804 #include "ev_wrap.h"
3027#endif 3805#endif
3028 3806
3029#ifdef __cplusplus 3807#ifdef __cplusplus

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