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Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC vs.
Revision 1.350 by root, Sat Oct 16 00:59:56 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
74# endif 98# endif
75 99
100# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
89# endif
90# endif 107# endif
91 108
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
95# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
98# endif 116# endif
99 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
106# endif 125# endif
107 126
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
111# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
114# endif 134# endif
115 135
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
122# endif 143# endif
123 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
160# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 194# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
164# endif 197# endif
198# undef EV_AVOID_STDIO
165#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
166 208
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
238
239#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else
243# define EV_USE_CLOCK_SYSCALL 0
244# endif
245#endif
168 246
169#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 250# else
173# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
174# endif 252# endif
175#endif 253#endif
176 254
177#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 257#endif
180 258
181#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 262# else
185# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
186# endif 264# endif
187#endif 265#endif
188 266
189#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 269#endif
192 270
193#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
194# ifdef _WIN32 272# ifdef _WIN32
195# define EV_USE_POLL 0 273# define EV_USE_POLL 0
196# else 274# else
197# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 276# endif
199#endif 277#endif
200 278
201#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 282# else
205# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
206# endif 284# endif
207#endif 285#endif
208 286
… …
214# define EV_USE_PORT 0 292# define EV_USE_PORT 0
215#endif 293#endif
216 294
217#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 298# else
221# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
222# endif 300# endif
223#endif 301#endif
224 302
225#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 305#endif
232 306
233#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 309#endif
240 310
241#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 314# else
245# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
316# endif
317#endif
318
319#ifndef EV_USE_SIGNALFD
320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
321# define EV_USE_SIGNALFD EV_FEATURE_OS
322# else
323# define EV_USE_SIGNALFD 0
246# endif 324# endif
247#endif 325#endif
248 326
249#if 0 /* debugging */ 327#if 0 /* debugging */
250# define EV_VERIFY 3 328# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
253#endif 331#endif
254 332
255#ifndef EV_VERIFY 333#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 335#endif
258 336
259#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 339#endif
262 340
263#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif
344
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h>
349# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1
353# else
354# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0
356# endif
265#endif 357#endif
266 358
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 359/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
268 366
269#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
272#endif 370#endif
… …
287# endif 385# endif
288#endif 386#endif
289 387
290#if EV_USE_INOTIFY 388#if EV_USE_INOTIFY
291# include <sys/utsname.h> 389# include <sys/utsname.h>
390# include <sys/statfs.h>
292# include <sys/inotify.h> 391# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 393# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
… …
302#endif 401#endif
303 402
304#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
305/* 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 */
306# 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
307# ifdef __cplusplus 416# ifdef __cplusplus
308extern "C" { 417extern "C" {
309# endif 418# endif
310int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
311# ifdef __cplusplus 420# ifdef __cplusplus
312} 421}
313# endif 422# endif
314#endif 423#endif
315 424
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
316/**/ 453/**/
317 454
318#if EV_VERIFY >= 3 455#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 456# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 457#else
321# define EV_FREQUENT_CHECK do { } while (0) 458# define EV_FREQUENT_CHECK do { } while (0)
322#endif 459#endif
323 460
324/* 461/*
… …
331 */ 468 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 470
334#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) */
335#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) */
336/*#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)
337 476
338#if __GNUC__ >= 4 477#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 478# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 479# define noinline __attribute__ ((noinline))
341#else 480#else
… …
348 487
349#define expect_false(expr) expect ((expr) != 0, 0) 488#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 489#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 490#define inline_size static inline
352 491
353#if EV_MINIMAL 492#if EV_FEATURE_CODE
493# define inline_speed static inline
494#else
354# 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)
355#else 502#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif
361 505
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 506#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 507#define EMPTY2(a,b) /* used to suppress some warnings */
364 508
365typedef ev_watcher *W; 509typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 511typedef ev_watcher_time *WT;
368 512
369#define ev_active(w) ((W)(w))->active 513#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 514#define ev_at(w) ((WT)(w))->at
371 515
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
372#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static 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)
376#endif 534#endif
377 535
378#ifdef _WIN32 536#ifdef _WIN32
379# include "ev_win32.c" 537# include "ev_win32.c"
380#endif 538#endif
381 539
382/*****************************************************************************/ 540/*****************************************************************************/
383 541
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
384static void (*syserr_cb)(const char *msg); 550static void (*syserr_cb)(const char *msg);
385 551
386void 552void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 553ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 554{
389 syserr_cb = cb; 555 syserr_cb = cb;
390} 556}
391 557
392static void noinline 558static void noinline
393syserr (const char *msg) 559ev_syserr (const char *msg)
394{ 560{
395 if (!msg) 561 if (!msg)
396 msg = "(libev) system error"; 562 msg = "(libev) system error";
397 563
398 if (syserr_cb) 564 if (syserr_cb)
399 syserr_cb (msg); 565 syserr_cb (msg);
400 else 566 else
401 { 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
402 perror (msg); 576 perror (msg);
577#endif
403 abort (); 578 abort ();
404 } 579 }
405} 580}
406 581
407static void * 582static void *
408ev_realloc_emul (void *ptr, long size) 583ev_realloc_emul (void *ptr, long size)
409{ 584{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
410 /* some systems, notably openbsd and darwin, fail to properly 588 /* some systems, notably openbsd and darwin, fail to properly
411 * 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
412 * the single unix specification, so work around them here. 590 * the single unix specification, so work around them here.
413 */ 591 */
414 592
415 if (size) 593 if (size)
416 return realloc (ptr, size); 594 return realloc (ptr, size);
417 595
418 free (ptr); 596 free (ptr);
419 return 0; 597 return 0;
598#endif
420} 599}
421 600
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 602
424void 603void
… …
432{ 611{
433 ptr = alloc (ptr, size); 612 ptr = alloc (ptr, size);
434 613
435 if (!ptr && size) 614 if (!ptr && size)
436 { 615 {
616#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n");
618#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
620#endif
438 abort (); 621 abort ();
439 } 622 }
440 623
441 return ptr; 624 return ptr;
442} 625}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 627#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 628#define ev_free(ptr) ev_realloc ((ptr), 0)
446 629
447/*****************************************************************************/ 630/*****************************************************************************/
448 631
632/* set in reify when reification needed */
633#define EV_ANFD_REIFY 1
634
635/* file descriptor info structure */
449typedef struct 636typedef struct
450{ 637{
451 WL head; 638 WL head;
452 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 */
453 unsigned char reify; 642 unsigned char unused;
643#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif
454#if EV_SELECT_IS_WINSOCKET 646#if EV_SELECT_IS_WINSOCKET
455 SOCKET handle; 647 SOCKET handle;
456#endif 648#endif
457} ANFD; 649} ANFD;
458 650
651/* stores the pending event set for a given watcher */
459typedef struct 652typedef struct
460{ 653{
461 W w; 654 W w;
462 int events; 655 int events; /* the pending event set for the given watcher */
463} ANPENDING; 656} ANPENDING;
464 657
465#if EV_USE_INOTIFY 658#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 659/* hash table entry per inotify-id */
467typedef struct 660typedef struct
… …
470} ANFS; 663} ANFS;
471#endif 664#endif
472 665
473/* Heap Entry */ 666/* Heap Entry */
474#if EV_HEAP_CACHE_AT 667#if EV_HEAP_CACHE_AT
668 /* a heap element */
475 typedef struct { 669 typedef struct {
476 ev_tstamp at; 670 ev_tstamp at;
477 WT w; 671 WT w;
478 } ANHE; 672 } ANHE;
479 673
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 674 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 675 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #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 */
483#else 677#else
678 /* a heap element */
484 typedef WT ANHE; 679 typedef WT ANHE;
485 680
486 #define ANHE_w(he) (he) 681 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 682 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 683 #define ANHE_at_cache(he)
… …
512 707
513 static int ev_default_loop_ptr; 708 static int ev_default_loop_ptr;
514 709
515#endif 710#endif
516 711
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
517/*****************************************************************************/ 724/*****************************************************************************/
518 725
726#ifndef EV_HAVE_EV_TIME
519ev_tstamp 727ev_tstamp
520ev_time (void) 728ev_time (void)
521{ 729{
522#if EV_USE_REALTIME 730#if EV_USE_REALTIME
731 if (expect_true (have_realtime))
732 {
523 struct timespec ts; 733 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 734 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 735 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 736 }
737#endif
738
527 struct timeval tv; 739 struct timeval tv;
528 gettimeofday (&tv, 0); 740 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 741 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 742}
743#endif
532 744
533ev_tstamp inline_size 745inline_size ev_tstamp
534get_clock (void) 746get_clock (void)
535{ 747{
536#if EV_USE_MONOTONIC 748#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 749 if (expect_true (have_monotonic))
538 { 750 {
… …
559 if (delay > 0.) 771 if (delay > 0.)
560 { 772 {
561#if EV_USE_NANOSLEEP 773#if EV_USE_NANOSLEEP
562 struct timespec ts; 774 struct timespec ts;
563 775
564 ts.tv_sec = (time_t)delay; 776 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 777 nanosleep (&ts, 0);
568#elif defined(_WIN32) 778#elif defined(_WIN32)
569 Sleep ((unsigned long)(delay * 1e3)); 779 Sleep ((unsigned long)(delay * 1e3));
570#else 780#else
571 struct timeval tv; 781 struct timeval tv;
572 782
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 784 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 785 /* by older ones */
786 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 787 select (0, 0, 0, 0, &tv);
580#endif 788#endif
581 } 789 }
582} 790}
583 791
584/*****************************************************************************/ 792/*****************************************************************************/
585 793
586#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 */
587 795
588int 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
589array_nextsize (int elem, int cur, int cnt) 799array_nextsize (int elem, int cur, int cnt)
590{ 800{
591 int ncur = cur + 1; 801 int ncur = cur + 1;
592 802
593 do 803 do
… …
610array_realloc (int elem, void *base, int *cur, int cnt) 820array_realloc (int elem, void *base, int *cur, int cnt)
611{ 821{
612 *cur = array_nextsize (elem, *cur, cnt); 822 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 823 return ev_realloc (base, elem * *cur);
614} 824}
825
826#define array_init_zero(base,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 828
616#define array_needsize(type,base,cur,cnt,init) \ 829#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 830 if (expect_false ((cnt) > (cur))) \
618 { \ 831 { \
619 int ocur_ = (cur); \ 832 int ocur_ = (cur); \
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 844 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 845 }
633#endif 846#endif
634 847
635#define array_free(stem, idx) \ 848#define array_free(stem, idx) \
636 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
637 850
638/*****************************************************************************/ 851/*****************************************************************************/
852
853/* dummy callback for pending events */
854static void noinline
855pendingcb (EV_P_ ev_prepare *w, int revents)
856{
857}
639 858
640void noinline 859void noinline
641ev_feed_event (EV_P_ void *w, int revents) 860ev_feed_event (EV_P_ void *w, int revents)
642{ 861{
643 W w_ = (W)w; 862 W w_ = (W)w;
… …
652 pendings [pri][w_->pending - 1].w = w_; 871 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 872 pendings [pri][w_->pending - 1].events = revents;
654 } 873 }
655} 874}
656 875
657void 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
658queue_events (EV_P_ W *events, int eventcnt, int type) 892queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 893{
660 int i; 894 int i;
661 895
662 for (i = 0; i < eventcnt; ++i) 896 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 897 ev_feed_event (EV_A_ events [i], type);
664} 898}
665 899
666/*****************************************************************************/ 900/*****************************************************************************/
667 901
668void inline_size 902inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 903fd_event_nocheck (EV_P_ int fd, int revents)
683{ 904{
684 ANFD *anfd = anfds + fd; 905 ANFD *anfd = anfds + fd;
685 ev_io *w; 906 ev_io *w;
686 907
687 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)
… …
691 if (ev) 912 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 913 ev_feed_event (EV_A_ (W)w, ev);
693 } 914 }
694} 915}
695 916
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
696void 928void
697ev_feed_fd_event (EV_P_ int fd, int revents) 929ev_feed_fd_event (EV_P_ int fd, int revents)
698{ 930{
699 if (fd >= 0 && fd < anfdmax) 931 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 932 fd_event_nocheck (EV_A_ fd, revents);
701} 933}
702 934
703void inline_size 935/* make sure the external fd watch events are in-sync */
936/* with the kernel/libev internal state */
937inline_size void
704fd_reify (EV_P) 938fd_reify (EV_P)
705{ 939{
706 int i; 940 int i;
707 941
708 for (i = 0; i < fdchangecnt; ++i) 942 for (i = 0; i < fdchangecnt; ++i)
709 { 943 {
710 int fd = fdchanges [i]; 944 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 945 ANFD *anfd = anfds + fd;
712 ev_io *w; 946 ev_io *w;
713 947
714 unsigned char events = 0; 948 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify;
715 950
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 951 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 952
719#if EV_SELECT_IS_WINSOCKET 953#if EV_SELECT_IS_WINSOCKET
720 if (events) 954 if (o_reify & EV__IOFDSET)
721 { 955 {
722 unsigned long arg; 956 unsigned long arg;
723 #ifdef EV_FD_TO_WIN32_HANDLE
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
725 #else
726 anfd->handle = _get_osfhandle (fd);
727 #endif
728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
729 } 959 }
730#endif 960#endif
731 961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
732 { 963 {
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events; 964 anfd->events = 0;
738 965
739 if (o_events != events || o_reify & EV_IOFDSET) 966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
967 anfd->events |= (unsigned char)w->events;
968
969 if (o_events !=anfd-> events)
970 o_reify = EV__IOFDSET; /* actually |= */
971 }
972
973 if (o_reify & EV__IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events); 974 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 975 }
743 976
744 fdchangecnt = 0; 977 fdchangecnt = 0;
745} 978}
746 979
747void inline_size 980/* something about the given fd changed */
981inline_size void
748fd_change (EV_P_ int fd, int flags) 982fd_change (EV_P_ int fd, int flags)
749{ 983{
750 unsigned char reify = anfds [fd].reify; 984 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 985 anfds [fd].reify |= flags;
752 986
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 990 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 991 fdchanges [fdchangecnt - 1] = fd;
758 } 992 }
759} 993}
760 994
761void inline_speed 995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void
762fd_kill (EV_P_ int fd) 997fd_kill (EV_P_ int fd)
763{ 998{
764 ev_io *w; 999 ev_io *w;
765 1000
766 while ((w = (ev_io *)anfds [fd].head)) 1001 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 1003 ev_io_stop (EV_A_ w);
769 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
770 } 1005 }
771} 1006}
772 1007
773int inline_size 1008/* check whether the given fd is actually valid, for error recovery */
1009inline_size int
774fd_valid (int fd) 1010fd_valid (int fd)
775{ 1011{
776#ifdef _WIN32 1012#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 1014#else
779 return fcntl (fd, F_GETFD) != -1; 1015 return fcntl (fd, F_GETFD) != -1;
780#endif 1016#endif
781} 1017}
782 1018
… …
800 1036
801 for (fd = anfdmax; fd--; ) 1037 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 1038 if (anfds [fd].events)
803 { 1039 {
804 fd_kill (EV_A_ fd); 1040 fd_kill (EV_A_ fd);
805 return; 1041 break;
806 } 1042 }
807} 1043}
808 1044
809/* usually called after fork if backend needs to re-arm all fds from scratch */ 1045/* usually called after fork if backend needs to re-arm all fds from scratch */
810static void noinline 1046static void noinline
… …
814 1050
815 for (fd = 0; fd < anfdmax; ++fd) 1051 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 1052 if (anfds [fd].events)
817 { 1053 {
818 anfds [fd].events = 0; 1054 anfds [fd].events = 0;
1055 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1056 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 1057 }
821} 1058}
822 1059
1060/* used to prepare libev internal fd's */
1061/* this is not fork-safe */
1062inline_speed void
1063fd_intern (int fd)
1064{
1065#ifdef _WIN32
1066 unsigned long arg = 1;
1067 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1068#else
1069 fcntl (fd, F_SETFD, FD_CLOEXEC);
1070 fcntl (fd, F_SETFL, O_NONBLOCK);
1071#endif
1072}
1073
823/*****************************************************************************/ 1074/*****************************************************************************/
824 1075
825/* 1076/*
826 * the heap functions want a real array index. array index 0 uis guaranteed to not 1077 * the heap functions want a real array index. array index 0 is guaranteed to not
827 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1078 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
828 * the branching factor of the d-tree. 1079 * the branching factor of the d-tree.
829 */ 1080 */
830 1081
831/* 1082/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1091#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1092#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 1093#define UPHEAP_DONE(p,k) ((p) == (k))
843 1094
844/* away from the root */ 1095/* away from the root */
845void inline_speed 1096inline_speed void
846downheap (ANHE *heap, int N, int k) 1097downheap (ANHE *heap, int N, int k)
847{ 1098{
848 ANHE he = heap [k]; 1099 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 1100 ANHE *E = heap + N + HEAP0;
850 1101
… …
890#define HEAP0 1 1141#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 1142#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 1143#define UPHEAP_DONE(p,k) (!(p))
893 1144
894/* away from the root */ 1145/* away from the root */
895void inline_speed 1146inline_speed void
896downheap (ANHE *heap, int N, int k) 1147downheap (ANHE *heap, int N, int k)
897{ 1148{
898 ANHE he = heap [k]; 1149 ANHE he = heap [k];
899 1150
900 for (;;) 1151 for (;;)
901 { 1152 {
902 int c = k << 1; 1153 int c = k << 1;
903 1154
904 if (c > N + HEAP0 - 1) 1155 if (c >= N + HEAP0)
905 break; 1156 break;
906 1157
907 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1158 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0; 1159 ? 1 : 0;
909 1160
… …
920 ev_active (ANHE_w (he)) = k; 1171 ev_active (ANHE_w (he)) = k;
921} 1172}
922#endif 1173#endif
923 1174
924/* towards the root */ 1175/* towards the root */
925void inline_speed 1176inline_speed void
926upheap (ANHE *heap, int k) 1177upheap (ANHE *heap, int k)
927{ 1178{
928 ANHE he = heap [k]; 1179 ANHE he = heap [k];
929 1180
930 for (;;) 1181 for (;;)
… …
941 1192
942 heap [k] = he; 1193 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 1194 ev_active (ANHE_w (he)) = k;
944} 1195}
945 1196
946void inline_size 1197/* move an element suitably so it is in a correct place */
1198inline_size void
947adjustheap (ANHE *heap, int N, int k) 1199adjustheap (ANHE *heap, int N, int k)
948{ 1200{
949 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1201 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
950 upheap (heap, k); 1202 upheap (heap, k);
951 else 1203 else
952 downheap (heap, N, k); 1204 downheap (heap, N, k);
953} 1205}
954 1206
955/* rebuild the heap: this function is used only once and executed rarely */ 1207/* rebuild the heap: this function is used only once and executed rarely */
956void inline_size 1208inline_size void
957reheap (ANHE *heap, int N) 1209reheap (ANHE *heap, int N)
958{ 1210{
959 int i; 1211 int i;
960 1212
961 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1213 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
964 upheap (heap, i + HEAP0); 1216 upheap (heap, i + HEAP0);
965} 1217}
966 1218
967/*****************************************************************************/ 1219/*****************************************************************************/
968 1220
1221/* associate signal watchers to a signal signal */
969typedef struct 1222typedef struct
970{ 1223{
1224 EV_ATOMIC_T pending;
1225#if EV_MULTIPLICITY
1226 EV_P;
1227#endif
971 WL head; 1228 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 1229} ANSIG;
974 1230
975static ANSIG *signals; 1231static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 1232
992/*****************************************************************************/ 1233/*****************************************************************************/
993 1234
994void inline_speed 1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 1236
1006static void noinline 1237static void noinline
1007evpipe_init (EV_P) 1238evpipe_init (EV_P)
1008{ 1239{
1009 if (!ev_is_active (&pipeev)) 1240 if (!ev_is_active (&pipe_w))
1010 { 1241 {
1011#if EV_USE_EVENTFD 1242# if EV_USE_EVENTFD
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL)
1012 if ((evfd = eventfd (0, 0)) >= 0) 1245 evfd = eventfd (0, 0);
1246
1247 if (evfd >= 0)
1013 { 1248 {
1014 evpipe [0] = -1; 1249 evpipe [0] = -1;
1015 fd_intern (evfd); 1250 fd_intern (evfd); /* doing it twice doesn't hurt */
1016 ev_io_set (&pipeev, evfd, EV_READ); 1251 ev_io_set (&pipe_w, evfd, EV_READ);
1017 } 1252 }
1018 else 1253 else
1019#endif 1254# endif
1020 { 1255 {
1021 while (pipe (evpipe)) 1256 while (pipe (evpipe))
1022 syserr ("(libev) error creating signal/async pipe"); 1257 ev_syserr ("(libev) error creating signal/async pipe");
1023 1258
1024 fd_intern (evpipe [0]); 1259 fd_intern (evpipe [0]);
1025 fd_intern (evpipe [1]); 1260 fd_intern (evpipe [1]);
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 1261 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1027 } 1262 }
1028 1263
1029 ev_io_start (EV_A_ &pipeev); 1264 ev_io_start (EV_A_ &pipe_w);
1030 ev_unref (EV_A); /* watcher should not keep loop alive */ 1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 } 1266 }
1032} 1267}
1033 1268
1034void inline_size 1269inline_size void
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{ 1271{
1037 if (!*flag) 1272 if (!*flag)
1038 { 1273 {
1039 int old_errno = errno; /* save errno because write might clobber it */ 1274 int old_errno = errno; /* save errno because write might clobber it */
1275 char dummy;
1040 1276
1041 *flag = 1; 1277 *flag = 1;
1042 1278
1043#if EV_USE_EVENTFD 1279#if EV_USE_EVENTFD
1044 if (evfd >= 0) 1280 if (evfd >= 0)
… …
1046 uint64_t counter = 1; 1282 uint64_t counter = 1;
1047 write (evfd, &counter, sizeof (uint64_t)); 1283 write (evfd, &counter, sizeof (uint64_t));
1048 } 1284 }
1049 else 1285 else
1050#endif 1286#endif
1287 /* win32 people keep sending patches that change this write() to send() */
1288 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289 /* so when you think this write should be a send instead, please find out */
1290 /* where your send() is from - it's definitely not the microsoft send, and */
1291 /* tell me. thank you. */
1051 write (evpipe [1], &old_errno, 1); 1292 write (evpipe [1], &dummy, 1);
1052 1293
1053 errno = old_errno; 1294 errno = old_errno;
1054 } 1295 }
1055} 1296}
1056 1297
1298/* called whenever the libev signal pipe */
1299/* got some events (signal, async) */
1057static void 1300static void
1058pipecb (EV_P_ ev_io *iow, int revents) 1301pipecb (EV_P_ ev_io *iow, int revents)
1059{ 1302{
1303 int i;
1304
1060#if EV_USE_EVENTFD 1305#if EV_USE_EVENTFD
1061 if (evfd >= 0) 1306 if (evfd >= 0)
1062 { 1307 {
1063 uint64_t counter; 1308 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t)); 1309 read (evfd, &counter, sizeof (uint64_t));
1065 } 1310 }
1066 else 1311 else
1067#endif 1312#endif
1068 { 1313 {
1069 char dummy; 1314 char dummy;
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1070 read (evpipe [0], &dummy, 1); 1316 read (evpipe [0], &dummy, 1);
1071 } 1317 }
1072 1318
1073 if (gotsig && ev_is_default_loop (EV_A)) 1319 if (sig_pending)
1074 { 1320 {
1075 int signum; 1321 sig_pending = 0;
1076 gotsig = 0;
1077 1322
1078 for (signum = signalmax; signum--; ) 1323 for (i = EV_NSIG - 1; i--; )
1079 if (signals [signum].gotsig) 1324 if (expect_false (signals [i].pending))
1080 ev_feed_signal_event (EV_A_ signum + 1); 1325 ev_feed_signal_event (EV_A_ i + 1);
1081 } 1326 }
1082 1327
1083#if EV_ASYNC_ENABLE 1328#if EV_ASYNC_ENABLE
1084 if (gotasync) 1329 if (async_pending)
1085 { 1330 {
1086 int i; 1331 async_pending = 0;
1087 gotasync = 0;
1088 1332
1089 for (i = asynccnt; i--; ) 1333 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 1334 if (asyncs [i]->sent)
1091 { 1335 {
1092 asyncs [i]->sent = 0; 1336 asyncs [i]->sent = 0;
… …
1100 1344
1101static void 1345static void
1102ev_sighandler (int signum) 1346ev_sighandler (int signum)
1103{ 1347{
1104#if EV_MULTIPLICITY 1348#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct; 1349 EV_P = signals [signum - 1].loop;
1106#endif 1350#endif
1107 1351
1108#if _WIN32 1352#ifdef _WIN32
1109 signal (signum, ev_sighandler); 1353 signal (signum, ev_sighandler);
1110#endif 1354#endif
1111 1355
1112 signals [signum - 1].gotsig = 1; 1356 signals [signum - 1].pending = 1;
1113 evpipe_write (EV_A_ &gotsig); 1357 evpipe_write (EV_A_ &sig_pending);
1114} 1358}
1115 1359
1116void noinline 1360void noinline
1117ev_feed_signal_event (EV_P_ int signum) 1361ev_feed_signal_event (EV_P_ int signum)
1118{ 1362{
1119 WL w; 1363 WL w;
1120 1364
1365 if (expect_false (signum <= 0 || signum > EV_NSIG))
1366 return;
1367
1368 --signum;
1369
1121#if EV_MULTIPLICITY 1370#if EV_MULTIPLICITY
1122 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1371 /* it is permissible to try to feed a signal to the wrong loop */
1123#endif 1372 /* or, likely more useful, feeding a signal nobody is waiting for */
1124 1373
1125 --signum; 1374 if (expect_false (signals [signum].loop != EV_A))
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 1375 return;
1376#endif
1129 1377
1130 signals [signum].gotsig = 0; 1378 signals [signum].pending = 0;
1131 1379
1132 for (w = signals [signum].head; w; w = w->next) 1380 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 1382}
1135 1383
1384#if EV_USE_SIGNALFD
1385static void
1386sigfdcb (EV_P_ ev_io *iow, int revents)
1387{
1388 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1389
1390 for (;;)
1391 {
1392 ssize_t res = read (sigfd, si, sizeof (si));
1393
1394 /* not ISO-C, as res might be -1, but works with SuS */
1395 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1396 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1397
1398 if (res < (ssize_t)sizeof (si))
1399 break;
1400 }
1401}
1402#endif
1403
1404#endif
1405
1136/*****************************************************************************/ 1406/*****************************************************************************/
1137 1407
1408#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 1409static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 1410
1142static ev_signal childev; 1411static ev_signal childev;
1143 1412
1144#ifndef WIFCONTINUED 1413#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 1414# define WIFCONTINUED(status) 0
1146#endif 1415#endif
1147 1416
1148void inline_speed 1417/* handle a single child status event */
1418inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 1419child_reap (EV_P_ int chain, int pid, int status)
1150{ 1420{
1151 ev_child *w; 1421 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1422 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 1423
1154 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1424 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1155 { 1425 {
1156 if ((w->pid == pid || !w->pid) 1426 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 1427 && (!traced || (w->flags & 1)))
1158 { 1428 {
1159 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1429 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1166 1436
1167#ifndef WCONTINUED 1437#ifndef WCONTINUED
1168# define WCONTINUED 0 1438# define WCONTINUED 0
1169#endif 1439#endif
1170 1440
1441/* called on sigchld etc., calls waitpid */
1171static void 1442static void
1172childcb (EV_P_ ev_signal *sw, int revents) 1443childcb (EV_P_ ev_signal *sw, int revents)
1173{ 1444{
1174 int pid, status; 1445 int pid, status;
1175 1446
… …
1183 /* make sure we are called again until all children have been reaped */ 1454 /* make sure we are called again until all children have been reaped */
1184 /* we need to do it this way so that the callback gets called before we continue */ 1455 /* we need to do it this way so that the callback gets called before we continue */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1456 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 1457
1187 child_reap (EV_A_ pid, pid, status); 1458 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 1459 if ((EV_PID_HASHSIZE) > 1)
1189 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1460 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1190} 1461}
1191 1462
1192#endif 1463#endif
1193 1464
… …
1256 /* kqueue is borked on everything but netbsd apparently */ 1527 /* kqueue is borked on everything but netbsd apparently */
1257 /* it usually doesn't work correctly on anything but sockets and pipes */ 1528 /* it usually doesn't work correctly on anything but sockets and pipes */
1258 flags &= ~EVBACKEND_KQUEUE; 1529 flags &= ~EVBACKEND_KQUEUE;
1259#endif 1530#endif
1260#ifdef __APPLE__ 1531#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 1532 /* only select works correctly on that "unix-certified" platform */
1262 flags &= ~EVBACKEND_POLL; 1533 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1534 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1535#endif
1536#ifdef __FreeBSD__
1537 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1263#endif 1538#endif
1264 1539
1265 return flags; 1540 return flags;
1266} 1541}
1267 1542
… …
1281ev_backend (EV_P) 1556ev_backend (EV_P)
1282{ 1557{
1283 return backend; 1558 return backend;
1284} 1559}
1285 1560
1561#if EV_FEATURE_API
1286unsigned int 1562unsigned int
1287ev_loop_count (EV_P) 1563ev_iteration (EV_P)
1288{ 1564{
1289 return loop_count; 1565 return loop_count;
1290} 1566}
1291 1567
1568unsigned int
1569ev_depth (EV_P)
1570{
1571 return loop_depth;
1572}
1573
1292void 1574void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1576{
1295 io_blocktime = interval; 1577 io_blocktime = interval;
1296} 1578}
… …
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1300{ 1582{
1301 timeout_blocktime = interval; 1583 timeout_blocktime = interval;
1302} 1584}
1303 1585
1586void
1587ev_set_userdata (EV_P_ void *data)
1588{
1589 userdata = data;
1590}
1591
1592void *
1593ev_userdata (EV_P)
1594{
1595 return userdata;
1596}
1597
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1599{
1600 invoke_cb = invoke_pending_cb;
1601}
1602
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1604{
1605 release_cb = release;
1606 acquire_cb = acquire;
1607}
1608#endif
1609
1610/* initialise a loop structure, must be zero-initialised */
1304static void noinline 1611static void noinline
1305loop_init (EV_P_ unsigned int flags) 1612loop_init (EV_P_ unsigned int flags)
1306{ 1613{
1307 if (!backend) 1614 if (!backend)
1308 { 1615 {
1616#if EV_USE_REALTIME
1617 if (!have_realtime)
1618 {
1619 struct timespec ts;
1620
1621 if (!clock_gettime (CLOCK_REALTIME, &ts))
1622 have_realtime = 1;
1623 }
1624#endif
1625
1309#if EV_USE_MONOTONIC 1626#if EV_USE_MONOTONIC
1627 if (!have_monotonic)
1310 { 1628 {
1311 struct timespec ts; 1629 struct timespec ts;
1630
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1631 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 1632 have_monotonic = 1;
1314 } 1633 }
1315#endif 1634#endif
1635
1636 /* pid check not overridable via env */
1637#ifndef _WIN32
1638 if (flags & EVFLAG_FORKCHECK)
1639 curpid = getpid ();
1640#endif
1641
1642 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS"));
1316 1646
1317 ev_rt_now = ev_time (); 1647 ev_rt_now = ev_time ();
1318 mn_now = get_clock (); 1648 mn_now = get_clock ();
1319 now_floor = mn_now; 1649 now_floor = mn_now;
1320 rtmn_diff = ev_rt_now - mn_now; 1650 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending;
1653#endif
1321 1654
1322 io_blocktime = 0.; 1655 io_blocktime = 0.;
1323 timeout_blocktime = 0.; 1656 timeout_blocktime = 0.;
1324 backend = 0; 1657 backend = 0;
1325 backend_fd = -1; 1658 backend_fd = -1;
1326 gotasync = 0; 1659 sig_pending = 0;
1660#if EV_ASYNC_ENABLE
1661 async_pending = 0;
1662#endif
1327#if EV_USE_INOTIFY 1663#if EV_USE_INOTIFY
1328 fs_fd = -2; 1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1329#endif 1665#endif
1330 1666#if EV_USE_SIGNALFD
1331 /* pid check not overridable via env */ 1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1332#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK)
1334 curpid = getpid ();
1335#endif 1668#endif
1336
1337 if (!(flags & EVFLAG_NOENV)
1338 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS"));
1341 1669
1342 if (!(flags & 0x0000ffffU)) 1670 if (!(flags & 0x0000ffffU))
1343 flags |= ev_recommended_backends (); 1671 flags |= ev_recommended_backends ();
1344 1672
1345#if EV_USE_PORT 1673#if EV_USE_PORT
… …
1356#endif 1684#endif
1357#if EV_USE_SELECT 1685#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1686 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 1687#endif
1360 1688
1689 ev_prepare_init (&pending_w, pendingcb);
1690
1691#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 1692 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 1693 ev_set_priority (&pipe_w, EV_MAXPRI);
1694#endif
1363 } 1695 }
1364} 1696}
1365 1697
1698/* free up a loop structure */
1366static void noinline 1699static void noinline
1367loop_destroy (EV_P) 1700loop_destroy (EV_P)
1368{ 1701{
1369 int i; 1702 int i;
1370 1703
1371 if (ev_is_active (&pipeev)) 1704 if (ev_is_active (&pipe_w))
1372 { 1705 {
1373 ev_ref (EV_A); /* signal watcher */ 1706 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 1707 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 1708
1376#if EV_USE_EVENTFD 1709#if EV_USE_EVENTFD
1377 if (evfd >= 0) 1710 if (evfd >= 0)
1378 close (evfd); 1711 close (evfd);
1379#endif 1712#endif
1380 1713
1381 if (evpipe [0] >= 0) 1714 if (evpipe [0] >= 0)
1382 { 1715 {
1383 close (evpipe [0]); 1716 EV_WIN32_CLOSE_FD (evpipe [0]);
1384 close (evpipe [1]); 1717 EV_WIN32_CLOSE_FD (evpipe [1]);
1385 } 1718 }
1386 } 1719 }
1720
1721#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w))
1723 close (sigfd);
1724#endif
1387 1725
1388#if EV_USE_INOTIFY 1726#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 1727 if (fs_fd >= 0)
1390 close (fs_fd); 1728 close (fs_fd);
1391#endif 1729#endif
… …
1415#if EV_IDLE_ENABLE 1753#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 1754 array_free (idle, [i]);
1417#endif 1755#endif
1418 } 1756 }
1419 1757
1420 ev_free (anfds); anfdmax = 0; 1758 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 1759
1422 /* have to use the microsoft-never-gets-it-right macro */ 1760 /* have to use the microsoft-never-gets-it-right macro */
1761 array_free (rfeed, EMPTY);
1423 array_free (fdchange, EMPTY); 1762 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 1763 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 1764#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 1765 array_free (periodic, EMPTY);
1427#endif 1766#endif
… …
1436 1775
1437 backend = 0; 1776 backend = 0;
1438} 1777}
1439 1778
1440#if EV_USE_INOTIFY 1779#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 1780inline_size void infy_fork (EV_P);
1442#endif 1781#endif
1443 1782
1444void inline_size 1783inline_size void
1445loop_fork (EV_P) 1784loop_fork (EV_P)
1446{ 1785{
1447#if EV_USE_PORT 1786#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1787 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 1788#endif
… …
1455#endif 1794#endif
1456#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 1796 infy_fork (EV_A);
1458#endif 1797#endif
1459 1798
1460 if (ev_is_active (&pipeev)) 1799 if (ev_is_active (&pipe_w))
1461 { 1800 {
1462 /* this "locks" the handlers against writing to the pipe */ 1801 /* this "locks" the handlers against writing to the pipe */
1463 /* while we modify the fd vars */ 1802 /* while we modify the fd vars */
1464 gotsig = 1; 1803 sig_pending = 1;
1465#if EV_ASYNC_ENABLE 1804#if EV_ASYNC_ENABLE
1466 gotasync = 1; 1805 async_pending = 1;
1467#endif 1806#endif
1468 1807
1469 ev_ref (EV_A); 1808 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 1809 ev_io_stop (EV_A_ &pipe_w);
1471 1810
1472#if EV_USE_EVENTFD 1811#if EV_USE_EVENTFD
1473 if (evfd >= 0) 1812 if (evfd >= 0)
1474 close (evfd); 1813 close (evfd);
1475#endif 1814#endif
1476 1815
1477 if (evpipe [0] >= 0) 1816 if (evpipe [0] >= 0)
1478 { 1817 {
1479 close (evpipe [0]); 1818 EV_WIN32_CLOSE_FD (evpipe [0]);
1480 close (evpipe [1]); 1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1481 } 1820 }
1482 1821
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1483 evpipe_init (EV_A); 1823 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 1824 /* now iterate over everything, in case we missed something */
1485 pipecb (EV_A_ &pipeev, EV_READ); 1825 pipecb (EV_A_ &pipe_w, EV_READ);
1826#endif
1486 } 1827 }
1487 1828
1488 postfork = 0; 1829 postfork = 0;
1489} 1830}
1490 1831
1491#if EV_MULTIPLICITY 1832#if EV_MULTIPLICITY
1492 1833
1493struct ev_loop * 1834struct ev_loop *
1494ev_loop_new (unsigned int flags) 1835ev_loop_new (unsigned int flags)
1495{ 1836{
1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1497 1838
1498 memset (loop, 0, sizeof (struct ev_loop)); 1839 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 1840 loop_init (EV_A_ flags);
1501 1841
1502 if (ev_backend (EV_A)) 1842 if (ev_backend (EV_A))
1503 return loop; 1843 return EV_A;
1504 1844
1505 return 0; 1845 return 0;
1506} 1846}
1507 1847
1508void 1848void
… …
1515void 1855void
1516ev_loop_fork (EV_P) 1856ev_loop_fork (EV_P)
1517{ 1857{
1518 postfork = 1; /* must be in line with ev_default_fork */ 1858 postfork = 1; /* must be in line with ev_default_fork */
1519} 1859}
1860#endif /* multiplicity */
1520 1861
1521#if EV_VERIFY 1862#if EV_VERIFY
1522static void noinline 1863static void noinline
1523verify_watcher (EV_P_ W w) 1864verify_watcher (EV_P_ W w)
1524{ 1865{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 1867
1527 if (w->pending) 1868 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529} 1870}
1530 1871
1531static void noinline 1872static void noinline
1532verify_heap (EV_P_ ANHE *heap, int N) 1873verify_heap (EV_P_ ANHE *heap, int N)
1533{ 1874{
1534 int i; 1875 int i;
1535 1876
1536 for (i = HEAP0; i < N + HEAP0; ++i) 1877 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 1878 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1879 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1880 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1881 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541 1882
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 1884 }
1544} 1885}
1545 1886
1546static void noinline 1887static void noinline
1547array_verify (EV_P_ W *ws, int cnt) 1888array_verify (EV_P_ W *ws, int cnt)
1548{ 1889{
1549 while (cnt--) 1890 while (cnt--)
1550 { 1891 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 1893 verify_watcher (EV_A_ ws [cnt]);
1553 } 1894 }
1554} 1895}
1555#endif 1896#endif
1556 1897
1898#if EV_FEATURE_API
1557void 1899void
1558ev_loop_verify (EV_P) 1900ev_verify (EV_P)
1559{ 1901{
1560#if EV_VERIFY 1902#if EV_VERIFY
1561 int i; 1903 int i;
1562 WL w; 1904 WL w;
1563 1905
1564 assert (activecnt >= -1); 1906 assert (activecnt >= -1);
1565 1907
1566 assert (fdchangemax >= fdchangecnt); 1908 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 1909 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 1911
1570 assert (anfdmax >= 0); 1912 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 1913 for (i = 0; i < anfdmax; ++i)
1572 for (w = anfds [i].head; w; w = w->next) 1914 for (w = anfds [i].head; w; w = w->next)
1573 { 1915 {
1574 verify_watcher (EV_A_ (W)w); 1916 verify_watcher (EV_A_ (W)w);
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 } 1919 }
1578 1920
1579 assert (timermax >= timercnt); 1921 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 1922 verify_heap (EV_A_ timers, timercnt);
1581 1923
… …
1602#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 1945 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 1946 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 1947#endif
1606 1948
1949#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 1950 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 1951 array_verify (EV_A_ (W *)prepares, preparecnt);
1952#endif
1609 1953
1954#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 1955 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 1956 array_verify (EV_A_ (W *)checks, checkcnt);
1957#endif
1612 1958
1613# if 0 1959# if 0
1960#if EV_CHILD_ENABLE
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1961 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1962 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1963#endif
1616# endif 1964# endif
1617#endif 1965#endif
1618} 1966}
1619 1967#endif
1620#endif /* multiplicity */
1621 1968
1622#if EV_MULTIPLICITY 1969#if EV_MULTIPLICITY
1623struct ev_loop * 1970struct ev_loop *
1624ev_default_loop_init (unsigned int flags) 1971ev_default_loop_init (unsigned int flags)
1625#else 1972#else
… …
1628#endif 1975#endif
1629{ 1976{
1630 if (!ev_default_loop_ptr) 1977 if (!ev_default_loop_ptr)
1631 { 1978 {
1632#if EV_MULTIPLICITY 1979#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1980 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 1981#else
1635 ev_default_loop_ptr = 1; 1982 ev_default_loop_ptr = 1;
1636#endif 1983#endif
1637 1984
1638 loop_init (EV_A_ flags); 1985 loop_init (EV_A_ flags);
1639 1986
1640 if (ev_backend (EV_A)) 1987 if (ev_backend (EV_A))
1641 { 1988 {
1642#ifndef _WIN32 1989#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 1990 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 1991 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 1992 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1993 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 1994#endif
… …
1655 2002
1656void 2003void
1657ev_default_destroy (void) 2004ev_default_destroy (void)
1658{ 2005{
1659#if EV_MULTIPLICITY 2006#if EV_MULTIPLICITY
1660 struct ev_loop *loop = ev_default_loop_ptr; 2007 EV_P = ev_default_loop_ptr;
1661#endif 2008#endif
1662 2009
1663#ifndef _WIN32 2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
1664 ev_ref (EV_A); /* child watcher */ 2013 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev); 2014 ev_signal_stop (EV_A_ &childev);
1666#endif 2015#endif
1667 2016
1668 loop_destroy (EV_A); 2017 loop_destroy (EV_A);
… …
1670 2019
1671void 2020void
1672ev_default_fork (void) 2021ev_default_fork (void)
1673{ 2022{
1674#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr; 2024 EV_P = ev_default_loop_ptr;
1676#endif 2025#endif
1677 2026
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */ 2027 postfork = 1; /* must be in line with ev_loop_fork */
1680} 2028}
1681 2029
1682/*****************************************************************************/ 2030/*****************************************************************************/
1683 2031
1684void 2032void
1685ev_invoke (EV_P_ void *w, int revents) 2033ev_invoke (EV_P_ void *w, int revents)
1686{ 2034{
1687 EV_CB_INVOKE ((W)w, revents); 2035 EV_CB_INVOKE ((W)w, revents);
1688} 2036}
1689 2037
1690void inline_speed 2038unsigned int
1691call_pending (EV_P) 2039ev_pending_count (EV_P)
2040{
2041 int pri;
2042 unsigned int count = 0;
2043
2044 for (pri = NUMPRI; pri--; )
2045 count += pendingcnt [pri];
2046
2047 return count;
2048}
2049
2050void noinline
2051ev_invoke_pending (EV_P)
1692{ 2052{
1693 int pri; 2053 int pri;
1694 2054
1695 for (pri = NUMPRI; pri--; ) 2055 for (pri = NUMPRI; pri--; )
1696 while (pendingcnt [pri]) 2056 while (pendingcnt [pri])
1697 { 2057 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1699 2059
1700 if (expect_true (p->w))
1701 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
1703 2062
1704 p->w->pending = 0; 2063 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 2064 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 2065 EV_FREQUENT_CHECK;
1707 }
1708 } 2066 }
1709} 2067}
1710 2068
1711#if EV_IDLE_ENABLE 2069#if EV_IDLE_ENABLE
1712void inline_size 2070/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */
2072inline_size void
1713idle_reify (EV_P) 2073idle_reify (EV_P)
1714{ 2074{
1715 if (expect_false (idleall)) 2075 if (expect_false (idleall))
1716 { 2076 {
1717 int pri; 2077 int pri;
… …
1729 } 2089 }
1730 } 2090 }
1731} 2091}
1732#endif 2092#endif
1733 2093
1734void inline_size 2094/* make timers pending */
2095inline_size void
1735timers_reify (EV_P) 2096timers_reify (EV_P)
1736{ 2097{
1737 EV_FREQUENT_CHECK; 2098 EV_FREQUENT_CHECK;
1738 2099
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2100 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 2101 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2102 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 2103 {
2104 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2105
2106 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2107
2108 /* first reschedule or stop timer */
2109 if (w->repeat)
2110 {
1748 ev_at (w) += w->repeat; 2111 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 2112 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 2113 ev_at (w) = mn_now;
1751 2114
1752 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2115 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1753 2116
1754 ANHE_at_cache (timers [HEAP0]); 2117 ANHE_at_cache (timers [HEAP0]);
1755 downheap (timers, timercnt, HEAP0); 2118 downheap (timers, timercnt, HEAP0);
2119 }
2120 else
2121 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2122
2123 EV_FREQUENT_CHECK;
2124 feed_reverse (EV_A_ (W)w);
1756 } 2125 }
1757 else 2126 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 2127
1760 EV_FREQUENT_CHECK; 2128 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 2129 }
1763} 2130}
1764 2131
1765#if EV_PERIODIC_ENABLE 2132#if EV_PERIODIC_ENABLE
1766void inline_size 2133/* make periodics pending */
2134inline_size void
1767periodics_reify (EV_P) 2135periodics_reify (EV_P)
1768{ 2136{
1769 EV_FREQUENT_CHECK; 2137 EV_FREQUENT_CHECK;
1770 2138
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 2140 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2141 int feed_count = 0;
1774 2142
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2143 do
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 2144 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2148
2149 /* first reschedule or stop timer */
2150 if (w->reschedule_cb)
2151 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2152 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 2153
1782 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2154 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1783 2155
1784 ANHE_at_cache (periodics [HEAP0]); 2156 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0); 2157 downheap (periodics, periodiccnt, HEAP0);
2158 }
2159 else if (w->interval)
2160 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2162 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 {
2166 ev_at (w) += w->interval;
2167
2168 /* if interval is unreasonably low we might still have a time in the past */
2169 /* so correct this. this will make the periodic very inexact, but the user */
2170 /* has effectively asked to get triggered more often than possible */
2171 if (ev_at (w) < ev_rt_now)
2172 ev_at (w) = ev_rt_now;
2173 }
2174
2175 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0);
2177 }
2178 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2180
2181 EV_FREQUENT_CHECK;
2182 feed_reverse (EV_A_ (W)w);
1786 } 2183 }
1787 else if (w->interval) 2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 2185
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2186 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 2187 }
1812} 2188}
1813 2189
2190/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 2192static void noinline
1815periodics_reschedule (EV_P) 2193periodics_reschedule (EV_P)
1816{ 2194{
1817 int i; 2195 int i;
1818 2196
… …
1831 2209
1832 reheap (periodics, periodiccnt); 2210 reheap (periodics, periodiccnt);
1833} 2211}
1834#endif 2212#endif
1835 2213
1836void inline_speed 2214/* adjust all timers by a given offset */
2215static void noinline
2216timers_reschedule (EV_P_ ev_tstamp adjust)
2217{
2218 int i;
2219
2220 for (i = 0; i < timercnt; ++i)
2221 {
2222 ANHE *he = timers + i + HEAP0;
2223 ANHE_w (*he)->at += adjust;
2224 ANHE_at_cache (*he);
2225 }
2226}
2227
2228/* fetch new monotonic and realtime times from the kernel */
2229/* also detect if there was a timejump, and act accordingly */
2230inline_speed void
1837time_update (EV_P_ ev_tstamp max_block) 2231time_update (EV_P_ ev_tstamp max_block)
1838{ 2232{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 2233#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 2234 if (expect_true (have_monotonic))
1843 { 2235 {
2236 int i;
1844 ev_tstamp odiff = rtmn_diff; 2237 ev_tstamp odiff = rtmn_diff;
1845 2238
1846 mn_now = get_clock (); 2239 mn_now = get_clock ();
1847 2240
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2241 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1874 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 2268 mn_now = get_clock ();
1876 now_floor = mn_now; 2269 now_floor = mn_now;
1877 } 2270 }
1878 2271
2272 /* no timer adjustment, as the monotonic clock doesn't jump */
2273 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 2274# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 2275 periodics_reschedule (EV_A);
1881# endif 2276# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 2277 }
1885 else 2278 else
1886#endif 2279#endif
1887 { 2280 {
1888 ev_rt_now = ev_time (); 2281 ev_rt_now = ev_time ();
1889 2282
1890 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2283 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1891 { 2284 {
2285 /* adjust timers. this is easy, as the offset is the same for all of them */
2286 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1892#if EV_PERIODIC_ENABLE 2287#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 2288 periodics_reschedule (EV_A);
1894#endif 2289#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 2290 }
1903 2291
1904 mn_now = ev_rt_now; 2292 mn_now = ev_rt_now;
1905 } 2293 }
1906} 2294}
1907 2295
1908void 2296void
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 2297ev_loop (EV_P_ int flags)
1930{ 2298{
2299#if EV_FEATURE_API
2300 ++loop_depth;
2301#endif
2302
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2304
1931 loop_done = EVUNLOOP_CANCEL; 2305 loop_done = EVUNLOOP_CANCEL;
1932 2306
1933 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1934 2308
1935 do 2309 do
1936 { 2310 {
1937#if EV_VERIFY >= 2 2311#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 2312 ev_verify (EV_A);
1939#endif 2313#endif
1940 2314
1941#ifndef _WIN32 2315#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 2316 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 2317 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 2325 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 2326 if (expect_false (postfork))
1953 if (forkcnt) 2327 if (forkcnt)
1954 { 2328 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2329 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 2330 EV_INVOKE_PENDING;
1957 } 2331 }
1958#endif 2332#endif
1959 2333
2334#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 2335 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 2336 if (expect_false (preparecnt))
1962 { 2337 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2338 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 2339 EV_INVOKE_PENDING;
1965 } 2340 }
2341#endif
1966 2342
1967 if (expect_false (!activecnt)) 2343 if (expect_false (loop_done))
1968 break; 2344 break;
1969 2345
1970 /* we might have forked, so reify kernel state if necessary */ 2346 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 2347 if (expect_false (postfork))
1972 loop_fork (EV_A); 2348 loop_fork (EV_A);
… …
1979 ev_tstamp waittime = 0.; 2355 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 2356 ev_tstamp sleeptime = 0.;
1981 2357
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1983 { 2359 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
1984 /* update time to cancel out callback processing overhead */ 2363 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100); 2364 time_update (EV_A_ 1e100);
1986 2365
1987 waittime = MAX_BLOCKTIME; 2366 waittime = MAX_BLOCKTIME;
1988 2367
… …
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1999 if (waittime > to) waittime = to; 2378 if (waittime > to) waittime = to;
2000 } 2379 }
2001#endif 2380#endif
2002 2381
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 2383 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 2384 waittime = timeout_blocktime;
2005 2385
2006 sleeptime = waittime - backend_fudge; 2386 /* extra check because io_blocktime is commonly 0 */
2007
2008 if (expect_true (sleeptime > io_blocktime)) 2387 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 2388 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390
2391 if (sleeptime > waittime - backend_fudge)
2392 sleeptime = waittime - backend_fudge;
2393
2394 if (expect_true (sleeptime > 0.))
2395 {
2013 ev_sleep (sleeptime); 2396 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 2397 waittime -= sleeptime;
2398 }
2015 } 2399 }
2016 } 2400 }
2017 2401
2402#if EV_FEATURE_API
2018 ++loop_count; 2403 ++loop_count;
2404#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2019 backend_poll (EV_A_ waittime); 2406 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2020 2408
2021 /* update ev_rt_now, do magic */ 2409 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 2410 time_update (EV_A_ waittime + sleeptime);
2023 } 2411 }
2024 2412
… …
2031#if EV_IDLE_ENABLE 2419#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 2420 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 2421 idle_reify (EV_A);
2034#endif 2422#endif
2035 2423
2424#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 2425 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 2426 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2427 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2428#endif
2039 2429
2040 call_pending (EV_A); 2430 EV_INVOKE_PENDING;
2041 } 2431 }
2042 while (expect_true ( 2432 while (expect_true (
2043 activecnt 2433 activecnt
2044 && !loop_done 2434 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2046 )); 2436 ));
2047 2437
2048 if (loop_done == EVUNLOOP_ONE) 2438 if (loop_done == EVUNLOOP_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 2439 loop_done = EVUNLOOP_CANCEL;
2440
2441#if EV_FEATURE_API
2442 --loop_depth;
2443#endif
2050} 2444}
2051 2445
2052void 2446void
2053ev_unloop (EV_P_ int how) 2447ev_unloop (EV_P_ int how)
2054{ 2448{
2055 loop_done = how; 2449 loop_done = how;
2056} 2450}
2057 2451
2452void
2453ev_ref (EV_P)
2454{
2455 ++activecnt;
2456}
2457
2458void
2459ev_unref (EV_P)
2460{
2461 --activecnt;
2462}
2463
2464void
2465ev_now_update (EV_P)
2466{
2467 time_update (EV_A_ 1e100);
2468}
2469
2470void
2471ev_suspend (EV_P)
2472{
2473 ev_now_update (EV_A);
2474}
2475
2476void
2477ev_resume (EV_P)
2478{
2479 ev_tstamp mn_prev = mn_now;
2480
2481 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev);
2483#if EV_PERIODIC_ENABLE
2484 /* TODO: really do this? */
2485 periodics_reschedule (EV_A);
2486#endif
2487}
2488
2058/*****************************************************************************/ 2489/*****************************************************************************/
2490/* singly-linked list management, used when the expected list length is short */
2059 2491
2060void inline_size 2492inline_size void
2061wlist_add (WL *head, WL elem) 2493wlist_add (WL *head, WL elem)
2062{ 2494{
2063 elem->next = *head; 2495 elem->next = *head;
2064 *head = elem; 2496 *head = elem;
2065} 2497}
2066 2498
2067void inline_size 2499inline_size void
2068wlist_del (WL *head, WL elem) 2500wlist_del (WL *head, WL elem)
2069{ 2501{
2070 while (*head) 2502 while (*head)
2071 { 2503 {
2072 if (*head == elem) 2504 if (expect_true (*head == elem))
2073 { 2505 {
2074 *head = elem->next; 2506 *head = elem->next;
2075 return; 2507 break;
2076 } 2508 }
2077 2509
2078 head = &(*head)->next; 2510 head = &(*head)->next;
2079 } 2511 }
2080} 2512}
2081 2513
2082void inline_speed 2514/* internal, faster, version of ev_clear_pending */
2515inline_speed void
2083clear_pending (EV_P_ W w) 2516clear_pending (EV_P_ W w)
2084{ 2517{
2085 if (w->pending) 2518 if (w->pending)
2086 { 2519 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2520 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 2521 w->pending = 0;
2089 } 2522 }
2090} 2523}
2091 2524
2092int 2525int
… …
2096 int pending = w_->pending; 2529 int pending = w_->pending;
2097 2530
2098 if (expect_true (pending)) 2531 if (expect_true (pending))
2099 { 2532 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2533 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2534 p->w = (W)&pending_w;
2101 w_->pending = 0; 2535 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 2536 return p->events;
2104 } 2537 }
2105 else 2538 else
2106 return 0; 2539 return 0;
2107} 2540}
2108 2541
2109void inline_size 2542inline_size void
2110pri_adjust (EV_P_ W w) 2543pri_adjust (EV_P_ W w)
2111{ 2544{
2112 int pri = w->priority; 2545 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2546 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2547 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 2548 ev_set_priority (w, pri);
2116} 2549}
2117 2550
2118void inline_speed 2551inline_speed void
2119ev_start (EV_P_ W w, int active) 2552ev_start (EV_P_ W w, int active)
2120{ 2553{
2121 pri_adjust (EV_A_ w); 2554 pri_adjust (EV_A_ w);
2122 w->active = active; 2555 w->active = active;
2123 ev_ref (EV_A); 2556 ev_ref (EV_A);
2124} 2557}
2125 2558
2126void inline_size 2559inline_size void
2127ev_stop (EV_P_ W w) 2560ev_stop (EV_P_ W w)
2128{ 2561{
2129 ev_unref (EV_A); 2562 ev_unref (EV_A);
2130 w->active = 0; 2563 w->active = 0;
2131} 2564}
… …
2138 int fd = w->fd; 2571 int fd = w->fd;
2139 2572
2140 if (expect_false (ev_is_active (w))) 2573 if (expect_false (ev_is_active (w)))
2141 return; 2574 return;
2142 2575
2143 assert (("ev_io_start called with negative fd", fd >= 0)); 2576 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2577 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2144 2578
2145 EV_FREQUENT_CHECK; 2579 EV_FREQUENT_CHECK;
2146 2580
2147 ev_start (EV_A_ (W)w, 1); 2581 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 2583 wlist_add (&anfds[fd].head, (WL)w);
2150 2584
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 2586 w->events &= ~EV__IOFDSET;
2153 2587
2154 EV_FREQUENT_CHECK; 2588 EV_FREQUENT_CHECK;
2155} 2589}
2156 2590
2157void noinline 2591void noinline
… …
2159{ 2593{
2160 clear_pending (EV_A_ (W)w); 2594 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 2595 if (expect_false (!ev_is_active (w)))
2162 return; 2596 return;
2163 2597
2164 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2598 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2165 2599
2166 EV_FREQUENT_CHECK; 2600 EV_FREQUENT_CHECK;
2167 2601
2168 wlist_del (&anfds[w->fd].head, (WL)w); 2602 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 2603 ev_stop (EV_A_ (W)w);
2170 2604
2171 fd_change (EV_A_ w->fd, 1); 2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 2606
2173 EV_FREQUENT_CHECK; 2607 EV_FREQUENT_CHECK;
2174} 2608}
2175 2609
2176void noinline 2610void noinline
… …
2179 if (expect_false (ev_is_active (w))) 2613 if (expect_false (ev_is_active (w)))
2180 return; 2614 return;
2181 2615
2182 ev_at (w) += mn_now; 2616 ev_at (w) += mn_now;
2183 2617
2184 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2618 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2185 2619
2186 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2187 2621
2188 ++timercnt; 2622 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2623 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 2626 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 2627 upheap (timers, ev_active (w));
2194 2628
2195 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2196 2630
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 2632}
2199 2633
2200void noinline 2634void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 2635ev_timer_stop (EV_P_ ev_timer *w)
2202{ 2636{
… …
2207 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2208 2642
2209 { 2643 {
2210 int active = ev_active (w); 2644 int active = ev_active (w);
2211 2645
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2646 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 2647
2214 --timercnt; 2648 --timercnt;
2215 2649
2216 if (expect_true (active < timercnt + HEAP0)) 2650 if (expect_true (active < timercnt + HEAP0))
2217 { 2651 {
2218 timers [active] = timers [timercnt + HEAP0]; 2652 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 2653 adjustheap (timers, timercnt, active);
2220 } 2654 }
2221 } 2655 }
2222 2656
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 2657 ev_at (w) -= mn_now;
2226 2658
2227 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
2660
2661 EV_FREQUENT_CHECK;
2228} 2662}
2229 2663
2230void noinline 2664void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 2665ev_timer_again (EV_P_ ev_timer *w)
2232{ 2666{
… …
2250 } 2684 }
2251 2685
2252 EV_FREQUENT_CHECK; 2686 EV_FREQUENT_CHECK;
2253} 2687}
2254 2688
2689ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w)
2691{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2693}
2694
2255#if EV_PERIODIC_ENABLE 2695#if EV_PERIODIC_ENABLE
2256void noinline 2696void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 2697ev_periodic_start (EV_P_ ev_periodic *w)
2258{ 2698{
2259 if (expect_false (ev_is_active (w))) 2699 if (expect_false (ev_is_active (w)))
… …
2261 2701
2262 if (w->reschedule_cb) 2702 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 2704 else if (w->interval)
2265 { 2705 {
2266 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 2707 /* this formula differs from the one in periodic_reify because we do not always round up */
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 2709 }
2270 else 2710 else
2271 ev_at (w) = w->offset; 2711 ev_at (w) = w->offset;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 2719 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 2720 upheap (periodics, ev_active (w));
2281 2721
2282 EV_FREQUENT_CHECK; 2722 EV_FREQUENT_CHECK;
2283 2723
2284 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2285} 2725}
2286 2726
2287void noinline 2727void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 2728ev_periodic_stop (EV_P_ ev_periodic *w)
2289{ 2729{
… …
2294 EV_FREQUENT_CHECK; 2734 EV_FREQUENT_CHECK;
2295 2735
2296 { 2736 {
2297 int active = ev_active (w); 2737 int active = ev_active (w);
2298 2738
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2739 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 2740
2301 --periodiccnt; 2741 --periodiccnt;
2302 2742
2303 if (expect_true (active < periodiccnt + HEAP0)) 2743 if (expect_true (active < periodiccnt + HEAP0))
2304 { 2744 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 2745 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 2746 adjustheap (periodics, periodiccnt, active);
2307 } 2747 }
2308 } 2748 }
2309 2749
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 2750 ev_stop (EV_A_ (W)w);
2751
2752 EV_FREQUENT_CHECK;
2313} 2753}
2314 2754
2315void noinline 2755void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 2756ev_periodic_again (EV_P_ ev_periodic *w)
2317{ 2757{
… …
2323 2763
2324#ifndef SA_RESTART 2764#ifndef SA_RESTART
2325# define SA_RESTART 0 2765# define SA_RESTART 0
2326#endif 2766#endif
2327 2767
2768#if EV_SIGNAL_ENABLE
2769
2328void noinline 2770void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 2771ev_signal_start (EV_P_ ev_signal *w)
2330{ 2772{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 2773 if (expect_false (ev_is_active (w)))
2335 return; 2774 return;
2336 2775
2337 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2338 2777
2339 evpipe_init (EV_A); 2778#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2340 2781
2341 EV_FREQUENT_CHECK; 2782 signals [w->signum - 1].loop = EV_A;
2783#endif
2342 2784
2785 EV_FREQUENT_CHECK;
2786
2787#if EV_USE_SIGNALFD
2788 if (sigfd == -2)
2343 { 2789 {
2344#ifndef _WIN32 2790 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 2791 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 2792 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 2793
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2794 if (sigfd >= 0)
2795 {
2796 fd_intern (sigfd); /* doing it twice will not hurt */
2351 2797
2352#ifndef _WIN32 2798 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 2799
2354#endif 2800 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2801 ev_set_priority (&sigfd_w, EV_MAXPRI);
2802 ev_io_start (EV_A_ &sigfd_w);
2803 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2804 }
2355 } 2805 }
2806
2807 if (sigfd >= 0)
2808 {
2809 /* TODO: check .head */
2810 sigaddset (&sigfd_set, w->signum);
2811 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2812
2813 signalfd (sigfd, &sigfd_set, 0);
2814 }
2815#endif
2356 2816
2357 ev_start (EV_A_ (W)w, 1); 2817 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 2818 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 2819
2360 if (!((WL)w)->next) 2820 if (!((WL)w)->next)
2821# if EV_USE_SIGNALFD
2822 if (sigfd < 0) /*TODO*/
2823# endif
2361 { 2824 {
2362#if _WIN32 2825# ifdef _WIN32
2826 evpipe_init (EV_A);
2827
2363 signal (w->signum, ev_sighandler); 2828 signal (w->signum, ev_sighandler);
2364#else 2829# else
2365 struct sigaction sa; 2830 struct sigaction sa;
2831
2832 evpipe_init (EV_A);
2833
2366 sa.sa_handler = ev_sighandler; 2834 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 2835 sigfillset (&sa.sa_mask);
2368 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2369 sigaction (w->signum, &sa, 0); 2837 sigaction (w->signum, &sa, 0);
2838
2839 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2370#endif 2842#endif
2371 } 2843 }
2372 2844
2373 EV_FREQUENT_CHECK; 2845 EV_FREQUENT_CHECK;
2374} 2846}
2375 2847
2376void noinline 2848void noinline
… …
2384 2856
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 2857 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 2858 ev_stop (EV_A_ (W)w);
2387 2859
2388 if (!signals [w->signum - 1].head) 2860 if (!signals [w->signum - 1].head)
2861 {
2862#if EV_MULTIPLICITY
2863 signals [w->signum - 1].loop = 0; /* unattach from signal */
2864#endif
2865#if EV_USE_SIGNALFD
2866 if (sigfd >= 0)
2867 {
2868 sigset_t ss;
2869
2870 sigemptyset (&ss);
2871 sigaddset (&ss, w->signum);
2872 sigdelset (&sigfd_set, w->signum);
2873
2874 signalfd (sigfd, &sigfd_set, 0);
2875 sigprocmask (SIG_UNBLOCK, &ss, 0);
2876 }
2877 else
2878#endif
2389 signal (w->signum, SIG_DFL); 2879 signal (w->signum, SIG_DFL);
2880 }
2390 2881
2391 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
2392} 2883}
2884
2885#endif
2886
2887#if EV_CHILD_ENABLE
2393 2888
2394void 2889void
2395ev_child_start (EV_P_ ev_child *w) 2890ev_child_start (EV_P_ ev_child *w)
2396{ 2891{
2397#if EV_MULTIPLICITY 2892#if EV_MULTIPLICITY
2398 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2399#endif 2894#endif
2400 if (expect_false (ev_is_active (w))) 2895 if (expect_false (ev_is_active (w)))
2401 return; 2896 return;
2402 2897
2403 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2404 2899
2405 ev_start (EV_A_ (W)w, 1); 2900 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 2902
2408 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2409} 2904}
2410 2905
2411void 2906void
… …
2415 if (expect_false (!ev_is_active (w))) 2910 if (expect_false (!ev_is_active (w)))
2416 return; 2911 return;
2417 2912
2418 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2419 2914
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2915 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 2916 ev_stop (EV_A_ (W)w);
2422 2917
2423 EV_FREQUENT_CHECK; 2918 EV_FREQUENT_CHECK;
2424} 2919}
2920
2921#endif
2425 2922
2426#if EV_STAT_ENABLE 2923#if EV_STAT_ENABLE
2427 2924
2428# ifdef _WIN32 2925# ifdef _WIN32
2429# undef lstat 2926# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 2927# define lstat(a,b) _stati64 (a,b)
2431# endif 2928# endif
2432 2929
2433#define DEF_STAT_INTERVAL 5.0074891 2930#define DEF_STAT_INTERVAL 5.0074891
2931#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2434#define MIN_STAT_INTERVAL 0.1074891 2932#define MIN_STAT_INTERVAL 0.1074891
2435 2933
2436static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2934static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2437 2935
2438#if EV_USE_INOTIFY 2936#if EV_USE_INOTIFY
2439# define EV_INOTIFY_BUFSIZE 8192 2937
2938/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2440 2940
2441static void noinline 2941static void noinline
2442infy_add (EV_P_ ev_stat *w) 2942infy_add (EV_P_ ev_stat *w)
2443{ 2943{
2444 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); 2944 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);
2445 2945
2446 if (w->wd < 0) 2946 if (w->wd >= 0)
2947 {
2948 struct statfs sfs;
2949
2950 /* now local changes will be tracked by inotify, but remote changes won't */
2951 /* unless the filesystem is known to be local, we therefore still poll */
2952 /* also do poll on <2.6.25, but with normal frequency */
2953
2954 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */
2959 || sfs.f_type == 0x3153464a /* jfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */
2962 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2447 { 2966 }
2448 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2967 else
2968 {
2969 /* can't use inotify, continue to stat */
2970 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2449 2971
2450 /* monitor some parent directory for speedup hints */ 2972 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2973 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 2974 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2975 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 2976 {
2455 char path [4096]; 2977 char path [4096];
2456 strcpy (path, w->path); 2978 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2982 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2983 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 2984
2463 char *pend = strrchr (path, '/'); 2985 char *pend = strrchr (path, '/');
2464 2986
2465 if (!pend) 2987 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 2988 break;
2467 2989
2468 *pend = 0; 2990 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 2991 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 2992 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 2994 }
2473 } 2995 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 2996
2477 if (w->wd >= 0) 2997 if (w->wd >= 0)
2478 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2998 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2999
3000 /* now re-arm timer, if required */
3001 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3002 ev_timer_again (EV_A_ &w->timer);
3003 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2479} 3004}
2480 3005
2481static void noinline 3006static void noinline
2482infy_del (EV_P_ ev_stat *w) 3007infy_del (EV_P_ ev_stat *w)
2483{ 3008{
… …
2486 3011
2487 if (wd < 0) 3012 if (wd < 0)
2488 return; 3013 return;
2489 3014
2490 w->wd = -2; 3015 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3016 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 3017 wlist_del (&fs_hash [slot].head, (WL)w);
2493 3018
2494 /* remove this watcher, if others are watching it, they will rearm */ 3019 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 3020 inotify_rm_watch (fs_fd, wd);
2496} 3021}
… …
2498static void noinline 3023static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 3025{
2501 if (slot < 0) 3026 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 3027 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 3029 infy_wd (EV_A_ slot, wd, ev);
2505 else 3030 else
2506 { 3031 {
2507 WL w_; 3032 WL w_;
2508 3033
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3034 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 3035 {
2511 ev_stat *w = (ev_stat *)w_; 3036 ev_stat *w = (ev_stat *)w_;
2512 w_ = w_->next; /* lets us remove this watcher and all before it */ 3037 w_ = w_->next; /* lets us remove this watcher and all before it */
2513 3038
2514 if (w->wd == wd || wd == -1) 3039 if (w->wd == wd || wd == -1)
2515 { 3040 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3041 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 3042 {
3043 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 3044 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 3045 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 3046 }
2521 3047
2522 stat_timer_cb (EV_A_ &w->timer, 0); 3048 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 3053
2528static void 3054static void
2529infy_cb (EV_P_ ev_io *w, int revents) 3055infy_cb (EV_P_ ev_io *w, int revents)
2530{ 3056{
2531 char buf [EV_INOTIFY_BUFSIZE]; 3057 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 3058 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 3059 int len = read (fs_fd, buf, sizeof (buf));
2535 3060
2536 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3061 for (ofs = 0; ofs < len; )
3062 {
3063 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2537 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3064 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len;
3066 }
2538} 3067}
2539 3068
2540void inline_size 3069inline_size unsigned int
2541infy_init (EV_P) 3070ev_linux_version (void)
2542{ 3071{
2543 if (fs_fd != -2) 3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
2544 return; 3078 return 0;
2545 3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099}
3100
3101inline_size void
3102ev_check_2625 (EV_P)
3103{
2546 /* kernels < 2.6.25 are borked 3104 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */ 3106 */
2549 { 3107 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 3108 return;
2551 int major, minor, micro;
2552 3109
3110 fs_2625 = 1;
3111}
3112
3113inline_size int
3114infy_newfd (void)
3115{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0)
3119 return fd;
3120#endif
3121 return inotify_init ();
3122}
3123
3124inline_size void
3125infy_init (EV_P)
3126{
3127 if (fs_fd != -2)
3128 return;
3129
2553 fs_fd = -1; 3130 fs_fd = -1;
2554 3131
2555 if (uname (&buf)) 3132 ev_check_2625 (EV_A);
2556 return;
2557 3133
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 3134 fs_fd = infy_newfd ();
2568 3135
2569 if (fs_fd >= 0) 3136 if (fs_fd >= 0)
2570 { 3137 {
3138 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3139 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 3140 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 3141 ev_io_start (EV_A_ &fs_w);
3142 ev_unref (EV_A);
2574 } 3143 }
2575} 3144}
2576 3145
2577void inline_size 3146inline_size void
2578infy_fork (EV_P) 3147infy_fork (EV_P)
2579{ 3148{
2580 int slot; 3149 int slot;
2581 3150
2582 if (fs_fd < 0) 3151 if (fs_fd < 0)
2583 return; 3152 return;
2584 3153
3154 ev_ref (EV_A);
3155 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 3156 close (fs_fd);
2586 fs_fd = inotify_init (); 3157 fs_fd = infy_newfd ();
2587 3158
3159 if (fs_fd >= 0)
3160 {
3161 fd_intern (fs_fd);
3162 ev_io_set (&fs_w, fs_fd, EV_READ);
3163 ev_io_start (EV_A_ &fs_w);
3164 ev_unref (EV_A);
3165 }
3166
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3167 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 3168 {
2590 WL w_ = fs_hash [slot].head; 3169 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 3170 fs_hash [slot].head = 0;
2592 3171
2593 while (w_) 3172 while (w_)
… …
2598 w->wd = -1; 3177 w->wd = -1;
2599 3178
2600 if (fs_fd >= 0) 3179 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 3180 infy_add (EV_A_ w); /* re-add, no matter what */
2602 else 3181 else
3182 {
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2603 ev_timer_start (EV_A_ &w->timer); 3185 ev_timer_again (EV_A_ &w->timer);
3186 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3187 }
2604 } 3188 }
2605 } 3189 }
2606} 3190}
2607 3191
2608#endif 3192#endif
… …
2625static void noinline 3209static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3210stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 3211{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 3213
2630 /* we copy this here each the time so that */ 3214 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 3215 ev_stat_stat (EV_A_ w);
2634 3216
2635 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3217 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2636 if ( 3218 if (
2637 w->prev.st_dev != w->attr.st_dev 3219 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 3220 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 3221 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 3222 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 3223 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 3224 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 3225 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 3226 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 3227 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 3228 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 3229 || prev.st_ctime != w->attr.st_ctime
2648 ) { 3230 ) {
3231 /* we only update w->prev on actual differences */
3232 /* in case we test more often than invoke the callback, */
3233 /* to ensure that prev is always different to attr */
3234 w->prev = prev;
3235
2649 #if EV_USE_INOTIFY 3236 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 3237 if (fs_fd >= 0)
2651 { 3238 {
2652 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
… …
2663ev_stat_start (EV_P_ ev_stat *w) 3250ev_stat_start (EV_P_ ev_stat *w)
2664{ 3251{
2665 if (expect_false (ev_is_active (w))) 3252 if (expect_false (ev_is_active (w)))
2666 return; 3253 return;
2667 3254
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 3255 ev_stat_stat (EV_A_ w);
2673 3256
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 3258 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 3259
2677 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3260 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2678 ev_set_priority (&w->timer, ev_priority (w)); 3261 ev_set_priority (&w->timer, ev_priority (w));
2679 3262
2680#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2681 infy_init (EV_A); 3264 infy_init (EV_A);
2682 3265
2683 if (fs_fd >= 0) 3266 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2685 else 3268 else
2686#endif 3269#endif
3270 {
2687 ev_timer_start (EV_A_ &w->timer); 3271 ev_timer_again (EV_A_ &w->timer);
3272 ev_unref (EV_A);
3273 }
2688 3274
2689 ev_start (EV_A_ (W)w, 1); 3275 ev_start (EV_A_ (W)w, 1);
2690 3276
2691 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2692} 3278}
… …
2701 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2702 3288
2703#if EV_USE_INOTIFY 3289#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 3290 infy_del (EV_A_ w);
2705#endif 3291#endif
3292
3293 if (ev_is_active (&w->timer))
3294 {
3295 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 3296 ev_timer_stop (EV_A_ &w->timer);
3297 }
2707 3298
2708 ev_stop (EV_A_ (W)w); 3299 ev_stop (EV_A_ (W)w);
2709 3300
2710 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2711} 3302}
… …
2756 3347
2757 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2758} 3349}
2759#endif 3350#endif
2760 3351
3352#if EV_PREPARE_ENABLE
2761void 3353void
2762ev_prepare_start (EV_P_ ev_prepare *w) 3354ev_prepare_start (EV_P_ ev_prepare *w)
2763{ 3355{
2764 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2765 return; 3357 return;
… …
2791 3383
2792 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
2793 3385
2794 EV_FREQUENT_CHECK; 3386 EV_FREQUENT_CHECK;
2795} 3387}
3388#endif
2796 3389
3390#if EV_CHECK_ENABLE
2797void 3391void
2798ev_check_start (EV_P_ ev_check *w) 3392ev_check_start (EV_P_ ev_check *w)
2799{ 3393{
2800 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2801 return; 3395 return;
… …
2827 3421
2828 ev_stop (EV_A_ (W)w); 3422 ev_stop (EV_A_ (W)w);
2829 3423
2830 EV_FREQUENT_CHECK; 3424 EV_FREQUENT_CHECK;
2831} 3425}
3426#endif
2832 3427
2833#if EV_EMBED_ENABLE 3428#if EV_EMBED_ENABLE
2834void noinline 3429void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 3430ev_embed_sweep (EV_P_ ev_embed *w)
2836{ 3431{
… …
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 3448{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3449 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 3450
2856 { 3451 {
2857 struct ev_loop *loop = w->other; 3452 EV_P = w->other;
2858 3453
2859 while (fdchangecnt) 3454 while (fdchangecnt)
2860 { 3455 {
2861 fd_reify (EV_A); 3456 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3457 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2867static void 3462static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 3464{
2870 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3465 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2871 3466
3467 ev_embed_stop (EV_A_ w);
3468
2872 { 3469 {
2873 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2874 3471
2875 ev_loop_fork (EV_A); 3472 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2876 } 3474 }
3475
3476 ev_embed_start (EV_A_ w);
2877} 3477}
2878 3478
2879#if 0 3479#if 0
2880static void 3480static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3481embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2889{ 3489{
2890 if (expect_false (ev_is_active (w))) 3490 if (expect_false (ev_is_active (w)))
2891 return; 3491 return;
2892 3492
2893 { 3493 {
2894 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2895 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3495 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2896 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3496 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2897 } 3497 }
2898 3498
2899 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2900 3500
… …
2926 3526
2927 ev_io_stop (EV_A_ &w->io); 3527 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 3528 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 3529 ev_fork_stop (EV_A_ &w->fork);
2930 3530
3531 ev_stop (EV_A_ (W)w);
3532
2931 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2932} 3534}
2933#endif 3535#endif
2934 3536
2935#if EV_FORK_ENABLE 3537#if EV_FORK_ENABLE
… …
3011 3613
3012void 3614void
3013ev_async_send (EV_P_ ev_async *w) 3615ev_async_send (EV_P_ ev_async *w)
3014{ 3616{
3015 w->sent = 1; 3617 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 3618 evpipe_write (EV_A_ &async_pending);
3017} 3619}
3018#endif 3620#endif
3019 3621
3020/*****************************************************************************/ 3622/*****************************************************************************/
3021 3623
… …
3061{ 3663{
3062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3664 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3063 3665
3064 if (expect_false (!once)) 3666 if (expect_false (!once))
3065 { 3667 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3668 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 3669 return;
3068 } 3670 }
3069 3671
3070 once->cb = cb; 3672 once->cb = cb;
3071 once->arg = arg; 3673 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 3685 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 3686 ev_timer_start (EV_A_ &once->to);
3085 } 3687 }
3086} 3688}
3087 3689
3690/*****************************************************************************/
3691
3692#if EV_WALK_ENABLE
3693void
3694ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3695{
3696 int i, j;
3697 ev_watcher_list *wl, *wn;
3698
3699 if (types & (EV_IO | EV_EMBED))
3700 for (i = 0; i < anfdmax; ++i)
3701 for (wl = anfds [i].head; wl; )
3702 {
3703 wn = wl->next;
3704
3705#if EV_EMBED_ENABLE
3706 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3707 {
3708 if (types & EV_EMBED)
3709 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3710 }
3711 else
3712#endif
3713#if EV_USE_INOTIFY
3714 if (ev_cb ((ev_io *)wl) == infy_cb)
3715 ;
3716 else
3717#endif
3718 if ((ev_io *)wl != &pipe_w)
3719 if (types & EV_IO)
3720 cb (EV_A_ EV_IO, wl);
3721
3722 wl = wn;
3723 }
3724
3725 if (types & (EV_TIMER | EV_STAT))
3726 for (i = timercnt + HEAP0; i-- > HEAP0; )
3727#if EV_STAT_ENABLE
3728 /*TODO: timer is not always active*/
3729 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3730 {
3731 if (types & EV_STAT)
3732 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3733 }
3734 else
3735#endif
3736 if (types & EV_TIMER)
3737 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3738
3739#if EV_PERIODIC_ENABLE
3740 if (types & EV_PERIODIC)
3741 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3742 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3743#endif
3744
3745#if EV_IDLE_ENABLE
3746 if (types & EV_IDLE)
3747 for (j = NUMPRI; i--; )
3748 for (i = idlecnt [j]; i--; )
3749 cb (EV_A_ EV_IDLE, idles [j][i]);
3750#endif
3751
3752#if EV_FORK_ENABLE
3753 if (types & EV_FORK)
3754 for (i = forkcnt; i--; )
3755 if (ev_cb (forks [i]) != embed_fork_cb)
3756 cb (EV_A_ EV_FORK, forks [i]);
3757#endif
3758
3759#if EV_ASYNC_ENABLE
3760 if (types & EV_ASYNC)
3761 for (i = asynccnt; i--; )
3762 cb (EV_A_ EV_ASYNC, asyncs [i]);
3763#endif
3764
3765#if EV_PREPARE_ENABLE
3766 if (types & EV_PREPARE)
3767 for (i = preparecnt; i--; )
3768# if EV_EMBED_ENABLE
3769 if (ev_cb (prepares [i]) != embed_prepare_cb)
3770# endif
3771 cb (EV_A_ EV_PREPARE, prepares [i]);
3772#endif
3773
3774#if EV_CHECK_ENABLE
3775 if (types & EV_CHECK)
3776 for (i = checkcnt; i--; )
3777 cb (EV_A_ EV_CHECK, checks [i]);
3778#endif
3779
3780#if EV_SIGNAL_ENABLE
3781 if (types & EV_SIGNAL)
3782 for (i = 0; i < EV_NSIG - 1; ++i)
3783 for (wl = signals [i].head; wl; )
3784 {
3785 wn = wl->next;
3786 cb (EV_A_ EV_SIGNAL, wl);
3787 wl = wn;
3788 }
3789#endif
3790
3791#if EV_CHILD_ENABLE
3792 if (types & EV_CHILD)
3793 for (i = (EV_PID_HASHSIZE); i--; )
3794 for (wl = childs [i]; wl; )
3795 {
3796 wn = wl->next;
3797 cb (EV_A_ EV_CHILD, wl);
3798 wl = wn;
3799 }
3800#endif
3801/* EV_STAT 0x00001000 /* stat data changed */
3802/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3803}
3804#endif
3805
3088#if EV_MULTIPLICITY 3806#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 3807 #include "ev_wrap.h"
3090#endif 3808#endif
3091 3809
3092#ifdef __cplusplus 3810#ifdef __cplusplus

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