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Comparing libev/ev.c (file contents):
Revision 1.275 by root, Fri Dec 12 20:35:21 2008 UTC vs.
Revision 1.351 by root, Sat Oct 16 06:46:55 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 *
… …
57# endif 57# endif
58# ifndef EV_USE_MONOTONIC 58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 59# define EV_USE_MONOTONIC 1
60# endif 60# endif
61# endif 61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
62# endif 64# endif
63 65
64# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
67# endif 69# endif
68# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
69# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
70# endif 72# endif
71# else 73# else
72# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
73# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
74# endif 76# endif
75# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
77# endif 79# endif
78# endif 80# endif
79 81
82# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
83# else 86# else
87# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
86# endif 98# endif
87 99
100# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 103# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 104# else
105# undef EV_USE_POLL
100# define EV_USE_POLL 0 106# define EV_USE_POLL 0
101# endif
102# endif 107# endif
103 108
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
107# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
110# endif 116# endif
111 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
118# endif 125# endif
119 126
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
123# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
126# endif 134# endif
127 135
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
134# endif 143# endif
135 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
142# endif 161# endif
143 162
144#endif 163#endif
145 164
146#include <math.h> 165#include <math.h>
147#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
148#include <fcntl.h> 168#include <fcntl.h>
149#include <stddef.h> 169#include <stddef.h>
150 170
151#include <stdio.h> 171#include <stdio.h>
152 172
153#include <assert.h> 173#include <assert.h>
154#include <errno.h> 174#include <errno.h>
155#include <sys/types.h> 175#include <sys/types.h>
156#include <time.h> 176#include <time.h>
177#include <limits.h>
157 178
158#include <signal.h> 179#include <signal.h>
159 180
160#ifdef EV_H 181#ifdef EV_H
161# include EV_H 182# include EV_H
… …
172# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 194# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
176# endif 197# endif
198# undef EV_AVOID_STDIO
177#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
178 208
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
180 238
181#ifndef EV_USE_CLOCK_SYSCALL 239#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 240# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 242# else
185# define EV_USE_CLOCK_SYSCALL 0 243# define EV_USE_CLOCK_SYSCALL 0
186# endif 244# endif
187#endif 245#endif
188 246
189#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 250# else
193# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
194# endif 252# endif
195#endif 253#endif
196 254
197#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
198# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 257#endif
200 258
201#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 262# else
205# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
206# endif 264# endif
207#endif 265#endif
208 266
209#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 269#endif
212 270
213#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
214# ifdef _WIN32 272# ifdef _WIN32
215# define EV_USE_POLL 0 273# define EV_USE_POLL 0
216# else 274# else
217# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 276# endif
219#endif 277#endif
220 278
221#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 282# else
225# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
226# endif 284# endif
227#endif 285#endif
228 286
… …
234# define EV_USE_PORT 0 292# define EV_USE_PORT 0
235#endif 293#endif
236 294
237#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 298# else
241# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
242# endif 300# endif
243#endif 301#endif
244 302
245#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 305#endif
252 306
253#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 309#endif
260 310
261#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 314# else
265# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
316# endif
317#endif
318
319#ifndef EV_USE_SIGNALFD
320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
321# define EV_USE_SIGNALFD EV_FEATURE_OS
322# else
323# define EV_USE_SIGNALFD 0
266# endif 324# endif
267#endif 325#endif
268 326
269#if 0 /* debugging */ 327#if 0 /* debugging */
270# define EV_VERIFY 3 328# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
273#endif 331#endif
274 332
275#ifndef EV_VERIFY 333#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 335#endif
278 336
279#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 339#endif
282 340
283#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif
344
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h>
349# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1
353# else
354# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0
356# endif
285#endif 357#endif
286 358
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 359/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
288 366
289#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
292#endif 370#endif
… …
320 398
321#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 400# include <winsock.h>
323#endif 401#endif
324 402
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 405# include <stdint.h>
406# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK
408# endif
409# ifndef EFD_CLOEXEC
410# ifdef O_CLOEXEC
411# define EFD_CLOEXEC O_CLOEXEC
412# else
413# define EFD_CLOEXEC 02000000
414# endif
415# endif
337# ifdef __cplusplus 416# ifdef __cplusplus
338extern "C" { 417extern "C" {
339# endif 418# endif
340int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
341# ifdef __cplusplus 420# ifdef __cplusplus
342} 421}
343# endif 422# endif
344#endif 423#endif
345 424
425#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h>
428# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK
430# endif
431# ifndef SFD_CLOEXEC
432# ifdef O_CLOEXEC
433# define SFD_CLOEXEC O_CLOEXEC
434# else
435# define SFD_CLOEXEC 02000000
436# endif
437# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags);
442
443struct signalfd_siginfo
444{
445 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)];
447};
448# ifdef __cplusplus
449}
450# endif
451#endif
452
346/**/ 453/**/
347 454
348#if EV_VERIFY >= 3 455#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 456# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 457#else
351# define EV_FREQUENT_CHECK do { } while (0) 458# define EV_FREQUENT_CHECK do { } while (0)
352#endif 459#endif
353 460
354/* 461/*
… …
361 */ 468 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363 470
364#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) */
365#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) */
366/*#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)
367 476
368#if __GNUC__ >= 4 477#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 478# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 479# define noinline __attribute__ ((noinline))
371#else 480#else
… …
378 487
379#define expect_false(expr) expect ((expr) != 0, 0) 488#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 489#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 490#define inline_size static inline
382 491
383#if EV_MINIMAL 492#if EV_FEATURE_CODE
493# define inline_speed static inline
494#else
384# 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)
385#else 502#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif
391 505
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 506#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 507#define EMPTY2(a,b) /* used to suppress some warnings */
394 508
395typedef ev_watcher *W; 509typedef ev_watcher *W;
… …
397typedef ev_watcher_time *WT; 511typedef ev_watcher_time *WT;
398 512
399#define ev_active(w) ((W)(w))->active 513#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 514#define ev_at(w) ((WT)(w))->at
401 515
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
402#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
405static 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)
406#endif 534#endif
407 535
408#ifdef _WIN32 536#ifdef _WIN32
409# include "ev_win32.c" 537# include "ev_win32.c"
410#endif 538#endif
411 539
412/*****************************************************************************/ 540/*****************************************************************************/
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
413 549
414static void (*syserr_cb)(const char *msg); 550static void (*syserr_cb)(const char *msg);
415 551
416void 552void
417ev_set_syserr_cb (void (*cb)(const char *msg)) 553ev_set_syserr_cb (void (*cb)(const char *msg))
… …
427 563
428 if (syserr_cb) 564 if (syserr_cb)
429 syserr_cb (msg); 565 syserr_cb (msg);
430 else 566 else
431 { 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
432 perror (msg); 576 perror (msg);
577#endif
433 abort (); 578 abort ();
434 } 579 }
435} 580}
436 581
437static void * 582static void *
438ev_realloc_emul (void *ptr, long size) 583ev_realloc_emul (void *ptr, long size)
439{ 584{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
440 /* some systems, notably openbsd and darwin, fail to properly 588 /* some systems, notably openbsd and darwin, fail to properly
441 * 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
442 * the single unix specification, so work around them here. 590 * the single unix specification, so work around them here.
443 */ 591 */
444 592
445 if (size) 593 if (size)
446 return realloc (ptr, size); 594 return realloc (ptr, size);
447 595
448 free (ptr); 596 free (ptr);
449 return 0; 597 return 0;
598#endif
450} 599}
451 600
452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
453 602
454void 603void
… …
462{ 611{
463 ptr = alloc (ptr, size); 612 ptr = alloc (ptr, size);
464 613
465 if (!ptr && size) 614 if (!ptr && size)
466 { 615 {
616#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n");
618#else
467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
620#endif
468 abort (); 621 abort ();
469 } 622 }
470 623
471 return ptr; 624 return ptr;
472} 625}
… …
474#define ev_malloc(size) ev_realloc (0, (size)) 627#define ev_malloc(size) ev_realloc (0, (size))
475#define ev_free(ptr) ev_realloc ((ptr), 0) 628#define ev_free(ptr) ev_realloc ((ptr), 0)
476 629
477/*****************************************************************************/ 630/*****************************************************************************/
478 631
632/* set in reify when reification needed */
633#define EV_ANFD_REIFY 1
634
635/* file descriptor info structure */
479typedef struct 636typedef struct
480{ 637{
481 WL head; 638 WL head;
482 unsigned char events; 639 unsigned char events; /* the events watched for */
483 unsigned char reify; 640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused; 642 unsigned char unused;
486#if EV_USE_EPOLL 643#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */ 644 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif 645#endif
489#if EV_SELECT_IS_WINSOCKET 646#if EV_SELECT_IS_WINSOCKET
490 SOCKET handle; 647 SOCKET handle;
491#endif 648#endif
492} ANFD; 649} ANFD;
493 650
651/* stores the pending event set for a given watcher */
494typedef struct 652typedef struct
495{ 653{
496 W w; 654 W w;
497 int events; 655 int events; /* the pending event set for the given watcher */
498} ANPENDING; 656} ANPENDING;
499 657
500#if EV_USE_INOTIFY 658#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */ 659/* hash table entry per inotify-id */
502typedef struct 660typedef struct
… …
505} ANFS; 663} ANFS;
506#endif 664#endif
507 665
508/* Heap Entry */ 666/* Heap Entry */
509#if EV_HEAP_CACHE_AT 667#if EV_HEAP_CACHE_AT
668 /* a heap element */
510 typedef struct { 669 typedef struct {
511 ev_tstamp at; 670 ev_tstamp at;
512 WT w; 671 WT w;
513 } ANHE; 672 } ANHE;
514 673
515 #define ANHE_w(he) (he).w /* access watcher, read-write */ 674 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */ 675 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #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 */
518#else 677#else
678 /* a heap element */
519 typedef WT ANHE; 679 typedef WT ANHE;
520 680
521 #define ANHE_w(he) (he) 681 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at 682 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he) 683 #define ANHE_at_cache(he)
… …
547 707
548 static int ev_default_loop_ptr; 708 static int ev_default_loop_ptr;
549 709
550#endif 710#endif
551 711
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
552/*****************************************************************************/ 724/*****************************************************************************/
553 725
726#ifndef EV_HAVE_EV_TIME
554ev_tstamp 727ev_tstamp
555ev_time (void) 728ev_time (void)
556{ 729{
557#if EV_USE_REALTIME 730#if EV_USE_REALTIME
731 if (expect_true (have_realtime))
732 {
558 struct timespec ts; 733 struct timespec ts;
559 clock_gettime (CLOCK_REALTIME, &ts); 734 clock_gettime (CLOCK_REALTIME, &ts);
560 return ts.tv_sec + ts.tv_nsec * 1e-9; 735 return ts.tv_sec + ts.tv_nsec * 1e-9;
561#else 736 }
737#endif
738
562 struct timeval tv; 739 struct timeval tv;
563 gettimeofday (&tv, 0); 740 gettimeofday (&tv, 0);
564 return tv.tv_sec + tv.tv_usec * 1e-6; 741 return tv.tv_sec + tv.tv_usec * 1e-6;
565#endif
566} 742}
743#endif
567 744
568ev_tstamp inline_size 745inline_size ev_tstamp
569get_clock (void) 746get_clock (void)
570{ 747{
571#if EV_USE_MONOTONIC 748#if EV_USE_MONOTONIC
572 if (expect_true (have_monotonic)) 749 if (expect_true (have_monotonic))
573 { 750 {
… …
594 if (delay > 0.) 771 if (delay > 0.)
595 { 772 {
596#if EV_USE_NANOSLEEP 773#if EV_USE_NANOSLEEP
597 struct timespec ts; 774 struct timespec ts;
598 775
599 ts.tv_sec = (time_t)delay; 776 EV_TS_SET (ts, delay);
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0); 777 nanosleep (&ts, 0);
603#elif defined(_WIN32) 778#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3)); 779 Sleep ((unsigned long)(delay * 1e3));
605#else 780#else
606 struct timeval tv; 781 struct timeval tv;
607 782
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* 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 */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 784 /* something not guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */ 785 /* by older ones */
786 EV_TV_SET (tv, delay);
614 select (0, 0, 0, 0, &tv); 787 select (0, 0, 0, 0, &tv);
615#endif 788#endif
616 } 789 }
617} 790}
618 791
619/*****************************************************************************/ 792/*****************************************************************************/
620 793
621#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 */
622 795
623int 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
624array_nextsize (int elem, int cur, int cnt) 799array_nextsize (int elem, int cur, int cnt)
625{ 800{
626 int ncur = cur + 1; 801 int ncur = cur + 1;
627 802
628 do 803 do
… …
669 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 844 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670 } 845 }
671#endif 846#endif
672 847
673#define array_free(stem, idx) \ 848#define array_free(stem, idx) \
674 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
675 850
676/*****************************************************************************/ 851/*****************************************************************************/
852
853/* dummy callback for pending events */
854static void noinline
855pendingcb (EV_P_ ev_prepare *w, int revents)
856{
857}
677 858
678void noinline 859void noinline
679ev_feed_event (EV_P_ void *w, int revents) 860ev_feed_event (EV_P_ void *w, int revents)
680{ 861{
681 W w_ = (W)w; 862 W w_ = (W)w;
… …
690 pendings [pri][w_->pending - 1].w = w_; 871 pendings [pri][w_->pending - 1].w = w_;
691 pendings [pri][w_->pending - 1].events = revents; 872 pendings [pri][w_->pending - 1].events = revents;
692 } 873 }
693} 874}
694 875
695void 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
696queue_events (EV_P_ W *events, int eventcnt, int type) 892queue_events (EV_P_ W *events, int eventcnt, int type)
697{ 893{
698 int i; 894 int i;
699 895
700 for (i = 0; i < eventcnt; ++i) 896 for (i = 0; i < eventcnt; ++i)
701 ev_feed_event (EV_A_ events [i], type); 897 ev_feed_event (EV_A_ events [i], type);
702} 898}
703 899
704/*****************************************************************************/ 900/*****************************************************************************/
705 901
706void inline_speed 902inline_speed void
707fd_event (EV_P_ int fd, int revents) 903fd_event_nocheck (EV_P_ int fd, int revents)
708{ 904{
709 ANFD *anfd = anfds + fd; 905 ANFD *anfd = anfds + fd;
710 ev_io *w; 906 ev_io *w;
711 907
712 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)
… …
716 if (ev) 912 if (ev)
717 ev_feed_event (EV_A_ (W)w, ev); 913 ev_feed_event (EV_A_ (W)w, ev);
718 } 914 }
719} 915}
720 916
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
721void 928void
722ev_feed_fd_event (EV_P_ int fd, int revents) 929ev_feed_fd_event (EV_P_ int fd, int revents)
723{ 930{
724 if (fd >= 0 && fd < anfdmax) 931 if (fd >= 0 && fd < anfdmax)
725 fd_event (EV_A_ fd, revents); 932 fd_event_nocheck (EV_A_ fd, revents);
726} 933}
727 934
728void inline_size 935/* make sure the external fd watch events are in-sync */
936/* with the kernel/libev internal state */
937inline_size void
729fd_reify (EV_P) 938fd_reify (EV_P)
730{ 939{
731 int i; 940 int i;
732 941
733 for (i = 0; i < fdchangecnt; ++i) 942 for (i = 0; i < fdchangecnt; ++i)
734 { 943 {
735 int fd = fdchanges [i]; 944 int fd = fdchanges [i];
736 ANFD *anfd = anfds + fd; 945 ANFD *anfd = anfds + fd;
737 ev_io *w; 946 ev_io *w;
738 947
739 unsigned char events = 0; 948 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify;
740 950
741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 951 anfd->reify = 0;
742 events |= (unsigned char)w->events;
743 952
744#if EV_SELECT_IS_WINSOCKET 953#if EV_SELECT_IS_WINSOCKET
745 if (events) 954 if (o_reify & EV__IOFDSET)
746 { 955 {
747 unsigned long arg; 956 unsigned long arg;
748 #ifdef EV_FD_TO_WIN32_HANDLE
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750 #else
751 anfd->handle = _get_osfhandle (fd);
752 #endif
753 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));
754 } 959 }
755#endif 960#endif
756 961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
757 { 963 {
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
761 anfd->reify = 0;
762 anfd->events = events; 964 anfd->events = 0;
763 965
764 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)
765 backend_modify (EV_A_ fd, o_events, events); 974 backend_modify (EV_A_ fd, o_events, anfd->events);
766 }
767 } 975 }
768 976
769 fdchangecnt = 0; 977 fdchangecnt = 0;
770} 978}
771 979
772void inline_size 980/* something about the given fd changed */
981inline_size void
773fd_change (EV_P_ int fd, int flags) 982fd_change (EV_P_ int fd, int flags)
774{ 983{
775 unsigned char reify = anfds [fd].reify; 984 unsigned char reify = anfds [fd].reify;
776 anfds [fd].reify |= flags; 985 anfds [fd].reify |= flags;
777 986
… …
781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 990 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782 fdchanges [fdchangecnt - 1] = fd; 991 fdchanges [fdchangecnt - 1] = fd;
783 } 992 }
784} 993}
785 994
786void inline_speed 995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void
787fd_kill (EV_P_ int fd) 997fd_kill (EV_P_ int fd)
788{ 998{
789 ev_io *w; 999 ev_io *w;
790 1000
791 while ((w = (ev_io *)anfds [fd].head)) 1001 while ((w = (ev_io *)anfds [fd].head))
… …
793 ev_io_stop (EV_A_ w); 1003 ev_io_stop (EV_A_ w);
794 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);
795 } 1005 }
796} 1006}
797 1007
798int inline_size 1008/* check whether the given fd is actually valid, for error recovery */
1009inline_size int
799fd_valid (int fd) 1010fd_valid (int fd)
800{ 1011{
801#ifdef _WIN32 1012#ifdef _WIN32
802 return _get_osfhandle (fd) != -1; 1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
803#else 1014#else
804 return fcntl (fd, F_GETFD) != -1; 1015 return fcntl (fd, F_GETFD) != -1;
805#endif 1016#endif
806} 1017}
807 1018
… …
825 1036
826 for (fd = anfdmax; fd--; ) 1037 for (fd = anfdmax; fd--; )
827 if (anfds [fd].events) 1038 if (anfds [fd].events)
828 { 1039 {
829 fd_kill (EV_A_ fd); 1040 fd_kill (EV_A_ fd);
830 return; 1041 break;
831 } 1042 }
832} 1043}
833 1044
834/* 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 */
835static void noinline 1046static void noinline
… …
840 for (fd = 0; fd < anfdmax; ++fd) 1051 for (fd = 0; fd < anfdmax; ++fd)
841 if (anfds [fd].events) 1052 if (anfds [fd].events)
842 { 1053 {
843 anfds [fd].events = 0; 1054 anfds [fd].events = 0;
844 anfds [fd].emask = 0; 1055 anfds [fd].emask = 0;
845 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1056 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846 } 1057 }
847} 1058}
848 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
849/*****************************************************************************/ 1074/*****************************************************************************/
850 1075
851/* 1076/*
852 * 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
853 * 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
854 * the branching factor of the d-tree. 1079 * the branching factor of the d-tree.
855 */ 1080 */
856 1081
857/* 1082/*
… …
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1091#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1092#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k)) 1093#define UPHEAP_DONE(p,k) ((p) == (k))
869 1094
870/* away from the root */ 1095/* away from the root */
871void inline_speed 1096inline_speed void
872downheap (ANHE *heap, int N, int k) 1097downheap (ANHE *heap, int N, int k)
873{ 1098{
874 ANHE he = heap [k]; 1099 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0; 1100 ANHE *E = heap + N + HEAP0;
876 1101
… …
916#define HEAP0 1 1141#define HEAP0 1
917#define HPARENT(k) ((k) >> 1) 1142#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p)) 1143#define UPHEAP_DONE(p,k) (!(p))
919 1144
920/* away from the root */ 1145/* away from the root */
921void inline_speed 1146inline_speed void
922downheap (ANHE *heap, int N, int k) 1147downheap (ANHE *heap, int N, int k)
923{ 1148{
924 ANHE he = heap [k]; 1149 ANHE he = heap [k];
925 1150
926 for (;;) 1151 for (;;)
927 { 1152 {
928 int c = k << 1; 1153 int c = k << 1;
929 1154
930 if (c > N + HEAP0 - 1) 1155 if (c >= N + HEAP0)
931 break; 1156 break;
932 1157
933 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])
934 ? 1 : 0; 1159 ? 1 : 0;
935 1160
… …
946 ev_active (ANHE_w (he)) = k; 1171 ev_active (ANHE_w (he)) = k;
947} 1172}
948#endif 1173#endif
949 1174
950/* towards the root */ 1175/* towards the root */
951void inline_speed 1176inline_speed void
952upheap (ANHE *heap, int k) 1177upheap (ANHE *heap, int k)
953{ 1178{
954 ANHE he = heap [k]; 1179 ANHE he = heap [k];
955 1180
956 for (;;) 1181 for (;;)
… …
967 1192
968 heap [k] = he; 1193 heap [k] = he;
969 ev_active (ANHE_w (he)) = k; 1194 ev_active (ANHE_w (he)) = k;
970} 1195}
971 1196
972void inline_size 1197/* move an element suitably so it is in a correct place */
1198inline_size void
973adjustheap (ANHE *heap, int N, int k) 1199adjustheap (ANHE *heap, int N, int k)
974{ 1200{
975 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)]))
976 upheap (heap, k); 1202 upheap (heap, k);
977 else 1203 else
978 downheap (heap, N, k); 1204 downheap (heap, N, k);
979} 1205}
980 1206
981/* 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 */
982void inline_size 1208inline_size void
983reheap (ANHE *heap, int N) 1209reheap (ANHE *heap, int N)
984{ 1210{
985 int i; 1211 int i;
986 1212
987 /* 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 */
… …
990 upheap (heap, i + HEAP0); 1216 upheap (heap, i + HEAP0);
991} 1217}
992 1218
993/*****************************************************************************/ 1219/*****************************************************************************/
994 1220
1221/* associate signal watchers to a signal signal */
995typedef struct 1222typedef struct
996{ 1223{
1224 EV_ATOMIC_T pending;
1225#if EV_MULTIPLICITY
1226 EV_P;
1227#endif
997 WL head; 1228 WL head;
998 EV_ATOMIC_T gotsig;
999} ANSIG; 1229} ANSIG;
1000 1230
1001static ANSIG *signals; 1231static ANSIG signals [EV_NSIG - 1];
1002static int signalmax;
1003
1004static EV_ATOMIC_T gotsig;
1005 1232
1006/*****************************************************************************/ 1233/*****************************************************************************/
1007 1234
1008void inline_speed 1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1009fd_intern (int fd)
1010{
1011#ifdef _WIN32
1012 unsigned long arg = 1;
1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1014#else
1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
1016 fcntl (fd, F_SETFL, O_NONBLOCK);
1017#endif
1018}
1019 1236
1020static void noinline 1237static void noinline
1021evpipe_init (EV_P) 1238evpipe_init (EV_P)
1022{ 1239{
1023 if (!ev_is_active (&pipeev)) 1240 if (!ev_is_active (&pipe_w))
1024 { 1241 {
1025#if EV_USE_EVENTFD 1242# if EV_USE_EVENTFD
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL)
1026 if ((evfd = eventfd (0, 0)) >= 0) 1245 evfd = eventfd (0, 0);
1246
1247 if (evfd >= 0)
1027 { 1248 {
1028 evpipe [0] = -1; 1249 evpipe [0] = -1;
1029 fd_intern (evfd); 1250 fd_intern (evfd); /* doing it twice doesn't hurt */
1030 ev_io_set (&pipeev, evfd, EV_READ); 1251 ev_io_set (&pipe_w, evfd, EV_READ);
1031 } 1252 }
1032 else 1253 else
1033#endif 1254# endif
1034 { 1255 {
1035 while (pipe (evpipe)) 1256 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe"); 1257 ev_syserr ("(libev) error creating signal/async pipe");
1037 1258
1038 fd_intern (evpipe [0]); 1259 fd_intern (evpipe [0]);
1039 fd_intern (evpipe [1]); 1260 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ); 1261 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041 } 1262 }
1042 1263
1043 ev_io_start (EV_A_ &pipeev); 1264 ev_io_start (EV_A_ &pipe_w);
1044 ev_unref (EV_A); /* watcher should not keep loop alive */ 1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 } 1266 }
1046} 1267}
1047 1268
1048void inline_size 1269inline_size void
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{ 1271{
1051 if (!*flag) 1272 if (!*flag)
1052 { 1273 {
1053 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;
1054 1276
1055 *flag = 1; 1277 *flag = 1;
1056 1278
1057#if EV_USE_EVENTFD 1279#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1280 if (evfd >= 0)
… …
1060 uint64_t counter = 1; 1282 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t)); 1283 write (evfd, &counter, sizeof (uint64_t));
1062 } 1284 }
1063 else 1285 else
1064#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. */
1065 write (evpipe [1], &old_errno, 1); 1292 write (evpipe [1], &dummy, 1);
1066 1293
1067 errno = old_errno; 1294 errno = old_errno;
1068 } 1295 }
1069} 1296}
1070 1297
1298/* called whenever the libev signal pipe */
1299/* got some events (signal, async) */
1071static void 1300static void
1072pipecb (EV_P_ ev_io *iow, int revents) 1301pipecb (EV_P_ ev_io *iow, int revents)
1073{ 1302{
1303 int i;
1304
1074#if EV_USE_EVENTFD 1305#if EV_USE_EVENTFD
1075 if (evfd >= 0) 1306 if (evfd >= 0)
1076 { 1307 {
1077 uint64_t counter; 1308 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t)); 1309 read (evfd, &counter, sizeof (uint64_t));
1079 } 1310 }
1080 else 1311 else
1081#endif 1312#endif
1082 { 1313 {
1083 char dummy; 1314 char dummy;
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1084 read (evpipe [0], &dummy, 1); 1316 read (evpipe [0], &dummy, 1);
1085 } 1317 }
1086 1318
1087 if (gotsig && ev_is_default_loop (EV_A)) 1319 if (sig_pending)
1088 { 1320 {
1089 int signum; 1321 sig_pending = 0;
1090 gotsig = 0;
1091 1322
1092 for (signum = signalmax; signum--; ) 1323 for (i = EV_NSIG - 1; i--; )
1093 if (signals [signum].gotsig) 1324 if (expect_false (signals [i].pending))
1094 ev_feed_signal_event (EV_A_ signum + 1); 1325 ev_feed_signal_event (EV_A_ i + 1);
1095 } 1326 }
1096 1327
1097#if EV_ASYNC_ENABLE 1328#if EV_ASYNC_ENABLE
1098 if (gotasync) 1329 if (async_pending)
1099 { 1330 {
1100 int i; 1331 async_pending = 0;
1101 gotasync = 0;
1102 1332
1103 for (i = asynccnt; i--; ) 1333 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent) 1334 if (asyncs [i]->sent)
1105 { 1335 {
1106 asyncs [i]->sent = 0; 1336 asyncs [i]->sent = 0;
… …
1114 1344
1115static void 1345static void
1116ev_sighandler (int signum) 1346ev_sighandler (int signum)
1117{ 1347{
1118#if EV_MULTIPLICITY 1348#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct; 1349 EV_P = signals [signum - 1].loop;
1120#endif 1350#endif
1121 1351
1122#if _WIN32 1352#ifdef _WIN32
1123 signal (signum, ev_sighandler); 1353 signal (signum, ev_sighandler);
1124#endif 1354#endif
1125 1355
1126 signals [signum - 1].gotsig = 1; 1356 signals [signum - 1].pending = 1;
1127 evpipe_write (EV_A_ &gotsig); 1357 evpipe_write (EV_A_ &sig_pending);
1128} 1358}
1129 1359
1130void noinline 1360void noinline
1131ev_feed_signal_event (EV_P_ int signum) 1361ev_feed_signal_event (EV_P_ int signum)
1132{ 1362{
1133 WL w; 1363 WL w;
1134 1364
1365 if (expect_false (signum <= 0 || signum > EV_NSIG))
1366 return;
1367
1368 --signum;
1369
1135#if EV_MULTIPLICITY 1370#if EV_MULTIPLICITY
1136 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 */
1137#endif 1372 /* or, likely more useful, feeding a signal nobody is waiting for */
1138 1373
1139 --signum; 1374 if (expect_false (signals [signum].loop != EV_A))
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return; 1375 return;
1376#endif
1143 1377
1144 signals [signum].gotsig = 0; 1378 signals [signum].pending = 0;
1145 1379
1146 for (w = signals [signum].head; w; w = w->next) 1380 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148} 1382}
1149 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
1150/*****************************************************************************/ 1406/*****************************************************************************/
1151 1407
1408#if EV_CHILD_ENABLE
1152static WL childs [EV_PID_HASHSIZE]; 1409static WL childs [EV_PID_HASHSIZE];
1153
1154#ifndef _WIN32
1155 1410
1156static ev_signal childev; 1411static ev_signal childev;
1157 1412
1158#ifndef WIFCONTINUED 1413#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0 1414# define WIFCONTINUED(status) 0
1160#endif 1415#endif
1161 1416
1162void inline_speed 1417/* handle a single child status event */
1418inline_speed void
1163child_reap (EV_P_ int chain, int pid, int status) 1419child_reap (EV_P_ int chain, int pid, int status)
1164{ 1420{
1165 ev_child *w; 1421 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1422 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167 1423
1168 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)
1169 { 1425 {
1170 if ((w->pid == pid || !w->pid) 1426 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1))) 1427 && (!traced || (w->flags & 1)))
1172 { 1428 {
1173 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 */
… …
1180 1436
1181#ifndef WCONTINUED 1437#ifndef WCONTINUED
1182# define WCONTINUED 0 1438# define WCONTINUED 0
1183#endif 1439#endif
1184 1440
1441/* called on sigchld etc., calls waitpid */
1185static void 1442static void
1186childcb (EV_P_ ev_signal *sw, int revents) 1443childcb (EV_P_ ev_signal *sw, int revents)
1187{ 1444{
1188 int pid, status; 1445 int pid, status;
1189 1446
… …
1197 /* 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 */
1198 /* 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 */
1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1456 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1200 1457
1201 child_reap (EV_A_ pid, pid, status); 1458 child_reap (EV_A_ pid, pid, status);
1202 if (EV_PID_HASHSIZE > 1) 1459 if ((EV_PID_HASHSIZE) > 1)
1203 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 */
1204} 1461}
1205 1462
1206#endif 1463#endif
1207 1464
… …
1270 /* kqueue is borked on everything but netbsd apparently */ 1527 /* kqueue is borked on everything but netbsd apparently */
1271 /* 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 */
1272 flags &= ~EVBACKEND_KQUEUE; 1529 flags &= ~EVBACKEND_KQUEUE;
1273#endif 1530#endif
1274#ifdef __APPLE__ 1531#ifdef __APPLE__
1275 // flags &= ~EVBACKEND_KQUEUE; for documentation 1532 /* only select works correctly on that "unix-certified" platform */
1276 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) */
1277#endif 1538#endif
1278 1539
1279 return flags; 1540 return flags;
1280} 1541}
1281 1542
… …
1295ev_backend (EV_P) 1556ev_backend (EV_P)
1296{ 1557{
1297 return backend; 1558 return backend;
1298} 1559}
1299 1560
1561#if EV_FEATURE_API
1300unsigned int 1562unsigned int
1301ev_loop_count (EV_P) 1563ev_iteration (EV_P)
1302{ 1564{
1303 return loop_count; 1565 return loop_count;
1304} 1566}
1305 1567
1568unsigned int
1569ev_depth (EV_P)
1570{
1571 return loop_depth;
1572}
1573
1306void 1574void
1307ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308{ 1576{
1309 io_blocktime = interval; 1577 io_blocktime = interval;
1310} 1578}
… …
1313ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314{ 1582{
1315 timeout_blocktime = interval; 1583 timeout_blocktime = interval;
1316} 1584}
1317 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 */
1318static void noinline 1611static void noinline
1319loop_init (EV_P_ unsigned int flags) 1612loop_init (EV_P_ unsigned int flags)
1320{ 1613{
1321 if (!backend) 1614 if (!backend)
1322 { 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
1323#if EV_USE_MONOTONIC 1626#if EV_USE_MONOTONIC
1627 if (!have_monotonic)
1324 { 1628 {
1325 struct timespec ts; 1629 struct timespec ts;
1630
1326 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1631 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327 have_monotonic = 1; 1632 have_monotonic = 1;
1328 } 1633 }
1329#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"));
1330 1646
1331 ev_rt_now = ev_time (); 1647 ev_rt_now = ev_time ();
1332 mn_now = get_clock (); 1648 mn_now = get_clock ();
1333 now_floor = mn_now; 1649 now_floor = mn_now;
1334 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
1335 1654
1336 io_blocktime = 0.; 1655 io_blocktime = 0.;
1337 timeout_blocktime = 0.; 1656 timeout_blocktime = 0.;
1338 backend = 0; 1657 backend = 0;
1339 backend_fd = -1; 1658 backend_fd = -1;
1340 gotasync = 0; 1659 sig_pending = 0;
1660#if EV_ASYNC_ENABLE
1661 async_pending = 0;
1662#endif
1341#if EV_USE_INOTIFY 1663#if EV_USE_INOTIFY
1342 fs_fd = -2; 1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1343#endif 1665#endif
1344 1666#if EV_USE_SIGNALFD
1345 /* pid check not overridable via env */ 1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1346#ifndef _WIN32
1347 if (flags & EVFLAG_FORKCHECK)
1348 curpid = getpid ();
1349#endif 1668#endif
1350
1351 if (!(flags & EVFLAG_NOENV)
1352 && !enable_secure ()
1353 && getenv ("LIBEV_FLAGS"))
1354 flags = atoi (getenv ("LIBEV_FLAGS"));
1355 1669
1356 if (!(flags & 0x0000ffffU)) 1670 if (!(flags & 0x0000ffffU))
1357 flags |= ev_recommended_backends (); 1671 flags |= ev_recommended_backends ();
1358 1672
1359#if EV_USE_PORT 1673#if EV_USE_PORT
… …
1370#endif 1684#endif
1371#if EV_USE_SELECT 1685#if EV_USE_SELECT
1372 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1686 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373#endif 1687#endif
1374 1688
1689 ev_prepare_init (&pending_w, pendingcb);
1690
1691#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1375 ev_init (&pipeev, pipecb); 1692 ev_init (&pipe_w, pipecb);
1376 ev_set_priority (&pipeev, EV_MAXPRI); 1693 ev_set_priority (&pipe_w, EV_MAXPRI);
1694#endif
1377 } 1695 }
1378} 1696}
1379 1697
1698/* free up a loop structure */
1380static void noinline 1699static void noinline
1381loop_destroy (EV_P) 1700loop_destroy (EV_P)
1382{ 1701{
1383 int i; 1702 int i;
1384 1703
1385 if (ev_is_active (&pipeev)) 1704 if (ev_is_active (&pipe_w))
1386 { 1705 {
1387 ev_ref (EV_A); /* signal watcher */ 1706 /*ev_ref (EV_A);*/
1388 ev_io_stop (EV_A_ &pipeev); 1707 /*ev_io_stop (EV_A_ &pipe_w);*/
1389 1708
1390#if EV_USE_EVENTFD 1709#if EV_USE_EVENTFD
1391 if (evfd >= 0) 1710 if (evfd >= 0)
1392 close (evfd); 1711 close (evfd);
1393#endif 1712#endif
1394 1713
1395 if (evpipe [0] >= 0) 1714 if (evpipe [0] >= 0)
1396 { 1715 {
1397 close (evpipe [0]); 1716 EV_WIN32_CLOSE_FD (evpipe [0]);
1398 close (evpipe [1]); 1717 EV_WIN32_CLOSE_FD (evpipe [1]);
1399 } 1718 }
1400 } 1719 }
1720
1721#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w))
1723 close (sigfd);
1724#endif
1401 1725
1402#if EV_USE_INOTIFY 1726#if EV_USE_INOTIFY
1403 if (fs_fd >= 0) 1727 if (fs_fd >= 0)
1404 close (fs_fd); 1728 close (fs_fd);
1405#endif 1729#endif
… …
1429#if EV_IDLE_ENABLE 1753#if EV_IDLE_ENABLE
1430 array_free (idle, [i]); 1754 array_free (idle, [i]);
1431#endif 1755#endif
1432 } 1756 }
1433 1757
1434 ev_free (anfds); anfdmax = 0; 1758 ev_free (anfds); anfds = 0; anfdmax = 0;
1435 1759
1436 /* 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);
1437 array_free (fdchange, EMPTY); 1762 array_free (fdchange, EMPTY);
1438 array_free (timer, EMPTY); 1763 array_free (timer, EMPTY);
1439#if EV_PERIODIC_ENABLE 1764#if EV_PERIODIC_ENABLE
1440 array_free (periodic, EMPTY); 1765 array_free (periodic, EMPTY);
1441#endif 1766#endif
… …
1450 1775
1451 backend = 0; 1776 backend = 0;
1452} 1777}
1453 1778
1454#if EV_USE_INOTIFY 1779#if EV_USE_INOTIFY
1455void inline_size infy_fork (EV_P); 1780inline_size void infy_fork (EV_P);
1456#endif 1781#endif
1457 1782
1458void inline_size 1783inline_size void
1459loop_fork (EV_P) 1784loop_fork (EV_P)
1460{ 1785{
1461#if EV_USE_PORT 1786#if EV_USE_PORT
1462 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1787 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463#endif 1788#endif
… …
1469#endif 1794#endif
1470#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1471 infy_fork (EV_A); 1796 infy_fork (EV_A);
1472#endif 1797#endif
1473 1798
1474 if (ev_is_active (&pipeev)) 1799 if (ev_is_active (&pipe_w))
1475 { 1800 {
1476 /* this "locks" the handlers against writing to the pipe */ 1801 /* this "locks" the handlers against writing to the pipe */
1477 /* while we modify the fd vars */ 1802 /* while we modify the fd vars */
1478 gotsig = 1; 1803 sig_pending = 1;
1479#if EV_ASYNC_ENABLE 1804#if EV_ASYNC_ENABLE
1480 gotasync = 1; 1805 async_pending = 1;
1481#endif 1806#endif
1482 1807
1483 ev_ref (EV_A); 1808 ev_ref (EV_A);
1484 ev_io_stop (EV_A_ &pipeev); 1809 ev_io_stop (EV_A_ &pipe_w);
1485 1810
1486#if EV_USE_EVENTFD 1811#if EV_USE_EVENTFD
1487 if (evfd >= 0) 1812 if (evfd >= 0)
1488 close (evfd); 1813 close (evfd);
1489#endif 1814#endif
1490 1815
1491 if (evpipe [0] >= 0) 1816 if (evpipe [0] >= 0)
1492 { 1817 {
1493 close (evpipe [0]); 1818 EV_WIN32_CLOSE_FD (evpipe [0]);
1494 close (evpipe [1]); 1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1495 } 1820 }
1496 1821
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1497 evpipe_init (EV_A); 1823 evpipe_init (EV_A);
1498 /* now iterate over everything, in case we missed something */ 1824 /* now iterate over everything, in case we missed something */
1499 pipecb (EV_A_ &pipeev, EV_READ); 1825 pipecb (EV_A_ &pipe_w, EV_READ);
1826#endif
1500 } 1827 }
1501 1828
1502 postfork = 0; 1829 postfork = 0;
1503} 1830}
1504 1831
1505#if EV_MULTIPLICITY 1832#if EV_MULTIPLICITY
1506 1833
1507struct ev_loop * 1834struct ev_loop *
1508ev_loop_new (unsigned int flags) 1835ev_loop_new (unsigned int flags)
1509{ 1836{
1510 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));
1511 1838
1512 memset (loop, 0, sizeof (struct ev_loop)); 1839 memset (EV_A, 0, sizeof (struct ev_loop));
1513
1514 loop_init (EV_A_ flags); 1840 loop_init (EV_A_ flags);
1515 1841
1516 if (ev_backend (EV_A)) 1842 if (ev_backend (EV_A))
1517 return loop; 1843 return EV_A;
1518 1844
1519 return 0; 1845 return 0;
1520} 1846}
1521 1847
1522void 1848void
… …
1529void 1855void
1530ev_loop_fork (EV_P) 1856ev_loop_fork (EV_P)
1531{ 1857{
1532 postfork = 1; /* must be in line with ev_default_fork */ 1858 postfork = 1; /* must be in line with ev_default_fork */
1533} 1859}
1860#endif /* multiplicity */
1534 1861
1535#if EV_VERIFY 1862#if EV_VERIFY
1536static void noinline 1863static void noinline
1537verify_watcher (EV_P_ W w) 1864verify_watcher (EV_P_ W w)
1538{ 1865{
1539 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540 1867
1541 if (w->pending) 1868 if (w->pending)
1542 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));
1543} 1870}
1544 1871
1545static void noinline 1872static void noinline
1546verify_heap (EV_P_ ANHE *heap, int N) 1873verify_heap (EV_P_ ANHE *heap, int N)
1547{ 1874{
1548 int i; 1875 int i;
1549 1876
1550 for (i = HEAP0; i < N + HEAP0; ++i) 1877 for (i = HEAP0; i < N + HEAP0; ++i)
1551 { 1878 {
1552 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));
1553 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])));
1554 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]))));
1555 1882
1556 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557 } 1884 }
1558} 1885}
1559 1886
1560static void noinline 1887static void noinline
1561array_verify (EV_P_ W *ws, int cnt) 1888array_verify (EV_P_ W *ws, int cnt)
1562{ 1889{
1563 while (cnt--) 1890 while (cnt--)
1564 { 1891 {
1565 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566 verify_watcher (EV_A_ ws [cnt]); 1893 verify_watcher (EV_A_ ws [cnt]);
1567 } 1894 }
1568} 1895}
1569#endif 1896#endif
1570 1897
1898#if EV_FEATURE_API
1571void 1899void
1572ev_loop_verify (EV_P) 1900ev_verify (EV_P)
1573{ 1901{
1574#if EV_VERIFY 1902#if EV_VERIFY
1575 int i; 1903 int i;
1576 WL w; 1904 WL w;
1577 1905
1578 assert (activecnt >= -1); 1906 assert (activecnt >= -1);
1579 1907
1580 assert (fdchangemax >= fdchangecnt); 1908 assert (fdchangemax >= fdchangecnt);
1581 for (i = 0; i < fdchangecnt; ++i) 1909 for (i = 0; i < fdchangecnt; ++i)
1582 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583 1911
1584 assert (anfdmax >= 0); 1912 assert (anfdmax >= 0);
1585 for (i = 0; i < anfdmax; ++i) 1913 for (i = 0; i < anfdmax; ++i)
1586 for (w = anfds [i].head; w; w = w->next) 1914 for (w = anfds [i].head; w; w = w->next)
1587 { 1915 {
1588 verify_watcher (EV_A_ (W)w); 1916 verify_watcher (EV_A_ (W)w);
1589 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1590 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));
1591 } 1919 }
1592 1920
1593 assert (timermax >= timercnt); 1921 assert (timermax >= timercnt);
1594 verify_heap (EV_A_ timers, timercnt); 1922 verify_heap (EV_A_ timers, timercnt);
1595 1923
… …
1616#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1617 assert (asyncmax >= asynccnt); 1945 assert (asyncmax >= asynccnt);
1618 array_verify (EV_A_ (W *)asyncs, asynccnt); 1946 array_verify (EV_A_ (W *)asyncs, asynccnt);
1619#endif 1947#endif
1620 1948
1949#if EV_PREPARE_ENABLE
1621 assert (preparemax >= preparecnt); 1950 assert (preparemax >= preparecnt);
1622 array_verify (EV_A_ (W *)prepares, preparecnt); 1951 array_verify (EV_A_ (W *)prepares, preparecnt);
1952#endif
1623 1953
1954#if EV_CHECK_ENABLE
1624 assert (checkmax >= checkcnt); 1955 assert (checkmax >= checkcnt);
1625 array_verify (EV_A_ (W *)checks, checkcnt); 1956 array_verify (EV_A_ (W *)checks, checkcnt);
1957#endif
1626 1958
1627# if 0 1959# if 0
1960#if EV_CHILD_ENABLE
1628 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)
1629 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1962 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1963#endif
1630# endif 1964# endif
1631#endif 1965#endif
1632} 1966}
1633 1967#endif
1634#endif /* multiplicity */
1635 1968
1636#if EV_MULTIPLICITY 1969#if EV_MULTIPLICITY
1637struct ev_loop * 1970struct ev_loop *
1638ev_default_loop_init (unsigned int flags) 1971ev_default_loop_init (unsigned int flags)
1639#else 1972#else
… …
1642#endif 1975#endif
1643{ 1976{
1644 if (!ev_default_loop_ptr) 1977 if (!ev_default_loop_ptr)
1645 { 1978 {
1646#if EV_MULTIPLICITY 1979#if EV_MULTIPLICITY
1647 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1980 EV_P = ev_default_loop_ptr = &default_loop_struct;
1648#else 1981#else
1649 ev_default_loop_ptr = 1; 1982 ev_default_loop_ptr = 1;
1650#endif 1983#endif
1651 1984
1652 loop_init (EV_A_ flags); 1985 loop_init (EV_A_ flags);
1653 1986
1654 if (ev_backend (EV_A)) 1987 if (ev_backend (EV_A))
1655 { 1988 {
1656#ifndef _WIN32 1989#if EV_CHILD_ENABLE
1657 ev_signal_init (&childev, childcb, SIGCHLD); 1990 ev_signal_init (&childev, childcb, SIGCHLD);
1658 ev_set_priority (&childev, EV_MAXPRI); 1991 ev_set_priority (&childev, EV_MAXPRI);
1659 ev_signal_start (EV_A_ &childev); 1992 ev_signal_start (EV_A_ &childev);
1660 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1993 ev_unref (EV_A); /* child watcher should not keep loop alive */
1661#endif 1994#endif
… …
1669 2002
1670void 2003void
1671ev_default_destroy (void) 2004ev_default_destroy (void)
1672{ 2005{
1673#if EV_MULTIPLICITY 2006#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr; 2007 EV_P = ev_default_loop_ptr;
1675#endif 2008#endif
1676 2009
1677 ev_default_loop_ptr = 0; 2010 ev_default_loop_ptr = 0;
1678 2011
1679#ifndef _WIN32 2012#if EV_CHILD_ENABLE
1680 ev_ref (EV_A); /* child watcher */ 2013 ev_ref (EV_A); /* child watcher */
1681 ev_signal_stop (EV_A_ &childev); 2014 ev_signal_stop (EV_A_ &childev);
1682#endif 2015#endif
1683 2016
1684 loop_destroy (EV_A); 2017 loop_destroy (EV_A);
… …
1686 2019
1687void 2020void
1688ev_default_fork (void) 2021ev_default_fork (void)
1689{ 2022{
1690#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1691 struct ev_loop *loop = ev_default_loop_ptr; 2024 EV_P = ev_default_loop_ptr;
1692#endif 2025#endif
1693 2026
1694 postfork = 1; /* must be in line with ev_loop_fork */ 2027 postfork = 1; /* must be in line with ev_loop_fork */
1695} 2028}
1696 2029
… …
1700ev_invoke (EV_P_ void *w, int revents) 2033ev_invoke (EV_P_ void *w, int revents)
1701{ 2034{
1702 EV_CB_INVOKE ((W)w, revents); 2035 EV_CB_INVOKE ((W)w, revents);
1703} 2036}
1704 2037
1705void inline_speed 2038unsigned int
1706call_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)
1707{ 2052{
1708 int pri; 2053 int pri;
1709 2054
1710 for (pri = NUMPRI; pri--; ) 2055 for (pri = NUMPRI; pri--; )
1711 while (pendingcnt [pri]) 2056 while (pendingcnt [pri])
1712 { 2057 {
1713 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714 2059
1715 if (expect_true (p->w))
1716 {
1717 /*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 */
1718 2062
1719 p->w->pending = 0; 2063 p->w->pending = 0;
1720 EV_CB_INVOKE (p->w, p->events); 2064 EV_CB_INVOKE (p->w, p->events);
1721 EV_FREQUENT_CHECK; 2065 EV_FREQUENT_CHECK;
1722 }
1723 } 2066 }
1724} 2067}
1725 2068
1726#if EV_IDLE_ENABLE 2069#if EV_IDLE_ENABLE
1727void inline_size 2070/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */
2072inline_size void
1728idle_reify (EV_P) 2073idle_reify (EV_P)
1729{ 2074{
1730 if (expect_false (idleall)) 2075 if (expect_false (idleall))
1731 { 2076 {
1732 int pri; 2077 int pri;
… …
1744 } 2089 }
1745 } 2090 }
1746} 2091}
1747#endif 2092#endif
1748 2093
1749void inline_size 2094/* make timers pending */
2095inline_size void
1750timers_reify (EV_P) 2096timers_reify (EV_P)
1751{ 2097{
1752 EV_FREQUENT_CHECK; 2098 EV_FREQUENT_CHECK;
1753 2099
1754 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2100 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755 { 2101 {
1756 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2102 do
1757
1758 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760 /* first reschedule or stop timer */
1761 if (w->repeat)
1762 { 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 {
1763 ev_at (w) += w->repeat; 2111 ev_at (w) += w->repeat;
1764 if (ev_at (w) < mn_now) 2112 if (ev_at (w) < mn_now)
1765 ev_at (w) = mn_now; 2113 ev_at (w) = mn_now;
1766 2114
1767 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.));
1768 2116
1769 ANHE_at_cache (timers [HEAP0]); 2117 ANHE_at_cache (timers [HEAP0]);
1770 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);
1771 } 2125 }
1772 else 2126 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774 2127
1775 EV_FREQUENT_CHECK; 2128 feed_reverse_done (EV_A_ EV_TIMER);
1776 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1777 } 2129 }
1778} 2130}
1779 2131
1780#if EV_PERIODIC_ENABLE 2132#if EV_PERIODIC_ENABLE
1781void inline_size 2133/* make periodics pending */
2134inline_size void
1782periodics_reify (EV_P) 2135periodics_reify (EV_P)
1783{ 2136{
1784 EV_FREQUENT_CHECK; 2137 EV_FREQUENT_CHECK;
1785 2138
1786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787 { 2140 {
1788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2141 int feed_count = 0;
1789 2142
1790 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2143 do
1791
1792 /* first reschedule or stop timer */
1793 if (w->reschedule_cb)
1794 { 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 {
1795 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2152 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796 2153
1797 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));
1798 2155
1799 ANHE_at_cache (periodics [HEAP0]); 2156 ANHE_at_cache (periodics [HEAP0]);
1800 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);
1801 } 2183 }
1802 else if (w->interval) 2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1803 {
1804 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805 /* if next trigger time is not sufficiently in the future, put it there */
1806 /* this might happen because of floating point inexactness */
1807 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808 {
1809 ev_at (w) += w->interval;
1810 2185
1811 /* if interval is unreasonably low we might still have a time in the past */
1812 /* so correct this. this will make the periodic very inexact, but the user */
1813 /* has effectively asked to get triggered more often than possible */
1814 if (ev_at (w) < ev_rt_now)
1815 ev_at (w) = ev_rt_now;
1816 }
1817
1818 ANHE_at_cache (periodics [HEAP0]);
1819 downheap (periodics, periodiccnt, HEAP0);
1820 }
1821 else
1822 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824 EV_FREQUENT_CHECK;
1825 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2186 feed_reverse_done (EV_A_ EV_PERIODIC);
1826 } 2187 }
1827} 2188}
1828 2189
2190/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */
1829static void noinline 2192static void noinline
1830periodics_reschedule (EV_P) 2193periodics_reschedule (EV_P)
1831{ 2194{
1832 int i; 2195 int i;
1833 2196
… …
1846 2209
1847 reheap (periodics, periodiccnt); 2210 reheap (periodics, periodiccnt);
1848} 2211}
1849#endif 2212#endif
1850 2213
1851void 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
1852time_update (EV_P_ ev_tstamp max_block) 2231time_update (EV_P_ ev_tstamp max_block)
1853{ 2232{
1854 int i;
1855
1856#if EV_USE_MONOTONIC 2233#if EV_USE_MONOTONIC
1857 if (expect_true (have_monotonic)) 2234 if (expect_true (have_monotonic))
1858 { 2235 {
2236 int i;
1859 ev_tstamp odiff = rtmn_diff; 2237 ev_tstamp odiff = rtmn_diff;
1860 2238
1861 mn_now = get_clock (); 2239 mn_now = get_clock ();
1862 2240
1863 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2241 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1889 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1890 mn_now = get_clock (); 2268 mn_now = get_clock ();
1891 now_floor = mn_now; 2269 now_floor = mn_now;
1892 } 2270 }
1893 2271
2272 /* no timer adjustment, as the monotonic clock doesn't jump */
2273 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894# if EV_PERIODIC_ENABLE 2274# if EV_PERIODIC_ENABLE
1895 periodics_reschedule (EV_A); 2275 periodics_reschedule (EV_A);
1896# endif 2276# endif
1897 /* no timer adjustment, as the monotonic clock doesn't jump */
1898 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899 } 2277 }
1900 else 2278 else
1901#endif 2279#endif
1902 { 2280 {
1903 ev_rt_now = ev_time (); 2281 ev_rt_now = ev_time ();
1904 2282
1905 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))
1906 { 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);
1907#if EV_PERIODIC_ENABLE 2287#if EV_PERIODIC_ENABLE
1908 periodics_reschedule (EV_A); 2288 periodics_reschedule (EV_A);
1909#endif 2289#endif
1910 /* adjust timers. this is easy, as the offset is the same for all of them */
1911 for (i = 0; i < timercnt; ++i)
1912 {
1913 ANHE *he = timers + i + HEAP0;
1914 ANHE_w (*he)->at += ev_rt_now - mn_now;
1915 ANHE_at_cache (*he);
1916 }
1917 } 2290 }
1918 2291
1919 mn_now = ev_rt_now; 2292 mn_now = ev_rt_now;
1920 } 2293 }
1921} 2294}
1922 2295
1923void 2296void
1924ev_ref (EV_P)
1925{
1926 ++activecnt;
1927}
1928
1929void
1930ev_unref (EV_P)
1931{
1932 --activecnt;
1933}
1934
1935void
1936ev_now_update (EV_P)
1937{
1938 time_update (EV_A_ 1e100);
1939}
1940
1941static int loop_done;
1942
1943void
1944ev_loop (EV_P_ int flags) 2297ev_loop (EV_P_ int flags)
1945{ 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
1946 loop_done = EVUNLOOP_CANCEL; 2305 loop_done = EVUNLOOP_CANCEL;
1947 2306
1948 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 */
1949 2308
1950 do 2309 do
1951 { 2310 {
1952#if EV_VERIFY >= 2 2311#if EV_VERIFY >= 2
1953 ev_loop_verify (EV_A); 2312 ev_verify (EV_A);
1954#endif 2313#endif
1955 2314
1956#ifndef _WIN32 2315#ifndef _WIN32
1957 if (expect_false (curpid)) /* penalise the forking check even more */ 2316 if (expect_false (curpid)) /* penalise the forking check even more */
1958 if (expect_false (getpid () != curpid)) 2317 if (expect_false (getpid () != curpid))
… …
1966 /* we might have forked, so queue fork handlers */ 2325 /* we might have forked, so queue fork handlers */
1967 if (expect_false (postfork)) 2326 if (expect_false (postfork))
1968 if (forkcnt) 2327 if (forkcnt)
1969 { 2328 {
1970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2329 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971 call_pending (EV_A); 2330 EV_INVOKE_PENDING;
1972 } 2331 }
1973#endif 2332#endif
1974 2333
2334#if EV_PREPARE_ENABLE
1975 /* queue prepare watchers (and execute them) */ 2335 /* queue prepare watchers (and execute them) */
1976 if (expect_false (preparecnt)) 2336 if (expect_false (preparecnt))
1977 { 2337 {
1978 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2338 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979 call_pending (EV_A); 2339 EV_INVOKE_PENDING;
1980 } 2340 }
2341#endif
1981 2342
1982 if (expect_false (!activecnt)) 2343 if (expect_false (loop_done))
1983 break; 2344 break;
1984 2345
1985 /* we might have forked, so reify kernel state if necessary */ 2346 /* we might have forked, so reify kernel state if necessary */
1986 if (expect_false (postfork)) 2347 if (expect_false (postfork))
1987 loop_fork (EV_A); 2348 loop_fork (EV_A);
… …
1994 ev_tstamp waittime = 0.; 2355 ev_tstamp waittime = 0.;
1995 ev_tstamp sleeptime = 0.; 2356 ev_tstamp sleeptime = 0.;
1996 2357
1997 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1998 { 2359 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
1999 /* update time to cancel out callback processing overhead */ 2363 /* update time to cancel out callback processing overhead */
2000 time_update (EV_A_ 1e100); 2364 time_update (EV_A_ 1e100);
2001 2365
2002 waittime = MAX_BLOCKTIME; 2366 waittime = MAX_BLOCKTIME;
2003 2367
… …
2013 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;
2014 if (waittime > to) waittime = to; 2378 if (waittime > to) waittime = to;
2015 } 2379 }
2016#endif 2380#endif
2017 2381
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */
2018 if (expect_false (waittime < timeout_blocktime)) 2383 if (expect_false (waittime < timeout_blocktime))
2019 waittime = timeout_blocktime; 2384 waittime = timeout_blocktime;
2020 2385
2021 sleeptime = waittime - backend_fudge; 2386 /* extra check because io_blocktime is commonly 0 */
2022
2023 if (expect_true (sleeptime > io_blocktime)) 2387 if (expect_false (io_blocktime))
2024 sleeptime = io_blocktime;
2025
2026 if (sleeptime)
2027 { 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 {
2028 ev_sleep (sleeptime); 2396 ev_sleep (sleeptime);
2029 waittime -= sleeptime; 2397 waittime -= sleeptime;
2398 }
2030 } 2399 }
2031 } 2400 }
2032 2401
2402#if EV_FEATURE_API
2033 ++loop_count; 2403 ++loop_count;
2404#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2034 backend_poll (EV_A_ waittime); 2406 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2035 2408
2036 /* update ev_rt_now, do magic */ 2409 /* update ev_rt_now, do magic */
2037 time_update (EV_A_ waittime + sleeptime); 2410 time_update (EV_A_ waittime + sleeptime);
2038 } 2411 }
2039 2412
… …
2046#if EV_IDLE_ENABLE 2419#if EV_IDLE_ENABLE
2047 /* queue idle watchers unless other events are pending */ 2420 /* queue idle watchers unless other events are pending */
2048 idle_reify (EV_A); 2421 idle_reify (EV_A);
2049#endif 2422#endif
2050 2423
2424#if EV_CHECK_ENABLE
2051 /* queue check watchers, to be executed first */ 2425 /* queue check watchers, to be executed first */
2052 if (expect_false (checkcnt)) 2426 if (expect_false (checkcnt))
2053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2427 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2428#endif
2054 2429
2055 call_pending (EV_A); 2430 EV_INVOKE_PENDING;
2056 } 2431 }
2057 while (expect_true ( 2432 while (expect_true (
2058 activecnt 2433 activecnt
2059 && !loop_done 2434 && !loop_done
2060 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2061 )); 2436 ));
2062 2437
2063 if (loop_done == EVUNLOOP_ONE) 2438 if (loop_done == EVUNLOOP_ONE)
2064 loop_done = EVUNLOOP_CANCEL; 2439 loop_done = EVUNLOOP_CANCEL;
2440
2441#if EV_FEATURE_API
2442 --loop_depth;
2443#endif
2065} 2444}
2066 2445
2067void 2446void
2068ev_unloop (EV_P_ int how) 2447ev_unloop (EV_P_ int how)
2069{ 2448{
2070 loop_done = how; 2449 loop_done = how;
2071} 2450}
2072 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
2073/*****************************************************************************/ 2489/*****************************************************************************/
2490/* singly-linked list management, used when the expected list length is short */
2074 2491
2075void inline_size 2492inline_size void
2076wlist_add (WL *head, WL elem) 2493wlist_add (WL *head, WL elem)
2077{ 2494{
2078 elem->next = *head; 2495 elem->next = *head;
2079 *head = elem; 2496 *head = elem;
2080} 2497}
2081 2498
2082void inline_size 2499inline_size void
2083wlist_del (WL *head, WL elem) 2500wlist_del (WL *head, WL elem)
2084{ 2501{
2085 while (*head) 2502 while (*head)
2086 { 2503 {
2087 if (*head == elem) 2504 if (expect_true (*head == elem))
2088 { 2505 {
2089 *head = elem->next; 2506 *head = elem->next;
2090 return; 2507 break;
2091 } 2508 }
2092 2509
2093 head = &(*head)->next; 2510 head = &(*head)->next;
2094 } 2511 }
2095} 2512}
2096 2513
2097void inline_speed 2514/* internal, faster, version of ev_clear_pending */
2515inline_speed void
2098clear_pending (EV_P_ W w) 2516clear_pending (EV_P_ W w)
2099{ 2517{
2100 if (w->pending) 2518 if (w->pending)
2101 { 2519 {
2102 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2520 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103 w->pending = 0; 2521 w->pending = 0;
2104 } 2522 }
2105} 2523}
2106 2524
2107int 2525int
… …
2111 int pending = w_->pending; 2529 int pending = w_->pending;
2112 2530
2113 if (expect_true (pending)) 2531 if (expect_true (pending))
2114 { 2532 {
2115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2533 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2534 p->w = (W)&pending_w;
2116 w_->pending = 0; 2535 w_->pending = 0;
2117 p->w = 0;
2118 return p->events; 2536 return p->events;
2119 } 2537 }
2120 else 2538 else
2121 return 0; 2539 return 0;
2122} 2540}
2123 2541
2124void inline_size 2542inline_size void
2125pri_adjust (EV_P_ W w) 2543pri_adjust (EV_P_ W w)
2126{ 2544{
2127 int pri = w->priority; 2545 int pri = ev_priority (w);
2128 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2546 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2547 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130 w->priority = pri; 2548 ev_set_priority (w, pri);
2131} 2549}
2132 2550
2133void inline_speed 2551inline_speed void
2134ev_start (EV_P_ W w, int active) 2552ev_start (EV_P_ W w, int active)
2135{ 2553{
2136 pri_adjust (EV_A_ w); 2554 pri_adjust (EV_A_ w);
2137 w->active = active; 2555 w->active = active;
2138 ev_ref (EV_A); 2556 ev_ref (EV_A);
2139} 2557}
2140 2558
2141void inline_size 2559inline_size void
2142ev_stop (EV_P_ W w) 2560ev_stop (EV_P_ W w)
2143{ 2561{
2144 ev_unref (EV_A); 2562 ev_unref (EV_A);
2145 w->active = 0; 2563 w->active = 0;
2146} 2564}
… …
2153 int fd = w->fd; 2571 int fd = w->fd;
2154 2572
2155 if (expect_false (ev_is_active (w))) 2573 if (expect_false (ev_is_active (w)))
2156 return; 2574 return;
2157 2575
2158 assert (("ev_io_start called with negative fd", fd >= 0)); 2576 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2159 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2577 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160 2578
2161 EV_FREQUENT_CHECK; 2579 EV_FREQUENT_CHECK;
2162 2580
2163 ev_start (EV_A_ (W)w, 1); 2581 ev_start (EV_A_ (W)w, 1);
2164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165 wlist_add (&anfds[fd].head, (WL)w); 2583 wlist_add (&anfds[fd].head, (WL)w);
2166 2584
2167 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2168 w->events &= ~EV_IOFDSET; 2586 w->events &= ~EV__IOFDSET;
2169 2587
2170 EV_FREQUENT_CHECK; 2588 EV_FREQUENT_CHECK;
2171} 2589}
2172 2590
2173void noinline 2591void noinline
… …
2175{ 2593{
2176 clear_pending (EV_A_ (W)w); 2594 clear_pending (EV_A_ (W)w);
2177 if (expect_false (!ev_is_active (w))) 2595 if (expect_false (!ev_is_active (w)))
2178 return; 2596 return;
2179 2597
2180 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));
2181 2599
2182 EV_FREQUENT_CHECK; 2600 EV_FREQUENT_CHECK;
2183 2601
2184 wlist_del (&anfds[w->fd].head, (WL)w); 2602 wlist_del (&anfds[w->fd].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 2603 ev_stop (EV_A_ (W)w);
2186 2604
2187 fd_change (EV_A_ w->fd, 1); 2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2188 2606
2189 EV_FREQUENT_CHECK; 2607 EV_FREQUENT_CHECK;
2190} 2608}
2191 2609
2192void noinline 2610void noinline
… …
2195 if (expect_false (ev_is_active (w))) 2613 if (expect_false (ev_is_active (w)))
2196 return; 2614 return;
2197 2615
2198 ev_at (w) += mn_now; 2616 ev_at (w) += mn_now;
2199 2617
2200 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.));
2201 2619
2202 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2203 2621
2204 ++timercnt; 2622 ++timercnt;
2205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2623 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2208 ANHE_at_cache (timers [ev_active (w)]); 2626 ANHE_at_cache (timers [ev_active (w)]);
2209 upheap (timers, ev_active (w)); 2627 upheap (timers, ev_active (w));
2210 2628
2211 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2212 2630
2213 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214} 2632}
2215 2633
2216void noinline 2634void noinline
2217ev_timer_stop (EV_P_ ev_timer *w) 2635ev_timer_stop (EV_P_ ev_timer *w)
2218{ 2636{
… …
2223 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2224 2642
2225 { 2643 {
2226 int active = ev_active (w); 2644 int active = ev_active (w);
2227 2645
2228 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2646 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229 2647
2230 --timercnt; 2648 --timercnt;
2231 2649
2232 if (expect_true (active < timercnt + HEAP0)) 2650 if (expect_true (active < timercnt + HEAP0))
2233 { 2651 {
2234 timers [active] = timers [timercnt + HEAP0]; 2652 timers [active] = timers [timercnt + HEAP0];
2235 adjustheap (timers, timercnt, active); 2653 adjustheap (timers, timercnt, active);
2236 } 2654 }
2237 } 2655 }
2238 2656
2239 EV_FREQUENT_CHECK;
2240
2241 ev_at (w) -= mn_now; 2657 ev_at (w) -= mn_now;
2242 2658
2243 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
2660
2661 EV_FREQUENT_CHECK;
2244} 2662}
2245 2663
2246void noinline 2664void noinline
2247ev_timer_again (EV_P_ ev_timer *w) 2665ev_timer_again (EV_P_ ev_timer *w)
2248{ 2666{
… …
2266 } 2684 }
2267 2685
2268 EV_FREQUENT_CHECK; 2686 EV_FREQUENT_CHECK;
2269} 2687}
2270 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
2271#if EV_PERIODIC_ENABLE 2695#if EV_PERIODIC_ENABLE
2272void noinline 2696void noinline
2273ev_periodic_start (EV_P_ ev_periodic *w) 2697ev_periodic_start (EV_P_ ev_periodic *w)
2274{ 2698{
2275 if (expect_false (ev_is_active (w))) 2699 if (expect_false (ev_is_active (w)))
… …
2277 2701
2278 if (w->reschedule_cb) 2702 if (w->reschedule_cb)
2279 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280 else if (w->interval) 2704 else if (w->interval)
2281 { 2705 {
2282 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.));
2283 /* 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 */
2284 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;
2285 } 2709 }
2286 else 2710 else
2287 ev_at (w) = w->offset; 2711 ev_at (w) = w->offset;
… …
2295 ANHE_at_cache (periodics [ev_active (w)]); 2719 ANHE_at_cache (periodics [ev_active (w)]);
2296 upheap (periodics, ev_active (w)); 2720 upheap (periodics, ev_active (w));
2297 2721
2298 EV_FREQUENT_CHECK; 2722 EV_FREQUENT_CHECK;
2299 2723
2300 /*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));*/
2301} 2725}
2302 2726
2303void noinline 2727void noinline
2304ev_periodic_stop (EV_P_ ev_periodic *w) 2728ev_periodic_stop (EV_P_ ev_periodic *w)
2305{ 2729{
… …
2310 EV_FREQUENT_CHECK; 2734 EV_FREQUENT_CHECK;
2311 2735
2312 { 2736 {
2313 int active = ev_active (w); 2737 int active = ev_active (w);
2314 2738
2315 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2739 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316 2740
2317 --periodiccnt; 2741 --periodiccnt;
2318 2742
2319 if (expect_true (active < periodiccnt + HEAP0)) 2743 if (expect_true (active < periodiccnt + HEAP0))
2320 { 2744 {
2321 periodics [active] = periodics [periodiccnt + HEAP0]; 2745 periodics [active] = periodics [periodiccnt + HEAP0];
2322 adjustheap (periodics, periodiccnt, active); 2746 adjustheap (periodics, periodiccnt, active);
2323 } 2747 }
2324 } 2748 }
2325 2749
2326 EV_FREQUENT_CHECK;
2327
2328 ev_stop (EV_A_ (W)w); 2750 ev_stop (EV_A_ (W)w);
2751
2752 EV_FREQUENT_CHECK;
2329} 2753}
2330 2754
2331void noinline 2755void noinline
2332ev_periodic_again (EV_P_ ev_periodic *w) 2756ev_periodic_again (EV_P_ ev_periodic *w)
2333{ 2757{
… …
2339 2763
2340#ifndef SA_RESTART 2764#ifndef SA_RESTART
2341# define SA_RESTART 0 2765# define SA_RESTART 0
2342#endif 2766#endif
2343 2767
2768#if EV_SIGNAL_ENABLE
2769
2344void noinline 2770void noinline
2345ev_signal_start (EV_P_ ev_signal *w) 2771ev_signal_start (EV_P_ ev_signal *w)
2346{ 2772{
2347#if EV_MULTIPLICITY
2348 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349#endif
2350 if (expect_false (ev_is_active (w))) 2773 if (expect_false (ev_is_active (w)))
2351 return; 2774 return;
2352 2775
2353 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));
2354 2777
2355 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));
2356 2781
2357 EV_FREQUENT_CHECK; 2782 signals [w->signum - 1].loop = EV_A;
2783#endif
2358 2784
2785 EV_FREQUENT_CHECK;
2786
2787#if EV_USE_SIGNALFD
2788 if (sigfd == -2)
2359 { 2789 {
2360#ifndef _WIN32 2790 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2361 sigset_t full, prev; 2791 if (sigfd < 0 && errno == EINVAL)
2362 sigfillset (&full); 2792 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2363 sigprocmask (SIG_SETMASK, &full, &prev);
2364#endif
2365 2793
2366 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2794 if (sigfd >= 0)
2795 {
2796 fd_intern (sigfd); /* doing it twice will not hurt */
2367 2797
2368#ifndef _WIN32 2798 sigemptyset (&sigfd_set);
2369 sigprocmask (SIG_SETMASK, &prev, 0); 2799
2370#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 }
2371 } 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
2372 2816
2373 ev_start (EV_A_ (W)w, 1); 2817 ev_start (EV_A_ (W)w, 1);
2374 wlist_add (&signals [w->signum - 1].head, (WL)w); 2818 wlist_add (&signals [w->signum - 1].head, (WL)w);
2375 2819
2376 if (!((WL)w)->next) 2820 if (!((WL)w)->next)
2821# if EV_USE_SIGNALFD
2822 if (sigfd < 0) /*TODO*/
2823# endif
2377 { 2824 {
2378#if _WIN32 2825# ifdef _WIN32
2826 evpipe_init (EV_A);
2827
2379 signal (w->signum, ev_sighandler); 2828 signal (w->signum, ev_sighandler);
2380#else 2829# else
2381 struct sigaction sa; 2830 struct sigaction sa;
2831
2832 evpipe_init (EV_A);
2833
2382 sa.sa_handler = ev_sighandler; 2834 sa.sa_handler = ev_sighandler;
2383 sigfillset (&sa.sa_mask); 2835 sigfillset (&sa.sa_mask);
2384 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 */
2385 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);
2386#endif 2842#endif
2387 } 2843 }
2388 2844
2389 EV_FREQUENT_CHECK; 2845 EV_FREQUENT_CHECK;
2390} 2846}
2391 2847
2392void noinline 2848void noinline
… …
2400 2856
2401 wlist_del (&signals [w->signum - 1].head, (WL)w); 2857 wlist_del (&signals [w->signum - 1].head, (WL)w);
2402 ev_stop (EV_A_ (W)w); 2858 ev_stop (EV_A_ (W)w);
2403 2859
2404 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
2405 signal (w->signum, SIG_DFL); 2879 signal (w->signum, SIG_DFL);
2880 }
2406 2881
2407 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
2408} 2883}
2884
2885#endif
2886
2887#if EV_CHILD_ENABLE
2409 2888
2410void 2889void
2411ev_child_start (EV_P_ ev_child *w) 2890ev_child_start (EV_P_ ev_child *w)
2412{ 2891{
2413#if EV_MULTIPLICITY 2892#if EV_MULTIPLICITY
2414 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));
2415#endif 2894#endif
2416 if (expect_false (ev_is_active (w))) 2895 if (expect_false (ev_is_active (w)))
2417 return; 2896 return;
2418 2897
2419 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2420 2899
2421 ev_start (EV_A_ (W)w, 1); 2900 ev_start (EV_A_ (W)w, 1);
2422 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2423 2902
2424 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2425} 2904}
2426 2905
2427void 2906void
… …
2431 if (expect_false (!ev_is_active (w))) 2910 if (expect_false (!ev_is_active (w)))
2432 return; 2911 return;
2433 2912
2434 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2435 2914
2436 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2915 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2437 ev_stop (EV_A_ (W)w); 2916 ev_stop (EV_A_ (W)w);
2438 2917
2439 EV_FREQUENT_CHECK; 2918 EV_FREQUENT_CHECK;
2440} 2919}
2920
2921#endif
2441 2922
2442#if EV_STAT_ENABLE 2923#if EV_STAT_ENABLE
2443 2924
2444# ifdef _WIN32 2925# ifdef _WIN32
2445# undef lstat 2926# undef lstat
… …
2451#define MIN_STAT_INTERVAL 0.1074891 2932#define MIN_STAT_INTERVAL 0.1074891
2452 2933
2453static 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);
2454 2935
2455#if EV_USE_INOTIFY 2936#if EV_USE_INOTIFY
2456# 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)
2457 2940
2458static void noinline 2941static void noinline
2459infy_add (EV_P_ ev_stat *w) 2942infy_add (EV_P_ ev_stat *w)
2460{ 2943{
2461 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);
2462 2945
2463 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 */
2464 { 2966 }
2967 else
2968 {
2969 /* can't use inotify, continue to stat */
2465 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2970 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2466 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2467 2971
2468 /* monitor some parent directory for speedup hints */ 2972 /* if path is not there, monitor some parent directory for speedup hints */
2469 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2973 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2470 /* but an efficiency issue only */ 2974 /* but an efficiency issue only */
2471 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2975 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2472 { 2976 {
2473 char path [4096]; 2977 char path [4096];
… …
2489 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2490 } 2994 }
2491 } 2995 }
2492 2996
2493 if (w->wd >= 0) 2997 if (w->wd >= 0)
2494 {
2495 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);
2496 2999
2497 /* now local changes will be tracked by inotify, but remote changes won't */ 3000 /* now re-arm timer, if required */
2498 /* unless the filesystem it known to be local, we therefore still poll */ 3001 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2499 /* also do poll on <2.6.25, but with normal frequency */
2500 struct statfs sfs;
2501
2502 if (fs_2625 && !statfs (w->path, &sfs))
2503 if (sfs.f_type == 0x1373 /* devfs */
2504 || sfs.f_type == 0xEF53 /* ext2/3 */
2505 || sfs.f_type == 0x3153464a /* jfs */
2506 || sfs.f_type == 0x52654973 /* reiser3 */
2507 || sfs.f_type == 0x01021994 /* tempfs */
2508 || sfs.f_type == 0x58465342 /* xfs */)
2509 return;
2510
2511 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2512 ev_timer_again (EV_A_ &w->timer); 3002 ev_timer_again (EV_A_ &w->timer);
2513 } 3003 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2514} 3004}
2515 3005
2516static void noinline 3006static void noinline
2517infy_del (EV_P_ ev_stat *w) 3007infy_del (EV_P_ ev_stat *w)
2518{ 3008{
… …
2521 3011
2522 if (wd < 0) 3012 if (wd < 0)
2523 return; 3013 return;
2524 3014
2525 w->wd = -2; 3015 w->wd = -2;
2526 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3016 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2527 wlist_del (&fs_hash [slot].head, (WL)w); 3017 wlist_del (&fs_hash [slot].head, (WL)w);
2528 3018
2529 /* remove this watcher, if others are watching it, they will rearm */ 3019 /* remove this watcher, if others are watching it, they will rearm */
2530 inotify_rm_watch (fs_fd, wd); 3020 inotify_rm_watch (fs_fd, wd);
2531} 3021}
… …
2533static void noinline 3023static void noinline
2534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2535{ 3025{
2536 if (slot < 0) 3026 if (slot < 0)
2537 /* overflow, need to check for all hash slots */ 3027 /* overflow, need to check for all hash slots */
2538 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2539 infy_wd (EV_A_ slot, wd, ev); 3029 infy_wd (EV_A_ slot, wd, ev);
2540 else 3030 else
2541 { 3031 {
2542 WL w_; 3032 WL w_;
2543 3033
2544 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3034 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2545 { 3035 {
2546 ev_stat *w = (ev_stat *)w_; 3036 ev_stat *w = (ev_stat *)w_;
2547 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 */
2548 3038
2549 if (w->wd == wd || wd == -1) 3039 if (w->wd == wd || wd == -1)
2550 { 3040 {
2551 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3041 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2552 { 3042 {
2553 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3043 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2554 w->wd = -1; 3044 w->wd = -1;
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3045 infy_add (EV_A_ w); /* re-add, no matter what */
2556 } 3046 }
2557 3047
2558 stat_timer_cb (EV_A_ &w->timer, 0); 3048 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2563 3053
2564static void 3054static void
2565infy_cb (EV_P_ ev_io *w, int revents) 3055infy_cb (EV_P_ ev_io *w, int revents)
2566{ 3056{
2567 char buf [EV_INOTIFY_BUFSIZE]; 3057 char buf [EV_INOTIFY_BUFSIZE];
2568 struct inotify_event *ev = (struct inotify_event *)buf;
2569 int ofs; 3058 int ofs;
2570 int len = read (fs_fd, buf, sizeof (buf)); 3059 int len = read (fs_fd, buf, sizeof (buf));
2571 3060
2572 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);
2573 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 }
2574} 3067}
2575 3068
2576void inline_size 3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
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
2577check_2625 (EV_P) 3102ev_check_2625 (EV_P)
2578{ 3103{
2579 /* kernels < 2.6.25 are borked 3104 /* kernels < 2.6.25 are borked
2580 * 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
2581 */ 3106 */
2582 struct utsname buf; 3107 if (ev_linux_version () < 0x020619)
2583 int major, minor, micro;
2584
2585 if (uname (&buf))
2586 return; 3108 return;
2587 3109
2588 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2589 return;
2590
2591 if (major < 2
2592 || (major == 2 && minor < 6)
2593 || (major == 2 && minor == 6 && micro < 25))
2594 return;
2595
2596 fs_2625 = 1; 3110 fs_2625 = 1;
2597} 3111}
2598 3112
2599void inline_size 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
2600infy_init (EV_P) 3125infy_init (EV_P)
2601{ 3126{
2602 if (fs_fd != -2) 3127 if (fs_fd != -2)
2603 return; 3128 return;
2604 3129
2605 fs_fd = -1; 3130 fs_fd = -1;
2606 3131
2607 check_2625 (EV_A); 3132 ev_check_2625 (EV_A);
2608 3133
2609 fs_fd = inotify_init (); 3134 fs_fd = infy_newfd ();
2610 3135
2611 if (fs_fd >= 0) 3136 if (fs_fd >= 0)
2612 { 3137 {
3138 fd_intern (fs_fd);
2613 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3139 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2614 ev_set_priority (&fs_w, EV_MAXPRI); 3140 ev_set_priority (&fs_w, EV_MAXPRI);
2615 ev_io_start (EV_A_ &fs_w); 3141 ev_io_start (EV_A_ &fs_w);
3142 ev_unref (EV_A);
2616 } 3143 }
2617} 3144}
2618 3145
2619void inline_size 3146inline_size void
2620infy_fork (EV_P) 3147infy_fork (EV_P)
2621{ 3148{
2622 int slot; 3149 int slot;
2623 3150
2624 if (fs_fd < 0) 3151 if (fs_fd < 0)
2625 return; 3152 return;
2626 3153
3154 ev_ref (EV_A);
3155 ev_io_stop (EV_A_ &fs_w);
2627 close (fs_fd); 3156 close (fs_fd);
2628 fs_fd = inotify_init (); 3157 fs_fd = infy_newfd ();
2629 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
2630 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3167 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2631 { 3168 {
2632 WL w_ = fs_hash [slot].head; 3169 WL w_ = fs_hash [slot].head;
2633 fs_hash [slot].head = 0; 3170 fs_hash [slot].head = 0;
2634 3171
2635 while (w_) 3172 while (w_)
… …
2640 w->wd = -1; 3177 w->wd = -1;
2641 3178
2642 if (fs_fd >= 0) 3179 if (fs_fd >= 0)
2643 infy_add (EV_A_ w); /* re-add, no matter what */ 3180 infy_add (EV_A_ w); /* re-add, no matter what */
2644 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);
2645 ev_timer_again (EV_A_ &w->timer); 3185 ev_timer_again (EV_A_ &w->timer);
3186 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3187 }
2646 } 3188 }
2647 } 3189 }
2648} 3190}
2649 3191
2650#endif 3192#endif
… …
2667static void noinline 3209static void noinline
2668stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3210stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2669{ 3211{
2670 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2671 3213
2672 /* we copy this here each the time so that */ 3214 ev_statdata prev = w->attr;
2673 /* prev has the old value when the callback gets invoked */
2674 w->prev = w->attr;
2675 ev_stat_stat (EV_A_ w); 3215 ev_stat_stat (EV_A_ w);
2676 3216
2677 /* 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 */
2678 if ( 3218 if (
2679 w->prev.st_dev != w->attr.st_dev 3219 prev.st_dev != w->attr.st_dev
2680 || w->prev.st_ino != w->attr.st_ino 3220 || prev.st_ino != w->attr.st_ino
2681 || w->prev.st_mode != w->attr.st_mode 3221 || prev.st_mode != w->attr.st_mode
2682 || w->prev.st_nlink != w->attr.st_nlink 3222 || prev.st_nlink != w->attr.st_nlink
2683 || w->prev.st_uid != w->attr.st_uid 3223 || prev.st_uid != w->attr.st_uid
2684 || w->prev.st_gid != w->attr.st_gid 3224 || prev.st_gid != w->attr.st_gid
2685 || w->prev.st_rdev != w->attr.st_rdev 3225 || prev.st_rdev != w->attr.st_rdev
2686 || w->prev.st_size != w->attr.st_size 3226 || prev.st_size != w->attr.st_size
2687 || w->prev.st_atime != w->attr.st_atime 3227 || prev.st_atime != w->attr.st_atime
2688 || w->prev.st_mtime != w->attr.st_mtime 3228 || prev.st_mtime != w->attr.st_mtime
2689 || w->prev.st_ctime != w->attr.st_ctime 3229 || prev.st_ctime != w->attr.st_ctime
2690 ) { 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
2691 #if EV_USE_INOTIFY 3236 #if EV_USE_INOTIFY
2692 if (fs_fd >= 0) 3237 if (fs_fd >= 0)
2693 { 3238 {
2694 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2695 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
… …
2720 3265
2721 if (fs_fd >= 0) 3266 if (fs_fd >= 0)
2722 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2723 else 3268 else
2724#endif 3269#endif
3270 {
2725 ev_timer_again (EV_A_ &w->timer); 3271 ev_timer_again (EV_A_ &w->timer);
3272 ev_unref (EV_A);
3273 }
2726 3274
2727 ev_start (EV_A_ (W)w, 1); 3275 ev_start (EV_A_ (W)w, 1);
2728 3276
2729 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2730} 3278}
… …
2739 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2740 3288
2741#if EV_USE_INOTIFY 3289#if EV_USE_INOTIFY
2742 infy_del (EV_A_ w); 3290 infy_del (EV_A_ w);
2743#endif 3291#endif
3292
3293 if (ev_is_active (&w->timer))
3294 {
3295 ev_ref (EV_A);
2744 ev_timer_stop (EV_A_ &w->timer); 3296 ev_timer_stop (EV_A_ &w->timer);
3297 }
2745 3298
2746 ev_stop (EV_A_ (W)w); 3299 ev_stop (EV_A_ (W)w);
2747 3300
2748 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2749} 3302}
… …
2794 3347
2795 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2796} 3349}
2797#endif 3350#endif
2798 3351
3352#if EV_PREPARE_ENABLE
2799void 3353void
2800ev_prepare_start (EV_P_ ev_prepare *w) 3354ev_prepare_start (EV_P_ ev_prepare *w)
2801{ 3355{
2802 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2803 return; 3357 return;
… …
2829 3383
2830 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
2831 3385
2832 EV_FREQUENT_CHECK; 3386 EV_FREQUENT_CHECK;
2833} 3387}
3388#endif
2834 3389
3390#if EV_CHECK_ENABLE
2835void 3391void
2836ev_check_start (EV_P_ ev_check *w) 3392ev_check_start (EV_P_ ev_check *w)
2837{ 3393{
2838 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2839 return; 3395 return;
… …
2865 3421
2866 ev_stop (EV_A_ (W)w); 3422 ev_stop (EV_A_ (W)w);
2867 3423
2868 EV_FREQUENT_CHECK; 3424 EV_FREQUENT_CHECK;
2869} 3425}
3426#endif
2870 3427
2871#if EV_EMBED_ENABLE 3428#if EV_EMBED_ENABLE
2872void noinline 3429void noinline
2873ev_embed_sweep (EV_P_ ev_embed *w) 3430ev_embed_sweep (EV_P_ ev_embed *w)
2874{ 3431{
… …
2890embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2891{ 3448{
2892 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3449 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2893 3450
2894 { 3451 {
2895 struct ev_loop *loop = w->other; 3452 EV_P = w->other;
2896 3453
2897 while (fdchangecnt) 3454 while (fdchangecnt)
2898 { 3455 {
2899 fd_reify (EV_A); 3456 fd_reify (EV_A);
2900 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3457 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2905static void 3462static void
2906embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2907{ 3464{
2908 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));
2909 3466
3467 ev_embed_stop (EV_A_ w);
3468
2910 { 3469 {
2911 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2912 3471
2913 ev_loop_fork (EV_A); 3472 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2914 } 3474 }
3475
3476 ev_embed_start (EV_A_ w);
2915} 3477}
2916 3478
2917#if 0 3479#if 0
2918static void 3480static void
2919embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3481embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2927{ 3489{
2928 if (expect_false (ev_is_active (w))) 3490 if (expect_false (ev_is_active (w)))
2929 return; 3491 return;
2930 3492
2931 { 3493 {
2932 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2933 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 ()));
2934 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);
2935 } 3497 }
2936 3498
2937 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2938 3500
… …
2964 3526
2965 ev_io_stop (EV_A_ &w->io); 3527 ev_io_stop (EV_A_ &w->io);
2966 ev_prepare_stop (EV_A_ &w->prepare); 3528 ev_prepare_stop (EV_A_ &w->prepare);
2967 ev_fork_stop (EV_A_ &w->fork); 3529 ev_fork_stop (EV_A_ &w->fork);
2968 3530
3531 ev_stop (EV_A_ (W)w);
3532
2969 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2970} 3534}
2971#endif 3535#endif
2972 3536
2973#if EV_FORK_ENABLE 3537#if EV_FORK_ENABLE
… …
3049 3613
3050void 3614void
3051ev_async_send (EV_P_ ev_async *w) 3615ev_async_send (EV_P_ ev_async *w)
3052{ 3616{
3053 w->sent = 1; 3617 w->sent = 1;
3054 evpipe_write (EV_A_ &gotasync); 3618 evpipe_write (EV_A_ &async_pending);
3055} 3619}
3056#endif 3620#endif
3057 3621
3058/*****************************************************************************/ 3622/*****************************************************************************/
3059 3623
… …
3099{ 3663{
3100 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));
3101 3665
3102 if (expect_false (!once)) 3666 if (expect_false (!once))
3103 { 3667 {
3104 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3668 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3105 return; 3669 return;
3106 } 3670 }
3107 3671
3108 once->cb = cb; 3672 once->cb = cb;
3109 once->arg = arg; 3673 once->arg = arg;
… …
3121 ev_timer_set (&once->to, timeout, 0.); 3685 ev_timer_set (&once->to, timeout, 0.);
3122 ev_timer_start (EV_A_ &once->to); 3686 ev_timer_start (EV_A_ &once->to);
3123 } 3687 }
3124} 3688}
3125 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
3126#if EV_MULTIPLICITY 3806#if EV_MULTIPLICITY
3127 #include "ev_wrap.h" 3807 #include "ev_wrap.h"
3128#endif 3808#endif
3129 3809
3130#ifdef __cplusplus 3810#ifdef __cplusplus

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