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Comparing libev/ev.c (file contents):
Revision 1.261 by root, Mon Sep 29 03:31:14 2008 UTC vs.
Revision 1.350 by root, Sat Oct 16 00:59:56 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
95# else
96# undef EV_USE_SELECT
97# define EV_USE_SELECT 0
74# endif 98# endif
75 99
100# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 101# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 102# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
89# endif
90# endif 107# endif
91 108
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 110# ifndef EV_USE_EPOLL
95# else 111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
98# endif 116# endif
99 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 119# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
106# endif 125# endif
107 126
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 128# ifndef EV_USE_PORT
111# else 129# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 130# endif
131# else
132# undef EV_USE_PORT
133# define EV_USE_PORT 0
114# endif 134# endif
115 135
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 137# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 138# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 139# endif
140# else
141# undef EV_USE_INOTIFY
142# define EV_USE_INOTIFY 0
122# endif 143# endif
123 144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 147# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
152# endif
153
154# if HAVE_EVENTFD
155# ifndef EV_USE_EVENTFD
156# define EV_USE_EVENTFD EV_FEATURE_OS
157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
160# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 194# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
164# endif 197# endif
198# undef EV_AVOID_STDIO
165#endif 199#endif
200
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
166 208
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 209/* this block tries to deduce configuration from header-defined symbols and defaults */
210
211/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG)
213/* use what's provided */
214#elif defined (NSIG)
215# define EV_NSIG (NSIG)
216#elif defined(_NSIG)
217# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX)
219# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX)
221# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX)
223# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG)
225# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG)
227# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE)
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig)
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else
233# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */
236# define EV_NSIG 65
237#endif
238
239#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else
243# define EV_USE_CLOCK_SYSCALL 0
244# endif
245#endif
168 246
169#ifndef EV_USE_MONOTONIC 247#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 249# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 250# else
173# define EV_USE_MONOTONIC 0 251# define EV_USE_MONOTONIC 0
174# endif 252# endif
175#endif 253#endif
176 254
177#ifndef EV_USE_REALTIME 255#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 256# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 257#endif
180 258
181#ifndef EV_USE_NANOSLEEP 259#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 260# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 261# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 262# else
185# define EV_USE_NANOSLEEP 0 263# define EV_USE_NANOSLEEP 0
186# endif 264# endif
187#endif 265#endif
188 266
189#ifndef EV_USE_SELECT 267#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 268# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 269#endif
192 270
193#ifndef EV_USE_POLL 271#ifndef EV_USE_POLL
194# ifdef _WIN32 272# ifdef _WIN32
195# define EV_USE_POLL 0 273# define EV_USE_POLL 0
196# else 274# else
197# define EV_USE_POLL 1 275# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 276# endif
199#endif 277#endif
200 278
201#ifndef EV_USE_EPOLL 279#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 281# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 282# else
205# define EV_USE_EPOLL 0 283# define EV_USE_EPOLL 0
206# endif 284# endif
207#endif 285#endif
208 286
… …
214# define EV_USE_PORT 0 292# define EV_USE_PORT 0
215#endif 293#endif
216 294
217#ifndef EV_USE_INOTIFY 295#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 297# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 298# else
221# define EV_USE_INOTIFY 0 299# define EV_USE_INOTIFY 0
222# endif 300# endif
223#endif 301#endif
224 302
225#ifndef EV_PID_HASHSIZE 303#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 304# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 305#endif
232 306
233#ifndef EV_INOTIFY_HASHSIZE 307#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 308# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 309#endif
240 310
241#ifndef EV_USE_EVENTFD 311#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 313# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 314# else
245# define EV_USE_EVENTFD 0 315# define EV_USE_EVENTFD 0
316# endif
317#endif
318
319#ifndef EV_USE_SIGNALFD
320# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
321# define EV_USE_SIGNALFD EV_FEATURE_OS
322# else
323# define EV_USE_SIGNALFD 0
246# endif 324# endif
247#endif 325#endif
248 326
249#if 0 /* debugging */ 327#if 0 /* debugging */
250# define EV_VERIFY 3 328# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 329# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 330# define EV_HEAP_CACHE_AT 1
253#endif 331#endif
254 332
255#ifndef EV_VERIFY 333#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 334# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 335#endif
258 336
259#ifndef EV_USE_4HEAP 337#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 338# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 339#endif
262 340
263#ifndef EV_HEAP_CACHE_AT 341#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif
344
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h>
349# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1
353# else
354# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0
356# endif
265#endif 357#endif
266 358
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 359/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
268 366
269#ifndef CLOCK_MONOTONIC 367#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 369# define EV_USE_MONOTONIC 0
272#endif 370#endif
… …
286# include <sys/select.h> 384# include <sys/select.h>
287# endif 385# endif
288#endif 386#endif
289 387
290#if EV_USE_INOTIFY 388#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h>
291# include <sys/inotify.h> 391# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0
396# endif
292#endif 397#endif
293 398
294#if EV_SELECT_IS_WINSOCKET 399#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 400# include <winsock.h>
296#endif 401#endif
297 402
298#if EV_USE_EVENTFD 403#if EV_USE_EVENTFD
299/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300# include <stdint.h> 405# include <stdint.h>
406# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK
408# endif
409# ifndef EFD_CLOEXEC
410# ifdef O_CLOEXEC
411# define EFD_CLOEXEC O_CLOEXEC
412# else
413# define EFD_CLOEXEC 02000000
414# endif
415# endif
301# ifdef __cplusplus 416# ifdef __cplusplus
302extern "C" { 417extern "C" {
303# endif 418# endif
304int eventfd (unsigned int initval, int flags); 419int (eventfd) (unsigned int initval, int flags);
305# ifdef __cplusplus 420# ifdef __cplusplus
306} 421}
307# endif 422# endif
308#endif 423#endif
309 424
425#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h>
428# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK
430# endif
431# ifndef SFD_CLOEXEC
432# ifdef O_CLOEXEC
433# define SFD_CLOEXEC O_CLOEXEC
434# else
435# define SFD_CLOEXEC 02000000
436# endif
437# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags);
442
443struct signalfd_siginfo
444{
445 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)];
447};
448# ifdef __cplusplus
449}
450# endif
451#endif
452
310/**/ 453/**/
311 454
312#if EV_VERIFY >= 3 455#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 456# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 457#else
315# define EV_FREQUENT_CHECK do { } while (0) 458# define EV_FREQUENT_CHECK do { } while (0)
316#endif 459#endif
317 460
318/* 461/*
… …
325 */ 468 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327 470
328#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) */
329#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) */
330/*#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)
331 476
332#if __GNUC__ >= 4 477#if __GNUC__ >= 4
333# define expect(expr,value) __builtin_expect ((expr),(value)) 478# define expect(expr,value) __builtin_expect ((expr),(value))
334# define noinline __attribute__ ((noinline)) 479# define noinline __attribute__ ((noinline))
335#else 480#else
… …
342 487
343#define expect_false(expr) expect ((expr) != 0, 0) 488#define expect_false(expr) expect ((expr) != 0, 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 489#define expect_true(expr) expect ((expr) != 0, 1)
345#define inline_size static inline 490#define inline_size static inline
346 491
347#if EV_MINIMAL 492#if EV_FEATURE_CODE
493# define inline_speed static inline
494#else
348# 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)
349#else 502#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif
355 505
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 506#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 507#define EMPTY2(a,b) /* used to suppress some warnings */
358 508
359typedef ev_watcher *W; 509typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 511typedef ev_watcher_time *WT;
362 512
363#define ev_active(w) ((W)(w))->active 513#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 514#define ev_at(w) ((WT)(w))->at
365 515
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
366#if EV_USE_MONOTONIC 522#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 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)
370#endif 534#endif
371 535
372#ifdef _WIN32 536#ifdef _WIN32
373# include "ev_win32.c" 537# include "ev_win32.c"
374#endif 538#endif
375 539
376/*****************************************************************************/ 540/*****************************************************************************/
377 541
542#if EV_AVOID_STDIO
543static void noinline
544ev_printerr (const char *msg)
545{
546 write (STDERR_FILENO, msg, strlen (msg));
547}
548#endif
549
378static void (*syserr_cb)(const char *msg); 550static void (*syserr_cb)(const char *msg);
379 551
380void 552void
381ev_set_syserr_cb (void (*cb)(const char *msg)) 553ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 554{
383 syserr_cb = cb; 555 syserr_cb = cb;
384} 556}
385 557
386static void noinline 558static void noinline
387syserr (const char *msg) 559ev_syserr (const char *msg)
388{ 560{
389 if (!msg) 561 if (!msg)
390 msg = "(libev) system error"; 562 msg = "(libev) system error";
391 563
392 if (syserr_cb) 564 if (syserr_cb)
393 syserr_cb (msg); 565 syserr_cb (msg);
394 else 566 else
395 { 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
396 perror (msg); 576 perror (msg);
577#endif
397 abort (); 578 abort ();
398 } 579 }
399} 580}
400 581
401static void * 582static void *
402ev_realloc_emul (void *ptr, long size) 583ev_realloc_emul (void *ptr, long size)
403{ 584{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
404 /* some systems, notably openbsd and darwin, fail to properly 588 /* some systems, notably openbsd and darwin, fail to properly
405 * 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
406 * the single unix specification, so work around them here. 590 * the single unix specification, so work around them here.
407 */ 591 */
408 592
409 if (size) 593 if (size)
410 return realloc (ptr, size); 594 return realloc (ptr, size);
411 595
412 free (ptr); 596 free (ptr);
413 return 0; 597 return 0;
598#endif
414} 599}
415 600
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 602
418void 603void
… …
426{ 611{
427 ptr = alloc (ptr, size); 612 ptr = alloc (ptr, size);
428 613
429 if (!ptr && size) 614 if (!ptr && size)
430 { 615 {
616#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n");
618#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
620#endif
432 abort (); 621 abort ();
433 } 622 }
434 623
435 return ptr; 624 return ptr;
436} 625}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 627#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 628#define ev_free(ptr) ev_realloc ((ptr), 0)
440 629
441/*****************************************************************************/ 630/*****************************************************************************/
442 631
632/* set in reify when reification needed */
633#define EV_ANFD_REIFY 1
634
635/* file descriptor info structure */
443typedef struct 636typedef struct
444{ 637{
445 WL head; 638 WL head;
446 unsigned char events; 639 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 642 unsigned char unused;
643#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif
448#if EV_SELECT_IS_WINSOCKET 646#if EV_SELECT_IS_WINSOCKET
449 SOCKET handle; 647 SOCKET handle;
450#endif 648#endif
451} ANFD; 649} ANFD;
452 650
651/* stores the pending event set for a given watcher */
453typedef struct 652typedef struct
454{ 653{
455 W w; 654 W w;
456 int events; 655 int events; /* the pending event set for the given watcher */
457} ANPENDING; 656} ANPENDING;
458 657
459#if EV_USE_INOTIFY 658#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 659/* hash table entry per inotify-id */
461typedef struct 660typedef struct
… …
464} ANFS; 663} ANFS;
465#endif 664#endif
466 665
467/* Heap Entry */ 666/* Heap Entry */
468#if EV_HEAP_CACHE_AT 667#if EV_HEAP_CACHE_AT
668 /* a heap element */
469 typedef struct { 669 typedef struct {
470 ev_tstamp at; 670 ev_tstamp at;
471 WT w; 671 WT w;
472 } ANHE; 672 } ANHE;
473 673
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 674 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 675 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 676 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 677#else
678 /* a heap element */
478 typedef WT ANHE; 679 typedef WT ANHE;
479 680
480 #define ANHE_w(he) (he) 681 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 682 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 683 #define ANHE_at_cache(he)
… …
506 707
507 static int ev_default_loop_ptr; 708 static int ev_default_loop_ptr;
508 709
509#endif 710#endif
510 711
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
511/*****************************************************************************/ 724/*****************************************************************************/
512 725
726#ifndef EV_HAVE_EV_TIME
513ev_tstamp 727ev_tstamp
514ev_time (void) 728ev_time (void)
515{ 729{
516#if EV_USE_REALTIME 730#if EV_USE_REALTIME
731 if (expect_true (have_realtime))
732 {
517 struct timespec ts; 733 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 734 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 735 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 736 }
737#endif
738
521 struct timeval tv; 739 struct timeval tv;
522 gettimeofday (&tv, 0); 740 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 741 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 742}
743#endif
526 744
527ev_tstamp inline_size 745inline_size ev_tstamp
528get_clock (void) 746get_clock (void)
529{ 747{
530#if EV_USE_MONOTONIC 748#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 749 if (expect_true (have_monotonic))
532 { 750 {
… …
553 if (delay > 0.) 771 if (delay > 0.)
554 { 772 {
555#if EV_USE_NANOSLEEP 773#if EV_USE_NANOSLEEP
556 struct timespec ts; 774 struct timespec ts;
557 775
558 ts.tv_sec = (time_t)delay; 776 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 777 nanosleep (&ts, 0);
562#elif defined(_WIN32) 778#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 779 Sleep ((unsigned long)(delay * 1e3));
564#else 780#else
565 struct timeval tv; 781 struct timeval tv;
566 782
567 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569
570 /* 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 */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 784 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 785 /* by older ones */
786 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 787 select (0, 0, 0, 0, &tv);
574#endif 788#endif
575 } 789 }
576} 790}
577 791
578/*****************************************************************************/ 792/*****************************************************************************/
579 793
580#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 */
581 795
582int 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
583array_nextsize (int elem, int cur, int cnt) 799array_nextsize (int elem, int cur, int cnt)
584{ 800{
585 int ncur = cur + 1; 801 int ncur = cur + 1;
586 802
587 do 803 do
… …
604array_realloc (int elem, void *base, int *cur, int cnt) 820array_realloc (int elem, void *base, int *cur, int cnt)
605{ 821{
606 *cur = array_nextsize (elem, *cur, cnt); 822 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 823 return ev_realloc (base, elem * *cur);
608} 824}
825
826#define array_init_zero(base,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 828
610#define array_needsize(type,base,cur,cnt,init) \ 829#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 830 if (expect_false ((cnt) > (cur))) \
612 { \ 831 { \
613 int ocur_ = (cur); \ 832 int ocur_ = (cur); \
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 844 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 845 }
627#endif 846#endif
628 847
629#define array_free(stem, idx) \ 848#define array_free(stem, idx) \
630 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
631 850
632/*****************************************************************************/ 851/*****************************************************************************/
852
853/* dummy callback for pending events */
854static void noinline
855pendingcb (EV_P_ ev_prepare *w, int revents)
856{
857}
633 858
634void noinline 859void noinline
635ev_feed_event (EV_P_ void *w, int revents) 860ev_feed_event (EV_P_ void *w, int revents)
636{ 861{
637 W w_ = (W)w; 862 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 871 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 872 pendings [pri][w_->pending - 1].events = revents;
648 } 873 }
649} 874}
650 875
651void 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
652queue_events (EV_P_ W *events, int eventcnt, int type) 892queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 893{
654 int i; 894 int i;
655 895
656 for (i = 0; i < eventcnt; ++i) 896 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 897 ev_feed_event (EV_A_ events [i], type);
658} 898}
659 899
660/*****************************************************************************/ 900/*****************************************************************************/
661 901
662void inline_size 902inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 903fd_event_nocheck (EV_P_ int fd, int revents)
677{ 904{
678 ANFD *anfd = anfds + fd; 905 ANFD *anfd = anfds + fd;
679 ev_io *w; 906 ev_io *w;
680 907
681 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)
… …
685 if (ev) 912 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 913 ev_feed_event (EV_A_ (W)w, ev);
687 } 914 }
688} 915}
689 916
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
690void 928void
691ev_feed_fd_event (EV_P_ int fd, int revents) 929ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 930{
693 if (fd >= 0 && fd < anfdmax) 931 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 932 fd_event_nocheck (EV_A_ fd, revents);
695} 933}
696 934
697void inline_size 935/* make sure the external fd watch events are in-sync */
936/* with the kernel/libev internal state */
937inline_size void
698fd_reify (EV_P) 938fd_reify (EV_P)
699{ 939{
700 int i; 940 int i;
701 941
702 for (i = 0; i < fdchangecnt; ++i) 942 for (i = 0; i < fdchangecnt; ++i)
703 { 943 {
704 int fd = fdchanges [i]; 944 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 945 ANFD *anfd = anfds + fd;
706 ev_io *w; 946 ev_io *w;
707 947
708 unsigned char events = 0; 948 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify;
709 950
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 951 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 952
713#if EV_SELECT_IS_WINSOCKET 953#if EV_SELECT_IS_WINSOCKET
714 if (events) 954 if (o_reify & EV__IOFDSET)
715 { 955 {
716 unsigned long arg; 956 unsigned long arg;
717 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else
720 anfd->handle = _get_osfhandle (fd);
721 #endif
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723 } 959 }
724#endif 960#endif
725 961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
726 { 963 {
727 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify;
729
730 anfd->reify = 0;
731 anfd->events = events; 964 anfd->events = 0;
732 965
733 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)
734 backend_modify (EV_A_ fd, o_events, events); 974 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 975 }
737 976
738 fdchangecnt = 0; 977 fdchangecnt = 0;
739} 978}
740 979
741void inline_size 980/* something about the given fd changed */
981inline_size void
742fd_change (EV_P_ int fd, int flags) 982fd_change (EV_P_ int fd, int flags)
743{ 983{
744 unsigned char reify = anfds [fd].reify; 984 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 985 anfds [fd].reify |= flags;
746 986
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 990 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 991 fdchanges [fdchangecnt - 1] = fd;
752 } 992 }
753} 993}
754 994
755void inline_speed 995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void
756fd_kill (EV_P_ int fd) 997fd_kill (EV_P_ int fd)
757{ 998{
758 ev_io *w; 999 ev_io *w;
759 1000
760 while ((w = (ev_io *)anfds [fd].head)) 1001 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1003 ev_io_stop (EV_A_ w);
763 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);
764 } 1005 }
765} 1006}
766 1007
767int inline_size 1008/* check whether the given fd is actually valid, for error recovery */
1009inline_size int
768fd_valid (int fd) 1010fd_valid (int fd)
769{ 1011{
770#ifdef _WIN32 1012#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1014#else
773 return fcntl (fd, F_GETFD) != -1; 1015 return fcntl (fd, F_GETFD) != -1;
774#endif 1016#endif
775} 1017}
776 1018
… …
794 1036
795 for (fd = anfdmax; fd--; ) 1037 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1038 if (anfds [fd].events)
797 { 1039 {
798 fd_kill (EV_A_ fd); 1040 fd_kill (EV_A_ fd);
799 return; 1041 break;
800 } 1042 }
801} 1043}
802 1044
803/* 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 */
804static void noinline 1046static void noinline
… …
808 1050
809 for (fd = 0; fd < anfdmax; ++fd) 1051 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1052 if (anfds [fd].events)
811 { 1053 {
812 anfds [fd].events = 0; 1054 anfds [fd].events = 0;
1055 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1056 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1057 }
815} 1058}
816 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
817/*****************************************************************************/ 1074/*****************************************************************************/
818 1075
819/* 1076/*
820 * 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
821 * 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
822 * the branching factor of the d-tree. 1079 * the branching factor of the d-tree.
823 */ 1080 */
824 1081
825/* 1082/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1091#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1092#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1093#define UPHEAP_DONE(p,k) ((p) == (k))
837 1094
838/* away from the root */ 1095/* away from the root */
839void inline_speed 1096inline_speed void
840downheap (ANHE *heap, int N, int k) 1097downheap (ANHE *heap, int N, int k)
841{ 1098{
842 ANHE he = heap [k]; 1099 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1100 ANHE *E = heap + N + HEAP0;
844 1101
… …
884#define HEAP0 1 1141#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1142#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1143#define UPHEAP_DONE(p,k) (!(p))
887 1144
888/* away from the root */ 1145/* away from the root */
889void inline_speed 1146inline_speed void
890downheap (ANHE *heap, int N, int k) 1147downheap (ANHE *heap, int N, int k)
891{ 1148{
892 ANHE he = heap [k]; 1149 ANHE he = heap [k];
893 1150
894 for (;;) 1151 for (;;)
895 { 1152 {
896 int c = k << 1; 1153 int c = k << 1;
897 1154
898 if (c > N + HEAP0 - 1) 1155 if (c >= N + HEAP0)
899 break; 1156 break;
900 1157
901 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])
902 ? 1 : 0; 1159 ? 1 : 0;
903 1160
… …
914 ev_active (ANHE_w (he)) = k; 1171 ev_active (ANHE_w (he)) = k;
915} 1172}
916#endif 1173#endif
917 1174
918/* towards the root */ 1175/* towards the root */
919void inline_speed 1176inline_speed void
920upheap (ANHE *heap, int k) 1177upheap (ANHE *heap, int k)
921{ 1178{
922 ANHE he = heap [k]; 1179 ANHE he = heap [k];
923 1180
924 for (;;) 1181 for (;;)
… …
935 1192
936 heap [k] = he; 1193 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1194 ev_active (ANHE_w (he)) = k;
938} 1195}
939 1196
940void inline_size 1197/* move an element suitably so it is in a correct place */
1198inline_size void
941adjustheap (ANHE *heap, int N, int k) 1199adjustheap (ANHE *heap, int N, int k)
942{ 1200{
943 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)]))
944 upheap (heap, k); 1202 upheap (heap, k);
945 else 1203 else
946 downheap (heap, N, k); 1204 downheap (heap, N, k);
947} 1205}
948 1206
949/* 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 */
950void inline_size 1208inline_size void
951reheap (ANHE *heap, int N) 1209reheap (ANHE *heap, int N)
952{ 1210{
953 int i; 1211 int i;
954 1212
955 /* 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 */
… …
958 upheap (heap, i + HEAP0); 1216 upheap (heap, i + HEAP0);
959} 1217}
960 1218
961/*****************************************************************************/ 1219/*****************************************************************************/
962 1220
1221/* associate signal watchers to a signal signal */
963typedef struct 1222typedef struct
964{ 1223{
1224 EV_ATOMIC_T pending;
1225#if EV_MULTIPLICITY
1226 EV_P;
1227#endif
965 WL head; 1228 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1229} ANSIG;
968 1230
969static ANSIG *signals; 1231static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1232
986/*****************************************************************************/ 1233/*****************************************************************************/
987 1234
988void inline_speed 1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1236
1000static void noinline 1237static void noinline
1001evpipe_init (EV_P) 1238evpipe_init (EV_P)
1002{ 1239{
1003 if (!ev_is_active (&pipeev)) 1240 if (!ev_is_active (&pipe_w))
1004 { 1241 {
1005#if EV_USE_EVENTFD 1242# if EV_USE_EVENTFD
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1245 evfd = eventfd (0, 0);
1246
1247 if (evfd >= 0)
1007 { 1248 {
1008 evpipe [0] = -1; 1249 evpipe [0] = -1;
1009 fd_intern (evfd); 1250 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1251 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1252 }
1012 else 1253 else
1013#endif 1254# endif
1014 { 1255 {
1015 while (pipe (evpipe)) 1256 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1257 ev_syserr ("(libev) error creating signal/async pipe");
1017 1258
1018 fd_intern (evpipe [0]); 1259 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1260 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1261 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1262 }
1022 1263
1023 ev_io_start (EV_A_ &pipeev); 1264 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1266 }
1026} 1267}
1027 1268
1028void inline_size 1269inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1271{
1031 if (!*flag) 1272 if (!*flag)
1032 { 1273 {
1033 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;
1034 1276
1035 *flag = 1; 1277 *flag = 1;
1036 1278
1037#if EV_USE_EVENTFD 1279#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1280 if (evfd >= 0)
… …
1040 uint64_t counter = 1; 1282 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1283 write (evfd, &counter, sizeof (uint64_t));
1042 } 1284 }
1043 else 1285 else
1044#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. */
1045 write (evpipe [1], &old_errno, 1); 1292 write (evpipe [1], &dummy, 1);
1046 1293
1047 errno = old_errno; 1294 errno = old_errno;
1048 } 1295 }
1049} 1296}
1050 1297
1298/* called whenever the libev signal pipe */
1299/* got some events (signal, async) */
1051static void 1300static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1301pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1302{
1303 int i;
1304
1054#if EV_USE_EVENTFD 1305#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1306 if (evfd >= 0)
1056 { 1307 {
1057 uint64_t counter; 1308 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1309 read (evfd, &counter, sizeof (uint64_t));
1059 } 1310 }
1060 else 1311 else
1061#endif 1312#endif
1062 { 1313 {
1063 char dummy; 1314 char dummy;
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 read (evpipe [0], &dummy, 1); 1316 read (evpipe [0], &dummy, 1);
1065 } 1317 }
1066 1318
1067 if (gotsig && ev_is_default_loop (EV_A)) 1319 if (sig_pending)
1068 { 1320 {
1069 int signum; 1321 sig_pending = 0;
1070 gotsig = 0;
1071 1322
1072 for (signum = signalmax; signum--; ) 1323 for (i = EV_NSIG - 1; i--; )
1073 if (signals [signum].gotsig) 1324 if (expect_false (signals [i].pending))
1074 ev_feed_signal_event (EV_A_ signum + 1); 1325 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1326 }
1076 1327
1077#if EV_ASYNC_ENABLE 1328#if EV_ASYNC_ENABLE
1078 if (gotasync) 1329 if (async_pending)
1079 { 1330 {
1080 int i; 1331 async_pending = 0;
1081 gotasync = 0;
1082 1332
1083 for (i = asynccnt; i--; ) 1333 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1334 if (asyncs [i]->sent)
1085 { 1335 {
1086 asyncs [i]->sent = 0; 1336 asyncs [i]->sent = 0;
… …
1094 1344
1095static void 1345static void
1096ev_sighandler (int signum) 1346ev_sighandler (int signum)
1097{ 1347{
1098#if EV_MULTIPLICITY 1348#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct; 1349 EV_P = signals [signum - 1].loop;
1100#endif 1350#endif
1101 1351
1102#if _WIN32 1352#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1353 signal (signum, ev_sighandler);
1104#endif 1354#endif
1105 1355
1106 signals [signum - 1].gotsig = 1; 1356 signals [signum - 1].pending = 1;
1107 evpipe_write (EV_A_ &gotsig); 1357 evpipe_write (EV_A_ &sig_pending);
1108} 1358}
1109 1359
1110void noinline 1360void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1361ev_feed_signal_event (EV_P_ int signum)
1112{ 1362{
1113 WL w; 1363 WL w;
1114 1364
1365 if (expect_false (signum <= 0 || signum > EV_NSIG))
1366 return;
1367
1368 --signum;
1369
1115#if EV_MULTIPLICITY 1370#if EV_MULTIPLICITY
1116 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 */
1117#endif 1372 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1373
1119 --signum; 1374 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1375 return;
1376#endif
1123 1377
1124 signals [signum].gotsig = 0; 1378 signals [signum].pending = 0;
1125 1379
1126 for (w = signals [signum].head; w; w = w->next) 1380 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1382}
1129 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
1130/*****************************************************************************/ 1406/*****************************************************************************/
1131 1407
1408#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1409static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1410
1136static ev_signal childev; 1411static ev_signal childev;
1137 1412
1138#ifndef WIFCONTINUED 1413#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1414# define WIFCONTINUED(status) 0
1140#endif 1415#endif
1141 1416
1142void inline_speed 1417/* handle a single child status event */
1418inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1419child_reap (EV_P_ int chain, int pid, int status)
1144{ 1420{
1145 ev_child *w; 1421 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1422 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1423
1148 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)
1149 { 1425 {
1150 if ((w->pid == pid || !w->pid) 1426 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1427 && (!traced || (w->flags & 1)))
1152 { 1428 {
1153 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 */
… …
1160 1436
1161#ifndef WCONTINUED 1437#ifndef WCONTINUED
1162# define WCONTINUED 0 1438# define WCONTINUED 0
1163#endif 1439#endif
1164 1440
1441/* called on sigchld etc., calls waitpid */
1165static void 1442static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1443childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1444{
1168 int pid, status; 1445 int pid, status;
1169 1446
… …
1177 /* 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 */
1178 /* 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 */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1456 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 1457
1181 child_reap (EV_A_ pid, pid, status); 1458 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 1459 if ((EV_PID_HASHSIZE) > 1)
1183 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 */
1184} 1461}
1185 1462
1186#endif 1463#endif
1187 1464
… …
1250 /* kqueue is borked on everything but netbsd apparently */ 1527 /* kqueue is borked on everything but netbsd apparently */
1251 /* 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 */
1252 flags &= ~EVBACKEND_KQUEUE; 1529 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1530#endif
1254#ifdef __APPLE__ 1531#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1532 /* only select works correctly on that "unix-certified" platform */
1256 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) */
1257#endif 1538#endif
1258 1539
1259 return flags; 1540 return flags;
1260} 1541}
1261 1542
… …
1275ev_backend (EV_P) 1556ev_backend (EV_P)
1276{ 1557{
1277 return backend; 1558 return backend;
1278} 1559}
1279 1560
1561#if EV_FEATURE_API
1280unsigned int 1562unsigned int
1281ev_loop_count (EV_P) 1563ev_iteration (EV_P)
1282{ 1564{
1283 return loop_count; 1565 return loop_count;
1284} 1566}
1285 1567
1568unsigned int
1569ev_depth (EV_P)
1570{
1571 return loop_depth;
1572}
1573
1286void 1574void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 1576{
1289 io_blocktime = interval; 1577 io_blocktime = interval;
1290} 1578}
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1582{
1295 timeout_blocktime = interval; 1583 timeout_blocktime = interval;
1296} 1584}
1297 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 */
1298static void noinline 1611static void noinline
1299loop_init (EV_P_ unsigned int flags) 1612loop_init (EV_P_ unsigned int flags)
1300{ 1613{
1301 if (!backend) 1614 if (!backend)
1302 { 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
1303#if EV_USE_MONOTONIC 1626#if EV_USE_MONOTONIC
1627 if (!have_monotonic)
1304 { 1628 {
1305 struct timespec ts; 1629 struct timespec ts;
1630
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1631 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1632 have_monotonic = 1;
1308 } 1633 }
1309#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"));
1310 1646
1311 ev_rt_now = ev_time (); 1647 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1648 mn_now = get_clock ();
1313 now_floor = mn_now; 1649 now_floor = mn_now;
1314 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
1315 1654
1316 io_blocktime = 0.; 1655 io_blocktime = 0.;
1317 timeout_blocktime = 0.; 1656 timeout_blocktime = 0.;
1318 backend = 0; 1657 backend = 0;
1319 backend_fd = -1; 1658 backend_fd = -1;
1320 gotasync = 0; 1659 sig_pending = 0;
1660#if EV_ASYNC_ENABLE
1661 async_pending = 0;
1662#endif
1321#if EV_USE_INOTIFY 1663#if EV_USE_INOTIFY
1322 fs_fd = -2; 1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323#endif 1665#endif
1324 1666#if EV_USE_SIGNALFD
1325 /* pid check not overridable via env */ 1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK)
1328 curpid = getpid ();
1329#endif 1668#endif
1330
1331 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 1669
1336 if (!(flags & 0x0000ffffU)) 1670 if (!(flags & 0x0000ffffU))
1337 flags |= ev_recommended_backends (); 1671 flags |= ev_recommended_backends ();
1338 1672
1339#if EV_USE_PORT 1673#if EV_USE_PORT
… …
1350#endif 1684#endif
1351#if EV_USE_SELECT 1685#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1686 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 1687#endif
1354 1688
1689 ev_prepare_init (&pending_w, pendingcb);
1690
1691#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 1692 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 1693 ev_set_priority (&pipe_w, EV_MAXPRI);
1694#endif
1357 } 1695 }
1358} 1696}
1359 1697
1698/* free up a loop structure */
1360static void noinline 1699static void noinline
1361loop_destroy (EV_P) 1700loop_destroy (EV_P)
1362{ 1701{
1363 int i; 1702 int i;
1364 1703
1365 if (ev_is_active (&pipeev)) 1704 if (ev_is_active (&pipe_w))
1366 { 1705 {
1367 ev_ref (EV_A); /* signal watcher */ 1706 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 1707 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 1708
1370#if EV_USE_EVENTFD 1709#if EV_USE_EVENTFD
1371 if (evfd >= 0) 1710 if (evfd >= 0)
1372 close (evfd); 1711 close (evfd);
1373#endif 1712#endif
1374 1713
1375 if (evpipe [0] >= 0) 1714 if (evpipe [0] >= 0)
1376 { 1715 {
1377 close (evpipe [0]); 1716 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 1717 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 1718 }
1380 } 1719 }
1720
1721#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w))
1723 close (sigfd);
1724#endif
1381 1725
1382#if EV_USE_INOTIFY 1726#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 1727 if (fs_fd >= 0)
1384 close (fs_fd); 1728 close (fs_fd);
1385#endif 1729#endif
… …
1409#if EV_IDLE_ENABLE 1753#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 1754 array_free (idle, [i]);
1411#endif 1755#endif
1412 } 1756 }
1413 1757
1414 ev_free (anfds); anfdmax = 0; 1758 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 1759
1416 /* 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);
1417 array_free (fdchange, EMPTY); 1762 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1763 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1764#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1765 array_free (periodic, EMPTY);
1421#endif 1766#endif
… …
1430 1775
1431 backend = 0; 1776 backend = 0;
1432} 1777}
1433 1778
1434#if EV_USE_INOTIFY 1779#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1780inline_size void infy_fork (EV_P);
1436#endif 1781#endif
1437 1782
1438void inline_size 1783inline_size void
1439loop_fork (EV_P) 1784loop_fork (EV_P)
1440{ 1785{
1441#if EV_USE_PORT 1786#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1787 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1788#endif
… …
1449#endif 1794#endif
1450#if EV_USE_INOTIFY 1795#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 1796 infy_fork (EV_A);
1452#endif 1797#endif
1453 1798
1454 if (ev_is_active (&pipeev)) 1799 if (ev_is_active (&pipe_w))
1455 { 1800 {
1456 /* this "locks" the handlers against writing to the pipe */ 1801 /* this "locks" the handlers against writing to the pipe */
1457 /* while we modify the fd vars */ 1802 /* while we modify the fd vars */
1458 gotsig = 1; 1803 sig_pending = 1;
1459#if EV_ASYNC_ENABLE 1804#if EV_ASYNC_ENABLE
1460 gotasync = 1; 1805 async_pending = 1;
1461#endif 1806#endif
1462 1807
1463 ev_ref (EV_A); 1808 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 1809 ev_io_stop (EV_A_ &pipe_w);
1465 1810
1466#if EV_USE_EVENTFD 1811#if EV_USE_EVENTFD
1467 if (evfd >= 0) 1812 if (evfd >= 0)
1468 close (evfd); 1813 close (evfd);
1469#endif 1814#endif
1470 1815
1471 if (evpipe [0] >= 0) 1816 if (evpipe [0] >= 0)
1472 { 1817 {
1473 close (evpipe [0]); 1818 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 1820 }
1476 1821
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 1823 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 1824 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 1825 pipecb (EV_A_ &pipe_w, EV_READ);
1826#endif
1480 } 1827 }
1481 1828
1482 postfork = 0; 1829 postfork = 0;
1483} 1830}
1484 1831
1485#if EV_MULTIPLICITY 1832#if EV_MULTIPLICITY
1486 1833
1487struct ev_loop * 1834struct ev_loop *
1488ev_loop_new (unsigned int flags) 1835ev_loop_new (unsigned int flags)
1489{ 1836{
1490 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));
1491 1838
1492 memset (loop, 0, sizeof (struct ev_loop)); 1839 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 1840 loop_init (EV_A_ flags);
1495 1841
1496 if (ev_backend (EV_A)) 1842 if (ev_backend (EV_A))
1497 return loop; 1843 return EV_A;
1498 1844
1499 return 0; 1845 return 0;
1500} 1846}
1501 1847
1502void 1848void
… …
1509void 1855void
1510ev_loop_fork (EV_P) 1856ev_loop_fork (EV_P)
1511{ 1857{
1512 postfork = 1; /* must be in line with ev_default_fork */ 1858 postfork = 1; /* must be in line with ev_default_fork */
1513} 1859}
1860#endif /* multiplicity */
1514 1861
1515#if EV_VERIFY 1862#if EV_VERIFY
1516static void noinline 1863static void noinline
1517verify_watcher (EV_P_ W w) 1864verify_watcher (EV_P_ W w)
1518{ 1865{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1867
1521 if (w->pending) 1868 if (w->pending)
1522 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));
1523} 1870}
1524 1871
1525static void noinline 1872static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1873verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1874{
1528 int i; 1875 int i;
1529 1876
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1877 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1878 {
1532 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));
1533 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])));
1534 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]))));
1535 1882
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1884 }
1538} 1885}
1539 1886
1540static void noinline 1887static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1888array_verify (EV_P_ W *ws, int cnt)
1542{ 1889{
1543 while (cnt--) 1890 while (cnt--)
1544 { 1891 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1893 verify_watcher (EV_A_ ws [cnt]);
1547 } 1894 }
1548} 1895}
1549#endif 1896#endif
1550 1897
1898#if EV_FEATURE_API
1551void 1899void
1552ev_loop_verify (EV_P) 1900ev_verify (EV_P)
1553{ 1901{
1554#if EV_VERIFY 1902#if EV_VERIFY
1555 int i; 1903 int i;
1556 WL w; 1904 WL w;
1557 1905
1558 assert (activecnt >= -1); 1906 assert (activecnt >= -1);
1559 1907
1560 assert (fdchangemax >= fdchangecnt); 1908 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1909 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1911
1564 assert (anfdmax >= 0); 1912 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1913 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1914 for (w = anfds [i].head; w; w = w->next)
1567 { 1915 {
1568 verify_watcher (EV_A_ (W)w); 1916 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 1919 }
1572 1920
1573 assert (timermax >= timercnt); 1921 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 1922 verify_heap (EV_A_ timers, timercnt);
1575 1923
… …
1596#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 1945 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 1946 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 1947#endif
1600 1948
1949#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 1950 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 1951 array_verify (EV_A_ (W *)prepares, preparecnt);
1952#endif
1603 1953
1954#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 1955 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 1956 array_verify (EV_A_ (W *)checks, checkcnt);
1957#endif
1606 1958
1607# if 0 1959# if 0
1960#if EV_CHILD_ENABLE
1608 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)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1962 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1963#endif
1610# endif 1964# endif
1611#endif 1965#endif
1612} 1966}
1613 1967#endif
1614#endif /* multiplicity */
1615 1968
1616#if EV_MULTIPLICITY 1969#if EV_MULTIPLICITY
1617struct ev_loop * 1970struct ev_loop *
1618ev_default_loop_init (unsigned int flags) 1971ev_default_loop_init (unsigned int flags)
1619#else 1972#else
… …
1622#endif 1975#endif
1623{ 1976{
1624 if (!ev_default_loop_ptr) 1977 if (!ev_default_loop_ptr)
1625 { 1978 {
1626#if EV_MULTIPLICITY 1979#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1980 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 1981#else
1629 ev_default_loop_ptr = 1; 1982 ev_default_loop_ptr = 1;
1630#endif 1983#endif
1631 1984
1632 loop_init (EV_A_ flags); 1985 loop_init (EV_A_ flags);
1633 1986
1634 if (ev_backend (EV_A)) 1987 if (ev_backend (EV_A))
1635 { 1988 {
1636#ifndef _WIN32 1989#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 1990 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 1991 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 1992 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1993 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 1994#endif
… …
1649 2002
1650void 2003void
1651ev_default_destroy (void) 2004ev_default_destroy (void)
1652{ 2005{
1653#if EV_MULTIPLICITY 2006#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr; 2007 EV_P = ev_default_loop_ptr;
1655#endif 2008#endif
1656 2009
1657#ifndef _WIN32 2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
1658 ev_ref (EV_A); /* child watcher */ 2013 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev); 2014 ev_signal_stop (EV_A_ &childev);
1660#endif 2015#endif
1661 2016
1662 loop_destroy (EV_A); 2017 loop_destroy (EV_A);
… …
1664 2019
1665void 2020void
1666ev_default_fork (void) 2021ev_default_fork (void)
1667{ 2022{
1668#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr; 2024 EV_P = ev_default_loop_ptr;
1670#endif 2025#endif
1671 2026
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2027 postfork = 1; /* must be in line with ev_loop_fork */
1674} 2028}
1675 2029
1676/*****************************************************************************/ 2030/*****************************************************************************/
1677 2031
1678void 2032void
1679ev_invoke (EV_P_ void *w, int revents) 2033ev_invoke (EV_P_ void *w, int revents)
1680{ 2034{
1681 EV_CB_INVOKE ((W)w, revents); 2035 EV_CB_INVOKE ((W)w, revents);
1682} 2036}
1683 2037
1684void inline_speed 2038unsigned int
1685call_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)
1686{ 2052{
1687 int pri; 2053 int pri;
1688 2054
1689 for (pri = NUMPRI; pri--; ) 2055 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2056 while (pendingcnt [pri])
1691 { 2057 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2059
1694 if (expect_true (p->w))
1695 {
1696 /*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 */
1697 2062
1698 p->w->pending = 0; 2063 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2064 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2065 EV_FREQUENT_CHECK;
1701 }
1702 } 2066 }
1703} 2067}
1704 2068
1705#if EV_IDLE_ENABLE 2069#if EV_IDLE_ENABLE
1706void inline_size 2070/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */
2072inline_size void
1707idle_reify (EV_P) 2073idle_reify (EV_P)
1708{ 2074{
1709 if (expect_false (idleall)) 2075 if (expect_false (idleall))
1710 { 2076 {
1711 int pri; 2077 int pri;
… …
1723 } 2089 }
1724 } 2090 }
1725} 2091}
1726#endif 2092#endif
1727 2093
1728void inline_size 2094/* make timers pending */
2095inline_size void
1729timers_reify (EV_P) 2096timers_reify (EV_P)
1730{ 2097{
1731 EV_FREQUENT_CHECK; 2098 EV_FREQUENT_CHECK;
1732 2099
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2100 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2101 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2102 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 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 {
1742 ev_at (w) += w->repeat; 2111 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2112 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2113 ev_at (w) = mn_now;
1745 2114
1746 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.));
1747 2116
1748 ANHE_at_cache (timers [HEAP0]); 2117 ANHE_at_cache (timers [HEAP0]);
1749 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);
1750 } 2125 }
1751 else 2126 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2127
1754 EV_FREQUENT_CHECK; 2128 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2129 }
1757} 2130}
1758 2131
1759#if EV_PERIODIC_ENABLE 2132#if EV_PERIODIC_ENABLE
1760void inline_size 2133/* make periodics pending */
2134inline_size void
1761periodics_reify (EV_P) 2135periodics_reify (EV_P)
1762{ 2136{
1763 EV_FREQUENT_CHECK; 2137 EV_FREQUENT_CHECK;
1764 2138
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2140 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2141 int feed_count = 0;
1768 2142
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2143 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 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 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2152 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2153
1776 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));
1777 2155
1778 ANHE_at_cache (periodics [HEAP0]); 2156 ANHE_at_cache (periodics [HEAP0]);
1779 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);
1780 } 2183 }
1781 else if (w->interval) 2184 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2185
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2186 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2187 }
1806} 2188}
1807 2189
2190/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2192static void noinline
1809periodics_reschedule (EV_P) 2193periodics_reschedule (EV_P)
1810{ 2194{
1811 int i; 2195 int i;
1812 2196
… …
1825 2209
1826 reheap (periodics, periodiccnt); 2210 reheap (periodics, periodiccnt);
1827} 2211}
1828#endif 2212#endif
1829 2213
1830void 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
1831time_update (EV_P_ ev_tstamp max_block) 2231time_update (EV_P_ ev_tstamp max_block)
1832{ 2232{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2233#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2234 if (expect_true (have_monotonic))
1837 { 2235 {
2236 int i;
1838 ev_tstamp odiff = rtmn_diff; 2237 ev_tstamp odiff = rtmn_diff;
1839 2238
1840 mn_now = get_clock (); 2239 mn_now = get_clock ();
1841 2240
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2241 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1868 ev_rt_now = ev_time (); 2267 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2268 mn_now = get_clock ();
1870 now_floor = mn_now; 2269 now_floor = mn_now;
1871 } 2270 }
1872 2271
2272 /* no timer adjustment, as the monotonic clock doesn't jump */
2273 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2274# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2275 periodics_reschedule (EV_A);
1875# endif 2276# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2277 }
1879 else 2278 else
1880#endif 2279#endif
1881 { 2280 {
1882 ev_rt_now = ev_time (); 2281 ev_rt_now = ev_time ();
1883 2282
1884 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))
1885 { 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);
1886#if EV_PERIODIC_ENABLE 2287#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2288 periodics_reschedule (EV_A);
1888#endif 2289#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2290 }
1897 2291
1898 mn_now = ev_rt_now; 2292 mn_now = ev_rt_now;
1899 } 2293 }
1900} 2294}
1901 2295
1902void 2296void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2297ev_loop (EV_P_ int flags)
1924{ 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
1925 loop_done = EVUNLOOP_CANCEL; 2305 loop_done = EVUNLOOP_CANCEL;
1926 2306
1927 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 */
1928 2308
1929 do 2309 do
1930 { 2310 {
1931#if EV_VERIFY >= 2 2311#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2312 ev_verify (EV_A);
1933#endif 2313#endif
1934 2314
1935#ifndef _WIN32 2315#ifndef _WIN32
1936 if (expect_false (curpid)) /* penalise the forking check even more */ 2316 if (expect_false (curpid)) /* penalise the forking check even more */
1937 if (expect_false (getpid () != curpid)) 2317 if (expect_false (getpid () != curpid))
… …
1945 /* we might have forked, so queue fork handlers */ 2325 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2326 if (expect_false (postfork))
1947 if (forkcnt) 2327 if (forkcnt)
1948 { 2328 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2329 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2330 EV_INVOKE_PENDING;
1951 } 2331 }
1952#endif 2332#endif
1953 2333
2334#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2335 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2336 if (expect_false (preparecnt))
1956 { 2337 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2338 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2339 EV_INVOKE_PENDING;
1959 } 2340 }
2341#endif
1960 2342
1961 if (expect_false (!activecnt)) 2343 if (expect_false (loop_done))
1962 break; 2344 break;
1963 2345
1964 /* we might have forked, so reify kernel state if necessary */ 2346 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2347 if (expect_false (postfork))
1966 loop_fork (EV_A); 2348 loop_fork (EV_A);
… …
1973 ev_tstamp waittime = 0.; 2355 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2356 ev_tstamp sleeptime = 0.;
1975 2357
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1977 { 2359 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
1978 /* update time to cancel out callback processing overhead */ 2363 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100); 2364 time_update (EV_A_ 1e100);
1980 2365
1981 waittime = MAX_BLOCKTIME; 2366 waittime = MAX_BLOCKTIME;
1982 2367
… …
1992 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;
1993 if (waittime > to) waittime = to; 2378 if (waittime > to) waittime = to;
1994 } 2379 }
1995#endif 2380#endif
1996 2381
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 2383 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 2384 waittime = timeout_blocktime;
1999 2385
2000 sleeptime = waittime - backend_fudge; 2386 /* extra check because io_blocktime is commonly 0 */
2001
2002 if (expect_true (sleeptime > io_blocktime)) 2387 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 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 {
2007 ev_sleep (sleeptime); 2396 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 2397 waittime -= sleeptime;
2398 }
2009 } 2399 }
2010 } 2400 }
2011 2401
2402#if EV_FEATURE_API
2012 ++loop_count; 2403 ++loop_count;
2404#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2013 backend_poll (EV_A_ waittime); 2406 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2014 2408
2015 /* update ev_rt_now, do magic */ 2409 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 2410 time_update (EV_A_ waittime + sleeptime);
2017 } 2411 }
2018 2412
… …
2025#if EV_IDLE_ENABLE 2419#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 2420 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 2421 idle_reify (EV_A);
2028#endif 2422#endif
2029 2423
2424#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 2425 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 2426 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2427 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2428#endif
2033 2429
2034 call_pending (EV_A); 2430 EV_INVOKE_PENDING;
2035 } 2431 }
2036 while (expect_true ( 2432 while (expect_true (
2037 activecnt 2433 activecnt
2038 && !loop_done 2434 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2040 )); 2436 ));
2041 2437
2042 if (loop_done == EVUNLOOP_ONE) 2438 if (loop_done == EVUNLOOP_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 2439 loop_done = EVUNLOOP_CANCEL;
2440
2441#if EV_FEATURE_API
2442 --loop_depth;
2443#endif
2044} 2444}
2045 2445
2046void 2446void
2047ev_unloop (EV_P_ int how) 2447ev_unloop (EV_P_ int how)
2048{ 2448{
2049 loop_done = how; 2449 loop_done = how;
2050} 2450}
2051 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
2052/*****************************************************************************/ 2489/*****************************************************************************/
2490/* singly-linked list management, used when the expected list length is short */
2053 2491
2054void inline_size 2492inline_size void
2055wlist_add (WL *head, WL elem) 2493wlist_add (WL *head, WL elem)
2056{ 2494{
2057 elem->next = *head; 2495 elem->next = *head;
2058 *head = elem; 2496 *head = elem;
2059} 2497}
2060 2498
2061void inline_size 2499inline_size void
2062wlist_del (WL *head, WL elem) 2500wlist_del (WL *head, WL elem)
2063{ 2501{
2064 while (*head) 2502 while (*head)
2065 { 2503 {
2066 if (*head == elem) 2504 if (expect_true (*head == elem))
2067 { 2505 {
2068 *head = elem->next; 2506 *head = elem->next;
2069 return; 2507 break;
2070 } 2508 }
2071 2509
2072 head = &(*head)->next; 2510 head = &(*head)->next;
2073 } 2511 }
2074} 2512}
2075 2513
2076void inline_speed 2514/* internal, faster, version of ev_clear_pending */
2515inline_speed void
2077clear_pending (EV_P_ W w) 2516clear_pending (EV_P_ W w)
2078{ 2517{
2079 if (w->pending) 2518 if (w->pending)
2080 { 2519 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2520 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 2521 w->pending = 0;
2083 } 2522 }
2084} 2523}
2085 2524
2086int 2525int
… …
2090 int pending = w_->pending; 2529 int pending = w_->pending;
2091 2530
2092 if (expect_true (pending)) 2531 if (expect_true (pending))
2093 { 2532 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2533 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2534 p->w = (W)&pending_w;
2095 w_->pending = 0; 2535 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 2536 return p->events;
2098 } 2537 }
2099 else 2538 else
2100 return 0; 2539 return 0;
2101} 2540}
2102 2541
2103void inline_size 2542inline_size void
2104pri_adjust (EV_P_ W w) 2543pri_adjust (EV_P_ W w)
2105{ 2544{
2106 int pri = w->priority; 2545 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2546 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2547 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 2548 ev_set_priority (w, pri);
2110} 2549}
2111 2550
2112void inline_speed 2551inline_speed void
2113ev_start (EV_P_ W w, int active) 2552ev_start (EV_P_ W w, int active)
2114{ 2553{
2115 pri_adjust (EV_A_ w); 2554 pri_adjust (EV_A_ w);
2116 w->active = active; 2555 w->active = active;
2117 ev_ref (EV_A); 2556 ev_ref (EV_A);
2118} 2557}
2119 2558
2120void inline_size 2559inline_size void
2121ev_stop (EV_P_ W w) 2560ev_stop (EV_P_ W w)
2122{ 2561{
2123 ev_unref (EV_A); 2562 ev_unref (EV_A);
2124 w->active = 0; 2563 w->active = 0;
2125} 2564}
… …
2132 int fd = w->fd; 2571 int fd = w->fd;
2133 2572
2134 if (expect_false (ev_is_active (w))) 2573 if (expect_false (ev_is_active (w)))
2135 return; 2574 return;
2136 2575
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 2576 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2577 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 2578
2139 EV_FREQUENT_CHECK; 2579 EV_FREQUENT_CHECK;
2140 2580
2141 ev_start (EV_A_ (W)w, 1); 2581 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 2583 wlist_add (&anfds[fd].head, (WL)w);
2144 2584
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 2586 w->events &= ~EV__IOFDSET;
2147 2587
2148 EV_FREQUENT_CHECK; 2588 EV_FREQUENT_CHECK;
2149} 2589}
2150 2590
2151void noinline 2591void noinline
… …
2153{ 2593{
2154 clear_pending (EV_A_ (W)w); 2594 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 2595 if (expect_false (!ev_is_active (w)))
2156 return; 2596 return;
2157 2597
2158 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));
2159 2599
2160 EV_FREQUENT_CHECK; 2600 EV_FREQUENT_CHECK;
2161 2601
2162 wlist_del (&anfds[w->fd].head, (WL)w); 2602 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 2603 ev_stop (EV_A_ (W)w);
2164 2604
2165 fd_change (EV_A_ w->fd, 1); 2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2166 2606
2167 EV_FREQUENT_CHECK; 2607 EV_FREQUENT_CHECK;
2168} 2608}
2169 2609
2170void noinline 2610void noinline
… …
2173 if (expect_false (ev_is_active (w))) 2613 if (expect_false (ev_is_active (w)))
2174 return; 2614 return;
2175 2615
2176 ev_at (w) += mn_now; 2616 ev_at (w) += mn_now;
2177 2617
2178 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.));
2179 2619
2180 EV_FREQUENT_CHECK; 2620 EV_FREQUENT_CHECK;
2181 2621
2182 ++timercnt; 2622 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2623 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 2626 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 2627 upheap (timers, ev_active (w));
2188 2628
2189 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2190 2630
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 2632}
2193 2633
2194void noinline 2634void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 2635ev_timer_stop (EV_P_ ev_timer *w)
2196{ 2636{
… …
2201 EV_FREQUENT_CHECK; 2641 EV_FREQUENT_CHECK;
2202 2642
2203 { 2643 {
2204 int active = ev_active (w); 2644 int active = ev_active (w);
2205 2645
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2646 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 2647
2208 --timercnt; 2648 --timercnt;
2209 2649
2210 if (expect_true (active < timercnt + HEAP0)) 2650 if (expect_true (active < timercnt + HEAP0))
2211 { 2651 {
2212 timers [active] = timers [timercnt + HEAP0]; 2652 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 2653 adjustheap (timers, timercnt, active);
2214 } 2654 }
2215 } 2655 }
2216 2656
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 2657 ev_at (w) -= mn_now;
2220 2658
2221 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
2660
2661 EV_FREQUENT_CHECK;
2222} 2662}
2223 2663
2224void noinline 2664void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 2665ev_timer_again (EV_P_ ev_timer *w)
2226{ 2666{
… …
2244 } 2684 }
2245 2685
2246 EV_FREQUENT_CHECK; 2686 EV_FREQUENT_CHECK;
2247} 2687}
2248 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
2249#if EV_PERIODIC_ENABLE 2695#if EV_PERIODIC_ENABLE
2250void noinline 2696void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 2697ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 2698{
2253 if (expect_false (ev_is_active (w))) 2699 if (expect_false (ev_is_active (w)))
… …
2255 2701
2256 if (w->reschedule_cb) 2702 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 2704 else if (w->interval)
2259 { 2705 {
2260 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.));
2261 /* 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 */
2262 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;
2263 } 2709 }
2264 else 2710 else
2265 ev_at (w) = w->offset; 2711 ev_at (w) = w->offset;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 2719 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 2720 upheap (periodics, ev_active (w));
2275 2721
2276 EV_FREQUENT_CHECK; 2722 EV_FREQUENT_CHECK;
2277 2723
2278 /*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));*/
2279} 2725}
2280 2726
2281void noinline 2727void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 2728ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 2729{
… …
2288 EV_FREQUENT_CHECK; 2734 EV_FREQUENT_CHECK;
2289 2735
2290 { 2736 {
2291 int active = ev_active (w); 2737 int active = ev_active (w);
2292 2738
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2739 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 2740
2295 --periodiccnt; 2741 --periodiccnt;
2296 2742
2297 if (expect_true (active < periodiccnt + HEAP0)) 2743 if (expect_true (active < periodiccnt + HEAP0))
2298 { 2744 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 2745 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 2746 adjustheap (periodics, periodiccnt, active);
2301 } 2747 }
2302 } 2748 }
2303 2749
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 2750 ev_stop (EV_A_ (W)w);
2751
2752 EV_FREQUENT_CHECK;
2307} 2753}
2308 2754
2309void noinline 2755void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 2756ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 2757{
… …
2317 2763
2318#ifndef SA_RESTART 2764#ifndef SA_RESTART
2319# define SA_RESTART 0 2765# define SA_RESTART 0
2320#endif 2766#endif
2321 2767
2768#if EV_SIGNAL_ENABLE
2769
2322void noinline 2770void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 2771ev_signal_start (EV_P_ ev_signal *w)
2324{ 2772{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 2773 if (expect_false (ev_is_active (w)))
2329 return; 2774 return;
2330 2775
2331 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));
2332 2777
2333 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));
2334 2781
2335 EV_FREQUENT_CHECK; 2782 signals [w->signum - 1].loop = EV_A;
2783#endif
2336 2784
2785 EV_FREQUENT_CHECK;
2786
2787#if EV_USE_SIGNALFD
2788 if (sigfd == -2)
2337 { 2789 {
2338#ifndef _WIN32 2790 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 2791 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 2792 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 2793
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2794 if (sigfd >= 0)
2795 {
2796 fd_intern (sigfd); /* doing it twice will not hurt */
2345 2797
2346#ifndef _WIN32 2798 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 2799
2348#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 }
2349 } 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
2350 2816
2351 ev_start (EV_A_ (W)w, 1); 2817 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 2818 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 2819
2354 if (!((WL)w)->next) 2820 if (!((WL)w)->next)
2821# if EV_USE_SIGNALFD
2822 if (sigfd < 0) /*TODO*/
2823# endif
2355 { 2824 {
2356#if _WIN32 2825# ifdef _WIN32
2826 evpipe_init (EV_A);
2827
2357 signal (w->signum, ev_sighandler); 2828 signal (w->signum, ev_sighandler);
2358#else 2829# else
2359 struct sigaction sa; 2830 struct sigaction sa;
2831
2832 evpipe_init (EV_A);
2833
2360 sa.sa_handler = ev_sighandler; 2834 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 2835 sigfillset (&sa.sa_mask);
2362 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 */
2363 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);
2364#endif 2842#endif
2365 } 2843 }
2366 2844
2367 EV_FREQUENT_CHECK; 2845 EV_FREQUENT_CHECK;
2368} 2846}
2369 2847
2370void noinline 2848void noinline
… …
2378 2856
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 2857 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 2858 ev_stop (EV_A_ (W)w);
2381 2859
2382 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
2383 signal (w->signum, SIG_DFL); 2879 signal (w->signum, SIG_DFL);
2880 }
2384 2881
2385 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
2386} 2883}
2884
2885#endif
2886
2887#if EV_CHILD_ENABLE
2387 2888
2388void 2889void
2389ev_child_start (EV_P_ ev_child *w) 2890ev_child_start (EV_P_ ev_child *w)
2390{ 2891{
2391#if EV_MULTIPLICITY 2892#if EV_MULTIPLICITY
2392 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));
2393#endif 2894#endif
2394 if (expect_false (ev_is_active (w))) 2895 if (expect_false (ev_is_active (w)))
2395 return; 2896 return;
2396 2897
2397 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2398 2899
2399 ev_start (EV_A_ (W)w, 1); 2900 ev_start (EV_A_ (W)w, 1);
2400 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2901 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2401 2902
2402 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2403} 2904}
2404 2905
2405void 2906void
… …
2409 if (expect_false (!ev_is_active (w))) 2910 if (expect_false (!ev_is_active (w)))
2410 return; 2911 return;
2411 2912
2412 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2413 2914
2414 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2915 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2415 ev_stop (EV_A_ (W)w); 2916 ev_stop (EV_A_ (W)w);
2416 2917
2417 EV_FREQUENT_CHECK; 2918 EV_FREQUENT_CHECK;
2418} 2919}
2920
2921#endif
2419 2922
2420#if EV_STAT_ENABLE 2923#if EV_STAT_ENABLE
2421 2924
2422# ifdef _WIN32 2925# ifdef _WIN32
2423# undef lstat 2926# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 2927# define lstat(a,b) _stati64 (a,b)
2425# endif 2928# endif
2426 2929
2427#define DEF_STAT_INTERVAL 5.0074891 2930#define DEF_STAT_INTERVAL 5.0074891
2931#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 2932#define MIN_STAT_INTERVAL 0.1074891
2429 2933
2430static 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);
2431 2935
2432#if EV_USE_INOTIFY 2936#if EV_USE_INOTIFY
2433# 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)
2434 2940
2435static void noinline 2941static void noinline
2436infy_add (EV_P_ ev_stat *w) 2942infy_add (EV_P_ ev_stat *w)
2437{ 2943{
2438 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);
2439 2945
2440 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 */
2441 { 2966 }
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2967 else
2968 {
2969 /* can't use inotify, continue to stat */
2970 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443 2971
2444 /* monitor some parent directory for speedup hints */ 2972 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2973 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 2974 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2975 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 2976 {
2449 char path [4096]; 2977 char path [4096];
2450 strcpy (path, w->path); 2978 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2982 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2983 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 2984
2457 char *pend = strrchr (path, '/'); 2985 char *pend = strrchr (path, '/');
2458 2986
2459 if (!pend) 2987 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 2988 break;
2461 2989
2462 *pend = 0; 2990 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 2991 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 2992 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 2994 }
2467 } 2995 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 2996
2471 if (w->wd >= 0) 2997 if (w->wd >= 0)
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2998 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2999
3000 /* now re-arm timer, if required */
3001 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3002 ev_timer_again (EV_A_ &w->timer);
3003 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473} 3004}
2474 3005
2475static void noinline 3006static void noinline
2476infy_del (EV_P_ ev_stat *w) 3007infy_del (EV_P_ ev_stat *w)
2477{ 3008{
… …
2480 3011
2481 if (wd < 0) 3012 if (wd < 0)
2482 return; 3013 return;
2483 3014
2484 w->wd = -2; 3015 w->wd = -2;
2485 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3016 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2486 wlist_del (&fs_hash [slot].head, (WL)w); 3017 wlist_del (&fs_hash [slot].head, (WL)w);
2487 3018
2488 /* remove this watcher, if others are watching it, they will rearm */ 3019 /* remove this watcher, if others are watching it, they will rearm */
2489 inotify_rm_watch (fs_fd, wd); 3020 inotify_rm_watch (fs_fd, wd);
2490} 3021}
2491 3022
2492static void noinline 3023static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3025{
2495 if (slot < 0) 3026 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3027 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3029 infy_wd (EV_A_ slot, wd, ev);
2499 else 3030 else
2500 { 3031 {
2501 WL w_; 3032 WL w_;
2502 3033
2503 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3034 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2504 { 3035 {
2505 ev_stat *w = (ev_stat *)w_; 3036 ev_stat *w = (ev_stat *)w_;
2506 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 */
2507 3038
2508 if (w->wd == wd || wd == -1) 3039 if (w->wd == wd || wd == -1)
2509 { 3040 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3041 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3042 {
3043 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2512 w->wd = -1; 3044 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3045 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3046 }
2515 3047
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3048 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3053
2522static void 3054static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3055infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3056{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3057 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3058 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3059 int len = read (fs_fd, buf, sizeof (buf));
2529 3060
2530 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);
2531 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 }
2532} 3067}
2533 3068
2534void 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
3102ev_check_2625 (EV_P)
3103{
3104 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */
3107 if (ev_linux_version () < 0x020619)
3108 return;
3109
3110 fs_2625 = 1;
3111}
3112
3113inline_size int
3114infy_newfd (void)
3115{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0)
3119 return fd;
3120#endif
3121 return inotify_init ();
3122}
3123
3124inline_size void
2535infy_init (EV_P) 3125infy_init (EV_P)
2536{ 3126{
2537 if (fs_fd != -2) 3127 if (fs_fd != -2)
2538 return; 3128 return;
2539 3129
3130 fs_fd = -1;
3131
3132 ev_check_2625 (EV_A);
3133
2540 fs_fd = inotify_init (); 3134 fs_fd = infy_newfd ();
2541 3135
2542 if (fs_fd >= 0) 3136 if (fs_fd >= 0)
2543 { 3137 {
3138 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3139 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3140 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3141 ev_io_start (EV_A_ &fs_w);
3142 ev_unref (EV_A);
2547 } 3143 }
2548} 3144}
2549 3145
2550void inline_size 3146inline_size void
2551infy_fork (EV_P) 3147infy_fork (EV_P)
2552{ 3148{
2553 int slot; 3149 int slot;
2554 3150
2555 if (fs_fd < 0) 3151 if (fs_fd < 0)
2556 return; 3152 return;
2557 3153
3154 ev_ref (EV_A);
3155 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3156 close (fs_fd);
2559 fs_fd = inotify_init (); 3157 fs_fd = infy_newfd ();
2560 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
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3167 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2562 { 3168 {
2563 WL w_ = fs_hash [slot].head; 3169 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3170 fs_hash [slot].head = 0;
2565 3171
2566 while (w_) 3172 while (w_)
… …
2571 w->wd = -1; 3177 w->wd = -1;
2572 3178
2573 if (fs_fd >= 0) 3179 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3180 infy_add (EV_A_ w); /* re-add, no matter what */
2575 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);
2576 ev_timer_start (EV_A_ &w->timer); 3185 ev_timer_again (EV_A_ &w->timer);
3186 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3187 }
2577 } 3188 }
2578
2579 } 3189 }
2580} 3190}
2581 3191
2582#endif 3192#endif
2583 3193
… …
2599static void noinline 3209static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3210stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3211{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3213
2604 /* we copy this here each the time so that */ 3214 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3215 ev_stat_stat (EV_A_ w);
2608 3216
2609 /* 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 */
2610 if ( 3218 if (
2611 w->prev.st_dev != w->attr.st_dev 3219 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3220 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3221 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3222 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3223 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3224 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3225 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3226 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3227 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3228 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3229 || prev.st_ctime != w->attr.st_ctime
2622 ) { 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
2623 #if EV_USE_INOTIFY 3236 #if EV_USE_INOTIFY
3237 if (fs_fd >= 0)
3238 {
2624 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3241 ev_stat_stat (EV_A_ w); /* avoid race... */
3242 }
2627 #endif 3243 #endif
2628 3244
2629 ev_feed_event (EV_A_ w, EV_STAT); 3245 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3246 }
2631} 3247}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3250ev_stat_start (EV_P_ ev_stat *w)
2635{ 3251{
2636 if (expect_false (ev_is_active (w))) 3252 if (expect_false (ev_is_active (w)))
2637 return; 3253 return;
2638 3254
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3255 ev_stat_stat (EV_A_ w);
2644 3256
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3258 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3259
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3260 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3261 ev_set_priority (&w->timer, ev_priority (w));
2650 3262
2651#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3264 infy_init (EV_A);
2653 3265
2654 if (fs_fd >= 0) 3266 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3267 infy_add (EV_A_ w);
2656 else 3268 else
2657#endif 3269#endif
3270 {
2658 ev_timer_start (EV_A_ &w->timer); 3271 ev_timer_again (EV_A_ &w->timer);
3272 ev_unref (EV_A);
3273 }
2659 3274
2660 ev_start (EV_A_ (W)w, 1); 3275 ev_start (EV_A_ (W)w, 1);
2661 3276
2662 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2663} 3278}
… …
2672 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2673 3288
2674#if EV_USE_INOTIFY 3289#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3290 infy_del (EV_A_ w);
2676#endif 3291#endif
3292
3293 if (ev_is_active (&w->timer))
3294 {
3295 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3296 ev_timer_stop (EV_A_ &w->timer);
3297 }
2678 3298
2679 ev_stop (EV_A_ (W)w); 3299 ev_stop (EV_A_ (W)w);
2680 3300
2681 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2682} 3302}
… …
2727 3347
2728 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2729} 3349}
2730#endif 3350#endif
2731 3351
3352#if EV_PREPARE_ENABLE
2732void 3353void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3354ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3355{
2735 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2736 return; 3357 return;
… …
2762 3383
2763 ev_stop (EV_A_ (W)w); 3384 ev_stop (EV_A_ (W)w);
2764 3385
2765 EV_FREQUENT_CHECK; 3386 EV_FREQUENT_CHECK;
2766} 3387}
3388#endif
2767 3389
3390#if EV_CHECK_ENABLE
2768void 3391void
2769ev_check_start (EV_P_ ev_check *w) 3392ev_check_start (EV_P_ ev_check *w)
2770{ 3393{
2771 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2772 return; 3395 return;
… …
2798 3421
2799 ev_stop (EV_A_ (W)w); 3422 ev_stop (EV_A_ (W)w);
2800 3423
2801 EV_FREQUENT_CHECK; 3424 EV_FREQUENT_CHECK;
2802} 3425}
3426#endif
2803 3427
2804#if EV_EMBED_ENABLE 3428#if EV_EMBED_ENABLE
2805void noinline 3429void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 3430ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 3431{
… …
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 3448{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3449 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 3450
2827 { 3451 {
2828 struct ev_loop *loop = w->other; 3452 EV_P = w->other;
2829 3453
2830 while (fdchangecnt) 3454 while (fdchangecnt)
2831 { 3455 {
2832 fd_reify (EV_A); 3456 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3457 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2838static void 3462static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 3464{
2841 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));
2842 3466
3467 ev_embed_stop (EV_A_ w);
3468
2843 { 3469 {
2844 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2845 3471
2846 ev_loop_fork (EV_A); 3472 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2847 } 3474 }
3475
3476 ev_embed_start (EV_A_ w);
2848} 3477}
2849 3478
2850#if 0 3479#if 0
2851static void 3480static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3481embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2860{ 3489{
2861 if (expect_false (ev_is_active (w))) 3490 if (expect_false (ev_is_active (w)))
2862 return; 3491 return;
2863 3492
2864 { 3493 {
2865 struct ev_loop *loop = w->other; 3494 EV_P = w->other;
2866 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 ()));
2867 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);
2868 } 3497 }
2869 3498
2870 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2871 3500
… …
2897 3526
2898 ev_io_stop (EV_A_ &w->io); 3527 ev_io_stop (EV_A_ &w->io);
2899 ev_prepare_stop (EV_A_ &w->prepare); 3528 ev_prepare_stop (EV_A_ &w->prepare);
2900 ev_fork_stop (EV_A_ &w->fork); 3529 ev_fork_stop (EV_A_ &w->fork);
2901 3530
3531 ev_stop (EV_A_ (W)w);
3532
2902 EV_FREQUENT_CHECK; 3533 EV_FREQUENT_CHECK;
2903} 3534}
2904#endif 3535#endif
2905 3536
2906#if EV_FORK_ENABLE 3537#if EV_FORK_ENABLE
… …
2982 3613
2983void 3614void
2984ev_async_send (EV_P_ ev_async *w) 3615ev_async_send (EV_P_ ev_async *w)
2985{ 3616{
2986 w->sent = 1; 3617 w->sent = 1;
2987 evpipe_write (EV_A_ &gotasync); 3618 evpipe_write (EV_A_ &async_pending);
2988} 3619}
2989#endif 3620#endif
2990 3621
2991/*****************************************************************************/ 3622/*****************************************************************************/
2992 3623
… …
3012} 3643}
3013 3644
3014static void 3645static void
3015once_cb_io (EV_P_ ev_io *w, int revents) 3646once_cb_io (EV_P_ ev_io *w, int revents)
3016{ 3647{
3017 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3648 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3649
3650 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
3018} 3651}
3019 3652
3020static void 3653static void
3021once_cb_to (EV_P_ ev_timer *w, int revents) 3654once_cb_to (EV_P_ ev_timer *w, int revents)
3022{ 3655{
3023 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3656 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3657
3658 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3024} 3659}
3025 3660
3026void 3661void
3027ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3662ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3028{ 3663{
3029 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));
3030 3665
3031 if (expect_false (!once)) 3666 if (expect_false (!once))
3032 { 3667 {
3033 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3668 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3034 return; 3669 return;
3035 } 3670 }
3036 3671
3037 once->cb = cb; 3672 once->cb = cb;
3038 once->arg = arg; 3673 once->arg = arg;
… …
3050 ev_timer_set (&once->to, timeout, 0.); 3685 ev_timer_set (&once->to, timeout, 0.);
3051 ev_timer_start (EV_A_ &once->to); 3686 ev_timer_start (EV_A_ &once->to);
3052 } 3687 }
3053} 3688}
3054 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
3055#if EV_MULTIPLICITY 3806#if EV_MULTIPLICITY
3056 #include "ev_wrap.h" 3807 #include "ev_wrap.h"
3057#endif 3808#endif
3058 3809
3059#ifdef __cplusplus 3810#ifdef __cplusplus

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