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Comparing libev/ev.c (file contents):
Revision 1.287 by root, Mon Apr 20 19:45:58 2009 UTC vs.
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# include "ev.h" 185# include "ev.h"
164#endif 186#endif
187
188EV_CPP(extern "C" {)
165 189
166#ifndef _WIN32 190#ifndef _WIN32
167# include <sys/time.h> 191# include <sys/time.h>
168# include <sys/wait.h> 192# include <sys/wait.h>
169# include <unistd.h> 193# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 197# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
176# endif 200# endif
201# undef EV_AVOID_STDIO
177#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
178 211
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
180 245
181#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 249# else
185# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
186# endif 251# endif
187#endif 252#endif
188 253
189#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 257# else
193# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
194# endif 259# endif
195#endif 260#endif
196 261
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 264#endif
200 265
201#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 269# else
205# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
206# endif 271# endif
207#endif 272#endif
208 273
209#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 276#endif
212 277
213#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
214# ifdef _WIN32 279# ifdef _WIN32
215# define EV_USE_POLL 0 280# define EV_USE_POLL 0
216# else 281# else
217# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 283# endif
219#endif 284#endif
220 285
221#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 289# else
225# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
226# endif 291# endif
227#endif 292#endif
228 293
… …
234# define EV_USE_PORT 0 299# define EV_USE_PORT 0
235#endif 300#endif
236 301
237#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 305# else
241# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
242# endif 307# endif
243#endif 308#endif
244 309
245#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 312#endif
252 313
253#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 316#endif
260 317
261#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 321# else
265# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
266# endif 331# endif
267#endif 332#endif
268 333
269#if 0 /* debugging */ 334#if 0 /* debugging */
270# define EV_VERIFY 3 335# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
273#endif 338#endif
274 339
275#ifndef EV_VERIFY 340#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 342#endif
278 343
279#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 346#endif
282 347
283#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
285#endif 364#endif
286 365
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
288 373
289#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
292#endif 377#endif
… …
300# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
302#endif 387#endif
303 388
304#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 392# include <sys/select.h>
307# endif 393# endif
308#endif 394#endif
309 395
310#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 397# include <sys/statfs.h>
313# include <sys/inotify.h> 398# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
320 405
321#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 407# include <winsock.h>
323#endif 408#endif
324 409
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 412# include <stdint.h>
337# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
338extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
339# endif 415# endif
340int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 417# ifdef O_CLOEXEC
342} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
343# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
344#endif 446#endif
345 447
346/**/ 448/**/
347 449
348#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 452#else
351# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
352#endif 454#endif
353 455
354/* 456/*
355 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 459 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 462
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 510 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
371#else 517#else
372# define expect(expr,value) (expr) 518 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 533 #endif
534#endif
378 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif
546
547#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5)
549 #if __x86
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
553 #elif __amd64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
557 #endif
558 #endif
559#endif
560
561#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4)
563 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32)
572 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
576 #endif
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 /*
581 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library
585 * of your system.
586 */
587 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif
596
597/*****************************************************************************/
598
599#define ECB_C99 (__STDC_VERSION__ >= 199901L)
600
601#if __cplusplus
602 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__
605#elif ECB_C99
606 #define ecb_inline static inline
607#else
608 #define ecb_inline static
609#endif
610
611#if ECB_GCC_VERSION(3,3)
612 #define ecb_restrict __restrict__
613#elif ECB_C99
614 #define ecb_restrict restrict
615#else
616 #define ecb_restrict
617#endif
618
619typedef int ecb_bool;
620
621#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a
624#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
625
626#define ecb_function_ ecb_inline
627
628#if ECB_GCC_VERSION(3,1)
629 #define ecb_attribute(attrlist) __attribute__(attrlist)
630 #define ecb_is_constant(expr) __builtin_constant_p (expr)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality)
638#endif
639
640/* no emulation for ecb_decltype */
641#if ECB_GCC_VERSION(4,5)
642 #define ecb_decltype(x) __decltype(x)
643#elif ECB_GCC_VERSION(3,0)
644 #define ecb_decltype(x) __typeof(x)
645#endif
646
647#define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__))
649#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__))
652
653#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__))
657#else
658 #define ecb_artificial
659 #define ecb_hot
660 #define ecb_cold
661#endif
662
663/* put around conditional expressions if you are very sure that the */
664/* expression is mostly true or mostly false. note that these return */
665/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 666#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 667#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
668/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr)
671
672/* count trailing zero bits and count # of one bits */
673#if ECB_GCC_VERSION(3,4)
674 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */
681#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
683 ecb_function_ int
684 ecb_ctz32 (uint32_t x)
685 {
686 int r = 0;
687
688 x &= ~x + 1; /* this isolates the lowest bit */
689
690#if ECB_branchless_on_i386
691 r += !!(x & 0xaaaaaaaa) << 0;
692 r += !!(x & 0xcccccccc) << 1;
693 r += !!(x & 0xf0f0f0f0) << 2;
694 r += !!(x & 0xff00ff00) << 3;
695 r += !!(x & 0xffff0000) << 4;
696#else
697 if (x & 0xaaaaaaaa) r += 1;
698 if (x & 0xcccccccc) r += 2;
699 if (x & 0xf0f0f0f0) r += 4;
700 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16;
702#endif
703
704 return r;
705 }
706
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
708 ecb_function_ int
709 ecb_ctz64 (uint64_t x)
710 {
711 int shift = x & 0xffffffffU ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift;
713 }
714
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
716 ecb_function_ int
717 ecb_popcount32 (uint32_t x)
718 {
719 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101;
723
724 return x >> 24;
725 }
726
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
728 ecb_function_ int ecb_ld32 (uint32_t x)
729 {
730 int r = 0;
731
732 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; }
737
738 return r;
739 }
740
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
742 ecb_function_ int ecb_ld64 (uint64_t x)
743 {
744 int r = 0;
745
746 if (x >> 32) { x >>= 32; r += 32; }
747
748 return r + ecb_ld32 (x);
749 }
750#endif
751
752/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
755ecb_function_ int
756ecb_popcount64 (uint64_t x)
757{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759}
760
761ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
762ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
763ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
764ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
765ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
766ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
767ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
768ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
769
770ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
771ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
772ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
773ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
774ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
775ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
776ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
777ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
778
779#if ECB_GCC_VERSION(4,3)
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
781 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #define ecb_bswap64(x) __builtin_bswap64 (x)
783#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
785 ecb_function_ uint16_t
786 ecb_bswap16 (uint16_t x)
787 {
788 return ecb_rotl16 (x, 8);
789 }
790
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
792 ecb_function_ uint32_t
793 ecb_bswap32 (uint32_t x)
794 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 }
797
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
799 ecb_function_ uint64_t
800 ecb_bswap64 (uint64_t x)
801 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 }
804#endif
805
806#if ECB_GCC_VERSION(4,5)
807 #define ecb_unreachable() __builtin_unreachable ()
808#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
811 ecb_function_ void ecb_unreachable (void) { }
812#endif
813
814/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
816
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
818ecb_function_ unsigned char
819ecb_byteorder_helper (void)
820{
821 const uint32_t u = 0x11223344;
822 return *(unsigned char *)&u;
823}
824
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
829
830#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
834#endif
835
836#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N>
839 static inline int ecb_array_length (const T (&arr)[N])
840 {
841 return N;
842 }
843#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif
846
847#endif
848
849/* ECB.H END */
850
851#define expect_false(cond) ecb_expect_false (cond)
852#define expect_true(cond) ecb_expect_true (cond)
853#define noinline ecb_noinline
854
381#define inline_size static inline 855#define inline_size ecb_inline
382 856
383#if EV_MINIMAL 857#if EV_FEATURE_CODE
858# define inline_speed ecb_inline
859#else
384# define inline_speed static noinline 860# define inline_speed static noinline
861#endif
862
863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
864
865#if EV_MINPRI == EV_MAXPRI
866# define ABSPRI(w) (((W)w), 0)
385#else 867#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 868# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
869#endif
391 870
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 871#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 872#define EMPTY2(a,b) /* used to suppress some warnings */
394 873
395typedef ev_watcher *W; 874typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 878#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 879#define ev_at(w) ((WT)(w))->at
401 880
402#if EV_USE_REALTIME 881#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 882/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 883/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 884static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 885#endif
407 886
408#if EV_USE_MONOTONIC 887#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 888static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 889#endif
411 890
891#ifndef EV_FD_TO_WIN32_HANDLE
892# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
893#endif
894#ifndef EV_WIN32_HANDLE_TO_FD
895# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
896#endif
897#ifndef EV_WIN32_CLOSE_FD
898# define EV_WIN32_CLOSE_FD(fd) close (fd)
899#endif
900
412#ifdef _WIN32 901#ifdef _WIN32
413# include "ev_win32.c" 902# include "ev_win32.c"
414#endif 903#endif
415 904
416/*****************************************************************************/ 905/*****************************************************************************/
417 906
907/* define a suitable floor function (only used by periodics atm) */
908
909#if EV_USE_FLOOR
910# include <math.h>
911# define ev_floor(v) floor (v)
912#else
913
914#include <float.h>
915
916/* a floor() replacement function, should be independent of ev_tstamp type */
917static ev_tstamp noinline
918ev_floor (ev_tstamp v)
919{
920 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
923#else
924 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
925#endif
926
927 /* argument too large for an unsigned long? */
928 if (expect_false (v >= shift))
929 {
930 ev_tstamp f;
931
932 if (v == v - 1.)
933 return v; /* very large number */
934
935 f = shift * ev_floor (v * (1. / shift));
936 return f + ev_floor (v - f);
937 }
938
939 /* special treatment for negative args? */
940 if (expect_false (v < 0.))
941 {
942 ev_tstamp f = -ev_floor (-v);
943
944 return f - (f == v ? 0 : 1);
945 }
946
947 /* fits into an unsigned long */
948 return (unsigned long)v;
949}
950
951#endif
952
953/*****************************************************************************/
954
955#ifdef __linux
956# include <sys/utsname.h>
957#endif
958
959static unsigned int noinline ecb_cold
960ev_linux_version (void)
961{
962#ifdef __linux
963 unsigned int v = 0;
964 struct utsname buf;
965 int i;
966 char *p = buf.release;
967
968 if (uname (&buf))
969 return 0;
970
971 for (i = 3+1; --i; )
972 {
973 unsigned int c = 0;
974
975 for (;;)
976 {
977 if (*p >= '0' && *p <= '9')
978 c = c * 10 + *p++ - '0';
979 else
980 {
981 p += *p == '.';
982 break;
983 }
984 }
985
986 v = (v << 8) | c;
987 }
988
989 return v;
990#else
991 return 0;
992#endif
993}
994
995/*****************************************************************************/
996
997#if EV_AVOID_STDIO
998static void noinline ecb_cold
999ev_printerr (const char *msg)
1000{
1001 write (STDERR_FILENO, msg, strlen (msg));
1002}
1003#endif
1004
418static void (*syserr_cb)(const char *msg); 1005static void (*syserr_cb)(const char *msg);
419 1006
420void 1007void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1008ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1009{
423 syserr_cb = cb; 1010 syserr_cb = cb;
424} 1011}
425 1012
426static void noinline 1013static void noinline ecb_cold
427ev_syserr (const char *msg) 1014ev_syserr (const char *msg)
428{ 1015{
429 if (!msg) 1016 if (!msg)
430 msg = "(libev) system error"; 1017 msg = "(libev) system error";
431 1018
432 if (syserr_cb) 1019 if (syserr_cb)
433 syserr_cb (msg); 1020 syserr_cb (msg);
434 else 1021 else
435 { 1022 {
1023#if EV_AVOID_STDIO
1024 ev_printerr (msg);
1025 ev_printerr (": ");
1026 ev_printerr (strerror (errno));
1027 ev_printerr ("\n");
1028#else
436 perror (msg); 1029 perror (msg);
1030#endif
437 abort (); 1031 abort ();
438 } 1032 }
439} 1033}
440 1034
441static void * 1035static void *
442ev_realloc_emul (void *ptr, long size) 1036ev_realloc_emul (void *ptr, long size)
443{ 1037{
1038#if __GLIBC__
1039 return realloc (ptr, size);
1040#else
444 /* some systems, notably openbsd and darwin, fail to properly 1041 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1042 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1043 * the single unix specification, so work around them here.
447 */ 1044 */
448 1045
449 if (size) 1046 if (size)
450 return realloc (ptr, size); 1047 return realloc (ptr, size);
451 1048
452 free (ptr); 1049 free (ptr);
453 return 0; 1050 return 0;
1051#endif
454} 1052}
455 1053
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1055
458void 1056void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1057ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1058{
461 alloc = cb; 1059 alloc = cb;
462} 1060}
463 1061
… …
466{ 1064{
467 ptr = alloc (ptr, size); 1065 ptr = alloc (ptr, size);
468 1066
469 if (!ptr && size) 1067 if (!ptr && size)
470 { 1068 {
1069#if EV_AVOID_STDIO
1070 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1071#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1072 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1073#endif
472 abort (); 1074 abort ();
473 } 1075 }
474 1076
475 return ptr; 1077 return ptr;
476} 1078}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1080#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1081#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1082
481/*****************************************************************************/ 1083/*****************************************************************************/
482 1084
1085/* set in reify when reification needed */
1086#define EV_ANFD_REIFY 1
1087
1088/* file descriptor info structure */
483typedef struct 1089typedef struct
484{ 1090{
485 WL head; 1091 WL head;
486 unsigned char events; 1092 unsigned char events; /* the events watched for */
487 unsigned char reify; 1093 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1094 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1095 unsigned char unused;
490#if EV_USE_EPOLL 1096#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1097 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1098#endif
493#if EV_SELECT_IS_WINSOCKET 1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1100 SOCKET handle;
495#endif 1101#endif
1102#if EV_USE_IOCP
1103 OVERLAPPED or, ow;
1104#endif
496} ANFD; 1105} ANFD;
497 1106
1107/* stores the pending event set for a given watcher */
498typedef struct 1108typedef struct
499{ 1109{
500 W w; 1110 W w;
501 int events; 1111 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1112} ANPENDING;
503 1113
504#if EV_USE_INOTIFY 1114#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1115/* hash table entry per inotify-id */
506typedef struct 1116typedef struct
… …
509} ANFS; 1119} ANFS;
510#endif 1120#endif
511 1121
512/* Heap Entry */ 1122/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1123#if EV_HEAP_CACHE_AT
1124 /* a heap element */
514 typedef struct { 1125 typedef struct {
515 ev_tstamp at; 1126 ev_tstamp at;
516 WT w; 1127 WT w;
517 } ANHE; 1128 } ANHE;
518 1129
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1130 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1131 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1132 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1133#else
1134 /* a heap element */
523 typedef WT ANHE; 1135 typedef WT ANHE;
524 1136
525 #define ANHE_w(he) (he) 1137 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1138 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1139 #define ANHE_at_cache(he)
… …
551 1163
552 static int ev_default_loop_ptr; 1164 static int ev_default_loop_ptr;
553 1165
554#endif 1166#endif
555 1167
1168#if EV_FEATURE_API
1169# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1170# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1171# define EV_INVOKE_PENDING invoke_cb (EV_A)
1172#else
1173# define EV_RELEASE_CB (void)0
1174# define EV_ACQUIRE_CB (void)0
1175# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1176#endif
1177
1178#define EVBREAK_RECURSE 0x80
1179
556/*****************************************************************************/ 1180/*****************************************************************************/
557 1181
1182#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1183ev_tstamp
559ev_time (void) 1184ev_time (void)
560{ 1185{
561#if EV_USE_REALTIME 1186#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1187 if (expect_true (have_realtime))
… …
569 1194
570 struct timeval tv; 1195 struct timeval tv;
571 gettimeofday (&tv, 0); 1196 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1197 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1198}
1199#endif
574 1200
575inline_size ev_tstamp 1201inline_size ev_tstamp
576get_clock (void) 1202get_clock (void)
577{ 1203{
578#if EV_USE_MONOTONIC 1204#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 1227 if (delay > 0.)
602 { 1228 {
603#if EV_USE_NANOSLEEP 1229#if EV_USE_NANOSLEEP
604 struct timespec ts; 1230 struct timespec ts;
605 1231
606 ts.tv_sec = (time_t)delay; 1232 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1233 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1234#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 1235 Sleep ((unsigned long)(delay * 1e3));
612#else 1236#else
613 struct timeval tv; 1237 struct timeval tv;
614 1238
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1240 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1241 /* by older ones */
1242 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1243 select (0, 0, 0, 0, &tv);
622#endif 1244#endif
623 } 1245 }
624} 1246}
625 1247
626/*****************************************************************************/ 1248/*****************************************************************************/
627 1249
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1250#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1251
1252/* find a suitable new size for the given array, */
1253/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1254inline_size int
631array_nextsize (int elem, int cur, int cnt) 1255array_nextsize (int elem, int cur, int cnt)
632{ 1256{
633 int ncur = cur + 1; 1257 int ncur = cur + 1;
634 1258
… …
646 } 1270 }
647 1271
648 return ncur; 1272 return ncur;
649} 1273}
650 1274
651static noinline void * 1275static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1276array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1277{
654 *cur = array_nextsize (elem, *cur, cnt); 1278 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1279 return ev_realloc (base, elem * *cur);
656} 1280}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1283 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1284
661#define array_needsize(type,base,cur,cnt,init) \ 1285#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1286 if (expect_false ((cnt) > (cur))) \
663 { \ 1287 { \
664 int ocur_ = (cur); \ 1288 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1289 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1290 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1291 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1292 }
669 1293
… …
680#define array_free(stem, idx) \ 1304#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1305 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1306
683/*****************************************************************************/ 1307/*****************************************************************************/
684 1308
1309/* dummy callback for pending events */
1310static void noinline
1311pendingcb (EV_P_ ev_prepare *w, int revents)
1312{
1313}
1314
685void noinline 1315void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1316ev_feed_event (EV_P_ void *w, int revents)
687{ 1317{
688 W w_ = (W)w; 1318 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1319 int pri = ABSPRI (w_);
… …
724} 1354}
725 1355
726/*****************************************************************************/ 1356/*****************************************************************************/
727 1357
728inline_speed void 1358inline_speed void
729fd_event (EV_P_ int fd, int revents) 1359fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1360{
731 ANFD *anfd = anfds + fd; 1361 ANFD *anfd = anfds + fd;
732 ev_io *w; 1362 ev_io *w;
733 1363
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1364 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1368 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1369 ev_feed_event (EV_A_ (W)w, ev);
740 } 1370 }
741} 1371}
742 1372
1373/* do not submit kernel events for fds that have reify set */
1374/* because that means they changed while we were polling for new events */
1375inline_speed void
1376fd_event (EV_P_ int fd, int revents)
1377{
1378 ANFD *anfd = anfds + fd;
1379
1380 if (expect_true (!anfd->reify))
1381 fd_event_nocheck (EV_A_ fd, revents);
1382}
1383
743void 1384void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1385ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1386{
746 if (fd >= 0 && fd < anfdmax) 1387 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1388 fd_event_nocheck (EV_A_ fd, revents);
748} 1389}
749 1390
1391/* make sure the external fd watch events are in-sync */
1392/* with the kernel/libev internal state */
750inline_size void 1393inline_size void
751fd_reify (EV_P) 1394fd_reify (EV_P)
752{ 1395{
753 int i; 1396 int i;
1397
1398#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1399 for (i = 0; i < fdchangecnt; ++i)
1400 {
1401 int fd = fdchanges [i];
1402 ANFD *anfd = anfds + fd;
1403
1404 if (anfd->reify & EV__IOFDSET && anfd->head)
1405 {
1406 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1407
1408 if (handle != anfd->handle)
1409 {
1410 unsigned long arg;
1411
1412 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1413
1414 /* handle changed, but fd didn't - we need to do it in two steps */
1415 backend_modify (EV_A_ fd, anfd->events, 0);
1416 anfd->events = 0;
1417 anfd->handle = handle;
1418 }
1419 }
1420 }
1421#endif
754 1422
755 for (i = 0; i < fdchangecnt; ++i) 1423 for (i = 0; i < fdchangecnt; ++i)
756 { 1424 {
757 int fd = fdchanges [i]; 1425 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1426 ANFD *anfd = anfds + fd;
759 ev_io *w; 1427 ev_io *w;
760 1428
761 unsigned char events = 0; 1429 unsigned char o_events = anfd->events;
1430 unsigned char o_reify = anfd->reify;
762 1431
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1432 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1433
766#if EV_SELECT_IS_WINSOCKET 1434 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1435 {
769 unsigned long arg; 1436 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1437
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1438 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1439 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1440
774 #endif 1441 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1442 o_reify = EV__IOFDSET; /* actually |= */
776 } 1443 }
777#endif
778 1444
779 { 1445 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1446 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1447 }
790 1448
791 fdchangecnt = 0; 1449 fdchangecnt = 0;
792} 1450}
793 1451
1452/* something about the given fd changed */
794inline_size void 1453inline_size void
795fd_change (EV_P_ int fd, int flags) 1454fd_change (EV_P_ int fd, int flags)
796{ 1455{
797 unsigned char reify = anfds [fd].reify; 1456 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1457 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1462 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1463 fdchanges [fdchangecnt - 1] = fd;
805 } 1464 }
806} 1465}
807 1466
1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1468inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1469fd_kill (EV_P_ int fd)
810{ 1470{
811 ev_io *w; 1471 ev_io *w;
812 1472
813 while ((w = (ev_io *)anfds [fd].head)) 1473 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1475 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1477 }
818} 1478}
819 1479
1480/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1481inline_size int ecb_cold
821fd_valid (int fd) 1482fd_valid (int fd)
822{ 1483{
823#ifdef _WIN32 1484#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1486#else
826 return fcntl (fd, F_GETFD) != -1; 1487 return fcntl (fd, F_GETFD) != -1;
827#endif 1488#endif
828} 1489}
829 1490
830/* called on EBADF to verify fds */ 1491/* called on EBADF to verify fds */
831static void noinline 1492static void noinline ecb_cold
832fd_ebadf (EV_P) 1493fd_ebadf (EV_P)
833{ 1494{
834 int fd; 1495 int fd;
835 1496
836 for (fd = 0; fd < anfdmax; ++fd) 1497 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1499 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1500 fd_kill (EV_A_ fd);
840} 1501}
841 1502
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1503/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1504static void noinline ecb_cold
844fd_enomem (EV_P) 1505fd_enomem (EV_P)
845{ 1506{
846 int fd; 1507 int fd;
847 1508
848 for (fd = anfdmax; fd--; ) 1509 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1510 if (anfds [fd].events)
850 { 1511 {
851 fd_kill (EV_A_ fd); 1512 fd_kill (EV_A_ fd);
852 return; 1513 break;
853 } 1514 }
854} 1515}
855 1516
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1517/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1518static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1523 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1524 if (anfds [fd].events)
864 { 1525 {
865 anfds [fd].events = 0; 1526 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1527 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1528 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1529 }
869} 1530}
870 1531
1532/* used to prepare libev internal fd's */
1533/* this is not fork-safe */
1534inline_speed void
1535fd_intern (int fd)
1536{
1537#ifdef _WIN32
1538 unsigned long arg = 1;
1539 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1540#else
1541 fcntl (fd, F_SETFD, FD_CLOEXEC);
1542 fcntl (fd, F_SETFL, O_NONBLOCK);
1543#endif
1544}
1545
871/*****************************************************************************/ 1546/*****************************************************************************/
872 1547
873/* 1548/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1549 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1550 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1551 * the branching factor of the d-tree.
877 */ 1552 */
878 1553
879/* 1554/*
… …
947 1622
948 for (;;) 1623 for (;;)
949 { 1624 {
950 int c = k << 1; 1625 int c = k << 1;
951 1626
952 if (c > N + HEAP0 - 1) 1627 if (c >= N + HEAP0)
953 break; 1628 break;
954 1629
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1630 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1631 ? 1 : 0;
957 1632
… …
989 1664
990 heap [k] = he; 1665 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1666 ev_active (ANHE_w (he)) = k;
992} 1667}
993 1668
1669/* move an element suitably so it is in a correct place */
994inline_size void 1670inline_size void
995adjustheap (ANHE *heap, int N, int k) 1671adjustheap (ANHE *heap, int N, int k)
996{ 1672{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1673 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1674 upheap (heap, k);
999 else 1675 else
1000 downheap (heap, N, k); 1676 downheap (heap, N, k);
1001} 1677}
1002 1678
… …
1012 upheap (heap, i + HEAP0); 1688 upheap (heap, i + HEAP0);
1013} 1689}
1014 1690
1015/*****************************************************************************/ 1691/*****************************************************************************/
1016 1692
1693/* associate signal watchers to a signal signal */
1017typedef struct 1694typedef struct
1018{ 1695{
1696 EV_ATOMIC_T pending;
1697#if EV_MULTIPLICITY
1698 EV_P;
1699#endif
1019 WL head; 1700 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1701} ANSIG;
1022 1702
1023static ANSIG *signals; 1703static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1704
1028/*****************************************************************************/ 1705/*****************************************************************************/
1029 1706
1030inline_speed void 1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1708
1042static void noinline 1709static void noinline ecb_cold
1043evpipe_init (EV_P) 1710evpipe_init (EV_P)
1044{ 1711{
1045 if (!ev_is_active (&pipeev)) 1712 if (!ev_is_active (&pipe_w))
1046 { 1713 {
1047#if EV_USE_EVENTFD 1714# if EV_USE_EVENTFD
1715 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1716 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1717 evfd = eventfd (0, 0);
1718
1719 if (evfd >= 0)
1049 { 1720 {
1050 evpipe [0] = -1; 1721 evpipe [0] = -1;
1051 fd_intern (evfd); 1722 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1723 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1724 }
1054 else 1725 else
1055#endif 1726# endif
1056 { 1727 {
1057 while (pipe (evpipe)) 1728 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1729 ev_syserr ("(libev) error creating signal/async pipe");
1059 1730
1060 fd_intern (evpipe [0]); 1731 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1732 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1733 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1734 }
1064 1735
1065 ev_io_start (EV_A_ &pipeev); 1736 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1738 }
1068} 1739}
1069 1740
1070inline_size void 1741inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1743{
1073 if (!*flag) 1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1074 { 1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1075 int old_errno = errno; /* save errno because write might clobber it */ 1761 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1762
1079#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1764 if (evfd >= 0)
1081 { 1765 {
1082 uint64_t counter = 1; 1766 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1767 write (evfd, &counter, sizeof (uint64_t));
1084 } 1768 }
1085 else 1769 else
1086#endif 1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1777 write (evpipe [1], &(evpipe [1]), 1);
1778 }
1088 1779
1089 errno = old_errno; 1780 errno = old_errno;
1090 } 1781 }
1091} 1782}
1092 1783
1784/* called whenever the libev signal pipe */
1785/* got some events (signal, async) */
1093static void 1786static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1787pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1788{
1789 int i;
1790
1791 if (revents & EV_READ)
1792 {
1096#if EV_USE_EVENTFD 1793#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1794 if (evfd >= 0)
1098 { 1795 {
1099 uint64_t counter; 1796 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1797 read (evfd, &counter, sizeof (uint64_t));
1101 } 1798 }
1102 else 1799 else
1103#endif 1800#endif
1104 { 1801 {
1105 char dummy; 1802 char dummy;
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1804 read (evpipe [0], &dummy, 1);
1805 }
1806 }
1807
1808 pipe_write_skipped = 0;
1809
1810#if EV_SIGNAL_ENABLE
1811 if (sig_pending)
1107 } 1812 {
1813 sig_pending = 0;
1108 1814
1109 if (gotsig && ev_is_default_loop (EV_A)) 1815 for (i = EV_NSIG - 1; i--; )
1110 { 1816 if (expect_false (signals [i].pending))
1111 int signum;
1112 gotsig = 0;
1113
1114 for (signum = signalmax; signum--; )
1115 if (signals [signum].gotsig)
1116 ev_feed_signal_event (EV_A_ signum + 1); 1817 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1818 }
1819#endif
1118 1820
1119#if EV_ASYNC_ENABLE 1821#if EV_ASYNC_ENABLE
1120 if (gotasync) 1822 if (async_pending)
1121 { 1823 {
1122 int i; 1824 async_pending = 0;
1123 gotasync = 0;
1124 1825
1125 for (i = asynccnt; i--; ) 1826 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1827 if (asyncs [i]->sent)
1127 { 1828 {
1128 asyncs [i]->sent = 0; 1829 asyncs [i]->sent = 0;
… …
1132#endif 1833#endif
1133} 1834}
1134 1835
1135/*****************************************************************************/ 1836/*****************************************************************************/
1136 1837
1838void
1839ev_feed_signal (int signum)
1840{
1841#if EV_MULTIPLICITY
1842 EV_P = signals [signum - 1].loop;
1843
1844 if (!EV_A)
1845 return;
1846#endif
1847
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending);
1853}
1854
1137static void 1855static void
1138ev_sighandler (int signum) 1856ev_sighandler (int signum)
1139{ 1857{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1858#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1859 signal (signum, ev_sighandler);
1146#endif 1860#endif
1147 1861
1148 signals [signum - 1].gotsig = 1; 1862 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1863}
1151 1864
1152void noinline 1865void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1866ev_feed_signal_event (EV_P_ int signum)
1154{ 1867{
1155 WL w; 1868 WL w;
1156 1869
1870 if (expect_false (signum <= 0 || signum > EV_NSIG))
1871 return;
1872
1873 --signum;
1874
1157#if EV_MULTIPLICITY 1875#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1876 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1877 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1878
1161 --signum; 1879 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1880 return;
1881#endif
1165 1882
1166 signals [signum].gotsig = 0; 1883 signals [signum].pending = 0;
1167 1884
1168 for (w = signals [signum].head; w; w = w->next) 1885 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1886 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1887}
1171 1888
1889#if EV_USE_SIGNALFD
1890static void
1891sigfdcb (EV_P_ ev_io *iow, int revents)
1892{
1893 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1894
1895 for (;;)
1896 {
1897 ssize_t res = read (sigfd, si, sizeof (si));
1898
1899 /* not ISO-C, as res might be -1, but works with SuS */
1900 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1901 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1902
1903 if (res < (ssize_t)sizeof (si))
1904 break;
1905 }
1906}
1907#endif
1908
1909#endif
1910
1172/*****************************************************************************/ 1911/*****************************************************************************/
1173 1912
1913#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1914static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1915
1178static ev_signal childev; 1916static ev_signal childev;
1179 1917
1180#ifndef WIFCONTINUED 1918#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1919# define WIFCONTINUED(status) 0
1182#endif 1920#endif
1183 1921
1922/* handle a single child status event */
1184inline_speed void 1923inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1924child_reap (EV_P_ int chain, int pid, int status)
1186{ 1925{
1187 ev_child *w; 1926 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1927 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1928
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1929 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1930 {
1192 if ((w->pid == pid || !w->pid) 1931 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1932 && (!traced || (w->flags & 1)))
1194 { 1933 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1934 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1941
1203#ifndef WCONTINUED 1942#ifndef WCONTINUED
1204# define WCONTINUED 0 1943# define WCONTINUED 0
1205#endif 1944#endif
1206 1945
1946/* called on sigchld etc., calls waitpid */
1207static void 1947static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1948childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1949{
1210 int pid, status; 1950 int pid, status;
1211 1951
… …
1219 /* make sure we are called again until all children have been reaped */ 1959 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1960 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1961 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1962
1223 child_reap (EV_A_ pid, pid, status); 1963 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1964 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1965 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1966}
1227 1967
1228#endif 1968#endif
1229 1969
1230/*****************************************************************************/ 1970/*****************************************************************************/
1231 1971
1972#if EV_USE_IOCP
1973# include "ev_iocp.c"
1974#endif
1232#if EV_USE_PORT 1975#if EV_USE_PORT
1233# include "ev_port.c" 1976# include "ev_port.c"
1234#endif 1977#endif
1235#if EV_USE_KQUEUE 1978#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1979# include "ev_kqueue.c"
… …
1243#endif 1986#endif
1244#if EV_USE_SELECT 1987#if EV_USE_SELECT
1245# include "ev_select.c" 1988# include "ev_select.c"
1246#endif 1989#endif
1247 1990
1248int 1991int ecb_cold
1249ev_version_major (void) 1992ev_version_major (void)
1250{ 1993{
1251 return EV_VERSION_MAJOR; 1994 return EV_VERSION_MAJOR;
1252} 1995}
1253 1996
1254int 1997int ecb_cold
1255ev_version_minor (void) 1998ev_version_minor (void)
1256{ 1999{
1257 return EV_VERSION_MINOR; 2000 return EV_VERSION_MINOR;
1258} 2001}
1259 2002
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2003/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2004int inline_size ecb_cold
1262enable_secure (void) 2005enable_secure (void)
1263{ 2006{
1264#ifdef _WIN32 2007#ifdef _WIN32
1265 return 0; 2008 return 0;
1266#else 2009#else
1267 return getuid () != geteuid () 2010 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2011 || getgid () != getegid ();
1269#endif 2012#endif
1270} 2013}
1271 2014
1272unsigned int 2015unsigned int ecb_cold
1273ev_supported_backends (void) 2016ev_supported_backends (void)
1274{ 2017{
1275 unsigned int flags = 0; 2018 unsigned int flags = 0;
1276 2019
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2025
1283 return flags; 2026 return flags;
1284} 2027}
1285 2028
1286unsigned int 2029unsigned int ecb_cold
1287ev_recommended_backends (void) 2030ev_recommended_backends (void)
1288{ 2031{
1289 unsigned int flags = ev_supported_backends (); 2032 unsigned int flags = ev_supported_backends ();
1290 2033
1291#ifndef __NetBSD__ 2034#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 2039#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2040 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2041 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2042 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2043#endif
2044#ifdef __FreeBSD__
2045 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2046#endif
1301 2047
1302 return flags; 2048 return flags;
1303} 2049}
1304 2050
1305unsigned int 2051unsigned int ecb_cold
1306ev_embeddable_backends (void) 2052ev_embeddable_backends (void)
1307{ 2053{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2055
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2058 flags &= ~EVBACKEND_EPOLL;
1313 2059
1314 return flags; 2060 return flags;
1315} 2061}
1316 2062
1317unsigned int 2063unsigned int
1318ev_backend (EV_P) 2064ev_backend (EV_P)
1319{ 2065{
1320 return backend; 2066 return backend;
1321} 2067}
1322 2068
2069#if EV_FEATURE_API
1323unsigned int 2070unsigned int
1324ev_loop_count (EV_P) 2071ev_iteration (EV_P)
1325{ 2072{
1326 return loop_count; 2073 return loop_count;
2074}
2075
2076unsigned int
2077ev_depth (EV_P)
2078{
2079 return loop_depth;
1327} 2080}
1328 2081
1329void 2082void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2083ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 2084{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2089ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 2090{
1338 timeout_blocktime = interval; 2091 timeout_blocktime = interval;
1339} 2092}
1340 2093
2094void
2095ev_set_userdata (EV_P_ void *data)
2096{
2097 userdata = data;
2098}
2099
2100void *
2101ev_userdata (EV_P)
2102{
2103 return userdata;
2104}
2105
2106void
2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2108{
2109 invoke_cb = invoke_pending_cb;
2110}
2111
2112void
2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2114{
2115 release_cb = release;
2116 acquire_cb = acquire;
2117}
2118#endif
2119
2120/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2121static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2122loop_init (EV_P_ unsigned int flags)
1343{ 2123{
1344 if (!backend) 2124 if (!backend)
1345 { 2125 {
2126 origflags = flags;
2127
1346#if EV_USE_REALTIME 2128#if EV_USE_REALTIME
1347 if (!have_realtime) 2129 if (!have_realtime)
1348 { 2130 {
1349 struct timespec ts; 2131 struct timespec ts;
1350 2132
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2143 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2144 have_monotonic = 1;
1363 } 2145 }
1364#endif 2146#endif
1365 2147
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 2148 /* pid check not overridable via env */
1381#ifndef _WIN32 2149#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2150 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2151 curpid = getpid ();
1384#endif 2152#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2154 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2155 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2156 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2157 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2158
1391 if (!(flags & 0x0000ffffU)) 2159 ev_rt_now = ev_time ();
2160 mn_now = get_clock ();
2161 now_floor = mn_now;
2162 rtmn_diff = ev_rt_now - mn_now;
2163#if EV_FEATURE_API
2164 invoke_cb = ev_invoke_pending;
2165#endif
2166
2167 io_blocktime = 0.;
2168 timeout_blocktime = 0.;
2169 backend = 0;
2170 backend_fd = -1;
2171 sig_pending = 0;
2172#if EV_ASYNC_ENABLE
2173 async_pending = 0;
2174#endif
2175 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0;
2177#if EV_USE_INOTIFY
2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2179#endif
2180#if EV_USE_SIGNALFD
2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2182#endif
2183
2184 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2185 flags |= ev_recommended_backends ();
1393 2186
2187#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif
1394#if EV_USE_PORT 2190#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2192#endif
1397#if EV_USE_KQUEUE 2193#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2201#endif
1406#if EV_USE_SELECT 2202#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2203 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2204#endif
1409 2205
2206 ev_prepare_init (&pending_w, pendingcb);
2207
2208#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2209 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2210 ev_set_priority (&pipe_w, EV_MAXPRI);
2211#endif
1412 } 2212 }
1413} 2213}
1414 2214
1415static void noinline 2215/* free up a loop structure */
2216void ecb_cold
1416loop_destroy (EV_P) 2217ev_loop_destroy (EV_P)
1417{ 2218{
1418 int i; 2219 int i;
1419 2220
2221#if EV_MULTIPLICITY
2222 /* mimic free (0) */
2223 if (!EV_A)
2224 return;
2225#endif
2226
2227#if EV_CLEANUP_ENABLE
2228 /* queue cleanup watchers (and execute them) */
2229 if (expect_false (cleanupcnt))
2230 {
2231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2232 EV_INVOKE_PENDING;
2233 }
2234#endif
2235
2236#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev))
2238 {
2239 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev);
2241 }
2242#endif
2243
1420 if (ev_is_active (&pipeev)) 2244 if (ev_is_active (&pipe_w))
1421 { 2245 {
1422 ev_ref (EV_A); /* signal watcher */ 2246 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2247 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2248
1425#if EV_USE_EVENTFD 2249#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2250 if (evfd >= 0)
1427 close (evfd); 2251 close (evfd);
1428#endif 2252#endif
1429 2253
1430 if (evpipe [0] >= 0) 2254 if (evpipe [0] >= 0)
1431 { 2255 {
1432 close (evpipe [0]); 2256 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2257 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2258 }
1435 } 2259 }
2260
2261#if EV_USE_SIGNALFD
2262 if (ev_is_active (&sigfd_w))
2263 close (sigfd);
2264#endif
1436 2265
1437#if EV_USE_INOTIFY 2266#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2267 if (fs_fd >= 0)
1439 close (fs_fd); 2268 close (fs_fd);
1440#endif 2269#endif
1441 2270
1442 if (backend_fd >= 0) 2271 if (backend_fd >= 0)
1443 close (backend_fd); 2272 close (backend_fd);
1444 2273
2274#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif
1445#if EV_USE_PORT 2277#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2279#endif
1448#if EV_USE_KQUEUE 2280#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2296#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2297 array_free (idle, [i]);
1466#endif 2298#endif
1467 } 2299 }
1468 2300
1469 ev_free (anfds); anfdmax = 0; 2301 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2302
1471 /* have to use the microsoft-never-gets-it-right macro */ 2303 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2304 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2305 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2306 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2308 array_free (periodic, EMPTY);
1477#endif 2309#endif
1478#if EV_FORK_ENABLE 2310#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2311 array_free (fork, EMPTY);
1480#endif 2312#endif
2313#if EV_CLEANUP_ENABLE
2314 array_free (cleanup, EMPTY);
2315#endif
1481 array_free (prepare, EMPTY); 2316 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2317 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2318#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2319 array_free (async, EMPTY);
1485#endif 2320#endif
1486 2321
1487 backend = 0; 2322 backend = 0;
2323
2324#if EV_MULTIPLICITY
2325 if (ev_is_default_loop (EV_A))
2326#endif
2327 ev_default_loop_ptr = 0;
2328#if EV_MULTIPLICITY
2329 else
2330 ev_free (EV_A);
2331#endif
1488} 2332}
1489 2333
1490#if EV_USE_INOTIFY 2334#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2335inline_size void infy_fork (EV_P);
1492#endif 2336#endif
… …
1505#endif 2349#endif
1506#if EV_USE_INOTIFY 2350#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2351 infy_fork (EV_A);
1508#endif 2352#endif
1509 2353
1510 if (ev_is_active (&pipeev)) 2354 if (ev_is_active (&pipe_w))
1511 { 2355 {
1512 /* this "locks" the handlers against writing to the pipe */ 2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 2357
1519 ev_ref (EV_A); 2358 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2359 ev_io_stop (EV_A_ &pipe_w);
1521 2360
1522#if EV_USE_EVENTFD 2361#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2362 if (evfd >= 0)
1524 close (evfd); 2363 close (evfd);
1525#endif 2364#endif
1526 2365
1527 if (evpipe [0] >= 0) 2366 if (evpipe [0] >= 0)
1528 { 2367 {
1529 close (evpipe [0]); 2368 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2369 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2370 }
1532 2371
2372#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2373 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2374 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2375 pipecb (EV_A_ &pipe_w, EV_READ);
2376#endif
1536 } 2377 }
1537 2378
1538 postfork = 0; 2379 postfork = 0;
1539} 2380}
1540 2381
1541#if EV_MULTIPLICITY 2382#if EV_MULTIPLICITY
1542 2383
1543struct ev_loop * 2384struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2385ev_loop_new (unsigned int flags)
1545{ 2386{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2388
1548 memset (loop, 0, sizeof (struct ev_loop)); 2389 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2390 loop_init (EV_A_ flags);
1551 2391
1552 if (ev_backend (EV_A)) 2392 if (ev_backend (EV_A))
1553 return loop; 2393 return EV_A;
1554 2394
2395 ev_free (EV_A);
1555 return 0; 2396 return 0;
1556} 2397}
1557 2398
1558void 2399#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 2400
1571#if EV_VERIFY 2401#if EV_VERIFY
1572static void noinline 2402static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2403verify_watcher (EV_P_ W w)
1574{ 2404{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2406
1577 if (w->pending) 2407 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2409}
1580 2410
1581static void noinline 2411static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2412verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2413{
1584 int i; 2414 int i;
1585 2415
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2416 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2421
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2423 }
1594} 2424}
1595 2425
1596static void noinline 2426static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2427array_verify (EV_P_ W *ws, int cnt)
1598{ 2428{
1599 while (cnt--) 2429 while (cnt--)
1600 { 2430 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2432 verify_watcher (EV_A_ ws [cnt]);
1603 } 2433 }
1604} 2434}
1605#endif 2435#endif
1606 2436
1607void 2437#if EV_FEATURE_API
2438void ecb_cold
1608ev_loop_verify (EV_P) 2439ev_verify (EV_P)
1609{ 2440{
1610#if EV_VERIFY 2441#if EV_VERIFY
1611 int i; 2442 int i;
1612 WL w; 2443 WL w;
1613 2444
… …
1647#if EV_FORK_ENABLE 2478#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2479 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2480 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2481#endif
1651 2482
2483#if EV_CLEANUP_ENABLE
2484 assert (cleanupmax >= cleanupcnt);
2485 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2486#endif
2487
1652#if EV_ASYNC_ENABLE 2488#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2489 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2490 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2491#endif
1656 2492
2493#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2494 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2495 array_verify (EV_A_ (W *)prepares, preparecnt);
2496#endif
1659 2497
2498#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2499 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2500 array_verify (EV_A_ (W *)checks, checkcnt);
2501#endif
1662 2502
1663# if 0 2503# if 0
2504#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2505 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2506 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2507#endif
1666# endif 2508# endif
1667#endif 2509#endif
1668} 2510}
1669 2511#endif
1670#endif /* multiplicity */
1671 2512
1672#if EV_MULTIPLICITY 2513#if EV_MULTIPLICITY
1673struct ev_loop * 2514struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2515#else
1676int 2516int
2517#endif
1677ev_default_loop (unsigned int flags) 2518ev_default_loop (unsigned int flags)
1678#endif
1679{ 2519{
1680 if (!ev_default_loop_ptr) 2520 if (!ev_default_loop_ptr)
1681 { 2521 {
1682#if EV_MULTIPLICITY 2522#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2523 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2524#else
1685 ev_default_loop_ptr = 1; 2525 ev_default_loop_ptr = 1;
1686#endif 2526#endif
1687 2527
1688 loop_init (EV_A_ flags); 2528 loop_init (EV_A_ flags);
1689 2529
1690 if (ev_backend (EV_A)) 2530 if (ev_backend (EV_A))
1691 { 2531 {
1692#ifndef _WIN32 2532#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2533 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2534 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2535 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2536 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2537#endif
… …
1702 2542
1703 return ev_default_loop_ptr; 2543 return ev_default_loop_ptr;
1704} 2544}
1705 2545
1706void 2546void
1707ev_default_destroy (void) 2547ev_loop_fork (EV_P)
1708{ 2548{
1709#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2549 postfork = 1; /* must be in line with ev_default_fork */
1731} 2550}
1732 2551
1733/*****************************************************************************/ 2552/*****************************************************************************/
1734 2553
1735void 2554void
1736ev_invoke (EV_P_ void *w, int revents) 2555ev_invoke (EV_P_ void *w, int revents)
1737{ 2556{
1738 EV_CB_INVOKE ((W)w, revents); 2557 EV_CB_INVOKE ((W)w, revents);
1739} 2558}
1740 2559
1741inline_speed void 2560unsigned int
1742call_pending (EV_P) 2561ev_pending_count (EV_P)
2562{
2563 int pri;
2564 unsigned int count = 0;
2565
2566 for (pri = NUMPRI; pri--; )
2567 count += pendingcnt [pri];
2568
2569 return count;
2570}
2571
2572void noinline
2573ev_invoke_pending (EV_P)
1743{ 2574{
1744 int pri; 2575 int pri;
1745 2576
1746 for (pri = NUMPRI; pri--; ) 2577 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2578 while (pendingcnt [pri])
1748 { 2579 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2581
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1754
1755 p->w->pending = 0; 2582 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2583 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2584 EV_FREQUENT_CHECK;
1758 }
1759 } 2585 }
1760} 2586}
1761 2587
1762#if EV_IDLE_ENABLE 2588#if EV_IDLE_ENABLE
2589/* make idle watchers pending. this handles the "call-idle */
2590/* only when higher priorities are idle" logic */
1763inline_size void 2591inline_size void
1764idle_reify (EV_P) 2592idle_reify (EV_P)
1765{ 2593{
1766 if (expect_false (idleall)) 2594 if (expect_false (idleall))
1767 { 2595 {
… …
1780 } 2608 }
1781 } 2609 }
1782} 2610}
1783#endif 2611#endif
1784 2612
2613/* make timers pending */
1785inline_size void 2614inline_size void
1786timers_reify (EV_P) 2615timers_reify (EV_P)
1787{ 2616{
1788 EV_FREQUENT_CHECK; 2617 EV_FREQUENT_CHECK;
1789 2618
… …
1813 EV_FREQUENT_CHECK; 2642 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2643 feed_reverse (EV_A_ (W)w);
1815 } 2644 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2645 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2646
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2647 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2648 }
1820} 2649}
1821 2650
1822#if EV_PERIODIC_ENABLE 2651#if EV_PERIODIC_ENABLE
2652
2653static void noinline
2654periodic_recalc (EV_P_ ev_periodic *w)
2655{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658
2659 /* the above almost always errs on the low side */
2660 while (at <= ev_rt_now)
2661 {
2662 ev_tstamp nat = at + w->interval;
2663
2664 /* when resolution fails us, we use ev_rt_now */
2665 if (expect_false (nat == at))
2666 {
2667 at = ev_rt_now;
2668 break;
2669 }
2670
2671 at = nat;
2672 }
2673
2674 ev_at (w) = at;
2675}
2676
2677/* make periodics pending */
1823inline_size void 2678inline_size void
1824periodics_reify (EV_P) 2679periodics_reify (EV_P)
1825{ 2680{
1826 EV_FREQUENT_CHECK; 2681 EV_FREQUENT_CHECK;
1827 2682
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2700 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2701 downheap (periodics, periodiccnt, HEAP0);
1847 } 2702 }
1848 else if (w->interval) 2703 else if (w->interval)
1849 { 2704 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2705 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 2706 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2707 downheap (periodics, periodiccnt, HEAP0);
1866 } 2708 }
1867 else 2709 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2710 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2716
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2717 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2718 }
1877} 2719}
1878 2720
2721/* simply recalculate all periodics */
2722/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2723static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2724periodics_reschedule (EV_P)
1881{ 2725{
1882 int i; 2726 int i;
1883 2727
1884 /* adjust periodics after time jump */ 2728 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2731 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2732
1889 if (w->reschedule_cb) 2733 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2734 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2735 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2736 periodic_recalc (EV_A_ w);
1893 2737
1894 ANHE_at_cache (periodics [i]); 2738 ANHE_at_cache (periodics [i]);
1895 } 2739 }
1896 2740
1897 reheap (periodics, periodiccnt); 2741 reheap (periodics, periodiccnt);
1898} 2742}
1899#endif 2743#endif
1900 2744
2745/* adjust all timers by a given offset */
1901static void noinline 2746static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2747timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2748{
1904 int i; 2749 int i;
1905 2750
1906 for (i = 0; i < timercnt; ++i) 2751 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2754 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2755 ANHE_at_cache (*he);
1911 } 2756 }
1912} 2757}
1913 2758
2759/* fetch new monotonic and realtime times from the kernel */
2760/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2761inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2762time_update (EV_P_ ev_tstamp max_block)
1916{ 2763{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2764#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2765 if (expect_true (have_monotonic))
1921 { 2766 {
2767 int i;
1922 ev_tstamp odiff = rtmn_diff; 2768 ev_tstamp odiff = rtmn_diff;
1923 2769
1924 mn_now = get_clock (); 2770 mn_now = get_clock ();
1925 2771
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2772 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1942 * doesn't hurt either as we only do this on time-jumps or 2788 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2789 * in the unlikely event of having been preempted here.
1944 */ 2790 */
1945 for (i = 4; --i; ) 2791 for (i = 4; --i; )
1946 { 2792 {
2793 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2794 rtmn_diff = ev_rt_now - mn_now;
1948 2795
2796 diff = odiff - rtmn_diff;
2797
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2798 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2799 return; /* all is well */
1951 2800
1952 ev_rt_now = ev_time (); 2801 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2802 mn_now = get_clock ();
1954 now_floor = mn_now; 2803 now_floor = mn_now;
… …
1976 2825
1977 mn_now = ev_rt_now; 2826 mn_now = ev_rt_now;
1978 } 2827 }
1979} 2828}
1980 2829
1981static int loop_done;
1982
1983void 2830void
1984ev_loop (EV_P_ int flags) 2831ev_run (EV_P_ int flags)
1985{ 2832{
2833#if EV_FEATURE_API
2834 ++loop_depth;
2835#endif
2836
2837 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2838
1986 loop_done = EVUNLOOP_CANCEL; 2839 loop_done = EVBREAK_CANCEL;
1987 2840
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2841 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2842
1990 do 2843 do
1991 { 2844 {
1992#if EV_VERIFY >= 2 2845#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2846 ev_verify (EV_A);
1994#endif 2847#endif
1995 2848
1996#ifndef _WIN32 2849#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2850 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2851 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2859 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2860 if (expect_false (postfork))
2008 if (forkcnt) 2861 if (forkcnt)
2009 { 2862 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2863 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2864 EV_INVOKE_PENDING;
2012 } 2865 }
2013#endif 2866#endif
2014 2867
2868#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2869 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2870 if (expect_false (preparecnt))
2017 { 2871 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2872 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2873 EV_INVOKE_PENDING;
2020 } 2874 }
2875#endif
2876
2877 if (expect_false (loop_done))
2878 break;
2021 2879
2022 /* we might have forked, so reify kernel state if necessary */ 2880 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2881 if (expect_false (postfork))
2024 loop_fork (EV_A); 2882 loop_fork (EV_A);
2025 2883
… …
2029 /* calculate blocking time */ 2887 /* calculate blocking time */
2030 { 2888 {
2031 ev_tstamp waittime = 0.; 2889 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2890 ev_tstamp sleeptime = 0.;
2033 2891
2892 /* remember old timestamp for io_blocktime calculation */
2893 ev_tstamp prev_mn_now = mn_now;
2894
2895 /* update time to cancel out callback processing overhead */
2896 time_update (EV_A_ 1e100);
2897
2898 /* from now on, we want a pipe-wake-up */
2899 pipe_write_wanted = 1;
2900
2901 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2902
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2903 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2904 {
2036 /* update time to cancel out callback processing overhead */
2037 time_update (EV_A_ 1e100);
2038
2039 waittime = MAX_BLOCKTIME; 2905 waittime = MAX_BLOCKTIME;
2040 2906
2041 if (timercnt) 2907 if (timercnt)
2042 { 2908 {
2043 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2909 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2044 if (waittime > to) waittime = to; 2910 if (waittime > to) waittime = to;
2045 } 2911 }
2046 2912
2047#if EV_PERIODIC_ENABLE 2913#if EV_PERIODIC_ENABLE
2048 if (periodiccnt) 2914 if (periodiccnt)
2049 { 2915 {
2050 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2916 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2051 if (waittime > to) waittime = to; 2917 if (waittime > to) waittime = to;
2052 } 2918 }
2053#endif 2919#endif
2054 2920
2921 /* don't let timeouts decrease the waittime below timeout_blocktime */
2055 if (expect_false (waittime < timeout_blocktime)) 2922 if (expect_false (waittime < timeout_blocktime))
2056 waittime = timeout_blocktime; 2923 waittime = timeout_blocktime;
2057 2924
2058 sleeptime = waittime - backend_fudge; 2925 /* at this point, we NEED to wait, so we have to ensure */
2926 /* to pass a minimum nonzero value to the backend */
2927 if (expect_false (waittime < backend_mintime))
2928 waittime = backend_mintime;
2059 2929
2930 /* extra check because io_blocktime is commonly 0 */
2060 if (expect_true (sleeptime > io_blocktime)) 2931 if (expect_false (io_blocktime))
2061 sleeptime = io_blocktime;
2062
2063 if (sleeptime)
2064 { 2932 {
2933 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2934
2935 if (sleeptime > waittime - backend_mintime)
2936 sleeptime = waittime - backend_mintime;
2937
2938 if (expect_true (sleeptime > 0.))
2939 {
2065 ev_sleep (sleeptime); 2940 ev_sleep (sleeptime);
2066 waittime -= sleeptime; 2941 waittime -= sleeptime;
2942 }
2067 } 2943 }
2068 } 2944 }
2069 2945
2946#if EV_FEATURE_API
2070 ++loop_count; 2947 ++loop_count;
2948#endif
2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2071 backend_poll (EV_A_ waittime); 2950 backend_poll (EV_A_ waittime);
2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2954
2955 if (pipe_write_skipped)
2956 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 }
2960
2072 2961
2073 /* update ev_rt_now, do magic */ 2962 /* update ev_rt_now, do magic */
2074 time_update (EV_A_ waittime + sleeptime); 2963 time_update (EV_A_ waittime + sleeptime);
2075 } 2964 }
2076 2965
… …
2083#if EV_IDLE_ENABLE 2972#if EV_IDLE_ENABLE
2084 /* queue idle watchers unless other events are pending */ 2973 /* queue idle watchers unless other events are pending */
2085 idle_reify (EV_A); 2974 idle_reify (EV_A);
2086#endif 2975#endif
2087 2976
2977#if EV_CHECK_ENABLE
2088 /* queue check watchers, to be executed first */ 2978 /* queue check watchers, to be executed first */
2089 if (expect_false (checkcnt)) 2979 if (expect_false (checkcnt))
2090 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2980 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2981#endif
2091 2982
2092 call_pending (EV_A); 2983 EV_INVOKE_PENDING;
2093 } 2984 }
2094 while (expect_true ( 2985 while (expect_true (
2095 activecnt 2986 activecnt
2096 && !loop_done 2987 && !loop_done
2097 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2988 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2098 )); 2989 ));
2099 2990
2100 if (loop_done == EVUNLOOP_ONE) 2991 if (loop_done == EVBREAK_ONE)
2101 loop_done = EVUNLOOP_CANCEL; 2992 loop_done = EVBREAK_CANCEL;
2993
2994#if EV_FEATURE_API
2995 --loop_depth;
2996#endif
2102} 2997}
2103 2998
2104void 2999void
2105ev_unloop (EV_P_ int how) 3000ev_break (EV_P_ int how)
2106{ 3001{
2107 loop_done = how; 3002 loop_done = how;
2108} 3003}
2109 3004
2110void 3005void
… …
2137 ev_tstamp mn_prev = mn_now; 3032 ev_tstamp mn_prev = mn_now;
2138 3033
2139 ev_now_update (EV_A); 3034 ev_now_update (EV_A);
2140 timers_reschedule (EV_A_ mn_now - mn_prev); 3035 timers_reschedule (EV_A_ mn_now - mn_prev);
2141#if EV_PERIODIC_ENABLE 3036#if EV_PERIODIC_ENABLE
3037 /* TODO: really do this? */
2142 periodics_reschedule (EV_A); 3038 periodics_reschedule (EV_A);
2143#endif 3039#endif
2144} 3040}
2145 3041
2146/*****************************************************************************/ 3042/*****************************************************************************/
3043/* singly-linked list management, used when the expected list length is short */
2147 3044
2148inline_size void 3045inline_size void
2149wlist_add (WL *head, WL elem) 3046wlist_add (WL *head, WL elem)
2150{ 3047{
2151 elem->next = *head; 3048 elem->next = *head;
… …
2155inline_size void 3052inline_size void
2156wlist_del (WL *head, WL elem) 3053wlist_del (WL *head, WL elem)
2157{ 3054{
2158 while (*head) 3055 while (*head)
2159 { 3056 {
2160 if (*head == elem) 3057 if (expect_true (*head == elem))
2161 { 3058 {
2162 *head = elem->next; 3059 *head = elem->next;
2163 return; 3060 break;
2164 } 3061 }
2165 3062
2166 head = &(*head)->next; 3063 head = &(*head)->next;
2167 } 3064 }
2168} 3065}
2169 3066
3067/* internal, faster, version of ev_clear_pending */
2170inline_speed void 3068inline_speed void
2171clear_pending (EV_P_ W w) 3069clear_pending (EV_P_ W w)
2172{ 3070{
2173 if (w->pending) 3071 if (w->pending)
2174 { 3072 {
2175 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3073 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2176 w->pending = 0; 3074 w->pending = 0;
2177 } 3075 }
2178} 3076}
2179 3077
2180int 3078int
… …
2184 int pending = w_->pending; 3082 int pending = w_->pending;
2185 3083
2186 if (expect_true (pending)) 3084 if (expect_true (pending))
2187 { 3085 {
2188 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3087 p->w = (W)&pending_w;
2189 w_->pending = 0; 3088 w_->pending = 0;
2190 p->w = 0;
2191 return p->events; 3089 return p->events;
2192 } 3090 }
2193 else 3091 else
2194 return 0; 3092 return 0;
2195} 3093}
2196 3094
2197inline_size void 3095inline_size void
2198pri_adjust (EV_P_ W w) 3096pri_adjust (EV_P_ W w)
2199{ 3097{
2200 int pri = w->priority; 3098 int pri = ev_priority (w);
2201 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3099 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2202 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2203 w->priority = pri; 3101 ev_set_priority (w, pri);
2204} 3102}
2205 3103
2206inline_speed void 3104inline_speed void
2207ev_start (EV_P_ W w, int active) 3105ev_start (EV_P_ W w, int active)
2208{ 3106{
… …
2227 3125
2228 if (expect_false (ev_is_active (w))) 3126 if (expect_false (ev_is_active (w)))
2229 return; 3127 return;
2230 3128
2231 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3129 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2232 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3130 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2233 3131
2234 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2235 3133
2236 ev_start (EV_A_ (W)w, 1); 3134 ev_start (EV_A_ (W)w, 1);
2237 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2238 wlist_add (&anfds[fd].head, (WL)w); 3136 wlist_add (&anfds[fd].head, (WL)w);
2239 3137
2240 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3138 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2241 w->events &= ~EV__IOFDSET; 3139 w->events &= ~EV__IOFDSET;
2242 3140
2243 EV_FREQUENT_CHECK; 3141 EV_FREQUENT_CHECK;
2244} 3142}
2245 3143
… …
2255 EV_FREQUENT_CHECK; 3153 EV_FREQUENT_CHECK;
2256 3154
2257 wlist_del (&anfds[w->fd].head, (WL)w); 3155 wlist_del (&anfds[w->fd].head, (WL)w);
2258 ev_stop (EV_A_ (W)w); 3156 ev_stop (EV_A_ (W)w);
2259 3157
2260 fd_change (EV_A_ w->fd, 1); 3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2261 3159
2262 EV_FREQUENT_CHECK; 3160 EV_FREQUENT_CHECK;
2263} 3161}
2264 3162
2265void noinline 3163void noinline
… …
2307 timers [active] = timers [timercnt + HEAP0]; 3205 timers [active] = timers [timercnt + HEAP0];
2308 adjustheap (timers, timercnt, active); 3206 adjustheap (timers, timercnt, active);
2309 } 3207 }
2310 } 3208 }
2311 3209
2312 EV_FREQUENT_CHECK;
2313
2314 ev_at (w) -= mn_now; 3210 ev_at (w) -= mn_now;
2315 3211
2316 ev_stop (EV_A_ (W)w); 3212 ev_stop (EV_A_ (W)w);
3213
3214 EV_FREQUENT_CHECK;
2317} 3215}
2318 3216
2319void noinline 3217void noinline
2320ev_timer_again (EV_P_ ev_timer *w) 3218ev_timer_again (EV_P_ ev_timer *w)
2321{ 3219{
… …
2339 } 3237 }
2340 3238
2341 EV_FREQUENT_CHECK; 3239 EV_FREQUENT_CHECK;
2342} 3240}
2343 3241
3242ev_tstamp
3243ev_timer_remaining (EV_P_ ev_timer *w)
3244{
3245 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3246}
3247
2344#if EV_PERIODIC_ENABLE 3248#if EV_PERIODIC_ENABLE
2345void noinline 3249void noinline
2346ev_periodic_start (EV_P_ ev_periodic *w) 3250ev_periodic_start (EV_P_ ev_periodic *w)
2347{ 3251{
2348 if (expect_false (ev_is_active (w))) 3252 if (expect_false (ev_is_active (w)))
… …
2351 if (w->reschedule_cb) 3255 if (w->reschedule_cb)
2352 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3256 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2353 else if (w->interval) 3257 else if (w->interval)
2354 { 3258 {
2355 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3259 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2356 /* this formula differs from the one in periodic_reify because we do not always round up */ 3260 periodic_recalc (EV_A_ w);
2357 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2358 } 3261 }
2359 else 3262 else
2360 ev_at (w) = w->offset; 3263 ev_at (w) = w->offset;
2361 3264
2362 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
… …
2394 periodics [active] = periodics [periodiccnt + HEAP0]; 3297 periodics [active] = periodics [periodiccnt + HEAP0];
2395 adjustheap (periodics, periodiccnt, active); 3298 adjustheap (periodics, periodiccnt, active);
2396 } 3299 }
2397 } 3300 }
2398 3301
2399 EV_FREQUENT_CHECK;
2400
2401 ev_stop (EV_A_ (W)w); 3302 ev_stop (EV_A_ (W)w);
3303
3304 EV_FREQUENT_CHECK;
2402} 3305}
2403 3306
2404void noinline 3307void noinline
2405ev_periodic_again (EV_P_ ev_periodic *w) 3308ev_periodic_again (EV_P_ ev_periodic *w)
2406{ 3309{
… …
2412 3315
2413#ifndef SA_RESTART 3316#ifndef SA_RESTART
2414# define SA_RESTART 0 3317# define SA_RESTART 0
2415#endif 3318#endif
2416 3319
3320#if EV_SIGNAL_ENABLE
3321
2417void noinline 3322void noinline
2418ev_signal_start (EV_P_ ev_signal *w) 3323ev_signal_start (EV_P_ ev_signal *w)
2419{ 3324{
2420#if EV_MULTIPLICITY
2421 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2422#endif
2423 if (expect_false (ev_is_active (w))) 3325 if (expect_false (ev_is_active (w)))
2424 return; 3326 return;
2425 3327
2426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3328 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2427 3329
2428 evpipe_init (EV_A); 3330#if EV_MULTIPLICITY
3331 assert (("libev: a signal must not be attached to two different loops",
3332 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2429 3333
2430 EV_FREQUENT_CHECK; 3334 signals [w->signum - 1].loop = EV_A;
3335#endif
2431 3336
3337 EV_FREQUENT_CHECK;
3338
3339#if EV_USE_SIGNALFD
3340 if (sigfd == -2)
2432 { 3341 {
2433#ifndef _WIN32 3342 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2434 sigset_t full, prev; 3343 if (sigfd < 0 && errno == EINVAL)
2435 sigfillset (&full); 3344 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2436 sigprocmask (SIG_SETMASK, &full, &prev);
2437#endif
2438 3345
2439 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3346 if (sigfd >= 0)
3347 {
3348 fd_intern (sigfd); /* doing it twice will not hurt */
2440 3349
2441#ifndef _WIN32 3350 sigemptyset (&sigfd_set);
2442 sigprocmask (SIG_SETMASK, &prev, 0); 3351
2443#endif 3352 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3353 ev_set_priority (&sigfd_w, EV_MAXPRI);
3354 ev_io_start (EV_A_ &sigfd_w);
3355 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3356 }
2444 } 3357 }
3358
3359 if (sigfd >= 0)
3360 {
3361 /* TODO: check .head */
3362 sigaddset (&sigfd_set, w->signum);
3363 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3364
3365 signalfd (sigfd, &sigfd_set, 0);
3366 }
3367#endif
2445 3368
2446 ev_start (EV_A_ (W)w, 1); 3369 ev_start (EV_A_ (W)w, 1);
2447 wlist_add (&signals [w->signum - 1].head, (WL)w); 3370 wlist_add (&signals [w->signum - 1].head, (WL)w);
2448 3371
2449 if (!((WL)w)->next) 3372 if (!((WL)w)->next)
3373# if EV_USE_SIGNALFD
3374 if (sigfd < 0) /*TODO*/
3375# endif
2450 { 3376 {
2451#if _WIN32 3377# ifdef _WIN32
3378 evpipe_init (EV_A);
3379
2452 signal (w->signum, ev_sighandler); 3380 signal (w->signum, ev_sighandler);
2453#else 3381# else
2454 struct sigaction sa; 3382 struct sigaction sa;
3383
3384 evpipe_init (EV_A);
3385
2455 sa.sa_handler = ev_sighandler; 3386 sa.sa_handler = ev_sighandler;
2456 sigfillset (&sa.sa_mask); 3387 sigfillset (&sa.sa_mask);
2457 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3388 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2458 sigaction (w->signum, &sa, 0); 3389 sigaction (w->signum, &sa, 0);
3390
3391 if (origflags & EVFLAG_NOSIGMASK)
3392 {
3393 sigemptyset (&sa.sa_mask);
3394 sigaddset (&sa.sa_mask, w->signum);
3395 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3396 }
2459#endif 3397#endif
2460 } 3398 }
2461 3399
2462 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
2463} 3401}
2464 3402
2465void noinline 3403void noinline
… …
2473 3411
2474 wlist_del (&signals [w->signum - 1].head, (WL)w); 3412 wlist_del (&signals [w->signum - 1].head, (WL)w);
2475 ev_stop (EV_A_ (W)w); 3413 ev_stop (EV_A_ (W)w);
2476 3414
2477 if (!signals [w->signum - 1].head) 3415 if (!signals [w->signum - 1].head)
3416 {
3417#if EV_MULTIPLICITY
3418 signals [w->signum - 1].loop = 0; /* unattach from signal */
3419#endif
3420#if EV_USE_SIGNALFD
3421 if (sigfd >= 0)
3422 {
3423 sigset_t ss;
3424
3425 sigemptyset (&ss);
3426 sigaddset (&ss, w->signum);
3427 sigdelset (&sigfd_set, w->signum);
3428
3429 signalfd (sigfd, &sigfd_set, 0);
3430 sigprocmask (SIG_UNBLOCK, &ss, 0);
3431 }
3432 else
3433#endif
2478 signal (w->signum, SIG_DFL); 3434 signal (w->signum, SIG_DFL);
3435 }
2479 3436
2480 EV_FREQUENT_CHECK; 3437 EV_FREQUENT_CHECK;
2481} 3438}
3439
3440#endif
3441
3442#if EV_CHILD_ENABLE
2482 3443
2483void 3444void
2484ev_child_start (EV_P_ ev_child *w) 3445ev_child_start (EV_P_ ev_child *w)
2485{ 3446{
2486#if EV_MULTIPLICITY 3447#if EV_MULTIPLICITY
… …
2490 return; 3451 return;
2491 3452
2492 EV_FREQUENT_CHECK; 3453 EV_FREQUENT_CHECK;
2493 3454
2494 ev_start (EV_A_ (W)w, 1); 3455 ev_start (EV_A_ (W)w, 1);
2495 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3456 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2496 3457
2497 EV_FREQUENT_CHECK; 3458 EV_FREQUENT_CHECK;
2498} 3459}
2499 3460
2500void 3461void
… …
2504 if (expect_false (!ev_is_active (w))) 3465 if (expect_false (!ev_is_active (w)))
2505 return; 3466 return;
2506 3467
2507 EV_FREQUENT_CHECK; 3468 EV_FREQUENT_CHECK;
2508 3469
2509 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3470 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2510 ev_stop (EV_A_ (W)w); 3471 ev_stop (EV_A_ (W)w);
2511 3472
2512 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2513} 3474}
3475
3476#endif
2514 3477
2515#if EV_STAT_ENABLE 3478#if EV_STAT_ENABLE
2516 3479
2517# ifdef _WIN32 3480# ifdef _WIN32
2518# undef lstat 3481# undef lstat
… …
2524#define MIN_STAT_INTERVAL 0.1074891 3487#define MIN_STAT_INTERVAL 0.1074891
2525 3488
2526static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3489static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2527 3490
2528#if EV_USE_INOTIFY 3491#if EV_USE_INOTIFY
2529# define EV_INOTIFY_BUFSIZE 8192 3492
3493/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3494# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2530 3495
2531static void noinline 3496static void noinline
2532infy_add (EV_P_ ev_stat *w) 3497infy_add (EV_P_ ev_stat *w)
2533{ 3498{
2534 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); 3499 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);
2535 3500
2536 if (w->wd < 0) 3501 if (w->wd >= 0)
3502 {
3503 struct statfs sfs;
3504
3505 /* now local changes will be tracked by inotify, but remote changes won't */
3506 /* unless the filesystem is known to be local, we therefore still poll */
3507 /* also do poll on <2.6.25, but with normal frequency */
3508
3509 if (!fs_2625)
3510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3511 else if (!statfs (w->path, &sfs)
3512 && (sfs.f_type == 0x1373 /* devfs */
3513 || sfs.f_type == 0xEF53 /* ext2/3 */
3514 || sfs.f_type == 0x3153464a /* jfs */
3515 || sfs.f_type == 0x52654973 /* reiser3 */
3516 || sfs.f_type == 0x01021994 /* tempfs */
3517 || sfs.f_type == 0x58465342 /* xfs */))
3518 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3519 else
3520 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2537 { 3521 }
3522 else
3523 {
3524 /* can't use inotify, continue to stat */
2538 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3525 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2539 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2540 3526
2541 /* monitor some parent directory for speedup hints */ 3527 /* if path is not there, monitor some parent directory for speedup hints */
2542 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3528 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2543 /* but an efficiency issue only */ 3529 /* but an efficiency issue only */
2544 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3530 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2545 { 3531 {
2546 char path [4096]; 3532 char path [4096];
… …
2556 if (!pend || pend == path) 3542 if (!pend || pend == path)
2557 break; 3543 break;
2558 3544
2559 *pend = 0; 3545 *pend = 0;
2560 w->wd = inotify_add_watch (fs_fd, path, mask); 3546 w->wd = inotify_add_watch (fs_fd, path, mask);
2561 } 3547 }
2562 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3548 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2563 } 3549 }
2564 } 3550 }
2565 3551
2566 if (w->wd >= 0) 3552 if (w->wd >= 0)
2567 {
2568 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3553 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2569 3554
2570 /* now local changes will be tracked by inotify, but remote changes won't */ 3555 /* now re-arm timer, if required */
2571 /* unless the filesystem it known to be local, we therefore still poll */ 3556 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2572 /* also do poll on <2.6.25, but with normal frequency */
2573 struct statfs sfs;
2574
2575 if (fs_2625 && !statfs (w->path, &sfs))
2576 if (sfs.f_type == 0x1373 /* devfs */
2577 || sfs.f_type == 0xEF53 /* ext2/3 */
2578 || sfs.f_type == 0x3153464a /* jfs */
2579 || sfs.f_type == 0x52654973 /* reiser3 */
2580 || sfs.f_type == 0x01021994 /* tempfs */
2581 || sfs.f_type == 0x58465342 /* xfs */)
2582 return;
2583
2584 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2585 ev_timer_again (EV_A_ &w->timer); 3557 ev_timer_again (EV_A_ &w->timer);
2586 } 3558 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2587} 3559}
2588 3560
2589static void noinline 3561static void noinline
2590infy_del (EV_P_ ev_stat *w) 3562infy_del (EV_P_ ev_stat *w)
2591{ 3563{
… …
2594 3566
2595 if (wd < 0) 3567 if (wd < 0)
2596 return; 3568 return;
2597 3569
2598 w->wd = -2; 3570 w->wd = -2;
2599 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3571 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2600 wlist_del (&fs_hash [slot].head, (WL)w); 3572 wlist_del (&fs_hash [slot].head, (WL)w);
2601 3573
2602 /* remove this watcher, if others are watching it, they will rearm */ 3574 /* remove this watcher, if others are watching it, they will rearm */
2603 inotify_rm_watch (fs_fd, wd); 3575 inotify_rm_watch (fs_fd, wd);
2604} 3576}
… …
2606static void noinline 3578static void noinline
2607infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2608{ 3580{
2609 if (slot < 0) 3581 if (slot < 0)
2610 /* overflow, need to check for all hash slots */ 3582 /* overflow, need to check for all hash slots */
2611 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3583 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2612 infy_wd (EV_A_ slot, wd, ev); 3584 infy_wd (EV_A_ slot, wd, ev);
2613 else 3585 else
2614 { 3586 {
2615 WL w_; 3587 WL w_;
2616 3588
2617 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3589 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2618 { 3590 {
2619 ev_stat *w = (ev_stat *)w_; 3591 ev_stat *w = (ev_stat *)w_;
2620 w_ = w_->next; /* lets us remove this watcher and all before it */ 3592 w_ = w_->next; /* lets us remove this watcher and all before it */
2621 3593
2622 if (w->wd == wd || wd == -1) 3594 if (w->wd == wd || wd == -1)
2623 { 3595 {
2624 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2625 { 3597 {
2626 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3598 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2627 w->wd = -1; 3599 w->wd = -1;
2628 infy_add (EV_A_ w); /* re-add, no matter what */ 3600 infy_add (EV_A_ w); /* re-add, no matter what */
2629 } 3601 }
2630 3602
2631 stat_timer_cb (EV_A_ &w->timer, 0); 3603 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2636 3608
2637static void 3609static void
2638infy_cb (EV_P_ ev_io *w, int revents) 3610infy_cb (EV_P_ ev_io *w, int revents)
2639{ 3611{
2640 char buf [EV_INOTIFY_BUFSIZE]; 3612 char buf [EV_INOTIFY_BUFSIZE];
2641 struct inotify_event *ev = (struct inotify_event *)buf;
2642 int ofs; 3613 int ofs;
2643 int len = read (fs_fd, buf, sizeof (buf)); 3614 int len = read (fs_fd, buf, sizeof (buf));
2644 3615
2645 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3616 for (ofs = 0; ofs < len; )
3617 {
3618 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2646 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3619 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3620 ofs += sizeof (struct inotify_event) + ev->len;
3621 }
2647} 3622}
2648 3623
2649inline_size void 3624inline_size void ecb_cold
2650check_2625 (EV_P) 3625ev_check_2625 (EV_P)
2651{ 3626{
2652 /* kernels < 2.6.25 are borked 3627 /* kernels < 2.6.25 are borked
2653 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2654 */ 3629 */
2655 struct utsname buf; 3630 if (ev_linux_version () < 0x020619)
2656 int major, minor, micro;
2657
2658 if (uname (&buf))
2659 return; 3631 return;
2660 3632
2661 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2662 return;
2663
2664 if (major < 2
2665 || (major == 2 && minor < 6)
2666 || (major == 2 && minor == 6 && micro < 25))
2667 return;
2668
2669 fs_2625 = 1; 3633 fs_2625 = 1;
3634}
3635
3636inline_size int
3637infy_newfd (void)
3638{
3639#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3640 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3641 if (fd >= 0)
3642 return fd;
3643#endif
3644 return inotify_init ();
2670} 3645}
2671 3646
2672inline_size void 3647inline_size void
2673infy_init (EV_P) 3648infy_init (EV_P)
2674{ 3649{
2675 if (fs_fd != -2) 3650 if (fs_fd != -2)
2676 return; 3651 return;
2677 3652
2678 fs_fd = -1; 3653 fs_fd = -1;
2679 3654
2680 check_2625 (EV_A); 3655 ev_check_2625 (EV_A);
2681 3656
2682 fs_fd = inotify_init (); 3657 fs_fd = infy_newfd ();
2683 3658
2684 if (fs_fd >= 0) 3659 if (fs_fd >= 0)
2685 { 3660 {
3661 fd_intern (fs_fd);
2686 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3662 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2687 ev_set_priority (&fs_w, EV_MAXPRI); 3663 ev_set_priority (&fs_w, EV_MAXPRI);
2688 ev_io_start (EV_A_ &fs_w); 3664 ev_io_start (EV_A_ &fs_w);
3665 ev_unref (EV_A);
2689 } 3666 }
2690} 3667}
2691 3668
2692inline_size void 3669inline_size void
2693infy_fork (EV_P) 3670infy_fork (EV_P)
… …
2695 int slot; 3672 int slot;
2696 3673
2697 if (fs_fd < 0) 3674 if (fs_fd < 0)
2698 return; 3675 return;
2699 3676
3677 ev_ref (EV_A);
3678 ev_io_stop (EV_A_ &fs_w);
2700 close (fs_fd); 3679 close (fs_fd);
2701 fs_fd = inotify_init (); 3680 fs_fd = infy_newfd ();
2702 3681
3682 if (fs_fd >= 0)
3683 {
3684 fd_intern (fs_fd);
3685 ev_io_set (&fs_w, fs_fd, EV_READ);
3686 ev_io_start (EV_A_ &fs_w);
3687 ev_unref (EV_A);
3688 }
3689
2703 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2704 { 3691 {
2705 WL w_ = fs_hash [slot].head; 3692 WL w_ = fs_hash [slot].head;
2706 fs_hash [slot].head = 0; 3693 fs_hash [slot].head = 0;
2707 3694
2708 while (w_) 3695 while (w_)
… …
2713 w->wd = -1; 3700 w->wd = -1;
2714 3701
2715 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2716 infy_add (EV_A_ w); /* re-add, no matter what */ 3703 infy_add (EV_A_ w); /* re-add, no matter what */
2717 else 3704 else
3705 {
3706 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3707 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2718 ev_timer_again (EV_A_ &w->timer); 3708 ev_timer_again (EV_A_ &w->timer);
3709 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3710 }
2719 } 3711 }
2720 } 3712 }
2721} 3713}
2722 3714
2723#endif 3715#endif
… …
2740static void noinline 3732static void noinline
2741stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3733stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2742{ 3734{
2743 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3735 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2744 3736
2745 /* we copy this here each the time so that */ 3737 ev_statdata prev = w->attr;
2746 /* prev has the old value when the callback gets invoked */
2747 w->prev = w->attr;
2748 ev_stat_stat (EV_A_ w); 3738 ev_stat_stat (EV_A_ w);
2749 3739
2750 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3740 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2751 if ( 3741 if (
2752 w->prev.st_dev != w->attr.st_dev 3742 prev.st_dev != w->attr.st_dev
2753 || w->prev.st_ino != w->attr.st_ino 3743 || prev.st_ino != w->attr.st_ino
2754 || w->prev.st_mode != w->attr.st_mode 3744 || prev.st_mode != w->attr.st_mode
2755 || w->prev.st_nlink != w->attr.st_nlink 3745 || prev.st_nlink != w->attr.st_nlink
2756 || w->prev.st_uid != w->attr.st_uid 3746 || prev.st_uid != w->attr.st_uid
2757 || w->prev.st_gid != w->attr.st_gid 3747 || prev.st_gid != w->attr.st_gid
2758 || w->prev.st_rdev != w->attr.st_rdev 3748 || prev.st_rdev != w->attr.st_rdev
2759 || w->prev.st_size != w->attr.st_size 3749 || prev.st_size != w->attr.st_size
2760 || w->prev.st_atime != w->attr.st_atime 3750 || prev.st_atime != w->attr.st_atime
2761 || w->prev.st_mtime != w->attr.st_mtime 3751 || prev.st_mtime != w->attr.st_mtime
2762 || w->prev.st_ctime != w->attr.st_ctime 3752 || prev.st_ctime != w->attr.st_ctime
2763 ) { 3753 ) {
3754 /* we only update w->prev on actual differences */
3755 /* in case we test more often than invoke the callback, */
3756 /* to ensure that prev is always different to attr */
3757 w->prev = prev;
3758
2764 #if EV_USE_INOTIFY 3759 #if EV_USE_INOTIFY
2765 if (fs_fd >= 0) 3760 if (fs_fd >= 0)
2766 { 3761 {
2767 infy_del (EV_A_ w); 3762 infy_del (EV_A_ w);
2768 infy_add (EV_A_ w); 3763 infy_add (EV_A_ w);
… …
2793 3788
2794 if (fs_fd >= 0) 3789 if (fs_fd >= 0)
2795 infy_add (EV_A_ w); 3790 infy_add (EV_A_ w);
2796 else 3791 else
2797#endif 3792#endif
3793 {
2798 ev_timer_again (EV_A_ &w->timer); 3794 ev_timer_again (EV_A_ &w->timer);
3795 ev_unref (EV_A);
3796 }
2799 3797
2800 ev_start (EV_A_ (W)w, 1); 3798 ev_start (EV_A_ (W)w, 1);
2801 3799
2802 EV_FREQUENT_CHECK; 3800 EV_FREQUENT_CHECK;
2803} 3801}
… …
2812 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
2813 3811
2814#if EV_USE_INOTIFY 3812#if EV_USE_INOTIFY
2815 infy_del (EV_A_ w); 3813 infy_del (EV_A_ w);
2816#endif 3814#endif
3815
3816 if (ev_is_active (&w->timer))
3817 {
3818 ev_ref (EV_A);
2817 ev_timer_stop (EV_A_ &w->timer); 3819 ev_timer_stop (EV_A_ &w->timer);
3820 }
2818 3821
2819 ev_stop (EV_A_ (W)w); 3822 ev_stop (EV_A_ (W)w);
2820 3823
2821 EV_FREQUENT_CHECK; 3824 EV_FREQUENT_CHECK;
2822} 3825}
… …
2867 3870
2868 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2869} 3872}
2870#endif 3873#endif
2871 3874
3875#if EV_PREPARE_ENABLE
2872void 3876void
2873ev_prepare_start (EV_P_ ev_prepare *w) 3877ev_prepare_start (EV_P_ ev_prepare *w)
2874{ 3878{
2875 if (expect_false (ev_is_active (w))) 3879 if (expect_false (ev_is_active (w)))
2876 return; 3880 return;
… …
2902 3906
2903 ev_stop (EV_A_ (W)w); 3907 ev_stop (EV_A_ (W)w);
2904 3908
2905 EV_FREQUENT_CHECK; 3909 EV_FREQUENT_CHECK;
2906} 3910}
3911#endif
2907 3912
3913#if EV_CHECK_ENABLE
2908void 3914void
2909ev_check_start (EV_P_ ev_check *w) 3915ev_check_start (EV_P_ ev_check *w)
2910{ 3916{
2911 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
2912 return; 3918 return;
… …
2938 3944
2939 ev_stop (EV_A_ (W)w); 3945 ev_stop (EV_A_ (W)w);
2940 3946
2941 EV_FREQUENT_CHECK; 3947 EV_FREQUENT_CHECK;
2942} 3948}
3949#endif
2943 3950
2944#if EV_EMBED_ENABLE 3951#if EV_EMBED_ENABLE
2945void noinline 3952void noinline
2946ev_embed_sweep (EV_P_ ev_embed *w) 3953ev_embed_sweep (EV_P_ ev_embed *w)
2947{ 3954{
2948 ev_loop (w->other, EVLOOP_NONBLOCK); 3955 ev_run (w->other, EVRUN_NOWAIT);
2949} 3956}
2950 3957
2951static void 3958static void
2952embed_io_cb (EV_P_ ev_io *io, int revents) 3959embed_io_cb (EV_P_ ev_io *io, int revents)
2953{ 3960{
2954 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3961 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2955 3962
2956 if (ev_cb (w)) 3963 if (ev_cb (w))
2957 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3964 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2958 else 3965 else
2959 ev_loop (w->other, EVLOOP_NONBLOCK); 3966 ev_run (w->other, EVRUN_NOWAIT);
2960} 3967}
2961 3968
2962static void 3969static void
2963embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3970embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2964{ 3971{
2965 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3972 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2966 3973
2967 { 3974 {
2968 struct ev_loop *loop = w->other; 3975 EV_P = w->other;
2969 3976
2970 while (fdchangecnt) 3977 while (fdchangecnt)
2971 { 3978 {
2972 fd_reify (EV_A); 3979 fd_reify (EV_A);
2973 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3980 ev_run (EV_A_ EVRUN_NOWAIT);
2974 } 3981 }
2975 } 3982 }
2976} 3983}
2977 3984
2978static void 3985static void
… …
2981 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3988 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2982 3989
2983 ev_embed_stop (EV_A_ w); 3990 ev_embed_stop (EV_A_ w);
2984 3991
2985 { 3992 {
2986 struct ev_loop *loop = w->other; 3993 EV_P = w->other;
2987 3994
2988 ev_loop_fork (EV_A); 3995 ev_loop_fork (EV_A);
2989 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3996 ev_run (EV_A_ EVRUN_NOWAIT);
2990 } 3997 }
2991 3998
2992 ev_embed_start (EV_A_ w); 3999 ev_embed_start (EV_A_ w);
2993} 4000}
2994 4001
… …
3005{ 4012{
3006 if (expect_false (ev_is_active (w))) 4013 if (expect_false (ev_is_active (w)))
3007 return; 4014 return;
3008 4015
3009 { 4016 {
3010 struct ev_loop *loop = w->other; 4017 EV_P = w->other;
3011 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4018 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3012 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4019 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3013 } 4020 }
3014 4021
3015 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
… …
3042 4049
3043 ev_io_stop (EV_A_ &w->io); 4050 ev_io_stop (EV_A_ &w->io);
3044 ev_prepare_stop (EV_A_ &w->prepare); 4051 ev_prepare_stop (EV_A_ &w->prepare);
3045 ev_fork_stop (EV_A_ &w->fork); 4052 ev_fork_stop (EV_A_ &w->fork);
3046 4053
4054 ev_stop (EV_A_ (W)w);
4055
3047 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
3048} 4057}
3049#endif 4058#endif
3050 4059
3051#if EV_FORK_ENABLE 4060#if EV_FORK_ENABLE
… …
3084 4093
3085 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3086} 4095}
3087#endif 4096#endif
3088 4097
4098#if EV_CLEANUP_ENABLE
4099void
4100ev_cleanup_start (EV_P_ ev_cleanup *w)
4101{
4102 if (expect_false (ev_is_active (w)))
4103 return;
4104
4105 EV_FREQUENT_CHECK;
4106
4107 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4109 cleanups [cleanupcnt - 1] = w;
4110
4111 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK;
4114}
4115
4116void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w)
4118{
4119 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w)))
4121 return;
4122
4123 EV_FREQUENT_CHECK;
4124 ev_ref (EV_A);
4125
4126 {
4127 int active = ev_active (w);
4128
4129 cleanups [active - 1] = cleanups [--cleanupcnt];
4130 ev_active (cleanups [active - 1]) = active;
4131 }
4132
4133 ev_stop (EV_A_ (W)w);
4134
4135 EV_FREQUENT_CHECK;
4136}
4137#endif
4138
3089#if EV_ASYNC_ENABLE 4139#if EV_ASYNC_ENABLE
3090void 4140void
3091ev_async_start (EV_P_ ev_async *w) 4141ev_async_start (EV_P_ ev_async *w)
3092{ 4142{
3093 if (expect_false (ev_is_active (w))) 4143 if (expect_false (ev_is_active (w)))
3094 return; 4144 return;
3095 4145
4146 w->sent = 0;
4147
3096 evpipe_init (EV_A); 4148 evpipe_init (EV_A);
3097 4149
3098 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
3099 4151
3100 ev_start (EV_A_ (W)w, ++asynccnt); 4152 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3127 4179
3128void 4180void
3129ev_async_send (EV_P_ ev_async *w) 4181ev_async_send (EV_P_ ev_async *w)
3130{ 4182{
3131 w->sent = 1; 4183 w->sent = 1;
3132 evpipe_write (EV_A_ &gotasync); 4184 evpipe_write (EV_A_ &async_pending);
3133} 4185}
3134#endif 4186#endif
3135 4187
3136/*****************************************************************************/ 4188/*****************************************************************************/
3137 4189
… …
3177{ 4229{
3178 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4230 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3179 4231
3180 if (expect_false (!once)) 4232 if (expect_false (!once))
3181 { 4233 {
3182 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4234 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3183 return; 4235 return;
3184 } 4236 }
3185 4237
3186 once->cb = cb; 4238 once->cb = cb;
3187 once->arg = arg; 4239 once->arg = arg;
… …
3201 } 4253 }
3202} 4254}
3203 4255
3204/*****************************************************************************/ 4256/*****************************************************************************/
3205 4257
3206#if 0 4258#if EV_WALK_ENABLE
3207void 4259void ecb_cold
3208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3209{ 4261{
3210 int i, j; 4262 int i, j;
3211 ev_watcher_list *wl, *wn; 4263 ev_watcher_list *wl, *wn;
3212 4264
… …
3227#if EV_USE_INOTIFY 4279#if EV_USE_INOTIFY
3228 if (ev_cb ((ev_io *)wl) == infy_cb) 4280 if (ev_cb ((ev_io *)wl) == infy_cb)
3229 ; 4281 ;
3230 else 4282 else
3231#endif 4283#endif
3232 if ((ev_io *)wl != &pipeev) 4284 if ((ev_io *)wl != &pipe_w)
3233 if (types & EV_IO) 4285 if (types & EV_IO)
3234 cb (EV_A_ EV_IO, wl); 4286 cb (EV_A_ EV_IO, wl);
3235 4287
3236 wl = wn; 4288 wl = wn;
3237 } 4289 }
… …
3256 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4308 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3257#endif 4309#endif
3258 4310
3259#if EV_IDLE_ENABLE 4311#if EV_IDLE_ENABLE
3260 if (types & EV_IDLE) 4312 if (types & EV_IDLE)
3261 for (j = NUMPRI; i--; ) 4313 for (j = NUMPRI; j--; )
3262 for (i = idlecnt [j]; i--; ) 4314 for (i = idlecnt [j]; i--; )
3263 cb (EV_A_ EV_IDLE, idles [j][i]); 4315 cb (EV_A_ EV_IDLE, idles [j][i]);
3264#endif 4316#endif
3265 4317
3266#if EV_FORK_ENABLE 4318#if EV_FORK_ENABLE
… …
3274 if (types & EV_ASYNC) 4326 if (types & EV_ASYNC)
3275 for (i = asynccnt; i--; ) 4327 for (i = asynccnt; i--; )
3276 cb (EV_A_ EV_ASYNC, asyncs [i]); 4328 cb (EV_A_ EV_ASYNC, asyncs [i]);
3277#endif 4329#endif
3278 4330
4331#if EV_PREPARE_ENABLE
3279 if (types & EV_PREPARE) 4332 if (types & EV_PREPARE)
3280 for (i = preparecnt; i--; ) 4333 for (i = preparecnt; i--; )
3281#if EV_EMBED_ENABLE 4334# if EV_EMBED_ENABLE
3282 if (ev_cb (prepares [i]) != embed_prepare_cb) 4335 if (ev_cb (prepares [i]) != embed_prepare_cb)
3283#endif 4336# endif
3284 cb (EV_A_ EV_PREPARE, prepares [i]); 4337 cb (EV_A_ EV_PREPARE, prepares [i]);
4338#endif
3285 4339
4340#if EV_CHECK_ENABLE
3286 if (types & EV_CHECK) 4341 if (types & EV_CHECK)
3287 for (i = checkcnt; i--; ) 4342 for (i = checkcnt; i--; )
3288 cb (EV_A_ EV_CHECK, checks [i]); 4343 cb (EV_A_ EV_CHECK, checks [i]);
4344#endif
3289 4345
4346#if EV_SIGNAL_ENABLE
3290 if (types & EV_SIGNAL) 4347 if (types & EV_SIGNAL)
3291 for (i = 0; i < signalmax; ++i) 4348 for (i = 0; i < EV_NSIG - 1; ++i)
3292 for (wl = signals [i].head; wl; ) 4349 for (wl = signals [i].head; wl; )
3293 { 4350 {
3294 wn = wl->next; 4351 wn = wl->next;
3295 cb (EV_A_ EV_SIGNAL, wl); 4352 cb (EV_A_ EV_SIGNAL, wl);
3296 wl = wn; 4353 wl = wn;
3297 } 4354 }
4355#endif
3298 4356
4357#if EV_CHILD_ENABLE
3299 if (types & EV_CHILD) 4358 if (types & EV_CHILD)
3300 for (i = EV_PID_HASHSIZE; i--; ) 4359 for (i = (EV_PID_HASHSIZE); i--; )
3301 for (wl = childs [i]; wl; ) 4360 for (wl = childs [i]; wl; )
3302 { 4361 {
3303 wn = wl->next; 4362 wn = wl->next;
3304 cb (EV_A_ EV_CHILD, wl); 4363 cb (EV_A_ EV_CHILD, wl);
3305 wl = wn; 4364 wl = wn;
3306 } 4365 }
4366#endif
3307/* EV_STAT 0x00001000 /* stat data changed */ 4367/* EV_STAT 0x00001000 /* stat data changed */
3308/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4368/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3309} 4369}
3310#endif 4370#endif
3311 4371
3312#if EV_MULTIPLICITY 4372#if EV_MULTIPLICITY
3313 #include "ev_wrap.h" 4373 #include "ev_wrap.h"
3314#endif 4374#endif
3315 4375
3316#ifdef __cplusplus 4376EV_CPP(})
3317}
3318#endif
3319 4377

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