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Comparing libev/ev.c (file contents):
Revision 1.269 by root, Wed Oct 29 06:32:48 2008 UTC vs.
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
63# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
65# endif 79# endif
66# endif 80# endif
67 81
82# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 83# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# endif
71# else 86# else
87# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 88# define EV_USE_NANOSLEEP 0
89# endif
90
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# ifndef EV_USE_SELECT
93# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 94# endif
74# endif
75
76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
78# define EV_USE_SELECT 1
79# else 95# else
96# undef EV_USE_SELECT
80# define EV_USE_SELECT 0 97# define EV_USE_SELECT 0
98# endif
99
100# if HAVE_POLL && HAVE_POLL_H
101# ifndef EV_USE_POLL
102# define EV_USE_POLL EV_FEATURE_BACKENDS
81# endif 103# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 104# else
105# undef EV_USE_POLL
88# define EV_USE_POLL 0 106# define EV_USE_POLL 0
107# endif
108
109# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
110# ifndef EV_USE_EPOLL
111# define EV_USE_EPOLL EV_FEATURE_BACKENDS
89# endif 112# endif
113# else
114# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0
90# endif 116# endif
91 117
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
92# ifndef EV_USE_EPOLL 119# ifndef EV_USE_KQUEUE
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif 121# endif
122# else
123# undef EV_USE_KQUEUE
124# define EV_USE_KQUEUE 0
98# endif 125# endif
99 126
100# ifndef EV_USE_KQUEUE 127# if HAVE_PORT_H && HAVE_PORT_CREATE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 128# ifndef EV_USE_PORT
102# define EV_USE_KQUEUE 1 129# define EV_USE_PORT EV_FEATURE_BACKENDS
103# else
104# define EV_USE_KQUEUE 0
105# endif 130# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else 131# else
132# undef EV_USE_PORT
112# define EV_USE_PORT 0 133# define EV_USE_PORT 0
134# endif
135
136# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
137# ifndef EV_USE_INOTIFY
138# define EV_USE_INOTIFY EV_FEATURE_OS
113# endif 139# endif
114# endif
115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else 140# else
141# undef EV_USE_INOTIFY
120# define EV_USE_INOTIFY 0 142# define EV_USE_INOTIFY 0
143# endif
144
145# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
146# ifndef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD EV_FEATURE_OS
121# endif 148# endif
149# else
150# undef EV_USE_SIGNALFD
151# define EV_USE_SIGNALFD 0
122# endif 152# endif
123 153
154# if HAVE_EVENTFD
124# ifndef EV_USE_EVENTFD 155# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 156# define EV_USE_EVENTFD EV_FEATURE_OS
127# else
128# define EV_USE_EVENTFD 0
129# endif 157# endif
158# else
159# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0
130# endif 161# endif
131 162
132#endif 163#endif
133 164
134#include <math.h> 165#include <math.h>
135#include <stdlib.h> 166#include <stdlib.h>
167#include <string.h>
136#include <fcntl.h> 168#include <fcntl.h>
137#include <stddef.h> 169#include <stddef.h>
138 170
139#include <stdio.h> 171#include <stdio.h>
140 172
141#include <assert.h> 173#include <assert.h>
142#include <errno.h> 174#include <errno.h>
143#include <sys/types.h> 175#include <sys/types.h>
144#include <time.h> 176#include <time.h>
177#include <limits.h>
145 178
146#include <signal.h> 179#include <signal.h>
147 180
148#ifdef EV_H 181#ifdef EV_H
149# include EV_H 182# include EV_H
… …
160# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 194# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
164# endif 197# endif
198# undef EV_AVOID_STDIO
165#endif 199#endif
166 200
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 201/* this block tries to deduce configuration from header-defined symbols and defaults */
202
203/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG)
205/* use what's provided */
206#elif defined (NSIG)
207# define EV_NSIG (NSIG)
208#elif defined(_NSIG)
209# define EV_NSIG (_NSIG)
210#elif defined (SIGMAX)
211# define EV_NSIG (SIGMAX+1)
212#elif defined (SIG_MAX)
213# define EV_NSIG (SIG_MAX+1)
214#elif defined (_SIG_MAX)
215# define EV_NSIG (_SIG_MAX+1)
216#elif defined (MAXSIG)
217# define EV_NSIG (MAXSIG+1)
218#elif defined (MAX_SIG)
219# define EV_NSIG (MAX_SIG+1)
220#elif defined (SIGARRAYSIZE)
221# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
222#elif defined (_sys_nsig)
223# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
224#else
225# error "unable to find value for NSIG, please report"
226/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */
228# define EV_NSIG 65
229#endif
230
231#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else
235# define EV_USE_CLOCK_SYSCALL 0
236# endif
237#endif
168 238
169#ifndef EV_USE_MONOTONIC 239#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 241# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 242# else
173# define EV_USE_MONOTONIC 0 243# define EV_USE_MONOTONIC 0
174# endif 244# endif
175#endif 245#endif
176 246
177#ifndef EV_USE_REALTIME 247#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 248# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 249#endif
180 250
181#ifndef EV_USE_NANOSLEEP 251#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 252# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 253# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 254# else
185# define EV_USE_NANOSLEEP 0 255# define EV_USE_NANOSLEEP 0
186# endif 256# endif
187#endif 257#endif
188 258
189#ifndef EV_USE_SELECT 259#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 260# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 261#endif
192 262
193#ifndef EV_USE_POLL 263#ifndef EV_USE_POLL
194# ifdef _WIN32 264# ifdef _WIN32
195# define EV_USE_POLL 0 265# define EV_USE_POLL 0
196# else 266# else
197# define EV_USE_POLL 1 267# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 268# endif
199#endif 269#endif
200 270
201#ifndef EV_USE_EPOLL 271#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 273# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 274# else
205# define EV_USE_EPOLL 0 275# define EV_USE_EPOLL 0
206# endif 276# endif
207#endif 277#endif
208 278
… …
214# define EV_USE_PORT 0 284# define EV_USE_PORT 0
215#endif 285#endif
216 286
217#ifndef EV_USE_INOTIFY 287#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 289# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 290# else
221# define EV_USE_INOTIFY 0 291# define EV_USE_INOTIFY 0
222# endif 292# endif
223#endif 293#endif
224 294
225#ifndef EV_PID_HASHSIZE 295#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 296# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 297#endif
232 298
233#ifndef EV_INOTIFY_HASHSIZE 299#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 300# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 301#endif
240 302
241#ifndef EV_USE_EVENTFD 303#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 304# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 305# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 306# else
245# define EV_USE_EVENTFD 0 307# define EV_USE_EVENTFD 0
308# endif
309#endif
310
311#ifndef EV_USE_SIGNALFD
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
313# define EV_USE_SIGNALFD EV_FEATURE_OS
314# else
315# define EV_USE_SIGNALFD 0
246# endif 316# endif
247#endif 317#endif
248 318
249#if 0 /* debugging */ 319#if 0 /* debugging */
250# define EV_VERIFY 3 320# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 321# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 322# define EV_HEAP_CACHE_AT 1
253#endif 323#endif
254 324
255#ifndef EV_VERIFY 325#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 326# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 327#endif
258 328
259#ifndef EV_USE_4HEAP 329#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 330# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 331#endif
262 332
263#ifndef EV_HEAP_CACHE_AT 333#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 334# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
335#endif
336
337/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
338/* which makes programs even slower. might work on other unices, too. */
339#if EV_USE_CLOCK_SYSCALL
340# include <syscall.h>
341# ifdef SYS_clock_gettime
342# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
343# undef EV_USE_MONOTONIC
344# define EV_USE_MONOTONIC 1
345# else
346# undef EV_USE_CLOCK_SYSCALL
347# define EV_USE_CLOCK_SYSCALL 0
348# endif
265#endif 349#endif
266 350
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 351/* this block fixes any misconfiguration where we know we run into trouble otherwise */
352
353#ifdef _AIX
354/* AIX has a completely broken poll.h header */
355# undef EV_USE_POLL
356# define EV_USE_POLL 0
357#endif
268 358
269#ifndef CLOCK_MONOTONIC 359#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 360# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 361# define EV_USE_MONOTONIC 0
272#endif 362#endif
… …
287# endif 377# endif
288#endif 378#endif
289 379
290#if EV_USE_INOTIFY 380#if EV_USE_INOTIFY
291# include <sys/utsname.h> 381# include <sys/utsname.h>
382# include <sys/statfs.h>
292# include <sys/inotify.h> 383# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 385# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 386# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 387# define EV_USE_INOTIFY 0
… …
302#endif 393#endif
303 394
304#if EV_USE_EVENTFD 395#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 396/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 397# include <stdint.h>
398# ifndef EFD_NONBLOCK
399# define EFD_NONBLOCK O_NONBLOCK
400# endif
401# ifndef EFD_CLOEXEC
402# ifdef O_CLOEXEC
403# define EFD_CLOEXEC O_CLOEXEC
404# else
405# define EFD_CLOEXEC 02000000
406# endif
407# endif
307# ifdef __cplusplus 408# ifdef __cplusplus
308extern "C" { 409extern "C" {
309# endif 410# endif
310int eventfd (unsigned int initval, int flags); 411int (eventfd) (unsigned int initval, int flags);
311# ifdef __cplusplus 412# ifdef __cplusplus
312} 413}
313# endif 414# endif
314#endif 415#endif
315 416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags);
434
435struct signalfd_siginfo
436{
437 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)];
439};
440# ifdef __cplusplus
441}
442# endif
443#endif
444
445
316/**/ 446/**/
317 447
318#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 450#else
321# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
322#endif 452#endif
323 453
324/* 454/*
… …
331 */ 461 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333 463
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 465#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 466
338#if __GNUC__ >= 4 467#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 468# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 469# define noinline __attribute__ ((noinline))
341#else 470#else
… …
348 477
349#define expect_false(expr) expect ((expr) != 0, 0) 478#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 479#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 480#define inline_size static inline
352 481
353#if EV_MINIMAL 482#if EV_FEATURE_CODE
483# define inline_speed static inline
484#else
354# define inline_speed static noinline 485# define inline_speed static noinline
486#endif
487
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
489
490#if EV_MINPRI == EV_MAXPRI
491# define ABSPRI(w) (((W)w), 0)
355#else 492#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif
361 495
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 496#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 497#define EMPTY2(a,b) /* used to suppress some warnings */
364 498
365typedef ev_watcher *W; 499typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 501typedef ev_watcher_time *WT;
368 502
369#define ev_active(w) ((W)(w))->active 503#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 504#define ev_at(w) ((WT)(w))->at
371 505
372#if EV_USE_MONOTONIC 506#if EV_USE_REALTIME
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 507/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */ 508/* giving it a reasonably high chance of working on typical architetcures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif
511
512#if EV_USE_MONOTONIC
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
514#endif
515
516#ifndef EV_FD_TO_WIN32_HANDLE
517# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
518#endif
519#ifndef EV_WIN32_HANDLE_TO_FD
520# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
521#endif
522#ifndef EV_WIN32_CLOSE_FD
523# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 524#endif
377 525
378#ifdef _WIN32 526#ifdef _WIN32
379# include "ev_win32.c" 527# include "ev_win32.c"
380#endif 528#endif
381 529
382/*****************************************************************************/ 530/*****************************************************************************/
531
532#if EV_AVOID_STDIO
533static void noinline
534ev_printerr (const char *msg)
535{
536 write (STDERR_FILENO, msg, strlen (msg));
537}
538#endif
383 539
384static void (*syserr_cb)(const char *msg); 540static void (*syserr_cb)(const char *msg);
385 541
386void 542void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 543ev_set_syserr_cb (void (*cb)(const char *msg))
… …
397 553
398 if (syserr_cb) 554 if (syserr_cb)
399 syserr_cb (msg); 555 syserr_cb (msg);
400 else 556 else
401 { 557 {
558#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg);
562 ev_printerr (": ");
563 ev_printerr (err);
564 ev_printerr ("\n");
565#else
402 perror (msg); 566 perror (msg);
567#endif
403 abort (); 568 abort ();
404 } 569 }
405} 570}
406 571
407static void * 572static void *
408ev_realloc_emul (void *ptr, long size) 573ev_realloc_emul (void *ptr, long size)
409{ 574{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
410 /* some systems, notably openbsd and darwin, fail to properly 578 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 579 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 580 * the single unix specification, so work around them here.
413 */ 581 */
414 582
415 if (size) 583 if (size)
416 return realloc (ptr, size); 584 return realloc (ptr, size);
417 585
418 free (ptr); 586 free (ptr);
419 return 0; 587 return 0;
588#endif
420} 589}
421 590
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 592
424void 593void
… …
432{ 601{
433 ptr = alloc (ptr, size); 602 ptr = alloc (ptr, size);
434 603
435 if (!ptr && size) 604 if (!ptr && size)
436 { 605 {
606#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n");
608#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
610#endif
438 abort (); 611 abort ();
439 } 612 }
440 613
441 return ptr; 614 return ptr;
442} 615}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 617#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 618#define ev_free(ptr) ev_realloc ((ptr), 0)
446 619
447/*****************************************************************************/ 620/*****************************************************************************/
448 621
622/* set in reify when reification needed */
623#define EV_ANFD_REIFY 1
624
625/* file descriptor info structure */
449typedef struct 626typedef struct
450{ 627{
451 WL head; 628 WL head;
452 unsigned char events; 629 unsigned char events; /* the events watched for */
453 unsigned char reify; 630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; 632 unsigned char unused;
456#if EV_USE_EPOLL 633#if EV_USE_EPOLL
457 unsigned int egen; /* generation counter to counter epoll bugs */ 634 unsigned int egen; /* generation counter to counter epoll bugs */
458#endif 635#endif
459#if EV_SELECT_IS_WINSOCKET 636#if EV_SELECT_IS_WINSOCKET
460 SOCKET handle; 637 SOCKET handle;
461#endif 638#endif
462} ANFD; 639} ANFD;
463 640
641/* stores the pending event set for a given watcher */
464typedef struct 642typedef struct
465{ 643{
466 W w; 644 W w;
467 int events; 645 int events; /* the pending event set for the given watcher */
468} ANPENDING; 646} ANPENDING;
469 647
470#if EV_USE_INOTIFY 648#if EV_USE_INOTIFY
471/* hash table entry per inotify-id */ 649/* hash table entry per inotify-id */
472typedef struct 650typedef struct
… …
475} ANFS; 653} ANFS;
476#endif 654#endif
477 655
478/* Heap Entry */ 656/* Heap Entry */
479#if EV_HEAP_CACHE_AT 657#if EV_HEAP_CACHE_AT
658 /* a heap element */
480 typedef struct { 659 typedef struct {
481 ev_tstamp at; 660 ev_tstamp at;
482 WT w; 661 WT w;
483 } ANHE; 662 } ANHE;
484 663
485 #define ANHE_w(he) (he).w /* access watcher, read-write */ 664 #define ANHE_w(he) (he).w /* access watcher, read-write */
486 #define ANHE_at(he) (he).at /* access cached at, read-only */ 665 #define ANHE_at(he) (he).at /* access cached at, read-only */
487 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 666 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
488#else 667#else
668 /* a heap element */
489 typedef WT ANHE; 669 typedef WT ANHE;
490 670
491 #define ANHE_w(he) (he) 671 #define ANHE_w(he) (he)
492 #define ANHE_at(he) (he)->at 672 #define ANHE_at(he) (he)->at
493 #define ANHE_at_cache(he) 673 #define ANHE_at_cache(he)
… …
517 697
518 static int ev_default_loop_ptr; 698 static int ev_default_loop_ptr;
519 699
520#endif 700#endif
521 701
702#if EV_FEATURE_API
703# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
704# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
705# define EV_INVOKE_PENDING invoke_cb (EV_A)
706#else
707# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif
711
712#define EVUNLOOP_RECURSE 0x80
713
522/*****************************************************************************/ 714/*****************************************************************************/
523 715
716#ifndef EV_HAVE_EV_TIME
524ev_tstamp 717ev_tstamp
525ev_time (void) 718ev_time (void)
526{ 719{
527#if EV_USE_REALTIME 720#if EV_USE_REALTIME
721 if (expect_true (have_realtime))
722 {
528 struct timespec ts; 723 struct timespec ts;
529 clock_gettime (CLOCK_REALTIME, &ts); 724 clock_gettime (CLOCK_REALTIME, &ts);
530 return ts.tv_sec + ts.tv_nsec * 1e-9; 725 return ts.tv_sec + ts.tv_nsec * 1e-9;
531#else 726 }
727#endif
728
532 struct timeval tv; 729 struct timeval tv;
533 gettimeofday (&tv, 0); 730 gettimeofday (&tv, 0);
534 return tv.tv_sec + tv.tv_usec * 1e-6; 731 return tv.tv_sec + tv.tv_usec * 1e-6;
535#endif
536} 732}
733#endif
537 734
538ev_tstamp inline_size 735inline_size ev_tstamp
539get_clock (void) 736get_clock (void)
540{ 737{
541#if EV_USE_MONOTONIC 738#if EV_USE_MONOTONIC
542 if (expect_true (have_monotonic)) 739 if (expect_true (have_monotonic))
543 { 740 {
… …
577 774
578 tv.tv_sec = (time_t)delay; 775 tv.tv_sec = (time_t)delay;
579 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
580 777
581 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
582 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 779 /* something not guaranteed by newer posix versions, but guaranteed */
583 /* by older ones */ 780 /* by older ones */
584 select (0, 0, 0, 0, &tv); 781 select (0, 0, 0, 0, &tv);
585#endif 782#endif
586 } 783 }
587} 784}
588 785
589/*****************************************************************************/ 786/*****************************************************************************/
590 787
591#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
592 789
593int inline_size 790/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */
792inline_size int
594array_nextsize (int elem, int cur, int cnt) 793array_nextsize (int elem, int cur, int cnt)
595{ 794{
596 int ncur = cur + 1; 795 int ncur = cur + 1;
597 796
598 do 797 do
… …
639 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 838 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
640 } 839 }
641#endif 840#endif
642 841
643#define array_free(stem, idx) \ 842#define array_free(stem, idx) \
644 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 843 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
645 844
646/*****************************************************************************/ 845/*****************************************************************************/
846
847/* dummy callback for pending events */
848static void noinline
849pendingcb (EV_P_ ev_prepare *w, int revents)
850{
851}
647 852
648void noinline 853void noinline
649ev_feed_event (EV_P_ void *w, int revents) 854ev_feed_event (EV_P_ void *w, int revents)
650{ 855{
651 W w_ = (W)w; 856 W w_ = (W)w;
… …
660 pendings [pri][w_->pending - 1].w = w_; 865 pendings [pri][w_->pending - 1].w = w_;
661 pendings [pri][w_->pending - 1].events = revents; 866 pendings [pri][w_->pending - 1].events = revents;
662 } 867 }
663} 868}
664 869
665void inline_speed 870inline_speed void
871feed_reverse (EV_P_ W w)
872{
873 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
874 rfeeds [rfeedcnt++] = w;
875}
876
877inline_size void
878feed_reverse_done (EV_P_ int revents)
879{
880 do
881 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
882 while (rfeedcnt);
883}
884
885inline_speed void
666queue_events (EV_P_ W *events, int eventcnt, int type) 886queue_events (EV_P_ W *events, int eventcnt, int type)
667{ 887{
668 int i; 888 int i;
669 889
670 for (i = 0; i < eventcnt; ++i) 890 for (i = 0; i < eventcnt; ++i)
671 ev_feed_event (EV_A_ events [i], type); 891 ev_feed_event (EV_A_ events [i], type);
672} 892}
673 893
674/*****************************************************************************/ 894/*****************************************************************************/
675 895
676void inline_speed 896inline_speed void
677fd_event (EV_P_ int fd, int revents) 897fd_event_nocheck (EV_P_ int fd, int revents)
678{ 898{
679 ANFD *anfd = anfds + fd; 899 ANFD *anfd = anfds + fd;
680 ev_io *w; 900 ev_io *w;
681 901
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 902 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
686 if (ev) 906 if (ev)
687 ev_feed_event (EV_A_ (W)w, ev); 907 ev_feed_event (EV_A_ (W)w, ev);
688 } 908 }
689} 909}
690 910
911/* do not submit kernel events for fds that have reify set */
912/* because that means they changed while we were polling for new events */
913inline_speed void
914fd_event (EV_P_ int fd, int revents)
915{
916 ANFD *anfd = anfds + fd;
917
918 if (expect_true (!anfd->reify))
919 fd_event_nocheck (EV_A_ fd, revents);
920}
921
691void 922void
692ev_feed_fd_event (EV_P_ int fd, int revents) 923ev_feed_fd_event (EV_P_ int fd, int revents)
693{ 924{
694 if (fd >= 0 && fd < anfdmax) 925 if (fd >= 0 && fd < anfdmax)
695 fd_event (EV_A_ fd, revents); 926 fd_event_nocheck (EV_A_ fd, revents);
696} 927}
697 928
698void inline_size 929/* make sure the external fd watch events are in-sync */
930/* with the kernel/libev internal state */
931inline_size void
699fd_reify (EV_P) 932fd_reify (EV_P)
700{ 933{
701 int i; 934 int i;
702 935
703 for (i = 0; i < fdchangecnt; ++i) 936 for (i = 0; i < fdchangecnt; ++i)
… …
713 946
714#if EV_SELECT_IS_WINSOCKET 947#if EV_SELECT_IS_WINSOCKET
715 if (events) 948 if (events)
716 { 949 {
717 unsigned long arg; 950 unsigned long arg;
718 #ifdef EV_FD_TO_WIN32_HANDLE
719 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
720 #else
721 anfd->handle = _get_osfhandle (fd);
722 #endif
723 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
724 } 953 }
725#endif 954#endif
726 955
727 { 956 {
728 unsigned char o_events = anfd->events; 957 unsigned char o_events = anfd->events;
729 unsigned char o_reify = anfd->reify; 958 unsigned char o_reify = anfd->reify;
730 959
731 anfd->reify = 0; 960 anfd->reify = 0;
732 anfd->events = events; 961 anfd->events = events;
733 962
734 if (o_events != events || o_reify & EV_IOFDSET) 963 if (o_events != events || o_reify & EV__IOFDSET)
735 backend_modify (EV_A_ fd, o_events, events); 964 backend_modify (EV_A_ fd, o_events, events);
736 } 965 }
737 } 966 }
738 967
739 fdchangecnt = 0; 968 fdchangecnt = 0;
740} 969}
741 970
742void inline_size 971/* something about the given fd changed */
972inline_size void
743fd_change (EV_P_ int fd, int flags) 973fd_change (EV_P_ int fd, int flags)
744{ 974{
745 unsigned char reify = anfds [fd].reify; 975 unsigned char reify = anfds [fd].reify;
746 anfds [fd].reify |= flags; 976 anfds [fd].reify |= flags;
747 977
… …
751 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
752 fdchanges [fdchangecnt - 1] = fd; 982 fdchanges [fdchangecnt - 1] = fd;
753 } 983 }
754} 984}
755 985
756void inline_speed 986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void
757fd_kill (EV_P_ int fd) 988fd_kill (EV_P_ int fd)
758{ 989{
759 ev_io *w; 990 ev_io *w;
760 991
761 while ((w = (ev_io *)anfds [fd].head)) 992 while ((w = (ev_io *)anfds [fd].head))
… …
763 ev_io_stop (EV_A_ w); 994 ev_io_stop (EV_A_ w);
764 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
765 } 996 }
766} 997}
767 998
768int inline_size 999/* check whether the given fd is actually valid, for error recovery */
1000inline_size int
769fd_valid (int fd) 1001fd_valid (int fd)
770{ 1002{
771#ifdef _WIN32 1003#ifdef _WIN32
772 return _get_osfhandle (fd) != -1; 1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
773#else 1005#else
774 return fcntl (fd, F_GETFD) != -1; 1006 return fcntl (fd, F_GETFD) != -1;
775#endif 1007#endif
776} 1008}
777 1009
… …
795 1027
796 for (fd = anfdmax; fd--; ) 1028 for (fd = anfdmax; fd--; )
797 if (anfds [fd].events) 1029 if (anfds [fd].events)
798 { 1030 {
799 fd_kill (EV_A_ fd); 1031 fd_kill (EV_A_ fd);
800 return; 1032 break;
801 } 1033 }
802} 1034}
803 1035
804/* usually called after fork if backend needs to re-arm all fds from scratch */ 1036/* usually called after fork if backend needs to re-arm all fds from scratch */
805static void noinline 1037static void noinline
… …
810 for (fd = 0; fd < anfdmax; ++fd) 1042 for (fd = 0; fd < anfdmax; ++fd)
811 if (anfds [fd].events) 1043 if (anfds [fd].events)
812 { 1044 {
813 anfds [fd].events = 0; 1045 anfds [fd].events = 0;
814 anfds [fd].emask = 0; 1046 anfds [fd].emask = 0;
815 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1047 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
816 } 1048 }
1049}
1050
1051/* used to prepare libev internal fd's */
1052/* this is not fork-safe */
1053inline_speed void
1054fd_intern (int fd)
1055{
1056#ifdef _WIN32
1057 unsigned long arg = 1;
1058 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1059#else
1060 fcntl (fd, F_SETFD, FD_CLOEXEC);
1061 fcntl (fd, F_SETFL, O_NONBLOCK);
1062#endif
817} 1063}
818 1064
819/*****************************************************************************/ 1065/*****************************************************************************/
820 1066
821/* 1067/*
… …
836#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1082#define HEAP0 (DHEAP - 1) /* index of first element in heap */
837#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1083#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
838#define UPHEAP_DONE(p,k) ((p) == (k)) 1084#define UPHEAP_DONE(p,k) ((p) == (k))
839 1085
840/* away from the root */ 1086/* away from the root */
841void inline_speed 1087inline_speed void
842downheap (ANHE *heap, int N, int k) 1088downheap (ANHE *heap, int N, int k)
843{ 1089{
844 ANHE he = heap [k]; 1090 ANHE he = heap [k];
845 ANHE *E = heap + N + HEAP0; 1091 ANHE *E = heap + N + HEAP0;
846 1092
… …
886#define HEAP0 1 1132#define HEAP0 1
887#define HPARENT(k) ((k) >> 1) 1133#define HPARENT(k) ((k) >> 1)
888#define UPHEAP_DONE(p,k) (!(p)) 1134#define UPHEAP_DONE(p,k) (!(p))
889 1135
890/* away from the root */ 1136/* away from the root */
891void inline_speed 1137inline_speed void
892downheap (ANHE *heap, int N, int k) 1138downheap (ANHE *heap, int N, int k)
893{ 1139{
894 ANHE he = heap [k]; 1140 ANHE he = heap [k];
895 1141
896 for (;;) 1142 for (;;)
897 { 1143 {
898 int c = k << 1; 1144 int c = k << 1;
899 1145
900 if (c > N + HEAP0 - 1) 1146 if (c >= N + HEAP0)
901 break; 1147 break;
902 1148
903 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1149 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
904 ? 1 : 0; 1150 ? 1 : 0;
905 1151
… …
916 ev_active (ANHE_w (he)) = k; 1162 ev_active (ANHE_w (he)) = k;
917} 1163}
918#endif 1164#endif
919 1165
920/* towards the root */ 1166/* towards the root */
921void inline_speed 1167inline_speed void
922upheap (ANHE *heap, int k) 1168upheap (ANHE *heap, int k)
923{ 1169{
924 ANHE he = heap [k]; 1170 ANHE he = heap [k];
925 1171
926 for (;;) 1172 for (;;)
… …
937 1183
938 heap [k] = he; 1184 heap [k] = he;
939 ev_active (ANHE_w (he)) = k; 1185 ev_active (ANHE_w (he)) = k;
940} 1186}
941 1187
942void inline_size 1188/* move an element suitably so it is in a correct place */
1189inline_size void
943adjustheap (ANHE *heap, int N, int k) 1190adjustheap (ANHE *heap, int N, int k)
944{ 1191{
945 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1192 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
946 upheap (heap, k); 1193 upheap (heap, k);
947 else 1194 else
948 downheap (heap, N, k); 1195 downheap (heap, N, k);
949} 1196}
950 1197
951/* rebuild the heap: this function is used only once and executed rarely */ 1198/* rebuild the heap: this function is used only once and executed rarely */
952void inline_size 1199inline_size void
953reheap (ANHE *heap, int N) 1200reheap (ANHE *heap, int N)
954{ 1201{
955 int i; 1202 int i;
956 1203
957 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1204 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
960 upheap (heap, i + HEAP0); 1207 upheap (heap, i + HEAP0);
961} 1208}
962 1209
963/*****************************************************************************/ 1210/*****************************************************************************/
964 1211
1212/* associate signal watchers to a signal signal */
965typedef struct 1213typedef struct
966{ 1214{
1215 EV_ATOMIC_T pending;
1216#if EV_MULTIPLICITY
1217 EV_P;
1218#endif
967 WL head; 1219 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1220} ANSIG;
970 1221
971static ANSIG *signals; 1222static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975 1223
976/*****************************************************************************/ 1224/*****************************************************************************/
977 1225
978void inline_speed 1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
979fd_intern (int fd)
980{
981#ifdef _WIN32
982 unsigned long arg = 1;
983 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
984#else
985 fcntl (fd, F_SETFD, FD_CLOEXEC);
986 fcntl (fd, F_SETFL, O_NONBLOCK);
987#endif
988}
989 1227
990static void noinline 1228static void noinline
991evpipe_init (EV_P) 1229evpipe_init (EV_P)
992{ 1230{
993 if (!ev_is_active (&pipeev)) 1231 if (!ev_is_active (&pipe_w))
994 { 1232 {
995#if EV_USE_EVENTFD 1233# if EV_USE_EVENTFD
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL)
996 if ((evfd = eventfd (0, 0)) >= 0) 1236 evfd = eventfd (0, 0);
1237
1238 if (evfd >= 0)
997 { 1239 {
998 evpipe [0] = -1; 1240 evpipe [0] = -1;
999 fd_intern (evfd); 1241 fd_intern (evfd); /* doing it twice doesn't hurt */
1000 ev_io_set (&pipeev, evfd, EV_READ); 1242 ev_io_set (&pipe_w, evfd, EV_READ);
1001 } 1243 }
1002 else 1244 else
1003#endif 1245# endif
1004 { 1246 {
1005 while (pipe (evpipe)) 1247 while (pipe (evpipe))
1006 ev_syserr ("(libev) error creating signal/async pipe"); 1248 ev_syserr ("(libev) error creating signal/async pipe");
1007 1249
1008 fd_intern (evpipe [0]); 1250 fd_intern (evpipe [0]);
1009 fd_intern (evpipe [1]); 1251 fd_intern (evpipe [1]);
1010 ev_io_set (&pipeev, evpipe [0], EV_READ); 1252 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1011 } 1253 }
1012 1254
1013 ev_io_start (EV_A_ &pipeev); 1255 ev_io_start (EV_A_ &pipe_w);
1014 ev_unref (EV_A); /* watcher should not keep loop alive */ 1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1015 } 1257 }
1016} 1258}
1017 1259
1018void inline_size 1260inline_size void
1019evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1020{ 1262{
1021 if (!*flag) 1263 if (!*flag)
1022 { 1264 {
1023 int old_errno = errno; /* save errno because write might clobber it */ 1265 int old_errno = errno; /* save errno because write might clobber it */
1266 char dummy;
1024 1267
1025 *flag = 1; 1268 *flag = 1;
1026 1269
1027#if EV_USE_EVENTFD 1270#if EV_USE_EVENTFD
1028 if (evfd >= 0) 1271 if (evfd >= 0)
… …
1030 uint64_t counter = 1; 1273 uint64_t counter = 1;
1031 write (evfd, &counter, sizeof (uint64_t)); 1274 write (evfd, &counter, sizeof (uint64_t));
1032 } 1275 }
1033 else 1276 else
1034#endif 1277#endif
1035 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1036 1279
1037 errno = old_errno; 1280 errno = old_errno;
1038 } 1281 }
1039} 1282}
1040 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1041static void 1286static void
1042pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1043{ 1288{
1289 int i;
1290
1044#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1045 if (evfd >= 0) 1292 if (evfd >= 0)
1046 { 1293 {
1047 uint64_t counter; 1294 uint64_t counter;
1048 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
… …
1052 { 1299 {
1053 char dummy; 1300 char dummy;
1054 read (evpipe [0], &dummy, 1); 1301 read (evpipe [0], &dummy, 1);
1055 } 1302 }
1056 1303
1057 if (gotsig && ev_is_default_loop (EV_A)) 1304 if (sig_pending)
1058 { 1305 {
1059 int signum; 1306 sig_pending = 0;
1060 gotsig = 0;
1061 1307
1062 for (signum = signalmax; signum--; ) 1308 for (i = EV_NSIG - 1; i--; )
1063 if (signals [signum].gotsig) 1309 if (expect_false (signals [i].pending))
1064 ev_feed_signal_event (EV_A_ signum + 1); 1310 ev_feed_signal_event (EV_A_ i + 1);
1065 } 1311 }
1066 1312
1067#if EV_ASYNC_ENABLE 1313#if EV_ASYNC_ENABLE
1068 if (gotasync) 1314 if (async_pending)
1069 { 1315 {
1070 int i; 1316 async_pending = 0;
1071 gotasync = 0;
1072 1317
1073 for (i = asynccnt; i--; ) 1318 for (i = asynccnt; i--; )
1074 if (asyncs [i]->sent) 1319 if (asyncs [i]->sent)
1075 { 1320 {
1076 asyncs [i]->sent = 0; 1321 asyncs [i]->sent = 0;
… …
1084 1329
1085static void 1330static void
1086ev_sighandler (int signum) 1331ev_sighandler (int signum)
1087{ 1332{
1088#if EV_MULTIPLICITY 1333#if EV_MULTIPLICITY
1089 struct ev_loop *loop = &default_loop_struct; 1334 EV_P = signals [signum - 1].loop;
1090#endif 1335#endif
1091 1336
1092#if _WIN32 1337#ifdef _WIN32
1093 signal (signum, ev_sighandler); 1338 signal (signum, ev_sighandler);
1094#endif 1339#endif
1095 1340
1096 signals [signum - 1].gotsig = 1; 1341 signals [signum - 1].pending = 1;
1097 evpipe_write (EV_A_ &gotsig); 1342 evpipe_write (EV_A_ &sig_pending);
1098} 1343}
1099 1344
1100void noinline 1345void noinline
1101ev_feed_signal_event (EV_P_ int signum) 1346ev_feed_signal_event (EV_P_ int signum)
1102{ 1347{
1103 WL w; 1348 WL w;
1104 1349
1350 if (expect_false (signum <= 0 || signum > EV_NSIG))
1351 return;
1352
1353 --signum;
1354
1105#if EV_MULTIPLICITY 1355#if EV_MULTIPLICITY
1106 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1356 /* it is permissible to try to feed a signal to the wrong loop */
1107#endif 1357 /* or, likely more useful, feeding a signal nobody is waiting for */
1108 1358
1109 --signum; 1359 if (expect_false (signals [signum].loop != EV_A))
1110
1111 if (signum < 0 || signum >= signalmax)
1112 return; 1360 return;
1361#endif
1113 1362
1114 signals [signum].gotsig = 0; 1363 signals [signum].pending = 0;
1115 1364
1116 for (w = signals [signum].head; w; w = w->next) 1365 for (w = signals [signum].head; w; w = w->next)
1117 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1118} 1367}
1119 1368
1369#if EV_USE_SIGNALFD
1370static void
1371sigfdcb (EV_P_ ev_io *iow, int revents)
1372{
1373 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1374
1375 for (;;)
1376 {
1377 ssize_t res = read (sigfd, si, sizeof (si));
1378
1379 /* not ISO-C, as res might be -1, but works with SuS */
1380 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1381 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1382
1383 if (res < (ssize_t)sizeof (si))
1384 break;
1385 }
1386}
1387#endif
1388
1389#endif
1390
1120/*****************************************************************************/ 1391/*****************************************************************************/
1121 1392
1393#if EV_CHILD_ENABLE
1122static WL childs [EV_PID_HASHSIZE]; 1394static WL childs [EV_PID_HASHSIZE];
1123
1124#ifndef _WIN32
1125 1395
1126static ev_signal childev; 1396static ev_signal childev;
1127 1397
1128#ifndef WIFCONTINUED 1398#ifndef WIFCONTINUED
1129# define WIFCONTINUED(status) 0 1399# define WIFCONTINUED(status) 0
1130#endif 1400#endif
1131 1401
1132void inline_speed 1402/* handle a single child status event */
1403inline_speed void
1133child_reap (EV_P_ int chain, int pid, int status) 1404child_reap (EV_P_ int chain, int pid, int status)
1134{ 1405{
1135 ev_child *w; 1406 ev_child *w;
1136 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1407 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1137 1408
1138 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1409 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1139 { 1410 {
1140 if ((w->pid == pid || !w->pid) 1411 if ((w->pid == pid || !w->pid)
1141 && (!traced || (w->flags & 1))) 1412 && (!traced || (w->flags & 1)))
1142 { 1413 {
1143 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1414 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1150 1421
1151#ifndef WCONTINUED 1422#ifndef WCONTINUED
1152# define WCONTINUED 0 1423# define WCONTINUED 0
1153#endif 1424#endif
1154 1425
1426/* called on sigchld etc., calls waitpid */
1155static void 1427static void
1156childcb (EV_P_ ev_signal *sw, int revents) 1428childcb (EV_P_ ev_signal *sw, int revents)
1157{ 1429{
1158 int pid, status; 1430 int pid, status;
1159 1431
… …
1167 /* make sure we are called again until all children have been reaped */ 1439 /* make sure we are called again until all children have been reaped */
1168 /* we need to do it this way so that the callback gets called before we continue */ 1440 /* we need to do it this way so that the callback gets called before we continue */
1169 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1441 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1170 1442
1171 child_reap (EV_A_ pid, pid, status); 1443 child_reap (EV_A_ pid, pid, status);
1172 if (EV_PID_HASHSIZE > 1) 1444 if ((EV_PID_HASHSIZE) > 1)
1173 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1445 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1174} 1446}
1175 1447
1176#endif 1448#endif
1177 1449
… …
1240 /* kqueue is borked on everything but netbsd apparently */ 1512 /* kqueue is borked on everything but netbsd apparently */
1241 /* it usually doesn't work correctly on anything but sockets and pipes */ 1513 /* it usually doesn't work correctly on anything but sockets and pipes */
1242 flags &= ~EVBACKEND_KQUEUE; 1514 flags &= ~EVBACKEND_KQUEUE;
1243#endif 1515#endif
1244#ifdef __APPLE__ 1516#ifdef __APPLE__
1245 // flags &= ~EVBACKEND_KQUEUE; for documentation 1517 /* only select works correctly on that "unix-certified" platform */
1246 flags &= ~EVBACKEND_POLL; 1518 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1519 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1520#endif
1521#ifdef __FreeBSD__
1522 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1247#endif 1523#endif
1248 1524
1249 return flags; 1525 return flags;
1250} 1526}
1251 1527
… …
1265ev_backend (EV_P) 1541ev_backend (EV_P)
1266{ 1542{
1267 return backend; 1543 return backend;
1268} 1544}
1269 1545
1546#if EV_FEATURE_API
1270unsigned int 1547unsigned int
1271ev_loop_count (EV_P) 1548ev_iteration (EV_P)
1272{ 1549{
1273 return loop_count; 1550 return loop_count;
1274} 1551}
1275 1552
1553unsigned int
1554ev_depth (EV_P)
1555{
1556 return loop_depth;
1557}
1558
1276void 1559void
1277ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1278{ 1561{
1279 io_blocktime = interval; 1562 io_blocktime = interval;
1280} 1563}
… …
1283ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1567{
1285 timeout_blocktime = interval; 1568 timeout_blocktime = interval;
1286} 1569}
1287 1570
1571void
1572ev_set_userdata (EV_P_ void *data)
1573{
1574 userdata = data;
1575}
1576
1577void *
1578ev_userdata (EV_P)
1579{
1580 return userdata;
1581}
1582
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584{
1585 invoke_cb = invoke_pending_cb;
1586}
1587
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589{
1590 release_cb = release;
1591 acquire_cb = acquire;
1592}
1593#endif
1594
1595/* initialise a loop structure, must be zero-initialised */
1288static void noinline 1596static void noinline
1289loop_init (EV_P_ unsigned int flags) 1597loop_init (EV_P_ unsigned int flags)
1290{ 1598{
1291 if (!backend) 1599 if (!backend)
1292 { 1600 {
1601#if EV_USE_REALTIME
1602 if (!have_realtime)
1603 {
1604 struct timespec ts;
1605
1606 if (!clock_gettime (CLOCK_REALTIME, &ts))
1607 have_realtime = 1;
1608 }
1609#endif
1610
1293#if EV_USE_MONOTONIC 1611#if EV_USE_MONOTONIC
1612 if (!have_monotonic)
1294 { 1613 {
1295 struct timespec ts; 1614 struct timespec ts;
1615
1296 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1616 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1297 have_monotonic = 1; 1617 have_monotonic = 1;
1298 } 1618 }
1299#endif 1619#endif
1620
1621 /* pid check not overridable via env */
1622#ifndef _WIN32
1623 if (flags & EVFLAG_FORKCHECK)
1624 curpid = getpid ();
1625#endif
1626
1627 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS"));
1300 1631
1301 ev_rt_now = ev_time (); 1632 ev_rt_now = ev_time ();
1302 mn_now = get_clock (); 1633 mn_now = get_clock ();
1303 now_floor = mn_now; 1634 now_floor = mn_now;
1304 rtmn_diff = ev_rt_now - mn_now; 1635 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending;
1638#endif
1305 1639
1306 io_blocktime = 0.; 1640 io_blocktime = 0.;
1307 timeout_blocktime = 0.; 1641 timeout_blocktime = 0.;
1308 backend = 0; 1642 backend = 0;
1309 backend_fd = -1; 1643 backend_fd = -1;
1310 gotasync = 0; 1644 sig_pending = 0;
1645#if EV_ASYNC_ENABLE
1646 async_pending = 0;
1647#endif
1311#if EV_USE_INOTIFY 1648#if EV_USE_INOTIFY
1312 fs_fd = -2; 1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1313#endif 1650#endif
1314 1651#if EV_USE_SIGNALFD
1315 /* pid check not overridable via env */ 1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1316#ifndef _WIN32
1317 if (flags & EVFLAG_FORKCHECK)
1318 curpid = getpid ();
1319#endif 1653#endif
1320
1321 if (!(flags & EVFLAG_NOENV)
1322 && !enable_secure ()
1323 && getenv ("LIBEV_FLAGS"))
1324 flags = atoi (getenv ("LIBEV_FLAGS"));
1325 1654
1326 if (!(flags & 0x0000ffffU)) 1655 if (!(flags & 0x0000ffffU))
1327 flags |= ev_recommended_backends (); 1656 flags |= ev_recommended_backends ();
1328 1657
1329#if EV_USE_PORT 1658#if EV_USE_PORT
… …
1340#endif 1669#endif
1341#if EV_USE_SELECT 1670#if EV_USE_SELECT
1342 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1343#endif 1672#endif
1344 1673
1674 ev_prepare_init (&pending_w, pendingcb);
1675
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1345 ev_init (&pipeev, pipecb); 1677 ev_init (&pipe_w, pipecb);
1346 ev_set_priority (&pipeev, EV_MAXPRI); 1678 ev_set_priority (&pipe_w, EV_MAXPRI);
1679#endif
1347 } 1680 }
1348} 1681}
1349 1682
1683/* free up a loop structure */
1350static void noinline 1684static void noinline
1351loop_destroy (EV_P) 1685loop_destroy (EV_P)
1352{ 1686{
1353 int i; 1687 int i;
1354 1688
1355 if (ev_is_active (&pipeev)) 1689 if (ev_is_active (&pipe_w))
1356 { 1690 {
1357 ev_ref (EV_A); /* signal watcher */ 1691 /*ev_ref (EV_A);*/
1358 ev_io_stop (EV_A_ &pipeev); 1692 /*ev_io_stop (EV_A_ &pipe_w);*/
1359 1693
1360#if EV_USE_EVENTFD 1694#if EV_USE_EVENTFD
1361 if (evfd >= 0) 1695 if (evfd >= 0)
1362 close (evfd); 1696 close (evfd);
1363#endif 1697#endif
1364 1698
1365 if (evpipe [0] >= 0) 1699 if (evpipe [0] >= 0)
1366 { 1700 {
1367 close (evpipe [0]); 1701 EV_WIN32_CLOSE_FD (evpipe [0]);
1368 close (evpipe [1]); 1702 EV_WIN32_CLOSE_FD (evpipe [1]);
1369 } 1703 }
1370 } 1704 }
1705
1706#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w))
1708 close (sigfd);
1709#endif
1371 1710
1372#if EV_USE_INOTIFY 1711#if EV_USE_INOTIFY
1373 if (fs_fd >= 0) 1712 if (fs_fd >= 0)
1374 close (fs_fd); 1713 close (fs_fd);
1375#endif 1714#endif
… …
1399#if EV_IDLE_ENABLE 1738#if EV_IDLE_ENABLE
1400 array_free (idle, [i]); 1739 array_free (idle, [i]);
1401#endif 1740#endif
1402 } 1741 }
1403 1742
1404 ev_free (anfds); anfdmax = 0; 1743 ev_free (anfds); anfds = 0; anfdmax = 0;
1405 1744
1406 /* have to use the microsoft-never-gets-it-right macro */ 1745 /* have to use the microsoft-never-gets-it-right macro */
1746 array_free (rfeed, EMPTY);
1407 array_free (fdchange, EMPTY); 1747 array_free (fdchange, EMPTY);
1408 array_free (timer, EMPTY); 1748 array_free (timer, EMPTY);
1409#if EV_PERIODIC_ENABLE 1749#if EV_PERIODIC_ENABLE
1410 array_free (periodic, EMPTY); 1750 array_free (periodic, EMPTY);
1411#endif 1751#endif
… …
1420 1760
1421 backend = 0; 1761 backend = 0;
1422} 1762}
1423 1763
1424#if EV_USE_INOTIFY 1764#if EV_USE_INOTIFY
1425void inline_size infy_fork (EV_P); 1765inline_size void infy_fork (EV_P);
1426#endif 1766#endif
1427 1767
1428void inline_size 1768inline_size void
1429loop_fork (EV_P) 1769loop_fork (EV_P)
1430{ 1770{
1431#if EV_USE_PORT 1771#if EV_USE_PORT
1432 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1433#endif 1773#endif
… …
1439#endif 1779#endif
1440#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1441 infy_fork (EV_A); 1781 infy_fork (EV_A);
1442#endif 1782#endif
1443 1783
1444 if (ev_is_active (&pipeev)) 1784 if (ev_is_active (&pipe_w))
1445 { 1785 {
1446 /* this "locks" the handlers against writing to the pipe */ 1786 /* this "locks" the handlers against writing to the pipe */
1447 /* while we modify the fd vars */ 1787 /* while we modify the fd vars */
1448 gotsig = 1; 1788 sig_pending = 1;
1449#if EV_ASYNC_ENABLE 1789#if EV_ASYNC_ENABLE
1450 gotasync = 1; 1790 async_pending = 1;
1451#endif 1791#endif
1452 1792
1453 ev_ref (EV_A); 1793 ev_ref (EV_A);
1454 ev_io_stop (EV_A_ &pipeev); 1794 ev_io_stop (EV_A_ &pipe_w);
1455 1795
1456#if EV_USE_EVENTFD 1796#if EV_USE_EVENTFD
1457 if (evfd >= 0) 1797 if (evfd >= 0)
1458 close (evfd); 1798 close (evfd);
1459#endif 1799#endif
1460 1800
1461 if (evpipe [0] >= 0) 1801 if (evpipe [0] >= 0)
1462 { 1802 {
1463 close (evpipe [0]); 1803 EV_WIN32_CLOSE_FD (evpipe [0]);
1464 close (evpipe [1]); 1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1465 } 1805 }
1466 1806
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1467 evpipe_init (EV_A); 1808 evpipe_init (EV_A);
1468 /* now iterate over everything, in case we missed something */ 1809 /* now iterate over everything, in case we missed something */
1469 pipecb (EV_A_ &pipeev, EV_READ); 1810 pipecb (EV_A_ &pipe_w, EV_READ);
1811#endif
1470 } 1812 }
1471 1813
1472 postfork = 0; 1814 postfork = 0;
1473} 1815}
1474 1816
1475#if EV_MULTIPLICITY 1817#if EV_MULTIPLICITY
1476 1818
1477struct ev_loop * 1819struct ev_loop *
1478ev_loop_new (unsigned int flags) 1820ev_loop_new (unsigned int flags)
1479{ 1821{
1480 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1481 1823
1482 memset (loop, 0, sizeof (struct ev_loop)); 1824 memset (EV_A, 0, sizeof (struct ev_loop));
1483
1484 loop_init (EV_A_ flags); 1825 loop_init (EV_A_ flags);
1485 1826
1486 if (ev_backend (EV_A)) 1827 if (ev_backend (EV_A))
1487 return loop; 1828 return EV_A;
1488 1829
1489 return 0; 1830 return 0;
1490} 1831}
1491 1832
1492void 1833void
… …
1499void 1840void
1500ev_loop_fork (EV_P) 1841ev_loop_fork (EV_P)
1501{ 1842{
1502 postfork = 1; /* must be in line with ev_default_fork */ 1843 postfork = 1; /* must be in line with ev_default_fork */
1503} 1844}
1845#endif /* multiplicity */
1504 1846
1505#if EV_VERIFY 1847#if EV_VERIFY
1506static void noinline 1848static void noinline
1507verify_watcher (EV_P_ W w) 1849verify_watcher (EV_P_ W w)
1508{ 1850{
1509 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1510 1852
1511 if (w->pending) 1853 if (w->pending)
1512 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1513} 1855}
1514 1856
1515static void noinline 1857static void noinline
1516verify_heap (EV_P_ ANHE *heap, int N) 1858verify_heap (EV_P_ ANHE *heap, int N)
1517{ 1859{
1518 int i; 1860 int i;
1519 1861
1520 for (i = HEAP0; i < N + HEAP0; ++i) 1862 for (i = HEAP0; i < N + HEAP0; ++i)
1521 { 1863 {
1522 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1864 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1523 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1865 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1524 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1866 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1525 1867
1526 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1527 } 1869 }
1528} 1870}
1529 1871
1530static void noinline 1872static void noinline
1531array_verify (EV_P_ W *ws, int cnt) 1873array_verify (EV_P_ W *ws, int cnt)
1532{ 1874{
1533 while (cnt--) 1875 while (cnt--)
1534 { 1876 {
1535 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1536 verify_watcher (EV_A_ ws [cnt]); 1878 verify_watcher (EV_A_ ws [cnt]);
1537 } 1879 }
1538} 1880}
1539#endif 1881#endif
1540 1882
1883#if EV_FEATURE_API
1541void 1884void
1542ev_loop_verify (EV_P) 1885ev_verify (EV_P)
1543{ 1886{
1544#if EV_VERIFY 1887#if EV_VERIFY
1545 int i; 1888 int i;
1546 WL w; 1889 WL w;
1547 1890
1548 assert (activecnt >= -1); 1891 assert (activecnt >= -1);
1549 1892
1550 assert (fdchangemax >= fdchangecnt); 1893 assert (fdchangemax >= fdchangecnt);
1551 for (i = 0; i < fdchangecnt; ++i) 1894 for (i = 0; i < fdchangecnt; ++i)
1552 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1553 1896
1554 assert (anfdmax >= 0); 1897 assert (anfdmax >= 0);
1555 for (i = 0; i < anfdmax; ++i) 1898 for (i = 0; i < anfdmax; ++i)
1556 for (w = anfds [i].head; w; w = w->next) 1899 for (w = anfds [i].head; w; w = w->next)
1557 { 1900 {
1558 verify_watcher (EV_A_ (W)w); 1901 verify_watcher (EV_A_ (W)w);
1559 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1560 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1561 } 1904 }
1562 1905
1563 assert (timermax >= timercnt); 1906 assert (timermax >= timercnt);
1564 verify_heap (EV_A_ timers, timercnt); 1907 verify_heap (EV_A_ timers, timercnt);
1565 1908
… …
1586#if EV_ASYNC_ENABLE 1929#if EV_ASYNC_ENABLE
1587 assert (asyncmax >= asynccnt); 1930 assert (asyncmax >= asynccnt);
1588 array_verify (EV_A_ (W *)asyncs, asynccnt); 1931 array_verify (EV_A_ (W *)asyncs, asynccnt);
1589#endif 1932#endif
1590 1933
1934#if EV_PREPARE_ENABLE
1591 assert (preparemax >= preparecnt); 1935 assert (preparemax >= preparecnt);
1592 array_verify (EV_A_ (W *)prepares, preparecnt); 1936 array_verify (EV_A_ (W *)prepares, preparecnt);
1937#endif
1593 1938
1939#if EV_CHECK_ENABLE
1594 assert (checkmax >= checkcnt); 1940 assert (checkmax >= checkcnt);
1595 array_verify (EV_A_ (W *)checks, checkcnt); 1941 array_verify (EV_A_ (W *)checks, checkcnt);
1942#endif
1596 1943
1597# if 0 1944# if 0
1945#if EV_CHILD_ENABLE
1598 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1946 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1599 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1947 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1600# endif 1948#endif
1601#endif 1949# endif
1950#endif
1602} 1951}
1603 1952#endif
1604#endif /* multiplicity */
1605 1953
1606#if EV_MULTIPLICITY 1954#if EV_MULTIPLICITY
1607struct ev_loop * 1955struct ev_loop *
1608ev_default_loop_init (unsigned int flags) 1956ev_default_loop_init (unsigned int flags)
1609#else 1957#else
… …
1612#endif 1960#endif
1613{ 1961{
1614 if (!ev_default_loop_ptr) 1962 if (!ev_default_loop_ptr)
1615 { 1963 {
1616#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1617 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1965 EV_P = ev_default_loop_ptr = &default_loop_struct;
1618#else 1966#else
1619 ev_default_loop_ptr = 1; 1967 ev_default_loop_ptr = 1;
1620#endif 1968#endif
1621 1969
1622 loop_init (EV_A_ flags); 1970 loop_init (EV_A_ flags);
1623 1971
1624 if (ev_backend (EV_A)) 1972 if (ev_backend (EV_A))
1625 { 1973 {
1626#ifndef _WIN32 1974#if EV_CHILD_ENABLE
1627 ev_signal_init (&childev, childcb, SIGCHLD); 1975 ev_signal_init (&childev, childcb, SIGCHLD);
1628 ev_set_priority (&childev, EV_MAXPRI); 1976 ev_set_priority (&childev, EV_MAXPRI);
1629 ev_signal_start (EV_A_ &childev); 1977 ev_signal_start (EV_A_ &childev);
1630 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1978 ev_unref (EV_A); /* child watcher should not keep loop alive */
1631#endif 1979#endif
… …
1639 1987
1640void 1988void
1641ev_default_destroy (void) 1989ev_default_destroy (void)
1642{ 1990{
1643#if EV_MULTIPLICITY 1991#if EV_MULTIPLICITY
1644 struct ev_loop *loop = ev_default_loop_ptr; 1992 EV_P = ev_default_loop_ptr;
1645#endif 1993#endif
1646 1994
1647 ev_default_loop_ptr = 0; 1995 ev_default_loop_ptr = 0;
1648 1996
1649#ifndef _WIN32 1997#if EV_CHILD_ENABLE
1650 ev_ref (EV_A); /* child watcher */ 1998 ev_ref (EV_A); /* child watcher */
1651 ev_signal_stop (EV_A_ &childev); 1999 ev_signal_stop (EV_A_ &childev);
1652#endif 2000#endif
1653 2001
1654 loop_destroy (EV_A); 2002 loop_destroy (EV_A);
… …
1656 2004
1657void 2005void
1658ev_default_fork (void) 2006ev_default_fork (void)
1659{ 2007{
1660#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
1661 struct ev_loop *loop = ev_default_loop_ptr; 2009 EV_P = ev_default_loop_ptr;
1662#endif 2010#endif
1663 2011
1664 ev_loop_fork (EV_A); 2012 postfork = 1; /* must be in line with ev_loop_fork */
1665} 2013}
1666 2014
1667/*****************************************************************************/ 2015/*****************************************************************************/
1668 2016
1669void 2017void
1670ev_invoke (EV_P_ void *w, int revents) 2018ev_invoke (EV_P_ void *w, int revents)
1671{ 2019{
1672 EV_CB_INVOKE ((W)w, revents); 2020 EV_CB_INVOKE ((W)w, revents);
1673} 2021}
1674 2022
1675void inline_speed 2023unsigned int
1676call_pending (EV_P) 2024ev_pending_count (EV_P)
2025{
2026 int pri;
2027 unsigned int count = 0;
2028
2029 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri];
2031
2032 return count;
2033}
2034
2035void noinline
2036ev_invoke_pending (EV_P)
1677{ 2037{
1678 int pri; 2038 int pri;
1679 2039
1680 for (pri = NUMPRI; pri--; ) 2040 for (pri = NUMPRI; pri--; )
1681 while (pendingcnt [pri]) 2041 while (pendingcnt [pri])
1682 { 2042 {
1683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1684 2044
1685 if (expect_true (p->w))
1686 {
1687 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
1688 2047
1689 p->w->pending = 0; 2048 p->w->pending = 0;
1690 EV_CB_INVOKE (p->w, p->events); 2049 EV_CB_INVOKE (p->w, p->events);
1691 EV_FREQUENT_CHECK; 2050 EV_FREQUENT_CHECK;
1692 }
1693 } 2051 }
1694} 2052}
1695 2053
1696#if EV_IDLE_ENABLE 2054#if EV_IDLE_ENABLE
1697void inline_size 2055/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */
2057inline_size void
1698idle_reify (EV_P) 2058idle_reify (EV_P)
1699{ 2059{
1700 if (expect_false (idleall)) 2060 if (expect_false (idleall))
1701 { 2061 {
1702 int pri; 2062 int pri;
… …
1714 } 2074 }
1715 } 2075 }
1716} 2076}
1717#endif 2077#endif
1718 2078
1719void inline_size 2079/* make timers pending */
2080inline_size void
1720timers_reify (EV_P) 2081timers_reify (EV_P)
1721{ 2082{
1722 EV_FREQUENT_CHECK; 2083 EV_FREQUENT_CHECK;
1723 2084
1724 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2085 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1725 { 2086 {
1726 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2087 do
1727
1728 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1729
1730 /* first reschedule or stop timer */
1731 if (w->repeat)
1732 { 2088 {
2089 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2090
2091 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2092
2093 /* first reschedule or stop timer */
2094 if (w->repeat)
2095 {
1733 ev_at (w) += w->repeat; 2096 ev_at (w) += w->repeat;
1734 if (ev_at (w) < mn_now) 2097 if (ev_at (w) < mn_now)
1735 ev_at (w) = mn_now; 2098 ev_at (w) = mn_now;
1736 2099
1737 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2100 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1738 2101
1739 ANHE_at_cache (timers [HEAP0]); 2102 ANHE_at_cache (timers [HEAP0]);
1740 downheap (timers, timercnt, HEAP0); 2103 downheap (timers, timercnt, HEAP0);
2104 }
2105 else
2106 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2107
2108 EV_FREQUENT_CHECK;
2109 feed_reverse (EV_A_ (W)w);
1741 } 2110 }
1742 else 2111 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1743 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1744 2112
1745 EV_FREQUENT_CHECK; 2113 feed_reverse_done (EV_A_ EV_TIMER);
1746 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1747 } 2114 }
1748} 2115}
1749 2116
1750#if EV_PERIODIC_ENABLE 2117#if EV_PERIODIC_ENABLE
1751void inline_size 2118/* make periodics pending */
2119inline_size void
1752periodics_reify (EV_P) 2120periodics_reify (EV_P)
1753{ 2121{
1754 EV_FREQUENT_CHECK; 2122 EV_FREQUENT_CHECK;
1755 2123
1756 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1757 { 2125 {
1758 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2126 int feed_count = 0;
1759 2127
1760 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2128 do
1761
1762 /* first reschedule or stop timer */
1763 if (w->reschedule_cb)
1764 { 2129 {
2130 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2131
2132 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2133
2134 /* first reschedule or stop timer */
2135 if (w->reschedule_cb)
2136 {
1765 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2137 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1766 2138
1767 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2139 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1768 2140
1769 ANHE_at_cache (periodics [HEAP0]); 2141 ANHE_at_cache (periodics [HEAP0]);
1770 downheap (periodics, periodiccnt, HEAP0); 2142 downheap (periodics, periodiccnt, HEAP0);
2143 }
2144 else if (w->interval)
2145 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0);
2162 }
2163 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2165
2166 EV_FREQUENT_CHECK;
2167 feed_reverse (EV_A_ (W)w);
1771 } 2168 }
1772 else if (w->interval) 2169 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1773 {
1774 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1775 /* if next trigger time is not sufficiently in the future, put it there */
1776 /* this might happen because of floating point inexactness */
1777 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1778 {
1779 ev_at (w) += w->interval;
1780 2170
1781 /* if interval is unreasonably low we might still have a time in the past */
1782 /* so correct this. this will make the periodic very inexact, but the user */
1783 /* has effectively asked to get triggered more often than possible */
1784 if (ev_at (w) < ev_rt_now)
1785 ev_at (w) = ev_rt_now;
1786 }
1787
1788 ANHE_at_cache (periodics [HEAP0]);
1789 downheap (periodics, periodiccnt, HEAP0);
1790 }
1791 else
1792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1793
1794 EV_FREQUENT_CHECK;
1795 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2171 feed_reverse_done (EV_A_ EV_PERIODIC);
1796 } 2172 }
1797} 2173}
1798 2174
2175/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1799static void noinline 2177static void noinline
1800periodics_reschedule (EV_P) 2178periodics_reschedule (EV_P)
1801{ 2179{
1802 int i; 2180 int i;
1803 2181
… …
1816 2194
1817 reheap (periodics, periodiccnt); 2195 reheap (periodics, periodiccnt);
1818} 2196}
1819#endif 2197#endif
1820 2198
1821void inline_speed 2199/* adjust all timers by a given offset */
2200static void noinline
2201timers_reschedule (EV_P_ ev_tstamp adjust)
2202{
2203 int i;
2204
2205 for (i = 0; i < timercnt; ++i)
2206 {
2207 ANHE *he = timers + i + HEAP0;
2208 ANHE_w (*he)->at += adjust;
2209 ANHE_at_cache (*he);
2210 }
2211}
2212
2213/* fetch new monotonic and realtime times from the kernel */
2214/* also detect if there was a timejump, and act accordingly */
2215inline_speed void
1822time_update (EV_P_ ev_tstamp max_block) 2216time_update (EV_P_ ev_tstamp max_block)
1823{ 2217{
1824 int i;
1825
1826#if EV_USE_MONOTONIC 2218#if EV_USE_MONOTONIC
1827 if (expect_true (have_monotonic)) 2219 if (expect_true (have_monotonic))
1828 { 2220 {
2221 int i;
1829 ev_tstamp odiff = rtmn_diff; 2222 ev_tstamp odiff = rtmn_diff;
1830 2223
1831 mn_now = get_clock (); 2224 mn_now = get_clock ();
1832 2225
1833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1859 ev_rt_now = ev_time (); 2252 ev_rt_now = ev_time ();
1860 mn_now = get_clock (); 2253 mn_now = get_clock ();
1861 now_floor = mn_now; 2254 now_floor = mn_now;
1862 } 2255 }
1863 2256
2257 /* no timer adjustment, as the monotonic clock doesn't jump */
2258 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864# if EV_PERIODIC_ENABLE 2259# if EV_PERIODIC_ENABLE
1865 periodics_reschedule (EV_A); 2260 periodics_reschedule (EV_A);
1866# endif 2261# endif
1867 /* no timer adjustment, as the monotonic clock doesn't jump */
1868 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869 } 2262 }
1870 else 2263 else
1871#endif 2264#endif
1872 { 2265 {
1873 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1874 2267
1875 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2268 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1876 { 2269 {
2270 /* adjust timers. this is easy, as the offset is the same for all of them */
2271 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1877#if EV_PERIODIC_ENABLE 2272#if EV_PERIODIC_ENABLE
1878 periodics_reschedule (EV_A); 2273 periodics_reschedule (EV_A);
1879#endif 2274#endif
1880 /* adjust timers. this is easy, as the offset is the same for all of them */
1881 for (i = 0; i < timercnt; ++i)
1882 {
1883 ANHE *he = timers + i + HEAP0;
1884 ANHE_w (*he)->at += ev_rt_now - mn_now;
1885 ANHE_at_cache (*he);
1886 }
1887 } 2275 }
1888 2276
1889 mn_now = ev_rt_now; 2277 mn_now = ev_rt_now;
1890 } 2278 }
1891} 2279}
1892 2280
1893void 2281void
1894ev_ref (EV_P)
1895{
1896 ++activecnt;
1897}
1898
1899void
1900ev_unref (EV_P)
1901{
1902 --activecnt;
1903}
1904
1905void
1906ev_now_update (EV_P)
1907{
1908 time_update (EV_A_ 1e100);
1909}
1910
1911static int loop_done;
1912
1913void
1914ev_loop (EV_P_ int flags) 2282ev_loop (EV_P_ int flags)
1915{ 2283{
2284#if EV_FEATURE_API
2285 ++loop_depth;
2286#endif
2287
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2289
1916 loop_done = EVUNLOOP_CANCEL; 2290 loop_done = EVUNLOOP_CANCEL;
1917 2291
1918 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1919 2293
1920 do 2294 do
1921 { 2295 {
1922#if EV_VERIFY >= 2 2296#if EV_VERIFY >= 2
1923 ev_loop_verify (EV_A); 2297 ev_verify (EV_A);
1924#endif 2298#endif
1925 2299
1926#ifndef _WIN32 2300#ifndef _WIN32
1927 if (expect_false (curpid)) /* penalise the forking check even more */ 2301 if (expect_false (curpid)) /* penalise the forking check even more */
1928 if (expect_false (getpid () != curpid)) 2302 if (expect_false (getpid () != curpid))
… …
1936 /* we might have forked, so queue fork handlers */ 2310 /* we might have forked, so queue fork handlers */
1937 if (expect_false (postfork)) 2311 if (expect_false (postfork))
1938 if (forkcnt) 2312 if (forkcnt)
1939 { 2313 {
1940 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1941 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
1942 } 2316 }
1943#endif 2317#endif
1944 2318
2319#if EV_PREPARE_ENABLE
1945 /* queue prepare watchers (and execute them) */ 2320 /* queue prepare watchers (and execute them) */
1946 if (expect_false (preparecnt)) 2321 if (expect_false (preparecnt))
1947 { 2322 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 2324 EV_INVOKE_PENDING;
1950 } 2325 }
2326#endif
1951 2327
1952 if (expect_false (!activecnt)) 2328 if (expect_false (loop_done))
1953 break; 2329 break;
1954 2330
1955 /* we might have forked, so reify kernel state if necessary */ 2331 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 2332 if (expect_false (postfork))
1957 loop_fork (EV_A); 2333 loop_fork (EV_A);
… …
1964 ev_tstamp waittime = 0.; 2340 ev_tstamp waittime = 0.;
1965 ev_tstamp sleeptime = 0.; 2341 ev_tstamp sleeptime = 0.;
1966 2342
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1968 { 2344 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
1969 /* update time to cancel out callback processing overhead */ 2348 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100); 2349 time_update (EV_A_ 1e100);
1971 2350
1972 waittime = MAX_BLOCKTIME; 2351 waittime = MAX_BLOCKTIME;
1973 2352
… …
1983 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1984 if (waittime > to) waittime = to; 2363 if (waittime > to) waittime = to;
1985 } 2364 }
1986#endif 2365#endif
1987 2366
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */
1988 if (expect_false (waittime < timeout_blocktime)) 2368 if (expect_false (waittime < timeout_blocktime))
1989 waittime = timeout_blocktime; 2369 waittime = timeout_blocktime;
1990 2370
1991 sleeptime = waittime - backend_fudge; 2371 /* extra check because io_blocktime is commonly 0 */
1992
1993 if (expect_true (sleeptime > io_blocktime)) 2372 if (expect_false (io_blocktime))
1994 sleeptime = io_blocktime;
1995
1996 if (sleeptime)
1997 { 2373 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375
2376 if (sleeptime > waittime - backend_fudge)
2377 sleeptime = waittime - backend_fudge;
2378
2379 if (expect_true (sleeptime > 0.))
2380 {
1998 ev_sleep (sleeptime); 2381 ev_sleep (sleeptime);
1999 waittime -= sleeptime; 2382 waittime -= sleeptime;
2383 }
2000 } 2384 }
2001 } 2385 }
2002 2386
2387#if EV_FEATURE_API
2003 ++loop_count; 2388 ++loop_count;
2389#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2004 backend_poll (EV_A_ waittime); 2391 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2005 2393
2006 /* update ev_rt_now, do magic */ 2394 /* update ev_rt_now, do magic */
2007 time_update (EV_A_ waittime + sleeptime); 2395 time_update (EV_A_ waittime + sleeptime);
2008 } 2396 }
2009 2397
… …
2016#if EV_IDLE_ENABLE 2404#if EV_IDLE_ENABLE
2017 /* queue idle watchers unless other events are pending */ 2405 /* queue idle watchers unless other events are pending */
2018 idle_reify (EV_A); 2406 idle_reify (EV_A);
2019#endif 2407#endif
2020 2408
2409#if EV_CHECK_ENABLE
2021 /* queue check watchers, to be executed first */ 2410 /* queue check watchers, to be executed first */
2022 if (expect_false (checkcnt)) 2411 if (expect_false (checkcnt))
2023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif
2024 2414
2025 call_pending (EV_A); 2415 EV_INVOKE_PENDING;
2026 } 2416 }
2027 while (expect_true ( 2417 while (expect_true (
2028 activecnt 2418 activecnt
2029 && !loop_done 2419 && !loop_done
2030 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2031 )); 2421 ));
2032 2422
2033 if (loop_done == EVUNLOOP_ONE) 2423 if (loop_done == EVUNLOOP_ONE)
2034 loop_done = EVUNLOOP_CANCEL; 2424 loop_done = EVUNLOOP_CANCEL;
2425
2426#if EV_FEATURE_API
2427 --loop_depth;
2428#endif
2035} 2429}
2036 2430
2037void 2431void
2038ev_unloop (EV_P_ int how) 2432ev_unloop (EV_P_ int how)
2039{ 2433{
2040 loop_done = how; 2434 loop_done = how;
2041} 2435}
2042 2436
2437void
2438ev_ref (EV_P)
2439{
2440 ++activecnt;
2441}
2442
2443void
2444ev_unref (EV_P)
2445{
2446 --activecnt;
2447}
2448
2449void
2450ev_now_update (EV_P)
2451{
2452 time_update (EV_A_ 1e100);
2453}
2454
2455void
2456ev_suspend (EV_P)
2457{
2458 ev_now_update (EV_A);
2459}
2460
2461void
2462ev_resume (EV_P)
2463{
2464 ev_tstamp mn_prev = mn_now;
2465
2466 ev_now_update (EV_A);
2467 timers_reschedule (EV_A_ mn_now - mn_prev);
2468#if EV_PERIODIC_ENABLE
2469 /* TODO: really do this? */
2470 periodics_reschedule (EV_A);
2471#endif
2472}
2473
2043/*****************************************************************************/ 2474/*****************************************************************************/
2475/* singly-linked list management, used when the expected list length is short */
2044 2476
2045void inline_size 2477inline_size void
2046wlist_add (WL *head, WL elem) 2478wlist_add (WL *head, WL elem)
2047{ 2479{
2048 elem->next = *head; 2480 elem->next = *head;
2049 *head = elem; 2481 *head = elem;
2050} 2482}
2051 2483
2052void inline_size 2484inline_size void
2053wlist_del (WL *head, WL elem) 2485wlist_del (WL *head, WL elem)
2054{ 2486{
2055 while (*head) 2487 while (*head)
2056 { 2488 {
2057 if (*head == elem) 2489 if (expect_true (*head == elem))
2058 { 2490 {
2059 *head = elem->next; 2491 *head = elem->next;
2060 return; 2492 break;
2061 } 2493 }
2062 2494
2063 head = &(*head)->next; 2495 head = &(*head)->next;
2064 } 2496 }
2065} 2497}
2066 2498
2067void inline_speed 2499/* internal, faster, version of ev_clear_pending */
2500inline_speed void
2068clear_pending (EV_P_ W w) 2501clear_pending (EV_P_ W w)
2069{ 2502{
2070 if (w->pending) 2503 if (w->pending)
2071 { 2504 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2505 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2073 w->pending = 0; 2506 w->pending = 0;
2074 } 2507 }
2075} 2508}
2076 2509
2077int 2510int
… …
2081 int pending = w_->pending; 2514 int pending = w_->pending;
2082 2515
2083 if (expect_true (pending)) 2516 if (expect_true (pending))
2084 { 2517 {
2085 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w;
2086 w_->pending = 0; 2520 w_->pending = 0;
2087 p->w = 0;
2088 return p->events; 2521 return p->events;
2089 } 2522 }
2090 else 2523 else
2091 return 0; 2524 return 0;
2092} 2525}
2093 2526
2094void inline_size 2527inline_size void
2095pri_adjust (EV_P_ W w) 2528pri_adjust (EV_P_ W w)
2096{ 2529{
2097 int pri = w->priority; 2530 int pri = ev_priority (w);
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2531 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2532 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 2533 ev_set_priority (w, pri);
2101} 2534}
2102 2535
2103void inline_speed 2536inline_speed void
2104ev_start (EV_P_ W w, int active) 2537ev_start (EV_P_ W w, int active)
2105{ 2538{
2106 pri_adjust (EV_A_ w); 2539 pri_adjust (EV_A_ w);
2107 w->active = active; 2540 w->active = active;
2108 ev_ref (EV_A); 2541 ev_ref (EV_A);
2109} 2542}
2110 2543
2111void inline_size 2544inline_size void
2112ev_stop (EV_P_ W w) 2545ev_stop (EV_P_ W w)
2113{ 2546{
2114 ev_unref (EV_A); 2547 ev_unref (EV_A);
2115 w->active = 0; 2548 w->active = 0;
2116} 2549}
… …
2123 int fd = w->fd; 2556 int fd = w->fd;
2124 2557
2125 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
2126 return; 2559 return;
2127 2560
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 2561 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2129 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2130 2563
2131 EV_FREQUENT_CHECK; 2564 EV_FREQUENT_CHECK;
2132 2565
2133 ev_start (EV_A_ (W)w, 1); 2566 ev_start (EV_A_ (W)w, 1);
2134 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2135 wlist_add (&anfds[fd].head, (WL)w); 2568 wlist_add (&anfds[fd].head, (WL)w);
2136 2569
2137 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2138 w->events &= ~EV_IOFDSET; 2571 w->events &= ~EV__IOFDSET;
2139 2572
2140 EV_FREQUENT_CHECK; 2573 EV_FREQUENT_CHECK;
2141} 2574}
2142 2575
2143void noinline 2576void noinline
… …
2145{ 2578{
2146 clear_pending (EV_A_ (W)w); 2579 clear_pending (EV_A_ (W)w);
2147 if (expect_false (!ev_is_active (w))) 2580 if (expect_false (!ev_is_active (w)))
2148 return; 2581 return;
2149 2582
2150 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2583 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2151 2584
2152 EV_FREQUENT_CHECK; 2585 EV_FREQUENT_CHECK;
2153 2586
2154 wlist_del (&anfds[w->fd].head, (WL)w); 2587 wlist_del (&anfds[w->fd].head, (WL)w);
2155 ev_stop (EV_A_ (W)w); 2588 ev_stop (EV_A_ (W)w);
… …
2165 if (expect_false (ev_is_active (w))) 2598 if (expect_false (ev_is_active (w)))
2166 return; 2599 return;
2167 2600
2168 ev_at (w) += mn_now; 2601 ev_at (w) += mn_now;
2169 2602
2170 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2603 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2171 2604
2172 EV_FREQUENT_CHECK; 2605 EV_FREQUENT_CHECK;
2173 2606
2174 ++timercnt; 2607 ++timercnt;
2175 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2178 ANHE_at_cache (timers [ev_active (w)]); 2611 ANHE_at_cache (timers [ev_active (w)]);
2179 upheap (timers, ev_active (w)); 2612 upheap (timers, ev_active (w));
2180 2613
2181 EV_FREQUENT_CHECK; 2614 EV_FREQUENT_CHECK;
2182 2615
2183 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2184} 2617}
2185 2618
2186void noinline 2619void noinline
2187ev_timer_stop (EV_P_ ev_timer *w) 2620ev_timer_stop (EV_P_ ev_timer *w)
2188{ 2621{
… …
2193 EV_FREQUENT_CHECK; 2626 EV_FREQUENT_CHECK;
2194 2627
2195 { 2628 {
2196 int active = ev_active (w); 2629 int active = ev_active (w);
2197 2630
2198 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2199 2632
2200 --timercnt; 2633 --timercnt;
2201 2634
2202 if (expect_true (active < timercnt + HEAP0)) 2635 if (expect_true (active < timercnt + HEAP0))
2203 { 2636 {
2204 timers [active] = timers [timercnt + HEAP0]; 2637 timers [active] = timers [timercnt + HEAP0];
2205 adjustheap (timers, timercnt, active); 2638 adjustheap (timers, timercnt, active);
2206 } 2639 }
2207 } 2640 }
2208 2641
2209 EV_FREQUENT_CHECK;
2210
2211 ev_at (w) -= mn_now; 2642 ev_at (w) -= mn_now;
2212 2643
2213 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
2645
2646 EV_FREQUENT_CHECK;
2214} 2647}
2215 2648
2216void noinline 2649void noinline
2217ev_timer_again (EV_P_ ev_timer *w) 2650ev_timer_again (EV_P_ ev_timer *w)
2218{ 2651{
… …
2236 } 2669 }
2237 2670
2238 EV_FREQUENT_CHECK; 2671 EV_FREQUENT_CHECK;
2239} 2672}
2240 2673
2674ev_tstamp
2675ev_timer_remaining (EV_P_ ev_timer *w)
2676{
2677 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2678}
2679
2241#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
2242void noinline 2681void noinline
2243ev_periodic_start (EV_P_ ev_periodic *w) 2682ev_periodic_start (EV_P_ ev_periodic *w)
2244{ 2683{
2245 if (expect_false (ev_is_active (w))) 2684 if (expect_false (ev_is_active (w)))
… …
2247 2686
2248 if (w->reschedule_cb) 2687 if (w->reschedule_cb)
2249 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2250 else if (w->interval) 2689 else if (w->interval)
2251 { 2690 {
2252 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2253 /* this formula differs from the one in periodic_reify because we do not always round up */ 2692 /* this formula differs from the one in periodic_reify because we do not always round up */
2254 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2255 } 2694 }
2256 else 2695 else
2257 ev_at (w) = w->offset; 2696 ev_at (w) = w->offset;
… …
2265 ANHE_at_cache (periodics [ev_active (w)]); 2704 ANHE_at_cache (periodics [ev_active (w)]);
2266 upheap (periodics, ev_active (w)); 2705 upheap (periodics, ev_active (w));
2267 2706
2268 EV_FREQUENT_CHECK; 2707 EV_FREQUENT_CHECK;
2269 2708
2270 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2709 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2271} 2710}
2272 2711
2273void noinline 2712void noinline
2274ev_periodic_stop (EV_P_ ev_periodic *w) 2713ev_periodic_stop (EV_P_ ev_periodic *w)
2275{ 2714{
… …
2280 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2281 2720
2282 { 2721 {
2283 int active = ev_active (w); 2722 int active = ev_active (w);
2284 2723
2285 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2286 2725
2287 --periodiccnt; 2726 --periodiccnt;
2288 2727
2289 if (expect_true (active < periodiccnt + HEAP0)) 2728 if (expect_true (active < periodiccnt + HEAP0))
2290 { 2729 {
2291 periodics [active] = periodics [periodiccnt + HEAP0]; 2730 periodics [active] = periodics [periodiccnt + HEAP0];
2292 adjustheap (periodics, periodiccnt, active); 2731 adjustheap (periodics, periodiccnt, active);
2293 } 2732 }
2294 } 2733 }
2295 2734
2296 EV_FREQUENT_CHECK;
2297
2298 ev_stop (EV_A_ (W)w); 2735 ev_stop (EV_A_ (W)w);
2736
2737 EV_FREQUENT_CHECK;
2299} 2738}
2300 2739
2301void noinline 2740void noinline
2302ev_periodic_again (EV_P_ ev_periodic *w) 2741ev_periodic_again (EV_P_ ev_periodic *w)
2303{ 2742{
… …
2309 2748
2310#ifndef SA_RESTART 2749#ifndef SA_RESTART
2311# define SA_RESTART 0 2750# define SA_RESTART 0
2312#endif 2751#endif
2313 2752
2753#if EV_SIGNAL_ENABLE
2754
2314void noinline 2755void noinline
2315ev_signal_start (EV_P_ ev_signal *w) 2756ev_signal_start (EV_P_ ev_signal *w)
2316{ 2757{
2317#if EV_MULTIPLICITY
2318 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2319#endif
2320 if (expect_false (ev_is_active (w))) 2758 if (expect_false (ev_is_active (w)))
2321 return; 2759 return;
2322 2760
2323 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2761 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2324 2762
2325 evpipe_init (EV_A); 2763#if EV_MULTIPLICITY
2764 assert (("libev: a signal must not be attached to two different loops",
2765 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2326 2766
2327 EV_FREQUENT_CHECK; 2767 signals [w->signum - 1].loop = EV_A;
2768#endif
2328 2769
2770 EV_FREQUENT_CHECK;
2771
2772#if EV_USE_SIGNALFD
2773 if (sigfd == -2)
2329 { 2774 {
2330#ifndef _WIN32 2775 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2331 sigset_t full, prev; 2776 if (sigfd < 0 && errno == EINVAL)
2332 sigfillset (&full); 2777 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2333 sigprocmask (SIG_SETMASK, &full, &prev);
2334#endif
2335 2778
2336 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2779 if (sigfd >= 0)
2780 {
2781 fd_intern (sigfd); /* doing it twice will not hurt */
2337 2782
2338#ifndef _WIN32 2783 sigemptyset (&sigfd_set);
2339 sigprocmask (SIG_SETMASK, &prev, 0); 2784
2340#endif 2785 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2786 ev_set_priority (&sigfd_w, EV_MAXPRI);
2787 ev_io_start (EV_A_ &sigfd_w);
2788 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2789 }
2341 } 2790 }
2791
2792 if (sigfd >= 0)
2793 {
2794 /* TODO: check .head */
2795 sigaddset (&sigfd_set, w->signum);
2796 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2797
2798 signalfd (sigfd, &sigfd_set, 0);
2799 }
2800#endif
2342 2801
2343 ev_start (EV_A_ (W)w, 1); 2802 ev_start (EV_A_ (W)w, 1);
2344 wlist_add (&signals [w->signum - 1].head, (WL)w); 2803 wlist_add (&signals [w->signum - 1].head, (WL)w);
2345 2804
2346 if (!((WL)w)->next) 2805 if (!((WL)w)->next)
2806# if EV_USE_SIGNALFD
2807 if (sigfd < 0) /*TODO*/
2808# endif
2347 { 2809 {
2348#if _WIN32 2810# ifdef _WIN32
2811 evpipe_init (EV_A);
2812
2349 signal (w->signum, ev_sighandler); 2813 signal (w->signum, ev_sighandler);
2350#else 2814# else
2351 struct sigaction sa; 2815 struct sigaction sa;
2816
2817 evpipe_init (EV_A);
2818
2352 sa.sa_handler = ev_sighandler; 2819 sa.sa_handler = ev_sighandler;
2353 sigfillset (&sa.sa_mask); 2820 sigfillset (&sa.sa_mask);
2354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2355 sigaction (w->signum, &sa, 0); 2822 sigaction (w->signum, &sa, 0);
2823
2824 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2356#endif 2827#endif
2357 } 2828 }
2358 2829
2359 EV_FREQUENT_CHECK; 2830 EV_FREQUENT_CHECK;
2360} 2831}
2361 2832
2362void noinline 2833void noinline
… …
2370 2841
2371 wlist_del (&signals [w->signum - 1].head, (WL)w); 2842 wlist_del (&signals [w->signum - 1].head, (WL)w);
2372 ev_stop (EV_A_ (W)w); 2843 ev_stop (EV_A_ (W)w);
2373 2844
2374 if (!signals [w->signum - 1].head) 2845 if (!signals [w->signum - 1].head)
2846 {
2847#if EV_MULTIPLICITY
2848 signals [w->signum - 1].loop = 0; /* unattach from signal */
2849#endif
2850#if EV_USE_SIGNALFD
2851 if (sigfd >= 0)
2852 {
2853 sigset_t ss;
2854
2855 sigemptyset (&ss);
2856 sigaddset (&ss, w->signum);
2857 sigdelset (&sigfd_set, w->signum);
2858
2859 signalfd (sigfd, &sigfd_set, 0);
2860 sigprocmask (SIG_UNBLOCK, &ss, 0);
2861 }
2862 else
2863#endif
2375 signal (w->signum, SIG_DFL); 2864 signal (w->signum, SIG_DFL);
2865 }
2376 2866
2377 EV_FREQUENT_CHECK; 2867 EV_FREQUENT_CHECK;
2378} 2868}
2869
2870#endif
2871
2872#if EV_CHILD_ENABLE
2379 2873
2380void 2874void
2381ev_child_start (EV_P_ ev_child *w) 2875ev_child_start (EV_P_ ev_child *w)
2382{ 2876{
2383#if EV_MULTIPLICITY 2877#if EV_MULTIPLICITY
2384 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2385#endif 2879#endif
2386 if (expect_false (ev_is_active (w))) 2880 if (expect_false (ev_is_active (w)))
2387 return; 2881 return;
2388 2882
2389 EV_FREQUENT_CHECK; 2883 EV_FREQUENT_CHECK;
2390 2884
2391 ev_start (EV_A_ (W)w, 1); 2885 ev_start (EV_A_ (W)w, 1);
2392 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2886 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2393 2887
2394 EV_FREQUENT_CHECK; 2888 EV_FREQUENT_CHECK;
2395} 2889}
2396 2890
2397void 2891void
… …
2401 if (expect_false (!ev_is_active (w))) 2895 if (expect_false (!ev_is_active (w)))
2402 return; 2896 return;
2403 2897
2404 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2405 2899
2406 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 ev_stop (EV_A_ (W)w); 2901 ev_stop (EV_A_ (W)w);
2408 2902
2409 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2410} 2904}
2905
2906#endif
2411 2907
2412#if EV_STAT_ENABLE 2908#if EV_STAT_ENABLE
2413 2909
2414# ifdef _WIN32 2910# ifdef _WIN32
2415# undef lstat 2911# undef lstat
2416# define lstat(a,b) _stati64 (a,b) 2912# define lstat(a,b) _stati64 (a,b)
2417# endif 2913# endif
2418 2914
2419#define DEF_STAT_INTERVAL 5.0074891 2915#define DEF_STAT_INTERVAL 5.0074891
2916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2420#define MIN_STAT_INTERVAL 0.1074891 2917#define MIN_STAT_INTERVAL 0.1074891
2421 2918
2422static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2423 2920
2424#if EV_USE_INOTIFY 2921#if EV_USE_INOTIFY
2425# define EV_INOTIFY_BUFSIZE 8192 2922
2923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2426 2925
2427static void noinline 2926static void noinline
2428infy_add (EV_P_ ev_stat *w) 2927infy_add (EV_P_ ev_stat *w)
2429{ 2928{
2430 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); 2929 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);
2431 2930
2432 if (w->wd < 0) 2931 if (w->wd >= 0)
2932 {
2933 struct statfs sfs;
2934
2935 /* now local changes will be tracked by inotify, but remote changes won't */
2936 /* unless the filesystem is known to be local, we therefore still poll */
2937 /* also do poll on <2.6.25, but with normal frequency */
2938
2939 if (!fs_2625)
2940 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2941 else if (!statfs (w->path, &sfs)
2942 && (sfs.f_type == 0x1373 /* devfs */
2943 || sfs.f_type == 0xEF53 /* ext2/3 */
2944 || sfs.f_type == 0x3153464a /* jfs */
2945 || sfs.f_type == 0x52654973 /* reiser3 */
2946 || sfs.f_type == 0x01021994 /* tempfs */
2947 || sfs.f_type == 0x58465342 /* xfs */))
2948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2949 else
2950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2433 { 2951 }
2434 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2952 else
2953 {
2954 /* can't use inotify, continue to stat */
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2435 2956
2436 /* monitor some parent directory for speedup hints */ 2957 /* if path is not there, monitor some parent directory for speedup hints */
2437 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2958 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2438 /* but an efficiency issue only */ 2959 /* but an efficiency issue only */
2439 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2960 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2440 { 2961 {
2441 char path [4096]; 2962 char path [4096];
2442 strcpy (path, w->path); 2963 strcpy (path, w->path);
… …
2446 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2967 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2447 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2968 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2448 2969
2449 char *pend = strrchr (path, '/'); 2970 char *pend = strrchr (path, '/');
2450 2971
2451 if (!pend) 2972 if (!pend || pend == path)
2452 break; /* whoops, no '/', complain to your admin */ 2973 break;
2453 2974
2454 *pend = 0; 2975 *pend = 0;
2455 w->wd = inotify_add_watch (fs_fd, path, mask); 2976 w->wd = inotify_add_watch (fs_fd, path, mask);
2456 } 2977 }
2457 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2458 } 2979 }
2459 } 2980 }
2460 else
2461 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2462 2981
2463 if (w->wd >= 0) 2982 if (w->wd >= 0)
2464 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2983 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2984
2985 /* now re-arm timer, if required */
2986 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2987 ev_timer_again (EV_A_ &w->timer);
2988 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2465} 2989}
2466 2990
2467static void noinline 2991static void noinline
2468infy_del (EV_P_ ev_stat *w) 2992infy_del (EV_P_ ev_stat *w)
2469{ 2993{
… …
2472 2996
2473 if (wd < 0) 2997 if (wd < 0)
2474 return; 2998 return;
2475 2999
2476 w->wd = -2; 3000 w->wd = -2;
2477 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3001 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2478 wlist_del (&fs_hash [slot].head, (WL)w); 3002 wlist_del (&fs_hash [slot].head, (WL)w);
2479 3003
2480 /* remove this watcher, if others are watching it, they will rearm */ 3004 /* remove this watcher, if others are watching it, they will rearm */
2481 inotify_rm_watch (fs_fd, wd); 3005 inotify_rm_watch (fs_fd, wd);
2482} 3006}
… …
2484static void noinline 3008static void noinline
2485infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2486{ 3010{
2487 if (slot < 0) 3011 if (slot < 0)
2488 /* overflow, need to check for all hash slots */ 3012 /* overflow, need to check for all hash slots */
2489 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2490 infy_wd (EV_A_ slot, wd, ev); 3014 infy_wd (EV_A_ slot, wd, ev);
2491 else 3015 else
2492 { 3016 {
2493 WL w_; 3017 WL w_;
2494 3018
2495 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3019 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2496 { 3020 {
2497 ev_stat *w = (ev_stat *)w_; 3021 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us remove this watcher and all before it */ 3022 w_ = w_->next; /* lets us remove this watcher and all before it */
2499 3023
2500 if (w->wd == wd || wd == -1) 3024 if (w->wd == wd || wd == -1)
2501 { 3025 {
2502 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3026 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2503 { 3027 {
3028 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2504 w->wd = -1; 3029 w->wd = -1;
2505 infy_add (EV_A_ w); /* re-add, no matter what */ 3030 infy_add (EV_A_ w); /* re-add, no matter what */
2506 } 3031 }
2507 3032
2508 stat_timer_cb (EV_A_ &w->timer, 0); 3033 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2513 3038
2514static void 3039static void
2515infy_cb (EV_P_ ev_io *w, int revents) 3040infy_cb (EV_P_ ev_io *w, int revents)
2516{ 3041{
2517 char buf [EV_INOTIFY_BUFSIZE]; 3042 char buf [EV_INOTIFY_BUFSIZE];
2518 struct inotify_event *ev = (struct inotify_event *)buf;
2519 int ofs; 3043 int ofs;
2520 int len = read (fs_fd, buf, sizeof (buf)); 3044 int len = read (fs_fd, buf, sizeof (buf));
2521 3045
2522 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3046 for (ofs = 0; ofs < len; )
3047 {
3048 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2523 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3049 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len;
3051 }
2524} 3052}
2525 3053
2526void inline_size 3054inline_size unsigned int
2527infy_init (EV_P) 3055ev_linux_version (void)
2528{ 3056{
2529 if (fs_fd != -2) 3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
2530 return; 3063 return 0;
2531 3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void
3087ev_check_2625 (EV_P)
3088{
2532 /* kernels < 2.6.25 are borked 3089 /* kernels < 2.6.25 are borked
2533 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2534 */ 3091 */
2535 { 3092 if (ev_linux_version () < 0x020619)
2536 struct utsname buf; 3093 return;
2537 int major, minor, micro;
2538 3094
3095 fs_2625 = 1;
3096}
3097
3098inline_size int
3099infy_newfd (void)
3100{
3101#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3102 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3103 if (fd >= 0)
3104 return fd;
3105#endif
3106 return inotify_init ();
3107}
3108
3109inline_size void
3110infy_init (EV_P)
3111{
3112 if (fs_fd != -2)
3113 return;
3114
2539 fs_fd = -1; 3115 fs_fd = -1;
2540 3116
2541 if (uname (&buf)) 3117 ev_check_2625 (EV_A);
2542 return;
2543 3118
2544 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2545 return;
2546
2547 if (major < 2
2548 || (major == 2 && minor < 6)
2549 || (major == 2 && minor == 6 && micro < 25))
2550 return;
2551 }
2552
2553 fs_fd = inotify_init (); 3119 fs_fd = infy_newfd ();
2554 3120
2555 if (fs_fd >= 0) 3121 if (fs_fd >= 0)
2556 { 3122 {
3123 fd_intern (fs_fd);
2557 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3124 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2558 ev_set_priority (&fs_w, EV_MAXPRI); 3125 ev_set_priority (&fs_w, EV_MAXPRI);
2559 ev_io_start (EV_A_ &fs_w); 3126 ev_io_start (EV_A_ &fs_w);
3127 ev_unref (EV_A);
2560 } 3128 }
2561} 3129}
2562 3130
2563void inline_size 3131inline_size void
2564infy_fork (EV_P) 3132infy_fork (EV_P)
2565{ 3133{
2566 int slot; 3134 int slot;
2567 3135
2568 if (fs_fd < 0) 3136 if (fs_fd < 0)
2569 return; 3137 return;
2570 3138
3139 ev_ref (EV_A);
3140 ev_io_stop (EV_A_ &fs_w);
2571 close (fs_fd); 3141 close (fs_fd);
2572 fs_fd = inotify_init (); 3142 fs_fd = infy_newfd ();
2573 3143
3144 if (fs_fd >= 0)
3145 {
3146 fd_intern (fs_fd);
3147 ev_io_set (&fs_w, fs_fd, EV_READ);
3148 ev_io_start (EV_A_ &fs_w);
3149 ev_unref (EV_A);
3150 }
3151
2574 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3152 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2575 { 3153 {
2576 WL w_ = fs_hash [slot].head; 3154 WL w_ = fs_hash [slot].head;
2577 fs_hash [slot].head = 0; 3155 fs_hash [slot].head = 0;
2578 3156
2579 while (w_) 3157 while (w_)
… …
2584 w->wd = -1; 3162 w->wd = -1;
2585 3163
2586 if (fs_fd >= 0) 3164 if (fs_fd >= 0)
2587 infy_add (EV_A_ w); /* re-add, no matter what */ 3165 infy_add (EV_A_ w); /* re-add, no matter what */
2588 else 3166 else
3167 {
3168 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3169 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2589 ev_timer_start (EV_A_ &w->timer); 3170 ev_timer_again (EV_A_ &w->timer);
3171 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3172 }
2590 } 3173 }
2591 } 3174 }
2592} 3175}
2593 3176
2594#endif 3177#endif
… …
2611static void noinline 3194static void noinline
2612stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3195stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2613{ 3196{
2614 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2615 3198
2616 /* we copy this here each the time so that */ 3199 ev_statdata prev = w->attr;
2617 /* prev has the old value when the callback gets invoked */
2618 w->prev = w->attr;
2619 ev_stat_stat (EV_A_ w); 3200 ev_stat_stat (EV_A_ w);
2620 3201
2621 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3202 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2622 if ( 3203 if (
2623 w->prev.st_dev != w->attr.st_dev 3204 prev.st_dev != w->attr.st_dev
2624 || w->prev.st_ino != w->attr.st_ino 3205 || prev.st_ino != w->attr.st_ino
2625 || w->prev.st_mode != w->attr.st_mode 3206 || prev.st_mode != w->attr.st_mode
2626 || w->prev.st_nlink != w->attr.st_nlink 3207 || prev.st_nlink != w->attr.st_nlink
2627 || w->prev.st_uid != w->attr.st_uid 3208 || prev.st_uid != w->attr.st_uid
2628 || w->prev.st_gid != w->attr.st_gid 3209 || prev.st_gid != w->attr.st_gid
2629 || w->prev.st_rdev != w->attr.st_rdev 3210 || prev.st_rdev != w->attr.st_rdev
2630 || w->prev.st_size != w->attr.st_size 3211 || prev.st_size != w->attr.st_size
2631 || w->prev.st_atime != w->attr.st_atime 3212 || prev.st_atime != w->attr.st_atime
2632 || w->prev.st_mtime != w->attr.st_mtime 3213 || prev.st_mtime != w->attr.st_mtime
2633 || w->prev.st_ctime != w->attr.st_ctime 3214 || prev.st_ctime != w->attr.st_ctime
2634 ) { 3215 ) {
3216 /* we only update w->prev on actual differences */
3217 /* in case we test more often than invoke the callback, */
3218 /* to ensure that prev is always different to attr */
3219 w->prev = prev;
3220
2635 #if EV_USE_INOTIFY 3221 #if EV_USE_INOTIFY
2636 if (fs_fd >= 0) 3222 if (fs_fd >= 0)
2637 { 3223 {
2638 infy_del (EV_A_ w); 3224 infy_del (EV_A_ w);
2639 infy_add (EV_A_ w); 3225 infy_add (EV_A_ w);
… …
2649ev_stat_start (EV_P_ ev_stat *w) 3235ev_stat_start (EV_P_ ev_stat *w)
2650{ 3236{
2651 if (expect_false (ev_is_active (w))) 3237 if (expect_false (ev_is_active (w)))
2652 return; 3238 return;
2653 3239
2654 /* since we use memcmp, we need to clear any padding data etc. */
2655 memset (&w->prev, 0, sizeof (ev_statdata));
2656 memset (&w->attr, 0, sizeof (ev_statdata));
2657
2658 ev_stat_stat (EV_A_ w); 3240 ev_stat_stat (EV_A_ w);
2659 3241
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2660 if (w->interval < MIN_STAT_INTERVAL) 3243 w->interval = MIN_STAT_INTERVAL;
2661 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2662 3244
2663 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3245 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2664 ev_set_priority (&w->timer, ev_priority (w)); 3246 ev_set_priority (&w->timer, ev_priority (w));
2665 3247
2666#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
2667 infy_init (EV_A); 3249 infy_init (EV_A);
2668 3250
2669 if (fs_fd >= 0) 3251 if (fs_fd >= 0)
2670 infy_add (EV_A_ w); 3252 infy_add (EV_A_ w);
2671 else 3253 else
2672#endif 3254#endif
3255 {
2673 ev_timer_start (EV_A_ &w->timer); 3256 ev_timer_again (EV_A_ &w->timer);
3257 ev_unref (EV_A);
3258 }
2674 3259
2675 ev_start (EV_A_ (W)w, 1); 3260 ev_start (EV_A_ (W)w, 1);
2676 3261
2677 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2678} 3263}
… …
2687 EV_FREQUENT_CHECK; 3272 EV_FREQUENT_CHECK;
2688 3273
2689#if EV_USE_INOTIFY 3274#if EV_USE_INOTIFY
2690 infy_del (EV_A_ w); 3275 infy_del (EV_A_ w);
2691#endif 3276#endif
3277
3278 if (ev_is_active (&w->timer))
3279 {
3280 ev_ref (EV_A);
2692 ev_timer_stop (EV_A_ &w->timer); 3281 ev_timer_stop (EV_A_ &w->timer);
3282 }
2693 3283
2694 ev_stop (EV_A_ (W)w); 3284 ev_stop (EV_A_ (W)w);
2695 3285
2696 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2697} 3287}
… …
2742 3332
2743 EV_FREQUENT_CHECK; 3333 EV_FREQUENT_CHECK;
2744} 3334}
2745#endif 3335#endif
2746 3336
3337#if EV_PREPARE_ENABLE
2747void 3338void
2748ev_prepare_start (EV_P_ ev_prepare *w) 3339ev_prepare_start (EV_P_ ev_prepare *w)
2749{ 3340{
2750 if (expect_false (ev_is_active (w))) 3341 if (expect_false (ev_is_active (w)))
2751 return; 3342 return;
… …
2777 3368
2778 ev_stop (EV_A_ (W)w); 3369 ev_stop (EV_A_ (W)w);
2779 3370
2780 EV_FREQUENT_CHECK; 3371 EV_FREQUENT_CHECK;
2781} 3372}
3373#endif
2782 3374
3375#if EV_CHECK_ENABLE
2783void 3376void
2784ev_check_start (EV_P_ ev_check *w) 3377ev_check_start (EV_P_ ev_check *w)
2785{ 3378{
2786 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2787 return; 3380 return;
… …
2813 3406
2814 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
2815 3408
2816 EV_FREQUENT_CHECK; 3409 EV_FREQUENT_CHECK;
2817} 3410}
3411#endif
2818 3412
2819#if EV_EMBED_ENABLE 3413#if EV_EMBED_ENABLE
2820void noinline 3414void noinline
2821ev_embed_sweep (EV_P_ ev_embed *w) 3415ev_embed_sweep (EV_P_ ev_embed *w)
2822{ 3416{
… …
2838embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2839{ 3433{
2840 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3434 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2841 3435
2842 { 3436 {
2843 struct ev_loop *loop = w->other; 3437 EV_P = w->other;
2844 3438
2845 while (fdchangecnt) 3439 while (fdchangecnt)
2846 { 3440 {
2847 fd_reify (EV_A); 3441 fd_reify (EV_A);
2848 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3442 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2853static void 3447static void
2854embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3448embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2855{ 3449{
2856 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3450 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2857 3451
3452 ev_embed_stop (EV_A_ w);
3453
2858 { 3454 {
2859 struct ev_loop *loop = w->other; 3455 EV_P = w->other;
2860 3456
2861 ev_loop_fork (EV_A); 3457 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2862 } 3459 }
3460
3461 ev_embed_start (EV_A_ w);
2863} 3462}
2864 3463
2865#if 0 3464#if 0
2866static void 3465static void
2867embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3466embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2875{ 3474{
2876 if (expect_false (ev_is_active (w))) 3475 if (expect_false (ev_is_active (w)))
2877 return; 3476 return;
2878 3477
2879 { 3478 {
2880 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2881 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3480 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2882 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3481 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2883 } 3482 }
2884 3483
2885 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2886 3485
… …
2912 3511
2913 ev_io_stop (EV_A_ &w->io); 3512 ev_io_stop (EV_A_ &w->io);
2914 ev_prepare_stop (EV_A_ &w->prepare); 3513 ev_prepare_stop (EV_A_ &w->prepare);
2915 ev_fork_stop (EV_A_ &w->fork); 3514 ev_fork_stop (EV_A_ &w->fork);
2916 3515
3516 ev_stop (EV_A_ (W)w);
3517
2917 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2918} 3519}
2919#endif 3520#endif
2920 3521
2921#if EV_FORK_ENABLE 3522#if EV_FORK_ENABLE
… …
2997 3598
2998void 3599void
2999ev_async_send (EV_P_ ev_async *w) 3600ev_async_send (EV_P_ ev_async *w)
3000{ 3601{
3001 w->sent = 1; 3602 w->sent = 1;
3002 evpipe_write (EV_A_ &gotasync); 3603 evpipe_write (EV_A_ &async_pending);
3003} 3604}
3004#endif 3605#endif
3005 3606
3006/*****************************************************************************/ 3607/*****************************************************************************/
3007 3608
… …
3047{ 3648{
3048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3049 3650
3050 if (expect_false (!once)) 3651 if (expect_false (!once))
3051 { 3652 {
3052 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3053 return; 3654 return;
3054 } 3655 }
3055 3656
3056 once->cb = cb; 3657 once->cb = cb;
3057 once->arg = arg; 3658 once->arg = arg;
… …
3069 ev_timer_set (&once->to, timeout, 0.); 3670 ev_timer_set (&once->to, timeout, 0.);
3070 ev_timer_start (EV_A_ &once->to); 3671 ev_timer_start (EV_A_ &once->to);
3071 } 3672 }
3072} 3673}
3073 3674
3675/*****************************************************************************/
3676
3677#if EV_WALK_ENABLE
3678void
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680{
3681 int i, j;
3682 ev_watcher_list *wl, *wn;
3683
3684 if (types & (EV_IO | EV_EMBED))
3685 for (i = 0; i < anfdmax; ++i)
3686 for (wl = anfds [i].head; wl; )
3687 {
3688 wn = wl->next;
3689
3690#if EV_EMBED_ENABLE
3691 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3692 {
3693 if (types & EV_EMBED)
3694 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3695 }
3696 else
3697#endif
3698#if EV_USE_INOTIFY
3699 if (ev_cb ((ev_io *)wl) == infy_cb)
3700 ;
3701 else
3702#endif
3703 if ((ev_io *)wl != &pipe_w)
3704 if (types & EV_IO)
3705 cb (EV_A_ EV_IO, wl);
3706
3707 wl = wn;
3708 }
3709
3710 if (types & (EV_TIMER | EV_STAT))
3711 for (i = timercnt + HEAP0; i-- > HEAP0; )
3712#if EV_STAT_ENABLE
3713 /*TODO: timer is not always active*/
3714 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3715 {
3716 if (types & EV_STAT)
3717 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3718 }
3719 else
3720#endif
3721 if (types & EV_TIMER)
3722 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3723
3724#if EV_PERIODIC_ENABLE
3725 if (types & EV_PERIODIC)
3726 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif
3729
3730#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; )
3733 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif
3736
3737#if EV_FORK_ENABLE
3738 if (types & EV_FORK)
3739 for (i = forkcnt; i--; )
3740 if (ev_cb (forks [i]) != embed_fork_cb)
3741 cb (EV_A_ EV_FORK, forks [i]);
3742#endif
3743
3744#if EV_ASYNC_ENABLE
3745 if (types & EV_ASYNC)
3746 for (i = asynccnt; i--; )
3747 cb (EV_A_ EV_ASYNC, asyncs [i]);
3748#endif
3749
3750#if EV_PREPARE_ENABLE
3751 if (types & EV_PREPARE)
3752 for (i = preparecnt; i--; )
3753# if EV_EMBED_ENABLE
3754 if (ev_cb (prepares [i]) != embed_prepare_cb)
3755# endif
3756 cb (EV_A_ EV_PREPARE, prepares [i]);
3757#endif
3758
3759#if EV_CHECK_ENABLE
3760 if (types & EV_CHECK)
3761 for (i = checkcnt; i--; )
3762 cb (EV_A_ EV_CHECK, checks [i]);
3763#endif
3764
3765#if EV_SIGNAL_ENABLE
3766 if (types & EV_SIGNAL)
3767 for (i = 0; i < EV_NSIG - 1; ++i)
3768 for (wl = signals [i].head; wl; )
3769 {
3770 wn = wl->next;
3771 cb (EV_A_ EV_SIGNAL, wl);
3772 wl = wn;
3773 }
3774#endif
3775
3776#if EV_CHILD_ENABLE
3777 if (types & EV_CHILD)
3778 for (i = (EV_PID_HASHSIZE); i--; )
3779 for (wl = childs [i]; wl; )
3780 {
3781 wn = wl->next;
3782 cb (EV_A_ EV_CHILD, wl);
3783 wl = wn;
3784 }
3785#endif
3786/* EV_STAT 0x00001000 /* stat data changed */
3787/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3788}
3789#endif
3790
3074#if EV_MULTIPLICITY 3791#if EV_MULTIPLICITY
3075 #include "ev_wrap.h" 3792 #include "ev_wrap.h"
3076#endif 3793#endif
3077 3794
3078#ifdef __cplusplus 3795#ifdef __cplusplus

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