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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 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
… …
154#ifndef _WIN32 187#ifndef _WIN32
155# include <sys/time.h> 188# include <sys/time.h>
156# include <sys/wait.h> 189# include <sys/wait.h>
157# include <unistd.h> 190# include <unistd.h>
158#else 191#else
192# include <io.h>
159# define WIN32_LEAN_AND_MEAN 193# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 194# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 195# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 196# define EV_SELECT_IS_WINSOCKET 1
163# endif 197# endif
198# undef EV_AVOID_STDIO
164#endif 199#endif
165 200
166/* 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 */
167 202
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
238
168#ifndef EV_USE_MONOTONIC 239#ifndef EV_USE_MONOTONIC
240# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
241# define EV_USE_MONOTONIC EV_FEATURE_OS
242# else
169# define EV_USE_MONOTONIC 0 243# define EV_USE_MONOTONIC 0
244# endif
170#endif 245#endif
171 246
172#ifndef EV_USE_REALTIME 247#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 248# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 249#endif
175 250
176#ifndef EV_USE_NANOSLEEP 251#ifndef EV_USE_NANOSLEEP
252# if _POSIX_C_SOURCE >= 199309L
253# define EV_USE_NANOSLEEP EV_FEATURE_OS
254# else
177# define EV_USE_NANOSLEEP 0 255# define EV_USE_NANOSLEEP 0
256# endif
178#endif 257#endif
179 258
180#ifndef EV_USE_SELECT 259#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 260# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 261#endif
183 262
184#ifndef EV_USE_POLL 263#ifndef EV_USE_POLL
185# ifdef _WIN32 264# ifdef _WIN32
186# define EV_USE_POLL 0 265# define EV_USE_POLL 0
187# else 266# else
188# define EV_USE_POLL 1 267# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 268# endif
190#endif 269#endif
191 270
192#ifndef EV_USE_EPOLL 271#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 273# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 274# else
196# define EV_USE_EPOLL 0 275# define EV_USE_EPOLL 0
197# endif 276# endif
198#endif 277#endif
199 278
… …
205# define EV_USE_PORT 0 284# define EV_USE_PORT 0
206#endif 285#endif
207 286
208#ifndef EV_USE_INOTIFY 287#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 288# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 289# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 290# else
212# define EV_USE_INOTIFY 0 291# define EV_USE_INOTIFY 0
213# endif 292# endif
214#endif 293#endif
215 294
216#ifndef EV_PID_HASHSIZE 295#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 296# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 297#endif
223 298
224#ifndef EV_INOTIFY_HASHSIZE 299#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 300# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 301#endif
231 302
232#ifndef EV_USE_EVENTFD 303#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 304# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 305# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 306# else
236# define EV_USE_EVENTFD 0 307# define EV_USE_EVENTFD 0
237# endif 308# endif
238#endif 309#endif
239 310
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
316# endif
317#endif
318
240#if 0 /* debugging */ 319#if 0 /* debugging */
241# define EV_VERIFY 1 320# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 321# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 322# define EV_HEAP_CACHE_AT 1
244#endif 323#endif
245 324
325#ifndef EV_VERIFY
326# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
327#endif
328
246#ifndef EV_USE_4HEAP 329#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL 330# define EV_USE_4HEAP EV_FEATURE_DATA
248#endif 331#endif
249 332
250#ifndef EV_HEAP_CACHE_AT 333#ifndef EV_HEAP_CACHE_AT
251# 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
252#endif 349#endif
253 350
254/* 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
255 358
256#ifndef CLOCK_MONOTONIC 359#ifndef CLOCK_MONOTONIC
257# undef EV_USE_MONOTONIC 360# undef EV_USE_MONOTONIC
258# define EV_USE_MONOTONIC 0 361# define EV_USE_MONOTONIC 0
259#endif 362#endif
… …
273# include <sys/select.h> 376# include <sys/select.h>
274# endif 377# endif
275#endif 378#endif
276 379
277#if EV_USE_INOTIFY 380#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h>
278# include <sys/inotify.h> 383# include <sys/inotify.h>
384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY
387# define EV_USE_INOTIFY 0
388# endif
279#endif 389#endif
280 390
281#if EV_SELECT_IS_WINSOCKET 391#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h> 392# include <winsock.h>
283#endif 393#endif
284 394
285#if EV_USE_EVENTFD 395#if EV_USE_EVENTFD
286/* 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 */
287# 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
288# ifdef __cplusplus 408# ifdef __cplusplus
289extern "C" { 409extern "C" {
290# endif 410# endif
291int eventfd (unsigned int initval, int flags); 411int (eventfd) (unsigned int initval, int flags);
292# ifdef __cplusplus 412# ifdef __cplusplus
293} 413}
294# endif 414# endif
295#endif 415#endif
296 416
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
297/**/ 446/**/
298 447
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1 448#if EV_VERIFY >= 3
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
306#else 450#else
307# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
308#endif 452#endif
309 453
310/* 454/*
… …
317 */ 461 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
319 463
320#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) */
321#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) */
322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
323 466
324#if __GNUC__ >= 4 467#if __GNUC__ >= 4
325# define expect(expr,value) __builtin_expect ((expr),(value)) 468# define expect(expr,value) __builtin_expect ((expr),(value))
326# define noinline __attribute__ ((noinline)) 469# define noinline __attribute__ ((noinline))
327#else 470#else
… …
334 477
335#define expect_false(expr) expect ((expr) != 0, 0) 478#define expect_false(expr) expect ((expr) != 0, 0)
336#define expect_true(expr) expect ((expr) != 0, 1) 479#define expect_true(expr) expect ((expr) != 0, 1)
337#define inline_size static inline 480#define inline_size static inline
338 481
339#if EV_MINIMAL 482#if EV_FEATURE_CODE
483# define inline_speed static inline
484#else
340# 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)
341#else 492#else
342# define inline_speed static inline
343#endif
344
345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 493# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
494#endif
347 495
348#define EMPTY /* required for microsofts broken pseudo-c compiler */ 496#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */ 497#define EMPTY2(a,b) /* used to suppress some warnings */
350 498
351typedef ev_watcher *W; 499typedef ev_watcher *W;
… …
353typedef ev_watcher_time *WT; 501typedef ev_watcher_time *WT;
354 502
355#define ev_active(w) ((W)(w))->active 503#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at 504#define ev_at(w) ((WT)(w))->at
357 505
358#if EV_USE_MONOTONIC 506#if EV_USE_REALTIME
359/* 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 */
360/* 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
361static 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)
362#endif 524#endif
363 525
364#ifdef _WIN32 526#ifdef _WIN32
365# include "ev_win32.c" 527# include "ev_win32.c"
366#endif 528#endif
367 529
368/*****************************************************************************/ 530/*****************************************************************************/
369 531
532#if EV_AVOID_STDIO
533static void noinline
534ev_printerr (const char *msg)
535{
536 write (STDERR_FILENO, msg, strlen (msg));
537}
538#endif
539
370static void (*syserr_cb)(const char *msg); 540static void (*syserr_cb)(const char *msg);
371 541
372void 542void
373ev_set_syserr_cb (void (*cb)(const char *msg)) 543ev_set_syserr_cb (void (*cb)(const char *msg))
374{ 544{
375 syserr_cb = cb; 545 syserr_cb = cb;
376} 546}
377 547
378static void noinline 548static void noinline
379syserr (const char *msg) 549ev_syserr (const char *msg)
380{ 550{
381 if (!msg) 551 if (!msg)
382 msg = "(libev) system error"; 552 msg = "(libev) system error";
383 553
384 if (syserr_cb) 554 if (syserr_cb)
385 syserr_cb (msg); 555 syserr_cb (msg);
386 else 556 else
387 { 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
388 perror (msg); 566 perror (msg);
567#endif
389 abort (); 568 abort ();
390 } 569 }
391} 570}
392 571
393static void * 572static void *
394ev_realloc_emul (void *ptr, long size) 573ev_realloc_emul (void *ptr, long size)
395{ 574{
575#if __GLIBC__
576 return realloc (ptr, size);
577#else
396 /* some systems, notably openbsd and darwin, fail to properly 578 /* some systems, notably openbsd and darwin, fail to properly
397 * 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
398 * the single unix specification, so work around them here. 580 * the single unix specification, so work around them here.
399 */ 581 */
400 582
401 if (size) 583 if (size)
402 return realloc (ptr, size); 584 return realloc (ptr, size);
403 585
404 free (ptr); 586 free (ptr);
405 return 0; 587 return 0;
588#endif
406} 589}
407 590
408static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
409 592
410void 593void
… …
418{ 601{
419 ptr = alloc (ptr, size); 602 ptr = alloc (ptr, size);
420 603
421 if (!ptr && size) 604 if (!ptr && size)
422 { 605 {
606#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n");
608#else
423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
610#endif
424 abort (); 611 abort ();
425 } 612 }
426 613
427 return ptr; 614 return ptr;
428} 615}
… …
430#define ev_malloc(size) ev_realloc (0, (size)) 617#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0) 618#define ev_free(ptr) ev_realloc ((ptr), 0)
432 619
433/*****************************************************************************/ 620/*****************************************************************************/
434 621
622/* set in reify when reification needed */
623#define EV_ANFD_REIFY 1
624
625/* file descriptor info structure */
435typedef struct 626typedef struct
436{ 627{
437 WL head; 628 WL head;
438 unsigned char events; 629 unsigned char events; /* the events watched for */
630 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439 unsigned char reify; 632 unsigned char unused;
633#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif
440#if EV_SELECT_IS_WINSOCKET 636#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle; 637 SOCKET handle;
442#endif 638#endif
443} ANFD; 639} ANFD;
444 640
641/* stores the pending event set for a given watcher */
445typedef struct 642typedef struct
446{ 643{
447 W w; 644 W w;
448 int events; 645 int events; /* the pending event set for the given watcher */
449} ANPENDING; 646} ANPENDING;
450 647
451#if EV_USE_INOTIFY 648#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */ 649/* hash table entry per inotify-id */
453typedef struct 650typedef struct
… …
456} ANFS; 653} ANFS;
457#endif 654#endif
458 655
459/* Heap Entry */ 656/* Heap Entry */
460#if EV_HEAP_CACHE_AT 657#if EV_HEAP_CACHE_AT
658 /* a heap element */
461 typedef struct { 659 typedef struct {
462 ev_tstamp at; 660 ev_tstamp at;
463 WT w; 661 WT w;
464 } ANHE; 662 } ANHE;
465 663
466 #define ANHE_w(he) (he).w /* access watcher, read-write */ 664 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */ 665 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #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 */
469#else 667#else
668 /* a heap element */
470 typedef WT ANHE; 669 typedef WT ANHE;
471 670
472 #define ANHE_w(he) (he) 671 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at 672 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he) 673 #define ANHE_at_cache(he)
… …
498 697
499 static int ev_default_loop_ptr; 698 static int ev_default_loop_ptr;
500 699
501#endif 700#endif
502 701
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
503/*****************************************************************************/ 714/*****************************************************************************/
504 715
716#ifndef EV_HAVE_EV_TIME
505ev_tstamp 717ev_tstamp
506ev_time (void) 718ev_time (void)
507{ 719{
508#if EV_USE_REALTIME 720#if EV_USE_REALTIME
721 if (expect_true (have_realtime))
722 {
509 struct timespec ts; 723 struct timespec ts;
510 clock_gettime (CLOCK_REALTIME, &ts); 724 clock_gettime (CLOCK_REALTIME, &ts);
511 return ts.tv_sec + ts.tv_nsec * 1e-9; 725 return ts.tv_sec + ts.tv_nsec * 1e-9;
512#else 726 }
727#endif
728
513 struct timeval tv; 729 struct timeval tv;
514 gettimeofday (&tv, 0); 730 gettimeofday (&tv, 0);
515 return tv.tv_sec + tv.tv_usec * 1e-6; 731 return tv.tv_sec + tv.tv_usec * 1e-6;
516#endif
517} 732}
733#endif
518 734
519ev_tstamp inline_size 735inline_size ev_tstamp
520get_clock (void) 736get_clock (void)
521{ 737{
522#if EV_USE_MONOTONIC 738#if EV_USE_MONOTONIC
523 if (expect_true (have_monotonic)) 739 if (expect_true (have_monotonic))
524 { 740 {
… …
557 struct timeval tv; 773 struct timeval tv;
558 774
559 tv.tv_sec = (time_t)delay; 775 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561 777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */
562 select (0, 0, 0, 0, &tv); 781 select (0, 0, 0, 0, &tv);
563#endif 782#endif
564 } 783 }
565} 784}
566 785
567/*****************************************************************************/ 786/*****************************************************************************/
568 787
569#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 */
570 789
571int 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
572array_nextsize (int elem, int cur, int cnt) 793array_nextsize (int elem, int cur, int cnt)
573{ 794{
574 int ncur = cur + 1; 795 int ncur = cur + 1;
575 796
576 do 797 do
… …
593array_realloc (int elem, void *base, int *cur, int cnt) 814array_realloc (int elem, void *base, int *cur, int cnt)
594{ 815{
595 *cur = array_nextsize (elem, *cur, cnt); 816 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur); 817 return ev_realloc (base, elem * *cur);
597} 818}
819
820#define array_init_zero(base,count) \
821 memset ((void *)(base), 0, sizeof (*(base)) * (count))
598 822
599#define array_needsize(type,base,cur,cnt,init) \ 823#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \ 824 if (expect_false ((cnt) > (cur))) \
601 { \ 825 { \
602 int ocur_ = (cur); \ 826 int ocur_ = (cur); \
… …
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 838 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 } 839 }
616#endif 840#endif
617 841
618#define array_free(stem, idx) \ 842#define array_free(stem, idx) \
619 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
620 844
621/*****************************************************************************/ 845/*****************************************************************************/
846
847/* dummy callback for pending events */
848static void noinline
849pendingcb (EV_P_ ev_prepare *w, int revents)
850{
851}
622 852
623void noinline 853void noinline
624ev_feed_event (EV_P_ void *w, int revents) 854ev_feed_event (EV_P_ void *w, int revents)
625{ 855{
626 W w_ = (W)w; 856 W w_ = (W)w;
… …
635 pendings [pri][w_->pending - 1].w = w_; 865 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents; 866 pendings [pri][w_->pending - 1].events = revents;
637 } 867 }
638} 868}
639 869
640void 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
641queue_events (EV_P_ W *events, int eventcnt, int type) 886queue_events (EV_P_ W *events, int eventcnt, int type)
642{ 887{
643 int i; 888 int i;
644 889
645 for (i = 0; i < eventcnt; ++i) 890 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type); 891 ev_feed_event (EV_A_ events [i], type);
647} 892}
648 893
649/*****************************************************************************/ 894/*****************************************************************************/
650 895
651void inline_size 896inline_speed void
652anfds_init (ANFD *base, int count)
653{
654 while (count--)
655 {
656 base->head = 0;
657 base->events = EV_NONE;
658 base->reify = 0;
659
660 ++base;
661 }
662}
663
664void inline_speed
665fd_event (EV_P_ int fd, int revents) 897fd_event_nocheck (EV_P_ int fd, int revents)
666{ 898{
667 ANFD *anfd = anfds + fd; 899 ANFD *anfd = anfds + fd;
668 ev_io *w; 900 ev_io *w;
669 901
670 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)
… …
674 if (ev) 906 if (ev)
675 ev_feed_event (EV_A_ (W)w, ev); 907 ev_feed_event (EV_A_ (W)w, ev);
676 } 908 }
677} 909}
678 910
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
679void 922void
680ev_feed_fd_event (EV_P_ int fd, int revents) 923ev_feed_fd_event (EV_P_ int fd, int revents)
681{ 924{
682 if (fd >= 0 && fd < anfdmax) 925 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents); 926 fd_event_nocheck (EV_A_ fd, revents);
684} 927}
685 928
686void inline_size 929/* make sure the external fd watch events are in-sync */
930/* with the kernel/libev internal state */
931inline_size void
687fd_reify (EV_P) 932fd_reify (EV_P)
688{ 933{
689 int i; 934 int i;
690 935
691 for (i = 0; i < fdchangecnt; ++i) 936 for (i = 0; i < fdchangecnt; ++i)
… …
700 events |= (unsigned char)w->events; 945 events |= (unsigned char)w->events;
701 946
702#if EV_SELECT_IS_WINSOCKET 947#if EV_SELECT_IS_WINSOCKET
703 if (events) 948 if (events)
704 { 949 {
705 unsigned long argp; 950 unsigned long arg;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
709 anfd->handle = _get_osfhandle (fd);
710 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712 } 953 }
713#endif 954#endif
714 955
715 { 956 {
716 unsigned char o_events = anfd->events; 957 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify; 958 unsigned char o_reify = anfd->reify;
718 959
719 anfd->reify = 0; 960 anfd->reify = 0;
720 anfd->events = events; 961 anfd->events = events;
721 962
722 if (o_events != events || o_reify & EV_IOFDSET) 963 if (o_events != events || o_reify & EV__IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events); 964 backend_modify (EV_A_ fd, o_events, events);
724 } 965 }
725 } 966 }
726 967
727 fdchangecnt = 0; 968 fdchangecnt = 0;
728} 969}
729 970
730void inline_size 971/* something about the given fd changed */
972inline_size void
731fd_change (EV_P_ int fd, int flags) 973fd_change (EV_P_ int fd, int flags)
732{ 974{
733 unsigned char reify = anfds [fd].reify; 975 unsigned char reify = anfds [fd].reify;
734 anfds [fd].reify |= flags; 976 anfds [fd].reify |= flags;
735 977
… …
739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 981 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740 fdchanges [fdchangecnt - 1] = fd; 982 fdchanges [fdchangecnt - 1] = fd;
741 } 983 }
742} 984}
743 985
744void inline_speed 986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void
745fd_kill (EV_P_ int fd) 988fd_kill (EV_P_ int fd)
746{ 989{
747 ev_io *w; 990 ev_io *w;
748 991
749 while ((w = (ev_io *)anfds [fd].head)) 992 while ((w = (ev_io *)anfds [fd].head))
… …
751 ev_io_stop (EV_A_ w); 994 ev_io_stop (EV_A_ w);
752 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);
753 } 996 }
754} 997}
755 998
756int inline_size 999/* check whether the given fd is actually valid, for error recovery */
1000inline_size int
757fd_valid (int fd) 1001fd_valid (int fd)
758{ 1002{
759#ifdef _WIN32 1003#ifdef _WIN32
760 return _get_osfhandle (fd) != -1; 1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
761#else 1005#else
762 return fcntl (fd, F_GETFD) != -1; 1006 return fcntl (fd, F_GETFD) != -1;
763#endif 1007#endif
764} 1008}
765 1009
… …
769{ 1013{
770 int fd; 1014 int fd;
771 1015
772 for (fd = 0; fd < anfdmax; ++fd) 1016 for (fd = 0; fd < anfdmax; ++fd)
773 if (anfds [fd].events) 1017 if (anfds [fd].events)
774 if (!fd_valid (fd) == -1 && errno == EBADF) 1018 if (!fd_valid (fd) && errno == EBADF)
775 fd_kill (EV_A_ fd); 1019 fd_kill (EV_A_ fd);
776} 1020}
777 1021
778/* called on ENOMEM in select/poll to kill some fds and retry */ 1022/* called on ENOMEM in select/poll to kill some fds and retry */
779static void noinline 1023static void noinline
… …
783 1027
784 for (fd = anfdmax; fd--; ) 1028 for (fd = anfdmax; fd--; )
785 if (anfds [fd].events) 1029 if (anfds [fd].events)
786 { 1030 {
787 fd_kill (EV_A_ fd); 1031 fd_kill (EV_A_ fd);
788 return; 1032 break;
789 } 1033 }
790} 1034}
791 1035
792/* 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 */
793static void noinline 1037static void noinline
… …
797 1041
798 for (fd = 0; fd < anfdmax; ++fd) 1042 for (fd = 0; fd < anfdmax; ++fd)
799 if (anfds [fd].events) 1043 if (anfds [fd].events)
800 { 1044 {
801 anfds [fd].events = 0; 1045 anfds [fd].events = 0;
1046 anfds [fd].emask = 0;
802 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1047 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803 } 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
804} 1063}
805 1064
806/*****************************************************************************/ 1065/*****************************************************************************/
807 1066
808/* 1067/*
… …
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1082#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1083#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k)) 1084#define UPHEAP_DONE(p,k) ((p) == (k))
826 1085
827/* away from the root */ 1086/* away from the root */
828void inline_speed 1087inline_speed void
829downheap (ANHE *heap, int N, int k) 1088downheap (ANHE *heap, int N, int k)
830{ 1089{
831 ANHE he = heap [k]; 1090 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0; 1091 ANHE *E = heap + N + HEAP0;
833 1092
… …
873#define HEAP0 1 1132#define HEAP0 1
874#define HPARENT(k) ((k) >> 1) 1133#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p)) 1134#define UPHEAP_DONE(p,k) (!(p))
876 1135
877/* away from the root */ 1136/* away from the root */
878void inline_speed 1137inline_speed void
879downheap (ANHE *heap, int N, int k) 1138downheap (ANHE *heap, int N, int k)
880{ 1139{
881 ANHE he = heap [k]; 1140 ANHE he = heap [k];
882 1141
883 for (;;) 1142 for (;;)
884 { 1143 {
885 int c = k << 1; 1144 int c = k << 1;
886 1145
887 if (c > N + HEAP0 - 1) 1146 if (c >= N + HEAP0)
888 break; 1147 break;
889 1148
890 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])
891 ? 1 : 0; 1150 ? 1 : 0;
892 1151
… …
903 ev_active (ANHE_w (he)) = k; 1162 ev_active (ANHE_w (he)) = k;
904} 1163}
905#endif 1164#endif
906 1165
907/* towards the root */ 1166/* towards the root */
908void inline_speed 1167inline_speed void
909upheap (ANHE *heap, int k) 1168upheap (ANHE *heap, int k)
910{ 1169{
911 ANHE he = heap [k]; 1170 ANHE he = heap [k];
912 1171
913 for (;;) 1172 for (;;)
… …
924 1183
925 heap [k] = he; 1184 heap [k] = he;
926 ev_active (ANHE_w (he)) = k; 1185 ev_active (ANHE_w (he)) = k;
927} 1186}
928 1187
929void inline_size 1188/* move an element suitably so it is in a correct place */
1189inline_size void
930adjustheap (ANHE *heap, int N, int k) 1190adjustheap (ANHE *heap, int N, int k)
931{ 1191{
932 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)]))
933 upheap (heap, k); 1193 upheap (heap, k);
934 else 1194 else
935 downheap (heap, N, k); 1195 downheap (heap, N, k);
936} 1196}
937 1197
938/* 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 */
939void inline_size 1199inline_size void
940reheap (ANHE *heap, int N) 1200reheap (ANHE *heap, int N)
941{ 1201{
942 int i; 1202 int i;
1203
943 /* 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 */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1205 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i) 1206 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0); 1207 upheap (heap, i + HEAP0);
947} 1208}
948 1209
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
963
964/*****************************************************************************/ 1210/*****************************************************************************/
965 1211
1212/* associate signal watchers to a signal signal */
966typedef struct 1213typedef struct
967{ 1214{
1215 EV_ATOMIC_T pending;
1216#if EV_MULTIPLICITY
1217 EV_P;
1218#endif
968 WL head; 1219 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1220} ANSIG;
971 1221
972static ANSIG *signals; 1222static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976
977void inline_size
978signals_init (ANSIG *base, int count)
979{
980 while (count--)
981 {
982 base->head = 0;
983 base->gotsig = 0;
984
985 ++base;
986 }
987}
988 1223
989/*****************************************************************************/ 1224/*****************************************************************************/
990 1225
991void inline_speed 1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
992fd_intern (int fd)
993{
994#ifdef _WIN32
995 int arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif
1001}
1002 1227
1003static void noinline 1228static void noinline
1004evpipe_init (EV_P) 1229evpipe_init (EV_P)
1005{ 1230{
1006 if (!ev_is_active (&pipeev)) 1231 if (!ev_is_active (&pipe_w))
1007 { 1232 {
1008#if EV_USE_EVENTFD 1233# if EV_USE_EVENTFD
1234 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1235 if (evfd < 0 && errno == EINVAL)
1009 if ((evfd = eventfd (0, 0)) >= 0) 1236 evfd = eventfd (0, 0);
1237
1238 if (evfd >= 0)
1010 { 1239 {
1011 evpipe [0] = -1; 1240 evpipe [0] = -1;
1012 fd_intern (evfd); 1241 fd_intern (evfd); /* doing it twice doesn't hurt */
1013 ev_io_set (&pipeev, evfd, EV_READ); 1242 ev_io_set (&pipe_w, evfd, EV_READ);
1014 } 1243 }
1015 else 1244 else
1016#endif 1245# endif
1017 { 1246 {
1018 while (pipe (evpipe)) 1247 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe"); 1248 ev_syserr ("(libev) error creating signal/async pipe");
1020 1249
1021 fd_intern (evpipe [0]); 1250 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]); 1251 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ); 1252 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024 } 1253 }
1025 1254
1026 ev_io_start (EV_A_ &pipeev); 1255 ev_io_start (EV_A_ &pipe_w);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */ 1256 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 } 1257 }
1029} 1258}
1030 1259
1031void inline_size 1260inline_size void
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1261evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{ 1262{
1034 if (!*flag) 1263 if (!*flag)
1035 { 1264 {
1036 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;
1037 1267
1038 *flag = 1; 1268 *flag = 1;
1039 1269
1040#if EV_USE_EVENTFD 1270#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1271 if (evfd >= 0)
… …
1043 uint64_t counter = 1; 1273 uint64_t counter = 1;
1044 write (evfd, &counter, sizeof (uint64_t)); 1274 write (evfd, &counter, sizeof (uint64_t));
1045 } 1275 }
1046 else 1276 else
1047#endif 1277#endif
1048 write (evpipe [1], &old_errno, 1); 1278 write (evpipe [1], &dummy, 1);
1049 1279
1050 errno = old_errno; 1280 errno = old_errno;
1051 } 1281 }
1052} 1282}
1053 1283
1284/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */
1054static void 1286static void
1055pipecb (EV_P_ ev_io *iow, int revents) 1287pipecb (EV_P_ ev_io *iow, int revents)
1056{ 1288{
1289 int i;
1290
1057#if EV_USE_EVENTFD 1291#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1292 if (evfd >= 0)
1059 { 1293 {
1060 uint64_t counter; 1294 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t)); 1295 read (evfd, &counter, sizeof (uint64_t));
… …
1065 { 1299 {
1066 char dummy; 1300 char dummy;
1067 read (evpipe [0], &dummy, 1); 1301 read (evpipe [0], &dummy, 1);
1068 } 1302 }
1069 1303
1070 if (gotsig && ev_is_default_loop (EV_A)) 1304 if (sig_pending)
1071 { 1305 {
1072 int signum; 1306 sig_pending = 0;
1073 gotsig = 0;
1074 1307
1075 for (signum = signalmax; signum--; ) 1308 for (i = EV_NSIG - 1; i--; )
1076 if (signals [signum].gotsig) 1309 if (expect_false (signals [i].pending))
1077 ev_feed_signal_event (EV_A_ signum + 1); 1310 ev_feed_signal_event (EV_A_ i + 1);
1078 } 1311 }
1079 1312
1080#if EV_ASYNC_ENABLE 1313#if EV_ASYNC_ENABLE
1081 if (gotasync) 1314 if (async_pending)
1082 { 1315 {
1083 int i; 1316 async_pending = 0;
1084 gotasync = 0;
1085 1317
1086 for (i = asynccnt; i--; ) 1318 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent) 1319 if (asyncs [i]->sent)
1088 { 1320 {
1089 asyncs [i]->sent = 0; 1321 asyncs [i]->sent = 0;
… …
1097 1329
1098static void 1330static void
1099ev_sighandler (int signum) 1331ev_sighandler (int signum)
1100{ 1332{
1101#if EV_MULTIPLICITY 1333#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct; 1334 EV_P = signals [signum - 1].loop;
1103#endif 1335#endif
1104 1336
1105#if _WIN32 1337#ifdef _WIN32
1106 signal (signum, ev_sighandler); 1338 signal (signum, ev_sighandler);
1107#endif 1339#endif
1108 1340
1109 signals [signum - 1].gotsig = 1; 1341 signals [signum - 1].pending = 1;
1110 evpipe_write (EV_A_ &gotsig); 1342 evpipe_write (EV_A_ &sig_pending);
1111} 1343}
1112 1344
1113void noinline 1345void noinline
1114ev_feed_signal_event (EV_P_ int signum) 1346ev_feed_signal_event (EV_P_ int signum)
1115{ 1347{
1116 WL w; 1348 WL w;
1117 1349
1350 if (expect_false (signum <= 0 || signum > EV_NSIG))
1351 return;
1352
1353 --signum;
1354
1118#if EV_MULTIPLICITY 1355#if EV_MULTIPLICITY
1119 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 */
1120#endif 1357 /* or, likely more useful, feeding a signal nobody is waiting for */
1121 1358
1122 --signum; 1359 if (expect_false (signals [signum].loop != EV_A))
1123
1124 if (signum < 0 || signum >= signalmax)
1125 return; 1360 return;
1361#endif
1126 1362
1127 signals [signum].gotsig = 0; 1363 signals [signum].pending = 0;
1128 1364
1129 for (w = signals [signum].head; w; w = w->next) 1365 for (w = signals [signum].head; w; w = w->next)
1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1366 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131} 1367}
1132 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
1133/*****************************************************************************/ 1391/*****************************************************************************/
1134 1392
1393#if EV_CHILD_ENABLE
1135static WL childs [EV_PID_HASHSIZE]; 1394static WL childs [EV_PID_HASHSIZE];
1136
1137#ifndef _WIN32
1138 1395
1139static ev_signal childev; 1396static ev_signal childev;
1140 1397
1141#ifndef WIFCONTINUED 1398#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0 1399# define WIFCONTINUED(status) 0
1143#endif 1400#endif
1144 1401
1145void inline_speed 1402/* handle a single child status event */
1403inline_speed void
1146child_reap (EV_P_ int chain, int pid, int status) 1404child_reap (EV_P_ int chain, int pid, int status)
1147{ 1405{
1148 ev_child *w; 1406 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1407 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150 1408
1151 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)
1152 { 1410 {
1153 if ((w->pid == pid || !w->pid) 1411 if ((w->pid == pid || !w->pid)
1154 && (!traced || (w->flags & 1))) 1412 && (!traced || (w->flags & 1)))
1155 { 1413 {
1156 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 */
… …
1163 1421
1164#ifndef WCONTINUED 1422#ifndef WCONTINUED
1165# define WCONTINUED 0 1423# define WCONTINUED 0
1166#endif 1424#endif
1167 1425
1426/* called on sigchld etc., calls waitpid */
1168static void 1427static void
1169childcb (EV_P_ ev_signal *sw, int revents) 1428childcb (EV_P_ ev_signal *sw, int revents)
1170{ 1429{
1171 int pid, status; 1430 int pid, status;
1172 1431
… …
1180 /* 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 */
1181 /* 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 */
1182 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1441 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1183 1442
1184 child_reap (EV_A_ pid, pid, status); 1443 child_reap (EV_A_ pid, pid, status);
1185 if (EV_PID_HASHSIZE > 1) 1444 if ((EV_PID_HASHSIZE) > 1)
1186 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 */
1187} 1446}
1188 1447
1189#endif 1448#endif
1190 1449
… …
1253 /* kqueue is borked on everything but netbsd apparently */ 1512 /* kqueue is borked on everything but netbsd apparently */
1254 /* 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 */
1255 flags &= ~EVBACKEND_KQUEUE; 1514 flags &= ~EVBACKEND_KQUEUE;
1256#endif 1515#endif
1257#ifdef __APPLE__ 1516#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation 1517 /* only select works correctly on that "unix-certified" platform */
1259 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) */
1260#endif 1523#endif
1261 1524
1262 return flags; 1525 return flags;
1263} 1526}
1264 1527
… …
1278ev_backend (EV_P) 1541ev_backend (EV_P)
1279{ 1542{
1280 return backend; 1543 return backend;
1281} 1544}
1282 1545
1546#if EV_FEATURE_API
1283unsigned int 1547unsigned int
1284ev_loop_count (EV_P) 1548ev_iteration (EV_P)
1285{ 1549{
1286 return loop_count; 1550 return loop_count;
1287} 1551}
1288 1552
1553unsigned int
1554ev_depth (EV_P)
1555{
1556 return loop_depth;
1557}
1558
1289void 1559void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1560ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1561{
1292 io_blocktime = interval; 1562 io_blocktime = interval;
1293} 1563}
… …
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1566ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{ 1567{
1298 timeout_blocktime = interval; 1568 timeout_blocktime = interval;
1299} 1569}
1300 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 */
1301static void noinline 1596static void noinline
1302loop_init (EV_P_ unsigned int flags) 1597loop_init (EV_P_ unsigned int flags)
1303{ 1598{
1304 if (!backend) 1599 if (!backend)
1305 { 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
1306#if EV_USE_MONOTONIC 1611#if EV_USE_MONOTONIC
1612 if (!have_monotonic)
1307 { 1613 {
1308 struct timespec ts; 1614 struct timespec ts;
1615
1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1616 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310 have_monotonic = 1; 1617 have_monotonic = 1;
1311 } 1618 }
1312#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"));
1313 1631
1314 ev_rt_now = ev_time (); 1632 ev_rt_now = ev_time ();
1315 mn_now = get_clock (); 1633 mn_now = get_clock ();
1316 now_floor = mn_now; 1634 now_floor = mn_now;
1317 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
1318 1639
1319 io_blocktime = 0.; 1640 io_blocktime = 0.;
1320 timeout_blocktime = 0.; 1641 timeout_blocktime = 0.;
1321 backend = 0; 1642 backend = 0;
1322 backend_fd = -1; 1643 backend_fd = -1;
1323 gotasync = 0; 1644 sig_pending = 0;
1645#if EV_ASYNC_ENABLE
1646 async_pending = 0;
1647#endif
1324#if EV_USE_INOTIFY 1648#if EV_USE_INOTIFY
1325 fs_fd = -2; 1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1326#endif 1650#endif
1327 1651#if EV_USE_SIGNALFD
1328 /* pid check not overridable via env */ 1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif 1653#endif
1333
1334 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS"))
1337 flags = atoi (getenv ("LIBEV_FLAGS"));
1338 1654
1339 if (!(flags & 0x0000ffffU)) 1655 if (!(flags & 0x0000ffffU))
1340 flags |= ev_recommended_backends (); 1656 flags |= ev_recommended_backends ();
1341 1657
1342#if EV_USE_PORT 1658#if EV_USE_PORT
… …
1353#endif 1669#endif
1354#if EV_USE_SELECT 1670#if EV_USE_SELECT
1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1671 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356#endif 1672#endif
1357 1673
1674 ev_prepare_init (&pending_w, pendingcb);
1675
1676#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1358 ev_init (&pipeev, pipecb); 1677 ev_init (&pipe_w, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI); 1678 ev_set_priority (&pipe_w, EV_MAXPRI);
1679#endif
1360 } 1680 }
1361} 1681}
1362 1682
1683/* free up a loop structure */
1363static void noinline 1684static void noinline
1364loop_destroy (EV_P) 1685loop_destroy (EV_P)
1365{ 1686{
1366 int i; 1687 int i;
1367 1688
1368 if (ev_is_active (&pipeev)) 1689 if (ev_is_active (&pipe_w))
1369 { 1690 {
1370 ev_ref (EV_A); /* signal watcher */ 1691 /*ev_ref (EV_A);*/
1371 ev_io_stop (EV_A_ &pipeev); 1692 /*ev_io_stop (EV_A_ &pipe_w);*/
1372 1693
1373#if EV_USE_EVENTFD 1694#if EV_USE_EVENTFD
1374 if (evfd >= 0) 1695 if (evfd >= 0)
1375 close (evfd); 1696 close (evfd);
1376#endif 1697#endif
1377 1698
1378 if (evpipe [0] >= 0) 1699 if (evpipe [0] >= 0)
1379 { 1700 {
1380 close (evpipe [0]); 1701 EV_WIN32_CLOSE_FD (evpipe [0]);
1381 close (evpipe [1]); 1702 EV_WIN32_CLOSE_FD (evpipe [1]);
1382 } 1703 }
1383 } 1704 }
1705
1706#if EV_USE_SIGNALFD
1707 if (ev_is_active (&sigfd_w))
1708 close (sigfd);
1709#endif
1384 1710
1385#if EV_USE_INOTIFY 1711#if EV_USE_INOTIFY
1386 if (fs_fd >= 0) 1712 if (fs_fd >= 0)
1387 close (fs_fd); 1713 close (fs_fd);
1388#endif 1714#endif
… …
1412#if EV_IDLE_ENABLE 1738#if EV_IDLE_ENABLE
1413 array_free (idle, [i]); 1739 array_free (idle, [i]);
1414#endif 1740#endif
1415 } 1741 }
1416 1742
1417 ev_free (anfds); anfdmax = 0; 1743 ev_free (anfds); anfds = 0; anfdmax = 0;
1418 1744
1419 /* 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);
1420 array_free (fdchange, EMPTY); 1747 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY); 1748 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE 1749#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY); 1750 array_free (periodic, EMPTY);
1424#endif 1751#endif
… …
1433 1760
1434 backend = 0; 1761 backend = 0;
1435} 1762}
1436 1763
1437#if EV_USE_INOTIFY 1764#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P); 1765inline_size void infy_fork (EV_P);
1439#endif 1766#endif
1440 1767
1441void inline_size 1768inline_size void
1442loop_fork (EV_P) 1769loop_fork (EV_P)
1443{ 1770{
1444#if EV_USE_PORT 1771#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1772 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif 1773#endif
… …
1452#endif 1779#endif
1453#if EV_USE_INOTIFY 1780#if EV_USE_INOTIFY
1454 infy_fork (EV_A); 1781 infy_fork (EV_A);
1455#endif 1782#endif
1456 1783
1457 if (ev_is_active (&pipeev)) 1784 if (ev_is_active (&pipe_w))
1458 { 1785 {
1459 /* this "locks" the handlers against writing to the pipe */ 1786 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */ 1787 /* while we modify the fd vars */
1461 gotsig = 1; 1788 sig_pending = 1;
1462#if EV_ASYNC_ENABLE 1789#if EV_ASYNC_ENABLE
1463 gotasync = 1; 1790 async_pending = 1;
1464#endif 1791#endif
1465 1792
1466 ev_ref (EV_A); 1793 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev); 1794 ev_io_stop (EV_A_ &pipe_w);
1468 1795
1469#if EV_USE_EVENTFD 1796#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1797 if (evfd >= 0)
1471 close (evfd); 1798 close (evfd);
1472#endif 1799#endif
1473 1800
1474 if (evpipe [0] >= 0) 1801 if (evpipe [0] >= 0)
1475 { 1802 {
1476 close (evpipe [0]); 1803 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1804 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1805 }
1479 1806
1807#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1480 evpipe_init (EV_A); 1808 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */ 1809 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ); 1810 pipecb (EV_A_ &pipe_w, EV_READ);
1811#endif
1483 } 1812 }
1484 1813
1485 postfork = 0; 1814 postfork = 0;
1486} 1815}
1487 1816
1488#if EV_MULTIPLICITY 1817#if EV_MULTIPLICITY
1818
1489struct ev_loop * 1819struct ev_loop *
1490ev_loop_new (unsigned int flags) 1820ev_loop_new (unsigned int flags)
1491{ 1821{
1492 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));
1493 1823
1494 memset (loop, 0, sizeof (struct ev_loop)); 1824 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 1825 loop_init (EV_A_ flags);
1497 1826
1498 if (ev_backend (EV_A)) 1827 if (ev_backend (EV_A))
1499 return loop; 1828 return EV_A;
1500 1829
1501 return 0; 1830 return 0;
1502} 1831}
1503 1832
1504void 1833void
… …
1511void 1840void
1512ev_loop_fork (EV_P) 1841ev_loop_fork (EV_P)
1513{ 1842{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1843 postfork = 1; /* must be in line with ev_default_fork */
1515} 1844}
1845#endif /* multiplicity */
1516 1846
1517#if EV_VERIFY 1847#if EV_VERIFY
1518static void 1848static void noinline
1849verify_watcher (EV_P_ W w)
1850{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852
1853 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855}
1856
1857static void noinline
1858verify_heap (EV_P_ ANHE *heap, int N)
1859{
1860 int i;
1861
1862 for (i = HEAP0; i < N + HEAP0; ++i)
1863 {
1864 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1865 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1866 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1867
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 }
1870}
1871
1872static void noinline
1519array_check (W **ws, int cnt) 1873array_verify (EV_P_ W *ws, int cnt)
1520{ 1874{
1521 while (cnt--) 1875 while (cnt--)
1876 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1878 verify_watcher (EV_A_ ws [cnt]);
1879 }
1523} 1880}
1881#endif
1524 1882
1525static void 1883#if EV_FEATURE_API
1884void
1526ev_loop_verify (EV_P) 1885ev_verify (EV_P)
1527{ 1886{
1887#if EV_VERIFY
1528 int i; 1888 int i;
1889 WL w;
1529 1890
1891 assert (activecnt >= -1);
1892
1893 assert (fdchangemax >= fdchangecnt);
1894 for (i = 0; i < fdchangecnt; ++i)
1895 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1896
1897 assert (anfdmax >= 0);
1898 for (i = 0; i < anfdmax; ++i)
1899 for (w = anfds [i].head; w; w = w->next)
1900 {
1901 verify_watcher (EV_A_ (W)w);
1902 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1903 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1904 }
1905
1906 assert (timermax >= timercnt);
1530 checkheap (timers, timercnt); 1907 verify_heap (EV_A_ timers, timercnt);
1908
1531#if EV_PERIODIC_ENABLE 1909#if EV_PERIODIC_ENABLE
1910 assert (periodicmax >= periodiccnt);
1532 checkheap (periodics, periodiccnt); 1911 verify_heap (EV_A_ periodics, periodiccnt);
1533#endif 1912#endif
1534 1913
1914 for (i = NUMPRI; i--; )
1915 {
1916 assert (pendingmax [i] >= pendingcnt [i]);
1535#if EV_IDLE_ENABLE 1917#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; ) 1918 assert (idleall >= 0);
1919 assert (idlemax [i] >= idlecnt [i]);
1537 array_check ((W **)idles [i], idlecnt [i]); 1920 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538#endif 1921#endif
1922 }
1923
1539#if EV_FORK_ENABLE 1924#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt);
1540 array_check ((W **)forks, forkcnt); 1926 array_verify (EV_A_ (W *)forks, forkcnt);
1541#endif 1927#endif
1542 array_check ((W **)prepares, preparecnt); 1928
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE 1929#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1931 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif
1933
1934#if EV_PREPARE_ENABLE
1935 assert (preparemax >= preparecnt);
1936 array_verify (EV_A_ (W *)prepares, preparecnt);
1937#endif
1938
1939#if EV_CHECK_ENABLE
1940 assert (checkmax >= checkcnt);
1941 array_verify (EV_A_ (W *)checks, checkcnt);
1942#endif
1943
1944# if 0
1945#if EV_CHILD_ENABLE
1946 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1947 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1948#endif
1546#endif 1949# endif
1547}
1548#endif 1950#endif
1549 1951}
1550#endif 1952#endif
1551 1953
1552#if EV_MULTIPLICITY 1954#if EV_MULTIPLICITY
1553struct ev_loop * 1955struct ev_loop *
1554ev_default_loop_init (unsigned int flags) 1956ev_default_loop_init (unsigned int flags)
… …
1558#endif 1960#endif
1559{ 1961{
1560 if (!ev_default_loop_ptr) 1962 if (!ev_default_loop_ptr)
1561 { 1963 {
1562#if EV_MULTIPLICITY 1964#if EV_MULTIPLICITY
1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1965 EV_P = ev_default_loop_ptr = &default_loop_struct;
1564#else 1966#else
1565 ev_default_loop_ptr = 1; 1967 ev_default_loop_ptr = 1;
1566#endif 1968#endif
1567 1969
1568 loop_init (EV_A_ flags); 1970 loop_init (EV_A_ flags);
1569 1971
1570 if (ev_backend (EV_A)) 1972 if (ev_backend (EV_A))
1571 { 1973 {
1572#ifndef _WIN32 1974#if EV_CHILD_ENABLE
1573 ev_signal_init (&childev, childcb, SIGCHLD); 1975 ev_signal_init (&childev, childcb, SIGCHLD);
1574 ev_set_priority (&childev, EV_MAXPRI); 1976 ev_set_priority (&childev, EV_MAXPRI);
1575 ev_signal_start (EV_A_ &childev); 1977 ev_signal_start (EV_A_ &childev);
1576 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1978 ev_unref (EV_A); /* child watcher should not keep loop alive */
1577#endif 1979#endif
… …
1585 1987
1586void 1988void
1587ev_default_destroy (void) 1989ev_default_destroy (void)
1588{ 1990{
1589#if EV_MULTIPLICITY 1991#if EV_MULTIPLICITY
1590 struct ev_loop *loop = ev_default_loop_ptr; 1992 EV_P = ev_default_loop_ptr;
1591#endif 1993#endif
1592 1994
1593#ifndef _WIN32 1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1594 ev_ref (EV_A); /* child watcher */ 1998 ev_ref (EV_A); /* child watcher */
1595 ev_signal_stop (EV_A_ &childev); 1999 ev_signal_stop (EV_A_ &childev);
1596#endif 2000#endif
1597 2001
1598 loop_destroy (EV_A); 2002 loop_destroy (EV_A);
… …
1600 2004
1601void 2005void
1602ev_default_fork (void) 2006ev_default_fork (void)
1603{ 2007{
1604#if EV_MULTIPLICITY 2008#if EV_MULTIPLICITY
1605 struct ev_loop *loop = ev_default_loop_ptr; 2009 EV_P = ev_default_loop_ptr;
1606#endif 2010#endif
1607 2011
1608 if (backend)
1609 postfork = 1; /* must be in line with ev_loop_fork */ 2012 postfork = 1; /* must be in line with ev_loop_fork */
1610} 2013}
1611 2014
1612/*****************************************************************************/ 2015/*****************************************************************************/
1613 2016
1614void 2017void
1615ev_invoke (EV_P_ void *w, int revents) 2018ev_invoke (EV_P_ void *w, int revents)
1616{ 2019{
1617 EV_CB_INVOKE ((W)w, revents); 2020 EV_CB_INVOKE ((W)w, revents);
1618} 2021}
1619 2022
1620void inline_speed 2023unsigned int
1621call_pending (EV_P) 2024ev_pending_count (EV_P)
1622{ 2025{
1623 int pri; 2026 int pri;
2027 unsigned int count = 0;
1624 2028
1625 EV_FREQUENT_CHECK; 2029 for (pri = NUMPRI; pri--; )
2030 count += pendingcnt [pri];
2031
2032 return count;
2033}
2034
2035void noinline
2036ev_invoke_pending (EV_P)
2037{
2038 int pri;
1626 2039
1627 for (pri = NUMPRI; pri--; ) 2040 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2041 while (pendingcnt [pri])
1629 { 2042 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2044
1632 if (expect_true (p->w))
1633 {
1634 /*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 */
1635 2047
1636 p->w->pending = 0; 2048 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2049 EV_CB_INVOKE (p->w, p->events);
1638 } 2050 EV_FREQUENT_CHECK;
1639 } 2051 }
1640
1641 EV_FREQUENT_CHECK;
1642} 2052}
1643 2053
1644#if EV_IDLE_ENABLE 2054#if EV_IDLE_ENABLE
1645void inline_size 2055/* make idle watchers pending. this handles the "call-idle */
2056/* only when higher priorities are idle" logic */
2057inline_size void
1646idle_reify (EV_P) 2058idle_reify (EV_P)
1647{ 2059{
1648 if (expect_false (idleall)) 2060 if (expect_false (idleall))
1649 { 2061 {
1650 int pri; 2062 int pri;
… …
1662 } 2074 }
1663 } 2075 }
1664} 2076}
1665#endif 2077#endif
1666 2078
1667void inline_size 2079/* make timers pending */
2080inline_size void
1668timers_reify (EV_P) 2081timers_reify (EV_P)
1669{ 2082{
1670 EV_FREQUENT_CHECK; 2083 EV_FREQUENT_CHECK;
1671 2084
1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2085 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673 { 2086 {
1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2087 do
1675
1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678 /* first reschedule or stop timer */
1679 if (w->repeat)
1680 { 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 {
1681 ev_at (w) += w->repeat; 2096 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now) 2097 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now; 2098 ev_at (w) = mn_now;
1684 2099
1685 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.));
1686 2101
1687 ANHE_at_cache (timers [HEAP0]); 2102 ANHE_at_cache (timers [HEAP0]);
1688 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);
1689 } 2110 }
1690 else 2111 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692 2112
1693 EV_FREQUENT_CHECK; 2113 feed_reverse_done (EV_A_ EV_TIMER);
1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1695 } 2114 }
1696} 2115}
1697 2116
1698#if EV_PERIODIC_ENABLE 2117#if EV_PERIODIC_ENABLE
1699void inline_size 2118/* make periodics pending */
2119inline_size void
1700periodics_reify (EV_P) 2120periodics_reify (EV_P)
1701{ 2121{
1702 EV_FREQUENT_CHECK; 2122 EV_FREQUENT_CHECK;
2123
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2125 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2126 int feed_count = 0;
1706 2127
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2128 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 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 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2137 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2138
1714 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));
1715 2140
1716 ANHE_at_cache (periodics [HEAP0]); 2141 ANHE_at_cache (periodics [HEAP0]);
1717 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
1718 EV_FREQUENT_CHECK; 2166 EV_FREQUENT_CHECK;
2167 feed_reverse (EV_A_ (W)w);
1719 } 2168 }
1720 else if (w->interval) 2169 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728 2170
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
1738 }
1739 else
1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2171 feed_reverse_done (EV_A_ EV_PERIODIC);
1744 } 2172 }
1745} 2173}
1746 2174
2175/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747static void noinline 2177static void noinline
1748periodics_reschedule (EV_P) 2178periodics_reschedule (EV_P)
1749{ 2179{
1750 int i; 2180 int i;
1751 2181
… …
1764 2194
1765 reheap (periodics, periodiccnt); 2195 reheap (periodics, periodiccnt);
1766} 2196}
1767#endif 2197#endif
1768 2198
1769void 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
1770time_update (EV_P_ ev_tstamp max_block) 2216time_update (EV_P_ ev_tstamp max_block)
1771{ 2217{
1772 int i;
1773
1774#if EV_USE_MONOTONIC 2218#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic)) 2219 if (expect_true (have_monotonic))
1776 { 2220 {
2221 int i;
1777 ev_tstamp odiff = rtmn_diff; 2222 ev_tstamp odiff = rtmn_diff;
1778 2223
1779 mn_now = get_clock (); 2224 mn_now = get_clock ();
1780 2225
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2226 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1807 ev_rt_now = ev_time (); 2252 ev_rt_now = ev_time ();
1808 mn_now = get_clock (); 2253 mn_now = get_clock ();
1809 now_floor = mn_now; 2254 now_floor = mn_now;
1810 } 2255 }
1811 2256
2257 /* no timer adjustment, as the monotonic clock doesn't jump */
2258 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812# if EV_PERIODIC_ENABLE 2259# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A); 2260 periodics_reschedule (EV_A);
1814# endif 2261# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 } 2262 }
1818 else 2263 else
1819#endif 2264#endif
1820 { 2265 {
1821 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1822 2267
1823 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))
1824 { 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);
1825#if EV_PERIODIC_ENABLE 2272#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A); 2273 periodics_reschedule (EV_A);
1827#endif 2274#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1835 } 2275 }
1836 2276
1837 mn_now = ev_rt_now; 2277 mn_now = ev_rt_now;
1838 } 2278 }
1839} 2279}
1840 2280
1841void 2281void
1842ev_ref (EV_P)
1843{
1844 ++activecnt;
1845}
1846
1847void
1848ev_unref (EV_P)
1849{
1850 --activecnt;
1851}
1852
1853static int loop_done;
1854
1855void
1856ev_loop (EV_P_ int flags) 2282ev_loop (EV_P_ int flags)
1857{ 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
1858 loop_done = EVUNLOOP_CANCEL; 2290 loop_done = EVUNLOOP_CANCEL;
1859 2291
1860 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 */
1861 2293
1862 do 2294 do
1863 { 2295 {
2296#if EV_VERIFY >= 2
2297 ev_verify (EV_A);
2298#endif
2299
1864#ifndef _WIN32 2300#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */ 2301 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid)) 2302 if (expect_false (getpid () != curpid))
1867 { 2303 {
1868 curpid = getpid (); 2304 curpid = getpid ();
… …
1874 /* we might have forked, so queue fork handlers */ 2310 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork)) 2311 if (expect_false (postfork))
1876 if (forkcnt) 2312 if (forkcnt)
1877 { 2313 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2314 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
1880 } 2316 }
1881#endif 2317#endif
1882 2318
2319#if EV_PREPARE_ENABLE
1883 /* queue prepare watchers (and execute them) */ 2320 /* queue prepare watchers (and execute them) */
1884 if (expect_false (preparecnt)) 2321 if (expect_false (preparecnt))
1885 { 2322 {
1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2323 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887 call_pending (EV_A); 2324 EV_INVOKE_PENDING;
1888 } 2325 }
2326#endif
1889 2327
1890 if (expect_false (!activecnt)) 2328 if (expect_false (loop_done))
1891 break; 2329 break;
1892 2330
1893 /* we might have forked, so reify kernel state if necessary */ 2331 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork)) 2332 if (expect_false (postfork))
1895 loop_fork (EV_A); 2333 loop_fork (EV_A);
… …
1902 ev_tstamp waittime = 0.; 2340 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.; 2341 ev_tstamp sleeptime = 0.;
1904 2342
1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906 { 2344 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
1907 /* update time to cancel out callback processing overhead */ 2348 /* update time to cancel out callback processing overhead */
1908 time_update (EV_A_ 1e100); 2349 time_update (EV_A_ 1e100);
1909 2350
1910 waittime = MAX_BLOCKTIME; 2351 waittime = MAX_BLOCKTIME;
1911 2352
… …
1921 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;
1922 if (waittime > to) waittime = to; 2363 if (waittime > to) waittime = to;
1923 } 2364 }
1924#endif 2365#endif
1925 2366
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */
1926 if (expect_false (waittime < timeout_blocktime)) 2368 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime; 2369 waittime = timeout_blocktime;
1928 2370
1929 sleeptime = waittime - backend_fudge; 2371 /* extra check because io_blocktime is commonly 0 */
1930
1931 if (expect_true (sleeptime > io_blocktime)) 2372 if (expect_false (io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 { 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 {
1936 ev_sleep (sleeptime); 2381 ev_sleep (sleeptime);
1937 waittime -= sleeptime; 2382 waittime -= sleeptime;
2383 }
1938 } 2384 }
1939 } 2385 }
1940 2386
2387#if EV_FEATURE_API
1941 ++loop_count; 2388 ++loop_count;
2389#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1942 backend_poll (EV_A_ waittime); 2391 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1943 2393
1944 /* update ev_rt_now, do magic */ 2394 /* update ev_rt_now, do magic */
1945 time_update (EV_A_ waittime + sleeptime); 2395 time_update (EV_A_ waittime + sleeptime);
1946 } 2396 }
1947 2397
… …
1954#if EV_IDLE_ENABLE 2404#if EV_IDLE_ENABLE
1955 /* queue idle watchers unless other events are pending */ 2405 /* queue idle watchers unless other events are pending */
1956 idle_reify (EV_A); 2406 idle_reify (EV_A);
1957#endif 2407#endif
1958 2408
2409#if EV_CHECK_ENABLE
1959 /* queue check watchers, to be executed first */ 2410 /* queue check watchers, to be executed first */
1960 if (expect_false (checkcnt)) 2411 if (expect_false (checkcnt))
1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2412 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2413#endif
1962 2414
1963 call_pending (EV_A); 2415 EV_INVOKE_PENDING;
1964 } 2416 }
1965 while (expect_true ( 2417 while (expect_true (
1966 activecnt 2418 activecnt
1967 && !loop_done 2419 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 )); 2421 ));
1970 2422
1971 if (loop_done == EVUNLOOP_ONE) 2423 if (loop_done == EVUNLOOP_ONE)
1972 loop_done = EVUNLOOP_CANCEL; 2424 loop_done = EVUNLOOP_CANCEL;
2425
2426#if EV_FEATURE_API
2427 --loop_depth;
2428#endif
1973} 2429}
1974 2430
1975void 2431void
1976ev_unloop (EV_P_ int how) 2432ev_unloop (EV_P_ int how)
1977{ 2433{
1978 loop_done = how; 2434 loop_done = how;
1979} 2435}
1980 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
1981/*****************************************************************************/ 2474/*****************************************************************************/
2475/* singly-linked list management, used when the expected list length is short */
1982 2476
1983void inline_size 2477inline_size void
1984wlist_add (WL *head, WL elem) 2478wlist_add (WL *head, WL elem)
1985{ 2479{
1986 elem->next = *head; 2480 elem->next = *head;
1987 *head = elem; 2481 *head = elem;
1988} 2482}
1989 2483
1990void inline_size 2484inline_size void
1991wlist_del (WL *head, WL elem) 2485wlist_del (WL *head, WL elem)
1992{ 2486{
1993 while (*head) 2487 while (*head)
1994 { 2488 {
1995 if (*head == elem) 2489 if (expect_true (*head == elem))
1996 { 2490 {
1997 *head = elem->next; 2491 *head = elem->next;
1998 return; 2492 break;
1999 } 2493 }
2000 2494
2001 head = &(*head)->next; 2495 head = &(*head)->next;
2002 } 2496 }
2003} 2497}
2004 2498
2005void inline_speed 2499/* internal, faster, version of ev_clear_pending */
2500inline_speed void
2006clear_pending (EV_P_ W w) 2501clear_pending (EV_P_ W w)
2007{ 2502{
2008 if (w->pending) 2503 if (w->pending)
2009 { 2504 {
2010 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2505 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011 w->pending = 0; 2506 w->pending = 0;
2012 } 2507 }
2013} 2508}
2014 2509
2015int 2510int
… …
2019 int pending = w_->pending; 2514 int pending = w_->pending;
2020 2515
2021 if (expect_true (pending)) 2516 if (expect_true (pending))
2022 { 2517 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2518 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2519 p->w = (W)&pending_w;
2024 w_->pending = 0; 2520 w_->pending = 0;
2025 p->w = 0;
2026 return p->events; 2521 return p->events;
2027 } 2522 }
2028 else 2523 else
2029 return 0; 2524 return 0;
2030} 2525}
2031 2526
2032void inline_size 2527inline_size void
2033pri_adjust (EV_P_ W w) 2528pri_adjust (EV_P_ W w)
2034{ 2529{
2035 int pri = w->priority; 2530 int pri = ev_priority (w);
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2531 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2532 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri; 2533 ev_set_priority (w, pri);
2039} 2534}
2040 2535
2041void inline_speed 2536inline_speed void
2042ev_start (EV_P_ W w, int active) 2537ev_start (EV_P_ W w, int active)
2043{ 2538{
2044 pri_adjust (EV_A_ w); 2539 pri_adjust (EV_A_ w);
2045 w->active = active; 2540 w->active = active;
2046 ev_ref (EV_A); 2541 ev_ref (EV_A);
2047} 2542}
2048 2543
2049void inline_size 2544inline_size void
2050ev_stop (EV_P_ W w) 2545ev_stop (EV_P_ W w)
2051{ 2546{
2052 ev_unref (EV_A); 2547 ev_unref (EV_A);
2053 w->active = 0; 2548 w->active = 0;
2054} 2549}
… …
2061 int fd = w->fd; 2556 int fd = w->fd;
2062 2557
2063 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
2064 return; 2559 return;
2065 2560
2066 assert (("ev_io_start called with negative fd", fd >= 0)); 2561 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2562 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067 2563
2068 EV_FREQUENT_CHECK; 2564 EV_FREQUENT_CHECK;
2069 2565
2070 ev_start (EV_A_ (W)w, 1); 2566 ev_start (EV_A_ (W)w, 1);
2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2567 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072 wlist_add (&anfds[fd].head, (WL)w); 2568 wlist_add (&anfds[fd].head, (WL)w);
2073 2569
2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2570 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075 w->events &= ~EV_IOFDSET; 2571 w->events &= ~EV__IOFDSET;
2076 2572
2077 EV_FREQUENT_CHECK; 2573 EV_FREQUENT_CHECK;
2078} 2574}
2079 2575
2080void noinline 2576void noinline
… …
2082{ 2578{
2083 clear_pending (EV_A_ (W)w); 2579 clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w))) 2580 if (expect_false (!ev_is_active (w)))
2085 return; 2581 return;
2086 2582
2087 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));
2088 2584
2089 EV_FREQUENT_CHECK; 2585 EV_FREQUENT_CHECK;
2090 2586
2091 wlist_del (&anfds[w->fd].head, (WL)w); 2587 wlist_del (&anfds[w->fd].head, (WL)w);
2092 ev_stop (EV_A_ (W)w); 2588 ev_stop (EV_A_ (W)w);
… …
2102 if (expect_false (ev_is_active (w))) 2598 if (expect_false (ev_is_active (w)))
2103 return; 2599 return;
2104 2600
2105 ev_at (w) += mn_now; 2601 ev_at (w) += mn_now;
2106 2602
2107 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.));
2108 2604
2109 EV_FREQUENT_CHECK; 2605 EV_FREQUENT_CHECK;
2110 2606
2111 ++timercnt; 2607 ++timercnt;
2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2608 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2115 ANHE_at_cache (timers [ev_active (w)]); 2611 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w)); 2612 upheap (timers, ev_active (w));
2117 2613
2118 EV_FREQUENT_CHECK; 2614 EV_FREQUENT_CHECK;
2119 2615
2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2616 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121} 2617}
2122 2618
2123void noinline 2619void noinline
2124ev_timer_stop (EV_P_ ev_timer *w) 2620ev_timer_stop (EV_P_ ev_timer *w)
2125{ 2621{
… …
2130 EV_FREQUENT_CHECK; 2626 EV_FREQUENT_CHECK;
2131 2627
2132 { 2628 {
2133 int active = ev_active (w); 2629 int active = ev_active (w);
2134 2630
2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2631 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136 2632
2137 --timercnt; 2633 --timercnt;
2138 2634
2139 if (expect_true (active < timercnt + HEAP0)) 2635 if (expect_true (active < timercnt + HEAP0))
2140 { 2636 {
2141 timers [active] = timers [timercnt + HEAP0]; 2637 timers [active] = timers [timercnt + HEAP0];
2142 adjustheap (timers, timercnt, active); 2638 adjustheap (timers, timercnt, active);
2143 } 2639 }
2144 } 2640 }
2145 2641
2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now; 2642 ev_at (w) -= mn_now;
2149 2643
2150 ev_stop (EV_A_ (W)w); 2644 ev_stop (EV_A_ (W)w);
2645
2646 EV_FREQUENT_CHECK;
2151} 2647}
2152 2648
2153void noinline 2649void noinline
2154ev_timer_again (EV_P_ ev_timer *w) 2650ev_timer_again (EV_P_ ev_timer *w)
2155{ 2651{
… …
2173 } 2669 }
2174 2670
2175 EV_FREQUENT_CHECK; 2671 EV_FREQUENT_CHECK;
2176} 2672}
2177 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
2178#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
2179void noinline 2681void noinline
2180ev_periodic_start (EV_P_ ev_periodic *w) 2682ev_periodic_start (EV_P_ ev_periodic *w)
2181{ 2683{
2182 if (expect_false (ev_is_active (w))) 2684 if (expect_false (ev_is_active (w)))
… …
2184 2686
2185 if (w->reschedule_cb) 2687 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval) 2689 else if (w->interval)
2188 { 2690 {
2189 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.));
2190 /* 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 */
2191 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;
2192 } 2694 }
2193 else 2695 else
2194 ev_at (w) = w->offset; 2696 ev_at (w) = w->offset;
… …
2202 ANHE_at_cache (periodics [ev_active (w)]); 2704 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w)); 2705 upheap (periodics, ev_active (w));
2204 2706
2205 EV_FREQUENT_CHECK; 2707 EV_FREQUENT_CHECK;
2206 2708
2207 /*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));*/
2208} 2710}
2209 2711
2210void noinline 2712void noinline
2211ev_periodic_stop (EV_P_ ev_periodic *w) 2713ev_periodic_stop (EV_P_ ev_periodic *w)
2212{ 2714{
… …
2217 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2218 2720
2219 { 2721 {
2220 int active = ev_active (w); 2722 int active = ev_active (w);
2221 2723
2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2724 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223 2725
2224 --periodiccnt; 2726 --periodiccnt;
2225 2727
2226 if (expect_true (active < periodiccnt + HEAP0)) 2728 if (expect_true (active < periodiccnt + HEAP0))
2227 { 2729 {
2228 periodics [active] = periodics [periodiccnt + HEAP0]; 2730 periodics [active] = periodics [periodiccnt + HEAP0];
2229 adjustheap (periodics, periodiccnt, active); 2731 adjustheap (periodics, periodiccnt, active);
2230 } 2732 }
2231 } 2733 }
2232 2734
2233 EV_FREQUENT_CHECK;
2234
2235 ev_stop (EV_A_ (W)w); 2735 ev_stop (EV_A_ (W)w);
2736
2737 EV_FREQUENT_CHECK;
2236} 2738}
2237 2739
2238void noinline 2740void noinline
2239ev_periodic_again (EV_P_ ev_periodic *w) 2741ev_periodic_again (EV_P_ ev_periodic *w)
2240{ 2742{
… …
2246 2748
2247#ifndef SA_RESTART 2749#ifndef SA_RESTART
2248# define SA_RESTART 0 2750# define SA_RESTART 0
2249#endif 2751#endif
2250 2752
2753#if EV_SIGNAL_ENABLE
2754
2251void noinline 2755void noinline
2252ev_signal_start (EV_P_ ev_signal *w) 2756ev_signal_start (EV_P_ ev_signal *w)
2253{ 2757{
2254#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif
2257 if (expect_false (ev_is_active (w))) 2758 if (expect_false (ev_is_active (w)))
2258 return; 2759 return;
2259 2760
2260 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));
2261 2762
2262 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));
2263 2766
2264 EV_FREQUENT_CHECK; 2767 signals [w->signum - 1].loop = EV_A;
2768#endif
2265 2769
2770 EV_FREQUENT_CHECK;
2771
2772#if EV_USE_SIGNALFD
2773 if (sigfd == -2)
2266 { 2774 {
2267#ifndef _WIN32 2775 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2268 sigset_t full, prev; 2776 if (sigfd < 0 && errno == EINVAL)
2269 sigfillset (&full); 2777 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272 2778
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2779 if (sigfd >= 0)
2780 {
2781 fd_intern (sigfd); /* doing it twice will not hurt */
2274 2782
2275#ifndef _WIN32 2783 sigemptyset (&sigfd_set);
2276 sigprocmask (SIG_SETMASK, &prev, 0); 2784
2277#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 }
2278 } 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
2279 2801
2280 ev_start (EV_A_ (W)w, 1); 2802 ev_start (EV_A_ (W)w, 1);
2281 wlist_add (&signals [w->signum - 1].head, (WL)w); 2803 wlist_add (&signals [w->signum - 1].head, (WL)w);
2282 2804
2283 if (!((WL)w)->next) 2805 if (!((WL)w)->next)
2806# if EV_USE_SIGNALFD
2807 if (sigfd < 0) /*TODO*/
2808# endif
2284 { 2809 {
2285#if _WIN32 2810# ifdef _WIN32
2811 evpipe_init (EV_A);
2812
2286 signal (w->signum, ev_sighandler); 2813 signal (w->signum, ev_sighandler);
2287#else 2814# else
2288 struct sigaction sa; 2815 struct sigaction sa;
2816
2817 evpipe_init (EV_A);
2818
2289 sa.sa_handler = ev_sighandler; 2819 sa.sa_handler = ev_sighandler;
2290 sigfillset (&sa.sa_mask); 2820 sigfillset (&sa.sa_mask);
2291 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 */
2292 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);
2293#endif 2827#endif
2294 } 2828 }
2295 2829
2296 EV_FREQUENT_CHECK; 2830 EV_FREQUENT_CHECK;
2297} 2831}
2298 2832
2299void noinline 2833void noinline
… …
2307 2841
2308 wlist_del (&signals [w->signum - 1].head, (WL)w); 2842 wlist_del (&signals [w->signum - 1].head, (WL)w);
2309 ev_stop (EV_A_ (W)w); 2843 ev_stop (EV_A_ (W)w);
2310 2844
2311 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
2312 signal (w->signum, SIG_DFL); 2864 signal (w->signum, SIG_DFL);
2865 }
2313 2866
2314 EV_FREQUENT_CHECK; 2867 EV_FREQUENT_CHECK;
2315} 2868}
2869
2870#endif
2871
2872#if EV_CHILD_ENABLE
2316 2873
2317void 2874void
2318ev_child_start (EV_P_ ev_child *w) 2875ev_child_start (EV_P_ ev_child *w)
2319{ 2876{
2320#if EV_MULTIPLICITY 2877#if EV_MULTIPLICITY
2321 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));
2322#endif 2879#endif
2323 if (expect_false (ev_is_active (w))) 2880 if (expect_false (ev_is_active (w)))
2324 return; 2881 return;
2325 2882
2326 EV_FREQUENT_CHECK; 2883 EV_FREQUENT_CHECK;
2327 2884
2328 ev_start (EV_A_ (W)w, 1); 2885 ev_start (EV_A_ (W)w, 1);
2329 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2886 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2330 2887
2331 EV_FREQUENT_CHECK; 2888 EV_FREQUENT_CHECK;
2332} 2889}
2333 2890
2334void 2891void
… …
2338 if (expect_false (!ev_is_active (w))) 2895 if (expect_false (!ev_is_active (w)))
2339 return; 2896 return;
2340 2897
2341 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2342 2899
2343 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2344 ev_stop (EV_A_ (W)w); 2901 ev_stop (EV_A_ (W)w);
2345 2902
2346 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2347} 2904}
2905
2906#endif
2348 2907
2349#if EV_STAT_ENABLE 2908#if EV_STAT_ENABLE
2350 2909
2351# ifdef _WIN32 2910# ifdef _WIN32
2352# undef lstat 2911# undef lstat
2353# define lstat(a,b) _stati64 (a,b) 2912# define lstat(a,b) _stati64 (a,b)
2354# endif 2913# endif
2355 2914
2356#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 */
2357#define MIN_STAT_INTERVAL 0.1074891 2917#define MIN_STAT_INTERVAL 0.1074891
2358 2918
2359static 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);
2360 2920
2361#if EV_USE_INOTIFY 2921#if EV_USE_INOTIFY
2362# 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)
2363 2925
2364static void noinline 2926static void noinline
2365infy_add (EV_P_ ev_stat *w) 2927infy_add (EV_P_ ev_stat *w)
2366{ 2928{
2367 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);
2368 2930
2369 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 */
2370 { 2951 }
2371 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;
2372 2956
2373 /* monitor some parent directory for speedup hints */ 2957 /* if path is not there, monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2958 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2375 /* but an efficiency issue only */ 2959 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2960 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 { 2961 {
2378 char path [4096]; 2962 char path [4096];
2379 strcpy (path, w->path); 2963 strcpy (path, w->path);
… …
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2967 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2968 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385 2969
2386 char *pend = strrchr (path, '/'); 2970 char *pend = strrchr (path, '/');
2387 2971
2388 if (!pend) 2972 if (!pend || pend == path)
2389 break; /* whoops, no '/', complain to your admin */ 2973 break;
2390 2974
2391 *pend = 0; 2975 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask); 2976 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 } 2977 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 } 2979 }
2396 } 2980 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399 2981
2400 if (w->wd >= 0) 2982 if (w->wd >= 0)
2401 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);
2402} 2989}
2403 2990
2404static void noinline 2991static void noinline
2405infy_del (EV_P_ ev_stat *w) 2992infy_del (EV_P_ ev_stat *w)
2406{ 2993{
… …
2409 2996
2410 if (wd < 0) 2997 if (wd < 0)
2411 return; 2998 return;
2412 2999
2413 w->wd = -2; 3000 w->wd = -2;
2414 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3001 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2415 wlist_del (&fs_hash [slot].head, (WL)w); 3002 wlist_del (&fs_hash [slot].head, (WL)w);
2416 3003
2417 /* remove this watcher, if others are watching it, they will rearm */ 3004 /* remove this watcher, if others are watching it, they will rearm */
2418 inotify_rm_watch (fs_fd, wd); 3005 inotify_rm_watch (fs_fd, wd);
2419} 3006}
2420 3007
2421static void noinline 3008static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{ 3010{
2424 if (slot < 0) 3011 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */ 3012 /* overflow, need to check for all hash slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2427 infy_wd (EV_A_ slot, wd, ev); 3014 infy_wd (EV_A_ slot, wd, ev);
2428 else 3015 else
2429 { 3016 {
2430 WL w_; 3017 WL w_;
2431 3018
2432 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3019 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2433 { 3020 {
2434 ev_stat *w = (ev_stat *)w_; 3021 ev_stat *w = (ev_stat *)w_;
2435 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 */
2436 3023
2437 if (w->wd == wd || wd == -1) 3024 if (w->wd == wd || wd == -1)
2438 { 3025 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3026 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 { 3027 {
3028 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2441 w->wd = -1; 3029 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */ 3030 infy_add (EV_A_ w); /* re-add, no matter what */
2443 } 3031 }
2444 3032
2445 stat_timer_cb (EV_A_ &w->timer, 0); 3033 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2450 3038
2451static void 3039static void
2452infy_cb (EV_P_ ev_io *w, int revents) 3040infy_cb (EV_P_ ev_io *w, int revents)
2453{ 3041{
2454 char buf [EV_INOTIFY_BUFSIZE]; 3042 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs; 3043 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf)); 3044 int len = read (fs_fd, buf, sizeof (buf));
2458 3045
2459 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);
2460 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 }
2461} 3052}
2462 3053
2463void inline_size 3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
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{
3089 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */
3092 if (ev_linux_version () < 0x020619)
3093 return;
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
2464infy_init (EV_P) 3110infy_init (EV_P)
2465{ 3111{
2466 if (fs_fd != -2) 3112 if (fs_fd != -2)
2467 return; 3113 return;
2468 3114
3115 fs_fd = -1;
3116
3117 ev_check_2625 (EV_A);
3118
2469 fs_fd = inotify_init (); 3119 fs_fd = infy_newfd ();
2470 3120
2471 if (fs_fd >= 0) 3121 if (fs_fd >= 0)
2472 { 3122 {
3123 fd_intern (fs_fd);
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3124 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI); 3125 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w); 3126 ev_io_start (EV_A_ &fs_w);
3127 ev_unref (EV_A);
2476 } 3128 }
2477} 3129}
2478 3130
2479void inline_size 3131inline_size void
2480infy_fork (EV_P) 3132infy_fork (EV_P)
2481{ 3133{
2482 int slot; 3134 int slot;
2483 3135
2484 if (fs_fd < 0) 3136 if (fs_fd < 0)
2485 return; 3137 return;
2486 3138
3139 ev_ref (EV_A);
3140 ev_io_stop (EV_A_ &fs_w);
2487 close (fs_fd); 3141 close (fs_fd);
2488 fs_fd = inotify_init (); 3142 fs_fd = infy_newfd ();
2489 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
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3152 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2491 { 3153 {
2492 WL w_ = fs_hash [slot].head; 3154 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0; 3155 fs_hash [slot].head = 0;
2494 3156
2495 while (w_) 3157 while (w_)
… …
2500 w->wd = -1; 3162 w->wd = -1;
2501 3163
2502 if (fs_fd >= 0) 3164 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3165 infy_add (EV_A_ w); /* re-add, no matter what */
2504 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);
2505 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 }
2506 } 3173 }
2507
2508 } 3174 }
2509} 3175}
2510 3176
3177#endif
3178
3179#ifdef _WIN32
3180# define EV_LSTAT(p,b) _stati64 (p, b)
3181#else
3182# define EV_LSTAT(p,b) lstat (p, b)
2511#endif 3183#endif
2512 3184
2513void 3185void
2514ev_stat_stat (EV_P_ ev_stat *w) 3186ev_stat_stat (EV_P_ ev_stat *w)
2515{ 3187{
… …
2522static void noinline 3194static void noinline
2523stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3195stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524{ 3196{
2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3197 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526 3198
2527 /* we copy this here each the time so that */ 3199 ev_statdata prev = w->attr;
2528 /* prev has the old value when the callback gets invoked */
2529 w->prev = w->attr;
2530 ev_stat_stat (EV_A_ w); 3200 ev_stat_stat (EV_A_ w);
2531 3201
2532 /* 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 */
2533 if ( 3203 if (
2534 w->prev.st_dev != w->attr.st_dev 3204 prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino 3205 || prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode 3206 || prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink 3207 || prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid 3208 || prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid 3209 || prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev 3210 || prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size 3211 || prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime 3212 || prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime 3213 || prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime 3214 || prev.st_ctime != w->attr.st_ctime
2545 ) { 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
2546 #if EV_USE_INOTIFY 3221 #if EV_USE_INOTIFY
3222 if (fs_fd >= 0)
3223 {
2547 infy_del (EV_A_ w); 3224 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w); 3225 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */ 3226 ev_stat_stat (EV_A_ w); /* avoid race... */
3227 }
2550 #endif 3228 #endif
2551 3229
2552 ev_feed_event (EV_A_ w, EV_STAT); 3230 ev_feed_event (EV_A_ w, EV_STAT);
2553 } 3231 }
2554} 3232}
… …
2557ev_stat_start (EV_P_ ev_stat *w) 3235ev_stat_start (EV_P_ ev_stat *w)
2558{ 3236{
2559 if (expect_false (ev_is_active (w))) 3237 if (expect_false (ev_is_active (w)))
2560 return; 3238 return;
2561 3239
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w); 3240 ev_stat_stat (EV_A_ w);
2567 3241
3242 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568 if (w->interval < MIN_STAT_INTERVAL) 3243 w->interval = MIN_STAT_INTERVAL;
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570 3244
2571 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);
2572 ev_set_priority (&w->timer, ev_priority (w)); 3246 ev_set_priority (&w->timer, ev_priority (w));
2573 3247
2574#if EV_USE_INOTIFY 3248#if EV_USE_INOTIFY
2575 infy_init (EV_A); 3249 infy_init (EV_A);
2576 3250
2577 if (fs_fd >= 0) 3251 if (fs_fd >= 0)
2578 infy_add (EV_A_ w); 3252 infy_add (EV_A_ w);
2579 else 3253 else
2580#endif 3254#endif
3255 {
2581 ev_timer_start (EV_A_ &w->timer); 3256 ev_timer_again (EV_A_ &w->timer);
3257 ev_unref (EV_A);
3258 }
2582 3259
2583 ev_start (EV_A_ (W)w, 1); 3260 ev_start (EV_A_ (W)w, 1);
2584 3261
2585 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2586} 3263}
… …
2595 EV_FREQUENT_CHECK; 3272 EV_FREQUENT_CHECK;
2596 3273
2597#if EV_USE_INOTIFY 3274#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w); 3275 infy_del (EV_A_ w);
2599#endif 3276#endif
3277
3278 if (ev_is_active (&w->timer))
3279 {
3280 ev_ref (EV_A);
2600 ev_timer_stop (EV_A_ &w->timer); 3281 ev_timer_stop (EV_A_ &w->timer);
3282 }
2601 3283
2602 ev_stop (EV_A_ (W)w); 3284 ev_stop (EV_A_ (W)w);
2603 3285
2604 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2605} 3287}
… …
2650 3332
2651 EV_FREQUENT_CHECK; 3333 EV_FREQUENT_CHECK;
2652} 3334}
2653#endif 3335#endif
2654 3336
3337#if EV_PREPARE_ENABLE
2655void 3338void
2656ev_prepare_start (EV_P_ ev_prepare *w) 3339ev_prepare_start (EV_P_ ev_prepare *w)
2657{ 3340{
2658 if (expect_false (ev_is_active (w))) 3341 if (expect_false (ev_is_active (w)))
2659 return; 3342 return;
… …
2685 3368
2686 ev_stop (EV_A_ (W)w); 3369 ev_stop (EV_A_ (W)w);
2687 3370
2688 EV_FREQUENT_CHECK; 3371 EV_FREQUENT_CHECK;
2689} 3372}
3373#endif
2690 3374
3375#if EV_CHECK_ENABLE
2691void 3376void
2692ev_check_start (EV_P_ ev_check *w) 3377ev_check_start (EV_P_ ev_check *w)
2693{ 3378{
2694 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2695 return; 3380 return;
… …
2721 3406
2722 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
2723 3408
2724 EV_FREQUENT_CHECK; 3409 EV_FREQUENT_CHECK;
2725} 3410}
3411#endif
2726 3412
2727#if EV_EMBED_ENABLE 3413#if EV_EMBED_ENABLE
2728void noinline 3414void noinline
2729ev_embed_sweep (EV_P_ ev_embed *w) 3415ev_embed_sweep (EV_P_ ev_embed *w)
2730{ 3416{
… …
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{ 3433{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3434 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749 3435
2750 { 3436 {
2751 struct ev_loop *loop = w->other; 3437 EV_P = w->other;
2752 3438
2753 while (fdchangecnt) 3439 while (fdchangecnt)
2754 { 3440 {
2755 fd_reify (EV_A); 3441 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3442 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 } 3443 }
2758 } 3444 }
2759} 3445}
2760 3446
3447static void
3448embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3449{
3450 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3451
3452 ev_embed_stop (EV_A_ w);
3453
3454 {
3455 EV_P = w->other;
3456
3457 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3459 }
3460
3461 ev_embed_start (EV_A_ w);
3462}
3463
2761#if 0 3464#if 0
2762static void 3465static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3466embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{ 3467{
2765 ev_idle_stop (EV_A_ idle); 3468 ev_idle_stop (EV_A_ idle);
… …
2771{ 3474{
2772 if (expect_false (ev_is_active (w))) 3475 if (expect_false (ev_is_active (w)))
2773 return; 3476 return;
2774 3477
2775 { 3478 {
2776 struct ev_loop *loop = w->other; 3479 EV_P = w->other;
2777 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 ()));
2778 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);
2779 } 3482 }
2780 3483
2781 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2782 3485
… …
2785 3488
2786 ev_prepare_init (&w->prepare, embed_prepare_cb); 3489 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI); 3490 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare); 3491 ev_prepare_start (EV_A_ &w->prepare);
2789 3492
3493 ev_fork_init (&w->fork, embed_fork_cb);
3494 ev_fork_start (EV_A_ &w->fork);
3495
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3496 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791 3497
2792 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2793 3499
2794 EV_FREQUENT_CHECK; 3500 EV_FREQUENT_CHECK;
… …
2801 if (expect_false (!ev_is_active (w))) 3507 if (expect_false (!ev_is_active (w)))
2802 return; 3508 return;
2803 3509
2804 EV_FREQUENT_CHECK; 3510 EV_FREQUENT_CHECK;
2805 3511
2806 ev_io_stop (EV_A_ &w->io); 3512 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare); 3513 ev_prepare_stop (EV_A_ &w->prepare);
3514 ev_fork_stop (EV_A_ &w->fork);
2808 3515
2809 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
2810 3517
2811 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2812} 3519}
… …
2891 3598
2892void 3599void
2893ev_async_send (EV_P_ ev_async *w) 3600ev_async_send (EV_P_ ev_async *w)
2894{ 3601{
2895 w->sent = 1; 3602 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync); 3603 evpipe_write (EV_A_ &async_pending);
2897} 3604}
2898#endif 3605#endif
2899 3606
2900/*****************************************************************************/ 3607/*****************************************************************************/
2901 3608
… …
2911once_cb (EV_P_ struct ev_once *once, int revents) 3618once_cb (EV_P_ struct ev_once *once, int revents)
2912{ 3619{
2913 void (*cb)(int revents, void *arg) = once->cb; 3620 void (*cb)(int revents, void *arg) = once->cb;
2914 void *arg = once->arg; 3621 void *arg = once->arg;
2915 3622
2916 ev_io_stop (EV_A_ &once->io); 3623 ev_io_stop (EV_A_ &once->io);
2917 ev_timer_stop (EV_A_ &once->to); 3624 ev_timer_stop (EV_A_ &once->to);
2918 ev_free (once); 3625 ev_free (once);
2919 3626
2920 cb (revents, arg); 3627 cb (revents, arg);
2921} 3628}
2922 3629
2923static void 3630static void
2924once_cb_io (EV_P_ ev_io *w, int revents) 3631once_cb_io (EV_P_ ev_io *w, int revents)
2925{ 3632{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3633 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3634
3635 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927} 3636}
2928 3637
2929static void 3638static void
2930once_cb_to (EV_P_ ev_timer *w, int revents) 3639once_cb_to (EV_P_ ev_timer *w, int revents)
2931{ 3640{
2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3641 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3642
3643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933} 3644}
2934 3645
2935void 3646void
2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937{ 3648{
2938 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));
2939 3650
2940 if (expect_false (!once)) 3651 if (expect_false (!once))
2941 { 3652 {
2942 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2943 return; 3654 return;
2944 } 3655 }
2945 3656
2946 once->cb = cb; 3657 once->cb = cb;
2947 once->arg = arg; 3658 once->arg = arg;
… …
2959 ev_timer_set (&once->to, timeout, 0.); 3670 ev_timer_set (&once->to, timeout, 0.);
2960 ev_timer_start (EV_A_ &once->to); 3671 ev_timer_start (EV_A_ &once->to);
2961 } 3672 }
2962} 3673}
2963 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
2964#if EV_MULTIPLICITY 3791#if EV_MULTIPLICITY
2965 #include "ev_wrap.h" 3792 #include "ev_wrap.h"
2966#endif 3793#endif
2967 3794
2968#ifdef __cplusplus 3795#ifdef __cplusplus

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