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Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.339 by root, Tue Mar 16 00:43:22 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
… …
65# endif 79# endif
66# endif 80# endif
67 81
68# ifndef EV_USE_NANOSLEEP 82# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP 83# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
71# else 85# else
72# define EV_USE_NANOSLEEP 0 86# define EV_USE_NANOSLEEP 0
73# endif 87# endif
74# endif 88# endif
75 89
76# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
78# define EV_USE_SELECT 1 92# define EV_USE_SELECT EV_FEATURE_BACKENDS
79# else 93# else
80# define EV_USE_SELECT 0 94# define EV_USE_SELECT 0
81# endif 95# endif
82# endif 96# endif
83 97
84# ifndef EV_USE_POLL 98# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H 99# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1 100# define EV_USE_POLL EV_FEATURE_BACKENDS
87# else 101# else
88# define EV_USE_POLL 0 102# define EV_USE_POLL 0
89# endif 103# endif
90# endif 104# endif
91 105
92# ifndef EV_USE_EPOLL 106# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 108# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95# else 109# else
96# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
97# endif 111# endif
98# endif 112# endif
99 113
100# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# endif
107 121
108# ifndef EV_USE_PORT 122# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 124# define EV_USE_PORT EV_FEATURE_BACKENDS
111# else 125# else
112# define EV_USE_PORT 0 126# define EV_USE_PORT 0
113# endif 127# endif
114# endif 128# endif
115 129
116# ifndef EV_USE_INOTIFY 130# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 132# define EV_USE_INOTIFY EV_FEATURE_OS
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD EV_FEATURE_OS
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD EV_FEATURE_OS
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
129# endif 151# endif
130# endif 152# endif
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
136#include <fcntl.h> 159#include <fcntl.h>
137#include <stddef.h> 160#include <stddef.h>
138 161
139#include <stdio.h> 162#include <stdio.h>
140 163
141#include <assert.h> 164#include <assert.h>
142#include <errno.h> 165#include <errno.h>
143#include <sys/types.h> 166#include <sys/types.h>
144#include <time.h> 167#include <time.h>
168#include <limits.h>
145 169
146#include <signal.h> 170#include <signal.h>
147 171
148#ifdef EV_H 172#ifdef EV_H
149# include EV_H 173# include EV_H
… …
154#ifndef _WIN32 178#ifndef _WIN32
155# include <sys/time.h> 179# include <sys/time.h>
156# include <sys/wait.h> 180# include <sys/wait.h>
157# include <unistd.h> 181# include <unistd.h>
158#else 182#else
183# include <io.h>
159# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 185# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
163# endif 188# endif
189# undef EV_AVOID_STDIO
164#endif 190#endif
165 191
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 192/* this block tries to deduce configuration from header-defined symbols and defaults */
167 193
194/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG)
196/* use what's provided */
197#elif defined (NSIG)
198# define EV_NSIG (NSIG)
199#elif defined(_NSIG)
200# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX)
202# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX)
204# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX)
206# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE)
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else
216# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */
219# define EV_NSIG 65
220#endif
221
222#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else
226# define EV_USE_CLOCK_SYSCALL 0
227# endif
228#endif
229
168#ifndef EV_USE_MONOTONIC 230#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else
169# define EV_USE_MONOTONIC 0 234# define EV_USE_MONOTONIC 0
235# endif
170#endif 236#endif
171 237
172#ifndef EV_USE_REALTIME 238#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 240#endif
175 241
176#ifndef EV_USE_NANOSLEEP 242#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else
177# define EV_USE_NANOSLEEP 0 246# define EV_USE_NANOSLEEP 0
247# endif
178#endif 248#endif
179 249
180#ifndef EV_USE_SELECT 250#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 251# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 252#endif
183 253
184#ifndef EV_USE_POLL 254#ifndef EV_USE_POLL
185# ifdef _WIN32 255# ifdef _WIN32
186# define EV_USE_POLL 0 256# define EV_USE_POLL 0
187# else 257# else
188# define EV_USE_POLL 1 258# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 259# endif
190#endif 260#endif
191 261
192#ifndef EV_USE_EPOLL 262#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 264# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 265# else
196# define EV_USE_EPOLL 0 266# define EV_USE_EPOLL 0
197# endif 267# endif
198#endif 268#endif
199 269
… …
205# define EV_USE_PORT 0 275# define EV_USE_PORT 0
206#endif 276#endif
207 277
208#ifndef EV_USE_INOTIFY 278#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 280# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 281# else
212# define EV_USE_INOTIFY 0 282# define EV_USE_INOTIFY 0
213# endif 283# endif
214#endif 284#endif
215 285
216#ifndef EV_PID_HASHSIZE 286#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 287# 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 288#endif
223 289
224#ifndef EV_INOTIFY_HASHSIZE 290#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 291# 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 292#endif
231 293
232#ifndef EV_USE_EVENTFD 294#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 295# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 296# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 297# else
236# define EV_USE_EVENTFD 0 298# define EV_USE_EVENTFD 0
237# endif 299# endif
238#endif 300#endif
239 301
302#ifndef EV_USE_SIGNALFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_SIGNALFD EV_FEATURE_OS
305# else
306# define EV_USE_SIGNALFD 0
307# endif
308#endif
309
310#if 0 /* debugging */
311# define EV_VERIFY 3
312# define EV_USE_4HEAP 1
313# define EV_HEAP_CACHE_AT 1
314#endif
315
316#ifndef EV_VERIFY
317# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
318#endif
319
240#ifndef EV_USE_4HEAP 320#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 321# define EV_USE_4HEAP EV_FEATURE_DATA
242#endif 322#endif
243 323
244#ifndef EV_HEAP_CACHE_AT 324#ifndef EV_HEAP_CACHE_AT
245# define EV_HEAP_CACHE_AT !EV_MINIMAL 325# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
326#endif
327
328/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
329/* which makes programs even slower. might work on other unices, too. */
330#if EV_USE_CLOCK_SYSCALL
331# include <syscall.h>
332# ifdef SYS_clock_gettime
333# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
334# undef EV_USE_MONOTONIC
335# define EV_USE_MONOTONIC 1
336# else
337# undef EV_USE_CLOCK_SYSCALL
338# define EV_USE_CLOCK_SYSCALL 0
339# endif
246#endif 340#endif
247 341
248/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 342/* this block fixes any misconfiguration where we know we run into trouble otherwise */
343
344#ifdef _AIX
345/* AIX has a completely broken poll.h header */
346# undef EV_USE_POLL
347# define EV_USE_POLL 0
348#endif
249 349
250#ifndef CLOCK_MONOTONIC 350#ifndef CLOCK_MONOTONIC
251# undef EV_USE_MONOTONIC 351# undef EV_USE_MONOTONIC
252# define EV_USE_MONOTONIC 0 352# define EV_USE_MONOTONIC 0
253#endif 353#endif
… …
267# include <sys/select.h> 367# include <sys/select.h>
268# endif 368# endif
269#endif 369#endif
270 370
271#if EV_USE_INOTIFY 371#if EV_USE_INOTIFY
372# include <sys/utsname.h>
373# include <sys/statfs.h>
272# include <sys/inotify.h> 374# include <sys/inotify.h>
375/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
376# ifndef IN_DONT_FOLLOW
377# undef EV_USE_INOTIFY
378# define EV_USE_INOTIFY 0
379# endif
273#endif 380#endif
274 381
275#if EV_SELECT_IS_WINSOCKET 382#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 383# include <winsock.h>
277#endif 384#endif
278 385
279#if EV_USE_EVENTFD 386#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 387/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 388# include <stdint.h>
389# ifndef EFD_NONBLOCK
390# define EFD_NONBLOCK O_NONBLOCK
391# endif
392# ifndef EFD_CLOEXEC
393# ifdef O_CLOEXEC
394# define EFD_CLOEXEC O_CLOEXEC
395# else
396# define EFD_CLOEXEC 02000000
397# endif
398# endif
282# ifdef __cplusplus 399# ifdef __cplusplus
283extern "C" { 400extern "C" {
284# endif 401# endif
285int eventfd (unsigned int initval, int flags); 402int (eventfd) (unsigned int initval, int flags);
286# ifdef __cplusplus 403# ifdef __cplusplus
287} 404}
288# endif 405# endif
289#endif 406#endif
290 407
408#if EV_USE_SIGNALFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h>
411# ifndef SFD_NONBLOCK
412# define SFD_NONBLOCK O_NONBLOCK
413# endif
414# ifndef SFD_CLOEXEC
415# ifdef O_CLOEXEC
416# define SFD_CLOEXEC O_CLOEXEC
417# else
418# define SFD_CLOEXEC 02000000
419# endif
420# endif
421# ifdef __cplusplus
422extern "C" {
423# endif
424int signalfd (int fd, const sigset_t *mask, int flags);
425
426struct signalfd_siginfo
427{
428 uint32_t ssi_signo;
429 char pad[128 - sizeof (uint32_t)];
430};
431# ifdef __cplusplus
432}
433# endif
434#endif
435
436
291/**/ 437/**/
292 438
293/* undefined or zero: no verification done or available */
294/* 1 or higher: ev_loop_verify function available */
295/* 2 or higher: ev_loop_verify is called frequently */
296#define EV_VERIFY 1
297
298#if EV_VERIFY > 1 439#if EV_VERIFY >= 3
299# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 440# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300#else 441#else
301# define EV_FREQUENT_CHECK do { } while (0) 442# define EV_FREQUENT_CHECK do { } while (0)
302#endif 443#endif
303 444
… …
311 */ 452 */
312#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
313 454
314#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 455#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
315#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 456#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
316/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
317 457
318#if __GNUC__ >= 4 458#if __GNUC__ >= 4
319# define expect(expr,value) __builtin_expect ((expr),(value)) 459# define expect(expr,value) __builtin_expect ((expr),(value))
320# define noinline __attribute__ ((noinline)) 460# define noinline __attribute__ ((noinline))
321#else 461#else
… …
328 468
329#define expect_false(expr) expect ((expr) != 0, 0) 469#define expect_false(expr) expect ((expr) != 0, 0)
330#define expect_true(expr) expect ((expr) != 0, 1) 470#define expect_true(expr) expect ((expr) != 0, 1)
331#define inline_size static inline 471#define inline_size static inline
332 472
333#if EV_MINIMAL 473#if EV_FEATURE_CODE
474# define inline_speed static inline
475#else
334# define inline_speed static noinline 476# define inline_speed static noinline
477#endif
478
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
480
481#if EV_MINPRI == EV_MAXPRI
482# define ABSPRI(w) (((W)w), 0)
335#else 483#else
336# define inline_speed static inline
337#endif
338
339#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
340#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 484# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
485#endif
341 486
342#define EMPTY /* required for microsofts broken pseudo-c compiler */ 487#define EMPTY /* required for microsofts broken pseudo-c compiler */
343#define EMPTY2(a,b) /* used to suppress some warnings */ 488#define EMPTY2(a,b) /* used to suppress some warnings */
344 489
345typedef ev_watcher *W; 490typedef ev_watcher *W;
… …
347typedef ev_watcher_time *WT; 492typedef ev_watcher_time *WT;
348 493
349#define ev_active(w) ((W)(w))->active 494#define ev_active(w) ((W)(w))->active
350#define ev_at(w) ((WT)(w))->at 495#define ev_at(w) ((WT)(w))->at
351 496
352#if EV_USE_MONOTONIC 497#if EV_USE_REALTIME
353/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 498/* sig_atomic_t is used to avoid per-thread variables or locking but still */
354/* giving it a reasonably high chance of working on typical architetcures */ 499/* giving it a reasonably high chance of working on typical architetcures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif
502
503#if EV_USE_MONOTONIC
355static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
505#endif
506
507#ifndef EV_FD_TO_WIN32_HANDLE
508# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
509#endif
510#ifndef EV_WIN32_HANDLE_TO_FD
511# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
512#endif
513#ifndef EV_WIN32_CLOSE_FD
514# define EV_WIN32_CLOSE_FD(fd) close (fd)
356#endif 515#endif
357 516
358#ifdef _WIN32 517#ifdef _WIN32
359# include "ev_win32.c" 518# include "ev_win32.c"
360#endif 519#endif
361 520
362/*****************************************************************************/ 521/*****************************************************************************/
363 522
523#if EV_AVOID_STDIO
524static void noinline
525ev_printerr (const char *msg)
526{
527 write (STDERR_FILENO, msg, strlen (msg));
528}
529#endif
530
364static void (*syserr_cb)(const char *msg); 531static void (*syserr_cb)(const char *msg);
365 532
366void 533void
367ev_set_syserr_cb (void (*cb)(const char *msg)) 534ev_set_syserr_cb (void (*cb)(const char *msg))
368{ 535{
369 syserr_cb = cb; 536 syserr_cb = cb;
370} 537}
371 538
372static void noinline 539static void noinline
373syserr (const char *msg) 540ev_syserr (const char *msg)
374{ 541{
375 if (!msg) 542 if (!msg)
376 msg = "(libev) system error"; 543 msg = "(libev) system error";
377 544
378 if (syserr_cb) 545 if (syserr_cb)
379 syserr_cb (msg); 546 syserr_cb (msg);
380 else 547 else
381 { 548 {
549#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg);
553 ev_printerr (": ");
554 ev_printerr (err);
555 ev_printerr ("\n");
556#else
382 perror (msg); 557 perror (msg);
558#endif
383 abort (); 559 abort ();
384 } 560 }
385} 561}
386 562
387static void * 563static void *
388ev_realloc_emul (void *ptr, long size) 564ev_realloc_emul (void *ptr, long size)
389{ 565{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
390 /* some systems, notably openbsd and darwin, fail to properly 569 /* some systems, notably openbsd and darwin, fail to properly
391 * implement realloc (x, 0) (as required by both ansi c-98 and 570 * implement realloc (x, 0) (as required by both ansi c-89 and
392 * the single unix specification, so work around them here. 571 * the single unix specification, so work around them here.
393 */ 572 */
394 573
395 if (size) 574 if (size)
396 return realloc (ptr, size); 575 return realloc (ptr, size);
397 576
398 free (ptr); 577 free (ptr);
399 return 0; 578 return 0;
579#endif
400} 580}
401 581
402static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
403 583
404void 584void
… …
412{ 592{
413 ptr = alloc (ptr, size); 593 ptr = alloc (ptr, size);
414 594
415 if (!ptr && size) 595 if (!ptr && size)
416 { 596 {
597#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n");
599#else
417 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
601#endif
418 abort (); 602 abort ();
419 } 603 }
420 604
421 return ptr; 605 return ptr;
422} 606}
… …
424#define ev_malloc(size) ev_realloc (0, (size)) 608#define ev_malloc(size) ev_realloc (0, (size))
425#define ev_free(ptr) ev_realloc ((ptr), 0) 609#define ev_free(ptr) ev_realloc ((ptr), 0)
426 610
427/*****************************************************************************/ 611/*****************************************************************************/
428 612
613/* set in reify when reification needed */
614#define EV_ANFD_REIFY 1
615
616/* file descriptor info structure */
429typedef struct 617typedef struct
430{ 618{
431 WL head; 619 WL head;
432 unsigned char events; 620 unsigned char events; /* the events watched for */
621 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
433 unsigned char reify; 623 unsigned char unused;
624#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif
434#if EV_SELECT_IS_WINSOCKET 627#if EV_SELECT_IS_WINSOCKET
435 SOCKET handle; 628 SOCKET handle;
436#endif 629#endif
437} ANFD; 630} ANFD;
438 631
632/* stores the pending event set for a given watcher */
439typedef struct 633typedef struct
440{ 634{
441 W w; 635 W w;
442 int events; 636 int events; /* the pending event set for the given watcher */
443} ANPENDING; 637} ANPENDING;
444 638
445#if EV_USE_INOTIFY 639#if EV_USE_INOTIFY
446/* hash table entry per inotify-id */ 640/* hash table entry per inotify-id */
447typedef struct 641typedef struct
… …
450} ANFS; 644} ANFS;
451#endif 645#endif
452 646
453/* Heap Entry */ 647/* Heap Entry */
454#if EV_HEAP_CACHE_AT 648#if EV_HEAP_CACHE_AT
649 /* a heap element */
455 typedef struct { 650 typedef struct {
456 ev_tstamp at; 651 ev_tstamp at;
457 WT w; 652 WT w;
458 } ANHE; 653 } ANHE;
459 654
460 #define ANHE_w(he) (he).w /* access watcher, read-write */ 655 #define ANHE_w(he) (he).w /* access watcher, read-write */
461 #define ANHE_at(he) (he).at /* access cached at, read-only */ 656 #define ANHE_at(he) (he).at /* access cached at, read-only */
462 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 657 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
463#else 658#else
659 /* a heap element */
464 typedef WT ANHE; 660 typedef WT ANHE;
465 661
466 #define ANHE_w(he) (he) 662 #define ANHE_w(he) (he)
467 #define ANHE_at(he) (he)->at 663 #define ANHE_at(he) (he)->at
468 #define ANHE_at_cache(he) 664 #define ANHE_at_cache(he)
… …
492 688
493 static int ev_default_loop_ptr; 689 static int ev_default_loop_ptr;
494 690
495#endif 691#endif
496 692
693#if EV_FEATURE_API
694# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
695# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
696# define EV_INVOKE_PENDING invoke_cb (EV_A)
697#else
698# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif
702
703#define EVUNLOOP_RECURSE 0x80
704
497/*****************************************************************************/ 705/*****************************************************************************/
498 706
707#ifndef EV_HAVE_EV_TIME
499ev_tstamp 708ev_tstamp
500ev_time (void) 709ev_time (void)
501{ 710{
502#if EV_USE_REALTIME 711#if EV_USE_REALTIME
712 if (expect_true (have_realtime))
713 {
503 struct timespec ts; 714 struct timespec ts;
504 clock_gettime (CLOCK_REALTIME, &ts); 715 clock_gettime (CLOCK_REALTIME, &ts);
505 return ts.tv_sec + ts.tv_nsec * 1e-9; 716 return ts.tv_sec + ts.tv_nsec * 1e-9;
506#else 717 }
718#endif
719
507 struct timeval tv; 720 struct timeval tv;
508 gettimeofday (&tv, 0); 721 gettimeofday (&tv, 0);
509 return tv.tv_sec + tv.tv_usec * 1e-6; 722 return tv.tv_sec + tv.tv_usec * 1e-6;
510#endif
511} 723}
724#endif
512 725
513ev_tstamp inline_size 726inline_size ev_tstamp
514get_clock (void) 727get_clock (void)
515{ 728{
516#if EV_USE_MONOTONIC 729#if EV_USE_MONOTONIC
517 if (expect_true (have_monotonic)) 730 if (expect_true (have_monotonic))
518 { 731 {
… …
551 struct timeval tv; 764 struct timeval tv;
552 765
553 tv.tv_sec = (time_t)delay; 766 tv.tv_sec = (time_t)delay;
554 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555 768
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */
556 select (0, 0, 0, 0, &tv); 772 select (0, 0, 0, 0, &tv);
557#endif 773#endif
558 } 774 }
559} 775}
560 776
561/*****************************************************************************/ 777/*****************************************************************************/
562 778
563#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
564 780
565int inline_size 781/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */
783inline_size int
566array_nextsize (int elem, int cur, int cnt) 784array_nextsize (int elem, int cur, int cnt)
567{ 785{
568 int ncur = cur + 1; 786 int ncur = cur + 1;
569 787
570 do 788 do
… …
587array_realloc (int elem, void *base, int *cur, int cnt) 805array_realloc (int elem, void *base, int *cur, int cnt)
588{ 806{
589 *cur = array_nextsize (elem, *cur, cnt); 807 *cur = array_nextsize (elem, *cur, cnt);
590 return ev_realloc (base, elem * *cur); 808 return ev_realloc (base, elem * *cur);
591} 809}
810
811#define array_init_zero(base,count) \
812 memset ((void *)(base), 0, sizeof (*(base)) * (count))
592 813
593#define array_needsize(type,base,cur,cnt,init) \ 814#define array_needsize(type,base,cur,cnt,init) \
594 if (expect_false ((cnt) > (cur))) \ 815 if (expect_false ((cnt) > (cur))) \
595 { \ 816 { \
596 int ocur_ = (cur); \ 817 int ocur_ = (cur); \
… …
608 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 829 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
609 } 830 }
610#endif 831#endif
611 832
612#define array_free(stem, idx) \ 833#define array_free(stem, idx) \
613 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 834 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
614 835
615/*****************************************************************************/ 836/*****************************************************************************/
837
838/* dummy callback for pending events */
839static void noinline
840pendingcb (EV_P_ ev_prepare *w, int revents)
841{
842}
616 843
617void noinline 844void noinline
618ev_feed_event (EV_P_ void *w, int revents) 845ev_feed_event (EV_P_ void *w, int revents)
619{ 846{
620 W w_ = (W)w; 847 W w_ = (W)w;
… …
629 pendings [pri][w_->pending - 1].w = w_; 856 pendings [pri][w_->pending - 1].w = w_;
630 pendings [pri][w_->pending - 1].events = revents; 857 pendings [pri][w_->pending - 1].events = revents;
631 } 858 }
632} 859}
633 860
634void inline_speed 861inline_speed void
862feed_reverse (EV_P_ W w)
863{
864 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
865 rfeeds [rfeedcnt++] = w;
866}
867
868inline_size void
869feed_reverse_done (EV_P_ int revents)
870{
871 do
872 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
873 while (rfeedcnt);
874}
875
876inline_speed void
635queue_events (EV_P_ W *events, int eventcnt, int type) 877queue_events (EV_P_ W *events, int eventcnt, int type)
636{ 878{
637 int i; 879 int i;
638 880
639 for (i = 0; i < eventcnt; ++i) 881 for (i = 0; i < eventcnt; ++i)
640 ev_feed_event (EV_A_ events [i], type); 882 ev_feed_event (EV_A_ events [i], type);
641} 883}
642 884
643/*****************************************************************************/ 885/*****************************************************************************/
644 886
645void inline_size 887inline_speed void
646anfds_init (ANFD *base, int count)
647{
648 while (count--)
649 {
650 base->head = 0;
651 base->events = EV_NONE;
652 base->reify = 0;
653
654 ++base;
655 }
656}
657
658void inline_speed
659fd_event (EV_P_ int fd, int revents) 888fd_event_nocheck (EV_P_ int fd, int revents)
660{ 889{
661 ANFD *anfd = anfds + fd; 890 ANFD *anfd = anfds + fd;
662 ev_io *w; 891 ev_io *w;
663 892
664 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 893 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
668 if (ev) 897 if (ev)
669 ev_feed_event (EV_A_ (W)w, ev); 898 ev_feed_event (EV_A_ (W)w, ev);
670 } 899 }
671} 900}
672 901
902/* do not submit kernel events for fds that have reify set */
903/* because that means they changed while we were polling for new events */
904inline_speed void
905fd_event (EV_P_ int fd, int revents)
906{
907 ANFD *anfd = anfds + fd;
908
909 if (expect_true (!anfd->reify))
910 fd_event_nocheck (EV_A_ fd, revents);
911}
912
673void 913void
674ev_feed_fd_event (EV_P_ int fd, int revents) 914ev_feed_fd_event (EV_P_ int fd, int revents)
675{ 915{
676 if (fd >= 0 && fd < anfdmax) 916 if (fd >= 0 && fd < anfdmax)
677 fd_event (EV_A_ fd, revents); 917 fd_event_nocheck (EV_A_ fd, revents);
678} 918}
679 919
680void inline_size 920/* make sure the external fd watch events are in-sync */
921/* with the kernel/libev internal state */
922inline_size void
681fd_reify (EV_P) 923fd_reify (EV_P)
682{ 924{
683 int i; 925 int i;
684 926
685 for (i = 0; i < fdchangecnt; ++i) 927 for (i = 0; i < fdchangecnt; ++i)
… …
694 events |= (unsigned char)w->events; 936 events |= (unsigned char)w->events;
695 937
696#if EV_SELECT_IS_WINSOCKET 938#if EV_SELECT_IS_WINSOCKET
697 if (events) 939 if (events)
698 { 940 {
699 unsigned long argp; 941 unsigned long arg;
700 #ifdef EV_FD_TO_WIN32_HANDLE
701 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702 #else
703 anfd->handle = _get_osfhandle (fd);
704 #endif
705 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
706 } 944 }
707#endif 945#endif
708 946
709 { 947 {
710 unsigned char o_events = anfd->events; 948 unsigned char o_events = anfd->events;
711 unsigned char o_reify = anfd->reify; 949 unsigned char o_reify = anfd->reify;
712 950
713 anfd->reify = 0; 951 anfd->reify = 0;
714 anfd->events = events; 952 anfd->events = events;
715 953
716 if (o_events != events || o_reify & EV_IOFDSET) 954 if (o_events != events || o_reify & EV__IOFDSET)
717 backend_modify (EV_A_ fd, o_events, events); 955 backend_modify (EV_A_ fd, o_events, events);
718 } 956 }
719 } 957 }
720 958
721 fdchangecnt = 0; 959 fdchangecnt = 0;
722} 960}
723 961
724void inline_size 962/* something about the given fd changed */
963inline_size void
725fd_change (EV_P_ int fd, int flags) 964fd_change (EV_P_ int fd, int flags)
726{ 965{
727 unsigned char reify = anfds [fd].reify; 966 unsigned char reify = anfds [fd].reify;
728 anfds [fd].reify |= flags; 967 anfds [fd].reify |= flags;
729 968
… …
733 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 972 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
734 fdchanges [fdchangecnt - 1] = fd; 973 fdchanges [fdchangecnt - 1] = fd;
735 } 974 }
736} 975}
737 976
738void inline_speed 977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void
739fd_kill (EV_P_ int fd) 979fd_kill (EV_P_ int fd)
740{ 980{
741 ev_io *w; 981 ev_io *w;
742 982
743 while ((w = (ev_io *)anfds [fd].head)) 983 while ((w = (ev_io *)anfds [fd].head))
… …
745 ev_io_stop (EV_A_ w); 985 ev_io_stop (EV_A_ w);
746 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
747 } 987 }
748} 988}
749 989
750int inline_size 990/* check whether the given fd is actually valid, for error recovery */
991inline_size int
751fd_valid (int fd) 992fd_valid (int fd)
752{ 993{
753#ifdef _WIN32 994#ifdef _WIN32
754 return _get_osfhandle (fd) != -1; 995 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
755#else 996#else
756 return fcntl (fd, F_GETFD) != -1; 997 return fcntl (fd, F_GETFD) != -1;
757#endif 998#endif
758} 999}
759 1000
… …
763{ 1004{
764 int fd; 1005 int fd;
765 1006
766 for (fd = 0; fd < anfdmax; ++fd) 1007 for (fd = 0; fd < anfdmax; ++fd)
767 if (anfds [fd].events) 1008 if (anfds [fd].events)
768 if (!fd_valid (fd) == -1 && errno == EBADF) 1009 if (!fd_valid (fd) && errno == EBADF)
769 fd_kill (EV_A_ fd); 1010 fd_kill (EV_A_ fd);
770} 1011}
771 1012
772/* called on ENOMEM in select/poll to kill some fds and retry */ 1013/* called on ENOMEM in select/poll to kill some fds and retry */
773static void noinline 1014static void noinline
… …
777 1018
778 for (fd = anfdmax; fd--; ) 1019 for (fd = anfdmax; fd--; )
779 if (anfds [fd].events) 1020 if (anfds [fd].events)
780 { 1021 {
781 fd_kill (EV_A_ fd); 1022 fd_kill (EV_A_ fd);
782 return; 1023 break;
783 } 1024 }
784} 1025}
785 1026
786/* usually called after fork if backend needs to re-arm all fds from scratch */ 1027/* usually called after fork if backend needs to re-arm all fds from scratch */
787static void noinline 1028static void noinline
… …
791 1032
792 for (fd = 0; fd < anfdmax; ++fd) 1033 for (fd = 0; fd < anfdmax; ++fd)
793 if (anfds [fd].events) 1034 if (anfds [fd].events)
794 { 1035 {
795 anfds [fd].events = 0; 1036 anfds [fd].events = 0;
1037 anfds [fd].emask = 0;
796 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1038 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
797 } 1039 }
1040}
1041
1042/* used to prepare libev internal fd's */
1043/* this is not fork-safe */
1044inline_speed void
1045fd_intern (int fd)
1046{
1047#ifdef _WIN32
1048 unsigned long arg = 1;
1049 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1050#else
1051 fcntl (fd, F_SETFD, FD_CLOEXEC);
1052 fcntl (fd, F_SETFL, O_NONBLOCK);
1053#endif
798} 1054}
799 1055
800/*****************************************************************************/ 1056/*****************************************************************************/
801 1057
802/* 1058/*
… …
817#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1073#define HEAP0 (DHEAP - 1) /* index of first element in heap */
818#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1074#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
819#define UPHEAP_DONE(p,k) ((p) == (k)) 1075#define UPHEAP_DONE(p,k) ((p) == (k))
820 1076
821/* away from the root */ 1077/* away from the root */
822void inline_speed 1078inline_speed void
823downheap (ANHE *heap, int N, int k) 1079downheap (ANHE *heap, int N, int k)
824{ 1080{
825 ANHE he = heap [k]; 1081 ANHE he = heap [k];
826 ANHE *E = heap + N + HEAP0; 1082 ANHE *E = heap + N + HEAP0;
827 1083
… …
867#define HEAP0 1 1123#define HEAP0 1
868#define HPARENT(k) ((k) >> 1) 1124#define HPARENT(k) ((k) >> 1)
869#define UPHEAP_DONE(p,k) (!(p)) 1125#define UPHEAP_DONE(p,k) (!(p))
870 1126
871/* away from the root */ 1127/* away from the root */
872void inline_speed 1128inline_speed void
873downheap (ANHE *heap, int N, int k) 1129downheap (ANHE *heap, int N, int k)
874{ 1130{
875 ANHE he = heap [k]; 1131 ANHE he = heap [k];
876 1132
877 for (;;) 1133 for (;;)
878 { 1134 {
879 int c = k << 1; 1135 int c = k << 1;
880 1136
881 if (c > N + HEAP0 - 1) 1137 if (c >= N + HEAP0)
882 break; 1138 break;
883 1139
884 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1140 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
885 ? 1 : 0; 1141 ? 1 : 0;
886 1142
… …
897 ev_active (ANHE_w (he)) = k; 1153 ev_active (ANHE_w (he)) = k;
898} 1154}
899#endif 1155#endif
900 1156
901/* towards the root */ 1157/* towards the root */
902void inline_speed 1158inline_speed void
903upheap (ANHE *heap, int k) 1159upheap (ANHE *heap, int k)
904{ 1160{
905 ANHE he = heap [k]; 1161 ANHE he = heap [k];
906 1162
907 for (;;) 1163 for (;;)
… …
918 1174
919 heap [k] = he; 1175 heap [k] = he;
920 ev_active (ANHE_w (he)) = k; 1176 ev_active (ANHE_w (he)) = k;
921} 1177}
922 1178
923void inline_size 1179/* move an element suitably so it is in a correct place */
1180inline_size void
924adjustheap (ANHE *heap, int N, int k) 1181adjustheap (ANHE *heap, int N, int k)
925{ 1182{
926 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1183 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
927 upheap (heap, k); 1184 upheap (heap, k);
928 else 1185 else
929 downheap (heap, N, k); 1186 downheap (heap, N, k);
930} 1187}
931 1188
932/* rebuild the heap: this function is used only once and executed rarely */ 1189/* rebuild the heap: this function is used only once and executed rarely */
933void inline_size 1190inline_size void
934reheap (ANHE *heap, int N) 1191reheap (ANHE *heap, int N)
935{ 1192{
936 int i; 1193 int i;
1194
937 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1195 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
938 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1196 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
939 for (i = 0; i < N; ++i) 1197 for (i = 0; i < N; ++i)
940 upheap (heap, i + HEAP0); 1198 upheap (heap, i + HEAP0);
941} 1199}
942 1200
943#if EV_VERIFY
944static void
945checkheap (ANHE *heap, int N)
946{
947 int i;
948
949 for (i = HEAP0; i < N + HEAP0; ++i)
950 {
951 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954 }
955}
956#endif
957
958/*****************************************************************************/ 1201/*****************************************************************************/
959 1202
1203/* associate signal watchers to a signal signal */
960typedef struct 1204typedef struct
961{ 1205{
1206 EV_ATOMIC_T pending;
1207#if EV_MULTIPLICITY
1208 EV_P;
1209#endif
962 WL head; 1210 WL head;
963 EV_ATOMIC_T gotsig;
964} ANSIG; 1211} ANSIG;
965 1212
966static ANSIG *signals; 1213static ANSIG signals [EV_NSIG - 1];
967static int signalmax;
968
969static EV_ATOMIC_T gotsig;
970
971void inline_size
972signals_init (ANSIG *base, int count)
973{
974 while (count--)
975 {
976 base->head = 0;
977 base->gotsig = 0;
978
979 ++base;
980 }
981}
982 1214
983/*****************************************************************************/ 1215/*****************************************************************************/
984 1216
985void inline_speed 1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
986fd_intern (int fd)
987{
988#ifdef _WIN32
989 int arg = 1;
990 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991#else
992 fcntl (fd, F_SETFD, FD_CLOEXEC);
993 fcntl (fd, F_SETFL, O_NONBLOCK);
994#endif
995}
996 1218
997static void noinline 1219static void noinline
998evpipe_init (EV_P) 1220evpipe_init (EV_P)
999{ 1221{
1000 if (!ev_is_active (&pipeev)) 1222 if (!ev_is_active (&pipe_w))
1001 { 1223 {
1002#if EV_USE_EVENTFD 1224# if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL)
1003 if ((evfd = eventfd (0, 0)) >= 0) 1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
1004 { 1230 {
1005 evpipe [0] = -1; 1231 evpipe [0] = -1;
1006 fd_intern (evfd); 1232 fd_intern (evfd); /* doing it twice doesn't hurt */
1007 ev_io_set (&pipeev, evfd, EV_READ); 1233 ev_io_set (&pipe_w, evfd, EV_READ);
1008 } 1234 }
1009 else 1235 else
1010#endif 1236# endif
1011 { 1237 {
1012 while (pipe (evpipe)) 1238 while (pipe (evpipe))
1013 syserr ("(libev) error creating signal/async pipe"); 1239 ev_syserr ("(libev) error creating signal/async pipe");
1014 1240
1015 fd_intern (evpipe [0]); 1241 fd_intern (evpipe [0]);
1016 fd_intern (evpipe [1]); 1242 fd_intern (evpipe [1]);
1017 ev_io_set (&pipeev, evpipe [0], EV_READ); 1243 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018 } 1244 }
1019 1245
1020 ev_io_start (EV_A_ &pipeev); 1246 ev_io_start (EV_A_ &pipe_w);
1021 ev_unref (EV_A); /* watcher should not keep loop alive */ 1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1022 } 1248 }
1023} 1249}
1024 1250
1025void inline_size 1251inline_size void
1026evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027{ 1253{
1028 if (!*flag) 1254 if (!*flag)
1029 { 1255 {
1030 int old_errno = errno; /* save errno because write might clobber it */ 1256 int old_errno = errno; /* save errno because write might clobber it */
1257 char dummy;
1031 1258
1032 *flag = 1; 1259 *flag = 1;
1033 1260
1034#if EV_USE_EVENTFD 1261#if EV_USE_EVENTFD
1035 if (evfd >= 0) 1262 if (evfd >= 0)
… …
1037 uint64_t counter = 1; 1264 uint64_t counter = 1;
1038 write (evfd, &counter, sizeof (uint64_t)); 1265 write (evfd, &counter, sizeof (uint64_t));
1039 } 1266 }
1040 else 1267 else
1041#endif 1268#endif
1042 write (evpipe [1], &old_errno, 1); 1269 write (evpipe [1], &dummy, 1);
1043 1270
1044 errno = old_errno; 1271 errno = old_errno;
1045 } 1272 }
1046} 1273}
1047 1274
1275/* called whenever the libev signal pipe */
1276/* got some events (signal, async) */
1048static void 1277static void
1049pipecb (EV_P_ ev_io *iow, int revents) 1278pipecb (EV_P_ ev_io *iow, int revents)
1050{ 1279{
1280 int i;
1281
1051#if EV_USE_EVENTFD 1282#if EV_USE_EVENTFD
1052 if (evfd >= 0) 1283 if (evfd >= 0)
1053 { 1284 {
1054 uint64_t counter; 1285 uint64_t counter;
1055 read (evfd, &counter, sizeof (uint64_t)); 1286 read (evfd, &counter, sizeof (uint64_t));
… …
1059 { 1290 {
1060 char dummy; 1291 char dummy;
1061 read (evpipe [0], &dummy, 1); 1292 read (evpipe [0], &dummy, 1);
1062 } 1293 }
1063 1294
1064 if (gotsig && ev_is_default_loop (EV_A)) 1295 if (sig_pending)
1065 { 1296 {
1066 int signum; 1297 sig_pending = 0;
1067 gotsig = 0;
1068 1298
1069 for (signum = signalmax; signum--; ) 1299 for (i = EV_NSIG - 1; i--; )
1070 if (signals [signum].gotsig) 1300 if (expect_false (signals [i].pending))
1071 ev_feed_signal_event (EV_A_ signum + 1); 1301 ev_feed_signal_event (EV_A_ i + 1);
1072 } 1302 }
1073 1303
1074#if EV_ASYNC_ENABLE 1304#if EV_ASYNC_ENABLE
1075 if (gotasync) 1305 if (async_pending)
1076 { 1306 {
1077 int i; 1307 async_pending = 0;
1078 gotasync = 0;
1079 1308
1080 for (i = asynccnt; i--; ) 1309 for (i = asynccnt; i--; )
1081 if (asyncs [i]->sent) 1310 if (asyncs [i]->sent)
1082 { 1311 {
1083 asyncs [i]->sent = 0; 1312 asyncs [i]->sent = 0;
… …
1091 1320
1092static void 1321static void
1093ev_sighandler (int signum) 1322ev_sighandler (int signum)
1094{ 1323{
1095#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1096 struct ev_loop *loop = &default_loop_struct; 1325 EV_P = signals [signum - 1].loop;
1097#endif 1326#endif
1098 1327
1099#if _WIN32 1328#ifdef _WIN32
1100 signal (signum, ev_sighandler); 1329 signal (signum, ev_sighandler);
1101#endif 1330#endif
1102 1331
1103 signals [signum - 1].gotsig = 1; 1332 signals [signum - 1].pending = 1;
1104 evpipe_write (EV_A_ &gotsig); 1333 evpipe_write (EV_A_ &sig_pending);
1105} 1334}
1106 1335
1107void noinline 1336void noinline
1108ev_feed_signal_event (EV_P_ int signum) 1337ev_feed_signal_event (EV_P_ int signum)
1109{ 1338{
1110 WL w; 1339 WL w;
1111 1340
1341 if (expect_false (signum <= 0 || signum > EV_NSIG))
1342 return;
1343
1344 --signum;
1345
1112#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
1113 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1347 /* it is permissible to try to feed a signal to the wrong loop */
1114#endif 1348 /* or, likely more useful, feeding a signal nobody is waiting for */
1115 1349
1116 --signum; 1350 if (expect_false (signals [signum].loop != EV_A))
1117
1118 if (signum < 0 || signum >= signalmax)
1119 return; 1351 return;
1352#endif
1120 1353
1121 signals [signum].gotsig = 0; 1354 signals [signum].pending = 0;
1122 1355
1123 for (w = signals [signum].head; w; w = w->next) 1356 for (w = signals [signum].head; w; w = w->next)
1124 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1125} 1358}
1126 1359
1360#if EV_USE_SIGNALFD
1361static void
1362sigfdcb (EV_P_ ev_io *iow, int revents)
1363{
1364 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1365
1366 for (;;)
1367 {
1368 ssize_t res = read (sigfd, si, sizeof (si));
1369
1370 /* not ISO-C, as res might be -1, but works with SuS */
1371 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1372 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1373
1374 if (res < (ssize_t)sizeof (si))
1375 break;
1376 }
1377}
1378#endif
1379
1380#endif
1381
1127/*****************************************************************************/ 1382/*****************************************************************************/
1128 1383
1384#if EV_CHILD_ENABLE
1129static WL childs [EV_PID_HASHSIZE]; 1385static WL childs [EV_PID_HASHSIZE];
1130
1131#ifndef _WIN32
1132 1386
1133static ev_signal childev; 1387static ev_signal childev;
1134 1388
1135#ifndef WIFCONTINUED 1389#ifndef WIFCONTINUED
1136# define WIFCONTINUED(status) 0 1390# define WIFCONTINUED(status) 0
1137#endif 1391#endif
1138 1392
1139void inline_speed 1393/* handle a single child status event */
1394inline_speed void
1140child_reap (EV_P_ int chain, int pid, int status) 1395child_reap (EV_P_ int chain, int pid, int status)
1141{ 1396{
1142 ev_child *w; 1397 ev_child *w;
1143 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1398 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144 1399
1145 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1400 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1146 { 1401 {
1147 if ((w->pid == pid || !w->pid) 1402 if ((w->pid == pid || !w->pid)
1148 && (!traced || (w->flags & 1))) 1403 && (!traced || (w->flags & 1)))
1149 { 1404 {
1150 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1405 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1157 1412
1158#ifndef WCONTINUED 1413#ifndef WCONTINUED
1159# define WCONTINUED 0 1414# define WCONTINUED 0
1160#endif 1415#endif
1161 1416
1417/* called on sigchld etc., calls waitpid */
1162static void 1418static void
1163childcb (EV_P_ ev_signal *sw, int revents) 1419childcb (EV_P_ ev_signal *sw, int revents)
1164{ 1420{
1165 int pid, status; 1421 int pid, status;
1166 1422
… …
1174 /* make sure we are called again until all children have been reaped */ 1430 /* make sure we are called again until all children have been reaped */
1175 /* we need to do it this way so that the callback gets called before we continue */ 1431 /* we need to do it this way so that the callback gets called before we continue */
1176 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1432 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1177 1433
1178 child_reap (EV_A_ pid, pid, status); 1434 child_reap (EV_A_ pid, pid, status);
1179 if (EV_PID_HASHSIZE > 1) 1435 if ((EV_PID_HASHSIZE) > 1)
1180 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1436 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1181} 1437}
1182 1438
1183#endif 1439#endif
1184 1440
… …
1247 /* kqueue is borked on everything but netbsd apparently */ 1503 /* kqueue is borked on everything but netbsd apparently */
1248 /* it usually doesn't work correctly on anything but sockets and pipes */ 1504 /* it usually doesn't work correctly on anything but sockets and pipes */
1249 flags &= ~EVBACKEND_KQUEUE; 1505 flags &= ~EVBACKEND_KQUEUE;
1250#endif 1506#endif
1251#ifdef __APPLE__ 1507#ifdef __APPLE__
1252 // flags &= ~EVBACKEND_KQUEUE; for documentation 1508 /* only select works correctly on that "unix-certified" platform */
1253 flags &= ~EVBACKEND_POLL; 1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1254#endif 1511#endif
1255 1512
1256 return flags; 1513 return flags;
1257} 1514}
1258 1515
… …
1272ev_backend (EV_P) 1529ev_backend (EV_P)
1273{ 1530{
1274 return backend; 1531 return backend;
1275} 1532}
1276 1533
1534#if EV_FEATURE_API
1277unsigned int 1535unsigned int
1278ev_loop_count (EV_P) 1536ev_loop_count (EV_P)
1279{ 1537{
1280 return loop_count; 1538 return loop_count;
1281} 1539}
1282 1540
1541unsigned int
1542ev_loop_depth (EV_P)
1543{
1544 return loop_depth;
1545}
1546
1283void 1547void
1284ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1548ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1549{
1286 io_blocktime = interval; 1550 io_blocktime = interval;
1287} 1551}
… …
1290ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1554ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1555{
1292 timeout_blocktime = interval; 1556 timeout_blocktime = interval;
1293} 1557}
1294 1558
1559void
1560ev_set_userdata (EV_P_ void *data)
1561{
1562 userdata = data;
1563}
1564
1565void *
1566ev_userdata (EV_P)
1567{
1568 return userdata;
1569}
1570
1571void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1572{
1573 invoke_cb = invoke_pending_cb;
1574}
1575
1576void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1577{
1578 release_cb = release;
1579 acquire_cb = acquire;
1580}
1581#endif
1582
1583/* initialise a loop structure, must be zero-initialised */
1295static void noinline 1584static void noinline
1296loop_init (EV_P_ unsigned int flags) 1585loop_init (EV_P_ unsigned int flags)
1297{ 1586{
1298 if (!backend) 1587 if (!backend)
1299 { 1588 {
1589#if EV_USE_REALTIME
1590 if (!have_realtime)
1591 {
1592 struct timespec ts;
1593
1594 if (!clock_gettime (CLOCK_REALTIME, &ts))
1595 have_realtime = 1;
1596 }
1597#endif
1598
1300#if EV_USE_MONOTONIC 1599#if EV_USE_MONOTONIC
1600 if (!have_monotonic)
1301 { 1601 {
1302 struct timespec ts; 1602 struct timespec ts;
1603
1303 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1604 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304 have_monotonic = 1; 1605 have_monotonic = 1;
1305 } 1606 }
1306#endif 1607#endif
1608
1609 /* pid check not overridable via env */
1610#ifndef _WIN32
1611 if (flags & EVFLAG_FORKCHECK)
1612 curpid = getpid ();
1613#endif
1614
1615 if (!(flags & EVFLAG_NOENV)
1616 && !enable_secure ()
1617 && getenv ("LIBEV_FLAGS"))
1618 flags = atoi (getenv ("LIBEV_FLAGS"));
1307 1619
1308 ev_rt_now = ev_time (); 1620 ev_rt_now = ev_time ();
1309 mn_now = get_clock (); 1621 mn_now = get_clock ();
1310 now_floor = mn_now; 1622 now_floor = mn_now;
1311 rtmn_diff = ev_rt_now - mn_now; 1623 rtmn_diff = ev_rt_now - mn_now;
1624#if EV_FEATURE_API
1625 invoke_cb = ev_invoke_pending;
1626#endif
1312 1627
1313 io_blocktime = 0.; 1628 io_blocktime = 0.;
1314 timeout_blocktime = 0.; 1629 timeout_blocktime = 0.;
1315 backend = 0; 1630 backend = 0;
1316 backend_fd = -1; 1631 backend_fd = -1;
1317 gotasync = 0; 1632 sig_pending = 0;
1633#if EV_ASYNC_ENABLE
1634 async_pending = 0;
1635#endif
1318#if EV_USE_INOTIFY 1636#if EV_USE_INOTIFY
1319 fs_fd = -2; 1637 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1320#endif 1638#endif
1321 1639#if EV_USE_SIGNALFD
1322 /* pid check not overridable via env */ 1640 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1323#ifndef _WIN32
1324 if (flags & EVFLAG_FORKCHECK)
1325 curpid = getpid ();
1326#endif 1641#endif
1327
1328 if (!(flags & EVFLAG_NOENV)
1329 && !enable_secure ()
1330 && getenv ("LIBEV_FLAGS"))
1331 flags = atoi (getenv ("LIBEV_FLAGS"));
1332 1642
1333 if (!(flags & 0x0000ffffU)) 1643 if (!(flags & 0x0000ffffU))
1334 flags |= ev_recommended_backends (); 1644 flags |= ev_recommended_backends ();
1335 1645
1336#if EV_USE_PORT 1646#if EV_USE_PORT
… …
1347#endif 1657#endif
1348#if EV_USE_SELECT 1658#if EV_USE_SELECT
1349 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1659 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350#endif 1660#endif
1351 1661
1662 ev_prepare_init (&pending_w, pendingcb);
1663
1664#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1352 ev_init (&pipeev, pipecb); 1665 ev_init (&pipe_w, pipecb);
1353 ev_set_priority (&pipeev, EV_MAXPRI); 1666 ev_set_priority (&pipe_w, EV_MAXPRI);
1667#endif
1354 } 1668 }
1355} 1669}
1356 1670
1671/* free up a loop structure */
1357static void noinline 1672static void noinline
1358loop_destroy (EV_P) 1673loop_destroy (EV_P)
1359{ 1674{
1360 int i; 1675 int i;
1361 1676
1362 if (ev_is_active (&pipeev)) 1677 if (ev_is_active (&pipe_w))
1363 { 1678 {
1364 ev_ref (EV_A); /* signal watcher */ 1679 /*ev_ref (EV_A);*/
1365 ev_io_stop (EV_A_ &pipeev); 1680 /*ev_io_stop (EV_A_ &pipe_w);*/
1366 1681
1367#if EV_USE_EVENTFD 1682#if EV_USE_EVENTFD
1368 if (evfd >= 0) 1683 if (evfd >= 0)
1369 close (evfd); 1684 close (evfd);
1370#endif 1685#endif
1371 1686
1372 if (evpipe [0] >= 0) 1687 if (evpipe [0] >= 0)
1373 { 1688 {
1374 close (evpipe [0]); 1689 EV_WIN32_CLOSE_FD (evpipe [0]);
1375 close (evpipe [1]); 1690 EV_WIN32_CLOSE_FD (evpipe [1]);
1376 } 1691 }
1377 } 1692 }
1693
1694#if EV_USE_SIGNALFD
1695 if (ev_is_active (&sigfd_w))
1696 close (sigfd);
1697#endif
1378 1698
1379#if EV_USE_INOTIFY 1699#if EV_USE_INOTIFY
1380 if (fs_fd >= 0) 1700 if (fs_fd >= 0)
1381 close (fs_fd); 1701 close (fs_fd);
1382#endif 1702#endif
… …
1406#if EV_IDLE_ENABLE 1726#if EV_IDLE_ENABLE
1407 array_free (idle, [i]); 1727 array_free (idle, [i]);
1408#endif 1728#endif
1409 } 1729 }
1410 1730
1411 ev_free (anfds); anfdmax = 0; 1731 ev_free (anfds); anfds = 0; anfdmax = 0;
1412 1732
1413 /* have to use the microsoft-never-gets-it-right macro */ 1733 /* have to use the microsoft-never-gets-it-right macro */
1734 array_free (rfeed, EMPTY);
1414 array_free (fdchange, EMPTY); 1735 array_free (fdchange, EMPTY);
1415 array_free (timer, EMPTY); 1736 array_free (timer, EMPTY);
1416#if EV_PERIODIC_ENABLE 1737#if EV_PERIODIC_ENABLE
1417 array_free (periodic, EMPTY); 1738 array_free (periodic, EMPTY);
1418#endif 1739#endif
… …
1427 1748
1428 backend = 0; 1749 backend = 0;
1429} 1750}
1430 1751
1431#if EV_USE_INOTIFY 1752#if EV_USE_INOTIFY
1432void inline_size infy_fork (EV_P); 1753inline_size void infy_fork (EV_P);
1433#endif 1754#endif
1434 1755
1435void inline_size 1756inline_size void
1436loop_fork (EV_P) 1757loop_fork (EV_P)
1437{ 1758{
1438#if EV_USE_PORT 1759#if EV_USE_PORT
1439 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1760 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440#endif 1761#endif
… …
1446#endif 1767#endif
1447#if EV_USE_INOTIFY 1768#if EV_USE_INOTIFY
1448 infy_fork (EV_A); 1769 infy_fork (EV_A);
1449#endif 1770#endif
1450 1771
1451 if (ev_is_active (&pipeev)) 1772 if (ev_is_active (&pipe_w))
1452 { 1773 {
1453 /* this "locks" the handlers against writing to the pipe */ 1774 /* this "locks" the handlers against writing to the pipe */
1454 /* while we modify the fd vars */ 1775 /* while we modify the fd vars */
1455 gotsig = 1; 1776 sig_pending = 1;
1456#if EV_ASYNC_ENABLE 1777#if EV_ASYNC_ENABLE
1457 gotasync = 1; 1778 async_pending = 1;
1458#endif 1779#endif
1459 1780
1460 ev_ref (EV_A); 1781 ev_ref (EV_A);
1461 ev_io_stop (EV_A_ &pipeev); 1782 ev_io_stop (EV_A_ &pipe_w);
1462 1783
1463#if EV_USE_EVENTFD 1784#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1785 if (evfd >= 0)
1465 close (evfd); 1786 close (evfd);
1466#endif 1787#endif
1467 1788
1468 if (evpipe [0] >= 0) 1789 if (evpipe [0] >= 0)
1469 { 1790 {
1470 close (evpipe [0]); 1791 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 1792 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 1793 }
1473 1794
1795#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1474 evpipe_init (EV_A); 1796 evpipe_init (EV_A);
1475 /* now iterate over everything, in case we missed something */ 1797 /* now iterate over everything, in case we missed something */
1476 pipecb (EV_A_ &pipeev, EV_READ); 1798 pipecb (EV_A_ &pipe_w, EV_READ);
1799#endif
1477 } 1800 }
1478 1801
1479 postfork = 0; 1802 postfork = 0;
1480} 1803}
1481 1804
1482#if EV_MULTIPLICITY 1805#if EV_MULTIPLICITY
1806
1483struct ev_loop * 1807struct ev_loop *
1484ev_loop_new (unsigned int flags) 1808ev_loop_new (unsigned int flags)
1485{ 1809{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1810 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 1811
1488 memset (loop, 0, sizeof (struct ev_loop)); 1812 memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 1813 loop_init (EV_A_ flags);
1491 1814
1492 if (ev_backend (EV_A)) 1815 if (ev_backend (EV_A))
1493 return loop; 1816 return EV_A;
1494 1817
1495 return 0; 1818 return 0;
1496} 1819}
1497 1820
1498void 1821void
… …
1505void 1828void
1506ev_loop_fork (EV_P) 1829ev_loop_fork (EV_P)
1507{ 1830{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1831 postfork = 1; /* must be in line with ev_default_fork */
1509} 1832}
1833#endif /* multiplicity */
1510 1834
1511#if EV_VERIFY 1835#if EV_VERIFY
1512static void 1836static void noinline
1837verify_watcher (EV_P_ W w)
1838{
1839 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1840
1841 if (w->pending)
1842 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1843}
1844
1845static void noinline
1846verify_heap (EV_P_ ANHE *heap, int N)
1847{
1848 int i;
1849
1850 for (i = HEAP0; i < N + HEAP0; ++i)
1851 {
1852 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1853 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1854 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1855
1856 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1857 }
1858}
1859
1860static void noinline
1513array_check (W **ws, int cnt) 1861array_verify (EV_P_ W *ws, int cnt)
1514{ 1862{
1515 while (cnt--) 1863 while (cnt--)
1864 {
1516 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1865 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1866 verify_watcher (EV_A_ ws [cnt]);
1867 }
1517} 1868}
1869#endif
1518 1870
1519static void 1871#if EV_FEATURE_API
1872void
1520ev_loop_verify (EV_P) 1873ev_loop_verify (EV_P)
1521{ 1874{
1875#if EV_VERIFY
1522 int i; 1876 int i;
1877 WL w;
1523 1878
1879 assert (activecnt >= -1);
1880
1881 assert (fdchangemax >= fdchangecnt);
1882 for (i = 0; i < fdchangecnt; ++i)
1883 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1884
1885 assert (anfdmax >= 0);
1886 for (i = 0; i < anfdmax; ++i)
1887 for (w = anfds [i].head; w; w = w->next)
1888 {
1889 verify_watcher (EV_A_ (W)w);
1890 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1891 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1892 }
1893
1894 assert (timermax >= timercnt);
1524 checkheap (timers, timercnt); 1895 verify_heap (EV_A_ timers, timercnt);
1896
1525#if EV_PERIODIC_ENABLE 1897#if EV_PERIODIC_ENABLE
1898 assert (periodicmax >= periodiccnt);
1526 checkheap (periodics, periodiccnt); 1899 verify_heap (EV_A_ periodics, periodiccnt);
1527#endif 1900#endif
1528 1901
1902 for (i = NUMPRI; i--; )
1903 {
1904 assert (pendingmax [i] >= pendingcnt [i]);
1529#if EV_IDLE_ENABLE 1905#if EV_IDLE_ENABLE
1530 for (i = NUMPRI; i--; ) 1906 assert (idleall >= 0);
1907 assert (idlemax [i] >= idlecnt [i]);
1531 array_check ((W **)idles [i], idlecnt [i]); 1908 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532#endif 1909#endif
1910 }
1911
1533#if EV_FORK_ENABLE 1912#if EV_FORK_ENABLE
1913 assert (forkmax >= forkcnt);
1534 array_check ((W **)forks, forkcnt); 1914 array_verify (EV_A_ (W *)forks, forkcnt);
1535#endif 1915#endif
1536 array_check ((W **)prepares, preparecnt); 1916
1537 array_check ((W **)checks, checkcnt);
1538#if EV_ASYNC_ENABLE 1917#if EV_ASYNC_ENABLE
1918 assert (asyncmax >= asynccnt);
1539 array_check ((W **)asyncs, asynccnt); 1919 array_verify (EV_A_ (W *)asyncs, asynccnt);
1920#endif
1921
1922#if EV_PREPARE_ENABLE
1923 assert (preparemax >= preparecnt);
1924 array_verify (EV_A_ (W *)prepares, preparecnt);
1925#endif
1926
1927#if EV_CHECK_ENABLE
1928 assert (checkmax >= checkcnt);
1929 array_verify (EV_A_ (W *)checks, checkcnt);
1930#endif
1931
1932# if 0
1933#if EV_CHILD_ENABLE
1934 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1935 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1936#endif
1540#endif 1937# endif
1541}
1542#endif 1938#endif
1543 1939}
1544#endif 1940#endif
1545 1941
1546#if EV_MULTIPLICITY 1942#if EV_MULTIPLICITY
1547struct ev_loop * 1943struct ev_loop *
1548ev_default_loop_init (unsigned int flags) 1944ev_default_loop_init (unsigned int flags)
… …
1552#endif 1948#endif
1553{ 1949{
1554 if (!ev_default_loop_ptr) 1950 if (!ev_default_loop_ptr)
1555 { 1951 {
1556#if EV_MULTIPLICITY 1952#if EV_MULTIPLICITY
1557 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1953 EV_P = ev_default_loop_ptr = &default_loop_struct;
1558#else 1954#else
1559 ev_default_loop_ptr = 1; 1955 ev_default_loop_ptr = 1;
1560#endif 1956#endif
1561 1957
1562 loop_init (EV_A_ flags); 1958 loop_init (EV_A_ flags);
1563 1959
1564 if (ev_backend (EV_A)) 1960 if (ev_backend (EV_A))
1565 { 1961 {
1566#ifndef _WIN32 1962#if EV_CHILD_ENABLE
1567 ev_signal_init (&childev, childcb, SIGCHLD); 1963 ev_signal_init (&childev, childcb, SIGCHLD);
1568 ev_set_priority (&childev, EV_MAXPRI); 1964 ev_set_priority (&childev, EV_MAXPRI);
1569 ev_signal_start (EV_A_ &childev); 1965 ev_signal_start (EV_A_ &childev);
1570 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1966 ev_unref (EV_A); /* child watcher should not keep loop alive */
1571#endif 1967#endif
… …
1579 1975
1580void 1976void
1581ev_default_destroy (void) 1977ev_default_destroy (void)
1582{ 1978{
1583#if EV_MULTIPLICITY 1979#if EV_MULTIPLICITY
1584 struct ev_loop *loop = ev_default_loop_ptr; 1980 EV_P = ev_default_loop_ptr;
1585#endif 1981#endif
1586 1982
1587#ifndef _WIN32 1983 ev_default_loop_ptr = 0;
1984
1985#if EV_CHILD_ENABLE
1588 ev_ref (EV_A); /* child watcher */ 1986 ev_ref (EV_A); /* child watcher */
1589 ev_signal_stop (EV_A_ &childev); 1987 ev_signal_stop (EV_A_ &childev);
1590#endif 1988#endif
1591 1989
1592 loop_destroy (EV_A); 1990 loop_destroy (EV_A);
… …
1594 1992
1595void 1993void
1596ev_default_fork (void) 1994ev_default_fork (void)
1597{ 1995{
1598#if EV_MULTIPLICITY 1996#if EV_MULTIPLICITY
1599 struct ev_loop *loop = ev_default_loop_ptr; 1997 EV_P = ev_default_loop_ptr;
1600#endif 1998#endif
1601 1999
1602 if (backend)
1603 postfork = 1; /* must be in line with ev_loop_fork */ 2000 postfork = 1; /* must be in line with ev_loop_fork */
1604} 2001}
1605 2002
1606/*****************************************************************************/ 2003/*****************************************************************************/
1607 2004
1608void 2005void
1609ev_invoke (EV_P_ void *w, int revents) 2006ev_invoke (EV_P_ void *w, int revents)
1610{ 2007{
1611 EV_CB_INVOKE ((W)w, revents); 2008 EV_CB_INVOKE ((W)w, revents);
1612} 2009}
1613 2010
1614void inline_speed 2011unsigned int
1615call_pending (EV_P) 2012ev_pending_count (EV_P)
1616{ 2013{
1617 int pri; 2014 int pri;
2015 unsigned int count = 0;
1618 2016
1619 EV_FREQUENT_CHECK; 2017 for (pri = NUMPRI; pri--; )
2018 count += pendingcnt [pri];
2019
2020 return count;
2021}
2022
2023void noinline
2024ev_invoke_pending (EV_P)
2025{
2026 int pri;
1620 2027
1621 for (pri = NUMPRI; pri--; ) 2028 for (pri = NUMPRI; pri--; )
1622 while (pendingcnt [pri]) 2029 while (pendingcnt [pri])
1623 { 2030 {
1624 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2031 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625 2032
1626 if (expect_true (p->w))
1627 {
1628 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2033 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2034 /* ^ this is no longer true, as pending_w could be here */
1629 2035
1630 p->w->pending = 0; 2036 p->w->pending = 0;
1631 EV_CB_INVOKE (p->w, p->events); 2037 EV_CB_INVOKE (p->w, p->events);
1632 } 2038 EV_FREQUENT_CHECK;
1633 } 2039 }
1634
1635 EV_FREQUENT_CHECK;
1636} 2040}
1637 2041
1638#if EV_IDLE_ENABLE 2042#if EV_IDLE_ENABLE
1639void inline_size 2043/* make idle watchers pending. this handles the "call-idle */
2044/* only when higher priorities are idle" logic */
2045inline_size void
1640idle_reify (EV_P) 2046idle_reify (EV_P)
1641{ 2047{
1642 if (expect_false (idleall)) 2048 if (expect_false (idleall))
1643 { 2049 {
1644 int pri; 2050 int pri;
… …
1656 } 2062 }
1657 } 2063 }
1658} 2064}
1659#endif 2065#endif
1660 2066
1661void inline_size 2067/* make timers pending */
2068inline_size void
1662timers_reify (EV_P) 2069timers_reify (EV_P)
1663{ 2070{
1664 EV_FREQUENT_CHECK; 2071 EV_FREQUENT_CHECK;
1665 2072
1666 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2073 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667 { 2074 {
1668 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2075 do
1669
1670 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1671
1672 /* first reschedule or stop timer */
1673 if (w->repeat)
1674 { 2076 {
2077 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2078
2079 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2080
2081 /* first reschedule or stop timer */
2082 if (w->repeat)
2083 {
1675 ev_at (w) += w->repeat; 2084 ev_at (w) += w->repeat;
1676 if (ev_at (w) < mn_now) 2085 if (ev_at (w) < mn_now)
1677 ev_at (w) = mn_now; 2086 ev_at (w) = mn_now;
1678 2087
1679 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2088 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1680 2089
1681 ANHE_at_cache (timers [HEAP0]); 2090 ANHE_at_cache (timers [HEAP0]);
1682 downheap (timers, timercnt, HEAP0); 2091 downheap (timers, timercnt, HEAP0);
2092 }
2093 else
2094 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2095
2096 EV_FREQUENT_CHECK;
2097 feed_reverse (EV_A_ (W)w);
1683 } 2098 }
1684 else 2099 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1685 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1686 2100
1687 EV_FREQUENT_CHECK;
1688 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2101 feed_reverse_done (EV_A_ EV_TIMEOUT);
1689 } 2102 }
1690} 2103}
1691 2104
1692#if EV_PERIODIC_ENABLE 2105#if EV_PERIODIC_ENABLE
1693void inline_size 2106/* make periodics pending */
2107inline_size void
1694periodics_reify (EV_P) 2108periodics_reify (EV_P)
1695{ 2109{
1696 EV_FREQUENT_CHECK; 2110 EV_FREQUENT_CHECK;
2111
1697 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2112 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698 { 2113 {
1699 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2114 int feed_count = 0;
1700 2115
1701 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2116 do
1702
1703 /* first reschedule or stop timer */
1704 if (w->reschedule_cb)
1705 { 2117 {
2118 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2119
2120 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2121
2122 /* first reschedule or stop timer */
2123 if (w->reschedule_cb)
2124 {
1706 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2125 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 2126
1708 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2127 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1709 2128
1710 ANHE_at_cache (periodics [HEAP0]); 2129 ANHE_at_cache (periodics [HEAP0]);
1711 downheap (periodics, periodiccnt, HEAP0); 2130 downheap (periodics, periodiccnt, HEAP0);
2131 }
2132 else if (w->interval)
2133 {
2134 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2135 /* if next trigger time is not sufficiently in the future, put it there */
2136 /* this might happen because of floating point inexactness */
2137 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2138 {
2139 ev_at (w) += w->interval;
2140
2141 /* if interval is unreasonably low we might still have a time in the past */
2142 /* so correct this. this will make the periodic very inexact, but the user */
2143 /* has effectively asked to get triggered more often than possible */
2144 if (ev_at (w) < ev_rt_now)
2145 ev_at (w) = ev_rt_now;
2146 }
2147
2148 ANHE_at_cache (periodics [HEAP0]);
2149 downheap (periodics, periodiccnt, HEAP0);
2150 }
2151 else
2152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2153
1712 EV_FREQUENT_CHECK; 2154 EV_FREQUENT_CHECK;
2155 feed_reverse (EV_A_ (W)w);
1713 } 2156 }
1714 else if (w->interval) 2157 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1715 {
1716 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717 /* if next trigger time is not sufficiently in the future, put it there */
1718 /* this might happen because of floating point inexactness */
1719 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1720 {
1721 ev_at (w) += w->interval;
1722 2158
1723 /* if interval is unreasonably low we might still have a time in the past */
1724 /* so correct this. this will make the periodic very inexact, but the user */
1725 /* has effectively asked to get triggered more often than possible */
1726 if (ev_at (w) < ev_rt_now)
1727 ev_at (w) = ev_rt_now;
1728 }
1729
1730 ANHE_at_cache (periodics [HEAP0]);
1731 downheap (periodics, periodiccnt, HEAP0);
1732 }
1733 else
1734 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1735
1736 EV_FREQUENT_CHECK;
1737 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2159 feed_reverse_done (EV_A_ EV_PERIODIC);
1738 } 2160 }
1739} 2161}
1740 2162
2163/* simply recalculate all periodics */
2164/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1741static void noinline 2165static void noinline
1742periodics_reschedule (EV_P) 2166periodics_reschedule (EV_P)
1743{ 2167{
1744 int i; 2168 int i;
1745 2169
… …
1758 2182
1759 reheap (periodics, periodiccnt); 2183 reheap (periodics, periodiccnt);
1760} 2184}
1761#endif 2185#endif
1762 2186
1763void inline_speed 2187/* adjust all timers by a given offset */
2188static void noinline
2189timers_reschedule (EV_P_ ev_tstamp adjust)
2190{
2191 int i;
2192
2193 for (i = 0; i < timercnt; ++i)
2194 {
2195 ANHE *he = timers + i + HEAP0;
2196 ANHE_w (*he)->at += adjust;
2197 ANHE_at_cache (*he);
2198 }
2199}
2200
2201/* fetch new monotonic and realtime times from the kernel */
2202/* also detect if there was a timejump, and act accordingly */
2203inline_speed void
1764time_update (EV_P_ ev_tstamp max_block) 2204time_update (EV_P_ ev_tstamp max_block)
1765{ 2205{
1766 int i;
1767
1768#if EV_USE_MONOTONIC 2206#if EV_USE_MONOTONIC
1769 if (expect_true (have_monotonic)) 2207 if (expect_true (have_monotonic))
1770 { 2208 {
2209 int i;
1771 ev_tstamp odiff = rtmn_diff; 2210 ev_tstamp odiff = rtmn_diff;
1772 2211
1773 mn_now = get_clock (); 2212 mn_now = get_clock ();
1774 2213
1775 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2214 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1801 ev_rt_now = ev_time (); 2240 ev_rt_now = ev_time ();
1802 mn_now = get_clock (); 2241 mn_now = get_clock ();
1803 now_floor = mn_now; 2242 now_floor = mn_now;
1804 } 2243 }
1805 2244
2245 /* no timer adjustment, as the monotonic clock doesn't jump */
2246 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1806# if EV_PERIODIC_ENABLE 2247# if EV_PERIODIC_ENABLE
1807 periodics_reschedule (EV_A); 2248 periodics_reschedule (EV_A);
1808# endif 2249# endif
1809 /* no timer adjustment, as the monotonic clock doesn't jump */
1810 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811 } 2250 }
1812 else 2251 else
1813#endif 2252#endif
1814 { 2253 {
1815 ev_rt_now = ev_time (); 2254 ev_rt_now = ev_time ();
1816 2255
1817 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2256 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1818 { 2257 {
2258 /* adjust timers. this is easy, as the offset is the same for all of them */
2259 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1819#if EV_PERIODIC_ENABLE 2260#if EV_PERIODIC_ENABLE
1820 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1821#endif 2262#endif
1822 /* adjust timers. this is easy, as the offset is the same for all of them */
1823 for (i = 0; i < timercnt; ++i)
1824 {
1825 ANHE *he = timers + i + HEAP0;
1826 ANHE_w (*he)->at += ev_rt_now - mn_now;
1827 ANHE_at_cache (*he);
1828 }
1829 } 2263 }
1830 2264
1831 mn_now = ev_rt_now; 2265 mn_now = ev_rt_now;
1832 } 2266 }
1833} 2267}
1834 2268
1835void 2269void
1836ev_ref (EV_P)
1837{
1838 ++activecnt;
1839}
1840
1841void
1842ev_unref (EV_P)
1843{
1844 --activecnt;
1845}
1846
1847static int loop_done;
1848
1849void
1850ev_loop (EV_P_ int flags) 2270ev_loop (EV_P_ int flags)
1851{ 2271{
2272#if EV_FEATURE_API
2273 ++loop_depth;
2274#endif
2275
2276 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2277
1852 loop_done = EVUNLOOP_CANCEL; 2278 loop_done = EVUNLOOP_CANCEL;
1853 2279
1854 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2280 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1855 2281
1856 do 2282 do
1857 { 2283 {
2284#if EV_VERIFY >= 2
2285 ev_loop_verify (EV_A);
2286#endif
2287
1858#ifndef _WIN32 2288#ifndef _WIN32
1859 if (expect_false (curpid)) /* penalise the forking check even more */ 2289 if (expect_false (curpid)) /* penalise the forking check even more */
1860 if (expect_false (getpid () != curpid)) 2290 if (expect_false (getpid () != curpid))
1861 { 2291 {
1862 curpid = getpid (); 2292 curpid = getpid ();
… …
1868 /* we might have forked, so queue fork handlers */ 2298 /* we might have forked, so queue fork handlers */
1869 if (expect_false (postfork)) 2299 if (expect_false (postfork))
1870 if (forkcnt) 2300 if (forkcnt)
1871 { 2301 {
1872 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2302 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1873 call_pending (EV_A); 2303 EV_INVOKE_PENDING;
1874 } 2304 }
1875#endif 2305#endif
1876 2306
2307#if EV_PREPARE_ENABLE
1877 /* queue prepare watchers (and execute them) */ 2308 /* queue prepare watchers (and execute them) */
1878 if (expect_false (preparecnt)) 2309 if (expect_false (preparecnt))
1879 { 2310 {
1880 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2311 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1881 call_pending (EV_A); 2312 EV_INVOKE_PENDING;
1882 } 2313 }
2314#endif
1883 2315
1884 if (expect_false (!activecnt)) 2316 if (expect_false (loop_done))
1885 break; 2317 break;
1886 2318
1887 /* we might have forked, so reify kernel state if necessary */ 2319 /* we might have forked, so reify kernel state if necessary */
1888 if (expect_false (postfork)) 2320 if (expect_false (postfork))
1889 loop_fork (EV_A); 2321 loop_fork (EV_A);
… …
1896 ev_tstamp waittime = 0.; 2328 ev_tstamp waittime = 0.;
1897 ev_tstamp sleeptime = 0.; 2329 ev_tstamp sleeptime = 0.;
1898 2330
1899 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1900 { 2332 {
2333 /* remember old timestamp for io_blocktime calculation */
2334 ev_tstamp prev_mn_now = mn_now;
2335
1901 /* update time to cancel out callback processing overhead */ 2336 /* update time to cancel out callback processing overhead */
1902 time_update (EV_A_ 1e100); 2337 time_update (EV_A_ 1e100);
1903 2338
1904 waittime = MAX_BLOCKTIME; 2339 waittime = MAX_BLOCKTIME;
1905 2340
… …
1915 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1916 if (waittime > to) waittime = to; 2351 if (waittime > to) waittime = to;
1917 } 2352 }
1918#endif 2353#endif
1919 2354
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */
1920 if (expect_false (waittime < timeout_blocktime)) 2356 if (expect_false (waittime < timeout_blocktime))
1921 waittime = timeout_blocktime; 2357 waittime = timeout_blocktime;
1922 2358
1923 sleeptime = waittime - backend_fudge; 2359 /* extra check because io_blocktime is commonly 0 */
1924
1925 if (expect_true (sleeptime > io_blocktime)) 2360 if (expect_false (io_blocktime))
1926 sleeptime = io_blocktime;
1927
1928 if (sleeptime)
1929 { 2361 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363
2364 if (sleeptime > waittime - backend_fudge)
2365 sleeptime = waittime - backend_fudge;
2366
2367 if (expect_true (sleeptime > 0.))
2368 {
1930 ev_sleep (sleeptime); 2369 ev_sleep (sleeptime);
1931 waittime -= sleeptime; 2370 waittime -= sleeptime;
2371 }
1932 } 2372 }
1933 } 2373 }
1934 2374
2375#if EV_FEATURE_API
1935 ++loop_count; 2376 ++loop_count;
2377#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1936 backend_poll (EV_A_ waittime); 2379 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1937 2381
1938 /* update ev_rt_now, do magic */ 2382 /* update ev_rt_now, do magic */
1939 time_update (EV_A_ waittime + sleeptime); 2383 time_update (EV_A_ waittime + sleeptime);
1940 } 2384 }
1941 2385
… …
1948#if EV_IDLE_ENABLE 2392#if EV_IDLE_ENABLE
1949 /* queue idle watchers unless other events are pending */ 2393 /* queue idle watchers unless other events are pending */
1950 idle_reify (EV_A); 2394 idle_reify (EV_A);
1951#endif 2395#endif
1952 2396
2397#if EV_CHECK_ENABLE
1953 /* queue check watchers, to be executed first */ 2398 /* queue check watchers, to be executed first */
1954 if (expect_false (checkcnt)) 2399 if (expect_false (checkcnt))
1955 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2400 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2401#endif
1956 2402
1957 call_pending (EV_A); 2403 EV_INVOKE_PENDING;
1958 } 2404 }
1959 while (expect_true ( 2405 while (expect_true (
1960 activecnt 2406 activecnt
1961 && !loop_done 2407 && !loop_done
1962 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2408 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1963 )); 2409 ));
1964 2410
1965 if (loop_done == EVUNLOOP_ONE) 2411 if (loop_done == EVUNLOOP_ONE)
1966 loop_done = EVUNLOOP_CANCEL; 2412 loop_done = EVUNLOOP_CANCEL;
2413
2414#if EV_FEATURE_API
2415 --loop_depth;
2416#endif
1967} 2417}
1968 2418
1969void 2419void
1970ev_unloop (EV_P_ int how) 2420ev_unloop (EV_P_ int how)
1971{ 2421{
1972 loop_done = how; 2422 loop_done = how;
1973} 2423}
1974 2424
2425void
2426ev_ref (EV_P)
2427{
2428 ++activecnt;
2429}
2430
2431void
2432ev_unref (EV_P)
2433{
2434 --activecnt;
2435}
2436
2437void
2438ev_now_update (EV_P)
2439{
2440 time_update (EV_A_ 1e100);
2441}
2442
2443void
2444ev_suspend (EV_P)
2445{
2446 ev_now_update (EV_A);
2447}
2448
2449void
2450ev_resume (EV_P)
2451{
2452 ev_tstamp mn_prev = mn_now;
2453
2454 ev_now_update (EV_A);
2455 timers_reschedule (EV_A_ mn_now - mn_prev);
2456#if EV_PERIODIC_ENABLE
2457 /* TODO: really do this? */
2458 periodics_reschedule (EV_A);
2459#endif
2460}
2461
1975/*****************************************************************************/ 2462/*****************************************************************************/
2463/* singly-linked list management, used when the expected list length is short */
1976 2464
1977void inline_size 2465inline_size void
1978wlist_add (WL *head, WL elem) 2466wlist_add (WL *head, WL elem)
1979{ 2467{
1980 elem->next = *head; 2468 elem->next = *head;
1981 *head = elem; 2469 *head = elem;
1982} 2470}
1983 2471
1984void inline_size 2472inline_size void
1985wlist_del (WL *head, WL elem) 2473wlist_del (WL *head, WL elem)
1986{ 2474{
1987 while (*head) 2475 while (*head)
1988 { 2476 {
1989 if (*head == elem) 2477 if (expect_true (*head == elem))
1990 { 2478 {
1991 *head = elem->next; 2479 *head = elem->next;
1992 return; 2480 break;
1993 } 2481 }
1994 2482
1995 head = &(*head)->next; 2483 head = &(*head)->next;
1996 } 2484 }
1997} 2485}
1998 2486
1999void inline_speed 2487/* internal, faster, version of ev_clear_pending */
2488inline_speed void
2000clear_pending (EV_P_ W w) 2489clear_pending (EV_P_ W w)
2001{ 2490{
2002 if (w->pending) 2491 if (w->pending)
2003 { 2492 {
2004 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2493 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2005 w->pending = 0; 2494 w->pending = 0;
2006 } 2495 }
2007} 2496}
2008 2497
2009int 2498int
… …
2013 int pending = w_->pending; 2502 int pending = w_->pending;
2014 2503
2015 if (expect_true (pending)) 2504 if (expect_true (pending))
2016 { 2505 {
2017 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2506 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2507 p->w = (W)&pending_w;
2018 w_->pending = 0; 2508 w_->pending = 0;
2019 p->w = 0;
2020 return p->events; 2509 return p->events;
2021 } 2510 }
2022 else 2511 else
2023 return 0; 2512 return 0;
2024} 2513}
2025 2514
2026void inline_size 2515inline_size void
2027pri_adjust (EV_P_ W w) 2516pri_adjust (EV_P_ W w)
2028{ 2517{
2029 int pri = w->priority; 2518 int pri = ev_priority (w);
2030 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2519 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2031 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2520 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2032 w->priority = pri; 2521 ev_set_priority (w, pri);
2033} 2522}
2034 2523
2035void inline_speed 2524inline_speed void
2036ev_start (EV_P_ W w, int active) 2525ev_start (EV_P_ W w, int active)
2037{ 2526{
2038 pri_adjust (EV_A_ w); 2527 pri_adjust (EV_A_ w);
2039 w->active = active; 2528 w->active = active;
2040 ev_ref (EV_A); 2529 ev_ref (EV_A);
2041} 2530}
2042 2531
2043void inline_size 2532inline_size void
2044ev_stop (EV_P_ W w) 2533ev_stop (EV_P_ W w)
2045{ 2534{
2046 ev_unref (EV_A); 2535 ev_unref (EV_A);
2047 w->active = 0; 2536 w->active = 0;
2048} 2537}
… …
2055 int fd = w->fd; 2544 int fd = w->fd;
2056 2545
2057 if (expect_false (ev_is_active (w))) 2546 if (expect_false (ev_is_active (w)))
2058 return; 2547 return;
2059 2548
2060 assert (("ev_io_start called with negative fd", fd >= 0)); 2549 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2550 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2061 2551
2062 EV_FREQUENT_CHECK; 2552 EV_FREQUENT_CHECK;
2063 2553
2064 ev_start (EV_A_ (W)w, 1); 2554 ev_start (EV_A_ (W)w, 1);
2065 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2555 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066 wlist_add (&anfds[fd].head, (WL)w); 2556 wlist_add (&anfds[fd].head, (WL)w);
2067 2557
2068 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2558 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2069 w->events &= ~EV_IOFDSET; 2559 w->events &= ~EV__IOFDSET;
2070 2560
2071 EV_FREQUENT_CHECK; 2561 EV_FREQUENT_CHECK;
2072} 2562}
2073 2563
2074void noinline 2564void noinline
… …
2076{ 2566{
2077 clear_pending (EV_A_ (W)w); 2567 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 2568 if (expect_false (!ev_is_active (w)))
2079 return; 2569 return;
2080 2570
2081 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2571 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2082 2572
2083 EV_FREQUENT_CHECK; 2573 EV_FREQUENT_CHECK;
2084 2574
2085 wlist_del (&anfds[w->fd].head, (WL)w); 2575 wlist_del (&anfds[w->fd].head, (WL)w);
2086 ev_stop (EV_A_ (W)w); 2576 ev_stop (EV_A_ (W)w);
… …
2096 if (expect_false (ev_is_active (w))) 2586 if (expect_false (ev_is_active (w)))
2097 return; 2587 return;
2098 2588
2099 ev_at (w) += mn_now; 2589 ev_at (w) += mn_now;
2100 2590
2101 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2591 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2102 2592
2103 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2104 2594
2105 ++timercnt; 2595 ++timercnt;
2106 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2596 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2109 ANHE_at_cache (timers [ev_active (w)]); 2599 ANHE_at_cache (timers [ev_active (w)]);
2110 upheap (timers, ev_active (w)); 2600 upheap (timers, ev_active (w));
2111 2601
2112 EV_FREQUENT_CHECK; 2602 EV_FREQUENT_CHECK;
2113 2603
2114 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2604 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2115} 2605}
2116 2606
2117void noinline 2607void noinline
2118ev_timer_stop (EV_P_ ev_timer *w) 2608ev_timer_stop (EV_P_ ev_timer *w)
2119{ 2609{
… …
2124 EV_FREQUENT_CHECK; 2614 EV_FREQUENT_CHECK;
2125 2615
2126 { 2616 {
2127 int active = ev_active (w); 2617 int active = ev_active (w);
2128 2618
2129 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2619 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130 2620
2131 --timercnt; 2621 --timercnt;
2132 2622
2133 if (expect_true (active < timercnt + HEAP0)) 2623 if (expect_true (active < timercnt + HEAP0))
2134 { 2624 {
2135 timers [active] = timers [timercnt + HEAP0]; 2625 timers [active] = timers [timercnt + HEAP0];
2136 adjustheap (timers, timercnt, active); 2626 adjustheap (timers, timercnt, active);
2137 } 2627 }
2138 } 2628 }
2139 2629
2140 EV_FREQUENT_CHECK;
2141
2142 ev_at (w) -= mn_now; 2630 ev_at (w) -= mn_now;
2143 2631
2144 ev_stop (EV_A_ (W)w); 2632 ev_stop (EV_A_ (W)w);
2633
2634 EV_FREQUENT_CHECK;
2145} 2635}
2146 2636
2147void noinline 2637void noinline
2148ev_timer_again (EV_P_ ev_timer *w) 2638ev_timer_again (EV_P_ ev_timer *w)
2149{ 2639{
… …
2167 } 2657 }
2168 2658
2169 EV_FREQUENT_CHECK; 2659 EV_FREQUENT_CHECK;
2170} 2660}
2171 2661
2662ev_tstamp
2663ev_timer_remaining (EV_P_ ev_timer *w)
2664{
2665 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2666}
2667
2172#if EV_PERIODIC_ENABLE 2668#if EV_PERIODIC_ENABLE
2173void noinline 2669void noinline
2174ev_periodic_start (EV_P_ ev_periodic *w) 2670ev_periodic_start (EV_P_ ev_periodic *w)
2175{ 2671{
2176 if (expect_false (ev_is_active (w))) 2672 if (expect_false (ev_is_active (w)))
… …
2178 2674
2179 if (w->reschedule_cb) 2675 if (w->reschedule_cb)
2180 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2676 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181 else if (w->interval) 2677 else if (w->interval)
2182 { 2678 {
2183 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2184 /* this formula differs from the one in periodic_reify because we do not always round up */ 2680 /* this formula differs from the one in periodic_reify because we do not always round up */
2185 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186 } 2682 }
2187 else 2683 else
2188 ev_at (w) = w->offset; 2684 ev_at (w) = w->offset;
… …
2196 ANHE_at_cache (periodics [ev_active (w)]); 2692 ANHE_at_cache (periodics [ev_active (w)]);
2197 upheap (periodics, ev_active (w)); 2693 upheap (periodics, ev_active (w));
2198 2694
2199 EV_FREQUENT_CHECK; 2695 EV_FREQUENT_CHECK;
2200 2696
2201 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2697 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2202} 2698}
2203 2699
2204void noinline 2700void noinline
2205ev_periodic_stop (EV_P_ ev_periodic *w) 2701ev_periodic_stop (EV_P_ ev_periodic *w)
2206{ 2702{
… …
2211 EV_FREQUENT_CHECK; 2707 EV_FREQUENT_CHECK;
2212 2708
2213 { 2709 {
2214 int active = ev_active (w); 2710 int active = ev_active (w);
2215 2711
2216 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2712 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217 2713
2218 --periodiccnt; 2714 --periodiccnt;
2219 2715
2220 if (expect_true (active < periodiccnt + HEAP0)) 2716 if (expect_true (active < periodiccnt + HEAP0))
2221 { 2717 {
2222 periodics [active] = periodics [periodiccnt + HEAP0]; 2718 periodics [active] = periodics [periodiccnt + HEAP0];
2223 adjustheap (periodics, periodiccnt, active); 2719 adjustheap (periodics, periodiccnt, active);
2224 } 2720 }
2225 } 2721 }
2226 2722
2227 EV_FREQUENT_CHECK;
2228
2229 ev_stop (EV_A_ (W)w); 2723 ev_stop (EV_A_ (W)w);
2724
2725 EV_FREQUENT_CHECK;
2230} 2726}
2231 2727
2232void noinline 2728void noinline
2233ev_periodic_again (EV_P_ ev_periodic *w) 2729ev_periodic_again (EV_P_ ev_periodic *w)
2234{ 2730{
… …
2240 2736
2241#ifndef SA_RESTART 2737#ifndef SA_RESTART
2242# define SA_RESTART 0 2738# define SA_RESTART 0
2243#endif 2739#endif
2244 2740
2741#if EV_SIGNAL_ENABLE
2742
2245void noinline 2743void noinline
2246ev_signal_start (EV_P_ ev_signal *w) 2744ev_signal_start (EV_P_ ev_signal *w)
2247{ 2745{
2248#if EV_MULTIPLICITY
2249 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2250#endif
2251 if (expect_false (ev_is_active (w))) 2746 if (expect_false (ev_is_active (w)))
2252 return; 2747 return;
2253 2748
2254 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2749 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2255 2750
2256 evpipe_init (EV_A); 2751#if EV_MULTIPLICITY
2752 assert (("libev: a signal must not be attached to two different loops",
2753 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2257 2754
2258 EV_FREQUENT_CHECK; 2755 signals [w->signum - 1].loop = EV_A;
2756#endif
2259 2757
2758 EV_FREQUENT_CHECK;
2759
2760#if EV_USE_SIGNALFD
2761 if (sigfd == -2)
2260 { 2762 {
2261#ifndef _WIN32 2763 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2262 sigset_t full, prev; 2764 if (sigfd < 0 && errno == EINVAL)
2263 sigfillset (&full); 2765 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2264 sigprocmask (SIG_SETMASK, &full, &prev);
2265#endif
2266 2766
2267 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2767 if (sigfd >= 0)
2768 {
2769 fd_intern (sigfd); /* doing it twice will not hurt */
2268 2770
2269#ifndef _WIN32 2771 sigemptyset (&sigfd_set);
2270 sigprocmask (SIG_SETMASK, &prev, 0); 2772
2271#endif 2773 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2774 ev_set_priority (&sigfd_w, EV_MAXPRI);
2775 ev_io_start (EV_A_ &sigfd_w);
2776 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2777 }
2272 } 2778 }
2779
2780 if (sigfd >= 0)
2781 {
2782 /* TODO: check .head */
2783 sigaddset (&sigfd_set, w->signum);
2784 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2785
2786 signalfd (sigfd, &sigfd_set, 0);
2787 }
2788#endif
2273 2789
2274 ev_start (EV_A_ (W)w, 1); 2790 ev_start (EV_A_ (W)w, 1);
2275 wlist_add (&signals [w->signum - 1].head, (WL)w); 2791 wlist_add (&signals [w->signum - 1].head, (WL)w);
2276 2792
2277 if (!((WL)w)->next) 2793 if (!((WL)w)->next)
2794# if EV_USE_SIGNALFD
2795 if (sigfd < 0) /*TODO*/
2796# endif
2278 { 2797 {
2279#if _WIN32 2798# ifdef _WIN32
2799 evpipe_init (EV_A);
2800
2280 signal (w->signum, ev_sighandler); 2801 signal (w->signum, ev_sighandler);
2281#else 2802# else
2282 struct sigaction sa; 2803 struct sigaction sa;
2804
2805 evpipe_init (EV_A);
2806
2283 sa.sa_handler = ev_sighandler; 2807 sa.sa_handler = ev_sighandler;
2284 sigfillset (&sa.sa_mask); 2808 sigfillset (&sa.sa_mask);
2285 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2286 sigaction (w->signum, &sa, 0); 2810 sigaction (w->signum, &sa, 0);
2811
2812 sigemptyset (&sa.sa_mask);
2813 sigaddset (&sa.sa_mask, w->signum);
2814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2287#endif 2815#endif
2288 } 2816 }
2289 2817
2290 EV_FREQUENT_CHECK; 2818 EV_FREQUENT_CHECK;
2291} 2819}
2292 2820
2293void noinline 2821void noinline
… …
2301 2829
2302 wlist_del (&signals [w->signum - 1].head, (WL)w); 2830 wlist_del (&signals [w->signum - 1].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2304 2832
2305 if (!signals [w->signum - 1].head) 2833 if (!signals [w->signum - 1].head)
2834 {
2835#if EV_MULTIPLICITY
2836 signals [w->signum - 1].loop = 0; /* unattach from signal */
2837#endif
2838#if EV_USE_SIGNALFD
2839 if (sigfd >= 0)
2840 {
2841 sigset_t ss;
2842
2843 sigemptyset (&ss);
2844 sigaddset (&ss, w->signum);
2845 sigdelset (&sigfd_set, w->signum);
2846
2847 signalfd (sigfd, &sigfd_set, 0);
2848 sigprocmask (SIG_UNBLOCK, &ss, 0);
2849 }
2850 else
2851#endif
2306 signal (w->signum, SIG_DFL); 2852 signal (w->signum, SIG_DFL);
2853 }
2307 2854
2308 EV_FREQUENT_CHECK; 2855 EV_FREQUENT_CHECK;
2309} 2856}
2857
2858#endif
2859
2860#if EV_CHILD_ENABLE
2310 2861
2311void 2862void
2312ev_child_start (EV_P_ ev_child *w) 2863ev_child_start (EV_P_ ev_child *w)
2313{ 2864{
2314#if EV_MULTIPLICITY 2865#if EV_MULTIPLICITY
2315 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2866 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316#endif 2867#endif
2317 if (expect_false (ev_is_active (w))) 2868 if (expect_false (ev_is_active (w)))
2318 return; 2869 return;
2319 2870
2320 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2321 2872
2322 ev_start (EV_A_ (W)w, 1); 2873 ev_start (EV_A_ (W)w, 1);
2323 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2874 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2324 2875
2325 EV_FREQUENT_CHECK; 2876 EV_FREQUENT_CHECK;
2326} 2877}
2327 2878
2328void 2879void
… …
2332 if (expect_false (!ev_is_active (w))) 2883 if (expect_false (!ev_is_active (w)))
2333 return; 2884 return;
2334 2885
2335 EV_FREQUENT_CHECK; 2886 EV_FREQUENT_CHECK;
2336 2887
2337 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2888 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2338 ev_stop (EV_A_ (W)w); 2889 ev_stop (EV_A_ (W)w);
2339 2890
2340 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2341} 2892}
2893
2894#endif
2342 2895
2343#if EV_STAT_ENABLE 2896#if EV_STAT_ENABLE
2344 2897
2345# ifdef _WIN32 2898# ifdef _WIN32
2346# undef lstat 2899# undef lstat
2347# define lstat(a,b) _stati64 (a,b) 2900# define lstat(a,b) _stati64 (a,b)
2348# endif 2901# endif
2349 2902
2350#define DEF_STAT_INTERVAL 5.0074891 2903#define DEF_STAT_INTERVAL 5.0074891
2904#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2351#define MIN_STAT_INTERVAL 0.1074891 2905#define MIN_STAT_INTERVAL 0.1074891
2352 2906
2353static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2907static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2354 2908
2355#if EV_USE_INOTIFY 2909#if EV_USE_INOTIFY
2356# define EV_INOTIFY_BUFSIZE 8192 2910
2911/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2912# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2357 2913
2358static void noinline 2914static void noinline
2359infy_add (EV_P_ ev_stat *w) 2915infy_add (EV_P_ ev_stat *w)
2360{ 2916{
2361 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); 2917 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);
2362 2918
2363 if (w->wd < 0) 2919 if (w->wd >= 0)
2920 {
2921 struct statfs sfs;
2922
2923 /* now local changes will be tracked by inotify, but remote changes won't */
2924 /* unless the filesystem is known to be local, we therefore still poll */
2925 /* also do poll on <2.6.25, but with normal frequency */
2926
2927 if (!fs_2625)
2928 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2929 else if (!statfs (w->path, &sfs)
2930 && (sfs.f_type == 0x1373 /* devfs */
2931 || sfs.f_type == 0xEF53 /* ext2/3 */
2932 || sfs.f_type == 0x3153464a /* jfs */
2933 || sfs.f_type == 0x52654973 /* reiser3 */
2934 || sfs.f_type == 0x01021994 /* tempfs */
2935 || sfs.f_type == 0x58465342 /* xfs */))
2936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2937 else
2938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2364 { 2939 }
2365 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2940 else
2941 {
2942 /* can't use inotify, continue to stat */
2943 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2366 2944
2367 /* monitor some parent directory for speedup hints */ 2945 /* if path is not there, monitor some parent directory for speedup hints */
2368 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2946 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2369 /* but an efficiency issue only */ 2947 /* but an efficiency issue only */
2370 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2948 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2371 { 2949 {
2372 char path [4096]; 2950 char path [4096];
2373 strcpy (path, w->path); 2951 strcpy (path, w->path);
… …
2377 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2955 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2378 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2956 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2379 2957
2380 char *pend = strrchr (path, '/'); 2958 char *pend = strrchr (path, '/');
2381 2959
2382 if (!pend) 2960 if (!pend || pend == path)
2383 break; /* whoops, no '/', complain to your admin */ 2961 break;
2384 2962
2385 *pend = 0; 2963 *pend = 0;
2386 w->wd = inotify_add_watch (fs_fd, path, mask); 2964 w->wd = inotify_add_watch (fs_fd, path, mask);
2387 } 2965 }
2388 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2389 } 2967 }
2390 } 2968 }
2391 else
2392 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393 2969
2394 if (w->wd >= 0) 2970 if (w->wd >= 0)
2395 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2971 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2972
2973 /* now re-arm timer, if required */
2974 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2975 ev_timer_again (EV_A_ &w->timer);
2976 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2396} 2977}
2397 2978
2398static void noinline 2979static void noinline
2399infy_del (EV_P_ ev_stat *w) 2980infy_del (EV_P_ ev_stat *w)
2400{ 2981{
… …
2403 2984
2404 if (wd < 0) 2985 if (wd < 0)
2405 return; 2986 return;
2406 2987
2407 w->wd = -2; 2988 w->wd = -2;
2408 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 2989 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2409 wlist_del (&fs_hash [slot].head, (WL)w); 2990 wlist_del (&fs_hash [slot].head, (WL)w);
2410 2991
2411 /* remove this watcher, if others are watching it, they will rearm */ 2992 /* remove this watcher, if others are watching it, they will rearm */
2412 inotify_rm_watch (fs_fd, wd); 2993 inotify_rm_watch (fs_fd, wd);
2413} 2994}
2414 2995
2415static void noinline 2996static void noinline
2416infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2997infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417{ 2998{
2418 if (slot < 0) 2999 if (slot < 0)
2419 /* overflow, need to check for all hahs slots */ 3000 /* overflow, need to check for all hash slots */
2420 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3001 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2421 infy_wd (EV_A_ slot, wd, ev); 3002 infy_wd (EV_A_ slot, wd, ev);
2422 else 3003 else
2423 { 3004 {
2424 WL w_; 3005 WL w_;
2425 3006
2426 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3007 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2427 { 3008 {
2428 ev_stat *w = (ev_stat *)w_; 3009 ev_stat *w = (ev_stat *)w_;
2429 w_ = w_->next; /* lets us remove this watcher and all before it */ 3010 w_ = w_->next; /* lets us remove this watcher and all before it */
2430 3011
2431 if (w->wd == wd || wd == -1) 3012 if (w->wd == wd || wd == -1)
2432 { 3013 {
2433 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3014 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2434 { 3015 {
3016 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2435 w->wd = -1; 3017 w->wd = -1;
2436 infy_add (EV_A_ w); /* re-add, no matter what */ 3018 infy_add (EV_A_ w); /* re-add, no matter what */
2437 } 3019 }
2438 3020
2439 stat_timer_cb (EV_A_ &w->timer, 0); 3021 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2444 3026
2445static void 3027static void
2446infy_cb (EV_P_ ev_io *w, int revents) 3028infy_cb (EV_P_ ev_io *w, int revents)
2447{ 3029{
2448 char buf [EV_INOTIFY_BUFSIZE]; 3030 char buf [EV_INOTIFY_BUFSIZE];
2449 struct inotify_event *ev = (struct inotify_event *)buf;
2450 int ofs; 3031 int ofs;
2451 int len = read (fs_fd, buf, sizeof (buf)); 3032 int len = read (fs_fd, buf, sizeof (buf));
2452 3033
2453 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3034 for (ofs = 0; ofs < len; )
3035 {
3036 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2454 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3037 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038 ofs += sizeof (struct inotify_event) + ev->len;
3039 }
2455} 3040}
2456 3041
2457void inline_size 3042inline_size unsigned int
3043ev_linux_version (void)
3044{
3045 struct utsname buf;
3046 unsigned int v;
3047 int i;
3048 char *p = buf.release;
3049
3050 if (uname (&buf))
3051 return 0;
3052
3053 for (i = 3+1; --i; )
3054 {
3055 unsigned int c = 0;
3056
3057 for (;;)
3058 {
3059 if (*p >= '0' && *p <= '9')
3060 c = c * 10 + *p++ - '0';
3061 else
3062 {
3063 p += *p == '.';
3064 break;
3065 }
3066 }
3067
3068 v = (v << 8) | c;
3069 }
3070
3071 return v;
3072}
3073
3074inline_size void
3075ev_check_2625 (EV_P)
3076{
3077 /* kernels < 2.6.25 are borked
3078 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3079 */
3080 if (ev_linux_version () < 0x020619)
3081 return;
3082
3083 fs_2625 = 1;
3084}
3085
3086inline_size int
3087infy_newfd (void)
3088{
3089#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3090 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3091 if (fd >= 0)
3092 return fd;
3093#endif
3094 return inotify_init ();
3095}
3096
3097inline_size void
2458infy_init (EV_P) 3098infy_init (EV_P)
2459{ 3099{
2460 if (fs_fd != -2) 3100 if (fs_fd != -2)
2461 return; 3101 return;
2462 3102
3103 fs_fd = -1;
3104
3105 ev_check_2625 (EV_A);
3106
2463 fs_fd = inotify_init (); 3107 fs_fd = infy_newfd ();
2464 3108
2465 if (fs_fd >= 0) 3109 if (fs_fd >= 0)
2466 { 3110 {
3111 fd_intern (fs_fd);
2467 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3112 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2468 ev_set_priority (&fs_w, EV_MAXPRI); 3113 ev_set_priority (&fs_w, EV_MAXPRI);
2469 ev_io_start (EV_A_ &fs_w); 3114 ev_io_start (EV_A_ &fs_w);
3115 ev_unref (EV_A);
2470 } 3116 }
2471} 3117}
2472 3118
2473void inline_size 3119inline_size void
2474infy_fork (EV_P) 3120infy_fork (EV_P)
2475{ 3121{
2476 int slot; 3122 int slot;
2477 3123
2478 if (fs_fd < 0) 3124 if (fs_fd < 0)
2479 return; 3125 return;
2480 3126
3127 ev_ref (EV_A);
3128 ev_io_stop (EV_A_ &fs_w);
2481 close (fs_fd); 3129 close (fs_fd);
2482 fs_fd = inotify_init (); 3130 fs_fd = infy_newfd ();
2483 3131
3132 if (fs_fd >= 0)
3133 {
3134 fd_intern (fs_fd);
3135 ev_io_set (&fs_w, fs_fd, EV_READ);
3136 ev_io_start (EV_A_ &fs_w);
3137 ev_unref (EV_A);
3138 }
3139
2484 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3140 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2485 { 3141 {
2486 WL w_ = fs_hash [slot].head; 3142 WL w_ = fs_hash [slot].head;
2487 fs_hash [slot].head = 0; 3143 fs_hash [slot].head = 0;
2488 3144
2489 while (w_) 3145 while (w_)
… …
2494 w->wd = -1; 3150 w->wd = -1;
2495 3151
2496 if (fs_fd >= 0) 3152 if (fs_fd >= 0)
2497 infy_add (EV_A_ w); /* re-add, no matter what */ 3153 infy_add (EV_A_ w); /* re-add, no matter what */
2498 else 3154 else
3155 {
3156 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3157 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2499 ev_timer_start (EV_A_ &w->timer); 3158 ev_timer_again (EV_A_ &w->timer);
3159 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3160 }
2500 } 3161 }
2501
2502 } 3162 }
2503} 3163}
2504 3164
3165#endif
3166
3167#ifdef _WIN32
3168# define EV_LSTAT(p,b) _stati64 (p, b)
3169#else
3170# define EV_LSTAT(p,b) lstat (p, b)
2505#endif 3171#endif
2506 3172
2507void 3173void
2508ev_stat_stat (EV_P_ ev_stat *w) 3174ev_stat_stat (EV_P_ ev_stat *w)
2509{ 3175{
… …
2516static void noinline 3182static void noinline
2517stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3183stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2518{ 3184{
2519 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3185 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2520 3186
2521 /* we copy this here each the time so that */ 3187 ev_statdata prev = w->attr;
2522 /* prev has the old value when the callback gets invoked */
2523 w->prev = w->attr;
2524 ev_stat_stat (EV_A_ w); 3188 ev_stat_stat (EV_A_ w);
2525 3189
2526 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3190 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2527 if ( 3191 if (
2528 w->prev.st_dev != w->attr.st_dev 3192 prev.st_dev != w->attr.st_dev
2529 || w->prev.st_ino != w->attr.st_ino 3193 || prev.st_ino != w->attr.st_ino
2530 || w->prev.st_mode != w->attr.st_mode 3194 || prev.st_mode != w->attr.st_mode
2531 || w->prev.st_nlink != w->attr.st_nlink 3195 || prev.st_nlink != w->attr.st_nlink
2532 || w->prev.st_uid != w->attr.st_uid 3196 || prev.st_uid != w->attr.st_uid
2533 || w->prev.st_gid != w->attr.st_gid 3197 || prev.st_gid != w->attr.st_gid
2534 || w->prev.st_rdev != w->attr.st_rdev 3198 || prev.st_rdev != w->attr.st_rdev
2535 || w->prev.st_size != w->attr.st_size 3199 || prev.st_size != w->attr.st_size
2536 || w->prev.st_atime != w->attr.st_atime 3200 || prev.st_atime != w->attr.st_atime
2537 || w->prev.st_mtime != w->attr.st_mtime 3201 || prev.st_mtime != w->attr.st_mtime
2538 || w->prev.st_ctime != w->attr.st_ctime 3202 || prev.st_ctime != w->attr.st_ctime
2539 ) { 3203 ) {
3204 /* we only update w->prev on actual differences */
3205 /* in case we test more often than invoke the callback, */
3206 /* to ensure that prev is always different to attr */
3207 w->prev = prev;
3208
2540 #if EV_USE_INOTIFY 3209 #if EV_USE_INOTIFY
3210 if (fs_fd >= 0)
3211 {
2541 infy_del (EV_A_ w); 3212 infy_del (EV_A_ w);
2542 infy_add (EV_A_ w); 3213 infy_add (EV_A_ w);
2543 ev_stat_stat (EV_A_ w); /* avoid race... */ 3214 ev_stat_stat (EV_A_ w); /* avoid race... */
3215 }
2544 #endif 3216 #endif
2545 3217
2546 ev_feed_event (EV_A_ w, EV_STAT); 3218 ev_feed_event (EV_A_ w, EV_STAT);
2547 } 3219 }
2548} 3220}
… …
2551ev_stat_start (EV_P_ ev_stat *w) 3223ev_stat_start (EV_P_ ev_stat *w)
2552{ 3224{
2553 if (expect_false (ev_is_active (w))) 3225 if (expect_false (ev_is_active (w)))
2554 return; 3226 return;
2555 3227
2556 /* since we use memcmp, we need to clear any padding data etc. */
2557 memset (&w->prev, 0, sizeof (ev_statdata));
2558 memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560 ev_stat_stat (EV_A_ w); 3228 ev_stat_stat (EV_A_ w);
2561 3229
3230 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562 if (w->interval < MIN_STAT_INTERVAL) 3231 w->interval = MIN_STAT_INTERVAL;
2563 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564 3232
2565 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3233 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2566 ev_set_priority (&w->timer, ev_priority (w)); 3234 ev_set_priority (&w->timer, ev_priority (w));
2567 3235
2568#if EV_USE_INOTIFY 3236#if EV_USE_INOTIFY
2569 infy_init (EV_A); 3237 infy_init (EV_A);
2570 3238
2571 if (fs_fd >= 0) 3239 if (fs_fd >= 0)
2572 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
2573 else 3241 else
2574#endif 3242#endif
3243 {
2575 ev_timer_start (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 ev_unref (EV_A);
3246 }
2576 3247
2577 ev_start (EV_A_ (W)w, 1); 3248 ev_start (EV_A_ (W)w, 1);
2578 3249
2579 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2580} 3251}
… …
2589 EV_FREQUENT_CHECK; 3260 EV_FREQUENT_CHECK;
2590 3261
2591#if EV_USE_INOTIFY 3262#if EV_USE_INOTIFY
2592 infy_del (EV_A_ w); 3263 infy_del (EV_A_ w);
2593#endif 3264#endif
3265
3266 if (ev_is_active (&w->timer))
3267 {
3268 ev_ref (EV_A);
2594 ev_timer_stop (EV_A_ &w->timer); 3269 ev_timer_stop (EV_A_ &w->timer);
3270 }
2595 3271
2596 ev_stop (EV_A_ (W)w); 3272 ev_stop (EV_A_ (W)w);
2597 3273
2598 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2599} 3275}
… …
2644 3320
2645 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
2646} 3322}
2647#endif 3323#endif
2648 3324
3325#if EV_PREPARE_ENABLE
2649void 3326void
2650ev_prepare_start (EV_P_ ev_prepare *w) 3327ev_prepare_start (EV_P_ ev_prepare *w)
2651{ 3328{
2652 if (expect_false (ev_is_active (w))) 3329 if (expect_false (ev_is_active (w)))
2653 return; 3330 return;
… …
2679 3356
2680 ev_stop (EV_A_ (W)w); 3357 ev_stop (EV_A_ (W)w);
2681 3358
2682 EV_FREQUENT_CHECK; 3359 EV_FREQUENT_CHECK;
2683} 3360}
3361#endif
2684 3362
3363#if EV_CHECK_ENABLE
2685void 3364void
2686ev_check_start (EV_P_ ev_check *w) 3365ev_check_start (EV_P_ ev_check *w)
2687{ 3366{
2688 if (expect_false (ev_is_active (w))) 3367 if (expect_false (ev_is_active (w)))
2689 return; 3368 return;
… …
2715 3394
2716 ev_stop (EV_A_ (W)w); 3395 ev_stop (EV_A_ (W)w);
2717 3396
2718 EV_FREQUENT_CHECK; 3397 EV_FREQUENT_CHECK;
2719} 3398}
3399#endif
2720 3400
2721#if EV_EMBED_ENABLE 3401#if EV_EMBED_ENABLE
2722void noinline 3402void noinline
2723ev_embed_sweep (EV_P_ ev_embed *w) 3403ev_embed_sweep (EV_P_ ev_embed *w)
2724{ 3404{
… …
2740embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3420embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2741{ 3421{
2742 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3422 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2743 3423
2744 { 3424 {
2745 struct ev_loop *loop = w->other; 3425 EV_P = w->other;
2746 3426
2747 while (fdchangecnt) 3427 while (fdchangecnt)
2748 { 3428 {
2749 fd_reify (EV_A); 3429 fd_reify (EV_A);
2750 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3430 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751 } 3431 }
2752 } 3432 }
2753} 3433}
2754 3434
3435static void
3436embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3437{
3438 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3439
3440 ev_embed_stop (EV_A_ w);
3441
3442 {
3443 EV_P = w->other;
3444
3445 ev_loop_fork (EV_A);
3446 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3447 }
3448
3449 ev_embed_start (EV_A_ w);
3450}
3451
2755#if 0 3452#if 0
2756static void 3453static void
2757embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3454embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758{ 3455{
2759 ev_idle_stop (EV_A_ idle); 3456 ev_idle_stop (EV_A_ idle);
… …
2765{ 3462{
2766 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2767 return; 3464 return;
2768 3465
2769 { 3466 {
2770 struct ev_loop *loop = w->other; 3467 EV_P = w->other;
2771 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3468 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2772 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3469 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2773 } 3470 }
2774 3471
2775 EV_FREQUENT_CHECK; 3472 EV_FREQUENT_CHECK;
2776 3473
… …
2779 3476
2780 ev_prepare_init (&w->prepare, embed_prepare_cb); 3477 ev_prepare_init (&w->prepare, embed_prepare_cb);
2781 ev_set_priority (&w->prepare, EV_MINPRI); 3478 ev_set_priority (&w->prepare, EV_MINPRI);
2782 ev_prepare_start (EV_A_ &w->prepare); 3479 ev_prepare_start (EV_A_ &w->prepare);
2783 3480
3481 ev_fork_init (&w->fork, embed_fork_cb);
3482 ev_fork_start (EV_A_ &w->fork);
3483
2784 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3484 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2785 3485
2786 ev_start (EV_A_ (W)w, 1); 3486 ev_start (EV_A_ (W)w, 1);
2787 3487
2788 EV_FREQUENT_CHECK; 3488 EV_FREQUENT_CHECK;
… …
2795 if (expect_false (!ev_is_active (w))) 3495 if (expect_false (!ev_is_active (w)))
2796 return; 3496 return;
2797 3497
2798 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2799 3499
2800 ev_io_stop (EV_A_ &w->io); 3500 ev_io_stop (EV_A_ &w->io);
2801 ev_prepare_stop (EV_A_ &w->prepare); 3501 ev_prepare_stop (EV_A_ &w->prepare);
3502 ev_fork_stop (EV_A_ &w->fork);
2802 3503
2803 ev_stop (EV_A_ (W)w); 3504 ev_stop (EV_A_ (W)w);
2804 3505
2805 EV_FREQUENT_CHECK; 3506 EV_FREQUENT_CHECK;
2806} 3507}
… …
2885 3586
2886void 3587void
2887ev_async_send (EV_P_ ev_async *w) 3588ev_async_send (EV_P_ ev_async *w)
2888{ 3589{
2889 w->sent = 1; 3590 w->sent = 1;
2890 evpipe_write (EV_A_ &gotasync); 3591 evpipe_write (EV_A_ &async_pending);
2891} 3592}
2892#endif 3593#endif
2893 3594
2894/*****************************************************************************/ 3595/*****************************************************************************/
2895 3596
… …
2905once_cb (EV_P_ struct ev_once *once, int revents) 3606once_cb (EV_P_ struct ev_once *once, int revents)
2906{ 3607{
2907 void (*cb)(int revents, void *arg) = once->cb; 3608 void (*cb)(int revents, void *arg) = once->cb;
2908 void *arg = once->arg; 3609 void *arg = once->arg;
2909 3610
2910 ev_io_stop (EV_A_ &once->io); 3611 ev_io_stop (EV_A_ &once->io);
2911 ev_timer_stop (EV_A_ &once->to); 3612 ev_timer_stop (EV_A_ &once->to);
2912 ev_free (once); 3613 ev_free (once);
2913 3614
2914 cb (revents, arg); 3615 cb (revents, arg);
2915} 3616}
2916 3617
2917static void 3618static void
2918once_cb_io (EV_P_ ev_io *w, int revents) 3619once_cb_io (EV_P_ ev_io *w, int revents)
2919{ 3620{
2920 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3621 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3622
3623 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2921} 3624}
2922 3625
2923static void 3626static void
2924once_cb_to (EV_P_ ev_timer *w, int revents) 3627once_cb_to (EV_P_ ev_timer *w, int revents)
2925{ 3628{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3629 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3630
3631 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2927} 3632}
2928 3633
2929void 3634void
2930ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3635ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2931{ 3636{
… …
2953 ev_timer_set (&once->to, timeout, 0.); 3658 ev_timer_set (&once->to, timeout, 0.);
2954 ev_timer_start (EV_A_ &once->to); 3659 ev_timer_start (EV_A_ &once->to);
2955 } 3660 }
2956} 3661}
2957 3662
3663/*****************************************************************************/
3664
3665#if EV_WALK_ENABLE
3666void
3667ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3668{
3669 int i, j;
3670 ev_watcher_list *wl, *wn;
3671
3672 if (types & (EV_IO | EV_EMBED))
3673 for (i = 0; i < anfdmax; ++i)
3674 for (wl = anfds [i].head; wl; )
3675 {
3676 wn = wl->next;
3677
3678#if EV_EMBED_ENABLE
3679 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3680 {
3681 if (types & EV_EMBED)
3682 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3683 }
3684 else
3685#endif
3686#if EV_USE_INOTIFY
3687 if (ev_cb ((ev_io *)wl) == infy_cb)
3688 ;
3689 else
3690#endif
3691 if ((ev_io *)wl != &pipe_w)
3692 if (types & EV_IO)
3693 cb (EV_A_ EV_IO, wl);
3694
3695 wl = wn;
3696 }
3697
3698 if (types & (EV_TIMER | EV_STAT))
3699 for (i = timercnt + HEAP0; i-- > HEAP0; )
3700#if EV_STAT_ENABLE
3701 /*TODO: timer is not always active*/
3702 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3703 {
3704 if (types & EV_STAT)
3705 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3706 }
3707 else
3708#endif
3709 if (types & EV_TIMER)
3710 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3711
3712#if EV_PERIODIC_ENABLE
3713 if (types & EV_PERIODIC)
3714 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3715 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3716#endif
3717
3718#if EV_IDLE_ENABLE
3719 if (types & EV_IDLE)
3720 for (j = NUMPRI; i--; )
3721 for (i = idlecnt [j]; i--; )
3722 cb (EV_A_ EV_IDLE, idles [j][i]);
3723#endif
3724
3725#if EV_FORK_ENABLE
3726 if (types & EV_FORK)
3727 for (i = forkcnt; i--; )
3728 if (ev_cb (forks [i]) != embed_fork_cb)
3729 cb (EV_A_ EV_FORK, forks [i]);
3730#endif
3731
3732#if EV_ASYNC_ENABLE
3733 if (types & EV_ASYNC)
3734 for (i = asynccnt; i--; )
3735 cb (EV_A_ EV_ASYNC, asyncs [i]);
3736#endif
3737
3738#if EV_PREPARE_ENABLE
3739 if (types & EV_PREPARE)
3740 for (i = preparecnt; i--; )
3741# if EV_EMBED_ENABLE
3742 if (ev_cb (prepares [i]) != embed_prepare_cb)
3743# endif
3744 cb (EV_A_ EV_PREPARE, prepares [i]);
3745#endif
3746
3747#if EV_CHECK_ENABLE
3748 if (types & EV_CHECK)
3749 for (i = checkcnt; i--; )
3750 cb (EV_A_ EV_CHECK, checks [i]);
3751#endif
3752
3753#if EV_SIGNAL_ENABLE
3754 if (types & EV_SIGNAL)
3755 for (i = 0; i < EV_NSIG - 1; ++i)
3756 for (wl = signals [i].head; wl; )
3757 {
3758 wn = wl->next;
3759 cb (EV_A_ EV_SIGNAL, wl);
3760 wl = wn;
3761 }
3762#endif
3763
3764#if EV_CHILD_ENABLE
3765 if (types & EV_CHILD)
3766 for (i = (EV_PID_HASHSIZE); i--; )
3767 for (wl = childs [i]; wl; )
3768 {
3769 wn = wl->next;
3770 cb (EV_A_ EV_CHILD, wl);
3771 wl = wn;
3772 }
3773#endif
3774/* EV_STAT 0x00001000 /* stat data changed */
3775/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3776}
3777#endif
3778
2958#if EV_MULTIPLICITY 3779#if EV_MULTIPLICITY
2959 #include "ev_wrap.h" 3780 #include "ev_wrap.h"
2960#endif 3781#endif
2961 3782
2962#ifdef __cplusplus 3783#ifdef __cplusplus

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