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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.342 by root, Mon Mar 29 12:40:57 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
299# endif
300#endif
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
237# endif 307# endif
238#endif 308#endif
239 309
240#if 0 /* debugging */ 310#if 0 /* debugging */
241# define EV_VERIFY 3 311# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 312# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 313# define EV_HEAP_CACHE_AT 1
244#endif 314#endif
245 315
246#ifndef EV_VERIFY 316#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 317# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 318#endif
249 319
250#ifndef EV_USE_4HEAP 320#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 321# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 322#endif
253 323
254#ifndef EV_HEAP_CACHE_AT 324#ifndef EV_HEAP_CACHE_AT
255# 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
256#endif 340#endif
257 341
258/* 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
259 349
260#ifndef CLOCK_MONOTONIC 350#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 351# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 352# define EV_USE_MONOTONIC 0
263#endif 353#endif
… …
277# include <sys/select.h> 367# include <sys/select.h>
278# endif 368# endif
279#endif 369#endif
280 370
281#if EV_USE_INOTIFY 371#if EV_USE_INOTIFY
372# include <sys/utsname.h>
373# include <sys/statfs.h>
282# 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
283#endif 380#endif
284 381
285#if EV_SELECT_IS_WINSOCKET 382#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 383# include <winsock.h>
287#endif 384#endif
288 385
289#if EV_USE_EVENTFD 386#if EV_USE_EVENTFD
290/* 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 */
291# 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
292# ifdef __cplusplus 399# ifdef __cplusplus
293extern "C" { 400extern "C" {
294# endif 401# endif
295int eventfd (unsigned int initval, int flags); 402int (eventfd) (unsigned int initval, int flags);
296# ifdef __cplusplus 403# ifdef __cplusplus
297} 404}
298# endif 405# endif
299#endif 406#endif
300 407
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
301/**/ 437/**/
302 438
303#if EV_VERIFY >= 3 439#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 440# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 441#else
306# define EV_FREQUENT_CHECK do { } while (0) 442# define EV_FREQUENT_CHECK do { } while (0)
307#endif 443#endif
308 444
309/* 445/*
… …
316 */ 452 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
318 454
319#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) */
320#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) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 457
323#if __GNUC__ >= 4 458#if __GNUC__ >= 4
324# define expect(expr,value) __builtin_expect ((expr),(value)) 459# define expect(expr,value) __builtin_expect ((expr),(value))
325# define noinline __attribute__ ((noinline)) 460# define noinline __attribute__ ((noinline))
326#else 461#else
… …
333 468
334#define expect_false(expr) expect ((expr) != 0, 0) 469#define expect_false(expr) expect ((expr) != 0, 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 470#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline 471#define inline_size static inline
337 472
338#if EV_MINIMAL 473#if EV_FEATURE_CODE
474# define inline_speed static inline
475#else
339# 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)
340#else 483#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 484# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
485#endif
346 486
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 487#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 488#define EMPTY2(a,b) /* used to suppress some warnings */
349 489
350typedef ev_watcher *W; 490typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 492typedef ev_watcher_time *WT;
353 493
354#define ev_active(w) ((W)(w))->active 494#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 495#define ev_at(w) ((WT)(w))->at
356 496
357#if EV_USE_MONOTONIC 497#if EV_USE_REALTIME
358/* 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 */
359/* 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
360static 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)
361#endif 515#endif
362 516
363#ifdef _WIN32 517#ifdef _WIN32
364# include "ev_win32.c" 518# include "ev_win32.c"
365#endif 519#endif
366 520
367/*****************************************************************************/ 521/*****************************************************************************/
368 522
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
369static void (*syserr_cb)(const char *msg); 531static void (*syserr_cb)(const char *msg);
370 532
371void 533void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 534ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 535{
374 syserr_cb = cb; 536 syserr_cb = cb;
375} 537}
376 538
377static void noinline 539static void noinline
378syserr (const char *msg) 540ev_syserr (const char *msg)
379{ 541{
380 if (!msg) 542 if (!msg)
381 msg = "(libev) system error"; 543 msg = "(libev) system error";
382 544
383 if (syserr_cb) 545 if (syserr_cb)
384 syserr_cb (msg); 546 syserr_cb (msg);
385 else 547 else
386 { 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
387 perror (msg); 557 perror (msg);
558#endif
388 abort (); 559 abort ();
389 } 560 }
390} 561}
391 562
392static void * 563static void *
393ev_realloc_emul (void *ptr, long size) 564ev_realloc_emul (void *ptr, long size)
394{ 565{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
395 /* some systems, notably openbsd and darwin, fail to properly 569 /* some systems, notably openbsd and darwin, fail to properly
396 * 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
397 * the single unix specification, so work around them here. 571 * the single unix specification, so work around them here.
398 */ 572 */
399 573
400 if (size) 574 if (size)
401 return realloc (ptr, size); 575 return realloc (ptr, size);
402 576
403 free (ptr); 577 free (ptr);
404 return 0; 578 return 0;
579#endif
405} 580}
406 581
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 583
409void 584void
… …
417{ 592{
418 ptr = alloc (ptr, size); 593 ptr = alloc (ptr, size);
419 594
420 if (!ptr && size) 595 if (!ptr && size)
421 { 596 {
597#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n");
599#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
601#endif
423 abort (); 602 abort ();
424 } 603 }
425 604
426 return ptr; 605 return ptr;
427} 606}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 608#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 609#define ev_free(ptr) ev_realloc ((ptr), 0)
431 610
432/*****************************************************************************/ 611/*****************************************************************************/
433 612
613/* set in reify when reification needed */
614#define EV_ANFD_REIFY 1
615
616/* file descriptor info structure */
434typedef struct 617typedef struct
435{ 618{
436 WL head; 619 WL head;
437 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 */
438 unsigned char reify; 623 unsigned char unused;
624#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif
439#if EV_SELECT_IS_WINSOCKET 627#if EV_SELECT_IS_WINSOCKET
440 SOCKET handle; 628 SOCKET handle;
441#endif 629#endif
442} ANFD; 630} ANFD;
443 631
632/* stores the pending event set for a given watcher */
444typedef struct 633typedef struct
445{ 634{
446 W w; 635 W w;
447 int events; 636 int events; /* the pending event set for the given watcher */
448} ANPENDING; 637} ANPENDING;
449 638
450#if EV_USE_INOTIFY 639#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 640/* hash table entry per inotify-id */
452typedef struct 641typedef struct
… …
455} ANFS; 644} ANFS;
456#endif 645#endif
457 646
458/* Heap Entry */ 647/* Heap Entry */
459#if EV_HEAP_CACHE_AT 648#if EV_HEAP_CACHE_AT
649 /* a heap element */
460 typedef struct { 650 typedef struct {
461 ev_tstamp at; 651 ev_tstamp at;
462 WT w; 652 WT w;
463 } ANHE; 653 } ANHE;
464 654
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 655 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 656 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #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 */
468#else 658#else
659 /* a heap element */
469 typedef WT ANHE; 660 typedef WT ANHE;
470 661
471 #define ANHE_w(he) (he) 662 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 663 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 664 #define ANHE_at_cache(he)
… …
497 688
498 static int ev_default_loop_ptr; 689 static int ev_default_loop_ptr;
499 690
500#endif 691#endif
501 692
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
502/*****************************************************************************/ 705/*****************************************************************************/
503 706
707#ifndef EV_HAVE_EV_TIME
504ev_tstamp 708ev_tstamp
505ev_time (void) 709ev_time (void)
506{ 710{
507#if EV_USE_REALTIME 711#if EV_USE_REALTIME
712 if (expect_true (have_realtime))
713 {
508 struct timespec ts; 714 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 715 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 716 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 717 }
718#endif
719
512 struct timeval tv; 720 struct timeval tv;
513 gettimeofday (&tv, 0); 721 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 722 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 723}
724#endif
517 725
518ev_tstamp inline_size 726inline_size ev_tstamp
519get_clock (void) 727get_clock (void)
520{ 728{
521#if EV_USE_MONOTONIC 729#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 730 if (expect_true (have_monotonic))
523 { 731 {
… …
556 struct timeval tv; 764 struct timeval tv;
557 765
558 tv.tv_sec = (time_t)delay; 766 tv.tv_sec = (time_t)delay;
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560 768
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 */
561 select (0, 0, 0, 0, &tv); 772 select (0, 0, 0, 0, &tv);
562#endif 773#endif
563 } 774 }
564} 775}
565 776
566/*****************************************************************************/ 777/*****************************************************************************/
567 778
568#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 */
569 780
570int 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
571array_nextsize (int elem, int cur, int cnt) 784array_nextsize (int elem, int cur, int cnt)
572{ 785{
573 int ncur = cur + 1; 786 int ncur = cur + 1;
574 787
575 do 788 do
… …
592array_realloc (int elem, void *base, int *cur, int cnt) 805array_realloc (int elem, void *base, int *cur, int cnt)
593{ 806{
594 *cur = array_nextsize (elem, *cur, cnt); 807 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 808 return ev_realloc (base, elem * *cur);
596} 809}
810
811#define array_init_zero(base,count) \
812 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 813
598#define array_needsize(type,base,cur,cnt,init) \ 814#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 815 if (expect_false ((cnt) > (cur))) \
600 { \ 816 { \
601 int ocur_ = (cur); \ 817 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 829 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 830 }
615#endif 831#endif
616 832
617#define array_free(stem, idx) \ 833#define array_free(stem, idx) \
618 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
619 835
620/*****************************************************************************/ 836/*****************************************************************************/
837
838/* dummy callback for pending events */
839static void noinline
840pendingcb (EV_P_ ev_prepare *w, int revents)
841{
842}
621 843
622void noinline 844void noinline
623ev_feed_event (EV_P_ void *w, int revents) 845ev_feed_event (EV_P_ void *w, int revents)
624{ 846{
625 W w_ = (W)w; 847 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 856 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 857 pendings [pri][w_->pending - 1].events = revents;
636 } 858 }
637} 859}
638 860
639void 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
640queue_events (EV_P_ W *events, int eventcnt, int type) 877queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 878{
642 int i; 879 int i;
643 880
644 for (i = 0; i < eventcnt; ++i) 881 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 882 ev_feed_event (EV_A_ events [i], type);
646} 883}
647 884
648/*****************************************************************************/ 885/*****************************************************************************/
649 886
650void inline_size 887inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 888fd_event_nocheck (EV_P_ int fd, int revents)
665{ 889{
666 ANFD *anfd = anfds + fd; 890 ANFD *anfd = anfds + fd;
667 ev_io *w; 891 ev_io *w;
668 892
669 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)
… …
673 if (ev) 897 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 898 ev_feed_event (EV_A_ (W)w, ev);
675 } 899 }
676} 900}
677 901
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
678void 913void
679ev_feed_fd_event (EV_P_ int fd, int revents) 914ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 915{
681 if (fd >= 0 && fd < anfdmax) 916 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 917 fd_event_nocheck (EV_A_ fd, revents);
683} 918}
684 919
685void inline_size 920/* make sure the external fd watch events are in-sync */
921/* with the kernel/libev internal state */
922inline_size void
686fd_reify (EV_P) 923fd_reify (EV_P)
687{ 924{
688 int i; 925 int i;
689 926
690 for (i = 0; i < fdchangecnt; ++i) 927 for (i = 0; i < fdchangecnt; ++i)
… …
699 events |= (unsigned char)w->events; 936 events |= (unsigned char)w->events;
700 937
701#if EV_SELECT_IS_WINSOCKET 938#if EV_SELECT_IS_WINSOCKET
702 if (events) 939 if (events)
703 { 940 {
704 unsigned long argp; 941 unsigned long arg;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
708 anfd->handle = _get_osfhandle (fd);
709 #endif
710 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));
711 } 944 }
712#endif 945#endif
713 946
714 { 947 {
715 unsigned char o_events = anfd->events; 948 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify; 949 unsigned char o_reify = anfd->reify;
717 950
718 anfd->reify = 0; 951 anfd->reify = 0;
719 anfd->events = events; 952 anfd->events = events;
720 953
721 if (o_events != events || o_reify & EV_IOFDSET) 954 if (o_events != events || o_reify & EV__IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 955 backend_modify (EV_A_ fd, o_events, events);
723 } 956 }
724 } 957 }
725 958
726 fdchangecnt = 0; 959 fdchangecnt = 0;
727} 960}
728 961
729void inline_size 962/* something about the given fd changed */
963inline_size void
730fd_change (EV_P_ int fd, int flags) 964fd_change (EV_P_ int fd, int flags)
731{ 965{
732 unsigned char reify = anfds [fd].reify; 966 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 967 anfds [fd].reify |= flags;
734 968
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 972 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 973 fdchanges [fdchangecnt - 1] = fd;
740 } 974 }
741} 975}
742 976
743void inline_speed 977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void
744fd_kill (EV_P_ int fd) 979fd_kill (EV_P_ int fd)
745{ 980{
746 ev_io *w; 981 ev_io *w;
747 982
748 while ((w = (ev_io *)anfds [fd].head)) 983 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 985 ev_io_stop (EV_A_ w);
751 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);
752 } 987 }
753} 988}
754 989
755int inline_size 990/* check whether the given fd is actually valid, for error recovery */
991inline_size int
756fd_valid (int fd) 992fd_valid (int fd)
757{ 993{
758#ifdef _WIN32 994#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 995 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 996#else
761 return fcntl (fd, F_GETFD) != -1; 997 return fcntl (fd, F_GETFD) != -1;
762#endif 998#endif
763} 999}
764 1000
… …
768{ 1004{
769 int fd; 1005 int fd;
770 1006
771 for (fd = 0; fd < anfdmax; ++fd) 1007 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1008 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1009 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1010 fd_kill (EV_A_ fd);
775} 1011}
776 1012
777/* 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 */
778static void noinline 1014static void noinline
… …
782 1018
783 for (fd = anfdmax; fd--; ) 1019 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1020 if (anfds [fd].events)
785 { 1021 {
786 fd_kill (EV_A_ fd); 1022 fd_kill (EV_A_ fd);
787 return; 1023 break;
788 } 1024 }
789} 1025}
790 1026
791/* 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 */
792static void noinline 1028static void noinline
… …
796 1032
797 for (fd = 0; fd < anfdmax; ++fd) 1033 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1034 if (anfds [fd].events)
799 { 1035 {
800 anfds [fd].events = 0; 1036 anfds [fd].events = 0;
1037 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1038 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 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
803} 1054}
804 1055
805/*****************************************************************************/ 1056/*****************************************************************************/
806 1057
807/* 1058/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1073#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1074#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1075#define UPHEAP_DONE(p,k) ((p) == (k))
825 1076
826/* away from the root */ 1077/* away from the root */
827void inline_speed 1078inline_speed void
828downheap (ANHE *heap, int N, int k) 1079downheap (ANHE *heap, int N, int k)
829{ 1080{
830 ANHE he = heap [k]; 1081 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1082 ANHE *E = heap + N + HEAP0;
832 1083
… …
872#define HEAP0 1 1123#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1124#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1125#define UPHEAP_DONE(p,k) (!(p))
875 1126
876/* away from the root */ 1127/* away from the root */
877void inline_speed 1128inline_speed void
878downheap (ANHE *heap, int N, int k) 1129downheap (ANHE *heap, int N, int k)
879{ 1130{
880 ANHE he = heap [k]; 1131 ANHE he = heap [k];
881 1132
882 for (;;) 1133 for (;;)
883 { 1134 {
884 int c = k << 1; 1135 int c = k << 1;
885 1136
886 if (c > N + HEAP0 - 1) 1137 if (c >= N + HEAP0)
887 break; 1138 break;
888 1139
889 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])
890 ? 1 : 0; 1141 ? 1 : 0;
891 1142
… …
902 ev_active (ANHE_w (he)) = k; 1153 ev_active (ANHE_w (he)) = k;
903} 1154}
904#endif 1155#endif
905 1156
906/* towards the root */ 1157/* towards the root */
907void inline_speed 1158inline_speed void
908upheap (ANHE *heap, int k) 1159upheap (ANHE *heap, int k)
909{ 1160{
910 ANHE he = heap [k]; 1161 ANHE he = heap [k];
911 1162
912 for (;;) 1163 for (;;)
… …
923 1174
924 heap [k] = he; 1175 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1176 ev_active (ANHE_w (he)) = k;
926} 1177}
927 1178
928void inline_size 1179/* move an element suitably so it is in a correct place */
1180inline_size void
929adjustheap (ANHE *heap, int N, int k) 1181adjustheap (ANHE *heap, int N, int k)
930{ 1182{
931 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)]))
932 upheap (heap, k); 1184 upheap (heap, k);
933 else 1185 else
934 downheap (heap, N, k); 1186 downheap (heap, N, k);
935} 1187}
936 1188
937/* 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 */
938void inline_size 1190inline_size void
939reheap (ANHE *heap, int N) 1191reheap (ANHE *heap, int N)
940{ 1192{
941 int i; 1193 int i;
1194
942 /* 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 */
943 /* 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 */
944 for (i = 0; i < N; ++i) 1197 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 1198 upheap (heap, i + HEAP0);
946} 1199}
947 1200
948#if EV_VERIFY
949static void
950checkheap (ANHE *heap, int N)
951{
952 int i;
953
954 for (i = HEAP0; i < N + HEAP0; ++i)
955 {
956 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959 }
960}
961#endif
962
963/*****************************************************************************/ 1201/*****************************************************************************/
964 1202
1203/* associate signal watchers to a signal signal */
965typedef struct 1204typedef struct
966{ 1205{
1206 EV_ATOMIC_T pending;
1207#if EV_MULTIPLICITY
1208 EV_P;
1209#endif
967 WL head; 1210 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1211} ANSIG;
970 1212
971static ANSIG *signals; 1213static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975
976void inline_size
977signals_init (ANSIG *base, int count)
978{
979 while (count--)
980 {
981 base->head = 0;
982 base->gotsig = 0;
983
984 ++base;
985 }
986}
987 1214
988/*****************************************************************************/ 1215/*****************************************************************************/
989 1216
990void inline_speed 1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
991fd_intern (int fd)
992{
993#ifdef _WIN32
994 int arg = 1;
995 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996#else
997 fcntl (fd, F_SETFD, FD_CLOEXEC);
998 fcntl (fd, F_SETFL, O_NONBLOCK);
999#endif
1000}
1001 1218
1002static void noinline 1219static void noinline
1003evpipe_init (EV_P) 1220evpipe_init (EV_P)
1004{ 1221{
1005 if (!ev_is_active (&pipeev)) 1222 if (!ev_is_active (&pipe_w))
1006 { 1223 {
1007#if EV_USE_EVENTFD 1224# if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL)
1008 if ((evfd = eventfd (0, 0)) >= 0) 1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
1009 { 1230 {
1010 evpipe [0] = -1; 1231 evpipe [0] = -1;
1011 fd_intern (evfd); 1232 fd_intern (evfd); /* doing it twice doesn't hurt */
1012 ev_io_set (&pipeev, evfd, EV_READ); 1233 ev_io_set (&pipe_w, evfd, EV_READ);
1013 } 1234 }
1014 else 1235 else
1015#endif 1236# endif
1016 { 1237 {
1017 while (pipe (evpipe)) 1238 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe"); 1239 ev_syserr ("(libev) error creating signal/async pipe");
1019 1240
1020 fd_intern (evpipe [0]); 1241 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]); 1242 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 1243 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023 } 1244 }
1024 1245
1025 ev_io_start (EV_A_ &pipeev); 1246 ev_io_start (EV_A_ &pipe_w);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */ 1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 } 1248 }
1028} 1249}
1029 1250
1030void inline_size 1251inline_size void
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 1253{
1033 if (!*flag) 1254 if (!*flag)
1034 { 1255 {
1035 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;
1036 1258
1037 *flag = 1; 1259 *flag = 1;
1038 1260
1039#if EV_USE_EVENTFD 1261#if EV_USE_EVENTFD
1040 if (evfd >= 0) 1262 if (evfd >= 0)
… …
1042 uint64_t counter = 1; 1264 uint64_t counter = 1;
1043 write (evfd, &counter, sizeof (uint64_t)); 1265 write (evfd, &counter, sizeof (uint64_t));
1044 } 1266 }
1045 else 1267 else
1046#endif 1268#endif
1047 write (evpipe [1], &old_errno, 1); 1269 write (evpipe [1], &dummy, 1);
1048 1270
1049 errno = old_errno; 1271 errno = old_errno;
1050 } 1272 }
1051} 1273}
1052 1274
1275/* called whenever the libev signal pipe */
1276/* got some events (signal, async) */
1053static void 1277static void
1054pipecb (EV_P_ ev_io *iow, int revents) 1278pipecb (EV_P_ ev_io *iow, int revents)
1055{ 1279{
1280 int i;
1281
1056#if EV_USE_EVENTFD 1282#if EV_USE_EVENTFD
1057 if (evfd >= 0) 1283 if (evfd >= 0)
1058 { 1284 {
1059 uint64_t counter; 1285 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t)); 1286 read (evfd, &counter, sizeof (uint64_t));
… …
1064 { 1290 {
1065 char dummy; 1291 char dummy;
1066 read (evpipe [0], &dummy, 1); 1292 read (evpipe [0], &dummy, 1);
1067 } 1293 }
1068 1294
1069 if (gotsig && ev_is_default_loop (EV_A)) 1295 if (sig_pending)
1070 { 1296 {
1071 int signum; 1297 sig_pending = 0;
1072 gotsig = 0;
1073 1298
1074 for (signum = signalmax; signum--; ) 1299 for (i = EV_NSIG - 1; i--; )
1075 if (signals [signum].gotsig) 1300 if (expect_false (signals [i].pending))
1076 ev_feed_signal_event (EV_A_ signum + 1); 1301 ev_feed_signal_event (EV_A_ i + 1);
1077 } 1302 }
1078 1303
1079#if EV_ASYNC_ENABLE 1304#if EV_ASYNC_ENABLE
1080 if (gotasync) 1305 if (async_pending)
1081 { 1306 {
1082 int i; 1307 async_pending = 0;
1083 gotasync = 0;
1084 1308
1085 for (i = asynccnt; i--; ) 1309 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 1310 if (asyncs [i]->sent)
1087 { 1311 {
1088 asyncs [i]->sent = 0; 1312 asyncs [i]->sent = 0;
… …
1096 1320
1097static void 1321static void
1098ev_sighandler (int signum) 1322ev_sighandler (int signum)
1099{ 1323{
1100#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct; 1325 EV_P = signals [signum - 1].loop;
1102#endif 1326#endif
1103 1327
1104#if _WIN32 1328#ifdef _WIN32
1105 signal (signum, ev_sighandler); 1329 signal (signum, ev_sighandler);
1106#endif 1330#endif
1107 1331
1108 signals [signum - 1].gotsig = 1; 1332 signals [signum - 1].pending = 1;
1109 evpipe_write (EV_A_ &gotsig); 1333 evpipe_write (EV_A_ &sig_pending);
1110} 1334}
1111 1335
1112void noinline 1336void noinline
1113ev_feed_signal_event (EV_P_ int signum) 1337ev_feed_signal_event (EV_P_ int signum)
1114{ 1338{
1115 WL w; 1339 WL w;
1116 1340
1341 if (expect_false (signum <= 0 || signum > EV_NSIG))
1342 return;
1343
1344 --signum;
1345
1117#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
1118 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 */
1119#endif 1348 /* or, likely more useful, feeding a signal nobody is waiting for */
1120 1349
1121 --signum; 1350 if (expect_false (signals [signum].loop != EV_A))
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 1351 return;
1352#endif
1125 1353
1126 signals [signum].gotsig = 0; 1354 signals [signum].pending = 0;
1127 1355
1128 for (w = signals [signum].head; w; w = w->next) 1356 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 1358}
1131 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
1132/*****************************************************************************/ 1382/*****************************************************************************/
1133 1383
1384#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 1385static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 1386
1138static ev_signal childev; 1387static ev_signal childev;
1139 1388
1140#ifndef WIFCONTINUED 1389#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 1390# define WIFCONTINUED(status) 0
1142#endif 1391#endif
1143 1392
1144void inline_speed 1393/* handle a single child status event */
1394inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 1395child_reap (EV_P_ int chain, int pid, int status)
1146{ 1396{
1147 ev_child *w; 1397 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1398 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 1399
1150 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)
1151 { 1401 {
1152 if ((w->pid == pid || !w->pid) 1402 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 1403 && (!traced || (w->flags & 1)))
1154 { 1404 {
1155 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 */
… …
1162 1412
1163#ifndef WCONTINUED 1413#ifndef WCONTINUED
1164# define WCONTINUED 0 1414# define WCONTINUED 0
1165#endif 1415#endif
1166 1416
1417/* called on sigchld etc., calls waitpid */
1167static void 1418static void
1168childcb (EV_P_ ev_signal *sw, int revents) 1419childcb (EV_P_ ev_signal *sw, int revents)
1169{ 1420{
1170 int pid, status; 1421 int pid, status;
1171 1422
… …
1179 /* 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 */
1180 /* 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 */
1181 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1432 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 1433
1183 child_reap (EV_A_ pid, pid, status); 1434 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 1435 if ((EV_PID_HASHSIZE) > 1)
1185 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 */
1186} 1437}
1187 1438
1188#endif 1439#endif
1189 1440
… …
1252 /* kqueue is borked on everything but netbsd apparently */ 1503 /* kqueue is borked on everything but netbsd apparently */
1253 /* 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 */
1254 flags &= ~EVBACKEND_KQUEUE; 1505 flags &= ~EVBACKEND_KQUEUE;
1255#endif 1506#endif
1256#ifdef __APPLE__ 1507#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 1508 /* only select works correctly on that "unix-certified" platform */
1258 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 */
1511#endif
1512#ifdef __FreeBSD__
1513 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1259#endif 1514#endif
1260 1515
1261 return flags; 1516 return flags;
1262} 1517}
1263 1518
… …
1277ev_backend (EV_P) 1532ev_backend (EV_P)
1278{ 1533{
1279 return backend; 1534 return backend;
1280} 1535}
1281 1536
1537#if EV_FEATURE_API
1282unsigned int 1538unsigned int
1283ev_loop_count (EV_P) 1539ev_iteration (EV_P)
1284{ 1540{
1285 return loop_count; 1541 return loop_count;
1286} 1542}
1287 1543
1544unsigned int
1545ev_depth (EV_P)
1546{
1547 return loop_depth;
1548}
1549
1288void 1550void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1551ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1552{
1291 io_blocktime = interval; 1553 io_blocktime = interval;
1292} 1554}
… …
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{ 1558{
1297 timeout_blocktime = interval; 1559 timeout_blocktime = interval;
1298} 1560}
1299 1561
1562void
1563ev_set_userdata (EV_P_ void *data)
1564{
1565 userdata = data;
1566}
1567
1568void *
1569ev_userdata (EV_P)
1570{
1571 return userdata;
1572}
1573
1574void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1575{
1576 invoke_cb = invoke_pending_cb;
1577}
1578
1579void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1580{
1581 release_cb = release;
1582 acquire_cb = acquire;
1583}
1584#endif
1585
1586/* initialise a loop structure, must be zero-initialised */
1300static void noinline 1587static void noinline
1301loop_init (EV_P_ unsigned int flags) 1588loop_init (EV_P_ unsigned int flags)
1302{ 1589{
1303 if (!backend) 1590 if (!backend)
1304 { 1591 {
1592#if EV_USE_REALTIME
1593 if (!have_realtime)
1594 {
1595 struct timespec ts;
1596
1597 if (!clock_gettime (CLOCK_REALTIME, &ts))
1598 have_realtime = 1;
1599 }
1600#endif
1601
1305#if EV_USE_MONOTONIC 1602#if EV_USE_MONOTONIC
1603 if (!have_monotonic)
1306 { 1604 {
1307 struct timespec ts; 1605 struct timespec ts;
1606
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1607 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 1608 have_monotonic = 1;
1310 } 1609 }
1311#endif 1610#endif
1611
1612 /* pid check not overridable via env */
1613#ifndef _WIN32
1614 if (flags & EVFLAG_FORKCHECK)
1615 curpid = getpid ();
1616#endif
1617
1618 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS"));
1312 1622
1313 ev_rt_now = ev_time (); 1623 ev_rt_now = ev_time ();
1314 mn_now = get_clock (); 1624 mn_now = get_clock ();
1315 now_floor = mn_now; 1625 now_floor = mn_now;
1316 rtmn_diff = ev_rt_now - mn_now; 1626 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending;
1629#endif
1317 1630
1318 io_blocktime = 0.; 1631 io_blocktime = 0.;
1319 timeout_blocktime = 0.; 1632 timeout_blocktime = 0.;
1320 backend = 0; 1633 backend = 0;
1321 backend_fd = -1; 1634 backend_fd = -1;
1322 gotasync = 0; 1635 sig_pending = 0;
1636#if EV_ASYNC_ENABLE
1637 async_pending = 0;
1638#endif
1323#if EV_USE_INOTIFY 1639#if EV_USE_INOTIFY
1324 fs_fd = -2; 1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1325#endif 1641#endif
1326 1642#if EV_USE_SIGNALFD
1327 /* pid check not overridable via env */ 1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1328#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK)
1330 curpid = getpid ();
1331#endif 1644#endif
1332
1333 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 1645
1338 if (!(flags & 0x0000ffffU)) 1646 if (!(flags & 0x0000ffffU))
1339 flags |= ev_recommended_backends (); 1647 flags |= ev_recommended_backends ();
1340 1648
1341#if EV_USE_PORT 1649#if EV_USE_PORT
… …
1352#endif 1660#endif
1353#if EV_USE_SELECT 1661#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1662 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 1663#endif
1356 1664
1665 ev_prepare_init (&pending_w, pendingcb);
1666
1667#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 1668 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 1669 ev_set_priority (&pipe_w, EV_MAXPRI);
1670#endif
1359 } 1671 }
1360} 1672}
1361 1673
1674/* free up a loop structure */
1362static void noinline 1675static void noinline
1363loop_destroy (EV_P) 1676loop_destroy (EV_P)
1364{ 1677{
1365 int i; 1678 int i;
1366 1679
1367 if (ev_is_active (&pipeev)) 1680 if (ev_is_active (&pipe_w))
1368 { 1681 {
1369 ev_ref (EV_A); /* signal watcher */ 1682 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 1683 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 1684
1372#if EV_USE_EVENTFD 1685#if EV_USE_EVENTFD
1373 if (evfd >= 0) 1686 if (evfd >= 0)
1374 close (evfd); 1687 close (evfd);
1375#endif 1688#endif
1376 1689
1377 if (evpipe [0] >= 0) 1690 if (evpipe [0] >= 0)
1378 { 1691 {
1379 close (evpipe [0]); 1692 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 1693 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 1694 }
1382 } 1695 }
1696
1697#if EV_USE_SIGNALFD
1698 if (ev_is_active (&sigfd_w))
1699 close (sigfd);
1700#endif
1383 1701
1384#if EV_USE_INOTIFY 1702#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 1703 if (fs_fd >= 0)
1386 close (fs_fd); 1704 close (fs_fd);
1387#endif 1705#endif
… …
1411#if EV_IDLE_ENABLE 1729#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 1730 array_free (idle, [i]);
1413#endif 1731#endif
1414 } 1732 }
1415 1733
1416 ev_free (anfds); anfdmax = 0; 1734 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 1735
1418 /* have to use the microsoft-never-gets-it-right macro */ 1736 /* have to use the microsoft-never-gets-it-right macro */
1737 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 1738 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 1739 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 1740#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 1741 array_free (periodic, EMPTY);
1423#endif 1742#endif
… …
1432 1751
1433 backend = 0; 1752 backend = 0;
1434} 1753}
1435 1754
1436#if EV_USE_INOTIFY 1755#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 1756inline_size void infy_fork (EV_P);
1438#endif 1757#endif
1439 1758
1440void inline_size 1759inline_size void
1441loop_fork (EV_P) 1760loop_fork (EV_P)
1442{ 1761{
1443#if EV_USE_PORT 1762#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1763 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 1764#endif
… …
1451#endif 1770#endif
1452#if EV_USE_INOTIFY 1771#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 1772 infy_fork (EV_A);
1454#endif 1773#endif
1455 1774
1456 if (ev_is_active (&pipeev)) 1775 if (ev_is_active (&pipe_w))
1457 { 1776 {
1458 /* this "locks" the handlers against writing to the pipe */ 1777 /* this "locks" the handlers against writing to the pipe */
1459 /* while we modify the fd vars */ 1778 /* while we modify the fd vars */
1460 gotsig = 1; 1779 sig_pending = 1;
1461#if EV_ASYNC_ENABLE 1780#if EV_ASYNC_ENABLE
1462 gotasync = 1; 1781 async_pending = 1;
1463#endif 1782#endif
1464 1783
1465 ev_ref (EV_A); 1784 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 1785 ev_io_stop (EV_A_ &pipe_w);
1467 1786
1468#if EV_USE_EVENTFD 1787#if EV_USE_EVENTFD
1469 if (evfd >= 0) 1788 if (evfd >= 0)
1470 close (evfd); 1789 close (evfd);
1471#endif 1790#endif
1472 1791
1473 if (evpipe [0] >= 0) 1792 if (evpipe [0] >= 0)
1474 { 1793 {
1475 close (evpipe [0]); 1794 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 1795 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 1796 }
1478 1797
1798#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 1799 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 1800 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 1801 pipecb (EV_A_ &pipe_w, EV_READ);
1802#endif
1482 } 1803 }
1483 1804
1484 postfork = 0; 1805 postfork = 0;
1485} 1806}
1486 1807
1487#if EV_MULTIPLICITY 1808#if EV_MULTIPLICITY
1488 1809
1489struct ev_loop * 1810struct ev_loop *
1490ev_loop_new (unsigned int flags) 1811ev_loop_new (unsigned int flags)
1491{ 1812{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1813 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 1814
1494 memset (loop, 0, sizeof (struct ev_loop)); 1815 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 1816 loop_init (EV_A_ flags);
1497 1817
1498 if (ev_backend (EV_A)) 1818 if (ev_backend (EV_A))
1499 return loop; 1819 return EV_A;
1500 1820
1501 return 0; 1821 return 0;
1502} 1822}
1503 1823
1504void 1824void
… …
1511void 1831void
1512ev_loop_fork (EV_P) 1832ev_loop_fork (EV_P)
1513{ 1833{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1834 postfork = 1; /* must be in line with ev_default_fork */
1515} 1835}
1836#endif /* multiplicity */
1516 1837
1517#if EV_VERIFY 1838#if EV_VERIFY
1518static void 1839static void noinline
1840verify_watcher (EV_P_ W w)
1841{
1842 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1843
1844 if (w->pending)
1845 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1846}
1847
1848static void noinline
1849verify_heap (EV_P_ ANHE *heap, int N)
1850{
1851 int i;
1852
1853 for (i = HEAP0; i < N + HEAP0; ++i)
1854 {
1855 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1856 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1857 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1858
1859 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1860 }
1861}
1862
1863static void noinline
1519array_check (W **ws, int cnt) 1864array_verify (EV_P_ W *ws, int cnt)
1520{ 1865{
1521 while (cnt--) 1866 while (cnt--)
1867 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1868 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1869 verify_watcher (EV_A_ ws [cnt]);
1870 }
1523} 1871}
1524#endif 1872#endif
1525 1873
1874#if EV_FEATURE_API
1526void 1875void
1527ev_loop_verify (EV_P) 1876ev_verify (EV_P)
1528{ 1877{
1529#if EV_VERIFY 1878#if EV_VERIFY
1530 int i; 1879 int i;
1880 WL w;
1531 1881
1882 assert (activecnt >= -1);
1883
1884 assert (fdchangemax >= fdchangecnt);
1885 for (i = 0; i < fdchangecnt; ++i)
1886 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1887
1888 assert (anfdmax >= 0);
1889 for (i = 0; i < anfdmax; ++i)
1890 for (w = anfds [i].head; w; w = w->next)
1891 {
1892 verify_watcher (EV_A_ (W)w);
1893 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1894 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1895 }
1896
1897 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 1898 verify_heap (EV_A_ timers, timercnt);
1899
1533#if EV_PERIODIC_ENABLE 1900#if EV_PERIODIC_ENABLE
1901 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 1902 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 1903#endif
1536 1904
1905 for (i = NUMPRI; i--; )
1906 {
1907 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 1908#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 1909 assert (idleall >= 0);
1910 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 1911 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 1912#endif
1913 }
1914
1541#if EV_FORK_ENABLE 1915#if EV_FORK_ENABLE
1916 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 1917 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 1918#endif
1919
1544#if EV_ASYNC_ENABLE 1920#if EV_ASYNC_ENABLE
1921 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1922 array_verify (EV_A_ (W *)asyncs, asynccnt);
1923#endif
1924
1925#if EV_PREPARE_ENABLE
1926 assert (preparemax >= preparecnt);
1927 array_verify (EV_A_ (W *)prepares, preparecnt);
1928#endif
1929
1930#if EV_CHECK_ENABLE
1931 assert (checkmax >= checkcnt);
1932 array_verify (EV_A_ (W *)checks, checkcnt);
1933#endif
1934
1935# if 0
1936#if EV_CHILD_ENABLE
1937 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1938 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1939#endif
1546#endif 1940# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 1941#endif
1550} 1942}
1551 1943#endif
1552#endif /* multiplicity */
1553 1944
1554#if EV_MULTIPLICITY 1945#if EV_MULTIPLICITY
1555struct ev_loop * 1946struct ev_loop *
1556ev_default_loop_init (unsigned int flags) 1947ev_default_loop_init (unsigned int flags)
1557#else 1948#else
… …
1560#endif 1951#endif
1561{ 1952{
1562 if (!ev_default_loop_ptr) 1953 if (!ev_default_loop_ptr)
1563 { 1954 {
1564#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1956 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 1957#else
1567 ev_default_loop_ptr = 1; 1958 ev_default_loop_ptr = 1;
1568#endif 1959#endif
1569 1960
1570 loop_init (EV_A_ flags); 1961 loop_init (EV_A_ flags);
1571 1962
1572 if (ev_backend (EV_A)) 1963 if (ev_backend (EV_A))
1573 { 1964 {
1574#ifndef _WIN32 1965#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 1966 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 1967 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 1968 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1969 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 1970#endif
… …
1587 1978
1588void 1979void
1589ev_default_destroy (void) 1980ev_default_destroy (void)
1590{ 1981{
1591#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1592 struct ev_loop *loop = ev_default_loop_ptr; 1983 EV_P = ev_default_loop_ptr;
1593#endif 1984#endif
1594 1985
1595#ifndef _WIN32 1986 ev_default_loop_ptr = 0;
1987
1988#if EV_CHILD_ENABLE
1596 ev_ref (EV_A); /* child watcher */ 1989 ev_ref (EV_A); /* child watcher */
1597 ev_signal_stop (EV_A_ &childev); 1990 ev_signal_stop (EV_A_ &childev);
1598#endif 1991#endif
1599 1992
1600 loop_destroy (EV_A); 1993 loop_destroy (EV_A);
… …
1602 1995
1603void 1996void
1604ev_default_fork (void) 1997ev_default_fork (void)
1605{ 1998{
1606#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1607 struct ev_loop *loop = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1608#endif 2001#endif
1609 2002
1610 if (backend)
1611 postfork = 1; /* must be in line with ev_loop_fork */ 2003 postfork = 1; /* must be in line with ev_loop_fork */
1612} 2004}
1613 2005
1614/*****************************************************************************/ 2006/*****************************************************************************/
1615 2007
1616void 2008void
1617ev_invoke (EV_P_ void *w, int revents) 2009ev_invoke (EV_P_ void *w, int revents)
1618{ 2010{
1619 EV_CB_INVOKE ((W)w, revents); 2011 EV_CB_INVOKE ((W)w, revents);
1620} 2012}
1621 2013
1622void inline_speed 2014unsigned int
1623call_pending (EV_P) 2015ev_pending_count (EV_P)
2016{
2017 int pri;
2018 unsigned int count = 0;
2019
2020 for (pri = NUMPRI; pri--; )
2021 count += pendingcnt [pri];
2022
2023 return count;
2024}
2025
2026void noinline
2027ev_invoke_pending (EV_P)
1624{ 2028{
1625 int pri; 2029 int pri;
1626 2030
1627 for (pri = NUMPRI; pri--; ) 2031 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2032 while (pendingcnt [pri])
1629 { 2033 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2034 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2035
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2036 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2037 /* ^ this is no longer true, as pending_w could be here */
1635 2038
1636 p->w->pending = 0; 2039 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2040 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2041 EV_FREQUENT_CHECK;
1639 }
1640 } 2042 }
1641} 2043}
1642 2044
1643#if EV_IDLE_ENABLE 2045#if EV_IDLE_ENABLE
1644void inline_size 2046/* make idle watchers pending. this handles the "call-idle */
2047/* only when higher priorities are idle" logic */
2048inline_size void
1645idle_reify (EV_P) 2049idle_reify (EV_P)
1646{ 2050{
1647 if (expect_false (idleall)) 2051 if (expect_false (idleall))
1648 { 2052 {
1649 int pri; 2053 int pri;
… …
1661 } 2065 }
1662 } 2066 }
1663} 2067}
1664#endif 2068#endif
1665 2069
1666void inline_size 2070/* make timers pending */
2071inline_size void
1667timers_reify (EV_P) 2072timers_reify (EV_P)
1668{ 2073{
1669 EV_FREQUENT_CHECK; 2074 EV_FREQUENT_CHECK;
1670 2075
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2076 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2077 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2078 do
1674
1675 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677 /* first reschedule or stop timer */
1678 if (w->repeat)
1679 { 2079 {
2080 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2081
2082 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2083
2084 /* first reschedule or stop timer */
2085 if (w->repeat)
2086 {
1680 ev_at (w) += w->repeat; 2087 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2088 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2089 ev_at (w) = mn_now;
1683 2090
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2091 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 2092
1686 ANHE_at_cache (timers [HEAP0]); 2093 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 2094 downheap (timers, timercnt, HEAP0);
2095 }
2096 else
2097 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2098
2099 EV_FREQUENT_CHECK;
2100 feed_reverse (EV_A_ (W)w);
1688 } 2101 }
1689 else 2102 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2103
1692 EV_FREQUENT_CHECK; 2104 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 2105 }
1695} 2106}
1696 2107
1697#if EV_PERIODIC_ENABLE 2108#if EV_PERIODIC_ENABLE
1698void inline_size 2109/* make periodics pending */
2110inline_size void
1699periodics_reify (EV_P) 2111periodics_reify (EV_P)
1700{ 2112{
1701 EV_FREQUENT_CHECK; 2113 EV_FREQUENT_CHECK;
1702 2114
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2115 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2116 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2117 int feed_count = 0;
1706 2118
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2119 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2120 {
2121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2122
2123 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2124
2125 /* first reschedule or stop timer */
2126 if (w->reschedule_cb)
2127 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2128 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2129
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2130 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2131
1716 ANHE_at_cache (periodics [HEAP0]); 2132 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2133 downheap (periodics, periodiccnt, HEAP0);
2134 }
2135 else if (w->interval)
2136 {
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2138 /* if next trigger time is not sufficiently in the future, put it there */
2139 /* this might happen because of floating point inexactness */
2140 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2141 {
2142 ev_at (w) += w->interval;
2143
2144 /* if interval is unreasonably low we might still have a time in the past */
2145 /* so correct this. this will make the periodic very inexact, but the user */
2146 /* has effectively asked to get triggered more often than possible */
2147 if (ev_at (w) < ev_rt_now)
2148 ev_at (w) = ev_rt_now;
2149 }
2150
2151 ANHE_at_cache (periodics [HEAP0]);
2152 downheap (periodics, periodiccnt, HEAP0);
2153 }
2154 else
2155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2156
2157 EV_FREQUENT_CHECK;
2158 feed_reverse (EV_A_ (W)w);
1718 } 2159 }
1719 else if (w->interval) 2160 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720 {
1721 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722 /* if next trigger time is not sufficiently in the future, put it there */
1723 /* this might happen because of floating point inexactness */
1724 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725 {
1726 ev_at (w) += w->interval;
1727 2161
1728 /* if interval is unreasonably low we might still have a time in the past */
1729 /* so correct this. this will make the periodic very inexact, but the user */
1730 /* has effectively asked to get triggered more often than possible */
1731 if (ev_at (w) < ev_rt_now)
1732 ev_at (w) = ev_rt_now;
1733 }
1734
1735 ANHE_at_cache (periodics [HEAP0]);
1736 downheap (periodics, periodiccnt, HEAP0);
1737 }
1738 else
1739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741 EV_FREQUENT_CHECK;
1742 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2162 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2163 }
1744} 2164}
1745 2165
2166/* simply recalculate all periodics */
2167/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1746static void noinline 2168static void noinline
1747periodics_reschedule (EV_P) 2169periodics_reschedule (EV_P)
1748{ 2170{
1749 int i; 2171 int i;
1750 2172
… …
1763 2185
1764 reheap (periodics, periodiccnt); 2186 reheap (periodics, periodiccnt);
1765} 2187}
1766#endif 2188#endif
1767 2189
1768void inline_speed 2190/* adjust all timers by a given offset */
2191static void noinline
2192timers_reschedule (EV_P_ ev_tstamp adjust)
2193{
2194 int i;
2195
2196 for (i = 0; i < timercnt; ++i)
2197 {
2198 ANHE *he = timers + i + HEAP0;
2199 ANHE_w (*he)->at += adjust;
2200 ANHE_at_cache (*he);
2201 }
2202}
2203
2204/* fetch new monotonic and realtime times from the kernel */
2205/* also detect if there was a timejump, and act accordingly */
2206inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 2207time_update (EV_P_ ev_tstamp max_block)
1770{ 2208{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2209#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2210 if (expect_true (have_monotonic))
1775 { 2211 {
2212 int i;
1776 ev_tstamp odiff = rtmn_diff; 2213 ev_tstamp odiff = rtmn_diff;
1777 2214
1778 mn_now = get_clock (); 2215 mn_now = get_clock ();
1779 2216
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2217 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1806 ev_rt_now = ev_time (); 2243 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2244 mn_now = get_clock ();
1808 now_floor = mn_now; 2245 now_floor = mn_now;
1809 } 2246 }
1810 2247
2248 /* no timer adjustment, as the monotonic clock doesn't jump */
2249 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2250# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2251 periodics_reschedule (EV_A);
1813# endif 2252# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2253 }
1817 else 2254 else
1818#endif 2255#endif
1819 { 2256 {
1820 ev_rt_now = ev_time (); 2257 ev_rt_now = ev_time ();
1821 2258
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2259 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 2260 {
2261 /* adjust timers. this is easy, as the offset is the same for all of them */
2262 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 2263#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2264 periodics_reschedule (EV_A);
1826#endif 2265#endif
1827 /* adjust timers. this is easy, as the offset is the same for all of them */
1828 for (i = 0; i < timercnt; ++i)
1829 {
1830 ANHE *he = timers + i + HEAP0;
1831 ANHE_w (*he)->at += ev_rt_now - mn_now;
1832 ANHE_at_cache (*he);
1833 }
1834 } 2266 }
1835 2267
1836 mn_now = ev_rt_now; 2268 mn_now = ev_rt_now;
1837 } 2269 }
1838} 2270}
1839 2271
1840void 2272void
1841ev_ref (EV_P)
1842{
1843 ++activecnt;
1844}
1845
1846void
1847ev_unref (EV_P)
1848{
1849 --activecnt;
1850}
1851
1852static int loop_done;
1853
1854void
1855ev_loop (EV_P_ int flags) 2273ev_loop (EV_P_ int flags)
1856{ 2274{
2275#if EV_FEATURE_API
2276 ++loop_depth;
2277#endif
2278
2279 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2280
1857 loop_done = EVUNLOOP_CANCEL; 2281 loop_done = EVUNLOOP_CANCEL;
1858 2282
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 2284
1861 do 2285 do
1862 { 2286 {
1863#if EV_VERIFY >= 2 2287#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2288 ev_verify (EV_A);
1865#endif 2289#endif
1866 2290
1867#ifndef _WIN32 2291#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 2292 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 2293 if (expect_false (getpid () != curpid))
… …
1877 /* we might have forked, so queue fork handlers */ 2301 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2302 if (expect_false (postfork))
1879 if (forkcnt) 2303 if (forkcnt)
1880 { 2304 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2305 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2306 EV_INVOKE_PENDING;
1883 } 2307 }
1884#endif 2308#endif
1885 2309
2310#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2311 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2312 if (expect_false (preparecnt))
1888 { 2313 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2314 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
1891 } 2316 }
2317#endif
1892 2318
1893 if (expect_false (!activecnt)) 2319 if (expect_false (loop_done))
1894 break; 2320 break;
1895 2321
1896 /* we might have forked, so reify kernel state if necessary */ 2322 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2323 if (expect_false (postfork))
1898 loop_fork (EV_A); 2324 loop_fork (EV_A);
… …
1905 ev_tstamp waittime = 0.; 2331 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 2332 ev_tstamp sleeptime = 0.;
1907 2333
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2334 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1909 { 2335 {
2336 /* remember old timestamp for io_blocktime calculation */
2337 ev_tstamp prev_mn_now = mn_now;
2338
1910 /* update time to cancel out callback processing overhead */ 2339 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100); 2340 time_update (EV_A_ 1e100);
1912 2341
1913 waittime = MAX_BLOCKTIME; 2342 waittime = MAX_BLOCKTIME;
1914 2343
… …
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2353 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1925 if (waittime > to) waittime = to; 2354 if (waittime > to) waittime = to;
1926 } 2355 }
1927#endif 2356#endif
1928 2357
2358 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 2359 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 2360 waittime = timeout_blocktime;
1931 2361
1932 sleeptime = waittime - backend_fudge; 2362 /* extra check because io_blocktime is commonly 0 */
1933
1934 if (expect_true (sleeptime > io_blocktime)) 2363 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 2364 {
2365 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2366
2367 if (sleeptime > waittime - backend_fudge)
2368 sleeptime = waittime - backend_fudge;
2369
2370 if (expect_true (sleeptime > 0.))
2371 {
1939 ev_sleep (sleeptime); 2372 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 2373 waittime -= sleeptime;
2374 }
1941 } 2375 }
1942 } 2376 }
1943 2377
2378#if EV_FEATURE_API
1944 ++loop_count; 2379 ++loop_count;
2380#endif
2381 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 2382 backend_poll (EV_A_ waittime);
2383 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1946 2384
1947 /* update ev_rt_now, do magic */ 2385 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 2386 time_update (EV_A_ waittime + sleeptime);
1949 } 2387 }
1950 2388
… …
1957#if EV_IDLE_ENABLE 2395#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 2396 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 2397 idle_reify (EV_A);
1960#endif 2398#endif
1961 2399
2400#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 2401 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 2402 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2403 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2404#endif
1965 2405
1966 call_pending (EV_A); 2406 EV_INVOKE_PENDING;
1967 } 2407 }
1968 while (expect_true ( 2408 while (expect_true (
1969 activecnt 2409 activecnt
1970 && !loop_done 2410 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2411 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1972 )); 2412 ));
1973 2413
1974 if (loop_done == EVUNLOOP_ONE) 2414 if (loop_done == EVUNLOOP_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 2415 loop_done = EVUNLOOP_CANCEL;
2416
2417#if EV_FEATURE_API
2418 --loop_depth;
2419#endif
1976} 2420}
1977 2421
1978void 2422void
1979ev_unloop (EV_P_ int how) 2423ev_unloop (EV_P_ int how)
1980{ 2424{
1981 loop_done = how; 2425 loop_done = how;
1982} 2426}
1983 2427
2428void
2429ev_ref (EV_P)
2430{
2431 ++activecnt;
2432}
2433
2434void
2435ev_unref (EV_P)
2436{
2437 --activecnt;
2438}
2439
2440void
2441ev_now_update (EV_P)
2442{
2443 time_update (EV_A_ 1e100);
2444}
2445
2446void
2447ev_suspend (EV_P)
2448{
2449 ev_now_update (EV_A);
2450}
2451
2452void
2453ev_resume (EV_P)
2454{
2455 ev_tstamp mn_prev = mn_now;
2456
2457 ev_now_update (EV_A);
2458 timers_reschedule (EV_A_ mn_now - mn_prev);
2459#if EV_PERIODIC_ENABLE
2460 /* TODO: really do this? */
2461 periodics_reschedule (EV_A);
2462#endif
2463}
2464
1984/*****************************************************************************/ 2465/*****************************************************************************/
2466/* singly-linked list management, used when the expected list length is short */
1985 2467
1986void inline_size 2468inline_size void
1987wlist_add (WL *head, WL elem) 2469wlist_add (WL *head, WL elem)
1988{ 2470{
1989 elem->next = *head; 2471 elem->next = *head;
1990 *head = elem; 2472 *head = elem;
1991} 2473}
1992 2474
1993void inline_size 2475inline_size void
1994wlist_del (WL *head, WL elem) 2476wlist_del (WL *head, WL elem)
1995{ 2477{
1996 while (*head) 2478 while (*head)
1997 { 2479 {
1998 if (*head == elem) 2480 if (expect_true (*head == elem))
1999 { 2481 {
2000 *head = elem->next; 2482 *head = elem->next;
2001 return; 2483 break;
2002 } 2484 }
2003 2485
2004 head = &(*head)->next; 2486 head = &(*head)->next;
2005 } 2487 }
2006} 2488}
2007 2489
2008void inline_speed 2490/* internal, faster, version of ev_clear_pending */
2491inline_speed void
2009clear_pending (EV_P_ W w) 2492clear_pending (EV_P_ W w)
2010{ 2493{
2011 if (w->pending) 2494 if (w->pending)
2012 { 2495 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2496 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 2497 w->pending = 0;
2015 } 2498 }
2016} 2499}
2017 2500
2018int 2501int
… …
2022 int pending = w_->pending; 2505 int pending = w_->pending;
2023 2506
2024 if (expect_true (pending)) 2507 if (expect_true (pending))
2025 { 2508 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2509 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2510 p->w = (W)&pending_w;
2027 w_->pending = 0; 2511 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 2512 return p->events;
2030 } 2513 }
2031 else 2514 else
2032 return 0; 2515 return 0;
2033} 2516}
2034 2517
2035void inline_size 2518inline_size void
2036pri_adjust (EV_P_ W w) 2519pri_adjust (EV_P_ W w)
2037{ 2520{
2038 int pri = w->priority; 2521 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2522 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2523 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 2524 ev_set_priority (w, pri);
2042} 2525}
2043 2526
2044void inline_speed 2527inline_speed void
2045ev_start (EV_P_ W w, int active) 2528ev_start (EV_P_ W w, int active)
2046{ 2529{
2047 pri_adjust (EV_A_ w); 2530 pri_adjust (EV_A_ w);
2048 w->active = active; 2531 w->active = active;
2049 ev_ref (EV_A); 2532 ev_ref (EV_A);
2050} 2533}
2051 2534
2052void inline_size 2535inline_size void
2053ev_stop (EV_P_ W w) 2536ev_stop (EV_P_ W w)
2054{ 2537{
2055 ev_unref (EV_A); 2538 ev_unref (EV_A);
2056 w->active = 0; 2539 w->active = 0;
2057} 2540}
… …
2064 int fd = w->fd; 2547 int fd = w->fd;
2065 2548
2066 if (expect_false (ev_is_active (w))) 2549 if (expect_false (ev_is_active (w)))
2067 return; 2550 return;
2068 2551
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 2552 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2553 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 2554
2071 EV_FREQUENT_CHECK; 2555 EV_FREQUENT_CHECK;
2072 2556
2073 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2558 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 2559 wlist_add (&anfds[fd].head, (WL)w);
2076 2560
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2561 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 2562 w->events &= ~EV__IOFDSET;
2079 2563
2080 EV_FREQUENT_CHECK; 2564 EV_FREQUENT_CHECK;
2081} 2565}
2082 2566
2083void noinline 2567void noinline
… …
2085{ 2569{
2086 clear_pending (EV_A_ (W)w); 2570 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2571 if (expect_false (!ev_is_active (w)))
2088 return; 2572 return;
2089 2573
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2574 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 2575
2092 EV_FREQUENT_CHECK; 2576 EV_FREQUENT_CHECK;
2093 2577
2094 wlist_del (&anfds[w->fd].head, (WL)w); 2578 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 2579 ev_stop (EV_A_ (W)w);
… …
2105 if (expect_false (ev_is_active (w))) 2589 if (expect_false (ev_is_active (w)))
2106 return; 2590 return;
2107 2591
2108 ev_at (w) += mn_now; 2592 ev_at (w) += mn_now;
2109 2593
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2594 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 2595
2112 EV_FREQUENT_CHECK; 2596 EV_FREQUENT_CHECK;
2113 2597
2114 ++timercnt; 2598 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2599 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 2602 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 2603 upheap (timers, ev_active (w));
2120 2604
2121 EV_FREQUENT_CHECK; 2605 EV_FREQUENT_CHECK;
2122 2606
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2607 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 2608}
2125 2609
2126void noinline 2610void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 2611ev_timer_stop (EV_P_ ev_timer *w)
2128{ 2612{
… …
2133 EV_FREQUENT_CHECK; 2617 EV_FREQUENT_CHECK;
2134 2618
2135 { 2619 {
2136 int active = ev_active (w); 2620 int active = ev_active (w);
2137 2621
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2622 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 2623
2140 --timercnt; 2624 --timercnt;
2141 2625
2142 if (expect_true (active < timercnt + HEAP0)) 2626 if (expect_true (active < timercnt + HEAP0))
2143 { 2627 {
2144 timers [active] = timers [timercnt + HEAP0]; 2628 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 2629 adjustheap (timers, timercnt, active);
2146 } 2630 }
2147 } 2631 }
2148 2632
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 2633 ev_at (w) -= mn_now;
2152 2634
2153 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
2636
2637 EV_FREQUENT_CHECK;
2154} 2638}
2155 2639
2156void noinline 2640void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 2641ev_timer_again (EV_P_ ev_timer *w)
2158{ 2642{
… …
2176 } 2660 }
2177 2661
2178 EV_FREQUENT_CHECK; 2662 EV_FREQUENT_CHECK;
2179} 2663}
2180 2664
2665ev_tstamp
2666ev_timer_remaining (EV_P_ ev_timer *w)
2667{
2668 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2669}
2670
2181#if EV_PERIODIC_ENABLE 2671#if EV_PERIODIC_ENABLE
2182void noinline 2672void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 2673ev_periodic_start (EV_P_ ev_periodic *w)
2184{ 2674{
2185 if (expect_false (ev_is_active (w))) 2675 if (expect_false (ev_is_active (w)))
… …
2187 2677
2188 if (w->reschedule_cb) 2678 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2679 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2680 else if (w->interval)
2191 { 2681 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2682 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193 /* this formula differs from the one in periodic_reify because we do not always round up */ 2683 /* this formula differs from the one in periodic_reify because we do not always round up */
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2684 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 2685 }
2196 else 2686 else
2197 ev_at (w) = w->offset; 2687 ev_at (w) = w->offset;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 2695 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 2696 upheap (periodics, ev_active (w));
2207 2697
2208 EV_FREQUENT_CHECK; 2698 EV_FREQUENT_CHECK;
2209 2699
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2700 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 2701}
2212 2702
2213void noinline 2703void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 2704ev_periodic_stop (EV_P_ ev_periodic *w)
2215{ 2705{
… …
2220 EV_FREQUENT_CHECK; 2710 EV_FREQUENT_CHECK;
2221 2711
2222 { 2712 {
2223 int active = ev_active (w); 2713 int active = ev_active (w);
2224 2714
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2715 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 2716
2227 --periodiccnt; 2717 --periodiccnt;
2228 2718
2229 if (expect_true (active < periodiccnt + HEAP0)) 2719 if (expect_true (active < periodiccnt + HEAP0))
2230 { 2720 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 2721 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 2722 adjustheap (periodics, periodiccnt, active);
2233 } 2723 }
2234 } 2724 }
2235 2725
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 2726 ev_stop (EV_A_ (W)w);
2727
2728 EV_FREQUENT_CHECK;
2239} 2729}
2240 2730
2241void noinline 2731void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 2732ev_periodic_again (EV_P_ ev_periodic *w)
2243{ 2733{
… …
2249 2739
2250#ifndef SA_RESTART 2740#ifndef SA_RESTART
2251# define SA_RESTART 0 2741# define SA_RESTART 0
2252#endif 2742#endif
2253 2743
2744#if EV_SIGNAL_ENABLE
2745
2254void noinline 2746void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 2747ev_signal_start (EV_P_ ev_signal *w)
2256{ 2748{
2257#if EV_MULTIPLICITY
2258 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259#endif
2260 if (expect_false (ev_is_active (w))) 2749 if (expect_false (ev_is_active (w)))
2261 return; 2750 return;
2262 2751
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2752 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2264 2753
2265 evpipe_init (EV_A); 2754#if EV_MULTIPLICITY
2755 assert (("libev: a signal must not be attached to two different loops",
2756 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2266 2757
2267 EV_FREQUENT_CHECK; 2758 signals [w->signum - 1].loop = EV_A;
2759#endif
2268 2760
2761 EV_FREQUENT_CHECK;
2762
2763#if EV_USE_SIGNALFD
2764 if (sigfd == -2)
2269 { 2765 {
2270#ifndef _WIN32 2766 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 2767 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 2768 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 2769
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2770 if (sigfd >= 0)
2771 {
2772 fd_intern (sigfd); /* doing it twice will not hurt */
2277 2773
2278#ifndef _WIN32 2774 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 2775
2280#endif 2776 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2777 ev_set_priority (&sigfd_w, EV_MAXPRI);
2778 ev_io_start (EV_A_ &sigfd_w);
2779 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2780 }
2281 } 2781 }
2782
2783 if (sigfd >= 0)
2784 {
2785 /* TODO: check .head */
2786 sigaddset (&sigfd_set, w->signum);
2787 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2788
2789 signalfd (sigfd, &sigfd_set, 0);
2790 }
2791#endif
2282 2792
2283 ev_start (EV_A_ (W)w, 1); 2793 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 2794 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 2795
2286 if (!((WL)w)->next) 2796 if (!((WL)w)->next)
2797# if EV_USE_SIGNALFD
2798 if (sigfd < 0) /*TODO*/
2799# endif
2287 { 2800 {
2288#if _WIN32 2801# ifdef _WIN32
2802 evpipe_init (EV_A);
2803
2289 signal (w->signum, ev_sighandler); 2804 signal (w->signum, ev_sighandler);
2290#else 2805# else
2291 struct sigaction sa; 2806 struct sigaction sa;
2807
2808 evpipe_init (EV_A);
2809
2292 sa.sa_handler = ev_sighandler; 2810 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 2811 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2812 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 2813 sigaction (w->signum, &sa, 0);
2814
2815 sigemptyset (&sa.sa_mask);
2816 sigaddset (&sa.sa_mask, w->signum);
2817 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2296#endif 2818#endif
2297 } 2819 }
2298 2820
2299 EV_FREQUENT_CHECK; 2821 EV_FREQUENT_CHECK;
2300} 2822}
2301 2823
2302void noinline 2824void noinline
… …
2310 2832
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 2833 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 2834 ev_stop (EV_A_ (W)w);
2313 2835
2314 if (!signals [w->signum - 1].head) 2836 if (!signals [w->signum - 1].head)
2837 {
2838#if EV_MULTIPLICITY
2839 signals [w->signum - 1].loop = 0; /* unattach from signal */
2840#endif
2841#if EV_USE_SIGNALFD
2842 if (sigfd >= 0)
2843 {
2844 sigset_t ss;
2845
2846 sigemptyset (&ss);
2847 sigaddset (&ss, w->signum);
2848 sigdelset (&sigfd_set, w->signum);
2849
2850 signalfd (sigfd, &sigfd_set, 0);
2851 sigprocmask (SIG_UNBLOCK, &ss, 0);
2852 }
2853 else
2854#endif
2315 signal (w->signum, SIG_DFL); 2855 signal (w->signum, SIG_DFL);
2856 }
2316 2857
2317 EV_FREQUENT_CHECK; 2858 EV_FREQUENT_CHECK;
2318} 2859}
2860
2861#endif
2862
2863#if EV_CHILD_ENABLE
2319 2864
2320void 2865void
2321ev_child_start (EV_P_ ev_child *w) 2866ev_child_start (EV_P_ ev_child *w)
2322{ 2867{
2323#if EV_MULTIPLICITY 2868#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2869 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 2870#endif
2326 if (expect_false (ev_is_active (w))) 2871 if (expect_false (ev_is_active (w)))
2327 return; 2872 return;
2328 2873
2329 EV_FREQUENT_CHECK; 2874 EV_FREQUENT_CHECK;
2330 2875
2331 ev_start (EV_A_ (W)w, 1); 2876 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2877 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 2878
2334 EV_FREQUENT_CHECK; 2879 EV_FREQUENT_CHECK;
2335} 2880}
2336 2881
2337void 2882void
… …
2341 if (expect_false (!ev_is_active (w))) 2886 if (expect_false (!ev_is_active (w)))
2342 return; 2887 return;
2343 2888
2344 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2345 2890
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2891 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 2892 ev_stop (EV_A_ (W)w);
2348 2893
2349 EV_FREQUENT_CHECK; 2894 EV_FREQUENT_CHECK;
2350} 2895}
2896
2897#endif
2351 2898
2352#if EV_STAT_ENABLE 2899#if EV_STAT_ENABLE
2353 2900
2354# ifdef _WIN32 2901# ifdef _WIN32
2355# undef lstat 2902# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 2903# define lstat(a,b) _stati64 (a,b)
2357# endif 2904# endif
2358 2905
2359#define DEF_STAT_INTERVAL 5.0074891 2906#define DEF_STAT_INTERVAL 5.0074891
2907#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 2908#define MIN_STAT_INTERVAL 0.1074891
2361 2909
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2910static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 2911
2364#if EV_USE_INOTIFY 2912#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192 2913
2914/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2366 2916
2367static void noinline 2917static void noinline
2368infy_add (EV_P_ ev_stat *w) 2918infy_add (EV_P_ ev_stat *w)
2369{ 2919{
2370 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); 2920 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);
2371 2921
2372 if (w->wd < 0) 2922 if (w->wd >= 0)
2923 {
2924 struct statfs sfs;
2925
2926 /* now local changes will be tracked by inotify, but remote changes won't */
2927 /* unless the filesystem is known to be local, we therefore still poll */
2928 /* also do poll on <2.6.25, but with normal frequency */
2929
2930 if (!fs_2625)
2931 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2932 else if (!statfs (w->path, &sfs)
2933 && (sfs.f_type == 0x1373 /* devfs */
2934 || sfs.f_type == 0xEF53 /* ext2/3 */
2935 || sfs.f_type == 0x3153464a /* jfs */
2936 || sfs.f_type == 0x52654973 /* reiser3 */
2937 || sfs.f_type == 0x01021994 /* tempfs */
2938 || sfs.f_type == 0x58465342 /* xfs */))
2939 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2940 else
2941 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 2942 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2943 else
2944 {
2945 /* can't use inotify, continue to stat */
2946 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 2947
2376 /* monitor some parent directory for speedup hints */ 2948 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2949 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 2950 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2951 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 2952 {
2381 char path [4096]; 2953 char path [4096];
2382 strcpy (path, w->path); 2954 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2958 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2959 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 2960
2389 char *pend = strrchr (path, '/'); 2961 char *pend = strrchr (path, '/');
2390 2962
2391 if (!pend) 2963 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 2964 break;
2393 2965
2394 *pend = 0; 2966 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 2967 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 2968 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 2970 }
2399 } 2971 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 2972
2403 if (w->wd >= 0) 2973 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2974 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2975
2976 /* now re-arm timer, if required */
2977 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2978 ev_timer_again (EV_A_ &w->timer);
2979 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2405} 2980}
2406 2981
2407static void noinline 2982static void noinline
2408infy_del (EV_P_ ev_stat *w) 2983infy_del (EV_P_ ev_stat *w)
2409{ 2984{
… …
2412 2987
2413 if (wd < 0) 2988 if (wd < 0)
2414 return; 2989 return;
2415 2990
2416 w->wd = -2; 2991 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 2992 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 2993 wlist_del (&fs_hash [slot].head, (WL)w);
2419 2994
2420 /* remove this watcher, if others are watching it, they will rearm */ 2995 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 2996 inotify_rm_watch (fs_fd, wd);
2422} 2997}
2423 2998
2424static void noinline 2999static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3000infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 3001{
2427 if (slot < 0) 3002 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3003 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3004 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3005 infy_wd (EV_A_ slot, wd, ev);
2431 else 3006 else
2432 { 3007 {
2433 WL w_; 3008 WL w_;
2434 3009
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3010 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3011 {
2437 ev_stat *w = (ev_stat *)w_; 3012 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 3013 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 3014
2440 if (w->wd == wd || wd == -1) 3015 if (w->wd == wd || wd == -1)
2441 { 3016 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3017 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3018 {
3019 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3020 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3021 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3022 }
2447 3023
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3024 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3029
2454static void 3030static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3031infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3032{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3033 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3034 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3035 int len = read (fs_fd, buf, sizeof (buf));
2461 3036
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3037 for (ofs = 0; ofs < len; )
3038 {
3039 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3040 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3041 ofs += sizeof (struct inotify_event) + ev->len;
3042 }
2464} 3043}
2465 3044
2466void inline_size 3045inline_size unsigned int
3046ev_linux_version (void)
3047{
3048 struct utsname buf;
3049 unsigned int v;
3050 int i;
3051 char *p = buf.release;
3052
3053 if (uname (&buf))
3054 return 0;
3055
3056 for (i = 3+1; --i; )
3057 {
3058 unsigned int c = 0;
3059
3060 for (;;)
3061 {
3062 if (*p >= '0' && *p <= '9')
3063 c = c * 10 + *p++ - '0';
3064 else
3065 {
3066 p += *p == '.';
3067 break;
3068 }
3069 }
3070
3071 v = (v << 8) | c;
3072 }
3073
3074 return v;
3075}
3076
3077inline_size void
3078ev_check_2625 (EV_P)
3079{
3080 /* kernels < 2.6.25 are borked
3081 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3082 */
3083 if (ev_linux_version () < 0x020619)
3084 return;
3085
3086 fs_2625 = 1;
3087}
3088
3089inline_size int
3090infy_newfd (void)
3091{
3092#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3093 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3094 if (fd >= 0)
3095 return fd;
3096#endif
3097 return inotify_init ();
3098}
3099
3100inline_size void
2467infy_init (EV_P) 3101infy_init (EV_P)
2468{ 3102{
2469 if (fs_fd != -2) 3103 if (fs_fd != -2)
2470 return; 3104 return;
2471 3105
3106 fs_fd = -1;
3107
3108 ev_check_2625 (EV_A);
3109
2472 fs_fd = inotify_init (); 3110 fs_fd = infy_newfd ();
2473 3111
2474 if (fs_fd >= 0) 3112 if (fs_fd >= 0)
2475 { 3113 {
3114 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3115 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3116 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3117 ev_io_start (EV_A_ &fs_w);
3118 ev_unref (EV_A);
2479 } 3119 }
2480} 3120}
2481 3121
2482void inline_size 3122inline_size void
2483infy_fork (EV_P) 3123infy_fork (EV_P)
2484{ 3124{
2485 int slot; 3125 int slot;
2486 3126
2487 if (fs_fd < 0) 3127 if (fs_fd < 0)
2488 return; 3128 return;
2489 3129
3130 ev_ref (EV_A);
3131 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3132 close (fs_fd);
2491 fs_fd = inotify_init (); 3133 fs_fd = infy_newfd ();
2492 3134
3135 if (fs_fd >= 0)
3136 {
3137 fd_intern (fs_fd);
3138 ev_io_set (&fs_w, fs_fd, EV_READ);
3139 ev_io_start (EV_A_ &fs_w);
3140 ev_unref (EV_A);
3141 }
3142
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3143 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3144 {
2495 WL w_ = fs_hash [slot].head; 3145 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3146 fs_hash [slot].head = 0;
2497 3147
2498 while (w_) 3148 while (w_)
… …
2503 w->wd = -1; 3153 w->wd = -1;
2504 3154
2505 if (fs_fd >= 0) 3155 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3156 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 3157 else
3158 {
3159 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3160 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 3161 ev_timer_again (EV_A_ &w->timer);
3162 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3163 }
2509 } 3164 }
2510
2511 } 3165 }
2512} 3166}
2513 3167
3168#endif
3169
3170#ifdef _WIN32
3171# define EV_LSTAT(p,b) _stati64 (p, b)
3172#else
3173# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3174#endif
2515 3175
2516void 3176void
2517ev_stat_stat (EV_P_ ev_stat *w) 3177ev_stat_stat (EV_P_ ev_stat *w)
2518{ 3178{
… …
2525static void noinline 3185static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3186stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3187{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3188 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3189
2530 /* we copy this here each the time so that */ 3190 ev_statdata prev = w->attr;
2531 /* prev has the old value when the callback gets invoked */
2532 w->prev = w->attr;
2533 ev_stat_stat (EV_A_ w); 3191 ev_stat_stat (EV_A_ w);
2534 3192
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3193 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 3194 if (
2537 w->prev.st_dev != w->attr.st_dev 3195 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3196 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3197 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3198 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3199 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3200 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3201 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3202 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3203 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3204 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3205 || prev.st_ctime != w->attr.st_ctime
2548 ) { 3206 ) {
3207 /* we only update w->prev on actual differences */
3208 /* in case we test more often than invoke the callback, */
3209 /* to ensure that prev is always different to attr */
3210 w->prev = prev;
3211
2549 #if EV_USE_INOTIFY 3212 #if EV_USE_INOTIFY
3213 if (fs_fd >= 0)
3214 {
2550 infy_del (EV_A_ w); 3215 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3216 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3217 ev_stat_stat (EV_A_ w); /* avoid race... */
3218 }
2553 #endif 3219 #endif
2554 3220
2555 ev_feed_event (EV_A_ w, EV_STAT); 3221 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3222 }
2557} 3223}
… …
2560ev_stat_start (EV_P_ ev_stat *w) 3226ev_stat_start (EV_P_ ev_stat *w)
2561{ 3227{
2562 if (expect_false (ev_is_active (w))) 3228 if (expect_false (ev_is_active (w)))
2563 return; 3229 return;
2564 3230
2565 /* since we use memcmp, we need to clear any padding data etc. */
2566 memset (&w->prev, 0, sizeof (ev_statdata));
2567 memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569 ev_stat_stat (EV_A_ w); 3231 ev_stat_stat (EV_A_ w);
2570 3232
3233 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3234 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3235
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3236 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575 ev_set_priority (&w->timer, ev_priority (w)); 3237 ev_set_priority (&w->timer, ev_priority (w));
2576 3238
2577#if EV_USE_INOTIFY 3239#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3240 infy_init (EV_A);
2579 3241
2580 if (fs_fd >= 0) 3242 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3243 infy_add (EV_A_ w);
2582 else 3244 else
2583#endif 3245#endif
3246 {
2584 ev_timer_start (EV_A_ &w->timer); 3247 ev_timer_again (EV_A_ &w->timer);
3248 ev_unref (EV_A);
3249 }
2585 3250
2586 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2587 3252
2588 EV_FREQUENT_CHECK; 3253 EV_FREQUENT_CHECK;
2589} 3254}
… …
2598 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2599 3264
2600#if EV_USE_INOTIFY 3265#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2602#endif 3267#endif
3268
3269 if (ev_is_active (&w->timer))
3270 {
3271 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3272 ev_timer_stop (EV_A_ &w->timer);
3273 }
2604 3274
2605 ev_stop (EV_A_ (W)w); 3275 ev_stop (EV_A_ (W)w);
2606 3276
2607 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2608} 3278}
… …
2653 3323
2654 EV_FREQUENT_CHECK; 3324 EV_FREQUENT_CHECK;
2655} 3325}
2656#endif 3326#endif
2657 3327
3328#if EV_PREPARE_ENABLE
2658void 3329void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3330ev_prepare_start (EV_P_ ev_prepare *w)
2660{ 3331{
2661 if (expect_false (ev_is_active (w))) 3332 if (expect_false (ev_is_active (w)))
2662 return; 3333 return;
… …
2688 3359
2689 ev_stop (EV_A_ (W)w); 3360 ev_stop (EV_A_ (W)w);
2690 3361
2691 EV_FREQUENT_CHECK; 3362 EV_FREQUENT_CHECK;
2692} 3363}
3364#endif
2693 3365
3366#if EV_CHECK_ENABLE
2694void 3367void
2695ev_check_start (EV_P_ ev_check *w) 3368ev_check_start (EV_P_ ev_check *w)
2696{ 3369{
2697 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
2698 return; 3371 return;
… …
2724 3397
2725 ev_stop (EV_A_ (W)w); 3398 ev_stop (EV_A_ (W)w);
2726 3399
2727 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
2728} 3401}
3402#endif
2729 3403
2730#if EV_EMBED_ENABLE 3404#if EV_EMBED_ENABLE
2731void noinline 3405void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 3406ev_embed_sweep (EV_P_ ev_embed *w)
2733{ 3407{
… …
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 3424{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 3426
2753 { 3427 {
2754 struct ev_loop *loop = w->other; 3428 EV_P = w->other;
2755 3429
2756 while (fdchangecnt) 3430 while (fdchangecnt)
2757 { 3431 {
2758 fd_reify (EV_A); 3432 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3433 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2760 } 3434 }
2761 } 3435 }
2762} 3436}
2763 3437
3438static void
3439embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3440{
3441 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3442
3443 ev_embed_stop (EV_A_ w);
3444
3445 {
3446 EV_P = w->other;
3447
3448 ev_loop_fork (EV_A);
3449 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3450 }
3451
3452 ev_embed_start (EV_A_ w);
3453}
3454
2764#if 0 3455#if 0
2765static void 3456static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3457embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2767{ 3458{
2768 ev_idle_stop (EV_A_ idle); 3459 ev_idle_stop (EV_A_ idle);
… …
2774{ 3465{
2775 if (expect_false (ev_is_active (w))) 3466 if (expect_false (ev_is_active (w)))
2776 return; 3467 return;
2777 3468
2778 { 3469 {
2779 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3471 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3472 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 3473 }
2783 3474
2784 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
2785 3476
… …
2788 3479
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 3480 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 3481 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 3482 ev_prepare_start (EV_A_ &w->prepare);
2792 3483
3484 ev_fork_init (&w->fork, embed_fork_cb);
3485 ev_fork_start (EV_A_ &w->fork);
3486
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3487 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 3488
2795 ev_start (EV_A_ (W)w, 1); 3489 ev_start (EV_A_ (W)w, 1);
2796 3490
2797 EV_FREQUENT_CHECK; 3491 EV_FREQUENT_CHECK;
… …
2804 if (expect_false (!ev_is_active (w))) 3498 if (expect_false (!ev_is_active (w)))
2805 return; 3499 return;
2806 3500
2807 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2808 3502
2809 ev_io_stop (EV_A_ &w->io); 3503 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 3504 ev_prepare_stop (EV_A_ &w->prepare);
3505 ev_fork_stop (EV_A_ &w->fork);
2811 3506
2812 ev_stop (EV_A_ (W)w); 3507 ev_stop (EV_A_ (W)w);
2813 3508
2814 EV_FREQUENT_CHECK; 3509 EV_FREQUENT_CHECK;
2815} 3510}
… …
2894 3589
2895void 3590void
2896ev_async_send (EV_P_ ev_async *w) 3591ev_async_send (EV_P_ ev_async *w)
2897{ 3592{
2898 w->sent = 1; 3593 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 3594 evpipe_write (EV_A_ &async_pending);
2900} 3595}
2901#endif 3596#endif
2902 3597
2903/*****************************************************************************/ 3598/*****************************************************************************/
2904 3599
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 3609once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 3610{
2916 void (*cb)(int revents, void *arg) = once->cb; 3611 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 3612 void *arg = once->arg;
2918 3613
2919 ev_io_stop (EV_A_ &once->io); 3614 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 3615 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 3616 ev_free (once);
2922 3617
2923 cb (revents, arg); 3618 cb (revents, arg);
2924} 3619}
2925 3620
2926static void 3621static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 3622once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 3623{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3624 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3625
3626 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 3627}
2931 3628
2932static void 3629static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 3630once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 3631{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3632 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3633
3634 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 3635}
2937 3636
2938void 3637void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3638ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940{ 3639{
2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3640 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2942 3641
2943 if (expect_false (!once)) 3642 if (expect_false (!once))
2944 { 3643 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3644 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2946 return; 3645 return;
2947 } 3646 }
2948 3647
2949 once->cb = cb; 3648 once->cb = cb;
2950 once->arg = arg; 3649 once->arg = arg;
… …
2962 ev_timer_set (&once->to, timeout, 0.); 3661 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 3662 ev_timer_start (EV_A_ &once->to);
2964 } 3663 }
2965} 3664}
2966 3665
3666/*****************************************************************************/
3667
3668#if EV_WALK_ENABLE
3669void
3670ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3671{
3672 int i, j;
3673 ev_watcher_list *wl, *wn;
3674
3675 if (types & (EV_IO | EV_EMBED))
3676 for (i = 0; i < anfdmax; ++i)
3677 for (wl = anfds [i].head; wl; )
3678 {
3679 wn = wl->next;
3680
3681#if EV_EMBED_ENABLE
3682 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3683 {
3684 if (types & EV_EMBED)
3685 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3686 }
3687 else
3688#endif
3689#if EV_USE_INOTIFY
3690 if (ev_cb ((ev_io *)wl) == infy_cb)
3691 ;
3692 else
3693#endif
3694 if ((ev_io *)wl != &pipe_w)
3695 if (types & EV_IO)
3696 cb (EV_A_ EV_IO, wl);
3697
3698 wl = wn;
3699 }
3700
3701 if (types & (EV_TIMER | EV_STAT))
3702 for (i = timercnt + HEAP0; i-- > HEAP0; )
3703#if EV_STAT_ENABLE
3704 /*TODO: timer is not always active*/
3705 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3706 {
3707 if (types & EV_STAT)
3708 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3709 }
3710 else
3711#endif
3712 if (types & EV_TIMER)
3713 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3714
3715#if EV_PERIODIC_ENABLE
3716 if (types & EV_PERIODIC)
3717 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3718 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3719#endif
3720
3721#if EV_IDLE_ENABLE
3722 if (types & EV_IDLE)
3723 for (j = NUMPRI; i--; )
3724 for (i = idlecnt [j]; i--; )
3725 cb (EV_A_ EV_IDLE, idles [j][i]);
3726#endif
3727
3728#if EV_FORK_ENABLE
3729 if (types & EV_FORK)
3730 for (i = forkcnt; i--; )
3731 if (ev_cb (forks [i]) != embed_fork_cb)
3732 cb (EV_A_ EV_FORK, forks [i]);
3733#endif
3734
3735#if EV_ASYNC_ENABLE
3736 if (types & EV_ASYNC)
3737 for (i = asynccnt; i--; )
3738 cb (EV_A_ EV_ASYNC, asyncs [i]);
3739#endif
3740
3741#if EV_PREPARE_ENABLE
3742 if (types & EV_PREPARE)
3743 for (i = preparecnt; i--; )
3744# if EV_EMBED_ENABLE
3745 if (ev_cb (prepares [i]) != embed_prepare_cb)
3746# endif
3747 cb (EV_A_ EV_PREPARE, prepares [i]);
3748#endif
3749
3750#if EV_CHECK_ENABLE
3751 if (types & EV_CHECK)
3752 for (i = checkcnt; i--; )
3753 cb (EV_A_ EV_CHECK, checks [i]);
3754#endif
3755
3756#if EV_SIGNAL_ENABLE
3757 if (types & EV_SIGNAL)
3758 for (i = 0; i < EV_NSIG - 1; ++i)
3759 for (wl = signals [i].head; wl; )
3760 {
3761 wn = wl->next;
3762 cb (EV_A_ EV_SIGNAL, wl);
3763 wl = wn;
3764 }
3765#endif
3766
3767#if EV_CHILD_ENABLE
3768 if (types & EV_CHILD)
3769 for (i = (EV_PID_HASHSIZE); i--; )
3770 for (wl = childs [i]; wl; )
3771 {
3772 wn = wl->next;
3773 cb (EV_A_ EV_CHILD, wl);
3774 wl = wn;
3775 }
3776#endif
3777/* EV_STAT 0x00001000 /* stat data changed */
3778/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3779}
3780#endif
3781
2967#if EV_MULTIPLICITY 3782#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 3783 #include "ev_wrap.h"
2969#endif 3784#endif
2970 3785
2971#ifdef __cplusplus 3786#ifdef __cplusplus

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