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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 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) 2007,2008,2009 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 *
79# endif 79# endif
80# endif 80# endif
81 81
82# ifndef EV_USE_NANOSLEEP 82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP 83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 84# define EV_USE_NANOSLEEP EV_FEATURE_OS
85# else 85# else
86# define EV_USE_NANOSLEEP 0 86# define EV_USE_NANOSLEEP 0
87# endif 87# endif
88# endif 88# endif
89 89
90# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# define EV_USE_SELECT 1 92# define EV_USE_SELECT EV_FEATURE_BACKENDS
93# else 93# else
94# define EV_USE_SELECT 0 94# define EV_USE_SELECT 0
95# endif 95# endif
96# endif 96# endif
97 97
98# ifndef EV_USE_POLL 98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H 99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1 100# define EV_USE_POLL EV_FEATURE_BACKENDS
101# else 101# else
102# define EV_USE_POLL 0 102# define EV_USE_POLL 0
103# endif 103# endif
104# endif 104# endif
105 105
106# ifndef EV_USE_EPOLL 106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 108# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109# else 109# else
110# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
111# endif 111# endif
112# endif 112# endif
113 113
114# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117# else 117# else
118# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
119# endif 119# endif
120# endif 120# endif
121 121
122# ifndef EV_USE_PORT 122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 124# define EV_USE_PORT EV_FEATURE_BACKENDS
125# else 125# else
126# define EV_USE_PORT 0 126# define EV_USE_PORT 0
127# endif 127# endif
128# endif 128# endif
129 129
130# ifndef EV_USE_INOTIFY 130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 132# define EV_USE_INOTIFY EV_FEATURE_OS
133# else 133# else
134# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
135# endif 135# endif
136# endif 136# endif
137 137
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
138# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
139# if HAVE_EVENTFD 147# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD EV_FEATURE_OS
141# else 149# else
142# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
143# endif 151# endif
144# endif 152# endif
145 153
146#endif 154#endif
147 155
148#include <math.h> 156#include <math.h>
149#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
150#include <fcntl.h> 159#include <fcntl.h>
151#include <stddef.h> 160#include <stddef.h>
152 161
153#include <stdio.h> 162#include <stdio.h>
154 163
155#include <assert.h> 164#include <assert.h>
156#include <errno.h> 165#include <errno.h>
157#include <sys/types.h> 166#include <sys/types.h>
158#include <time.h> 167#include <time.h>
168#include <limits.h>
159 169
160#include <signal.h> 170#include <signal.h>
161 171
162#ifdef EV_H 172#ifdef EV_H
163# include EV_H 173# include EV_H
174# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 185# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
178# endif 188# endif
189# undef EV_AVOID_STDIO
179#endif 190#endif
180 191
181/* 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 */
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
182 221
183#ifndef EV_USE_CLOCK_SYSCALL 222#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 223# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 225# else
187# define EV_USE_CLOCK_SYSCALL 0 226# define EV_USE_CLOCK_SYSCALL 0
188# endif 227# endif
189#endif 228#endif
190 229
191#ifndef EV_USE_MONOTONIC 230#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 232# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 233# else
195# define EV_USE_MONOTONIC 0 234# define EV_USE_MONOTONIC 0
196# endif 235# endif
197#endif 236#endif
198 237
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 240#endif
202 241
203#ifndef EV_USE_NANOSLEEP 242#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 243# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 244# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 245# else
207# define EV_USE_NANOSLEEP 0 246# define EV_USE_NANOSLEEP 0
208# endif 247# endif
209#endif 248#endif
210 249
211#ifndef EV_USE_SELECT 250#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 251# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 252#endif
214 253
215#ifndef EV_USE_POLL 254#ifndef EV_USE_POLL
216# ifdef _WIN32 255# ifdef _WIN32
217# define EV_USE_POLL 0 256# define EV_USE_POLL 0
218# else 257# else
219# define EV_USE_POLL 1 258# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 259# endif
221#endif 260#endif
222 261
223#ifndef EV_USE_EPOLL 262#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 264# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 265# else
227# define EV_USE_EPOLL 0 266# define EV_USE_EPOLL 0
228# endif 267# endif
229#endif 268#endif
230 269
236# define EV_USE_PORT 0 275# define EV_USE_PORT 0
237#endif 276#endif
238 277
239#ifndef EV_USE_INOTIFY 278#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 280# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 281# else
243# define EV_USE_INOTIFY 0 282# define EV_USE_INOTIFY 0
244# endif 283# endif
245#endif 284#endif
246 285
247#ifndef EV_PID_HASHSIZE 286#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 287# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 288#endif
254 289
255#ifndef EV_INOTIFY_HASHSIZE 290#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 291# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 292#endif
262 293
263#ifndef EV_USE_EVENTFD 294#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 295# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 296# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 297# else
267# 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
268# endif 307# endif
269#endif 308#endif
270 309
271#if 0 /* debugging */ 310#if 0 /* debugging */
272# define EV_VERIFY 3 311# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 312# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 313# define EV_HEAP_CACHE_AT 1
275#endif 314#endif
276 315
277#ifndef EV_VERIFY 316#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 317# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 318#endif
280 319
281#ifndef EV_USE_4HEAP 320#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 321# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 322#endif
284 323
285#ifndef EV_HEAP_CACHE_AT 324#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 325# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 326#endif
288 327
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 328/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 329/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 330#if EV_USE_CLOCK_SYSCALL
300# endif 339# endif
301#endif 340#endif
302 341
303/* 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 */
304 343
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
349
305#ifndef CLOCK_MONOTONIC 350#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 351# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 352# define EV_USE_MONOTONIC 0
308#endif 353#endif
309 354
339#endif 384#endif
340 385
341#if EV_USE_EVENTFD 386#if EV_USE_EVENTFD
342/* 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 */
343# 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
344# ifdef __cplusplus 399# ifdef __cplusplus
345extern "C" { 400extern "C" {
346# endif 401# endif
347int eventfd (unsigned int initval, int flags); 402int (eventfd) (unsigned int initval, int flags);
348# ifdef __cplusplus 403# ifdef __cplusplus
349} 404}
350# endif 405# endif
351#endif 406#endif
352 407
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
353/**/ 437/**/
354 438
355#if EV_VERIFY >= 3 439#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 440# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 441#else
358# define EV_FREQUENT_CHECK do { } while (0) 442# define EV_FREQUENT_CHECK do { } while (0)
359#endif 443#endif
360 444
361/* 445/*
368 */ 452 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370 454
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 457
375#if __GNUC__ >= 4 458#if __GNUC__ >= 4
376# define expect(expr,value) __builtin_expect ((expr),(value)) 459# define expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline)) 460# define noinline __attribute__ ((noinline))
378#else 461#else
385 468
386#define expect_false(expr) expect ((expr) != 0, 0) 469#define expect_false(expr) expect ((expr) != 0, 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 470#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline 471#define inline_size static inline
389 472
390#if EV_MINIMAL 473#if EV_FEATURE_CODE
474# define inline_speed static inline
475#else
391# 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)
392#else 483#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 484# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
485#endif
398 486
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 487#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 488#define EMPTY2(a,b) /* used to suppress some warnings */
401 489
402typedef ev_watcher *W; 490typedef ev_watcher *W;
414 502
415#if EV_USE_MONOTONIC 503#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 505#endif
418 506
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)
515#endif
516
419#ifdef _WIN32 517#ifdef _WIN32
420# include "ev_win32.c" 518# include "ev_win32.c"
421#endif 519#endif
422 520
423/*****************************************************************************/ 521/*****************************************************************************/
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
424 530
425static void (*syserr_cb)(const char *msg); 531static void (*syserr_cb)(const char *msg);
426 532
427void 533void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 534ev_set_syserr_cb (void (*cb)(const char *msg))
438 544
439 if (syserr_cb) 545 if (syserr_cb)
440 syserr_cb (msg); 546 syserr_cb (msg);
441 else 547 else
442 { 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
443 perror (msg); 557 perror (msg);
558#endif
444 abort (); 559 abort ();
445 } 560 }
446} 561}
447 562
448static void * 563static void *
449ev_realloc_emul (void *ptr, long size) 564ev_realloc_emul (void *ptr, long size)
450{ 565{
566#if __GLIBC__
567 return realloc (ptr, size);
568#else
451 /* some systems, notably openbsd and darwin, fail to properly 569 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * the single unix specification, so work around them here. 571 * the single unix specification, so work around them here.
454 */ 572 */
455 573
456 if (size) 574 if (size)
457 return realloc (ptr, size); 575 return realloc (ptr, size);
458 576
459 free (ptr); 577 free (ptr);
460 return 0; 578 return 0;
579#endif
461} 580}
462 581
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 583
465void 584void
473{ 592{
474 ptr = alloc (ptr, size); 593 ptr = alloc (ptr, size);
475 594
476 if (!ptr && size) 595 if (!ptr && size)
477 { 596 {
597#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n");
599#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
601#endif
479 abort (); 602 abort ();
480 } 603 }
481 604
482 return ptr; 605 return ptr;
483} 606}
485#define ev_malloc(size) ev_realloc (0, (size)) 608#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 609#define ev_free(ptr) ev_realloc ((ptr), 0)
487 610
488/*****************************************************************************/ 611/*****************************************************************************/
489 612
613/* set in reify when reification needed */
614#define EV_ANFD_REIFY 1
615
490/* file descriptor info structure */ 616/* file descriptor info structure */
491typedef struct 617typedef struct
492{ 618{
493 WL head; 619 WL head;
494 unsigned char events; /* the events watched for */ 620 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 621 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 623 unsigned char unused;
498#if EV_USE_EPOLL 624#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 625 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 626#endif
562 688
563 static int ev_default_loop_ptr; 689 static int ev_default_loop_ptr;
564 690
565#endif 691#endif
566 692
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
567/*****************************************************************************/ 705/*****************************************************************************/
568 706
569#ifndef EV_HAVE_EV_TIME 707#ifndef EV_HAVE_EV_TIME
570ev_tstamp 708ev_tstamp
571ev_time (void) 709ev_time (void)
627 765
628 tv.tv_sec = (time_t)delay; 766 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630 768
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 770 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 771 /* by older ones */
634 select (0, 0, 0, 0, &tv); 772 select (0, 0, 0, 0, &tv);
635#endif 773#endif
636 } 774 }
637} 775}
745} 883}
746 884
747/*****************************************************************************/ 885/*****************************************************************************/
748 886
749inline_speed void 887inline_speed void
750fd_event (EV_P_ int fd, int revents) 888fd_event_nocheck (EV_P_ int fd, int revents)
751{ 889{
752 ANFD *anfd = anfds + fd; 890 ANFD *anfd = anfds + fd;
753 ev_io *w; 891 ev_io *w;
754 892
755 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)
759 if (ev) 897 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 898 ev_feed_event (EV_A_ (W)w, ev);
761 } 899 }
762} 900}
763 901
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
764void 913void
765ev_feed_fd_event (EV_P_ int fd, int revents) 914ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 915{
767 if (fd >= 0 && fd < anfdmax) 916 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 917 fd_event_nocheck (EV_A_ fd, revents);
769} 918}
770 919
771/* make sure the external fd watch events are in-sync */ 920/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 921/* with the kernel/libev internal state */
773inline_size void 922inline_size void
788 937
789#if EV_SELECT_IS_WINSOCKET 938#if EV_SELECT_IS_WINSOCKET
790 if (events) 939 if (events)
791 { 940 {
792 unsigned long arg; 941 unsigned long arg;
793 #ifdef EV_FD_TO_WIN32_HANDLE
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795 #else
796 anfd->handle = _get_osfhandle (fd);
797 #endif
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
799 } 944 }
800#endif 945#endif
801 946
802 { 947 {
840 ev_io_stop (EV_A_ w); 985 ev_io_stop (EV_A_ w);
841 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);
842 } 987 }
843} 988}
844 989
845/* check whether the given fd is atcually valid, for error recovery */ 990/* check whether the given fd is actually valid, for error recovery */
846inline_size int 991inline_size int
847fd_valid (int fd) 992fd_valid (int fd)
848{ 993{
849#ifdef _WIN32 994#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 995 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 996#else
852 return fcntl (fd, F_GETFD) != -1; 997 return fcntl (fd, F_GETFD) != -1;
853#endif 998#endif
854} 999}
855 1000
873 1018
874 for (fd = anfdmax; fd--; ) 1019 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1020 if (anfds [fd].events)
876 { 1021 {
877 fd_kill (EV_A_ fd); 1022 fd_kill (EV_A_ fd);
878 return; 1023 break;
879 } 1024 }
880} 1025}
881 1026
882/* 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 */
883static void noinline 1028static void noinline
888 for (fd = 0; fd < anfdmax; ++fd) 1033 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1034 if (anfds [fd].events)
890 { 1035 {
891 anfds [fd].events = 0; 1036 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1037 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1038 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 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
895} 1054}
896 1055
897/*****************************************************************************/ 1056/*****************************************************************************/
898 1057
899/* 1058/*
973 1132
974 for (;;) 1133 for (;;)
975 { 1134 {
976 int c = k << 1; 1135 int c = k << 1;
977 1136
978 if (c > N + HEAP0 - 1) 1137 if (c >= N + HEAP0)
979 break; 1138 break;
980 1139
981 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])
982 ? 1 : 0; 1141 ? 1 : 0;
983 1142
1019 1178
1020/* move an element suitably so it is in a correct place */ 1179/* move an element suitably so it is in a correct place */
1021inline_size void 1180inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1181adjustheap (ANHE *heap, int N, int k)
1023{ 1182{
1024 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)]))
1025 upheap (heap, k); 1184 upheap (heap, k);
1026 else 1185 else
1027 downheap (heap, N, k); 1186 downheap (heap, N, k);
1028} 1187}
1029 1188
1042/*****************************************************************************/ 1201/*****************************************************************************/
1043 1202
1044/* associate signal watchers to a signal signal */ 1203/* associate signal watchers to a signal signal */
1045typedef struct 1204typedef struct
1046{ 1205{
1206 EV_ATOMIC_T pending;
1207#if EV_MULTIPLICITY
1208 EV_P;
1209#endif
1047 WL head; 1210 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1211} ANSIG;
1050 1212
1051static ANSIG *signals; 1213static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1214
1056/*****************************************************************************/ 1215/*****************************************************************************/
1057 1216
1058/* used to prepare libev internal fd's */ 1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1218
1072static void noinline 1219static void noinline
1073evpipe_init (EV_P) 1220evpipe_init (EV_P)
1074{ 1221{
1075 if (!ev_is_active (&pipe_w)) 1222 if (!ev_is_active (&pipe_w))
1076 { 1223 {
1077#if EV_USE_EVENTFD 1224# if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
1079 { 1230 {
1080 evpipe [0] = -1; 1231 evpipe [0] = -1;
1081 fd_intern (evfd); 1232 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1233 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1234 }
1084 else 1235 else
1085#endif 1236# endif
1086 { 1237 {
1087 while (pipe (evpipe)) 1238 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1239 ev_syserr ("(libev) error creating signal/async pipe");
1089 1240
1090 fd_intern (evpipe [0]); 1241 fd_intern (evpipe [0]);
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1253{
1103 if (!*flag) 1254 if (!*flag)
1104 { 1255 {
1105 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;
1106 1258
1107 *flag = 1; 1259 *flag = 1;
1108 1260
1109#if EV_USE_EVENTFD 1261#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1262 if (evfd >= 0)
1112 uint64_t counter = 1; 1264 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1265 write (evfd, &counter, sizeof (uint64_t));
1114 } 1266 }
1115 else 1267 else
1116#endif 1268#endif
1117 write (evpipe [1], &old_errno, 1); 1269 write (evpipe [1], &dummy, 1);
1118 1270
1119 errno = old_errno; 1271 errno = old_errno;
1120 } 1272 }
1121} 1273}
1122 1274
1123/* called whenever the libev signal pipe */ 1275/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1276/* got some events (signal, async) */
1125static void 1277static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1278pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1279{
1280 int i;
1281
1128#if EV_USE_EVENTFD 1282#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1283 if (evfd >= 0)
1130 { 1284 {
1131 uint64_t counter; 1285 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1286 read (evfd, &counter, sizeof (uint64_t));
1136 { 1290 {
1137 char dummy; 1291 char dummy;
1138 read (evpipe [0], &dummy, 1); 1292 read (evpipe [0], &dummy, 1);
1139 } 1293 }
1140 1294
1141 if (gotsig && ev_is_default_loop (EV_A)) 1295 if (sig_pending)
1142 { 1296 {
1143 int signum; 1297 sig_pending = 0;
1144 gotsig = 0;
1145 1298
1146 for (signum = signalmax; signum--; ) 1299 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1300 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1301 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1302 }
1150 1303
1151#if EV_ASYNC_ENABLE 1304#if EV_ASYNC_ENABLE
1152 if (gotasync) 1305 if (async_pending)
1153 { 1306 {
1154 int i; 1307 async_pending = 0;
1155 gotasync = 0;
1156 1308
1157 for (i = asynccnt; i--; ) 1309 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1310 if (asyncs [i]->sent)
1159 { 1311 {
1160 asyncs [i]->sent = 0; 1312 asyncs [i]->sent = 0;
1168 1320
1169static void 1321static void
1170ev_sighandler (int signum) 1322ev_sighandler (int signum)
1171{ 1323{
1172#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 1325 EV_P = signals [signum - 1].loop;
1174#endif 1326#endif
1175 1327
1176#if _WIN32 1328#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1329 signal (signum, ev_sighandler);
1178#endif 1330#endif
1179 1331
1180 signals [signum - 1].gotsig = 1; 1332 signals [signum - 1].pending = 1;
1181 evpipe_write (EV_A_ &gotsig); 1333 evpipe_write (EV_A_ &sig_pending);
1182} 1334}
1183 1335
1184void noinline 1336void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1337ev_feed_signal_event (EV_P_ int signum)
1186{ 1338{
1187 WL w; 1339 WL w;
1188 1340
1341 if (expect_false (signum <= 0 || signum > EV_NSIG))
1342 return;
1343
1344 --signum;
1345
1189#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
1190 assert (("libev: 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 */
1191#endif 1348 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1349
1193 --signum; 1350 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1351 return;
1352#endif
1197 1353
1198 signals [signum].gotsig = 0; 1354 signals [signum].pending = 0;
1199 1355
1200 for (w = signals [signum].head; w; w = w->next) 1356 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1358}
1203 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
1204/*****************************************************************************/ 1382/*****************************************************************************/
1205 1383
1384#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1385static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1386
1210static ev_signal childev; 1387static ev_signal childev;
1211 1388
1212#ifndef WIFCONTINUED 1389#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1390# define WIFCONTINUED(status) 0
1218child_reap (EV_P_ int chain, int pid, int status) 1395child_reap (EV_P_ int chain, int pid, int status)
1219{ 1396{
1220 ev_child *w; 1397 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1398 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1399
1223 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)
1224 { 1401 {
1225 if ((w->pid == pid || !w->pid) 1402 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1403 && (!traced || (w->flags & 1)))
1227 { 1404 {
1228 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 */
1253 /* 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 */
1254 /* 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 */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1432 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 1433
1257 child_reap (EV_A_ pid, pid, status); 1434 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 1435 if ((EV_PID_HASHSIZE) > 1)
1259 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 */
1260} 1437}
1261 1438
1262#endif 1439#endif
1263 1440
1330#ifdef __APPLE__ 1507#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 1508 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 1511#endif
1512#ifdef __FreeBSD__
1513 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1514#endif
1335 1515
1336 return flags; 1516 return flags;
1337} 1517}
1338 1518
1339unsigned int 1519unsigned int
1352ev_backend (EV_P) 1532ev_backend (EV_P)
1353{ 1533{
1354 return backend; 1534 return backend;
1355} 1535}
1356 1536
1537#if EV_FEATURE_API
1357unsigned int 1538unsigned int
1358ev_loop_count (EV_P) 1539ev_iteration (EV_P)
1359{ 1540{
1360 return loop_count; 1541 return loop_count;
1361} 1542}
1362 1543
1363unsigned int 1544unsigned int
1364ev_loop_depth (EV_P) 1545ev_depth (EV_P)
1365{ 1546{
1366 return loop_depth; 1547 return loop_depth;
1367} 1548}
1368 1549
1369void 1550void
1375void 1556void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1377{ 1558{
1378 timeout_blocktime = interval; 1559 timeout_blocktime = interval;
1379} 1560}
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
1380 1585
1381/* initialise a loop structure, must be zero-initialised */ 1586/* initialise a loop structure, must be zero-initialised */
1382static void noinline 1587static void noinline
1383loop_init (EV_P_ unsigned int flags) 1588loop_init (EV_P_ unsigned int flags)
1384{ 1589{
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1607 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 1608 have_monotonic = 1;
1404 } 1609 }
1405#endif 1610#endif
1406 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"));
1622
1407 ev_rt_now = ev_time (); 1623 ev_rt_now = ev_time ();
1408 mn_now = get_clock (); 1624 mn_now = get_clock ();
1409 now_floor = mn_now; 1625 now_floor = mn_now;
1410 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
1411 1630
1412 io_blocktime = 0.; 1631 io_blocktime = 0.;
1413 timeout_blocktime = 0.; 1632 timeout_blocktime = 0.;
1414 backend = 0; 1633 backend = 0;
1415 backend_fd = -1; 1634 backend_fd = -1;
1416 gotasync = 0; 1635 sig_pending = 0;
1636#if EV_ASYNC_ENABLE
1637 async_pending = 0;
1638#endif
1417#if EV_USE_INOTIFY 1639#if EV_USE_INOTIFY
1418 fs_fd = -2; 1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1419#endif 1641#endif
1420 1642#if EV_USE_SIGNALFD
1421 /* pid check not overridable via env */ 1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1422#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid ();
1425#endif 1644#endif
1426
1427 if (!(flags & EVFLAG_NOENV)
1428 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS"));
1431 1645
1432 if (!(flags & 0x0000ffffU)) 1646 if (!(flags & 0x0000ffffU))
1433 flags |= ev_recommended_backends (); 1647 flags |= ev_recommended_backends ();
1434 1648
1435#if EV_USE_PORT 1649#if EV_USE_PORT
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1662 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1449#endif 1663#endif
1450 1664
1451 ev_prepare_init (&pending_w, pendingcb); 1665 ev_prepare_init (&pending_w, pendingcb);
1452 1666
1667#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 1668 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 1669 ev_set_priority (&pipe_w, EV_MAXPRI);
1670#endif
1455 } 1671 }
1456} 1672}
1457 1673
1458/* free up a loop structure */ 1674/* free up a loop structure */
1459static void noinline 1675static void noinline
1461{ 1677{
1462 int i; 1678 int i;
1463 1679
1464 if (ev_is_active (&pipe_w)) 1680 if (ev_is_active (&pipe_w))
1465 { 1681 {
1466 ev_ref (EV_A); /* signal watcher */ 1682 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 1683 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 1684
1469#if EV_USE_EVENTFD 1685#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1686 if (evfd >= 0)
1471 close (evfd); 1687 close (evfd);
1472#endif 1688#endif
1473 1689
1474 if (evpipe [0] >= 0) 1690 if (evpipe [0] >= 0)
1475 { 1691 {
1476 close (evpipe [0]); 1692 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1693 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1694 }
1479 } 1695 }
1696
1697#if EV_USE_SIGNALFD
1698 if (ev_is_active (&sigfd_w))
1699 close (sigfd);
1700#endif
1480 1701
1481#if EV_USE_INOTIFY 1702#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 1703 if (fs_fd >= 0)
1483 close (fs_fd); 1704 close (fs_fd);
1484#endif 1705#endif
1508#if EV_IDLE_ENABLE 1729#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 1730 array_free (idle, [i]);
1510#endif 1731#endif
1511 } 1732 }
1512 1733
1513 ev_free (anfds); anfdmax = 0; 1734 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 1735
1515 /* have to use the microsoft-never-gets-it-right macro */ 1736 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 1737 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 1738 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 1739 array_free (timer, EMPTY);
1553 1774
1554 if (ev_is_active (&pipe_w)) 1775 if (ev_is_active (&pipe_w))
1555 { 1776 {
1556 /* this "locks" the handlers against writing to the pipe */ 1777 /* this "locks" the handlers against writing to the pipe */
1557 /* while we modify the fd vars */ 1778 /* while we modify the fd vars */
1558 gotsig = 1; 1779 sig_pending = 1;
1559#if EV_ASYNC_ENABLE 1780#if EV_ASYNC_ENABLE
1560 gotasync = 1; 1781 async_pending = 1;
1561#endif 1782#endif
1562 1783
1563 ev_ref (EV_A); 1784 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 1785 ev_io_stop (EV_A_ &pipe_w);
1565 1786
1568 close (evfd); 1789 close (evfd);
1569#endif 1790#endif
1570 1791
1571 if (evpipe [0] >= 0) 1792 if (evpipe [0] >= 0)
1572 { 1793 {
1573 close (evpipe [0]); 1794 EV_WIN32_CLOSE_FD (evpipe [0]);
1574 close (evpipe [1]); 1795 EV_WIN32_CLOSE_FD (evpipe [1]);
1575 } 1796 }
1576 1797
1798#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1577 evpipe_init (EV_A); 1799 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 1800 /* now iterate over everything, in case we missed something */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 1801 pipecb (EV_A_ &pipe_w, EV_READ);
1802#endif
1580 } 1803 }
1581 1804
1582 postfork = 0; 1805 postfork = 0;
1583} 1806}
1584 1807
1585#if EV_MULTIPLICITY 1808#if EV_MULTIPLICITY
1586 1809
1587struct ev_loop * 1810struct ev_loop *
1588ev_loop_new (unsigned int flags) 1811ev_loop_new (unsigned int flags)
1589{ 1812{
1590 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));
1591 1814
1592 memset (loop, 0, sizeof (struct ev_loop)); 1815 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 1816 loop_init (EV_A_ flags);
1595 1817
1596 if (ev_backend (EV_A)) 1818 if (ev_backend (EV_A))
1597 return loop; 1819 return EV_A;
1598 1820
1599 return 0; 1821 return 0;
1600} 1822}
1601 1823
1602void 1824void
1609void 1831void
1610ev_loop_fork (EV_P) 1832ev_loop_fork (EV_P)
1611{ 1833{
1612 postfork = 1; /* must be in line with ev_default_fork */ 1834 postfork = 1; /* must be in line with ev_default_fork */
1613} 1835}
1836#endif /* multiplicity */
1614 1837
1615#if EV_VERIFY 1838#if EV_VERIFY
1616static void noinline 1839static void noinline
1617verify_watcher (EV_P_ W w) 1840verify_watcher (EV_P_ W w)
1618{ 1841{
1646 verify_watcher (EV_A_ ws [cnt]); 1869 verify_watcher (EV_A_ ws [cnt]);
1647 } 1870 }
1648} 1871}
1649#endif 1872#endif
1650 1873
1874#if EV_FEATURE_API
1651void 1875void
1652ev_loop_verify (EV_P) 1876ev_verify (EV_P)
1653{ 1877{
1654#if EV_VERIFY 1878#if EV_VERIFY
1655 int i; 1879 int i;
1656 WL w; 1880 WL w;
1657 1881
1696#if EV_ASYNC_ENABLE 1920#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 1921 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 1922 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 1923#endif
1700 1924
1925#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 1926 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 1927 array_verify (EV_A_ (W *)prepares, preparecnt);
1928#endif
1703 1929
1930#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 1931 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 1932 array_verify (EV_A_ (W *)checks, checkcnt);
1933#endif
1706 1934
1707# if 0 1935# if 0
1936#if EV_CHILD_ENABLE
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1937 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1938 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1710# endif 1939#endif
1711#endif 1940# endif
1941#endif
1712} 1942}
1713 1943#endif
1714#endif /* multiplicity */
1715 1944
1716#if EV_MULTIPLICITY 1945#if EV_MULTIPLICITY
1717struct ev_loop * 1946struct ev_loop *
1718ev_default_loop_init (unsigned int flags) 1947ev_default_loop_init (unsigned int flags)
1719#else 1948#else
1722#endif 1951#endif
1723{ 1952{
1724 if (!ev_default_loop_ptr) 1953 if (!ev_default_loop_ptr)
1725 { 1954 {
1726#if EV_MULTIPLICITY 1955#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1956 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 1957#else
1729 ev_default_loop_ptr = 1; 1958 ev_default_loop_ptr = 1;
1730#endif 1959#endif
1731 1960
1732 loop_init (EV_A_ flags); 1961 loop_init (EV_A_ flags);
1733 1962
1734 if (ev_backend (EV_A)) 1963 if (ev_backend (EV_A))
1735 { 1964 {
1736#ifndef _WIN32 1965#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 1966 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 1967 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 1968 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1969 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 1970#endif
1749 1978
1750void 1979void
1751ev_default_destroy (void) 1980ev_default_destroy (void)
1752{ 1981{
1753#if EV_MULTIPLICITY 1982#if EV_MULTIPLICITY
1754 struct ev_loop *loop = ev_default_loop_ptr; 1983 EV_P = ev_default_loop_ptr;
1755#endif 1984#endif
1756 1985
1757 ev_default_loop_ptr = 0; 1986 ev_default_loop_ptr = 0;
1758 1987
1759#ifndef _WIN32 1988#if EV_CHILD_ENABLE
1760 ev_ref (EV_A); /* child watcher */ 1989 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev); 1990 ev_signal_stop (EV_A_ &childev);
1762#endif 1991#endif
1763 1992
1764 loop_destroy (EV_A); 1993 loop_destroy (EV_A);
1766 1995
1767void 1996void
1768ev_default_fork (void) 1997ev_default_fork (void)
1769{ 1998{
1770#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr; 2000 EV_P = ev_default_loop_ptr;
1772#endif 2001#endif
1773 2002
1774 postfork = 1; /* must be in line with ev_loop_fork */ 2003 postfork = 1; /* must be in line with ev_loop_fork */
1775} 2004}
1776 2005
1780ev_invoke (EV_P_ void *w, int revents) 2009ev_invoke (EV_P_ void *w, int revents)
1781{ 2010{
1782 EV_CB_INVOKE ((W)w, revents); 2011 EV_CB_INVOKE ((W)w, revents);
1783} 2012}
1784 2013
1785inline_speed void 2014unsigned int
1786call_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)
1787{ 2028{
1788 int pri; 2029 int pri;
1789 2030
1790 for (pri = NUMPRI; pri--; ) 2031 for (pri = NUMPRI; pri--; )
1791 while (pendingcnt [pri]) 2032 while (pendingcnt [pri])
1858 EV_FREQUENT_CHECK; 2099 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 2100 feed_reverse (EV_A_ (W)w);
1860 } 2101 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2102 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 2103
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 2104 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 2105 }
1865} 2106}
1866 2107
1867#if EV_PERIODIC_ENABLE 2108#if EV_PERIODIC_ENABLE
1868/* make periodics pending */ 2109/* make periodics pending */
1959 ANHE_at_cache (*he); 2200 ANHE_at_cache (*he);
1960 } 2201 }
1961} 2202}
1962 2203
1963/* fetch new monotonic and realtime times from the kernel */ 2204/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 2205/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 2206inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 2207time_update (EV_P_ ev_tstamp max_block)
1967{ 2208{
1968#if EV_USE_MONOTONIC 2209#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 2210 if (expect_true (have_monotonic))
2029} 2270}
2030 2271
2031void 2272void
2032ev_loop (EV_P_ int flags) 2273ev_loop (EV_P_ int flags)
2033{ 2274{
2275#if EV_FEATURE_API
2034 ++loop_depth; 2276 ++loop_depth;
2277#endif
2278
2279 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2035 2280
2036 loop_done = EVUNLOOP_CANCEL; 2281 loop_done = EVUNLOOP_CANCEL;
2037 2282
2038 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 */
2039 2284
2040 do 2285 do
2041 { 2286 {
2042#if EV_VERIFY >= 2 2287#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 2288 ev_verify (EV_A);
2044#endif 2289#endif
2045 2290
2046#ifndef _WIN32 2291#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 2292 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 2293 if (expect_false (getpid () != curpid))
2056 /* we might have forked, so queue fork handlers */ 2301 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 2302 if (expect_false (postfork))
2058 if (forkcnt) 2303 if (forkcnt)
2059 { 2304 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2305 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 2306 EV_INVOKE_PENDING;
2062 } 2307 }
2063#endif 2308#endif
2064 2309
2310#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 2311 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 2312 if (expect_false (preparecnt))
2067 { 2313 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2314 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 2315 EV_INVOKE_PENDING;
2070 } 2316 }
2317#endif
2318
2319 if (expect_false (loop_done))
2320 break;
2071 2321
2072 /* we might have forked, so reify kernel state if necessary */ 2322 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 2323 if (expect_false (postfork))
2074 loop_fork (EV_A); 2324 loop_fork (EV_A);
2075 2325
2123 waittime -= sleeptime; 2373 waittime -= sleeptime;
2124 } 2374 }
2125 } 2375 }
2126 } 2376 }
2127 2377
2378#if EV_FEATURE_API
2128 ++loop_count; 2379 ++loop_count;
2380#endif
2381 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2129 backend_poll (EV_A_ waittime); 2382 backend_poll (EV_A_ waittime);
2383 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2130 2384
2131 /* update ev_rt_now, do magic */ 2385 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 2386 time_update (EV_A_ waittime + sleeptime);
2133 } 2387 }
2134 2388
2141#if EV_IDLE_ENABLE 2395#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 2396 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 2397 idle_reify (EV_A);
2144#endif 2398#endif
2145 2399
2400#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 2401 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 2402 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2403 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2404#endif
2149 2405
2150 call_pending (EV_A); 2406 EV_INVOKE_PENDING;
2151 } 2407 }
2152 while (expect_true ( 2408 while (expect_true (
2153 activecnt 2409 activecnt
2154 && !loop_done 2410 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2411 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2156 )); 2412 ));
2157 2413
2158 if (loop_done == EVUNLOOP_ONE) 2414 if (loop_done == EVUNLOOP_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 2415 loop_done = EVUNLOOP_CANCEL;
2160 2416
2417#if EV_FEATURE_API
2161 --loop_depth; 2418 --loop_depth;
2419#endif
2162} 2420}
2163 2421
2164void 2422void
2165ev_unloop (EV_P_ int how) 2423ev_unloop (EV_P_ int how)
2166{ 2424{
2217inline_size void 2475inline_size void
2218wlist_del (WL *head, WL elem) 2476wlist_del (WL *head, WL elem)
2219{ 2477{
2220 while (*head) 2478 while (*head)
2221 { 2479 {
2222 if (*head == elem) 2480 if (expect_true (*head == elem))
2223 { 2481 {
2224 *head = elem->next; 2482 *head = elem->next;
2225 return; 2483 break;
2226 } 2484 }
2227 2485
2228 head = &(*head)->next; 2486 head = &(*head)->next;
2229 } 2487 }
2230} 2488}
2258} 2516}
2259 2517
2260inline_size void 2518inline_size void
2261pri_adjust (EV_P_ W w) 2519pri_adjust (EV_P_ W w)
2262{ 2520{
2263 int pri = w->priority; 2521 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2522 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2523 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 2524 ev_set_priority (w, pri);
2267} 2525}
2268 2526
2269inline_speed void 2527inline_speed void
2270ev_start (EV_P_ W w, int active) 2528ev_start (EV_P_ W w, int active)
2271{ 2529{
2290 2548
2291 if (expect_false (ev_is_active (w))) 2549 if (expect_false (ev_is_active (w)))
2292 return; 2550 return;
2293 2551
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2552 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2553 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296 2554
2297 EV_FREQUENT_CHECK; 2555 EV_FREQUENT_CHECK;
2298 2556
2299 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2558 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2301 wlist_add (&anfds[fd].head, (WL)w); 2559 wlist_add (&anfds[fd].head, (WL)w);
2302 2560
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2561 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 2562 w->events &= ~EV__IOFDSET;
2305 2563
2306 EV_FREQUENT_CHECK; 2564 EV_FREQUENT_CHECK;
2307} 2565}
2308 2566
2370 timers [active] = timers [timercnt + HEAP0]; 2628 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 2629 adjustheap (timers, timercnt, active);
2372 } 2630 }
2373 } 2631 }
2374 2632
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 2633 ev_at (w) -= mn_now;
2378 2634
2379 ev_stop (EV_A_ (W)w); 2635 ev_stop (EV_A_ (W)w);
2636
2637 EV_FREQUENT_CHECK;
2380} 2638}
2381 2639
2382void noinline 2640void noinline
2383ev_timer_again (EV_P_ ev_timer *w) 2641ev_timer_again (EV_P_ ev_timer *w)
2384{ 2642{
2402 } 2660 }
2403 2661
2404 EV_FREQUENT_CHECK; 2662 EV_FREQUENT_CHECK;
2405} 2663}
2406 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
2407#if EV_PERIODIC_ENABLE 2671#if EV_PERIODIC_ENABLE
2408void noinline 2672void noinline
2409ev_periodic_start (EV_P_ ev_periodic *w) 2673ev_periodic_start (EV_P_ ev_periodic *w)
2410{ 2674{
2411 if (expect_false (ev_is_active (w))) 2675 if (expect_false (ev_is_active (w)))
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 2721 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 2722 adjustheap (periodics, periodiccnt, active);
2459 } 2723 }
2460 } 2724 }
2461 2725
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 2726 ev_stop (EV_A_ (W)w);
2727
2728 EV_FREQUENT_CHECK;
2465} 2729}
2466 2730
2467void noinline 2731void noinline
2468ev_periodic_again (EV_P_ ev_periodic *w) 2732ev_periodic_again (EV_P_ ev_periodic *w)
2469{ 2733{
2475 2739
2476#ifndef SA_RESTART 2740#ifndef SA_RESTART
2477# define SA_RESTART 0 2741# define SA_RESTART 0
2478#endif 2742#endif
2479 2743
2744#if EV_SIGNAL_ENABLE
2745
2480void noinline 2746void noinline
2481ev_signal_start (EV_P_ ev_signal *w) 2747ev_signal_start (EV_P_ ev_signal *w)
2482{ 2748{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 2749 if (expect_false (ev_is_active (w)))
2487 return; 2750 return;
2488 2751
2489 assert (("libev: 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));
2490 2753
2491 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));
2492 2757
2493 EV_FREQUENT_CHECK; 2758 signals [w->signum - 1].loop = EV_A;
2759#endif
2494 2760
2761 EV_FREQUENT_CHECK;
2762
2763#if EV_USE_SIGNALFD
2764 if (sigfd == -2)
2495 { 2765 {
2496#ifndef _WIN32 2766 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 2767 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 2768 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 2769
2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2770 if (sigfd >= 0)
2771 {
2772 fd_intern (sigfd); /* doing it twice will not hurt */
2503 2773
2504#ifndef _WIN32 2774 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 2775
2506#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 }
2507 } 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
2508 2792
2509 ev_start (EV_A_ (W)w, 1); 2793 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 2794 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 2795
2512 if (!((WL)w)->next) 2796 if (!((WL)w)->next)
2797# if EV_USE_SIGNALFD
2798 if (sigfd < 0) /*TODO*/
2799# endif
2513 { 2800 {
2514#if _WIN32 2801# ifdef _WIN32
2802 evpipe_init (EV_A);
2803
2515 signal (w->signum, ev_sighandler); 2804 signal (w->signum, ev_sighandler);
2516#else 2805# else
2517 struct sigaction sa; 2806 struct sigaction sa;
2807
2808 evpipe_init (EV_A);
2809
2518 sa.sa_handler = ev_sighandler; 2810 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 2811 sigfillset (&sa.sa_mask);
2520 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 */
2521 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);
2522#endif 2818#endif
2523 } 2819 }
2524 2820
2525 EV_FREQUENT_CHECK; 2821 EV_FREQUENT_CHECK;
2526} 2822}
2527 2823
2528void noinline 2824void noinline
2536 2832
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 2833 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 2834 ev_stop (EV_A_ (W)w);
2539 2835
2540 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
2541 signal (w->signum, SIG_DFL); 2855 signal (w->signum, SIG_DFL);
2856 }
2542 2857
2543 EV_FREQUENT_CHECK; 2858 EV_FREQUENT_CHECK;
2544} 2859}
2860
2861#endif
2862
2863#if EV_CHILD_ENABLE
2545 2864
2546void 2865void
2547ev_child_start (EV_P_ ev_child *w) 2866ev_child_start (EV_P_ ev_child *w)
2548{ 2867{
2549#if EV_MULTIPLICITY 2868#if EV_MULTIPLICITY
2553 return; 2872 return;
2554 2873
2555 EV_FREQUENT_CHECK; 2874 EV_FREQUENT_CHECK;
2556 2875
2557 ev_start (EV_A_ (W)w, 1); 2876 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2877 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 2878
2560 EV_FREQUENT_CHECK; 2879 EV_FREQUENT_CHECK;
2561} 2880}
2562 2881
2563void 2882void
2567 if (expect_false (!ev_is_active (w))) 2886 if (expect_false (!ev_is_active (w)))
2568 return; 2887 return;
2569 2888
2570 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2571 2890
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2891 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 2892 ev_stop (EV_A_ (W)w);
2574 2893
2575 EV_FREQUENT_CHECK; 2894 EV_FREQUENT_CHECK;
2576} 2895}
2896
2897#endif
2577 2898
2578#if EV_STAT_ENABLE 2899#if EV_STAT_ENABLE
2579 2900
2580# ifdef _WIN32 2901# ifdef _WIN32
2581# undef lstat 2902# undef lstat
2587#define MIN_STAT_INTERVAL 0.1074891 2908#define MIN_STAT_INTERVAL 0.1074891
2588 2909
2589static 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);
2590 2911
2591#if EV_USE_INOTIFY 2912#if EV_USE_INOTIFY
2592# 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)
2593 2916
2594static void noinline 2917static void noinline
2595infy_add (EV_P_ ev_stat *w) 2918infy_add (EV_P_ ev_stat *w)
2596{ 2919{
2597 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);
2598 2921
2599 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 */
2600 { 2942 }
2943 else
2944 {
2945 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2946 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 2947
2604 /* monitor some parent directory for speedup hints */ 2948 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2949 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */ 2950 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2951 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 2952 {
2609 char path [4096]; 2953 char path [4096];
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 2970 }
2627 } 2971 }
2628 2972
2629 if (w->wd >= 0) 2973 if (w->wd >= 0)
2630 {
2631 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);
2632 2975
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 2976 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 2977 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 2978 ev_timer_again (EV_A_ &w->timer);
2649 } 2979 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 2980}
2651 2981
2652static void noinline 2982static void noinline
2653infy_del (EV_P_ ev_stat *w) 2983infy_del (EV_P_ ev_stat *w)
2654{ 2984{
2657 2987
2658 if (wd < 0) 2988 if (wd < 0)
2659 return; 2989 return;
2660 2990
2661 w->wd = -2; 2991 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 2992 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 2993 wlist_del (&fs_hash [slot].head, (WL)w);
2664 2994
2665 /* remove this watcher, if others are watching it, they will rearm */ 2995 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 2996 inotify_rm_watch (fs_fd, wd);
2667} 2997}
2669static void noinline 2999static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3000infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 3001{
2672 if (slot < 0) 3002 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 3003 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3004 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 3005 infy_wd (EV_A_ slot, wd, ev);
2676 else 3006 else
2677 { 3007 {
2678 WL w_; 3008 WL w_;
2679 3009
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3010 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 3011 {
2682 ev_stat *w = (ev_stat *)w_; 3012 ev_stat *w = (ev_stat *)w_;
2683 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 */
2684 3014
2685 if (w->wd == wd || wd == -1) 3015 if (w->wd == wd || wd == -1)
2686 { 3016 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3017 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 3018 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3019 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2690 w->wd = -1; 3020 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 3021 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 3022 }
2693 3023
2694 stat_timer_cb (EV_A_ &w->timer, 0); 3024 stat_timer_cb (EV_A_ &w->timer, 0);
2699 3029
2700static void 3030static void
2701infy_cb (EV_P_ ev_io *w, int revents) 3031infy_cb (EV_P_ ev_io *w, int revents)
2702{ 3032{
2703 char buf [EV_INOTIFY_BUFSIZE]; 3033 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 3034 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 3035 int len = read (fs_fd, buf, sizeof (buf));
2707 3036
2708 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);
2709 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 }
3043}
3044
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;
2710} 3075}
2711 3076
2712inline_size void 3077inline_size void
2713check_2625 (EV_P) 3078ev_check_2625 (EV_P)
2714{ 3079{
2715 /* kernels < 2.6.25 are borked 3080 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3081 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */ 3082 */
2718 struct utsname buf; 3083 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 3084 return;
2723 3085
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1; 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 ();
2733} 3098}
2734 3099
2735inline_size void 3100inline_size void
2736infy_init (EV_P) 3101infy_init (EV_P)
2737{ 3102{
2738 if (fs_fd != -2) 3103 if (fs_fd != -2)
2739 return; 3104 return;
2740 3105
2741 fs_fd = -1; 3106 fs_fd = -1;
2742 3107
2743 check_2625 (EV_A); 3108 ev_check_2625 (EV_A);
2744 3109
2745 fs_fd = inotify_init (); 3110 fs_fd = infy_newfd ();
2746 3111
2747 if (fs_fd >= 0) 3112 if (fs_fd >= 0)
2748 { 3113 {
3114 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3115 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 3116 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 3117 ev_io_start (EV_A_ &fs_w);
3118 ev_unref (EV_A);
2752 } 3119 }
2753} 3120}
2754 3121
2755inline_size void 3122inline_size void
2756infy_fork (EV_P) 3123infy_fork (EV_P)
2758 int slot; 3125 int slot;
2759 3126
2760 if (fs_fd < 0) 3127 if (fs_fd < 0)
2761 return; 3128 return;
2762 3129
3130 ev_ref (EV_A);
3131 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 3132 close (fs_fd);
2764 fs_fd = inotify_init (); 3133 fs_fd = infy_newfd ();
2765 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
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3143 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 3144 {
2768 WL w_ = fs_hash [slot].head; 3145 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 3146 fs_hash [slot].head = 0;
2770 3147
2771 while (w_) 3148 while (w_)
2776 w->wd = -1; 3153 w->wd = -1;
2777 3154
2778 if (fs_fd >= 0) 3155 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 3156 infy_add (EV_A_ w); /* re-add, no matter what */
2780 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);
2781 ev_timer_again (EV_A_ &w->timer); 3161 ev_timer_again (EV_A_ &w->timer);
3162 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3163 }
2782 } 3164 }
2783 } 3165 }
2784} 3166}
2785 3167
2786#endif 3168#endif
2803static void noinline 3185static void noinline
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3186stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 3187{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3188 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 3189
2808 /* we copy this here each the time so that */ 3190 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 3191 ev_stat_stat (EV_A_ w);
2812 3192
2813 /* 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 */
2814 if ( 3194 if (
2815 w->prev.st_dev != w->attr.st_dev 3195 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 3196 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 3197 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 3198 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 3199 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 3200 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 3201 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 3202 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 3203 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 3204 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 3205 || prev.st_ctime != w->attr.st_ctime
2826 ) { 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
2827 #if EV_USE_INOTIFY 3212 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 3213 if (fs_fd >= 0)
2829 { 3214 {
2830 infy_del (EV_A_ w); 3215 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 3216 infy_add (EV_A_ w);
2856 3241
2857 if (fs_fd >= 0) 3242 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 3243 infy_add (EV_A_ w);
2859 else 3244 else
2860#endif 3245#endif
3246 {
2861 ev_timer_again (EV_A_ &w->timer); 3247 ev_timer_again (EV_A_ &w->timer);
3248 ev_unref (EV_A);
3249 }
2862 3250
2863 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2864 3252
2865 EV_FREQUENT_CHECK; 3253 EV_FREQUENT_CHECK;
2866} 3254}
2875 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2876 3264
2877#if EV_USE_INOTIFY 3265#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 3266 infy_del (EV_A_ w);
2879#endif 3267#endif
3268
3269 if (ev_is_active (&w->timer))
3270 {
3271 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 3272 ev_timer_stop (EV_A_ &w->timer);
3273 }
2881 3274
2882 ev_stop (EV_A_ (W)w); 3275 ev_stop (EV_A_ (W)w);
2883 3276
2884 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2885} 3278}
2930 3323
2931 EV_FREQUENT_CHECK; 3324 EV_FREQUENT_CHECK;
2932} 3325}
2933#endif 3326#endif
2934 3327
3328#if EV_PREPARE_ENABLE
2935void 3329void
2936ev_prepare_start (EV_P_ ev_prepare *w) 3330ev_prepare_start (EV_P_ ev_prepare *w)
2937{ 3331{
2938 if (expect_false (ev_is_active (w))) 3332 if (expect_false (ev_is_active (w)))
2939 return; 3333 return;
2965 3359
2966 ev_stop (EV_A_ (W)w); 3360 ev_stop (EV_A_ (W)w);
2967 3361
2968 EV_FREQUENT_CHECK; 3362 EV_FREQUENT_CHECK;
2969} 3363}
3364#endif
2970 3365
3366#if EV_CHECK_ENABLE
2971void 3367void
2972ev_check_start (EV_P_ ev_check *w) 3368ev_check_start (EV_P_ ev_check *w)
2973{ 3369{
2974 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
2975 return; 3371 return;
3001 3397
3002 ev_stop (EV_A_ (W)w); 3398 ev_stop (EV_A_ (W)w);
3003 3399
3004 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
3005} 3401}
3402#endif
3006 3403
3007#if EV_EMBED_ENABLE 3404#if EV_EMBED_ENABLE
3008void noinline 3405void noinline
3009ev_embed_sweep (EV_P_ ev_embed *w) 3406ev_embed_sweep (EV_P_ ev_embed *w)
3010{ 3407{
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 3424{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 3426
3030 { 3427 {
3031 struct ev_loop *loop = w->other; 3428 EV_P = w->other;
3032 3429
3033 while (fdchangecnt) 3430 while (fdchangecnt)
3034 { 3431 {
3035 fd_reify (EV_A); 3432 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3433 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3441 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045 3442
3046 ev_embed_stop (EV_A_ w); 3443 ev_embed_stop (EV_A_ w);
3047 3444
3048 { 3445 {
3049 struct ev_loop *loop = w->other; 3446 EV_P = w->other;
3050 3447
3051 ev_loop_fork (EV_A); 3448 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3449 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3053 } 3450 }
3054 3451
3068{ 3465{
3069 if (expect_false (ev_is_active (w))) 3466 if (expect_false (ev_is_active (w)))
3070 return; 3467 return;
3071 3468
3072 { 3469 {
3073 struct ev_loop *loop = w->other; 3470 EV_P = w->other;
3074 assert (("libev: 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 ()));
3075 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);
3076 } 3473 }
3077 3474
3078 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
3105 3502
3106 ev_io_stop (EV_A_ &w->io); 3503 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 3504 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 3505 ev_fork_stop (EV_A_ &w->fork);
3109 3506
3507 ev_stop (EV_A_ (W)w);
3508
3110 EV_FREQUENT_CHECK; 3509 EV_FREQUENT_CHECK;
3111} 3510}
3112#endif 3511#endif
3113 3512
3114#if EV_FORK_ENABLE 3513#if EV_FORK_ENABLE
3190 3589
3191void 3590void
3192ev_async_send (EV_P_ ev_async *w) 3591ev_async_send (EV_P_ ev_async *w)
3193{ 3592{
3194 w->sent = 1; 3593 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 3594 evpipe_write (EV_A_ &async_pending);
3196} 3595}
3197#endif 3596#endif
3198 3597
3199/*****************************************************************************/ 3598/*****************************************************************************/
3200 3599
3240{ 3639{
3241 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));
3242 3641
3243 if (expect_false (!once)) 3642 if (expect_false (!once))
3244 { 3643 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3644 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3246 return; 3645 return;
3247 } 3646 }
3248 3647
3249 once->cb = cb; 3648 once->cb = cb;
3250 once->arg = arg; 3649 once->arg = arg;
3337 if (types & EV_ASYNC) 3736 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 3737 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 3738 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 3739#endif
3341 3740
3741#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 3742 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 3743 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 3744# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 3745 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 3746# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 3747 cb (EV_A_ EV_PREPARE, prepares [i]);
3748#endif
3348 3749
3750#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 3751 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 3752 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 3753 cb (EV_A_ EV_CHECK, checks [i]);
3754#endif
3352 3755
3756#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 3757 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 3758 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 3759 for (wl = signals [i].head; wl; )
3356 { 3760 {
3357 wn = wl->next; 3761 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 3762 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 3763 wl = wn;
3360 } 3764 }
3765#endif
3361 3766
3767#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 3768 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 3769 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 3770 for (wl = childs [i]; wl; )
3365 { 3771 {
3366 wn = wl->next; 3772 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 3773 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 3774 wl = wn;
3369 } 3775 }
3776#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 3777/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3778/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 3779}
3373#endif 3780#endif
3374 3781

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