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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 1.338 by root, Tue Mar 16 00:20:17 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
… …
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 1
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# endif
… …
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 1
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 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
… …
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
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
300 436
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_loop_verify (EV_A)
… …
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 */
1259#endif 1511#endif
1260 1512
1261 return flags; 1513 return flags;
1262} 1514}
1263 1515
… …
1277ev_backend (EV_P) 1529ev_backend (EV_P)
1278{ 1530{
1279 return backend; 1531 return backend;
1280} 1532}
1281 1533
1534#if EV_FEATURE_API
1282unsigned int 1535unsigned int
1283ev_loop_count (EV_P) 1536ev_loop_count (EV_P)
1284{ 1537{
1285 return loop_count; 1538 return loop_count;
1286} 1539}
1287 1540
1541unsigned int
1542ev_loop_depth (EV_P)
1543{
1544 return loop_depth;
1545}
1546
1288void 1547void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1548ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1549{
1291 io_blocktime = interval; 1550 io_blocktime = interval;
1292} 1551}
… …
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1554ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{ 1555{
1297 timeout_blocktime = interval; 1556 timeout_blocktime = interval;
1298} 1557}
1299 1558
1559void
1560ev_set_userdata (EV_P_ void *data)
1561{
1562 userdata = data;
1563}
1564
1565void *
1566ev_userdata (EV_P)
1567{
1568 return userdata;
1569}
1570
1571void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1572{
1573 invoke_cb = invoke_pending_cb;
1574}
1575
1576void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1577{
1578 release_cb = release;
1579 acquire_cb = acquire;
1580}
1581#endif
1582
1583/* initialise a loop structure, must be zero-initialised */
1300static void noinline 1584static void noinline
1301loop_init (EV_P_ unsigned int flags) 1585loop_init (EV_P_ unsigned int flags)
1302{ 1586{
1303 if (!backend) 1587 if (!backend)
1304 { 1588 {
1589#if EV_USE_REALTIME
1590 if (!have_realtime)
1591 {
1592 struct timespec ts;
1593
1594 if (!clock_gettime (CLOCK_REALTIME, &ts))
1595 have_realtime = 1;
1596 }
1597#endif
1598
1305#if EV_USE_MONOTONIC 1599#if EV_USE_MONOTONIC
1600 if (!have_monotonic)
1306 { 1601 {
1307 struct timespec ts; 1602 struct timespec ts;
1603
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1604 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 1605 have_monotonic = 1;
1310 } 1606 }
1311#endif 1607#endif
1608
1609 /* pid check not overridable via env */
1610#ifndef _WIN32
1611 if (flags & EVFLAG_FORKCHECK)
1612 curpid = getpid ();
1613#endif
1614
1615 if (!(flags & EVFLAG_NOENV)
1616 && !enable_secure ()
1617 && getenv ("LIBEV_FLAGS"))
1618 flags = atoi (getenv ("LIBEV_FLAGS"));
1312 1619
1313 ev_rt_now = ev_time (); 1620 ev_rt_now = ev_time ();
1314 mn_now = get_clock (); 1621 mn_now = get_clock ();
1315 now_floor = mn_now; 1622 now_floor = mn_now;
1316 rtmn_diff = ev_rt_now - mn_now; 1623 rtmn_diff = ev_rt_now - mn_now;
1624#if EV_FEATURE_API
1625 invoke_cb = ev_invoke_pending;
1626#endif
1317 1627
1318 io_blocktime = 0.; 1628 io_blocktime = 0.;
1319 timeout_blocktime = 0.; 1629 timeout_blocktime = 0.;
1320 backend = 0; 1630 backend = 0;
1321 backend_fd = -1; 1631 backend_fd = -1;
1322 gotasync = 0; 1632 sig_pending = 0;
1633#if EV_ASYNC_ENABLE
1634 async_pending = 0;
1635#endif
1323#if EV_USE_INOTIFY 1636#if EV_USE_INOTIFY
1324 fs_fd = -2; 1637 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1325#endif 1638#endif
1326 1639#if EV_USE_SIGNALFD
1327 /* pid check not overridable via env */ 1640 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1328#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK)
1330 curpid = getpid ();
1331#endif 1641#endif
1332
1333 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 1642
1338 if (!(flags & 0x0000ffffU)) 1643 if (!(flags & 0x0000ffffU))
1339 flags |= ev_recommended_backends (); 1644 flags |= ev_recommended_backends ();
1340 1645
1341#if EV_USE_PORT 1646#if EV_USE_PORT
… …
1352#endif 1657#endif
1353#if EV_USE_SELECT 1658#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1659 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 1660#endif
1356 1661
1662 ev_prepare_init (&pending_w, pendingcb);
1663
1664#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 1665 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 1666 ev_set_priority (&pipe_w, EV_MAXPRI);
1667#endif
1359 } 1668 }
1360} 1669}
1361 1670
1671/* free up a loop structure */
1362static void noinline 1672static void noinline
1363loop_destroy (EV_P) 1673loop_destroy (EV_P)
1364{ 1674{
1365 int i; 1675 int i;
1366 1676
1367 if (ev_is_active (&pipeev)) 1677 if (ev_is_active (&pipe_w))
1368 { 1678 {
1369 ev_ref (EV_A); /* signal watcher */ 1679 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 1680 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 1681
1372#if EV_USE_EVENTFD 1682#if EV_USE_EVENTFD
1373 if (evfd >= 0) 1683 if (evfd >= 0)
1374 close (evfd); 1684 close (evfd);
1375#endif 1685#endif
1376 1686
1377 if (evpipe [0] >= 0) 1687 if (evpipe [0] >= 0)
1378 { 1688 {
1379 close (evpipe [0]); 1689 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 1690 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 1691 }
1382 } 1692 }
1693
1694#if EV_USE_SIGNALFD
1695 if (ev_is_active (&sigfd_w))
1696 close (sigfd);
1697#endif
1383 1698
1384#if EV_USE_INOTIFY 1699#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 1700 if (fs_fd >= 0)
1386 close (fs_fd); 1701 close (fs_fd);
1387#endif 1702#endif
… …
1411#if EV_IDLE_ENABLE 1726#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 1727 array_free (idle, [i]);
1413#endif 1728#endif
1414 } 1729 }
1415 1730
1416 ev_free (anfds); anfdmax = 0; 1731 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 1732
1418 /* have to use the microsoft-never-gets-it-right macro */ 1733 /* have to use the microsoft-never-gets-it-right macro */
1734 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 1735 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 1736 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 1737#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 1738 array_free (periodic, EMPTY);
1423#endif 1739#endif
… …
1432 1748
1433 backend = 0; 1749 backend = 0;
1434} 1750}
1435 1751
1436#if EV_USE_INOTIFY 1752#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 1753inline_size void infy_fork (EV_P);
1438#endif 1754#endif
1439 1755
1440void inline_size 1756inline_size void
1441loop_fork (EV_P) 1757loop_fork (EV_P)
1442{ 1758{
1443#if EV_USE_PORT 1759#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1760 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 1761#endif
… …
1451#endif 1767#endif
1452#if EV_USE_INOTIFY 1768#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 1769 infy_fork (EV_A);
1454#endif 1770#endif
1455 1771
1456 if (ev_is_active (&pipeev)) 1772 if (ev_is_active (&pipe_w))
1457 { 1773 {
1458 /* this "locks" the handlers against writing to the pipe */ 1774 /* this "locks" the handlers against writing to the pipe */
1459 /* while we modify the fd vars */ 1775 /* while we modify the fd vars */
1460 gotsig = 1; 1776 sig_pending = 1;
1461#if EV_ASYNC_ENABLE 1777#if EV_ASYNC_ENABLE
1462 gotasync = 1; 1778 async_pending = 1;
1463#endif 1779#endif
1464 1780
1465 ev_ref (EV_A); 1781 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 1782 ev_io_stop (EV_A_ &pipe_w);
1467 1783
1468#if EV_USE_EVENTFD 1784#if EV_USE_EVENTFD
1469 if (evfd >= 0) 1785 if (evfd >= 0)
1470 close (evfd); 1786 close (evfd);
1471#endif 1787#endif
1472 1788
1473 if (evpipe [0] >= 0) 1789 if (evpipe [0] >= 0)
1474 { 1790 {
1475 close (evpipe [0]); 1791 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 1792 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 1793 }
1478 1794
1795#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 1796 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 1797 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 1798 pipecb (EV_A_ &pipe_w, EV_READ);
1799#endif
1482 } 1800 }
1483 1801
1484 postfork = 0; 1802 postfork = 0;
1485} 1803}
1486 1804
1487#if EV_MULTIPLICITY 1805#if EV_MULTIPLICITY
1488 1806
1489struct ev_loop * 1807struct ev_loop *
1490ev_loop_new (unsigned int flags) 1808ev_loop_new (unsigned int flags)
1491{ 1809{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1810 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 1811
1494 memset (loop, 0, sizeof (struct ev_loop)); 1812 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 1813 loop_init (EV_A_ flags);
1497 1814
1498 if (ev_backend (EV_A)) 1815 if (ev_backend (EV_A))
1499 return loop; 1816 return EV_A;
1500 1817
1501 return 0; 1818 return 0;
1502} 1819}
1503 1820
1504void 1821void
… …
1511void 1828void
1512ev_loop_fork (EV_P) 1829ev_loop_fork (EV_P)
1513{ 1830{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1831 postfork = 1; /* must be in line with ev_default_fork */
1515} 1832}
1833#endif /* multiplicity */
1516 1834
1517#if EV_VERIFY 1835#if EV_VERIFY
1518static void 1836static void noinline
1837verify_watcher (EV_P_ W w)
1838{
1839 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1840
1841 if (w->pending)
1842 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1843}
1844
1845static void noinline
1846verify_heap (EV_P_ ANHE *heap, int N)
1847{
1848 int i;
1849
1850 for (i = HEAP0; i < N + HEAP0; ++i)
1851 {
1852 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1853 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1854 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1855
1856 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1857 }
1858}
1859
1860static void noinline
1519array_check (W **ws, int cnt) 1861array_verify (EV_P_ W *ws, int cnt)
1520{ 1862{
1521 while (cnt--) 1863 while (cnt--)
1864 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1865 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1866 verify_watcher (EV_A_ ws [cnt]);
1867 }
1523} 1868}
1524#endif 1869#endif
1525 1870
1871#if EV_FEATURE_API
1526void 1872void
1527ev_loop_verify (EV_P) 1873ev_loop_verify (EV_P)
1528{ 1874{
1529#if EV_VERIFY 1875#if EV_VERIFY
1530 int i; 1876 int i;
1877 WL w;
1531 1878
1879 assert (activecnt >= -1);
1880
1881 assert (fdchangemax >= fdchangecnt);
1882 for (i = 0; i < fdchangecnt; ++i)
1883 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1884
1885 assert (anfdmax >= 0);
1886 for (i = 0; i < anfdmax; ++i)
1887 for (w = anfds [i].head; w; w = w->next)
1888 {
1889 verify_watcher (EV_A_ (W)w);
1890 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1891 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1892 }
1893
1894 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 1895 verify_heap (EV_A_ timers, timercnt);
1896
1533#if EV_PERIODIC_ENABLE 1897#if EV_PERIODIC_ENABLE
1898 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 1899 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 1900#endif
1536 1901
1902 for (i = NUMPRI; i--; )
1903 {
1904 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 1905#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 1906 assert (idleall >= 0);
1907 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 1908 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 1909#endif
1910 }
1911
1541#if EV_FORK_ENABLE 1912#if EV_FORK_ENABLE
1913 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 1914 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 1915#endif
1916
1544#if EV_ASYNC_ENABLE 1917#if EV_ASYNC_ENABLE
1918 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1919 array_verify (EV_A_ (W *)asyncs, asynccnt);
1920#endif
1921
1922#if EV_PREPARE_ENABLE
1923 assert (preparemax >= preparecnt);
1924 array_verify (EV_A_ (W *)prepares, preparecnt);
1925#endif
1926
1927#if EV_CHECK_ENABLE
1928 assert (checkmax >= checkcnt);
1929 array_verify (EV_A_ (W *)checks, checkcnt);
1930#endif
1931
1932# if 0
1933#if EV_CHILD_ENABLE
1934 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1935 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1936#endif
1546#endif 1937# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 1938#endif
1550} 1939}
1551 1940#endif
1552#endif /* multiplicity */
1553 1941
1554#if EV_MULTIPLICITY 1942#if EV_MULTIPLICITY
1555struct ev_loop * 1943struct ev_loop *
1556ev_default_loop_init (unsigned int flags) 1944ev_default_loop_init (unsigned int flags)
1557#else 1945#else
… …
1560#endif 1948#endif
1561{ 1949{
1562 if (!ev_default_loop_ptr) 1950 if (!ev_default_loop_ptr)
1563 { 1951 {
1564#if EV_MULTIPLICITY 1952#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1953 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 1954#else
1567 ev_default_loop_ptr = 1; 1955 ev_default_loop_ptr = 1;
1568#endif 1956#endif
1569 1957
1570 loop_init (EV_A_ flags); 1958 loop_init (EV_A_ flags);
1571 1959
1572 if (ev_backend (EV_A)) 1960 if (ev_backend (EV_A))
1573 { 1961 {
1574#ifndef _WIN32 1962#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 1963 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 1964 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 1965 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1966 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 1967#endif
… …
1587 1975
1588void 1976void
1589ev_default_destroy (void) 1977ev_default_destroy (void)
1590{ 1978{
1591#if EV_MULTIPLICITY 1979#if EV_MULTIPLICITY
1592 struct ev_loop *loop = ev_default_loop_ptr; 1980 EV_P = ev_default_loop_ptr;
1593#endif 1981#endif
1594 1982
1595#ifndef _WIN32 1983 ev_default_loop_ptr = 0;
1984
1985#if EV_CHILD_ENABLE
1596 ev_ref (EV_A); /* child watcher */ 1986 ev_ref (EV_A); /* child watcher */
1597 ev_signal_stop (EV_A_ &childev); 1987 ev_signal_stop (EV_A_ &childev);
1598#endif 1988#endif
1599 1989
1600 loop_destroy (EV_A); 1990 loop_destroy (EV_A);
… …
1602 1992
1603void 1993void
1604ev_default_fork (void) 1994ev_default_fork (void)
1605{ 1995{
1606#if EV_MULTIPLICITY 1996#if EV_MULTIPLICITY
1607 struct ev_loop *loop = ev_default_loop_ptr; 1997 EV_P = ev_default_loop_ptr;
1608#endif 1998#endif
1609 1999
1610 if (backend)
1611 postfork = 1; /* must be in line with ev_loop_fork */ 2000 postfork = 1; /* must be in line with ev_loop_fork */
1612} 2001}
1613 2002
1614/*****************************************************************************/ 2003/*****************************************************************************/
1615 2004
1616void 2005void
1617ev_invoke (EV_P_ void *w, int revents) 2006ev_invoke (EV_P_ void *w, int revents)
1618{ 2007{
1619 EV_CB_INVOKE ((W)w, revents); 2008 EV_CB_INVOKE ((W)w, revents);
1620} 2009}
1621 2010
1622void inline_speed 2011unsigned int
1623call_pending (EV_P) 2012ev_pending_count (EV_P)
2013{
2014 int pri;
2015 unsigned int count = 0;
2016
2017 for (pri = NUMPRI; pri--; )
2018 count += pendingcnt [pri];
2019
2020 return count;
2021}
2022
2023void noinline
2024ev_invoke_pending (EV_P)
1624{ 2025{
1625 int pri; 2026 int pri;
1626 2027
1627 for (pri = NUMPRI; pri--; ) 2028 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2029 while (pendingcnt [pri])
1629 { 2030 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2031 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2032
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2033 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2034 /* ^ this is no longer true, as pending_w could be here */
1635 2035
1636 p->w->pending = 0; 2036 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2037 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2038 EV_FREQUENT_CHECK;
1639 }
1640 } 2039 }
1641} 2040}
1642 2041
1643#if EV_IDLE_ENABLE 2042#if EV_IDLE_ENABLE
1644void inline_size 2043/* make idle watchers pending. this handles the "call-idle */
2044/* only when higher priorities are idle" logic */
2045inline_size void
1645idle_reify (EV_P) 2046idle_reify (EV_P)
1646{ 2047{
1647 if (expect_false (idleall)) 2048 if (expect_false (idleall))
1648 { 2049 {
1649 int pri; 2050 int pri;
… …
1661 } 2062 }
1662 } 2063 }
1663} 2064}
1664#endif 2065#endif
1665 2066
1666void inline_size 2067/* make timers pending */
2068inline_size void
1667timers_reify (EV_P) 2069timers_reify (EV_P)
1668{ 2070{
1669 EV_FREQUENT_CHECK; 2071 EV_FREQUENT_CHECK;
1670 2072
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2073 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2074 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2075 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 { 2076 {
2077 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2078
2079 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2080
2081 /* first reschedule or stop timer */
2082 if (w->repeat)
2083 {
1680 ev_at (w) += w->repeat; 2084 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2085 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2086 ev_at (w) = mn_now;
1683 2087
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2088 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 2089
1686 ANHE_at_cache (timers [HEAP0]); 2090 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 2091 downheap (timers, timercnt, HEAP0);
2092 }
2093 else
2094 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2095
2096 EV_FREQUENT_CHECK;
2097 feed_reverse (EV_A_ (W)w);
1688 } 2098 }
1689 else 2099 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2100
1692 EV_FREQUENT_CHECK;
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2101 feed_reverse_done (EV_A_ EV_TIMEOUT);
1694 } 2102 }
1695} 2103}
1696 2104
1697#if EV_PERIODIC_ENABLE 2105#if EV_PERIODIC_ENABLE
1698void inline_size 2106/* make periodics pending */
2107inline_size void
1699periodics_reify (EV_P) 2108periodics_reify (EV_P)
1700{ 2109{
1701 EV_FREQUENT_CHECK; 2110 EV_FREQUENT_CHECK;
1702 2111
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2112 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2113 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2114 int feed_count = 0;
1706 2115
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2116 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2117 {
2118 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2119
2120 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2121
2122 /* first reschedule or stop timer */
2123 if (w->reschedule_cb)
2124 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2125 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2126
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2127 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2128
1716 ANHE_at_cache (periodics [HEAP0]); 2129 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2130 downheap (periodics, periodiccnt, HEAP0);
2131 }
2132 else if (w->interval)
2133 {
2134 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2135 /* if next trigger time is not sufficiently in the future, put it there */
2136 /* this might happen because of floating point inexactness */
2137 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2138 {
2139 ev_at (w) += w->interval;
2140
2141 /* if interval is unreasonably low we might still have a time in the past */
2142 /* so correct this. this will make the periodic very inexact, but the user */
2143 /* has effectively asked to get triggered more often than possible */
2144 if (ev_at (w) < ev_rt_now)
2145 ev_at (w) = ev_rt_now;
2146 }
2147
2148 ANHE_at_cache (periodics [HEAP0]);
2149 downheap (periodics, periodiccnt, HEAP0);
2150 }
2151 else
2152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2153
2154 EV_FREQUENT_CHECK;
2155 feed_reverse (EV_A_ (W)w);
1718 } 2156 }
1719 else if (w->interval) 2157 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 2158
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); 2159 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2160 }
1744} 2161}
1745 2162
2163/* simply recalculate all periodics */
2164/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1746static void noinline 2165static void noinline
1747periodics_reschedule (EV_P) 2166periodics_reschedule (EV_P)
1748{ 2167{
1749 int i; 2168 int i;
1750 2169
… …
1763 2182
1764 reheap (periodics, periodiccnt); 2183 reheap (periodics, periodiccnt);
1765} 2184}
1766#endif 2185#endif
1767 2186
1768void inline_speed 2187/* adjust all timers by a given offset */
2188static void noinline
2189timers_reschedule (EV_P_ ev_tstamp adjust)
2190{
2191 int i;
2192
2193 for (i = 0; i < timercnt; ++i)
2194 {
2195 ANHE *he = timers + i + HEAP0;
2196 ANHE_w (*he)->at += adjust;
2197 ANHE_at_cache (*he);
2198 }
2199}
2200
2201/* fetch new monotonic and realtime times from the kernel */
2202/* also detect if there was a timejump, and act accordingly */
2203inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 2204time_update (EV_P_ ev_tstamp max_block)
1770{ 2205{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2206#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2207 if (expect_true (have_monotonic))
1775 { 2208 {
2209 int i;
1776 ev_tstamp odiff = rtmn_diff; 2210 ev_tstamp odiff = rtmn_diff;
1777 2211
1778 mn_now = get_clock (); 2212 mn_now = get_clock ();
1779 2213
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2214 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1806 ev_rt_now = ev_time (); 2240 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2241 mn_now = get_clock ();
1808 now_floor = mn_now; 2242 now_floor = mn_now;
1809 } 2243 }
1810 2244
2245 /* no timer adjustment, as the monotonic clock doesn't jump */
2246 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2247# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2248 periodics_reschedule (EV_A);
1813# endif 2249# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2250 }
1817 else 2251 else
1818#endif 2252#endif
1819 { 2253 {
1820 ev_rt_now = ev_time (); 2254 ev_rt_now = ev_time ();
1821 2255
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2256 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 2257 {
2258 /* adjust timers. this is easy, as the offset is the same for all of them */
2259 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 2260#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2261 periodics_reschedule (EV_A);
1826#endif 2262#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 } 2263 }
1835 2264
1836 mn_now = ev_rt_now; 2265 mn_now = ev_rt_now;
1837 } 2266 }
1838} 2267}
1839 2268
1840void 2269void
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) 2270ev_loop (EV_P_ int flags)
1856{ 2271{
2272#if EV_FEATURE_API
2273 ++loop_depth;
2274#endif
2275
2276 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2277
1857 loop_done = EVUNLOOP_CANCEL; 2278 loop_done = EVUNLOOP_CANCEL;
1858 2279
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2280 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 2281
1861 do 2282 do
1862 { 2283 {
1863#if EV_VERIFY >= 2 2284#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2285 ev_loop_verify (EV_A);
… …
1877 /* we might have forked, so queue fork handlers */ 2298 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2299 if (expect_false (postfork))
1879 if (forkcnt) 2300 if (forkcnt)
1880 { 2301 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2302 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2303 EV_INVOKE_PENDING;
1883 } 2304 }
1884#endif 2305#endif
1885 2306
2307#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2308 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2309 if (expect_false (preparecnt))
1888 { 2310 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2311 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2312 EV_INVOKE_PENDING;
1891 } 2313 }
2314#endif
1892 2315
1893 if (expect_false (!activecnt)) 2316 if (expect_false (loop_done))
1894 break; 2317 break;
1895 2318
1896 /* we might have forked, so reify kernel state if necessary */ 2319 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2320 if (expect_false (postfork))
1898 loop_fork (EV_A); 2321 loop_fork (EV_A);
… …
1905 ev_tstamp waittime = 0.; 2328 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 2329 ev_tstamp sleeptime = 0.;
1907 2330
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1909 { 2332 {
2333 /* remember old timestamp for io_blocktime calculation */
2334 ev_tstamp prev_mn_now = mn_now;
2335
1910 /* update time to cancel out callback processing overhead */ 2336 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100); 2337 time_update (EV_A_ 1e100);
1912 2338
1913 waittime = MAX_BLOCKTIME; 2339 waittime = MAX_BLOCKTIME;
1914 2340
… …
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1925 if (waittime > to) waittime = to; 2351 if (waittime > to) waittime = to;
1926 } 2352 }
1927#endif 2353#endif
1928 2354
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 2356 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 2357 waittime = timeout_blocktime;
1931 2358
1932 sleeptime = waittime - backend_fudge; 2359 /* extra check because io_blocktime is commonly 0 */
1933
1934 if (expect_true (sleeptime > io_blocktime)) 2360 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 2361 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363
2364 if (sleeptime > waittime - backend_fudge)
2365 sleeptime = waittime - backend_fudge;
2366
2367 if (expect_true (sleeptime > 0.))
2368 {
1939 ev_sleep (sleeptime); 2369 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 2370 waittime -= sleeptime;
2371 }
1941 } 2372 }
1942 } 2373 }
1943 2374
2375#if EV_FEATURE_API
1944 ++loop_count; 2376 ++loop_count;
2377#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 2379 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1946 2381
1947 /* update ev_rt_now, do magic */ 2382 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 2383 time_update (EV_A_ waittime + sleeptime);
1949 } 2384 }
1950 2385
… …
1957#if EV_IDLE_ENABLE 2392#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 2393 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 2394 idle_reify (EV_A);
1960#endif 2395#endif
1961 2396
2397#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 2398 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 2399 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2400 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2401#endif
1965 2402
1966 call_pending (EV_A); 2403 EV_INVOKE_PENDING;
1967 } 2404 }
1968 while (expect_true ( 2405 while (expect_true (
1969 activecnt 2406 activecnt
1970 && !loop_done 2407 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2408 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1972 )); 2409 ));
1973 2410
1974 if (loop_done == EVUNLOOP_ONE) 2411 if (loop_done == EVUNLOOP_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 2412 loop_done = EVUNLOOP_CANCEL;
2413
2414#if EV_FEATURE_API
2415 --loop_depth;
2416#endif
1976} 2417}
1977 2418
1978void 2419void
1979ev_unloop (EV_P_ int how) 2420ev_unloop (EV_P_ int how)
1980{ 2421{
1981 loop_done = how; 2422 loop_done = how;
1982} 2423}
1983 2424
2425void
2426ev_ref (EV_P)
2427{
2428 ++activecnt;
2429}
2430
2431void
2432ev_unref (EV_P)
2433{
2434 --activecnt;
2435}
2436
2437void
2438ev_now_update (EV_P)
2439{
2440 time_update (EV_A_ 1e100);
2441}
2442
2443void
2444ev_suspend (EV_P)
2445{
2446 ev_now_update (EV_A);
2447}
2448
2449void
2450ev_resume (EV_P)
2451{
2452 ev_tstamp mn_prev = mn_now;
2453
2454 ev_now_update (EV_A);
2455 timers_reschedule (EV_A_ mn_now - mn_prev);
2456#if EV_PERIODIC_ENABLE
2457 /* TODO: really do this? */
2458 periodics_reschedule (EV_A);
2459#endif
2460}
2461
1984/*****************************************************************************/ 2462/*****************************************************************************/
2463/* singly-linked list management, used when the expected list length is short */
1985 2464
1986void inline_size 2465inline_size void
1987wlist_add (WL *head, WL elem) 2466wlist_add (WL *head, WL elem)
1988{ 2467{
1989 elem->next = *head; 2468 elem->next = *head;
1990 *head = elem; 2469 *head = elem;
1991} 2470}
1992 2471
1993void inline_size 2472inline_size void
1994wlist_del (WL *head, WL elem) 2473wlist_del (WL *head, WL elem)
1995{ 2474{
1996 while (*head) 2475 while (*head)
1997 { 2476 {
1998 if (*head == elem) 2477 if (expect_true (*head == elem))
1999 { 2478 {
2000 *head = elem->next; 2479 *head = elem->next;
2001 return; 2480 break;
2002 } 2481 }
2003 2482
2004 head = &(*head)->next; 2483 head = &(*head)->next;
2005 } 2484 }
2006} 2485}
2007 2486
2008void inline_speed 2487/* internal, faster, version of ev_clear_pending */
2488inline_speed void
2009clear_pending (EV_P_ W w) 2489clear_pending (EV_P_ W w)
2010{ 2490{
2011 if (w->pending) 2491 if (w->pending)
2012 { 2492 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2493 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 2494 w->pending = 0;
2015 } 2495 }
2016} 2496}
2017 2497
2018int 2498int
… …
2022 int pending = w_->pending; 2502 int pending = w_->pending;
2023 2503
2024 if (expect_true (pending)) 2504 if (expect_true (pending))
2025 { 2505 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2506 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2507 p->w = (W)&pending_w;
2027 w_->pending = 0; 2508 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 2509 return p->events;
2030 } 2510 }
2031 else 2511 else
2032 return 0; 2512 return 0;
2033} 2513}
2034 2514
2035void inline_size 2515inline_size void
2036pri_adjust (EV_P_ W w) 2516pri_adjust (EV_P_ W w)
2037{ 2517{
2038 int pri = w->priority; 2518 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2519 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2520 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 2521 ev_set_priority (w, pri);
2042} 2522}
2043 2523
2044void inline_speed 2524inline_speed void
2045ev_start (EV_P_ W w, int active) 2525ev_start (EV_P_ W w, int active)
2046{ 2526{
2047 pri_adjust (EV_A_ w); 2527 pri_adjust (EV_A_ w);
2048 w->active = active; 2528 w->active = active;
2049 ev_ref (EV_A); 2529 ev_ref (EV_A);
2050} 2530}
2051 2531
2052void inline_size 2532inline_size void
2053ev_stop (EV_P_ W w) 2533ev_stop (EV_P_ W w)
2054{ 2534{
2055 ev_unref (EV_A); 2535 ev_unref (EV_A);
2056 w->active = 0; 2536 w->active = 0;
2057} 2537}
… …
2064 int fd = w->fd; 2544 int fd = w->fd;
2065 2545
2066 if (expect_false (ev_is_active (w))) 2546 if (expect_false (ev_is_active (w)))
2067 return; 2547 return;
2068 2548
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 2549 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2550 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 2551
2071 EV_FREQUENT_CHECK; 2552 EV_FREQUENT_CHECK;
2072 2553
2073 ev_start (EV_A_ (W)w, 1); 2554 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2555 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 2556 wlist_add (&anfds[fd].head, (WL)w);
2076 2557
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2558 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 2559 w->events &= ~EV__IOFDSET;
2079 2560
2080 EV_FREQUENT_CHECK; 2561 EV_FREQUENT_CHECK;
2081} 2562}
2082 2563
2083void noinline 2564void noinline
… …
2085{ 2566{
2086 clear_pending (EV_A_ (W)w); 2567 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2568 if (expect_false (!ev_is_active (w)))
2088 return; 2569 return;
2089 2570
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2571 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 2572
2092 EV_FREQUENT_CHECK; 2573 EV_FREQUENT_CHECK;
2093 2574
2094 wlist_del (&anfds[w->fd].head, (WL)w); 2575 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 2576 ev_stop (EV_A_ (W)w);
… …
2105 if (expect_false (ev_is_active (w))) 2586 if (expect_false (ev_is_active (w)))
2106 return; 2587 return;
2107 2588
2108 ev_at (w) += mn_now; 2589 ev_at (w) += mn_now;
2109 2590
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2591 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 2592
2112 EV_FREQUENT_CHECK; 2593 EV_FREQUENT_CHECK;
2113 2594
2114 ++timercnt; 2595 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2596 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 2599 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 2600 upheap (timers, ev_active (w));
2120 2601
2121 EV_FREQUENT_CHECK; 2602 EV_FREQUENT_CHECK;
2122 2603
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2604 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 2605}
2125 2606
2126void noinline 2607void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 2608ev_timer_stop (EV_P_ ev_timer *w)
2128{ 2609{
… …
2133 EV_FREQUENT_CHECK; 2614 EV_FREQUENT_CHECK;
2134 2615
2135 { 2616 {
2136 int active = ev_active (w); 2617 int active = ev_active (w);
2137 2618
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2619 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 2620
2140 --timercnt; 2621 --timercnt;
2141 2622
2142 if (expect_true (active < timercnt + HEAP0)) 2623 if (expect_true (active < timercnt + HEAP0))
2143 { 2624 {
2144 timers [active] = timers [timercnt + HEAP0]; 2625 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 2626 adjustheap (timers, timercnt, active);
2146 } 2627 }
2147 } 2628 }
2148 2629
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 2630 ev_at (w) -= mn_now;
2152 2631
2153 ev_stop (EV_A_ (W)w); 2632 ev_stop (EV_A_ (W)w);
2633
2634 EV_FREQUENT_CHECK;
2154} 2635}
2155 2636
2156void noinline 2637void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 2638ev_timer_again (EV_P_ ev_timer *w)
2158{ 2639{
… …
2176 } 2657 }
2177 2658
2178 EV_FREQUENT_CHECK; 2659 EV_FREQUENT_CHECK;
2179} 2660}
2180 2661
2662ev_tstamp
2663ev_timer_remaining (EV_P_ ev_timer *w)
2664{
2665 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2666}
2667
2181#if EV_PERIODIC_ENABLE 2668#if EV_PERIODIC_ENABLE
2182void noinline 2669void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 2670ev_periodic_start (EV_P_ ev_periodic *w)
2184{ 2671{
2185 if (expect_false (ev_is_active (w))) 2672 if (expect_false (ev_is_active (w)))
… …
2187 2674
2188 if (w->reschedule_cb) 2675 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2676 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2677 else if (w->interval)
2191 { 2678 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193 /* this formula differs from the one in periodic_reify because we do not always round up */ 2680 /* this formula differs from the one in periodic_reify because we do not always round up */
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 2682 }
2196 else 2683 else
2197 ev_at (w) = w->offset; 2684 ev_at (w) = w->offset;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 2692 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 2693 upheap (periodics, ev_active (w));
2207 2694
2208 EV_FREQUENT_CHECK; 2695 EV_FREQUENT_CHECK;
2209 2696
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2697 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 2698}
2212 2699
2213void noinline 2700void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 2701ev_periodic_stop (EV_P_ ev_periodic *w)
2215{ 2702{
… …
2220 EV_FREQUENT_CHECK; 2707 EV_FREQUENT_CHECK;
2221 2708
2222 { 2709 {
2223 int active = ev_active (w); 2710 int active = ev_active (w);
2224 2711
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2712 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 2713
2227 --periodiccnt; 2714 --periodiccnt;
2228 2715
2229 if (expect_true (active < periodiccnt + HEAP0)) 2716 if (expect_true (active < periodiccnt + HEAP0))
2230 { 2717 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 2718 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 2719 adjustheap (periodics, periodiccnt, active);
2233 } 2720 }
2234 } 2721 }
2235 2722
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 2723 ev_stop (EV_A_ (W)w);
2724
2725 EV_FREQUENT_CHECK;
2239} 2726}
2240 2727
2241void noinline 2728void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 2729ev_periodic_again (EV_P_ ev_periodic *w)
2243{ 2730{
… …
2249 2736
2250#ifndef SA_RESTART 2737#ifndef SA_RESTART
2251# define SA_RESTART 0 2738# define SA_RESTART 0
2252#endif 2739#endif
2253 2740
2741#if EV_SIGNAL_ENABLE
2742
2254void noinline 2743void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 2744ev_signal_start (EV_P_ ev_signal *w)
2256{ 2745{
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))) 2746 if (expect_false (ev_is_active (w)))
2261 return; 2747 return;
2262 2748
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2749 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2264 2750
2265 evpipe_init (EV_A); 2751#if EV_MULTIPLICITY
2752 assert (("libev: a signal must not be attached to two different loops",
2753 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2266 2754
2267 EV_FREQUENT_CHECK; 2755 signals [w->signum - 1].loop = EV_A;
2756#endif
2268 2757
2758 EV_FREQUENT_CHECK;
2759
2760#if EV_USE_SIGNALFD
2761 if (sigfd == -2)
2269 { 2762 {
2270#ifndef _WIN32 2763 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 2764 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 2765 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 2766
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2767 if (sigfd >= 0)
2768 {
2769 fd_intern (sigfd); /* doing it twice will not hurt */
2277 2770
2278#ifndef _WIN32 2771 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 2772
2280#endif 2773 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2774 ev_set_priority (&sigfd_w, EV_MAXPRI);
2775 ev_io_start (EV_A_ &sigfd_w);
2776 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2777 }
2281 } 2778 }
2779
2780 if (sigfd >= 0)
2781 {
2782 /* TODO: check .head */
2783 sigaddset (&sigfd_set, w->signum);
2784 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2785
2786 signalfd (sigfd, &sigfd_set, 0);
2787 }
2788#endif
2282 2789
2283 ev_start (EV_A_ (W)w, 1); 2790 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 2791 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 2792
2286 if (!((WL)w)->next) 2793 if (!((WL)w)->next)
2794# if EV_USE_SIGNALFD
2795 if (sigfd < 0) /*TODO*/
2796# endif
2287 { 2797 {
2288#if _WIN32 2798# ifdef _WIN32
2799 evpipe_init (EV_A);
2800
2289 signal (w->signum, ev_sighandler); 2801 signal (w->signum, ev_sighandler);
2290#else 2802# else
2291 struct sigaction sa; 2803 struct sigaction sa;
2804
2805 evpipe_init (EV_A);
2806
2292 sa.sa_handler = ev_sighandler; 2807 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 2808 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 2810 sigaction (w->signum, &sa, 0);
2811
2812 sigemptyset (&sa.sa_mask);
2813 sigaddset (&sa.sa_mask, w->signum);
2814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2296#endif 2815#endif
2297 } 2816 }
2298 2817
2299 EV_FREQUENT_CHECK; 2818 EV_FREQUENT_CHECK;
2300} 2819}
2301 2820
2302void noinline 2821void noinline
… …
2310 2829
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 2830 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2313 2832
2314 if (!signals [w->signum - 1].head) 2833 if (!signals [w->signum - 1].head)
2834 {
2835#if EV_MULTIPLICITY
2836 signals [w->signum - 1].loop = 0; /* unattach from signal */
2837#endif
2838#if EV_USE_SIGNALFD
2839 if (sigfd >= 0)
2840 {
2841 sigset_t ss;
2842
2843 sigemptyset (&ss);
2844 sigaddset (&ss, w->signum);
2845 sigdelset (&sigfd_set, w->signum);
2846
2847 signalfd (sigfd, &sigfd_set, 0);
2848 sigprocmask (SIG_UNBLOCK, &ss, 0);
2849 }
2850 else
2851#endif
2315 signal (w->signum, SIG_DFL); 2852 signal (w->signum, SIG_DFL);
2853 }
2316 2854
2317 EV_FREQUENT_CHECK; 2855 EV_FREQUENT_CHECK;
2318} 2856}
2857
2858#endif
2859
2860#if EV_CHILD_ENABLE
2319 2861
2320void 2862void
2321ev_child_start (EV_P_ ev_child *w) 2863ev_child_start (EV_P_ ev_child *w)
2322{ 2864{
2323#if EV_MULTIPLICITY 2865#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2866 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 2867#endif
2326 if (expect_false (ev_is_active (w))) 2868 if (expect_false (ev_is_active (w)))
2327 return; 2869 return;
2328 2870
2329 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
2330 2872
2331 ev_start (EV_A_ (W)w, 1); 2873 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2874 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 2875
2334 EV_FREQUENT_CHECK; 2876 EV_FREQUENT_CHECK;
2335} 2877}
2336 2878
2337void 2879void
… …
2341 if (expect_false (!ev_is_active (w))) 2883 if (expect_false (!ev_is_active (w)))
2342 return; 2884 return;
2343 2885
2344 EV_FREQUENT_CHECK; 2886 EV_FREQUENT_CHECK;
2345 2887
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2888 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 2889 ev_stop (EV_A_ (W)w);
2348 2890
2349 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2350} 2892}
2893
2894#endif
2351 2895
2352#if EV_STAT_ENABLE 2896#if EV_STAT_ENABLE
2353 2897
2354# ifdef _WIN32 2898# ifdef _WIN32
2355# undef lstat 2899# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 2900# define lstat(a,b) _stati64 (a,b)
2357# endif 2901# endif
2358 2902
2359#define DEF_STAT_INTERVAL 5.0074891 2903#define DEF_STAT_INTERVAL 5.0074891
2904#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 2905#define MIN_STAT_INTERVAL 0.1074891
2361 2906
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2907static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 2908
2364#if EV_USE_INOTIFY 2909#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192 2910
2911/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2912# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2366 2913
2367static void noinline 2914static void noinline
2368infy_add (EV_P_ ev_stat *w) 2915infy_add (EV_P_ ev_stat *w)
2369{ 2916{
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); 2917 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2371 2918
2372 if (w->wd < 0) 2919 if (w->wd >= 0)
2920 {
2921 struct statfs sfs;
2922
2923 /* now local changes will be tracked by inotify, but remote changes won't */
2924 /* unless the filesystem is known to be local, we therefore still poll */
2925 /* also do poll on <2.6.25, but with normal frequency */
2926
2927 if (!fs_2625)
2928 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2929 else if (!statfs (w->path, &sfs)
2930 && (sfs.f_type == 0x1373 /* devfs */
2931 || sfs.f_type == 0xEF53 /* ext2/3 */
2932 || sfs.f_type == 0x3153464a /* jfs */
2933 || sfs.f_type == 0x52654973 /* reiser3 */
2934 || sfs.f_type == 0x01021994 /* tempfs */
2935 || sfs.f_type == 0x58465342 /* xfs */))
2936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2937 else
2938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 2939 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2940 else
2941 {
2942 /* can't use inotify, continue to stat */
2943 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 2944
2376 /* monitor some parent directory for speedup hints */ 2945 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2946 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 2947 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2948 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 2949 {
2381 char path [4096]; 2950 char path [4096];
2382 strcpy (path, w->path); 2951 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2955 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2956 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 2957
2389 char *pend = strrchr (path, '/'); 2958 char *pend = strrchr (path, '/');
2390 2959
2391 if (!pend) 2960 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 2961 break;
2393 2962
2394 *pend = 0; 2963 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 2964 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 2965 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 2967 }
2399 } 2968 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 2969
2403 if (w->wd >= 0) 2970 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2971 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2972
2973 /* now re-arm timer, if required */
2974 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2975 ev_timer_again (EV_A_ &w->timer);
2976 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2405} 2977}
2406 2978
2407static void noinline 2979static void noinline
2408infy_del (EV_P_ ev_stat *w) 2980infy_del (EV_P_ ev_stat *w)
2409{ 2981{
… …
2412 2984
2413 if (wd < 0) 2985 if (wd < 0)
2414 return; 2986 return;
2415 2987
2416 w->wd = -2; 2988 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 2989 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 2990 wlist_del (&fs_hash [slot].head, (WL)w);
2419 2991
2420 /* remove this watcher, if others are watching it, they will rearm */ 2992 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 2993 inotify_rm_watch (fs_fd, wd);
2422} 2994}
2423 2995
2424static void noinline 2996static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2997infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 2998{
2427 if (slot < 0) 2999 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3000 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3001 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3002 infy_wd (EV_A_ slot, wd, ev);
2431 else 3003 else
2432 { 3004 {
2433 WL w_; 3005 WL w_;
2434 3006
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3007 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3008 {
2437 ev_stat *w = (ev_stat *)w_; 3009 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 3010 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 3011
2440 if (w->wd == wd || wd == -1) 3012 if (w->wd == wd || wd == -1)
2441 { 3013 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3014 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3015 {
3016 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3017 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3018 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3019 }
2447 3020
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3021 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3026
2454static void 3027static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3028infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3029{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3030 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3031 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3032 int len = read (fs_fd, buf, sizeof (buf));
2461 3033
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3034 for (ofs = 0; ofs < len; )
3035 {
3036 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3037 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038 ofs += sizeof (struct inotify_event) + ev->len;
3039 }
2464} 3040}
2465 3041
2466void inline_size 3042inline_size unsigned int
3043ev_linux_version (void)
3044{
3045 struct utsname buf;
3046 unsigned int v;
3047 int i;
3048 char *p = buf.release;
3049
3050 if (uname (&buf))
3051 return 0;
3052
3053 for (i = 3+1; --i; )
3054 {
3055 unsigned int c = 0;
3056
3057 for (;;)
3058 {
3059 if (*p >= '0' && *p <= '9')
3060 c = c * 10 + *p++ - '0';
3061 else
3062 {
3063 p += *p == '.';
3064 break;
3065 }
3066 }
3067
3068 v = (v << 8) | c;
3069 }
3070
3071 return v;
3072}
3073
3074inline_size void
3075ev_check_2625 (EV_P)
3076{
3077 /* kernels < 2.6.25 are borked
3078 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3079 */
3080 if (ev_linux_version () < 0x020619)
3081 return;
3082
3083 fs_2625 = 1;
3084}
3085
3086inline_size int
3087infy_newfd (void)
3088{
3089#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3090 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3091 if (fd >= 0)
3092 return fd;
3093#endif
3094 return inotify_init ();
3095}
3096
3097inline_size void
2467infy_init (EV_P) 3098infy_init (EV_P)
2468{ 3099{
2469 if (fs_fd != -2) 3100 if (fs_fd != -2)
2470 return; 3101 return;
2471 3102
3103 fs_fd = -1;
3104
3105 ev_check_2625 (EV_A);
3106
2472 fs_fd = inotify_init (); 3107 fs_fd = infy_newfd ();
2473 3108
2474 if (fs_fd >= 0) 3109 if (fs_fd >= 0)
2475 { 3110 {
3111 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3112 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3113 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3114 ev_io_start (EV_A_ &fs_w);
3115 ev_unref (EV_A);
2479 } 3116 }
2480} 3117}
2481 3118
2482void inline_size 3119inline_size void
2483infy_fork (EV_P) 3120infy_fork (EV_P)
2484{ 3121{
2485 int slot; 3122 int slot;
2486 3123
2487 if (fs_fd < 0) 3124 if (fs_fd < 0)
2488 return; 3125 return;
2489 3126
3127 ev_ref (EV_A);
3128 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3129 close (fs_fd);
2491 fs_fd = inotify_init (); 3130 fs_fd = infy_newfd ();
2492 3131
3132 if (fs_fd >= 0)
3133 {
3134 fd_intern (fs_fd);
3135 ev_io_set (&fs_w, fs_fd, EV_READ);
3136 ev_io_start (EV_A_ &fs_w);
3137 ev_unref (EV_A);
3138 }
3139
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3140 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3141 {
2495 WL w_ = fs_hash [slot].head; 3142 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3143 fs_hash [slot].head = 0;
2497 3144
2498 while (w_) 3145 while (w_)
… …
2503 w->wd = -1; 3150 w->wd = -1;
2504 3151
2505 if (fs_fd >= 0) 3152 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3153 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 3154 else
3155 {
3156 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3157 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 3158 ev_timer_again (EV_A_ &w->timer);
3159 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3160 }
2509 } 3161 }
2510
2511 } 3162 }
2512} 3163}
2513 3164
3165#endif
3166
3167#ifdef _WIN32
3168# define EV_LSTAT(p,b) _stati64 (p, b)
3169#else
3170# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3171#endif
2515 3172
2516void 3173void
2517ev_stat_stat (EV_P_ ev_stat *w) 3174ev_stat_stat (EV_P_ ev_stat *w)
2518{ 3175{
… …
2525static void noinline 3182static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3183stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3184{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3185 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3186
2530 /* we copy this here each the time so that */ 3187 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); 3188 ev_stat_stat (EV_A_ w);
2534 3189
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3190 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 3191 if (
2537 w->prev.st_dev != w->attr.st_dev 3192 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3193 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3194 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3195 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3196 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3197 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3198 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3199 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3200 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3201 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3202 || prev.st_ctime != w->attr.st_ctime
2548 ) { 3203 ) {
3204 /* we only update w->prev on actual differences */
3205 /* in case we test more often than invoke the callback, */
3206 /* to ensure that prev is always different to attr */
3207 w->prev = prev;
3208
2549 #if EV_USE_INOTIFY 3209 #if EV_USE_INOTIFY
3210 if (fs_fd >= 0)
3211 {
2550 infy_del (EV_A_ w); 3212 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3213 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3214 ev_stat_stat (EV_A_ w); /* avoid race... */
3215 }
2553 #endif 3216 #endif
2554 3217
2555 ev_feed_event (EV_A_ w, EV_STAT); 3218 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3219 }
2557} 3220}
… …
2560ev_stat_start (EV_P_ ev_stat *w) 3223ev_stat_start (EV_P_ ev_stat *w)
2561{ 3224{
2562 if (expect_false (ev_is_active (w))) 3225 if (expect_false (ev_is_active (w)))
2563 return; 3226 return;
2564 3227
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); 3228 ev_stat_stat (EV_A_ w);
2570 3229
3230 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3231 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3232
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3233 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575 ev_set_priority (&w->timer, ev_priority (w)); 3234 ev_set_priority (&w->timer, ev_priority (w));
2576 3235
2577#if EV_USE_INOTIFY 3236#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3237 infy_init (EV_A);
2579 3238
2580 if (fs_fd >= 0) 3239 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3240 infy_add (EV_A_ w);
2582 else 3241 else
2583#endif 3242#endif
3243 {
2584 ev_timer_start (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 ev_unref (EV_A);
3246 }
2585 3247
2586 ev_start (EV_A_ (W)w, 1); 3248 ev_start (EV_A_ (W)w, 1);
2587 3249
2588 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2589} 3251}
… …
2598 EV_FREQUENT_CHECK; 3260 EV_FREQUENT_CHECK;
2599 3261
2600#if EV_USE_INOTIFY 3262#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3263 infy_del (EV_A_ w);
2602#endif 3264#endif
3265
3266 if (ev_is_active (&w->timer))
3267 {
3268 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3269 ev_timer_stop (EV_A_ &w->timer);
3270 }
2604 3271
2605 ev_stop (EV_A_ (W)w); 3272 ev_stop (EV_A_ (W)w);
2606 3273
2607 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2608} 3275}
… …
2653 3320
2654 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
2655} 3322}
2656#endif 3323#endif
2657 3324
3325#if EV_PREPARE_ENABLE
2658void 3326void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3327ev_prepare_start (EV_P_ ev_prepare *w)
2660{ 3328{
2661 if (expect_false (ev_is_active (w))) 3329 if (expect_false (ev_is_active (w)))
2662 return; 3330 return;
… …
2688 3356
2689 ev_stop (EV_A_ (W)w); 3357 ev_stop (EV_A_ (W)w);
2690 3358
2691 EV_FREQUENT_CHECK; 3359 EV_FREQUENT_CHECK;
2692} 3360}
3361#endif
2693 3362
3363#if EV_CHECK_ENABLE
2694void 3364void
2695ev_check_start (EV_P_ ev_check *w) 3365ev_check_start (EV_P_ ev_check *w)
2696{ 3366{
2697 if (expect_false (ev_is_active (w))) 3367 if (expect_false (ev_is_active (w)))
2698 return; 3368 return;
… …
2724 3394
2725 ev_stop (EV_A_ (W)w); 3395 ev_stop (EV_A_ (W)w);
2726 3396
2727 EV_FREQUENT_CHECK; 3397 EV_FREQUENT_CHECK;
2728} 3398}
3399#endif
2729 3400
2730#if EV_EMBED_ENABLE 3401#if EV_EMBED_ENABLE
2731void noinline 3402void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 3403ev_embed_sweep (EV_P_ ev_embed *w)
2733{ 3404{
… …
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3420embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 3421{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3422 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 3423
2753 { 3424 {
2754 struct ev_loop *loop = w->other; 3425 EV_P = w->other;
2755 3426
2756 while (fdchangecnt) 3427 while (fdchangecnt)
2757 { 3428 {
2758 fd_reify (EV_A); 3429 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3430 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2760 } 3431 }
2761 } 3432 }
2762} 3433}
2763 3434
3435static void
3436embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3437{
3438 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3439
3440 ev_embed_stop (EV_A_ w);
3441
3442 {
3443 EV_P = w->other;
3444
3445 ev_loop_fork (EV_A);
3446 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3447 }
3448
3449 ev_embed_start (EV_A_ w);
3450}
3451
2764#if 0 3452#if 0
2765static void 3453static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3454embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2767{ 3455{
2768 ev_idle_stop (EV_A_ idle); 3456 ev_idle_stop (EV_A_ idle);
… …
2774{ 3462{
2775 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2776 return; 3464 return;
2777 3465
2778 { 3466 {
2779 struct ev_loop *loop = w->other; 3467 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3468 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3469 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 3470 }
2783 3471
2784 EV_FREQUENT_CHECK; 3472 EV_FREQUENT_CHECK;
2785 3473
… …
2788 3476
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 3477 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 3478 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 3479 ev_prepare_start (EV_A_ &w->prepare);
2792 3480
3481 ev_fork_init (&w->fork, embed_fork_cb);
3482 ev_fork_start (EV_A_ &w->fork);
3483
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3484 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 3485
2795 ev_start (EV_A_ (W)w, 1); 3486 ev_start (EV_A_ (W)w, 1);
2796 3487
2797 EV_FREQUENT_CHECK; 3488 EV_FREQUENT_CHECK;
… …
2804 if (expect_false (!ev_is_active (w))) 3495 if (expect_false (!ev_is_active (w)))
2805 return; 3496 return;
2806 3497
2807 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2808 3499
2809 ev_io_stop (EV_A_ &w->io); 3500 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 3501 ev_prepare_stop (EV_A_ &w->prepare);
3502 ev_fork_stop (EV_A_ &w->fork);
2811 3503
2812 ev_stop (EV_A_ (W)w); 3504 ev_stop (EV_A_ (W)w);
2813 3505
2814 EV_FREQUENT_CHECK; 3506 EV_FREQUENT_CHECK;
2815} 3507}
… …
2894 3586
2895void 3587void
2896ev_async_send (EV_P_ ev_async *w) 3588ev_async_send (EV_P_ ev_async *w)
2897{ 3589{
2898 w->sent = 1; 3590 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 3591 evpipe_write (EV_A_ &async_pending);
2900} 3592}
2901#endif 3593#endif
2902 3594
2903/*****************************************************************************/ 3595/*****************************************************************************/
2904 3596
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 3606once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 3607{
2916 void (*cb)(int revents, void *arg) = once->cb; 3608 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 3609 void *arg = once->arg;
2918 3610
2919 ev_io_stop (EV_A_ &once->io); 3611 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 3612 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 3613 ev_free (once);
2922 3614
2923 cb (revents, arg); 3615 cb (revents, arg);
2924} 3616}
2925 3617
2926static void 3618static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 3619once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 3620{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3621 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3622
3623 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 3624}
2931 3625
2932static void 3626static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 3627once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 3628{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3629 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3630
3631 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 3632}
2937 3633
2938void 3634void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3635ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940{ 3636{
… …
2962 ev_timer_set (&once->to, timeout, 0.); 3658 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 3659 ev_timer_start (EV_A_ &once->to);
2964 } 3660 }
2965} 3661}
2966 3662
3663/*****************************************************************************/
3664
3665#if EV_WALK_ENABLE
3666void
3667ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3668{
3669 int i, j;
3670 ev_watcher_list *wl, *wn;
3671
3672 if (types & (EV_IO | EV_EMBED))
3673 for (i = 0; i < anfdmax; ++i)
3674 for (wl = anfds [i].head; wl; )
3675 {
3676 wn = wl->next;
3677
3678#if EV_EMBED_ENABLE
3679 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3680 {
3681 if (types & EV_EMBED)
3682 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3683 }
3684 else
3685#endif
3686#if EV_USE_INOTIFY
3687 if (ev_cb ((ev_io *)wl) == infy_cb)
3688 ;
3689 else
3690#endif
3691 if ((ev_io *)wl != &pipe_w)
3692 if (types & EV_IO)
3693 cb (EV_A_ EV_IO, wl);
3694
3695 wl = wn;
3696 }
3697
3698 if (types & (EV_TIMER | EV_STAT))
3699 for (i = timercnt + HEAP0; i-- > HEAP0; )
3700#if EV_STAT_ENABLE
3701 /*TODO: timer is not always active*/
3702 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3703 {
3704 if (types & EV_STAT)
3705 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3706 }
3707 else
3708#endif
3709 if (types & EV_TIMER)
3710 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3711
3712#if EV_PERIODIC_ENABLE
3713 if (types & EV_PERIODIC)
3714 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3715 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3716#endif
3717
3718#if EV_IDLE_ENABLE
3719 if (types & EV_IDLE)
3720 for (j = NUMPRI; i--; )
3721 for (i = idlecnt [j]; i--; )
3722 cb (EV_A_ EV_IDLE, idles [j][i]);
3723#endif
3724
3725#if EV_FORK_ENABLE
3726 if (types & EV_FORK)
3727 for (i = forkcnt; i--; )
3728 if (ev_cb (forks [i]) != embed_fork_cb)
3729 cb (EV_A_ EV_FORK, forks [i]);
3730#endif
3731
3732#if EV_ASYNC_ENABLE
3733 if (types & EV_ASYNC)
3734 for (i = asynccnt; i--; )
3735 cb (EV_A_ EV_ASYNC, asyncs [i]);
3736#endif
3737
3738#if EV_PREPARE_ENABLE
3739 if (types & EV_PREPARE)
3740 for (i = preparecnt; i--; )
3741# if EV_EMBED_ENABLE
3742 if (ev_cb (prepares [i]) != embed_prepare_cb)
3743# endif
3744 cb (EV_A_ EV_PREPARE, prepares [i]);
3745#endif
3746
3747#if EV_CHECK_ENABLE
3748 if (types & EV_CHECK)
3749 for (i = checkcnt; i--; )
3750 cb (EV_A_ EV_CHECK, checks [i]);
3751#endif
3752
3753#if EV_SIGNAL_ENABLE
3754 if (types & EV_SIGNAL)
3755 for (i = 0; i < EV_NSIG - 1; ++i)
3756 for (wl = signals [i].head; wl; )
3757 {
3758 wn = wl->next;
3759 cb (EV_A_ EV_SIGNAL, wl);
3760 wl = wn;
3761 }
3762#endif
3763
3764#if EV_CHILD_ENABLE
3765 if (types & EV_CHILD)
3766 for (i = (EV_PID_HASHSIZE); i--; )
3767 for (wl = childs [i]; wl; )
3768 {
3769 wn = wl->next;
3770 cb (EV_A_ EV_CHILD, wl);
3771 wl = wn;
3772 }
3773#endif
3774/* EV_STAT 0x00001000 /* stat data changed */
3775/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3776}
3777#endif
3778
2967#if EV_MULTIPLICITY 3779#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 3780 #include "ev_wrap.h"
2969#endif 3781#endif
2970 3782
2971#ifdef __cplusplus 3783#ifdef __cplusplus

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